Issued Patents All Time
Showing 26–37 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5199858 | Oil injection type screw compressor | Masaki Matsukuma, Kazuo Kubo, Terumasa Kume, Tsuyoshi Niimura, Atsushi Ikeda | 1993-04-06 |
| 5044906 | Screw rotor for screw pump device having negative torque on the female rotor | — | 1991-09-03 |
| 5018947 | Screw type vacuum pump | — | 1991-05-28 |
| 4995797 | Rotary screw vacuum pump with pressure controlled valve for lubrication/sealing fluid | — | 1991-02-26 |
| 4957417 | Vertical oilless screw vacuum pump | — | 1990-09-18 |
| 4951638 | Screw type mechanical supercharger | Kazuo Kubo, Kunihiko Nishitani | 1990-08-28 |
| 4826412 | Mechanically driven screw supercharger | Kazuo Kubo, Itsuro Nomura, Kunihiko Nishitani | 1989-05-02 |
| 4812110 | Oil-free screw compressor with bypass of cooled discharged gas | Kazuo Kubo, Kunihiko Nishitani, Ituro Nomura | 1989-03-14 |
| 4808095 | Screw vacuum pump | Kunihiko Nishitani | 1989-02-28 |
| 4781553 | Screw vacuum pump with lubricated bearings and a plurality of shaft sealing means | Ituro Nomura, Kunihiko Nishitani | 1988-11-01 |
| 4695233 | Screw rotor mechanism | Kiyotada Miyoshi, Kunihiko Nishitani, Kazuo Kubo, Shouji Yoshimura | 1987-09-22 |
| 4671750 | Screw rotor mechanism with specific tooth profile | Kiyotada Miyoshi, Kunihiko Nishitani, Kazuo Kubo, Shouji Yoshimura | 1987-06-09 |