Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12220657 | Filter disk segments | Lara C. Heberle, Samantha M. Brand | 2025-02-11 |
| 9579592 | Filter elements | — | 2017-02-28 |
| 8394256 | Method for haze mitigation and filterability improvement for base stocks | James W. Gleeson, Eric B. Sirota, Charles L. Baker, Jr., Dennis A. Gaal, David Mentzer +6 more | 2013-03-12 |
| 6382318 | Filter for subterranean use | — | 2002-05-07 |
| 6006829 | Filter for subterranean use | Stephen A. Geibel, John D. Miller, Steven L. Mills, Mark F. Hurwitz, Kenneth M. Williamson +1 more | 1999-12-28 |
| 5992518 | Filter for subterranean use | — | 1999-11-30 |
| 5909773 | Method of repairing a damaged well | Paul C. Koehler, Stephen A. Geibel, Reza Hashemi, Christophe Malbrel | 1999-06-08 |
| 5881812 | Filter for subterranean use | Christophe Malbrel, Stephen A. Geibel | 1999-03-16 |
| 5733452 | Filter and end cap assembly including a porous layer for sealing with a potting material and method for making the assembly | — | 1998-03-31 |
| 5664628 | Filter for subterranean wells | Paul C. Koehler, Stephen A. Geibel, Reza Hashemi, Christophe Malbrel | 1997-09-09 |
| 5545323 | Filter assembly and method of making a filter assembly | Paul C. Koehler, Lawrence J. Noble, George C. Jenkins | 1996-08-13 |
| 5545242 | In-line filter for tubing | William Lewis Murphy, II | 1996-08-13 |
| 5490868 | In-line filter for tubing | James A. Bair, Hidenori Nakayama | 1996-02-13 |
| 5395039 | Method of making a filter assembly | Paul C. Koehler, Vijay Y. Rajadhyaksha, Ezekiel E. Westfall | 1995-03-07 |
| 5149360 | Liquid laydown process and metal filter | Paul C. Koehler, Stephen A. Geibel | 1992-09-22 |