Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8109744 | Turbo vacuum pump | Hiroyuki Kawasaki, Hiroshi Sobukawa | 2012-02-07 |
| 8066495 | Turbo vacuum pump and semiconductor manufacturing apparatus having the same | Shinichi Sekiguchi, Hiroyasu Kawashima | 2011-11-29 |
| 7717684 | Turbo vacuum pump and semiconductor manufacturing apparatus having the same | Shinichi Sekiguchi, Hiroyasu Kawashima | 2010-05-18 |
| 7360454 | Flowmeter having a float and a displacement sensor | Hiroyasu Kawashima, Katsuaki Usui, Toshiharu Nakazawa | 2008-04-22 |
| 6926493 | Turbo-molecular pump | Matsutaro Miyamoto, Tetsuma Ikegami, Hiroyuki Kawasaki | 2005-08-09 |
| 6761542 | Multishaft electric motor and positive-displacement pump combined with such multishaft electric motor | Yoshinori Ojima, Kozo Matake, Genichi Sato, Yasushi Hisabe, Masami Nagayama +1 more | 2004-07-13 |
| 6589009 | Turbo-molecular pump | Atsushi Shiokawa, Matsutaro Miyamoto, Hiroyuki Kawasaki, Hiroshi Sobukawa | 2003-07-08 |
| 6447271 | Multishaft electric motor and positive-displacement pump combined with such multishaft electric motor | Yoshinori Ojima, Kozo Matake, Genichi Sato, Yasushi Hisabe, Masami Nagayama +1 more | 2002-09-10 |
| 6332925 | Evacuation system | Nobuharu Noji, Yasuhiro Niimura, Hiroshi Hattori, Norihiko Nomura, Tetsuro Sugiura +1 more | 2001-12-25 |
| 6183218 | Multishaft electric motor and positive-displacement pump combined with such multishaft electric motor | Yoshinori Ojima, Kozo Matake, Genichi Sato, Yasushi Hisabe, Masami Nagayama +1 more | 2001-02-06 |
| 5816782 | Multistage positive-displacement vacuum pump | Masami Nagayama, Katsuaki Usui | 1998-10-06 |
| 5814913 | Multishaft electric motor and positive-displacement pump combined with such multishaft electric motor | Yoshinori Ojima, Kozo Matake, Genichi Sato, Yasushi Hisabe, Masami Nagayama +1 more | 1998-09-29 |