Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5389166 | Water barrier formed from a clay-fiber mat | — | 1995-02-14 |
| 5346565 | Water barrier of water-swellable clay sandwiched between interconnected layers of flexible fabric needled together using a lubricant | — | 1994-09-13 |
| 5346566 | Water barrier of water-swellable clay or other abrasive material sandwiched between interconnected layers of flexible fabric sewn or needled together using a lubricant and/or a liquid adhesive | — | 1994-09-13 |
| 5237945 | Water barrier formed from a clay-fiber mat | — | 1993-08-24 |
| 5174231 | Water-barrier of water-swellable clay sandwiched between interconnected layers of flexible fabric needled together using a lubricant | — | 1992-12-29 |