Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6676808 | Method for starting up distilling column | Kei Hamamoto, Yukihiro Matsumoto, Sei Nakahara | 2004-01-13 |
| 6667419 | Method for absorption of acrylic compound and apparatus therefor | Yukihiro Matsumoto, Takeshi Nishimura, Kazuhiko Sakamoto | 2003-12-23 |
| 6613196 | Method for stopping purifying column | Kei Hamamoto, Yukihiro Matsumoto, Sei Nakahara | 2003-09-02 |
| 6566551 | Method for preventing effluent gas pipe from blocking | Takeshi Nishimura, Yukihiro Matsumoto, Sei Nakahara, Harunori Hirao, Mamoru Takamura | 2003-05-20 |
| 6372944 | Liquid withdrawing tray for purification column, purification column, and method for purification | Hajime Matsumoto, Takeshi Nishimura, Yukihiro Matsumoto, Sei Nakahara | 2002-04-16 |