Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10787881 | Drill string apparatus with integrated annular barrier and port collar, methods, and systems | — | 2020-09-29 |
| 10352118 | Latchable casing while drilling systems and methods | Richard Thomas Hay, John G. Evans, Rohit Sankeshwari | 2019-07-16 |
| 10145204 | Drill string apparatus with integrated annular barrier and port collar, methods, and systems | — | 2018-12-04 |
| 9605483 | Directional drilling while conveying a lining member, with latching parking capabilities for multiple trips | Richard Thomas Hay, John G. Evans | 2017-03-28 |