WS

Willis T. Schwartz

OC Occidental Chemical: 20 patents #7 of 341Top 3%
HP Hooker Chemicals & Plastics: 1 patents #31 of 117Top 30%
📍 Grand Island, NY: #18 of 278 inventorsTop 7%
🗺 New York: #6,536 of 115,490 inventorsTop 6%
Overall (All Time): #212,197 of 4,157,543Top 6%
21
Patents All Time

Issued Patents All Time

Showing 1–21 of 21 patents

Patent #TitleCo-InventorsDate
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