Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6691712 | Hair dye applicator | Lorrayne Yen Chu, May Mu, Philip H. Parda | 2004-02-17 |
| 6357449 | Hair dye applicator | Lorrayne Yen Chu, May Mu, Philip H. Parda | 2002-03-19 |
| 6145513 | Hair dye applicator | Lorrayne Yen Chu, May Mu | 2000-11-14 |