Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4614804 | Anthraquinoid dyes | Gerhard Epple, Reinhold Krallmann, Wolf-Dieter Kermer | 1986-09-30 |
| 4537597 | Navy blue mixtures of disperse mono-azo dyes for cellulose acetate | Udo Bergmann, Helmut Degen, Guenter Hansen, Reinhold Krallmann | 1985-08-27 |