Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874802 | Polycarbonate compositions resistant to gamma radiation | Sivaram Krishnan, Gerard E. Reinert | 1989-10-17 |
| 4873271 | Gamma radiation rsistant polycarbonate compositions | Sivaram Krishnan | 1989-10-10 |
| 4847312 | Hydrolytically stable polycarbonate composition comprising dicyclopentadienyl epoxy ether | Sivaram Krishnan | 1989-07-11 |
| 4804692 | Gamma-radiation resistant polycarbonate compositions | Winfried Paul, Sivaram Krishnan | 1989-02-14 |