Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4272517 | Permanent waving compositions | Koji Yoneda, Takehisa Ohashi, Masami Onishi | 1981-06-09 |
| 4230869 | Process for preparing 5-(4-hydroxyphenyl)hydantoin | Koji Yoneda, Takehisa Ohashi, Tomoaki Nagamachi, Satomi Takahashi | 1980-10-28 |