Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5344463 | Hair dye compositions and methods utilizing 2-substituted-1-naphthol couplers | Alexander Chan, Yuh-Guo Pan, Richard DeMarco | 1994-09-06 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5344463 | Hair dye compositions and methods utilizing 2-substituted-1-naphthol couplers | Alexander Chan, Yuh-Guo Pan, Richard DeMarco | 1994-09-06 |