Stephen Johnston

Stephen P. Johnston

Professor

College: Francis College of Engineering
Department: Plastics Engineering
Phone: (978) 934-4000
Email: Stephen_Johnston@uml.edu

Expertise

Computer-aided engineering, computer-aided manufacturing, process control, injection molding, part design, mold design, finite element analysis

Research Interests

Dr. Johnston's research interests include process monitoring, process control, and process development for injection molding. He also works in the areas of part design and mold design utilizing computer-aided engineering and manufacturing.

Education

Ph D: Plastics Engineering, (2007), University of Massachusetts Lowell - Lowell, MA
Dissertation/Thesis Title: Instrumentation, Analysis, and On-line Simulation for Improved Process Control of Injection Molding
MS: Plastics Engineering, (2005), University of Massachusetts Lowell - Lowell, MA
Dissertation/Thesis Title: Development of a 1-D Flow Code for On-line Simulation
BS: Plastics Engineering Technology, (2003), Pennsylvania State University, The Behrend College

Biosketch

Stephen Johnston holds a B.S. in plastics engineering technology from Penn State, and M.S. and Ph.D. degrees in plastics engineering from UMass Lowell. He research focuses on polymer processing and product design, emphasizing injection molding, with expertise in instrumentation, analysis, simulation, design for manufacturability, and mold design. He has industrial experience with companies including Moldflow Corp., Bausch & Lomb, and Lord Corp. His research group at UMass Lowell is industrially funded with sponsored projects coming from over 25 companies resulting in over 40 articles and proceedings, a book chapter, and three patents. He has also taught numerous industrial seminars to attendees from over 125 different companies. Prof. Johnston’s course responsibilities have included: Introduction to Engineering, Introduction to Design, Mold Design Engineering, Product Design, and Advanced Mold Design. Finally, he serves as advisor for the Student Chapter of the Society of Plastics Engineers coordinating annual trips to the SPE ANTEC conference as well as other on-campus events.

Selected Awards and Honors

Open Door Award (2014) - UMass Lowell Chapter of Tau Beta Pi Honor Society
Teaching Excellence Award (2014), Teaching - UMass Lowell Plastics Engineering Dept.
Faculty Member of the Year Award (2013), Service, University - UMass Lowell Graduate Student Association
Outstanding Paper Award (2011), Scholarship/Research - Society of Plastics Engineers Injection Molding Division
Teaching Excellence Award (2011), Teaching - UMass Lowell Plastics Engineering Dept.
Graduate Research Scholar Award (2006), Scholarship/Research - UMass Lowell Graduate School
Outstanding Graduate Student Award (2006), Scholarship/Research - UMass Lowell Plastics Engineering Dept.
Dean's Gold Medal Award (2005) - UMass Lowell College of Engineering
Henry Thomas Design Excellence Award (2004) - UMass Lowell Plastics Engineering Dept.
Outstanding Teaching Assistant Award (2004), Teaching - UMass Lowell Plastics Engineering Dept.

