Issued Patents All Time
Showing 25 most recent of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10968974 | Damper | Etsunori Fujita, Yumi Ogura, Ryuji Kuwano, Jun Fukuda | 2021-04-06 |
| 10167199 | Method for manufacturing highly pure silicon, highly pure silicon obtained by this method, and silicon raw material for manufacturing highly pure silicon | Shinji Tokumaru, Masataka Hiyoshi, Hitoshi Dohnomae, Yutaka Kishida, Shigeru Nakazawa +1 more | 2019-01-01 |
| 9624948 | Electromagnetic valve | Masahiko Ochiai | 2017-04-18 |
| 9349515 | Linear solenoid | — | 2016-05-24 |
| 9263931 | Linear solenoid and manufacturing method of the same | — | 2016-02-16 |
| 9086169 | Electromagnetic spool valve | — | 2015-07-21 |
| 8882079 | Electromagnetic actuator | Yoshiyuki Murao, Koichiro Matsumoto | 2014-11-11 |
| 8456262 | Electromagnetic solenoid | — | 2013-06-04 |
| 8034151 | Method for removing boron from silicon | Kensuke Okazawa | 2011-10-11 |
| 8006718 | Electric spool valve | Yasuhiro Hamaoka | 2011-08-30 |
| 7614603 | Solenoid valve | Yasuhiro Shimura, Mitomu Mohri | 2009-11-10 |
| 7472883 | Electromagnetic actuator | Yoshiyuki Murao | 2009-01-06 |
| 7455822 | Method for production of silicon | Masaki Okajima, Shinji Tokumaru, Hitoshi Dohnomae | 2008-11-25 |
| 7150447 | Electromagnetic driving apparatus and electromagnetic valve | — | 2006-12-19 |
| 7131410 | Solenoid spool valve | Takashi Yamaguchi | 2006-11-07 |
| 7114472 | Electromagnetic valve | — | 2006-10-03 |
| 7014168 | Solenoid actuator having misalignment accommodating structure and solenoid valve using the same | Yasuhiro Shimura | 2006-03-21 |
| 6968816 | Oil flow control valve | Eiji Isobe | 2005-11-29 |
| 6804953 | Air-fuel ratio control system for multi-cylinder engine | — | 2004-10-19 |
| 6622695 | Intake control system of internal combustion engine | — | 2003-09-23 |
| 6595184 | Intake control system of multi-cylinder engine | — | 2003-07-22 |
| 6395249 | Production process and apparatus for high purity silicon | Haruo Shimada, Shinji Tokumaru, Ryuji Watanabe, Atsushi Nogami, Akihito Kiyose | 2002-05-28 |
| 6287852 | Photosynthetic culture apparatus and group of photosynthesis culture apparatuses | Yoshihisa Nakano, Kazutaka Miyatake, Nobuo Honami, Kenji Kanai, Masahiko Tatsumi | 2001-09-11 |
| 6215207 | Torque motor having uniform torque output characteristics | Tomokazu Kondo, Yuichiro Miura, Hideki Kawamura | 2001-04-10 |
| 6005319 | Torque motor having uniform torque output characteristic | — | 1999-12-21 |