Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D519674 | Hair fluid applicator | Lorrayne Yen Chu, Marco Wo | 2006-04-25 |
| 6691712 | Hair dye applicator | Lorrayne Yen Chu, John De Piano, Philip H. Parda | 2004-02-17 |
| 6357449 | Hair dye applicator | Lorrayne Yen Chu, John De Piano, Philip H. Parda | 2002-03-19 |
| D442331 | Hair dye applicator | Anthony Pannozzo, John DePiano, Lorrayne Yen Chu | 2001-05-15 |
| 6145513 | Hair dye applicator | Lorrayne Yen Chu, John De Piano | 2000-11-14 |