Pawlak; Joseph A.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Pawlak; Joseph A..The latest application filed is for "process for the preparation and recovery of oxydiphthalic anhydrides".
- Pawlak; Joseph A. - Cheektowaga NY
| Patent | Date |
|---|---|
| Process for the preparation and recovery of oxydiphthalic anhydrides Grant 5,021,168 - Molinaro , et al. June 4, 1 | 1991-06-04 |
| Process for the preparation and recovery of oxdiphthalic anhydrides Grant 4,870,194 - Molinaro , et al. September 26, 1 | 1989-09-26 |
| Process for the preparation of oxy-diphthalic anhydrides Grant 4,697,023 - Schwartz , et al. September 29, 1 | 1987-09-29 |
| Preparation of aromatic polyester with improved stability by addition of phosphite during preparation Grant 4,680,371 - Rosenfeld , et al. July 14, 1 | 1987-07-14 |
| Amine phosphite antioxidants Grant 4,006,117 - Merrifield , et al. February 1, 1 | 1977-02-01 |
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