Issued Patents All Time
Showing 1–25 of 73 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10294315 | Polyacrylic acid (salt)-based water absorbent resin and method for producing same | Satoshi Matsumoto, Kunihiko Ishizaki, Kazushi Torii, Shin-ichi Fujino | 2019-05-21 |
| 9187579 | Particle-shaped water absorbing agent and method for producing the same | Hiroyuki Ikeuchi, Hirotama Fujimaru, Makoto Nagasawa, Shigeru Sakamoto, Kazushi Torii +1 more | 2015-11-17 |
| 8859809 | Device and process for crystallizing (meth)acrylic acid | Koji Ueno, Yoshitake Ishii, Masatsugu Kitaura | 2014-10-14 |
| 8846977 | Crystallization unit for acrylic acid and method for crystallization of acrylic acid using the same | Koji Ueno, Yoshitake Ishii, Masatsugu Kitaura | 2014-09-30 |
| 8704000 | Method for crystallizing (meth)acrylic acid and method for regulating content of polymerization inhibitor in product (meth)acrylic acid | Koji Ueno, Yoshitake Ishii, Harunori Hirao, Satoshi Nakagawa | 2014-04-22 |
| 8680331 | Process for production of (meth)acrylic acid | Koji Ueno, Yoshitake Ishii, Satoshi Nakagawa | 2014-03-25 |
| 8680330 | Process for producing (meth) acrylic acid | Koji Ueno, Yoshitake Ishii, Takashi Sugimoto, Masatsugu Kitaura, Satoshi Nakagawa +1 more | 2014-03-25 |
| 8625099 | Particle concentration measuring device | Hiroshi Kawakita, Hiroyuki Okami, Yusuke Iso, Ryuta Okamoto | 2014-01-07 |
| 8426640 | Method for producing acrylic acid, and method for producing hydrophilic resin and method for producing water-absorbing resin using production method thereof | Masaru Ishikawa | 2013-04-23 |
| 8278481 | Method for producing (meth)acrylic acid | Naoki Serata, Toyofumi Sakai | 2012-10-02 |
| 7977503 | Polymerization inhibition method | — | 2011-07-12 |
| 7855986 | Communication terminal and method for handling power off time | Hironori Tanaka | 2010-12-21 |
| 7541490 | Method for production of acrylic acid and apparatus for production of acrylic acid | Kazuto OKAZAKI, Yukihiro Matsumoto, Osamu Dodo | 2009-06-02 |
| 7468167 | Method for starting up reactor and reactor system | Yukihiro Matsumoto, Takeshi Nishimura, Hideki Sogabe, Osamu Dodo | 2008-12-23 |
| 7399928 | Flexible flat cable and method of manufacturing the same | — | 2008-07-15 |
| 7377307 | Vertical heat exchanger | Yuichi Ijiri, Takeshi Nishimura, Osamu Dodo | 2008-05-27 |
| 7327827 | X-ray high voltage device | Hiroshi Takano | 2008-02-05 |
| 7319167 | Method for distilling (meth)acrylic acid and/or the ester thereof | Sei Nakahara, Yukihiro Matsumoto | 2008-01-15 |
| 7235158 | Perforated tray column without downcomer | Yukihiro Matsumoto, Kenji Sanada | 2007-06-26 |
| 7198766 | Method for production of acrylic acid and apparatus for production of acrylic acid | Kazuto OKAZAKI, Yukihiro Matsumoto, Osamu Dodo | 2007-04-03 |
| 7060230 | Apparatus for treatment of waste gas | Kazuto OKAZAKI, Takeshi Nishimura, Osamu Dodo | 2006-06-13 |
| 7049366 | Acrylic acid composition and its production process, and process for producing water-absorbent resin using this acrylic acid composition, and water-absorbent resin | Sei Nakahara, Kunihiko Ishizaki, Hirotama Fujimaru, Yasuhisa Nakashima | 2006-05-23 |
| 7048834 | Method for purification of acrylic acid | Yoshitake Ishii, Kouji Ueno, Sei Nakahara, Masatoshi Ueoka, Tetsuji Mitsumoto +3 more | 2006-05-23 |
| 7029518 | Method and apparatus for the preparation of clean gases | Toshiaki Fujii, Tsukuru Suzuki, Hidetomo Suzuki | 2006-04-18 |
| 7005544 | Method for preventing polymerization in an acrylic acid manufacturing process | Kazuo Ohkouchi, Tomohiro Nakae | 2006-02-28 |