Selected Publications

Moshe, A., Kazmer, D.O., Johnston, S.P., Malloy, R.A., Kenig, S. (2016). Analysis of variance in capillary rheometry. Polymer Engineering & Science, 56(8) 895–904.
Birkar, S., Mendible, G., Park, J., Mead, J.L., Johnston, S.P., Barry, C.M. (2016). Effect of feature spacing when injection molding parts with microstructured surfaces. Polymer Engineering & Science, 56(12) 1330–1338.
Mendible, G., Kazmer, D.O., Gao, R., Johnston, S.P. (2016). Estimation of Bulk Melt-Temperature from In-Mold Thermal Sensors for Injection Molding, Part B: Validation. International Polymer Processing, 31(3) 278–284.
Azhar, F., Tite, K., Johnston, S.P., Hansen, C.J., Shina, S.G., Schiano, A.M., Willis, D.J. (2016). Hands-on made 4 ME: Deploying, using, developing and evaluating desktop computer numerical controlled (CNC) systems in the engineering classroom (2016-June:). ASEE Annual Conference and Exposition, Conference Proceedings
Jahir Hussain, A. (University of Massachusetts Lowell), Alahyari, A.A. (United Technologies Research Center), Eastman, S.A. (United Technologies Research Center), Thibaud-Erkey, C. (United Technologies Research Center), Johnston, S.P., Sobkowicz Kline, M.J. (2016). Review of polymers for heat exchanger applications: Factors concerning thermal conductivity. Applied Thermal Engineering, 113 1118-1127.
Weitzen, J.A., Rashid, M.M., Johnston, S.P., Maase, E.L., Willis, D.J. (2015). A methodology for restructuring our first year introduction to engineering sequence at University of Massachusetts Lowell (122nd ASEE Annual Conference and Exposition: Making Value for Society:). American Society for Engineering Education
Kazmer, D.O., Gordon, G.W., Mendible, G.A., Johnston, S.P., Tang, X., Fan, Z., Gao, R.X. (2015). A multivariate sensor for intelligent polymer processing. IEEE/ASME Transactions on Mechatronics, 20(3) 1015-1023.
Vaillant, J.J., Hansen, C.J., Stolk, J., Johnston, S.P., Shina, S.G., Willis, D.J. (2015). Design and implementation of an inexpensive laboratory for providing hands-on design prototyping and manufacturing experiences to engineering students (122nd ASEE Annual Conference and Exposition: Making Value for Society:). American Society for Engineering Education
Johnston, S.P., Mendible, G.A., Gao, R.X., Kazmer, D.O. (2015). Estimation of bulk melt-temperature from in-mold thermal sensors for injection molding, part A. International Polymer Processing.
, Gordon, G., Mendible, G., Johnston, S.P., Tang, X., Fan, Z., Gao, R. (2014). A Multivariate Sensor for Intelligent Polymer Processing. IEEE/ASME Transactions in Mechatronics.
Mendible, G., Santiago, A., Barry, C., Johnston, S.P. (2014). Burn Mark Prediction in Injection Molding (60:). Society of Plastics Engineers Annual Technical Conference
Kazmer, D.O., Moshe, A., Johnston, S.P., Malloy, R.A., Kenig, S. (2014). Dynamics and hysteresis in capillary rheometry.
Kazmer, D.O., Moshe, A., Johnston, S.P., Malloy, R., Kenig, S. (2014). Dynamics and Hystersis in Capillary Rheometry (60:). Society of Plastics Engineers Annual Technical Conference
Birkar, S., Park, J., Mead, J., Johnston, S.P., Barry, C. (2014). Effect of Feature Spacing when Injection Molding Parts with Microstructured Surfaces. Polymer Engineering and Science.
Johnston, S.P., Mendible, G., Gao, R., Kazmer, D.O. (2014). Estimation of Bulk Melt Temperature from In-mold Thermal Sensors for Injection Molding. Part A: Method. International Polymer Processing.
