Grychtol; Klaus
Patent Applications and Registrations
Patent applications and USPTO patent grants for Grychtol; Klaus.The latest application filed is for "azo dye 2:1-chromium complexes".
- Grychtol; Klaus - Bad Durkheim DE
- Grychtol; Klaus - Bad Duerkheim DE
| Patent | Date |
|---|---|
| Azo dye 2:1-chromium complexes Grant 4,560,744 - Baumann , et al. December 24, 1 | 1985-12-24 |
| Polymeric dyes derived from bis-reactive methylene compounds and aromatic di-aldehydes for paper Grant 4,397,651 - Degen , et al. August 9, 1 | 1983-08-09 |
| Cationic dyes Grant 4,353,833 - Bruder , et al. October 12, 1 | 1982-10-12 |
| Dyed paper Grant 4,323,362 - Degen , et al. April 6, 1 | 1982-04-06 |
| Basic dyes Grant 4,280,964 - Grychtol July 28, 1 | 1981-07-28 |
| Methine dyes for paper and amonically-modified fibers Grant 4,256,458 - Degen , et al. March 17, 1 | 1981-03-17 |
| Triphenylmethane dyes Grant 4,223,144 - Kast , et al. September 16, 1 | 1980-09-16 |
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