Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5616290 | Gas-liquid contacting apparatus | Makiichi Ishihara, Takakazu Sunada, Shigeo Hasegawa, Naohiko Ukawa, Toru Takashina +4 more | 1997-04-01 |
| 5605655 | Gas-liquid contacting apparatus | Makiichi Ishihara, Takakazu Sunada, Shigeo Hasegawa, Naohiko Ukawa, Toru Takashina +4 more | 1997-02-25 |
| 5034028 | Exhaust gas treating method | Naohiko Ukawa, Susumu Okino, Taku Shimizu | 1991-07-23 |