Mendible, G., Kazmer, D.O., Gao, R., Johnston, S.P. (2014). Estimation of Bulk Melt Temperature from In-mold Thermal Sensors for Injection Molding. Part B: Validation. International Polymer Processing.
Rulander, J., Leahy, C., Thompson, R., Ellis, E., Ellis, J., Lai, F., Johnston, S.P. (2014). In vitro Release Characteristics of Timolol from an Acrylic Elastomeric Ophthalmic Device. Journal of Drug Delivery Science and Technology.
Johnston, S.P., McCready, C., Hazen, D., VanDerwalker, D., Kazmer, D.O. (2014). On-line multivariate optimization of injection moulding. Polymer Engineering and Science.
Wirwille, J., Johnston, S.P., Galati, V., Rousseau, W. (2014). The Effect of Temperature Uniformity and Surface Finish on Color Change Performance of Hot Runner Systems (60:). Society of Plastics Engineers Annual Technical Conference
Kazmer, D.O., Moshe, A., Johnston, S.P., Malloy, R., Kenig, S. (2014). Variance Analysis in Polymer Melt Viscosity Characterized by a Capillary Rheometer (30:). International Conference of the Polymer Processing Society
Mendible, G., Johnston, S.P. (2013). Validation of an Analytical Method to Estimate the Bulk Melt Temperature from In-Mold Temperature Data (59:). Society of Plastics Engineers Annual Technical Conference
Kazmer, D.O., Johnston, S.P., Gordon, G., Gao, R., Fan, Z., Asadiznajani, N. (2012). A Multivariate In-Mold Sensor Design for Measurement of Melt Pressure, Temperature, Velocity, and Viscosity (58:). Society of Plastics Engineers Annual Technical Conference
Kazmer, D.O., Johnston, S.P., Abou-Shady, L., Hazen, D., Ambrozic, C. (2012). Multivariate Modeling, Fault Detection, and Validation for the Extrusion Process (58:). Society of Plastics Engineers Annual Technical Conference
Moriarty, M., Kazmer, D.O., Johnston, S.P., Santeufemio, C. (2012). Passive Multi-Scale Alignment and Assembly (58:). Society of Plastics Engineers Annual Technical Conference
Kazmer, D.O., Johnston, S.P., Abou-Shady, L. (2011). Extrusion Instrumentation and Characterization (57:). Society of Plastics Engineers Annual Technical Conference
Kazmer, D.O., Johnston, S.P., Gao, R.X., Fan, Z. (2011). Feasibility analysis of an in-mold multi-variate sensor. International Polymer Processing, 26(1) 63-72.
Johnston, S.P., Kazmer, D.O., Abou-Shady, L. (2011). Multivariate Fault Detection for the Extrusion Process (57:). Society of Plastics Engineers Annual Technical Conference
McCready, C., Hazen, D., Johnston, S.P., VanDerwalker, D., Kazmer, D.O. (2011). On-Line Optimization for Injection Molding (57:). Society of Plastics Engineers Annual Technical Conference
Kazmer, D.O., Johnston, S.P., Moriarty, M., Santeufemio, C. (2011). Passive Multi-Scale Alignment (11: pp. 747). Proceedings of the ASME International Mechanical Engineering Congress and Exposition
Kazmer, D.O., Velusamy, S., Westerdale, S., Johnston, S.P., Gao, R.X. (2010). A Comparison of Seven Filling to Packing Switchover Methods for Injection Molding. Polymer Engineering and Science, 50(10) 2031-2043.
Kazmer, D.O., Johnston, S.P., Gao, R. (2010). Feasibility Analysis of an In-Mold Multivariate Sensor. Polymer Processing Society Annual Conference
Dempsey, D., Beaudoin, B., Yoon, S., Lee, J., Johnston, S.P., Mead, J., Barry, C. (2010). Gas Channel Design for Gas Assisted Micro Injection Molding (56:). Society of Plastics Engineers Annual Technical Conference
Kim, Y., Yoon, S., Lee, J., Johnston, S.P., Mead, J., Barry, C. (2010). Performance of Hybrid Tooling in Micro Injection Molding (56:). Society of Plastics Engineers Annual Technical Conference
