Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5529090 | Enhanced solid piston flow controller | John M. Trantham | 1996-06-25 |
| 5383489 | Flow control valve with enhanced flow control piston | John M. Trantham | 1995-01-24 |
| 5265643 | Constant flow rate control valve with low pressure drop start | Trung Pham, David I. Sexton, Jr. | 1993-11-30 |
| 5174330 | Constant flow rate control valve with low pressure drop start | Trung Pham, David I. Sexton, Jr. | 1992-12-29 |