Issued Patents All Time
Showing 51–75 of 95 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6736200 | Heat-exchanging method for easily polymerizable compound | Kazuto OKAZAKI, Sei Nakahara, Hiroo Iwato | 2004-05-18 |
| 6713648 | Method for absorbing acrylic acid and method for purifying acrylic acid | Harunori Hirao, Yoshitake Ishii, Takeshi Nishimura | 2004-03-30 |
| 6677482 | Method of manufacturing (meth) acrylic acid | Takeshi Nishimura | 2004-01-13 |
| 6676808 | Method for starting up distilling column | Kei Hamamoto, Sei Nakahara, Misao Inada | 2004-01-13 |
| 6667419 | Method for absorption of acrylic compound and apparatus therefor | Takeshi Nishimura, Misao Inada, Kazuhiko Sakamoto | 2003-12-23 |
| 6666956 | Method for distilling polymerizable compound or liquid containing polymerizable compound | Takeshi Nishimura | 2003-12-23 |
| 6651731 | Method for cooling heating grade heat exchanger in unsteady state | Takeshi Nishimura, Sei Nakahara, Motomi Nakamura | 2003-11-25 |
| 6642414 | Method for production of (meth) acrylic acid | Tetsuji Mitsumoto, Sei Nakahara, Tatsuaki Yoshimura | 2003-11-04 |
| 6641700 | Purifying apparatus possessing vapor dispersing device | Hajime Matsumoto, Takeshi Nishimura | 2003-11-04 |
| 6638432 | Method of treating waste liquid | Takeshi Nishimura, Kazuto OKAZAKI, Kiyotaka Watanabe | 2003-10-28 |
| 6635148 | Method for refining easily polymerizable matter-contained substance and apparatus therefor | Takeshi Nishimura | 2003-10-21 |
| 6632329 | Distillation apparatus and distilling method | Noriaki Mizutani, Kazuhiko Sakamoto, Kenji Sanada | 2003-10-14 |
| 6627047 | Method for preventing polymerization in thin-film type evaporating device | Yuichi Ijiri, Takeshi Nishimura | 2003-09-30 |
| 6620969 | Shell-and-tube heat exchanger and method for inhibiting polymerization in the shell-and-tube heat exchanger | Takeshi Nishimura | 2003-09-16 |
| 6613196 | Method for stopping purifying column | Kei Hamamoto, Sei Nakahara, Misao Inada | 2003-09-02 |
| 6588450 | Storage tank for viscous oil containing easily polymerizable compounds | Yuichi Ijiri, Sei Nakahara, Fumio Munechika | 2003-07-08 |
| 6585862 | Apparatus and method for handling easily polymerizable compound | Takeshi Nishimura | 2003-07-01 |
| 6566551 | Method for preventing effluent gas pipe from blocking | Takeshi Nishimura, Sei Nakahara, Misao Inada, Harunori Hirao, Mamoru Takamura | 2003-05-20 |
| 6525216 | Method of manufacturing (meth)acrylic acid | Takeshi Nishimura | 2003-02-25 |
| 6495045 | Solid substance removing device | Kei Hamamoto, Sei Nakahara, Naoto Kasaya, Masakatsu Mori | 2002-12-17 |
| 6441228 | Apparatus and process for producing (meth)acrylic acid | Sei Nakahara, Kazuhiko Sakamoto, Kenji Sanada, Masatoshi Ueoka | 2002-08-27 |
| 6436245 | Apparatus for the purification of organic compounds containing readily-blocking substances and process thereof | Takeshi Nishimura | 2002-08-20 |
| 6431261 | Shell and tube type heat exchanger | Takeshi Nishimura, Daisuke Nakamura, Masakatsu Mori, Osamu Dodo | 2002-08-13 |
| 6416503 | Matrix for iontophoreses | Yasuyuki Suzuki, Katsumi Iga, Hiroaki Okada | 2002-07-09 |
| 6409886 | Process for inhibiting the polymerization of easily-polymerizable compounds | Takeshi Nishimura | 2002-06-25 |