Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10753170 | Composite circular connector seal and method of use | Thomas H. Nguyen, Douglas A. Watkins, William David Wightman | 2020-08-25 |
| 10145493 | Slip-on connector to grip and seal on smooth OD pipe/casing and method of use | William David Wightman | 2018-12-04 |
| 6004074 | Marine riser having variable buoyancy | — | 1999-12-21 |
| 4487150 | Riser recoil preventer system | — | 1984-12-11 |
| 4351261 | Riser recoil preventer system | — | 1982-09-28 |
| 4210208 | Subsea choke and riser pressure equalization system | — | 1980-07-01 |