Issued Patents All Time
Showing 1–25 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7420018 | Water-absorbing agent production process with surface crosslinking and ion blocking | Katsuyuki Wada, Hiroko Ueda, Naoko Takahashi, Kinya Nagasuna, Koji Miyake +1 more | 2008-09-02 |
| 7183456 | Water-absorbent resin and production process therefor | Yoshio Irie, Masatoshi Nakamura, Katsuyuki Wada, Shinichi Fujino, Kazuki Kimura +1 more | 2007-02-27 |
| 7153910 | Water-absorbent resin granule-containing composition and production process for water-absorbent resin granule | Yorimichi Dairoku, Kunihiko Ishizaki, Kazuhisa Hitomi, Katsuhiro Kajikawa, Soichi Yamada | 2006-12-26 |
| 7078458 | Method for production of hydrophilic resin | Yoshio Irie, Katsuhiro Kajikawa, Kunihiko Ishizaki | 2006-07-18 |
| 6998447 | Method for production of hydrophilic resin | Yoshio Irie, Katsuhiro Kajikawa, Kunihiko Ishizaki | 2006-02-14 |
| 6817557 | Process for transporting, storing, and producing a particulate water-absorbent resin | Hiroyuki Kakita, Tatsuo Maruo, Yoshio Irie | 2004-11-16 |
| 6720389 | Water-absorbent resin and production process therefor | Yoshio Irie, Masatoshi Nakamura, Katsuyuki Wada, Shinichi Fujino, Kazuki Kimura +1 more | 2004-04-13 |
| 6667372 | Continuous manufacturing method of water-absorbent polymer | Koji Miyake, Sachio Fujita, Takashi Nishigaki, Kunihiko Ishizaki, Katsuhiro Kajikawa | 2003-12-23 |
| 6599989 | Water-absorbent agents containing polycarboxylic amine chelating agents | Katsuyuki Wada, Hiroko Ueda, Naoko Takahashi, Kinya Nagasuna, Koji Miyake +1 more | 2003-07-29 |
| 6586549 | Water-absorbing composition and its use | Kazuki Kimura, Koji Miyake, Eri Goto, Katsuyuki Wada | 2003-07-01 |
| 6576713 | Water-absorbent resin powder and production process therefor | Kunihiko Ishizaki, Teruyuki Kanto, Nobuyuki Harada, Shinichi Fujino | 2003-06-10 |
| 6562879 | Water-absorbent resin powder and its production process and use | Hiroyuki Ikeuchi, Koji Miyake, Yoshio Irie, Kunihiko Ishizaki | 2003-05-13 |
| 6458921 | Water-absorbent resin granule-containing composition and production process for water-absorbent resin granule | Yorimichi Dairoku, Kunihiko Ishizaki, Kazuhisa Hitomi, Katsuhiro Kajikawa, Soichi Yamada | 2002-10-01 |
| 6388000 | Method for production of hydrophilic resin | Yoshio Irie, Katsuhiro Kajikawa, Kunihiko Ishizaki | 2002-05-14 |
| 6291636 | Manufacturing method of absorbent resin | Koji Miyake, Toru Yanase, Yoshifumi Adachi | 2001-09-18 |
| 6241928 | Method for production of shaped hydrogel of absorbent resin | Katsuhiro Kajikawa, Hideyuki Tahara, Koji Miyake, Akito Yano, Takanori Murakami | 2001-06-05 |
| 6228930 | Water-absorbent resin granule-containing composition and production process for water-absorbent resin granule | Yorimichi Dairoku, Kunihiko Ishizaki, Kazuhisa Hitomi, Katsuhiro Kajikawa, Soichi Yamada | 2001-05-08 |
| 6207772 | Method for production of cross-linked polymer | Toru Yanase, Yasuhiro Fujita, Kazuki Kimura | 2001-03-27 |
| 6194531 | Method for production of cross-linked polymer | Toru Yanase, Yasuhiro Fujita, Kazuki Kimura | 2001-02-27 |
| 6187902 | Production process of hydrophilic crosslinked polymer | Toru Yanase, Koji Miyake, Akito Yano | 2001-02-13 |
| 6174978 | Production process of water-absorbent resin | Takashi Namba, Yoshihiro Motono | 2001-01-16 |
| 6164455 | Process for classifying particulate hydrophilic polymer and sieving device | Hiroyuki Kakita, Tatsuo Maruo, Sumio Okuda | 2000-12-26 |
| 6140395 | Method of producing hydrophilic resin | Koji Miyake, Akito Yano | 2000-10-31 |
| 6133193 | Absorbent resin composition and method for production thereof | Katsuhiro Kajikawa, Masatoshi Nakamura | 2000-10-17 |
| 6107358 | Water-absorbent resin and method for production thereof | Nobuyuki Harada, Koji Miyake, Yoshihiro Motono, Hideyuki Tahara, Teruyuki Kanto +4 more | 2000-08-22 |