Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4271190 | Guanidinium salts, processes for their manufacture as well as microbicidal preparations containing these compounds | Gunter Bertelmann, Ulrich Holtschmidt | 1981-06-02 |
| 4198332 | Process for the preparation of solutions of urea-formaldehyde resins for the impregnation and coating of carrier webs for coating the surface of wood-based panels | Ulrich Holtschmidt, Eckehard Schamberg, Dieter Hellwig | 1980-04-15 |
| 4189311 | 1,3-Di-N-decyl-2-methyl-imidazolium chloride or bromide and microbiocidal preparation containing this compound | Ulrich Holtschmidt | 1980-02-19 |