Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6439415 | Closure for an equipment sub | Abu Salim, John A. Krogue | 2002-08-27 |
| 6173735 | Method and apparatus for regulating gas flow | Philip J. McKibbin, Mick Glasscock, John A. Krogue | 2001-01-16 |
| 6168647 | Multi-stage vessel and separator/coalescer filter element | Stephen A. von Phul, John A. Krogue, David J. Burns | 2001-01-02 |
| 5919284 | Gas filter separator coalescer and multi-stage vessel | Stephen A. von Phul, John A. Krogue, David J. Burns | 1999-07-06 |
| 5893956 | Method of making a filter element | Stephen A. von Phul, Nolan Glover, H. C. Bradford, Floyd Roberts | 1999-04-13 |
| 5827430 | Coreless and spirally wound non-woven filter element | Stephen A. von Phul, Nolan Glover, H. C. Bradford, Floyd Roberts | 1998-10-27 |
| 4247313 | Gas-particulate separator with pulse-jet cleanable filter elements | Robert A. Graff | 1981-01-27 |