AN

Atsuhiko Nakamura

HC Hitachi Industrial Equipment Systems Co.: 7 patents #61 of 550Top 15%
HI Hitachi: 3 patents #10,712 of 28,497Top 40%
SE Sega Enterprises: 2 patents #136 of 515Top 30%
📍 Funabashi, JP: #141 of 1,104 inventorsTop 15%
Overall (All Time): #486,933 of 4,157,543Top 15%
10
Patents All Time

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDate
12061236 Power conversion device, rotating machine system, and diagnosis method Kohji Maki, Yoshitaka Iwaji, Hironori Ohashi 2024-08-13
11870384 Speed calculation device and power conversion device Hiroshi Watanabe, Masataka Sasaki, Masahiro Hiraga, Yusuke Arao, Hiroyuki Tomita +2 more 2024-01-09
11575338 Power conversion device Kazuaki Tobari, Agnes HADINATA, Hiroshi Watanabe, Yusaku Onuma, Takuya Sugimoto +1 more 2023-02-07
11437944 Power conversion device Kazuaki Tobari, Yoshitaka Iwaji, Agnes HADINATA, Yusaku Onuma, Takuya Sugimoto +2 more 2022-09-06
11424707 Power conversion apparatus Kazuaki Tobari, Yoshitaka Iwaji, Agnes HADINATA, Yusaku Onuma, Takuya Sugimoto 2022-08-23
7920395 Pulse width modulation method for a power converter Seiji Ishida 2011-04-05
7433403 Pulse width modulation method for a power converter Seiji Ishida 2008-10-07
6007423 Virtual course display method and game machine using the same 1999-12-28
5816913 Method and apparatus for measuring virtual time difference or virtual distance between mobile bodies, and storage medium storing programs for causing a computer to execute the method 1998-10-06
5175483 Method and an apparatus for computing moment of inertia in a motor speed controller, and a speed control method and apparatus for a motor Hiroshi Fujii, Takatsugu Kambara, Satoshi Ibori 1992-12-29