Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11655908 | Low pressure shut off valve and system | Christopher Taylor Herman, Elijah Marshall Combs | 2023-05-23 |
| 11650605 | Combination valve for pressure building and final-line gas regulation | John R. Grenaway | 2023-05-16 |
| 11346454 | Low-profile paired relief valve | Christopher Taylor Herman | 2022-05-31 |
| 10337633 | Relief valve with directable outlet | John R. Grenaway, John B. Miller, William Clinton Osteen | 2019-07-02 |
| 8627846 | Pressure regulator having an integral pilot and self-relieving mechanism | John R. Grenaway | 2014-01-14 |
| 8517043 | Pressure build economizer valve | — | 2013-08-27 |
| 8066026 | Diaphragm controlled bypass valve | John R. Grenaway, William Clinton Osteen | 2011-11-29 |
| 8028712 | Diaphragm controlled bypass valve | John R. Grenaway, William Clinton Osteen | 2011-10-04 |