Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE35944 | Method of everting a tube | Joseph A. Alexander, Lloyd G. Buchanan | 1998-11-03 |
| 5778938 | Method of installation of dual containment pipe rehabilitation system | Douglas K. Chick | 1998-07-14 |
| 5743299 | Dual containment pipe rehabilitation system and method of installation | Douglas K. Chick | 1998-04-28 |
| 5546992 | Dual containment pipe rehabilitation system | Douglas K. Chick | 1996-08-20 |
| 5305798 | Two-wall leakage detection system for a pipe | — | 1994-04-26 |
| 5172730 | Two-wall leakage detection system for a pipe | — | 1992-12-22 |
| 5167901 | Method of everting a tube | Joseph A. Alexander, Lloyd G. Buchanan | 1992-12-01 |
| 5154936 | Apparatus for everting a tube | Joseph A. Alexander, Lloyd G. Buchanan | 1992-10-13 |
| 5044405 | Method and apparatus for repair-lining of short sections of pipe | Jeff P. Wells | 1991-09-03 |
| 4980116 | Lining of pipelines and passageways | — | 1990-12-25 |
| 4752511 | Method and apparatus for sealing the space between pipes and linings therefor | — | 1988-06-21 |