Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6960670 | Method for production of maleic anhydride | Tadayoshi Kawashima, Yoshitake Ishii, Souichi Yamada, Tetsuya Kajihara | 2005-11-01 |
| 6899452 | Apparatus and method for preparation and supply of polymerization inhibitor | Takeshi Nishimura, Kazuhiko Sakamoto, Kunihiko Suzuki | 2005-05-31 |
| 6676808 | Method for starting up distilling column | Yukihiro Matsumoto, Sei Nakahara, Misao Inada | 2004-01-13 |
| 6613196 | Method for stopping purifying column | Yukihiro Matsumoto, Sei Nakahara, Misao Inada | 2003-09-02 |
| 6581637 | Tank and a method for storing an easily polymerizable compound | Takeshi Nishimura, Kazuhiko Sakamoto, Osamu Dodo | 2003-06-24 |
| 6495045 | Solid substance removing device | Yukihiro Matsumoto, Sei Nakahara, Naoto Kasaya, Masakatsu Mori | 2002-12-17 |