Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12246412 | Removal tool kit and removal tool therefor | Chungeng Chen, Frank Hennessey, Joseph Lee Irwin, Jr., Jim McNelis | 2025-03-11 |
| 12140237 | Compact inline over-pressurization protection device | Francis X. HENNESSEY, III | 2024-11-12 |
| 11994248 | Gas line seal clamp and method of sealing a gas line | Chungeng Chen, Jeff Mainzer | 2024-05-28 |
| 11774027 | Emergency leak clamp | Jeffrey William Mainzer | 2023-10-03 |
| 10767803 | Split cap safety plug | Jeff Mainzer | 2020-09-08 |