Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10288052 | Helium management control system | Paul E. Dresens, Gary S. Ash, Allen J. Bartlett, Y. Roberto Than, Joseph Chopy, Jr. | 2019-05-14 |
| 9334859 | Helium management control system | Paul E. Dresens, Gary S. Ash, Allen J. Bartlett, Y. Roberto Than, Joseph Chopy, Jr. | 2016-05-10 |
| 8869552 | Helium management control system | Paul E. Dresens, Gary S. Ash, Allen J. Bartlett, Y. Roberto Than, Joseph Chopy, Jr. | 2014-10-28 |
| 8413452 | Linear drive cryogenic refrigerator | Ronald N. Morris, Allen J. Bartlett | 2013-04-09 |
| 8261562 | Helium management control system | Paul E. Dresens, Gary S. Ash, Allen J. Bartlett, Y. Roberto Than, Joseph Chopy, Jr. | 2012-09-11 |
| 7788942 | Helium management control system | Paul E. Dresens, Gary S. Ash, Allen J. Bartlett, Y. Roberto Than, Joseph Chopy, Jr. | 2010-09-07 |
| 7320224 | Method and apparatus for detecting and measuring state of fullness in cryopumps | Gary S. Ash, Allen J. Bartlett, James A. O'Neil | 2008-01-22 |
| 7127901 | Helium management control system | Paul E. Dresens, Gary S. Ash, Allen J. Bartlett, Y. Roberto Than, Joseph Chopy, Jr. | 2006-10-31 |
| 5537833 | Shielded cryogenic trap | Stephen R. Matte | 1996-07-23 |
| 5517823 | Pressure controlled cryopump regeneration method and system | Gerald J. Fortier, Allen J. Bartlett, Michael J. Eacobacci, Philip C. Lessard | 1996-05-21 |
| RE33878 | Cryogenic recondenser with remote cold box | Allen J. Bartlett, Philip A. Lessard | 1992-04-14 |
| 4910965 | Means for periodic desorption of a cryopump | Robert J. Lepofsky, Gerald R. Pruitt | 1990-03-27 |
| 4766741 | Cryogenic recondenser with remote cold box | Allen J. Bartlett, Philip A. Lessard | 1988-08-30 |
| 4718241 | Cryopump with quicker adsorption | Philip A. Lessard | 1988-01-12 |
| 4718240 | Cryopump regeneration method and apparatus | Robert C. Pandorf | 1988-01-12 |
| 4679402 | Cooling heat exchanger | — | 1987-07-14 |
| 4404808 | Cryogenic refrigerator with non-metallic regenerative heat exchanger | — | 1983-09-20 |