Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6652940 | Membranes of polyurethane based materials including polyester polyols | Henry W. Bonk | 2003-11-25 |
| 6599597 | Barrier membranes including a barrier layer employing aliphatic thermoplastic urethanes | Henry W. Bonk | 2003-07-29 |
| 6582786 | Flexible membranes | Henry W. Bonk, Paul H. Mitchell | 2003-06-24 |