Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4362530 | Dyeing auxiliaries containing mixed anionic, cationic and non-ionic ethylene oxide adducts | Rene Fricker | 1982-12-07 |
| 4191532 | Organic compounds | Rene Fricker | 1980-03-04 |