Kazmer, D.O., Johnston, S.P. (2009). Chapter 20: Instrumentation and Control of Plastics Moulding Processes (pp. 655-680). CRC Press/Woodhead Publishing LTD
Kazmer, D.O., Johnston, S.P., VanDerwalker, D. (2009). Efficacy of Saturated Design of Experiments in Multivariate Process Characterization (55:). Society of Plastics Engineers Annual Technical Conference
Kazmer, D.O., Johnston, S.P., VanDerwalker, D. (2009). Multivariate Robustness Measurement (55:). Society of Plastics Engineers Annual Technical Conference
Johnston, S.P., Kazmer, D.O., Gao, R. (2009). On-line simulation based process control for injection molding. Polymer Engineering and Science, 49(12) 2482-2491.
Johnston, S.P., Kazmer, D.O. (2009). Teaching Mold Design: From Concept to Creation (55:). Society of Plastics Engineers Annual Technical Conference
Kazmer, D.O., Velusamy, S., Westerdale, S., Johnston, S.P., Gao, R. (2008). A Comparison of Seven Switchover Methods for Injection Molding (54:). Society of Plastics Engineers Annual Technical Conference
Johnston, S.P., Kazmer, D.O., Gao, R. (2008). In-Mold Temperature and Pressure Sensors for On-Line Detection of Jetting (54:). Society of Plastics Engineers Annual Technical Conference
Johnston, S.P., Kazmer, D.O. (2008). Lions and Tigers and Freshmen (54:). Society of Plastics Engineers Annual Technical Conference
Flaharty, R., Gidwant, M., Somani, P., Johnston, S.P., Kazmer, D.O. (2008). Melt Bulk Temperature Dynamics During Mold Filling (54:). Society of Plastics Engineers Annual Technical Conference
Johnston, S.P., Kazmer, D.O., Fan, Z., Gao, R. (2007). Causes of Melt Temperature Variations Observed in the Nozzle During Injection Molding (53:). Society of Plastics Engineers Annual Technical Conference
Johnston, S.P., Kazmer, D.O., Fan, Z., Gao, R. (2007). Estimation of Bulk Melt Temperature from In-Mold Sensors: Part 2 - Convection (53:). Society of Plastics Engineers Annual Technical Conference
Fan, Z., Hamid, M., Gao, R., Johnston, S.P., Kazmer, D.O. (2007). Structural Optimization of Dual-sensing Module for Temperature and Pressure Measurement in Injection Mold Cavity (9: pp. 941). Proceedings of the ASME International Mechanical Engineering Congress and Exposition
Johnston, S.P., Kazmer, D.O. (2006). Decoupled gating and simulation for injection molding. Polymer-Plastics Technology and Engineering, 45(4) 575.
Johnston, S.P., Kazmer, D.O. (2006). Estimation of Melt Temperature from In-Mold Temperature Sensor Data (52:). Society of Plastics Engineers Annual Technical Conference
Kazmer, D.O., Knepper, P., Johnston, S.P. (2005). A Review of In-Mold Pressure and Temperature Instrumentation (51:). Society of Plastics Engineers Annual Technical Conference
Kazmer, D.O., Gao, R., Cui, Y., Johnston, S.P., Knepper, P. (2005). Concept Design of a Wireless Pressure, Temperature, and Flow Rate Sensor for Injection Molding (51:). Society of Plastics Engineers Annual Technical Conference
Kazmer, D.O., Nageri, R., Fan, B., Kudchadkar, V., Johnston, S.P. (2005). Validation of On-Line Molding Process Simulation (51:). Society of Plastics Engineers Annual Technical Conference
Johnston, S.P., Squires, S. (2003). Effects of Processing Parameters and Wall Thickness on Core Geometry and Core Penetration for Co-injection Parts (49:). Society of Plastics Engineers Annual Technical Conference
Squires, S., Johnston, S.P. (2002). Using Blow Molding Simulation Software as a Troubleshooting Tool (48:). Society of Plastics Engineers Annual Technical Conference

