Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5686376 | Chelating agents for improved color fidelity | John Robert Rusche, Axel Masschelein | 1997-11-11 |
| 5643865 | Concentrated biodegradable quaternary ammonium fabric softener compositions containing quaternary ammonium compounds with short fatty acid alkyl chains | Robert Mermelstein, John Henry Shaw, Jr., Errol Hoffman Wahl | 1997-07-01 |