Issued Patents 2004
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6831195 | Method for production of organic acid | Tetsuji Mitsumoto, Kazuhiko Sakamoto, Hidefumi Haramaki | 2004-12-14 |
| 6755943 | Perforated tray without downcomer, perforated tray tower without downcomer | Noriaki Mizutani, Yukihiro Matsumoto | 2004-06-29 |
| 6713648 | Method for absorbing acrylic acid and method for purifying acrylic acid | Harunori Hirao, Yoshitake Ishii, Yukihiro Matsumoto | 2004-03-30 |
| 6695928 | Method for production of (meth) acrylic acid and/or (meth)acrylic esters | Sei Nakahara, Masatoshi Ueoka | 2004-02-24 |
| 6677482 | Method of manufacturing (meth) acrylic acid | Yukihiro Matsumoto | 2004-01-13 |