Wirth; Joseph G.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Wirth; Joseph G..The latest application filed is for "4,4'-isopropylidene-bis(3- and 4-phenyleneoxyphthalic anhydride)".
- Wirth; Joseph G. - Schenectady NY
- Wirth; Joseph G. - Ballston Lake NY
| Patent | Date |
|---|---|
| 4,4'-Isopropylidene-bis(3- and 4-phenyleneoxyphthalic anhydride) Grant 3,972,902 - Heath , et al. August 3, 1 | 1976-08-03 |
| Aromatic bis(ether phthalis anhydride) compounds Grant 3,956,320 - Heath , et al. May 11, 1 | 1976-05-11 |
| Polyetherimides Grant 3,875,116 - Heath , et al. April 1, 1 | 1975-04-01 |
| Certain Fluoroescent 2-(2-hydroxy-phthalimidomethyl-phenyl)-benzothiazoles Grant 3,723,449 - Wirth March 27, 1 | 1973-03-27 |
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