Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5512686 | Method for the purification of dioxydiphthalic anhydride and ester intermediate made therein | Frank J. Dinan, Jeffrey S. Stults | 1996-04-30 |
| 5233049 | Highly fluorinated bis-imides | Frank J. Dinan, Roger A. Wolfe | 1993-08-03 |
| 5185451 | Bis-imides of dioxydiphthalic acid | Jeffrey S. Stults, Frank J. Dinan | 1993-02-09 |
| 5171828 | Copolyimide ODPA/BPDA/4,4'-ODA or P-PDA | Timothy A. Meterko, Rudolph F. Mundhenke | 1992-12-15 |
| 5166404 | Dioxydiphthalic acid esters | Jeffrey S. Stults, Frank J. Dinan | 1992-11-24 |
| 5101006 | Polyimides and copolyimides based on halo-oxydiphthalic anhydrides | Jeffrey S. Stults | 1992-03-31 |
| 5089631 | Dioxydiphthalic anhydride | Jeffrey S. Stults | 1992-02-18 |
| 5077382 | Copolyimide ODPA/BPDA/4,4'-ODA or P-PDA | Timothy A. Meterko, Rudolph F. Mundhenke | 1991-12-31 |
| 5021168 | Process for the preparation and recovery of oxydiphthalic anhydrides | John R. Molinaro, Joseph A. Pawlak | 1991-06-04 |
| 5003086 | Process of preparing dioxydiphthalic anhydride | Jeffrey S. Stults | 1991-03-26 |
| 5003031 | Polyimides and co-polyimides based on dioxydiphthalic anhydride | Jeffrey S. Stults | 1991-03-26 |
| 4962206 | Process for the preparation of 4-bromophthalic anhydride | Mary Cocoman | 1990-10-09 |
| 4960905 | Phenoxy phthalic anhydrides | — | 1990-10-02 |
| 4943642 | Halo-oxydiphthalic anhydrides | Jeffrey S. Stults | 1990-07-24 |
| 4870194 | Process for the preparation and recovery of oxdiphthalic anhydrides | John R. Molinaro, Joseph A. Pawlak | 1989-09-26 |
| 4868316 | Process for the preparation of diether diphthalic anhydrides | — | 1989-09-19 |
| 4837404 | Process for the preparation of oxy-diphthalic anhydrides | — | 1989-06-06 |
| 4827000 | Process for the preparation of phenoxy phthalic anhydrides | — | 1989-05-02 |
| 4697023 | Process for the preparation of oxy-diphthalic anhydrides | Joseph A. Pawlak | 1987-09-29 |
| 4447572 | Fire retardant polyamide | Daniel J. Scharf, Charles S. Ilardo, Gideon Salee | 1984-05-08 |
| 4195014 | Unsatured polyester resins having improved fire retardance | Edwin Dorfman, Raymond R. Hindersinn | 1980-03-25 |