Issued Patents All Time
Showing 26–46 of 46 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9699878 | Unignited plasma state discrimination device and unignited plasma state discrimination method | Satoshi Aikawa, Ryosuke Ohma | 2017-07-04 |
| 9621064 | Arc quenching circuit for a power supply in a plasma generator | Shinichi Kodama, Toshiyuki Adachi | 2017-04-11 |
| 9590565 | Class-D amplifier | Satoshi Aikawa, Ryosuke Ohma | 2017-03-07 |
| 9451687 | High-frequency power supply device, and plasma ignition method | Satoshi Aikawa, Ryosuke Ohma | 2016-09-20 |
| 9450519 | DC power source, and DC power source control method | Shinichi Kodama, Toshiyuki Adachi | 2016-09-20 |
| 9160240 | DC power supply device, and control method for DC power supply device | Toshiyuki Adachi, Shinichi Kodama | 2015-10-13 |
| 9137885 | DC power supply device, and control method for DC power supply device | Toshiyuki Adachi, Shinichi Kodama | 2015-09-15 |
| 9072159 | High-frequency power supply device and ignition voltage selection method | Satoshi Aikawa, Hiroshi Kunitama | 2015-06-30 |
| 9070537 | High-frequency power supply device and reflected wave power control method | Satoshi Aikawa, Hiroshi Kunitama | 2015-06-30 |
| 8797003 | Method for controlling power factor of three-phase converter, method for controlling reactive power of three-phase converter, and controller of three-phase converter | Atsushi Takayanagi, Yoshihisa Hata, Tsuyoshi Okano | 2014-08-05 |
| 8730700 | Current source inverter and method for controlling current source inverter | Toshiyuki Adachi, Shinichi Kodama | 2014-05-20 |
| 8704607 | Pulse modulated RF power control method and pulse modulated RF power supply device | Yoshihisa Hata | 2014-04-22 |
| 8385096 | Unbalanced voltage compensation method, unbalanced voltage compensator, three-phase converter control method, and controller of three-phase converter | Atsushi Takayanagi, Yoshihisa Hata | 2013-02-26 |
| 8169162 | Abnormal discharge suppressing device for vacuum apparatus | Atsushi Takayanagi | 2012-05-01 |
| 7751211 | Instantaneous voltage-drop compensation circuit, power conversion apparatus, instantaneous voltage-drop compensation method and computer readable medium storing instantaneous voltage-drop compensation program | Atsushi Takayanagi, Ryuichi Takamura | 2010-07-06 |
| 6777881 | Power supply apparatus for generating plasma | Masahiro Kikuchi, Toyoaki Suenaga, Yoichi Ishikawa | 2004-08-17 |
| 6760234 | DC power supply apparatus for a plasma generating apparatus | Masami Arai | 2004-07-06 |
| 6211749 | Impedance matching device | Satoru Matsukawa | 2001-04-03 |
| 5343377 | Method of controlling switching regulator | Juichi Tanaka, Takashi Watanabe | 1994-08-30 |
| 4621312 | Switching regulator | Masami Arai | 1986-11-04 |
| 4605865 | Input drive apparatus for power transistor | — | 1986-08-12 |