Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5327972 | Wellhead system | David H. Theiss | 1994-07-12 |
| 5193616 | Tubing hanger seal assembly | — | 1993-03-16 |
| 5188397 | Clamp and clamp supporting apparatus | — | 1993-02-23 |
| 5161828 | Break-away flowline fitting | James H. Owens, III | 1992-11-10 |
| 5159982 | Double walled riser | — | 1992-11-03 |
| 5080174 | Hydraulic packoff and casing hanger installation tool | — | 1992-01-14 |
| 5038865 | Method of and apparatus for protecting downhole equipment | William M. Taylor, David H. Theiss | 1991-08-13 |
| 5026074 | Annular metal-to-metal seal | Larry M. Hoes | 1991-06-25 |
| 4911244 | Marine casing suspension apparatus | — | 1990-03-27 |
| 4887672 | Subsea wellhead with annulus communicating system | — | 1989-12-19 |
| 4826216 | Well housing and landing shoulder | James H. Owens, III, William M. Taylor | 1989-05-02 |
| 4807705 | Casing hanger with landing shoulder seal insert | Herman O. Henderson, Jr. | 1989-02-28 |
| 4695190 | Pressure-balanced stab connection | Michael Best, Richard H. Jones, Richard J. Pond, Colin R. Gordon | 1987-09-22 |
| 4657263 | Annular packing unit and insert | James A. Burton | 1987-04-14 |
| 4554976 | Test tool for subsea blowout preventer stack | Charles D. Morrill, George D. Hall | 1985-11-26 |
| 4513823 | Cylindrical gate valve apparatus and method | Charles D. Morrill | 1985-04-30 |
| 4496173 | Threaded coupling | Joseph R. Roche, Charles D. Morrill | 1985-01-29 |
| 4479669 | Pipe connector with threaded latch screws | — | 1984-10-30 |
| 4478287 | Well control method and apparatus | Hubert L. Elkins | 1984-10-23 |
| 4476935 | Safety valve apparatus and method | Charles D. Morrill | 1984-10-16 |