Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865827 | Process for removing nitrogen oxides | Takahiro Tachi, Hiroshi Kawagoshi, Hisao Yamashita, Tomoichi Kamo, Shinpei Matsuda +2 more | 1989-09-12 |
| 4822384 | Oxygen enriching apparatus with means for regulating oxygen concentration of oxygen enriched gas | Terukuni Ikuta, Masamichi TAMADA | 1989-04-18 |
| 4795859 | Control device for electric train | Junichiro Yamada | 1989-01-03 |