Van den Houte; Jozef Willy
Patent Applications and Registrations
Patent applications and USPTO patent grants for Van den Houte; Jozef Willy.The latest application filed is for "photographic recording and reproduction of information photochromic composition containing polyhalogenated hydrocarbon, spiropyran compound and heterocyclic mercapto compound and the use thereof".
- Van den Houte; Jozef Willy - B 1850 Grimbergen BE
- Van den Houte; Jozef Willy - Berchem BE
| Patent | Date |
|---|---|
| Photographic recording and reproduction of information photochromic composition containing polyhalogenated hydrocarbon, spiropyran compound and heterocyclic mercapto compound and the use thereof Grant 3,980,480 - Laridon , et al. September 14, 1 | 1976-09-14 |
| Thermoimaging process utilizing a photochromic material containing a spiropyran, a polyhalogenated hydrocarbon, a thiol compound and a polyvinylcarbazole Grant 3,887,808 - Van den Houte , et al. June 3, 1 | 1975-06-03 |
| Photographic Process For Forming A Positive Color Image Utilizing A Photochromic Composition Containing A Spiropyran Compound, A Photoactivator And Poly-n-vinyl- Carbazole Grant 3,847,611 - Van Royen , et al. November 12, 1 | 1974-11-12 |
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