Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4904798 | (4-amino-2-hydroxyphenyl-1-oxoisoindolenines, preparation thereof and hydrolysis thereof to 2-(4-amino-2-hydroxybenzoyl)benzoic acids | Joachim Kranz, Udo Mayer | 1990-02-27 |
| 4775451 | Preparation of water-soluble food-grade triphenylmethane colors | Wolfgang Habermann, Odo Mayer, Peter Hammes | 1988-10-04 |