Sobel; Johannes
Patent Applications and Registrations
Patent applications and USPTO patent grants for Sobel; Johannes.The latest application filed is for "photographic recording material containing a hydroquinone diether compound".
- Sobel; Johannes - Leverkusen DE
| Patent | Date |
|---|---|
| Photographic recording material containing a hydroquinone diether compound Grant 5,362,615 - Hagemann , et al. November 8, 1 | 1994-11-08 |
| Light sensitive, stabilized photographic recording material Grant 4,943,519 - Helling , et al. July 24, 1 | 1990-07-24 |
| Hardeners for proteins, a binder layer hardened therewith and a photographic recording material containing such a layer Grant 4,845,024 - Himmelmann , et al. July 4, 1 | 1989-07-04 |
| Hardened proteinic binder layer Grant 4,840,890 - Ohlschlager , et al. June 20, 1 | 1989-06-20 |
| Color photographic materials and color photographic images Grant 4,330,606 - Sobel , et al. May 18, 1 | 1982-05-18 |
| Gelatino Silver Halide Emulsion Containing A Trimesic Aldehyde Hardening Agent Grant 3,762,926 - Himmelmann , et al. October 2, 1 | 1973-10-02 |
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