Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6303711 | Water-absorbent or water-retention material and production method thereof | Takashi Sumiya, Masami Koike, Mihoko Nomoto | 2001-10-16 |
| 6130304 | Water-absorbent or water-retention material and production method thereof | Takashi Sumiya, Masami Koike, Mihoko Nomoto | 2000-10-10 |
| 5904028 | Fragrance and deodorant materials | Yukio Zenitani | 1999-05-18 |
| 5838863 | Cable sealed with a polyurethane resin and sealing process of the same | Yukio Zenitani, Masami Koike | 1998-11-17 |
| 5743213 | Treating material for animal excretions and method of producing the same | — | 1998-04-28 |
| 5664523 | Materials for the treatment of pet excretions | Kengo Ochi, Noriyuki Kimura, Yukio Zenitani, Masami Koike | 1997-09-09 |
| 5453323 | Superabsorbent polymer having improved absorbency properties | Douglas R. Chambers, Hubert H. Fowler, Jr., Fusayoshi Masuda | 1995-09-26 |
| 5145906 | Super-absorbent polymer having improved absorbency properties | Douglas R. Chambers, Hubert H. Fowler, Jr., Fusayoshi Masuda | 1992-09-08 |
| 5002986 | Fluid absorbent compositions and process for their preparation | Takashi Sumiya | 1991-03-26 |
| 4710298 | Auxiliary for dewatering of sludge | Kimihiko Noda, Yoichi Hasegawa | 1987-12-01 |