Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5174729 | Control system for controlling surge as a function of pressure oscillations and method | John M. Champagne, John F. Defenbaugh | 1992-12-29 |
| 5109676 | Vapor cycle system evaporator control | John F. Defenbaugh, Eric A. Henderson, Robert G. Glass | 1992-05-05 |
| 5088292 | Bearing pump control for lubricating hydrodynamic compressor bearings | John M. Champagne | 1992-02-18 |
| 5070706 | Superheat sensor with single coupling to fluid line | John M. Champagne | 1991-12-10 |
| 5050389 | Refrigeration system with oiless compressor supported by hydrodynamic bearings with multiple operation modes and method of operation | David B. Wigmore, John Craig Lentz, Edward S. Blain | 1991-09-24 |