Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883845 | Curable composition of polyether sulfone or polyether ketone copolymer and unsaturated imide | Werner Stauffer | 1989-11-28 |
| 4883855 | Ethylenically unsaturated polyether sulfone or polyether ketone copolymer | — | 1989-11-28 |