Issued Patents All Time
Showing 76–100 of 118 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4291177 | Process for obtaining halogenated diphenols | Charles A. Wilson | 1981-09-22 |
| 4291151 | Process for preparing polycarbonate using cyclic di- or triamine catalyst | — | 1981-09-22 |
| 4291150 | Process for preparing polycarbonate using non-cyclic polyamine catalysts | — | 1981-09-22 |
| 4290934 | Plasticized polycarbonate composition | Phillip S. Wilson | 1981-09-22 |
| 4286086 | Process for preparing polycarbonate using sterically hindered secondary amine catalysts | — | 1981-08-25 |
| 4286085 | Process for preparing polycarbonates using substituted pyridine catalysts | Donald B. G. Jaquiss, Lawrence C. Mitchell | 1981-08-25 |
| 4286084 | Process for preparing polycarbonate using certain nitrogen-containing heterocyclic compounds as catalysts | — | 1981-08-25 |
| 4283566 | Process for obtaining halogenated diphenols | — | 1981-08-11 |
| 4282134 | Plasticized polycarbonate composition | Phillip S. Wilson | 1981-08-04 |
| 4277598 | Process for preparing polycarbonates using cyclic amidine catalysts | Walter L. Hall, Donald B. G. Jaquiss | 1981-07-07 |
| 4277597 | Process for preparing polycarbonates using sterically hindered heterocycloaliphatic secondary amine catalysts | — | 1981-07-07 |
| 4277599 | Process for preparing polycarbonates using pyrrole catalysts | — | 1981-07-07 |
| 4277600 | Tetraphenolic compounds and polycarbonates containing the same | Charles V. Hedges | 1981-07-07 |
| 4275245 | Process for obtaining halogenated diphenols | — | 1981-06-23 |
| 4273942 | Plasticized polycarbonate composition | Phillip S. Wilson | 1981-06-16 |
| 4273692 | Polycarbonate composition containing halogen-free organotin plasticizer | Phillip S. Wilson | 1981-06-16 |
| 4268658 | Process for preparing polycarbonates using iminoethers as catalysts | — | 1981-05-19 |
| 4267305 | Process for preparing polycarbonates using nitrogen crown-cyclic compounds as catalysts | — | 1981-05-12 |
| 4263201 | Flame retardant polycarbonate composition | Jimmy Lynn Webb, Joseph B. Williams | 1981-04-21 |
| 4262113 | Process for preparing polycarbonates using amino guanidine or amino amidine catalysts | Donald B. G. Jaquiss | 1981-04-14 |
| 4262112 | Process for preparing polycarbonates using cyclic isourea catalysts | — | 1981-04-14 |
| 4262111 | Process for preparing polycarbonates using amidine catalysts | Walter L. Hall, Donald B. G. Jaquiss | 1981-04-14 |
| 4262110 | Process for preparing polycarbonate using cyclic iminoethers as catalysts | — | 1981-04-14 |
| 4258174 | Process for preparing polycarbonates using isourea catalysts | — | 1981-03-24 |
| 4252916 | Thermally stable translucent polycarbonate compositions | — | 1981-02-24 |