Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5043407 | Hydrophilic fine gel particles and process for production thereof | Jun Hasegawa, Osamu Kobayashi, Yasuo Kataoka, Masayoshi Sekiya | 1991-08-27 |
| 4988568 | Hydrophilic fine gel particles and process for production thereof | Jun Hasegawa, Osamu Kobayashi, Yasuo Kataoka, Masayoshi Sekiya | 1991-01-29 |