Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7013916 | Sub-atmospheric gas delivery method and apparatus | Ronald Martin Pearlstein, John Giles Langan, John Irven, Benjamin Lee Hertzler | 2006-03-21 |
| 6648021 | Gas control device and method of supplying gas | John Irven, Mark George | 2003-11-18 |
| 6572688 | Gas purification unit | John Irven, Graham Leggett, Jonathan Davey | 2003-06-03 |
| 6527009 | Gas control device and method of supplying gas | John Irven, Mark George | 2003-03-04 |
| 6314986 | Gas control device and method of supplying gas | John Irven, Mark George | 2001-11-13 |
| 6085548 | Control vent system for ultra-high purity delivery system for liquefied compressed gases | Naser Mahmud Chowdhury, John Irven, Sukla Chandra, Kenneth Coull, Reiner Taege | 2000-07-11 |
| 5409526 | Apparatus for supplying high purity fluid | John Irven, Alan J. F. Paterson, Daniel C. Tregear | 1995-04-25 |