Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4503266 | Condensation process | — | 1985-03-05 |
| 4467122 | Condensation process | — | 1984-08-21 |
| 4247681 | Aromatic polyesters of 9,9-bis-(4-hydroxyphenyl)-fluorene, phthalic acids and phosphorus halides | Hermann Mark | 1981-01-27 |