Issued Patents All Time
Showing 25 most recent of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5950671 | Over-pressure protection of a fluid sensor | Anthony J. Manz | 1999-09-14 |
| 5603223 | Refrigerant handling with lubricant separation and draining | Walter D. Murray, Gary P. Murray | 1997-02-18 |
| 5551247 | Refrigerant handling system and method especially for flammable and potentially flammable refrigerants | Allan F. Heisler, II, Gary P. Murray, Walter D. Murray, Daniel L. Olds | 1996-09-03 |
| 5544492 | Refrigerant handling system and method with air purge and multiple refrigerant capabilities | — | 1996-08-13 |
| 5544494 | Method and apparatus for refrigerant purification | Daniel L. Olds | 1996-08-13 |
| 5535595 | Refrigerant handling with centrifugal separation of non condensibles from refrigerant | — | 1996-07-16 |
| 5517825 | Refrigerant handling system and method with air purge and system clearing capabilities | Sandra Sheehe | 1996-05-21 |
| 5497625 | Thermoelectric refrigerant handling system | Ilya Reyzin | 1996-03-12 |
| 5493869 | Recovery of at least two different and incompatible refrigerant types | Roger D. Shirley, Gary P. Murray | 1996-02-27 |
| 5469714 | Method and apparatus for analyzing refrigerant properties | Sandra Snyder | 1995-11-28 |
| 5417075 | Refrigerant filtation system with filter change indication | — | 1995-05-23 |
| 5392639 | Apparatus and method for identifying and distinguishing different refrigerants | — | 1995-02-28 |
| 5388416 | Refrigerant handling method with air purge and system clearing capabilities | Christopher M. Powers | 1995-02-14 |
| 5371019 | Method and apparatus for analyzing refrigerant properties | Sandra Snyder | 1994-12-06 |
| 5367886 | Refrigerant handling system with air purge and system clearing capabilities | Christopher M. Powers | 1994-11-29 |
| 5325675 | Refrigerant handling system and method with enhanced recovery vacuum capability | Christopher M. Powers | 1994-07-05 |
| 5285647 | Refrigerant handling system with air purge and multiple refrigerant capabilities | Sandra Snyder, Christopher M. Powers | 1994-02-15 |
| 5261249 | Refrigerant handling system with auxiliary condenser flow control | Christopher M. Powers | 1993-11-16 |
| 5231842 | Refrigerant handling system with liquid refrigerant and multiple refrigerant capabilities | Gregg E. Laukhuf | 1993-08-03 |
| 5211024 | Refrigerant filtration system with filter change indication | Christopher M. Powers | 1993-05-18 |
| 5209077 | Refrigerant recovery system | Christopher M. Powers, Charles E. Dull | 1993-05-11 |
| 5203177 | Refrigerant handling system with inlet refrigerant liquid/vapor flow control | Christopher M. Powers, Gregg E. Laukhuf | 1993-04-20 |
| 5182918 | Refrigerant recovery system | Christopher M. Powers | 1993-02-02 |
| 5181391 | Refrigerant handling system with air purge and multiple refrigerant capabilities | — | 1993-01-26 |
| 5172562 | Refrigerant recovery, purification and recharging system and method | Charles E. Dull | 1992-12-22 |