Issued Patents 2022
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11512545 | Downhole check valve assembly with a ratchet mechanism | Min Mark Yuan, Lonnie Carl Helms, Frank Acosta, Kevin Wendell Ardoin | 2022-11-29 |
| 11473395 | Downhole check valve assembly with a locking mechanism | Kevin Wendell Ardoin, Lonnie Carl Helms, Min Mark Yuan, Frank Acosta | 2022-10-18 |
| 11346171 | Downhole apparatus | Min Mark Yuan, Lonnie Carl Helms, Frank Acosta, Rajesh Parameshwaraiah | 2022-05-31 |
| 11313189 | Downhole check valve assembly with a frustoconical mandrel | Benny E. Dawsey, Lonnie Carl Helms, Min Mark Yuan | 2022-04-26 |
| 11293261 | Buoyancy assist tool | Min Mark Yuan, Lonnie Carl Helms, Frank Acosta, Rajesh Parameshwaraiah, Kevin Wendell Ardoin | 2022-04-05 |
| 11293260 | Buoyancy assist tool | Avinash Gopal Dharne, Frank Acosta, Min Mark Yuan, Kevin Wendell Ardoin | 2022-04-05 |
| 11242720 | Threadless float equipment and method | Handoko Tirto Santoso, Min Mark Yuan, Frank Acosta, Rajesh Parameshwaraiah | 2022-02-08 |