Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7048834 | Method for purification of acrylic acid | Yoshitake Ishii, Kouji Ueno, Kazuhiko Sakamoto, Sei Nakahara, Masatoshi Ueoka +3 more | 2006-05-23 |
| 6566551 | Method for preventing effluent gas pipe from blocking | Takeshi Nishimura, Yukihiro Matsumoto, Sei Nakahara, Misao Inada, Harunori Hirao | 2003-05-20 |
| 6294056 | Distillation method and distillation apparatus | Yukihiro Matsumoto, Kazukiyo Arakawa, Osamu Dodo, Hiroo Iwato | 2001-09-25 |
| 5872288 | Process for producing (meth) acrylic acid | Hidefumi Haramaki, Osamu Dodo | 1999-02-16 |
| 5218146 | Process for production of acrylic acid | Masahiro Takata, Shinichi Uchida | 1993-06-08 |