Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9988950 | Valve stem seal with gas relief features | — | 2018-06-05 |
| 8893681 | Pressure support for engine valve stem seals | — | 2014-11-25 |
| 8840013 | Consumer self-profiling GUI, analysis and rapid information presentation tools | Brian Roundtree, Thomas S. Huseby, Kevin Allan, William Munslow, David Pratt | 2014-09-23 |
| 8668203 | Valve stem seal with gas relief features | — | 2014-03-11 |
| 8403333 | Zero torque membrane seal | Alexander Berdichevsky, Jianbin Jiang | 2013-03-26 |
| 8235394 | Valve stem seal with gas relief features | — | 2012-08-07 |
| 8011669 | Valve stem seal with gas relief features | Tigree Milam Butcher | 2011-09-06 |
| 7004477 | Reduced load gasket | Francis Joseph Walker | 2006-02-28 |
| 6994354 | Vibrationally decoupling gasket | — | 2006-02-07 |
| 6428013 | Reverse seal | David E. Johnston, Milton Loman Griswold | 2002-08-06 |
| 5584271 | Valve stem seal | — | 1996-12-17 |
| 5558056 | Two-piece valve stem seal | — | 1996-09-24 |