Issued Patents 2018
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10072474 | Pressure-retaining seals for multiple applications | Keith C. Johansen | 2018-09-11 |
| 10030461 | Constricting wedge design for pressure-retaining seal | Keith C. Johansen | 2018-07-24 |
| 9879496 | Remotely-actuated high pressure seals for wellhead pressure control fittings | Keith C. Johansen | 2018-01-30 |