Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863523 | Process for cleaning soiled solid molded articles | Alfred Meffert, Johann F. Fues | 1989-09-05 |
| 4830784 | Laundry detergents and cleaners with reduced requirement for conventional chemicals | Alfred Meffert, Brigitte Glesen, Ingo Wegener, Johann F. Fues | 1989-05-16 |
| 4820436 | Detergents for low laundering temperatures | Hans Andree, Horst Baumann, Manfred Biermann, Frantisek Jost, Horst-Juergen Krause +9 more | 1989-04-11 |