Schumann; Hans-Joachim
Patent Applications and Registrations
Patent applications and USPTO patent grants for Schumann; Hans-Joachim.The latest application filed is for "color photographic recording material containing a color coupler of the pyrazoloazole series".
- Schumann; Hans-Joachim - Cologne DE
| Patent | Date |
|---|---|
| Color photographic recording material containing a color coupler of the pyrazoloazole series Grant 4,835,094 - Wolff , et al. May 30, 1 | 1989-05-30 |
| Photographic recording process Grant 4,543,308 - Schumann , et al. September 24, 1 | 1985-09-24 |
| Process for the luminescense-spectroscopic examination of coatings and coating profiles Grant 4,460,274 - Schumann , et al. July 17, 1 | 1984-07-17 |
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