Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5371280 | Polymerization inhibitor and inhibiting method for vinyl compound | Hidefumi Haramaki, Kazuhiko Sakamoto, Yohji Akazawa, Masao Baba | 1994-12-06 |
| 5322960 | Method for inhibiting polymerization of (meth) acrylic acid and esters thereof | Kazuhiko Sakamoto, Takahiro Takeda, Yoji Akazawa, Masao Baba | 1994-06-21 |
| 5315037 | Process for purification of acrylic acid | Kazuhiko Sakamoto, Hiroaki Tanaka, Yoji Akazawa, Masao Baba | 1994-05-24 |
| 5248819 | Process for recovering methacrolein | Syoichi Matsumoto, Yosuke Ogata, Hiroshi Yoshida, Masao Baba | 1993-09-28 |
| 4956493 | Process for producing methacrylic ester | Syoichi Matsumoto, Hiroshi Yoshida, Masao Baba | 1990-09-11 |
| 4725291 | Method of collecting pyromellitic anhydride | Hiroshi Yoshida, Atsushi Ohkubo, Shinya Tanaka | 1988-02-16 |