Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4951638 | Screw type mechanical supercharger | Noboru Tsuboi, Kazuo Kubo | 1990-08-28 |
| 4826412 | Mechanically driven screw supercharger | Kazuo Kubo, Itsuro Nomura, Noboru Tsuboi | 1989-05-02 |
| 4812110 | Oil-free screw compressor with bypass of cooled discharged gas | Kazuo Kubo, Noboru Tsuboi, Ituro Nomura | 1989-03-14 |
| 4808095 | Screw vacuum pump | Noboru Tsuboi | 1989-02-28 |
| 4781553 | Screw vacuum pump with lubricated bearings and a plurality of shaft sealing means | Ituro Nomura, Noboru Tsuboi | 1988-11-01 |
| 4695233 | Screw rotor mechanism | Kiyotada Miyoshi, Noboru Tsuboi, Kazuo Kubo, Shouji Yoshimura | 1987-09-22 |
| 4671750 | Screw rotor mechanism with specific tooth profile | Kiyotada Miyoshi, Noboru Tsuboi, Kazuo Kubo, Shouji Yoshimura | 1987-06-09 |