Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4649193 | Water-soluble dyestuffs containing fibre-reactive groups of the vinylsulfone series and the fluoro-s-triazinyl-amino series | Fritz Meininger, Joachim W. Otten, deceased, by Anna G. Rudolph nee Otten, heir | 1987-03-10 |
| 4622390 | Water-soluble disazo compounds containing an amino naphthol-disulfonic acid moiety as a coupling component and fibre-reactive groups | Fritz Meininger, Ernst Hoyer, Joachim W. Otten, deceased, by Anna G. Rudolph nee Otten, heir, Rudolf Fass | 1986-11-11 |
| 4515598 | Process for dyeing and printing fiber materials containing hydroxy and/or carbonamide groups with reactive dye containing both vinyl sulphonyl and fluoro-triazinyl groups | Fritz Meininger, Joachim W. Otten, deceased, by Anna G. Rudolph nee Otten, heir | 1985-05-07 |
| 4361698 | Process for the manufacture of dihalogenotriazinylamino-naphthol compounds | Joachim W. Otten, deceased, by Anna G. Rudolph nee Otten, heir, by Fritz Meininger | 1982-11-30 |