RS

Ryouhei Saga

HI Hitachi: 9 patents #4,653 of 28,497Top 20%
HC Hitachi Computer Peripherals Co.: 4 patents #15 of 133Top 15%
HS Hitachi Tohbu Semiconductor: 3 patents #58 of 223Top 30%
HM Hitachi Maxell: 2 patents #441 of 1,211Top 40%
Overall (All Time): #584,137 of 4,157,543Top 15%
9
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
7157810 Backup power supply Akihiko Kanouda, Satoru Masuyama, Masato Isogai, Kenichi Onda, Norikazu Tokunaga 2007-01-02
6977448 Backup power supply Akihiko Kanouda, Satoru Masuyama, Masato Isogai, Kenichi Onda, Norikazu Tokunaga 2005-12-20
6643152 DC power supply device Norikazu Tokunaga, Kenichi Onda, Takeshi Onaka, Satoru Masuyama, Katsunori Hayashi 2003-11-04
6603671 Synchronized rectifier voltage step down DC-DC converter and control circuit therefor Norikazu Tokunaga, Kenichi Onda, Takeshi Onaka, Akihiko Kanouda 2003-08-05
6580597 Voltage regulator module for micro processor and CPO using a super capacitor Akihiko Kanouda, Kenichi Onda, Norikazu Tokunaga, Mikiya Nohara, Morinobu Endo 2003-06-17
6567261 DC-DC step-down converter with super capacitor Akihiko Kanouda, Kenichi Onda, Norikazu Tokunaga, Mikiya Nohara, Morinobu Endo 2003-05-20
6507507 DC power supply device Norikazu Tokunaga, Kenichi Onda, Takeshi Onaka, Satoru Masuyama, Katsunori Hayashi 2003-01-14
6489756 DC-DC converter with switchable control mode Akihiko Kanouda, Kenichi Onda, Norikazu Tokunaga 2002-12-03
6381152 Method of driving semiconductor switching device in non-saturated state and power supply apparatus containing such a switching device Tadashi Takahashi, Kenichi Onda, Norikazu Tokunaga, Takeshi Onaka, Katsunori Hayashi 2002-04-30