Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9044900 | Chemical fusion of non-metallic pipe joints | — | 2015-06-02 |
| 8746747 | Pipe joints | — | 2014-06-10 |
| 8747004 | Dual diameter cap with integral and adjustable swab | Jack D. Roach, Steven R. Cole | 2014-06-10 |
| 8276636 | Chemical fusion of non-metallic pipe joints | — | 2012-10-02 |
| 7341285 | Chemical fusion of non-metallic pipe joints | — | 2008-03-11 |
| 5366257 | Pipe connector | Paul Alan Spirkowyc, Daniel W. Womeldorff | 1994-11-22 |
| 5215337 | Containment piping system with expansion seal | Paul Alan Spirkowyc | 1993-06-01 |