Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6133226 | Non-cationic systems for dryer sheets | Charles Nathaniel Knowlton, Feng-Lung Gordon Hsu | 2000-10-17 |
| 5964939 | Dye transfer inhibiting fabric softener compositions | Daniel Fox, Feng-Lung Gordon Hsu | 1999-10-12 |