Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5676309 | Thermally responsive flow control valve | Philip James Morgan | 1997-10-14 |
| 5511585 | Method and device for providing fluid resistance within a flow passageway | — | 1996-04-30 |
| 5505229 | Fluid resistor | — | 1996-04-09 |
| 5160226 | Tapered expansion sealing plug | — | 1992-11-03 |
| 5121947 | Expansion sealing device | Jeffrey C. Dickey, Loren Bonsack, Fredrick J. Pecor, John L. Grillo | 1992-06-16 |
| 5023990 | Device and method for removably retaining components in a smooth bore | Robert J. Kolp | 1991-06-18 |
| 5007454 | Fluid control valve with tubular poppet | — | 1991-04-16 |
| 4958661 | Check valve | Ludwig K. Holtermann | 1990-09-25 |
| 4804468 | Self-retaining smooth bore insert | Robert J. Kolp | 1989-02-14 |
| 4766924 | Pressure relief valve | Stephen E. Anderson | 1988-08-30 |
| 4753727 | Self-retaining smooth bore insert and method of installing same | Robert J. Kolp | 1988-06-28 |
| 4715231 | Maximum pressure indicator | Robert J. Kolp | 1987-12-29 |
| 4706705 | Check valve | — | 1987-11-17 |
| 4699715 | Folded filter screen | — | 1987-10-13 |
| 4492360 | Piezoelectric valve | Gerald W. O'Dell, Ludwig K. Holtermann | 1985-01-08 |
| 4491156 | Multiple way pinch valve | — | 1985-01-01 |