Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6737069 | Cosmetic compositions containing amphoteric polyurethanes | Katsuya Koyama, Toshitaka Tsuzuki, Tomohiro Hashimoto | 2004-05-18 |
| 6692729 | Cosmetic resin composition and cosmetic using the same | Takahiro SAKURAI, Katsuya Koyama, Toshitaka Tsuzuki, Tomohiro Hashimoto | 2004-02-17 |