Issued Patents All Time
Showing 26–43 of 43 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7285615 | Particulate water-absorbent resin composition | Yoshifumi Adachi, Toshimasa Kitayama | 2007-10-23 |
| 7265190 | Process and apparatus for production of water-absorbent resin | Yasuhiro Fujita, Shinichi Fujino, Hirofumi Shibata, Kenji Tada, Yoshio Irie | 2007-09-04 |
| 7250459 | Absorbent resin composition | Kinya Nagasuna, Yoshihiko Masuda, Nobuyuki Harada, Yoshihiro Motono, Kunihiko Ishizaki | 2007-07-31 |
| 7153910 | Water-absorbent resin granule-containing composition and production process for water-absorbent resin granule | Kunihiko Ishizaki, Takumi Hatsuda, Kazuhisa Hitomi, Katsuhiro Kajikawa, Soichi Yamada | 2006-12-26 |
| 7091253 | Water-absorbent resin, hydropolymer, process for producing them, and uses of them | Yoshio Irie, Shinichi Fujino, Yasuhiro Fujita, Takashi Azumi, Kunihiko Ishizaki | 2006-08-15 |
| 6992144 | Water-absorbent agent, method for production thereof, and water-absorbent composition | Kinya Nagasuna, Yoshihiko Masuda, Nobuyuki Harada, Yoshihiro Motono, Kunihiko Ishizaki | 2006-01-31 |
| 6906159 | Water-absorbent resin, hydropolymer, process for producing them, and uses of them | Yoshio Irie, Shinichi Fujino, Yasuhiro Fujita, Takashi Azumi, Kunihiko Ishizaki | 2005-06-14 |
| 6875511 | Production process for particulate water-absorbent resin | Yoshio Irie, Kenji Tada, Shinichi Fujino, Makoto Nagasawa | 2005-04-05 |
| 6867269 | Water-absorbent resin and production process therefor | Shigeru Sakamoto, Yasuhiro Fujita, Yoshio Irie | 2005-03-15 |
| 6458921 | Water-absorbent resin granule-containing composition and production process for water-absorbent resin granule | Kunihiko Ishizaki, Takumi Hatsuda, Kazuhisa Hitomi, Katsuhiro Kajikawa, Soichi Yamada | 2002-10-01 |
| 6228930 | Water-absorbent resin granule-containing composition and production process for water-absorbent resin granule | Kunihiko Ishizaki, Takumi Hatsuda, Kazuhisa Hitomi, Katsuhiro Kajikawa, Soichi Yamada | 2001-05-08 |
| 6207796 | Production process for hydrophilic polymer | Koji Miyake, Yasuhiro Fujita, Yoshio Irie | 2001-03-27 |
| 6107358 | Water-absorbent resin and method for production thereof | Nobuyuki Harada, Koji Miyake, Yoshihiro Motono, Hideyuki Tahara, Takumi Hatsuda +4 more | 2000-08-22 |
| 6071976 | Water absorbing agent, manufacturing method thereof, and manufacturing machine thereof | Toshimasa Kitayama, Kinya Nagasuna, Takanori Murakami, Akito Yano, Kunihiko Ishizaki | 2000-06-06 |
| 5610208 | Water-absorbent agent, method for production thereof, and water-absorbent composition | Kinya Nagasuna, Yoshihiko Masuda, Nobuyuki Harada, Yoshihiro Motono, Kunihiko Ishizaki | 1997-03-11 |
| 5422405 | Method for production of absorbent resin | Kinya Nagasuna, Kazutaka Yano, Toru Yanase, Yoshihiko Masuda | 1995-06-06 |
| 4892902 | Method for production of aqueous dispersion of inorganic pigment | Shobu Shioji, Masazumi Sasabe, Teruaki Fujiwara | 1990-01-09 |
| 4818783 | Method for production of aqueous dispersion of inorganic pigment | Shobu Shioji, Masazumi Sasabe, Teruaki Fujiwara | 1989-04-04 |