Issued Patents 2021
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11142994 | Buoyancy assist tool with annular cavity and piston | Min Mark Yuan, Lonnie Carl Helms, Ishwar Dilip Patil, Frank Acosta, Clayton Reed Bonn | 2021-10-12 |
| 11105166 | Buoyancy assist tool with floating piston | Min Mark Yuan, Lonnie Carl Helms, Ishwar Dilip Patil, Rajesh Parameshwaraiah | 2021-08-31 |
| 11072990 | Buoyancy assist tool with overlapping membranes | Min Mark Yuan, Ishwar Dilip Patil, Lonnie Carl Helms, Clayton Reed Bonn | 2021-07-27 |
| 10995583 | Buoyancy assist tool with debris barrier | Lonnie Carl Helms, Min Mark Yuan, Ishwar Dilip Patil, Rajesh Parameshwaraiah | 2021-05-04 |
| 10989013 | Buoyancy assist tool with center diaphragm debris barrier | Lonnie Carl Helms, Min Mark Yuan, Ishwar Dilip Patil, Byong Jun Kim, Rajesh Parameshwaraiah | 2021-04-27 |