Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10442747 | Method for purifying methacrylic acid and method for producing methacrylic acid | Koji Kanaya, Shinpei Kato, Takafumi Toyoda | 2019-10-15 |
| 9238610 | Method for purifying methacrylic acid | Shinpei Kato, Hideyuki Sonobe, Manabu Hoshino | 2016-01-19 |
| 7557061 | Process for producing catalyst for methacrylic acid synthesis | Tomoki Fukui, Hiroyuki Naitou | 2009-07-07 |
| 7462262 | Vertical multitubular heat exchanger and distillation column system including the same | Akira Ogawa, Shigetoshi Shimauchi, Toshihiro Sato, Yasuhiro Kabu | 2008-12-09 |
| 7304179 | Method for producing methacrylic acid | Akira Ogawa | 2007-12-04 |