Issued Patents All Time
Showing 25 most recent of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10253889 | Gate valve | Hiromi Shimoda, Takashi Nagao | 2019-04-09 |
| 9599233 | Gate valve | Hiromi Shimoda, Takashi Nagao | 2017-03-21 |
| 9482350 | Radical-resistant gate valve | Hiromi Shimoda, Hiroshi Ogawa | 2016-11-01 |
| 9404589 | Non-sliding gate valve | Hiromi Shimoda, Hiroshi Ogawa | 2016-08-02 |
| 8800956 | Non-sliding gate valve | Hiromi Shimoda, Hiroshi Ogawa | 2014-08-12 |
| 8534311 | Vacuum valve | Hiroshi Ogawa, Hiromi Shimoda | 2013-09-17 |
| 7896313 | Linear motion-type gate valve | — | 2011-03-01 |
| 7841578 | Vacuum valve | — | 2010-11-30 |
| 7234679 | Gate valve | — | 2007-06-26 |
| 7066443 | Gate valve | — | 2006-06-27 |
| 6932111 | Gate valve apparatus | — | 2005-08-23 |
| 6619618 | Gate valve | Seiichi Furutate, Kenji Waragai | 2003-09-16 |
| 6523833 | Low load seal | Mamoru Fukuda, Yasuyuki Nishimura, Kazumasa Nishida | 2003-02-25 |
| 6478043 | Opening/closing valve | — | 2002-11-12 |
| 6464203 | Swing-door gate valve | Ikuo Kanzaka, Kenji Waragai | 2002-10-15 |
| 6433308 | High vacuum valve | Keiichi Shibuya, Mamoru Fukuda, Kenji Waragai | 2002-08-13 |
| 6390449 | Gate valve | Kenji Waragai, Ikuo Kanzaka | 2002-05-21 |
| 6299133 | Gate valve | Kenji Waragai | 2001-10-09 |
| 6095180 | High-vacuum valve | Kenji Waragai | 2000-08-01 |
| 6095193 | Smooth vent valve | Ikuo Kanzaka | 2000-08-01 |
| 5927334 | Three-port valve | — | 1999-07-27 |
| 5848608 | Vacuum-pressure-control slow exhaust valve | — | 1998-12-15 |
| 5836568 | High-vacuum valve | Keiichi Shibuya | 1998-11-17 |
| 5145152 | High-vacuum valves | Hiroshi Komuro | 1992-09-08 |
| 5072592 | Gas cleaner | — | 1991-12-17 |