Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857308 | Cosmetic powders | Junichi Fukasawa, Haruya Kato, Katsumasa Iwaya, Takako Shimizu | 1989-08-15 |
| 4814462 | Polyoxyalkylene carbozole adduct | Naoji Kurata, Yoshio Sugita, Keiji Kobayashi | 1989-03-21 |