Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4935033 | Process for the aqueous dyeing of natural polyamide fibres using reactive dyes and assistant mixture of quaternary ammonium polyglycol, acid ester of polyglycol and fatty alcohol polyglycol ether | Dieter Mausezahl | 1990-06-19 |
| 4818248 | Process for dyeing natural or synthetic polyamide fibre materials with 1:1 metal complex dyes in presence of alkali metal fluordsilicate or amindnlum silicate | Gerhard Back | 1989-04-04 |
| 4681596 | Process for dyeing natural or synthetic polyamide fibre materials with 1:1 metal complex dyes or mixtures of dyes with fluoride, fluorosilicate or fluoroborate | Gerhard Back | 1987-07-21 |
| 4623358 | Process for dyeing natural or synthetic polyamide fibre materials with 1:1 metal complex dyes and fluoride, fluorosilicate or fluoroborate | Gerhard Back | 1986-11-18 |