Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10689918 | Retrievable re-connecting device with internal seal and slips for connecting to the top of an existing tubing in a well bore | Len Barton, Mats Johansson | 2020-06-23 |
| 10513893 | Joint element, a casing string including such a joint element and a method for compensating of forces due to thermal effects in a casing string | Mats Johansson, Len Barton | 2019-12-24 |
| 10472921 | Temperature activated zonal isolation packer device | Len Barton, Mats Johansson | 2019-11-12 |
| 9982493 | Thermally expandable casing collar | Mats Johansson, Len Barton | 2018-05-29 |