Selected Presentations

Injection Molding, August 2015 - Lowell, MA
Product Design for Injection Molding, August 2015 - Lowell, MA
Injection Molding, June 2015 - Lowell, MA
Product Design for Injection Molding, June 2015 - Lowell, MA
Product Design for Injection Molding, October 2014 - Burlington, MA
Injection Molding, October 2014 - Pittsburgh, PA
Injection Molding, August 2014 - Lowell, MA
Product Design for Injection Molding, August 2014 - Lowell, MA
Injection Molding, June 2014 - Lowell, MA
Product Design for Injection Molding, June 2014 - Lowell, MA
Product Design for Injection Molding, June 2014 - Burlington, MA
Product Design for Injection Molding, May 2014 - Cincinnati, OH
TURI 3D Printing Overview, May 2014
Determining the Processability of Ceramic Injection Molding (CIM) Feedstocks - Society of Plastics Engineers Annual Technical Conference, April 2014 - Las Vegas, NV
Melt Processability of Poly(Methyl Glutarimide) - Society of Plastics Engineers Annual Technical Conference, April 2014 - Las Vegas, NV
Advanced Manufacturing with Polymers for Bio Applications - Nanoscale Science and Engineering Center for High Rate Nanomanufacturing: Destination Nano 2013, 2013 - Lowell, MA
Correlation of Experimental Data with Autodesk Simulation Moldflow Insight Transient Cooling Results, December 2013 - Las Vegas, NV
Multivariate Analysis for Wire and Cable Extrusion - International Wire and Cable Symposium (IWCS), November 2013 - Charlotte, NC
Product Design for Injection Molding, August 2013 - Kalamazoo, MI
Injection Molding, August 2013 - Lowell, MA
Product Design for Injection Molding, August 2013 - Lowell, MA
Injection Molding, June 2013 - Lowell, MA
Product Design for Injection Molding, June 2013 - Lowell, MA
Development of an Ergonomic Scalpel Handle for Accurate Incisions - Society of Plastics Engineers Annual Technical Conference, April 2013 - Cincinnati, OH
Effect of Temperature Uniformity on Color Change Performance in Hot Runner Systems - Society of Plastics Engineers Annual Technical Conference, April 2013 - Cincinnati, OH
Evaluation of Ceramic Blends for Use in Injection Molding - Society of Plastics Engineers Annual Technical Conference, April 2013 - Cincinnati, OH
Validation of an Analytical Method to Estimate the Bulk Melt Temperature from In-Mold Temperature Sensor Data - Society of Plastics Engineers Annual Technical Conference, April 2013 - Cincinnati, OH
Proper Set-up of a wire and cable coating process - SPE-ANTEC Conference, April 2013 - Cincinnati, OH
Prototyping for Medical Device Design - Prototyping Event, March 2013
Objet Dealer's Workshop, December 2012 - Lowell, MA
Using Autodesk Simulation Moldflow Insight to Explain Injection Molding and Detect Defects, November 2012 - Las Vegas, NV
Proper Set-up of a wire and cable coating process - International Wire and Cable Symposium (IWCS), November 2012 - Providence, RI
Product Design for Injection Molding, October 2012 - Seattle, WA
Effect of Processing Conditions on Weld Linke Strength of TPOs - SPE Automotive TPO Engineered Polyolefins Conference, October 2012 - Troy, MI
Injection Molding, August 2012 - Lowell, MA
Product Design for Injection Molding, August 2012 - Lowell, MA
Product Design for Injection Molding, June 2012 - Raynham, MA
Injection Molding, June 2012 - Lowell, MA
Product Design for Injection Molding, June 2012 - Lowell, MA
Plastic Part Design for Injection Molding, May 2012 - Chester, CT
Incorporating Simulation into the Classroom - Autodesk Workshop, April 2012 - Lowell, MA
Autodesk Moldflow: A Tool to Explain Injection Molding and Detect Defects, April 2012 - Orlando, FL
Effect of Processing Conditions on Weld Lines of Injection Molded Thermosplastic Olefins - Society of Plastics Engineers Annual Technical Conference, April 2012 - Orlando, FL
Topical Ophthalmic Drug Delivery Device (TODDD) - Society of Plastics Engineers Annual Technical Conference, April 2012 - Orlando, FL
Effects of Die Coatings on Melt Fracture in a Wire and Cable Coating Process - SPE-ANTEC Conference, April 2012 - Orlando, FL
Injection Molding for Solidworks Corp., February 2012 - Lowell, MA
Prototyping for Medical Device Design - Prototyping Event, January 2012
Autodesk Moldflow: A Teaching Tool to Explain Injection Molding and Detect Defects, December 2011 - Las Vegas, NV
Effects of Die Coatings on Melt Fracture in a Wire and Cable Coating Process - International Wire and Cable Symposium (IWCS), November 2011 - Charlotte, NC
Product Design for Injection Molding, August 2011 - Lowell, MA
Injection Molding, July 2011 - Lowell, MA
Product Design for Injection Molding, June 2011 - Lowell, MA
Product Design for Injection Molding, May 2011 - Parsippany, NJ
Development of a Wire and Cable Extrusion Line for Processing Polyolefins Containing Novel Flame Retardants - Society of Plastics Engineers Annual Technical Conference, May 2011 - Boston, MA
Feasibility Analysis of an In-Mold Multivariate Sensor - Society of Plastics Engineers Annual Technical Conference, May 2011 - Boston, MA
Pressure Reducing Medical Mattress - Society of Plastics Engineers Annual Technical Conference, May 2011 - Boston, MA
Topical Ophthalmic Drug Delivery Device (TODDD) - Society of Plastics Engineers Annual Technical Conference, May 2011 - Boston, MA
Development of a Wire and Cable Extrusion Line for Processing Polyolefins Containing Novel Flame Retardants - International Wire and Cable Symposium (IWCS), November 2010 - Providence, RI
Product Design for Injection Molding, August 2010 - Raynham, MA
Multivariate Quality Control - Executive Conference Management Molding Conference, April 2010 - San Antonio, TX
Injection Molding for Johnson & Johnson, January 2009 - Lowell, MA

