Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8530714 | Method for production of lower olefin | Hirofumi Ito, Kazunori Honda, Koji Oyama, Kazutaka Hiraoka, Atsushi Okita | 2013-09-10 |
| 8450550 | Process and apparatus for producing propylene | Hirofumi Ito, Jiro Yoshida, Shuichi Funatsu, Koji Ooyama | 2013-05-28 |
| 6585807 | Recovery method of ammonia from gaseous mixture | Hiroshi Umino, Hirofumi Ito, Masamichi Mizukami | 2003-07-01 |
| 5935534 | Crystallization method | Hiroshi Umino, Hiromitsu Shibuya, Kazuo Kikuchi, Masahiko Yamagishi, Kiyoshi Takahashi | 1999-08-10 |