Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11371656 | Inspection apparatus for hydrogen gas dispenser | Masaru Ito, Koichi Tsuda | 2022-06-28 |
| 9869614 | Sampling apparatus and sampling method | Kazuto Matsumoto, Shinichi Omoteda, Ken Nishida | 2018-01-16 |
| 9080131 | Method for producing high concentration ozonated water and device for producing high concentration ozonated water | Kunihiko Koike, Sadaki Nakamura, Naohisa Makihira, Koichi Izumi, Norikazu Hohshi +1 more | 2015-07-14 |
| 8945278 | Method and apparatus for concentrating ozone gas | Naohisa Makihira, Sadaki Nakamura, Kunihiko Koike | 2015-02-03 |
| 8012241 | Method and apparatus for condensing ozone gas | Kunihiko Koike, Sadaki Nakamura, Koichi Izumi | 2011-09-06 |
| 6344130 | Method for continuously generating highly concentrated ozone gas | Kunihiko Koike, Tatsuo Fukuda | 2002-02-05 |
| 5746841 | Process for passivating treatment of piping system for high-purity gas | Kunihiko Koike | 1998-05-05 |