Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4598729 | Negative pressure control valve | Mitikatu Naito, Kiyotosi Yano, Kunihiro Tsuzuki, Masaaki Tanaka, Michio Kawagoe | 1986-07-08 |
| 4440139 | Vacuum control valve | Mitikatu Naito, Kiyotosi Yano, Kunihiro Tsuzuki | 1984-04-03 |
| 4416243 | Vacuum control valve | Mitikatu Naito, Kiyotosi Yano | 1983-11-22 |