Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4820335 | 1-substituted imidazole-5-carboxylic acid derivatives, their preparation and their use as biocides | Thomas Maier, Klaus Bauer, Hermann Bieringer, Helmut Burstell, Burkhard Sachse | 1989-04-11 |
| 4808213 | 2,3,6-substituted phenylimidazole derivatives and the use thereof as growth regulators | Hilmar Mildenberger, Helmut Burstell | 1989-02-28 |