Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7491260 | Valve operation diagnostic method for pressure swing adsorption systems | Blaine Edward Herb, Edward Landis Weist, Jr., Theodore Michael Sabram, Kuo-Kuang Hsu, Winfried Stephen Hoglen | 2009-02-17 |
| 5833092 | Apparatus for feeding poorly flowable dry particulate materials | Scott Godfrey, Leonard L. Hierath, Mark E. Hillam, Michael R. Schmehl | 1998-11-10 |
| 5656067 | VSA adsorption process with energy recovery | Rakesh Agrawal, Paul Anthony Webley, Joseph Gerard Wehrman | 1997-08-12 |
| 5540758 | VSA adsorption process with feed/vacuum advance and provide purge | Rakesh Agrawal, Ravi Kumar, Tarik Naheiri | 1996-07-30 |
| 5529610 | Multiple zeolite adsorbent layers in oxygen separation | Roger Dean Whitley, Michael Meyer | 1996-06-25 |
| 5429666 | VSA adsorption process with continuous operation | Rakesh Agrawal, Ravi Kumar, Tarik Naheiri | 1995-07-04 |
| 5411578 | Vacuum swing adsorption process with mixed repressurization and provide product depressurization | Roger Dean Whitley, Rakesh Agrawal, Ravi Kumar | 1995-05-02 |
| 5330561 | Extended vacuum swing adsorption process | Ravi Kumar, Tarik Naheiri | 1994-07-19 |
| 5328503 | Adsorption process with mixed repressurization and purge/equalization | Ravi Kumar, Tarik Naheiri | 1994-07-12 |
| 4320555 | Convertible vacuum cleaner | — | 1982-03-23 |