TO

Takefumi Okumura

HI Hitachi: 12 patents #3,472 of 28,497Top 15%
HE Hitachi Vehicle Energy: 3 patents #24 of 95Top 30%
HC Hitachi Chemical Company: 2 patents #701 of 1,946Top 40%
NO Nof: 1 patents #246 of 561Top 45%
Overall (All Time): #276,359 of 4,157,543Top 7%
17
Patents All Time

Issued Patents All Time

Showing 1–17 of 17 patents

Patent #TitleCo-InventorsDate
9406929 Lithium ion battery Takayuki Kimura, Hiroo Nishiyama 2016-08-02
9306214 Lithium ion battery Hiroo Nishiyama, Takayuki Kimura 2016-04-05
9118087 Electrode for lithium secondary battery Toshio Abe 2015-08-25
8828584 Lithium-ion rechargeable battery module, vehicle with the battery module and generating system with the battery module Akira Gunji, Shin Takahashi, Hiroshi Iwasawa, Shin Yamauchi 2014-09-09
8742728 System for controlling charging and discharging of lithium ion battery Hironori Sasaki, Tsunenori Yamamoto 2014-06-03
8642217 Lithium secondary battery Ryo Inoue 2014-02-04
8581555 Secondary battery system including an arrangement to determine a temporary increase in direct current resistance of the secondary battery Tsunenori Yamamoto, Hironori Sasaki 2013-11-12
8541118 Lithium-ion battery and method for regenerating the same Ryo Inoue, Toshio Abe 2013-09-24
8409757 Lithium secondary battery Shigetaka TSUBOUCHI, Ryo Inoue 2013-04-02
8263269 Lithium secondary battery Takahiro Yamaki, Masanori Yoshikawa, Yoshimi Yanai, Toyotaka Yuasa 2012-09-11
7923580 Polymerizable boric compounds, methods of producing the same, polymerizable compositions and ionic-conductive polymeric electrolytes Norio Iwayasu, Shin Nishimura, Tetsuya Itoh, Takeshi Yabe 2011-04-12
7862933 Lithium secondary battery Takahiro Yamaki, Masanori Yoshikawa, Yoshimi Yanai, Toyotaka Yuasa 2011-01-04
7759003 Polymerizable boric compounds, methods of producing the same, polymerizable compositions and ionic-conductive polymeric electrolytes Norio Iwayasu, Shin Nishimura, Tetsuya Itoh, Takeshi Yabe 2010-07-20
7704642 Cationic conductor, its intermediate, and lithium secondary battery using the conductor Shin Nishimura, Akira Satou, Makoto Morishima, Hitoshi Yamamoto, Norikazu Ueyama 2010-04-27
7473492 Lithium secondary battery Shin Nishimura, Norio Iwayasu, Shoichi Yokoyama, Takeshi Yabe 2009-01-06
7300991 Cationic conductor, its intermediate, and lithium secondary battery using the conductor Shin Nishimura, Akira Satou, Makoto Morishima, Hitoshi Yamamoto, Norikazu Ueyama 2007-11-27
7230057 Boron-containing compound, ion-conductive polymer and polyelectrolyte for electrochemical devices Shin Nishimura, Norio Iwayasu, Shoichi Yokoyama, Takeshi Yabe 2007-06-12