Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7326811 | Method for production of (meth)acrylic acid by use of a shell-and-tube heat exchanger | Takeshi Nishimura, Sei Nakahara, Osamu Dodo | 2008-02-05 |
| 7282118 | Method for production of easily polymerizable substance and purification apparatus | Takeshi Nishimura, Sei Nakahara, Hidefumi Haramaki | 2007-10-16 |
| 7147048 | Shell-and-tube type heat exchanger and method for production of (meth) acrylic acid by use of the exchange | Takeshi Nishimura, Sei Nakahara, Osamu Dodo | 2006-12-12 |
| 7048834 | Method for purification of acrylic acid | Yoshitake Ishii, Kouji Ueno, Kazuhiko Sakamoto, Sei Nakahara, Masatoshi Ueoka +3 more | 2006-05-23 |
| 6848501 | Method for preventing plate type heat exchanger from blockage | Harunori Hirao, Yukihiro Matsumoto, Sei Nakahara, Osamu Dodo, Takeshi Nishimura +2 more | 2005-02-01 |
| 6831195 | Method for production of organic acid | Takeshi Nishimura, Kazuhiko Sakamoto, Hidefumi Haramaki | 2004-12-14 |
| 6657079 | Method for mixing gases and apparatus therefor | Tatsuaki Yoshimura, Takeshi Nishimura, Sei Nakahara | 2003-12-02 |
| 6642414 | Method for production of (meth) acrylic acid | Yukihiro Matsumoto, Sei Nakahara, Tatsuaki Yoshimura | 2003-11-04 |
| 6382313 | Heat exchanger for easily polymerizing substance-containing gas provided with gas distributing plate | Takeshi Nishimura, Kazuhiko Sakamoto, Hiroo Iwato | 2002-05-07 |