Selected Contracts, Fellowships, Grants and Sponsored Research

GOALI: Scalable Processing of Thermoplastics with High Solid Filler Content for Thermally Conductive Applications (2018), Grant - NSF-CMMI
Sobkowicz Kline, M.J. (Principal), Johnston, S.P.
HEROES US Army Natick Soldier RD&E Center SLIMMER Project EX-3 Microclimate Cooling System Improvements Using Thermally Conductive Materials Systems (2018), Grant -
Sobkowicz Kline, M.J. (Co-Principal), Mack, H., Johnston, S.P., Sun, H.
Feasibility Study of New Processing Methods for Enhanced Products (2015), Grant - Rogers Corp.
Johnston, S.P., Barry, C.M.
Minex Color Concentrate Evaluation (2015), Grant - Unimin Corp.
Johnston, S.P.
Team UML-WIND 2016 (2015), Grant - U.S. Department Of Energy
Hansen, C.J. (Co-Principal), Willis, D.J. (Principal), Johnston, S.P. (Co-Principal), Niezrecki, C. (Co-Principal), Darish, M. (Co-Principal)
Polymer material processing and sub-scale component fabrication for polymer heat exchangers (2015), Grant - United Technologies Research Center
Sobkowicz Kline, M.J., Johnston, S.P.
Hands-on Machining, Analysis and Design Experiences for Mechanical Engineers (2013), Grant - NSF TUES program
Johnston, S.P., Willis, D.J., Hansen, C.J., Shina, S.G.
Characterization and Testing of SLS Materials (2013), Grant - New Balance Athletic Shoe, Inc.
Johnston, S.P.
Validation for Solidworks Plastics (2012), Grant - DS Solidworks Corp. & SIMULA
Johnston, S.P.
Evaluation of Color Change Performance in Hot Runners (2011), Grant - Synventive Molding Solutions
Johnston, S.P.
Feasibility Study of Dimensional Stability of Colorants (2013), Grant -
Johnston, S.P., Schmidt, D.
Processing Trials of Thermoplastic Polyurethanes (2014), Grant - United Technologies Research Center
Johnston, S.P., Sobkowicz Kline, M.J.
Injection Molded Ceramics (2013), Grant - Raytheon Company
Johnston, S.P., Mead, J.L.
Application of CAE in Medical Device Design and Production of Ocular Inserts in the Management of Glaucoma (2009), Grant - Vista Scientific LLC
Johnston, S.P., Lai, F.S.
Assessment of Melt Processability and Materials Performance of Poly(methyl glutarimide) (2012), Grant -
Johnston, S.P., Schmidt, D.
Viscosity of Various Material Formulations (2014), Grant - Free Think Technologies Inc.
Johnston, S.P. (Principal), Barry, C.M.
Co-Extrusion of TPU Ester Profiles (2014), Grant - Bemis Associates Inc.
Johnston, S.P.
Minex Color Concentrate Evaluation (2013), Grant - Unimin Corp.
Johnston, S.P.
Feasibility Study of Recycling Commercial Fishing Nets (2013), Grant - Bureo Inc.
Johnston, S.P.
Design of Micro-capability Heat Exchanger Module (2013), Grant - WaterFX Inc.
Johnston, S.P., Sobkowicz Kline, M.J.
Sheet Extrusion of Washed Pesticide Container Flake for ACRC Risk Assessment Mode (2012), Grant - AG Container Recycling Council
Johnston, S.P.
Ergonomic Scalpel Handle (2012), Grant - 5G Medical Inc.
Johnston, S.P.
Prototype Scaffolds to Test Cell Growth (2012), Grant - Iuventis Technologies
Johnston, S.P.
NCOC Ceramic Injection Molding Feedstock Investigation (2012), Grant - Raytheon Company
Johnston, S.P.
Motor Disk Adhesive Analysis (2011), Grant - Medtronic
Johnston, S.P., McCarthy, S.P.
Extruder Sensor Study (2011), Grant - Dynisco Instruments
Johnston, S.P.
Compounding of Fire Retardants (2010), Grant - Buckman
Johnston, S.P.
Smart Mattress (2010), Grant - TheraTorr
Johnston, S.P., McCarthy, S.P.
Research to Develop Injection Molded Medical Devices, Impact Strength of SLA Parts, Izod Testing of Prototyped Materials (2008), Grant - DePuy Orthopaedics Inc. and Medical Modeling Inc.
Johnston, S.P., McCarthy, S.P.
Multi-variate Analysis of Extrusion (2010), Grant - MKS Instruments Inc.
Johnston, S.P., Kazmer, D.O.
User Friendly Pessary (2009), Grant - Oz Technologies
Johnston, S.P., McCarthy, S.P.
PLS Modeling for Closed Loop Process Control of Injection Molding (2009), Grant - MKS Instruments Inc.
Johnston, S.P., Kazmer, D.O.