KN

Koichiro Nagata

HI Hitachi: 9 patents #4,653 of 28,497Top 20%
Sumitomo Electric Industries: 5 patents #5,365 of 21,551Top 25%
HC Hitachi Industrial Equipment Systems Co.: 4 patents #117 of 550Top 25%
ST Sandisk Technologies: 2 patents #967 of 2,224Top 45%
Overall (All Time): #218,367 of 4,157,543Top 6%
20
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
12174256 Device monitoring device and device monitoring method Akihiro Nakamura 2024-12-24
12055214 Transmission device monitoring system Akihiro Nakamura, Takuma NISHIMURA 2024-08-06
10937801 Three-dimensional memory device containing a polygonal lattice of support pillar structures and contact via structures and methods of manufacturing the same Yoshitaka Otsu, Junpei Kanazawa 2021-03-02
10871769 Manufacturing system and manufacturing method Akihiro Nakamura, Shuji Soga, Naohito Ikeda, Gen Tsuchida 2020-12-22
10615172 Three-dimensional memory device having double-width staircase regions and methods of manufacturing the same Junpei Kanazawa, Yoshitaka Otsu, Takaaki Iwai, Shuji Minagawa, Hisakazu Otoi 2020-04-07
9350284 Power conversion device Toshifumi Sakai, Yoshitaka Iwaji, Motomi Shimada 2016-05-24
8710781 Power conversion device and method for controlling thereof Yoichiro Arakawa, Yuusuke Arao, Shigehisa Aoyagi 2014-04-29
8115442 Electric motor drive system and electric motor control method Toshio Katayama 2012-02-14
7902790 Induction motor drive unit, motor drive system, and elevating system Yoichiro Arakawa, Hiroyuki Tomita 2011-03-08
7869232 Electric power converter suppressing output voltage variation due to input voltage fluctuation Toshiaki Okuyama, Shigetoshi Okamatsu, Koichi Miyazaki 2011-01-11
7671558 Induction motor controller Kouki Yamamoto, Toshiaki Okuyama, Hiroyuki Tomita, Yoshitaka Iwaji 2010-03-02
7545116 Driver for induction motor and method of driving the same Toshiaki Okuyama, Kouki Yamamoto, Hiroyuki Tomita 2009-06-09
7378984 Audio visual system Hidekazu Suzuki, Yutaka Nio, Masazumi Yamada 2008-05-27
7332888 Driving apparatus for a motor Toshiaki Okuyama, Haruo Nemoto, Toshio Katayama 2008-02-19
6646896 Controller of AC machine Yoshitoshi Akita, Toshiaki Okuyama, Shigetoshi Okamatsu 2003-11-11
6611125 Method for calculating inertia moment and driver for electric motor Toshiaki Okuyama, Hiroshi Fujii, Shigetoshi Okamatsu 2003-08-26
6519408 Playback control apparatus for controlling a playback unit and a receiver unit Takaaki Hoshi, Masashi Imai 2003-02-11
6392695 Image display device Toru Watamoto 2002-05-21
6028943 Audio amplifier system using a class D amplifier 2000-02-22
6008842 Protective circuit for the CRT and lens 1999-12-28