Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D317644 | Combined pressure regulator filter and lubricator | Yasuyuki Ito, Hisanobu Niwa | 1991-06-18 |
| D317315 | Lubricator | Kouichi Miyake, Hisanobu Niwa | 1991-06-04 |
| D317346 | Filter | Yasuyuki Ito, Hisanobu Niwa | 1991-06-04 |
| 4875911 | Apparatus for separating gaseous mixtures | Shinji Mizuno, Humio Kawato, Kazuyoshi Hanazawa, Yoshinari Ogasawara | 1989-10-24 |