Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9320822 | Polyacrylic acid (salt) water-absorbing resin and manufacturing method therefor | Satoshi Matsumoto, Takashi Miyamoto, Toyofumi Sakai, Kunihiko Ishizaki | 2016-04-26 |
| 9029599 | Process for producing (meth)acrylic acid | Takashi Miyamoto, Toyofumi Sakai | 2015-05-12 |
| 8859809 | Device and process for crystallizing (meth)acrylic acid | Kazuhiko Sakamoto, Koji Ueno, Masatsugu Kitaura | 2014-10-14 |
| 8846977 | Crystallization unit for acrylic acid and method for crystallization of acrylic acid using the same | Kazuhiko Sakamoto, Koji Ueno, 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 | Kazuhiko Sakamoto, Koji Ueno, Harunori Hirao, Satoshi Nakagawa | 2014-04-22 |
| 8680331 | Process for production of (meth)acrylic acid | Kazuhiko Sakamoto, Koji Ueno, Satoshi Nakagawa | 2014-03-25 |
| 8680330 | Process for producing (meth) acrylic acid | Kazuhiko Sakamoto, Koji Ueno, Takashi Sugimoto, Masatsugu Kitaura, Satoshi Nakagawa +1 more | 2014-03-25 |
| 8530699 | Process for production of (meth) acrylic acid | Koji Ueno | 2013-09-10 |
| 7514581 | Method for purifying and producing acrylic acid | Koji Ueno | 2009-04-07 |
| 7381839 | Method for producing acrylic acid | Koji Ueno | 2008-06-03 |
| 7048834 | Method for purification of acrylic acid | Kouji Ueno, Kazuhiko Sakamoto, Sei Nakahara, Masatoshi Ueoka, Tetsuji Mitsumoto +3 more | 2006-05-23 |
| 6960670 | Method for production of maleic anhydride | Tadayoshi Kawashima, Kei Hamamoto, Souichi Yamada, Tetsuya Kajihara | 2005-11-01 |
| 6888025 | Method for absorbing acrylic acid and method for purifying acrylic acid | Harunori Hirao, Yukihiro Matsumoto, Takeshi Nishimura | 2005-05-03 |
| 6713648 | Method for absorbing acrylic acid and method for purifying acrylic acid | Harunori Hirao, Yukihiro Matsumoto, Takeshi Nishimura | 2004-03-30 |
| 6149197 | Structure of front body of automobiles | Mitsuru Yuda | 2000-11-21 |
| 5857687 | Bump stop seat structure | — | 1999-01-12 |