EK

Eiji Kumagai

SO Sony: 26 patents #1,436 of 25,231Top 6%
MC Murata Manufacturing Co.: 5 patents #1,480 of 5,295Top 30%
CP Chugai Pharmaceutical: 1 patents #730 of 1,238Top 60%
Fujitsu Limited: 1 patents #14,843 of 24,456Top 65%
TK Toyo Boseki Kabushiki Kaisha: 1 patents #541 of 1,085Top 50%
TC Toyobo Co.: 1 patents #227 of 498Top 50%
Overall (All Time): #96,985 of 4,157,543Top 3%
35
Patents All Time

Issued Patents All Time

Showing 1–25 of 35 patents

Patent #TitleCo-InventorsDate
12421363 White easy-adhesive polyester film comprising a nitrogen-containing antistatic agent Takeshi Kubo 2025-09-23
10587127 Charging device, charging control method, electricity storage device, power storage device, power system, and electric vehicle Naoyuki Sugeno, Hisato Asai, Noritoshi Imamura, Koji Umetsu 2020-03-10
10008862 Power storage device, power storage system, and control method of power storage device Shuichi Takizawa, Naoyuki Sugeno, Koji Umetsu, Bunya Sato, Aniket Khade +4 more 2018-06-26
9991702 Control device to boot up power source 2018-06-05
9966759 Battery monitor circuit, storage apparatus, electronic apparatus, electric-powered vehicle, and power system Akira Sampei, Kazuharu Yanagihara 2018-05-08
9929559 Electricity storage device, electricity storage system, and method for controlling electricity storage device Raghunath Bellala 2018-03-27
9698449 Storage system and output controller 2017-07-04
9608464 Control device, electric storage system, electronic device, electric vehicle, and electric power system to boot up a power source 2017-03-28
9608451 Electric power supplying apparatus, electric power supplying method, inverter, and electric vehicle Naoyuki Sugeno, Noritoshi Imamura, Koji Umetsu, Atsushi Minami, Masayuki Yasuda 2017-03-28
9419458 Storage system, electronic device, electric vehicle and power system 2016-08-16
9270135 Power supply apparatus and power supply switching method 2016-02-23
9178366 Battery monitor circuit, storage apparatus, electronic apparatus, electric-powered vehicle, and power system Akira Sampei, Kazuharu Yanagihara 2015-11-03
9034511 Power storage apparatus, connection apparatus, power storage system, electronic device, motor-driven vehicle, and electric power system Tatsuya Adachi 2015-05-19
9018911 Electric circuit, charge control device, charge system, and control method 2015-04-28
8907624 Multi-battery pack battery system with direct communication between controller and the battery packs Morihiko Sato 2014-12-09
7797067 Production management program, production management method, and production management system 2010-09-14
7544414 Oriented syndiotactic polystyrene-base film Masayuki Tsutsumi, Hisato Kobayashi, Keizo Kawahara, Shigeto Yoshida, Shinsuke Yamaguchi +6 more 2009-06-09
7379406 Optical recording apparatus, and method for controlling laser power therein by filtering and then sampling a returned light signal Kenji Nagashima, Satoshi Kumai, Toshio Morizumi 2008-05-27
7274631 Optical-disc driving apparatus, optical-disc driving method, storage medium, and program 2007-09-25
6819642 Data recording device, data reproducing device, and optical disc Satoshi Kumai, Tetsuji Kawashima, Kenji Nagashima, Toshio Morizumi 2004-11-16
6757227 Optical drive apparatus for use with different recording media, tracking control method for use therein, and optical disc Kenji Nagashima, Toshio Morizumi 2004-06-29
6714509 Disk recording medium and disk drive apparatus Yukio Shishido, Michihiko Iida 2004-03-30
6594210 Disc drive apparatus and method for generating wobble information 2003-07-15
6288987 Optical disc device and optical disc discriminating method 2001-09-11
6288988 Optical disc device and optical disc discriminating method 2001-09-11