Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4661567 | Polycarbonate end capped with vinylene carbonate compound | John A. Tyrell | 1987-04-28 |
| 4595733 | Aromatic polycarbonate containing thieno-2-one-5,5-dioxide terminal groups | John A. Tyrell | 1986-06-17 |
| 4576982 | Hydrolytically stabilized polycarbonates | John A. Tyrell | 1986-03-18 |
| 4469852 | Composition comprising graft polycarbonates | John A. Tyrell, Omar M. Boutni | 1984-09-04 |
| 4463132 | Composition comprising a polyolefin and a block copolymer of a dihydric phenol monomer, a carbonate precursor and a polyphenylene oxide resin | John A. Tyrell, Ping Y. Liu | 1984-07-31 |
| 4393190 | Carbonate copolymers prepared from imide reactants | John A. Tyrell | 1983-07-12 |
| 4312803 | Thermally stable polycarbonate compositions | Ronald L. Markezich, Walter K. Olander, Robert J. Axelrod | 1982-01-26 |