Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6858761 | Process for preserving resin catalyst for addition reaction of alkylene oxide and utilization of this process | Tokumasa Ishida, Masahiro Uemura | 2005-02-22 |
| 6660881 | Process for producing (meth)acrylic ester | Hajime Matsumoto, Tetsuya Kajihara, Yasuhiro Shingai, Masatoshi Ueoka, Masahiro Uemura +2 more | 2003-12-09 |
| 6610879 | Reaction method by using heterogeneous catalyst and reaction apparatus therefor | Tetsuya Kajihara, Yasuhiro Shingai, Hajime Matsumoto, Tokumasa Ishida | 2003-08-26 |
| 6596129 | Distillation process for easily polymerizable substance-containing solution | Takeshi Nishimura, Yasuhiro Shingai, Hajime Matsumoto | 2003-07-22 |
| 6534625 | Process for producing hydroxyalkyl (meth)acrylate | Hajime Matsumoto, Tokumasa Ishida | 2003-03-18 |
| 6465681 | Production process for hydroxyalkyl (meth)acrylate | Masahiro Uemura, Tokumasa Ishida, Tetsuya Kajihara, Yasuhiro Shingai, Tadayoshi Kawashima | 2002-10-15 |
| 6465682 | Production process for hydroxyalkyl ester | Tokumasa Ishida, Hajime Matsumoto, Hidekazu Mizohara | 2002-10-15 |
| 6458988 | Production process for hydroxyalkyl(meth)acrylate | Hajime Matsumoto, Tokumasa Ishida, Yasuhiro Shingai, Masatoshi Ueoka | 2002-10-01 |
| 6452040 | Production process for hydroxyalkyl (meth)acrylate | Yasuhiro Shingai, Sei Nakahara, Masakazu Asami, Masatoshi Ueoka | 2002-09-17 |
| 6414182 | Production process for hydroxyalkyl ester | Yasuhiro Shingai, Tokumasa Ishida, Fumio Shibusawa, Tetsuya Kajihara, Hajime Matsumoto +1 more | 2002-07-02 |
| 6380424 | Purification process for hydroxyalkyl (meth)acrylate | Fumio Shibusawa, Yasuhiro Shingai, Masatoshi Ueoka | 2002-04-30 |
| 6123323 | Gas-liquid dispersion devices provided with partitioning members, gas-liquid contact apparatus, and wastewater treatment systems provided with the same | Shigeharu Yoneshima, Mikihiko Kanda, Yusuke Shiota | 2000-09-26 |