Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4995885 | Concentrated aqueous dye solutions for dyeing paper | — | 1991-02-26 |
| 4968415 | Process for selective flotation of phosphorus minerals | Werner Ritschel, Kurt Bauer | 1990-11-06 |
| 4450116 | 3-Oxypropyleneimino-bis-(methylene phosphonic acids) and their salts, process for their manufacture and their use | Erich Hoffman, Johann Franz Hanauer, Kurt Bauer | 1984-05-22 |
| 4182882 | Process for the production of pyranthrones or flavanthrones | Jurgen Markert | 1980-01-08 |