Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5330956 | Poisoning-resistant catalyst, process for production thereof, and process for using said catalyst | Hiroshi Kawagoshi, Hisao Yamashita | 1994-07-19 |
| 5104426 | Method of and apparatus for separating gas mixture | Ryokichi Yamada, Shuntaro Koyama, Akio Yamamoto, Naoya Iwama, Yasuo Funayama +1 more | 1992-04-14 |
| 4746332 | Process for producing high purity nitrogen | Masaomi Tomomura, Shunsuke Nogita, Kiyoshi Ichihara, Takazumi Ishizu | 1988-05-24 |