Loeffler; Hermann
Patent Applications and Registrations
Patent applications and USPTO patent grants for Loeffler; Hermann.The latest application filed is for "process of preparing diaminopyridine compounds".
- Loeffler; Hermann - Speyer DE
| Patent | Date |
|---|---|
| Process of preparing diaminopyridine compounds Grant 5,536,840 - Lamm , et al. July 16, 1 | 1996-07-16 |
| Dye mixtures containing azo dyes having a coupling component from the diaminopyridine series Grant 5,403,363 - Loeffler , et al. April 4, 1 | 1995-04-04 |
| Reactive dyes with two or three nitrogen-containing haloheterocycles as reactive system Grant 5,245,020 - Jessen , et al. September 14, 1 | 1993-09-14 |
| Reactive dyes with two or three nitrogen-containing haloheterocycles as reactive system Grant 5,149,789 - Jessen , et al. September 22, 1 | 1992-09-22 |
| Heterocyclic azo dyes containing cyanothiophene derivatives as diazo components and diaminopyridines as coupling components Grant 4,855,413 - Dehnert , et al. August 8, 1 | 1989-08-08 |
| Diaminopyridine azo dyes having acyloxy radicals substituted on the diaminopyridine Grant 4,855,412 - Dehnert , et al. August 8, 1 | 1989-08-08 |
| Isothiazolylazo dyes Grant 4,774,324 - Loeffler , et al. September 27, 1 | 1988-09-27 |
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