Issued Patents All Time
Showing 51–75 of 118 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4448953 | Preparation of benzoate ester terminated polycarbonate with aroyl halide | Niles R. Rosenquist, Charles V. Hedges | 1984-05-15 |
| 4448975 | Process for the preparation of substituted amidines | — | 1984-05-15 |
| 4446285 | Rubbery polycarbonates | Charles V. Hedges | 1984-05-01 |
| 4446298 | Branched copolycarbonate from triphenol | Charles V. Hedges | 1984-05-01 |
| 4438241 | Heat resistant polyarylates | Charles V. Hedges | 1984-03-20 |
| 4430485 | Flame retardant polycarbonate compositions | — | 1984-02-07 |
| 4426513 | Polycarbonate resins based on polyphenolic compounds | — | 1984-01-17 |
| 4415722 | Branched aromatic polycarbonate from aliphatic polyol | Charles V. Hedges | 1983-11-15 |
| 4415725 | Aromatic branched polycarbonate from tetraphenol | Charles V. Hedges | 1983-11-15 |
| 4415724 | Branched aromatic polycarbonate from tetraphenol | Charles V. Hedges | 1983-11-15 |
| 4415696 | Aromatic polycarbonate compositions containing a C.sub.16 -C.sub.36 alkane compound as a mold release agent | — | 1983-11-15 |
| 4415723 | Randomly branched aromatic polycarbonate from triphenol | Charles V. Hedges | 1983-11-15 |
| 4403054 | Stabilized polycarbonate compositions | John A. Tyrell | 1983-09-06 |
| 4403087 | Polycarbonates chain terminated with sulfonic acid salt containing phenols | — | 1983-09-06 |
| 4391935 | Flame retardant polycarbonate composition | Charles A. Bialous, John B. Luce | 1983-07-05 |
| 4380612 | High heat distortion resistant segment ester polycarbonates | Frederick F. Holub, Charles V. Hedges | 1983-04-19 |
| 4379910 | Flame retardant aromatic polycarbonate compositions made from fluorinated diphenols | Charles V. Hedges | 1983-04-12 |
| 4365098 | Fluorinated diphenols and method for their preparation | Charles V. Hedges | 1982-12-21 |
| 4358613 | Process for the preparation of substituted guanidines | — | 1982-11-09 |
| 4358624 | Fluorinated monophenols and diphenols and method for their preparation | Charles V. Hedges | 1982-11-09 |
| 4353830 | Process for the preparation of substituted amidines | — | 1982-10-12 |
| 4349658 | Flame retardant aromatic polyester-carbonate copolymer compositions | Charles V. Hedges | 1982-09-14 |
| 4321202 | 1-Methyl-2(alkylimino)pyrrolidines and 1-methyl 2(cycloalkylimino) pyrrolidines | — | 1982-03-23 |
| 4320234 | Process for purifying crude diphenols | Charles V. Hedges | 1982-03-16 |
| 4304899 | Polycarbonate compositions having improved barrier properties | Charles V. Hedges | 1981-12-08 |