Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8973953 | Seal between pipe sections | Ian Harold Hignett | 2015-03-10 |
| 8840151 | Seal between pipe sections | Ian Harold Hignett | 2014-09-23 |
| 4732416 | Pipe connectors | Geoffrey C. Dearden, Donald N. Jones | 1988-03-22 |
| 4673201 | Pipe connector | Geoffrey C. Dearden, Edward J. Speare, Donald N. Jones | 1987-06-16 |
| 4629222 | Pipe connector | Geoffrey C. Dearden, Edward J. Speare, Donald N. Jones | 1986-12-16 |
| 4629223 | Pipe connector | Geoffrey C. Dearden, Edward J. Speare, Donald N. Jones | 1986-12-16 |
| 4582348 | Pipe connector with varied thread pitch | Geoffrey C. Dearden, Edward J. Speare, Donald N. Jones | 1986-04-15 |