Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4791205 | Bisbenzoxazolylnaphthalenes containing sulfonate or sulfonamide groups, a process for their preparation and their use | Erich Schinzel, Thomas Martini | 1988-12-13 |
| 4447350 | Mixtures of optical brighteners and their use | Thomas Martini, Erich Schinzel, Herbert Friedrich, Heinz Probst | 1984-05-08 |
| 4416795 | Mixtures of optical brighteners | Thomas Martini, Erich Schinzel, Heinz Probst | 1983-11-22 |
| 4376214 | Process for the preparation of naphthalene-1,4-dicarboxylic acid | Erich Schinzel | 1983-03-08 |
| 4375556 | Process for the preparation of naphthalene-1,4-dicarboxylic acid | Erich Schinzel | 1983-03-01 |
| 4271036 | Colorless formulations of optical brighteners from the series of bis-triazinylamino-stilbene-disulfonic acid compounds | Klaus-Martin Uhl, Thomas Martini | 1981-06-02 |