Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4572220 | Composition for altering the configuration of hair | Du Y. Hsiung, Chester A. Davis | 1986-02-25 |
| 4391286 | Hair conditioning and composition therefor | Du Y. Hsiung, Chester A. Davis | 1983-07-05 |