Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812110 | Oil-free screw compressor with bypass of cooled discharged gas | Kazuo Kubo, Noboru Tsuboi, Kunihiko Nishitani | 1989-03-14 |
| 4781553 | Screw vacuum pump with lubricated bearings and a plurality of shaft sealing means | Kunihiko Nishitani, Noboru Tsuboi | 1988-11-01 |