Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5959142 | Process for refining methacrylic acid | Kazuo Wakimura, Tadaharu Hase, Koji Fujita, Takeshi Isobe, Shin-ichi Tadokoro +1 more | 1999-09-28 |
| 5196578 | Purification process of methacrylic acid | Morimasa Kuragano, Takeshi Isobe, Nobutaka Ueda, Minoru Koshibe, Hirozo Segawa +2 more | 1993-03-23 |
| 4987252 | Quenching process of reaction product gas containing methacrylic acid and treatment method of quenched liquid | Morimasa Kuragano, Kozo Iwasaki, Takeshi Isobe, Isao Fukada, Minoru Koshibe +2 more | 1991-01-22 |
| 4879412 | Purification process of methacrylic acid | Kozo Iwasaki, Morimasa Kuragano, Minoru Koshibe, Katsuji Yoguchi, Yoshio Koyama | 1989-11-07 |