Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6186755 | Scroll fluid machine having a heat pipe inside the drive shaft | — | 2001-02-13 |
| 6149405 | Double wrap dry scroll vacuum pump having a compressed gas cooling passage disposed in the scroll shaft | Tetsuya Abe, Seiji Hiroki | 2000-11-21 |
| 6109897 | Scroll fluid machine having a cooling passage inside the drive shaft | — | 2000-08-29 |
| 5961297 | Oil-free two stage scroll vacuum pump and method for controlling the same pump | Masaru Tsuchiya | 1999-10-05 |
| 5842843 | Scroll fluid machine having a cooling passage inside the drive shaft | — | 1998-12-01 |
| 5743719 | Oil-free scroll vacuum pump having a gas ballast part | Masaru Tsuchiya | 1998-04-28 |
| 5258046 | Scroll-type fluid machinery with seals for the discharge port and wraps | Masatomo Tanuma, Takashi Serita | 1993-11-02 |
| 5145344 | Scroll-type fluid machinery with offset passage to the exhaust port | Masatomo Tanuma | 1992-09-08 |