Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 6338385 | Retrievable downhole adjustable choke | — | 2002-01-15 | $3,869,000 |
| 6302128 | Bi-directional rotary output actuator | — | 2001-10-16 | $3,744,000 |
| 6003548 | Pressure vessel clamp connector | — | 1999-12-21 | |
| 4611630 | Single hydraulic line choke valve system | Kenneth L. Pelata | 1986-09-16 | |
| 4558716 | Valve body for multiple valve insert packages | — | 1985-12-17 | |
| 4531545 | Drilling choke valve | — | 1985-07-30 | |
| 4471810 | Valve apparatus | Harry Richard Cove | 1984-09-18 | |
| 4461316 | Drilling choke | Harry Richard Cove | 1984-07-24 | |
| 4386756 | Self centering floating metal seal for a ball valve | — | 1983-06-07 | |
| 4360040 | Multiple orifice valves | Harry Richard Cove | 1982-11-23 | $5,182,000 |
| 4226263 | Erosion control trim in a control mechanism for a ball valve | — | 1980-10-07 | |
| 4199834 | Pig ball transfer unit | Graham J. Jones, Maurice Slegers | 1980-04-29 |