Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5879589 | Process for antistatic treatment of resin and antistatic resin composition | Seiichi Miyanaga, Yasuhiro Doi, Kenichi Nishimura, Isao Nishi | 1999-03-09 |
| 4727097 | Process for preparing highly reactive, water-absorptive resin | Takatoshi Kobayashi, Harumasa Yamasaki | 1988-02-23 |
| 4666975 | Absorptive material | Harumasa Yamasaki, Takatoshi Kobayashi, Osamu Ito, Akira Sakurai | 1987-05-19 |
| 4639491 | Dispersion stabilizer for water-in-oil suspension polymerization | Akihiro Kondo, Rikio Tsushima | 1987-01-27 |
| 4497930 | Process for producing highly water absorptive polymer | Harumasa Yamasaki, Takatoshi Kobayashi | 1985-02-05 |
| 4459396 | Process for producing water-absorbent materials having excellent water absorption properties | Harumasa Yamasaki, Shoichiro Harada | 1984-07-10 |