Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6371156 | No-bleed pilot for pressure regulating valve | Douglas C. Pfantz, Gary L. Scott, Wayne W. Sloppy | 2002-04-16 |
| 6102071 | Elastomeric element valve | Douglas C. Pfantz, Gary L. Scott, William J. Bonzer, James Lyman Griffin, Jr., Bernard Cornu +2 more | 2000-08-15 |
| 5964446 | Elastomeric element valve | Douglas C. Pfantz, Gary L. Scott, William J. Bonzer | 1999-10-12 |
| 5029813 | Diaphragm stem seal attachment | Randy Hall | 1991-07-09 |
| 4813648 | Sanitary valve | Philip L. Grabenbauer | 1989-03-21 |
| 4554943 | Single disc rotary valve | Robert L. Claney, Steven D. Kehoe, Kimball R. Barron | 1985-11-26 |
| 4532961 | Bidirectional disc throttling valve | Steven D. Kehoe | 1985-08-06 |