Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12429052 | Volume ratio control system for a compressor | Angela Marie Comstock, Franklin Aaron Montejo, Colin Campbell | 2025-09-30 |
| 12000398 | Volume ratio control system for a compressor | Angela Marie Comstock, Franklin Aaron Montejo | 2024-06-04 |
| 12000399 | Volume ratio control system for a compressor | Angela Marie Comstock, Franklin Aaron Montejo, Colin Campbell | 2024-06-04 |
| 11629894 | Economizer control systems and methods | Angela Marie Comstock | 2023-04-18 |
| 10677246 | Variable volume ratio compressor | — | 2020-06-09 |
| 9976562 | Semi-hermetic compressor motor for ammonia service | Dennis Andrew Harrington, Paul A. Huber | 2018-05-22 |
| 9850902 | Compressor with a bypass port | Angela Marie Comstock, William L. Kopko | 2017-12-26 |
| 9759469 | System and method for controlling a variable speed drive of a compressor motor | — | 2017-09-12 |
| 9664418 | Variable volume screw compressors using proportional valve control | — | 2017-05-30 |
| 9631620 | Stationary volume ratio adjustment mechanism | Timothy I. Auman | 2017-04-25 |
| 9032750 | Manual Vi adjustment mechanism for screw compressors | Angela Marie Comstock, Shahebaz Malik | 2015-05-19 |
| 8899942 | Volume ratio control system and method | William L. Kopko, Angela Marie Comstock | 2014-12-02 |
| 8888466 | Compressor | — | 2014-11-18 |
| 8641395 | Compressor | — | 2014-02-04 |
| 8475151 | Compressor | Angela Marie Comstock | 2013-07-02 |
| 8444397 | Manual selective attenuator | Paul A. Huber | 2013-05-21 |
| 8287248 | Compressor | Joseph W. Pillis, Robert D. Heckman | 2012-10-16 |
| 8267116 | Strainer and anti-backflow device for compressors | Paul A. Huber | 2012-09-18 |
| 7854596 | System and method of operation of multiple screw compressors with continuously variable speed to provide noise cancellation | Harold Robert Schnetzka, E. Curtis Eichelberger | 2010-12-21 |
| 7413413 | System and method to reduce acoustic noise in screw compressors | Harold Robert Schnetzka, E. Curtis Eichelberger | 2008-08-19 |
| 7387498 | System and method for noise attenuation of screw compressors | Harold Robert Schnetzka, E. Curtis Eichelberger | 2008-06-17 |
| 6973797 | Capacity control for economizer refrigeration systems | — | 2005-12-13 |
| 6409490 | Rotary screw compressor with slide valve and slide stop guidance bushings | Charles M. Beall, Jr. | 2002-06-25 |
| 4678406 | Variable volume ratio screw compressor with step control | Joseph W. Pillis, David A. Murphy, Peter C. Spellar | 1987-07-07 |
| 4465446 | Radial and thrust bearing mountings providing independent loading | Joseph W. Pillis | 1984-08-14 |