De Winter; Walter Frans
Patent Applications and Registrations
Patent applications and USPTO patent grants for De Winter; Walter Frans.The latest application filed is for "process of hardening protein-containing photographic layers with a mixture of a carboxyl group-activating, low molecular weight compound and a carboxyl group-activating polymer".
- De Winter; Walter Frans - 'S-Gravenwezel BE
- De Winter; Walter Frans - Gravenwezel BE
- De Winter; Walter Frans - Berchem BE
| Patent | Date |
|---|---|
| Process of hardening protein-containing photographic layers with a mixture of a carboxyl group-activating, low molecular weight compound and a carboxyl group-activating polymer Grant 4,047,957 - De Winter , et al. September 13, 1 | 1977-09-13 |
| Electrostatographic developers comprising a carrier bead coated with a copolymer of N-vinylcarbazole and trialkoxyvinylsilane and/or triacetoxyvinylsilane Grant 4,039,463 - De Roo , et al. August 2, 1 | 1977-08-02 |
| Production of adhesive transfers by diffusion transfer Grant 4,033,770 - De Haes , et al. July 5, 1 | 1977-07-05 |
| Dispersing polymeric particles in aqueous medium for coating silver halide emulsion layers Grant 4,022,622 - Timmerman , et al. May 10, 1 | 1977-05-10 |
| Recording material Grant 3,993,850 - Timmerman , et al. November 23, 1 | 1976-11-23 |
| Electrophotographic element with polymeric conductive layer Grant 3,950,169 - Timmerman , et al. April 13, 1 | 1976-04-13 |
| Recording material Grant 3,864,158 - Timmerman , et al. February 4, 1 | 1975-02-04 |
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