HF

Hiroshi Fujiwara

Ricoh Company: 38 patents #399 of 9,818Top 5%
PA Panasonic: 19 patents #1,080 of 21,108Top 6%
OC Olympus Optical Co.: 16 patents #155 of 2,334Top 7%
Kubota: 6 patents #338 of 2,059Top 20%
KA Kaneka: 5 patents #246 of 1,525Top 20%
MC Maruzen Oil Co.: 4 patents #1 of 32Top 4%
Sumitomo Electric Industries: 3 patents #7,735 of 21,551Top 40%
KE Kokusai Electric: 3 patents #177 of 583Top 35%
HI Hitachi: 3 patents #10,712 of 28,497Top 40%
TO Toyota: 3 patents #8,352 of 26,838Top 35%
MC Maruzen Petrochemical Co.: 2 patents #56 of 174Top 35%
RT Renesas Technology: 1 patents #1,991 of 3,337Top 60%
TL Tokyo Electron Limited: 1 patents #3,538 of 5,567Top 65%
TC Toyo Advanced Technologies Co.: 1 patents #21 of 40Top 55%
Mitsubishi Electric: 1 patents #15,491 of 25,717Top 65%
DA Daihen: 1 patents #169 of 305Top 60%
Fujitsu Limited: 1 patents #14,843 of 24,456Top 65%
HC Hitachi Automotive Engineering Co.: 1 patents #156 of 314Top 50%
JC J.S.T. Mfg. Co.: 1 patents #144 of 255Top 60%
KU Kyoto University: 1 patents #568 of 1,688Top 35%
BR Bell Communications Research: 1 patents #278 of 628Top 45%
MC Mitsubishi Rayon Engineering Co.: 1 patents #25 of 48Top 55%
NU National University Corporation Ehime University: 1 patents #37 of 160Top 25%
NS Nec Soft: 1 patents #14 of 38Top 40%
NI Nec Solution Innovators: 1 patents #69 of 178Top 40%
Overall (All Time): #10,641 of 4,157,543Top 1%
116
Patents All Time

Issued Patents All Time

Showing 26–50 of 116 patents

Patent #TitleCo-InventorsDate
10236620 Connector having a connector housing with a holding portion for holding a sealing ring Hironori Kono, Ryuji Kawaguchi, Seiji Yabuki 2019-03-19
10197986 Control apparatus of an electric motor Toru Tazawa, Masaru Nishizono 2019-02-05
10007249 Control apparatus of an electric motor Toru Tazawa, Masaru Nishizono 2018-06-26
9975433 Electric vehicle controller Yuri Yamamoto, Yu Hirayama 2018-05-22
9525378 Motor control device 2016-12-20
9423786 Motor drive device Yu Imada, Kenichi Suzuki, Masaru Nishizono 2016-08-23
9423782 Motor drive device Yu Imada, Kenichi Suzuki, Masaru Nishizono 2016-08-23
9366996 Sealing structure, developing device, cleaning device, process unit, and image forming apparatus Akinori Harada, Tomohiro Kubota 2016-06-14
9187280 Sheet feeding device, control method for the sheet feeding device, and image forming apparatus incorporating the sheet feeding device Toshikane Nishii, Tomoyoshi Yamazaki, Haruyuki Honda, Mizuna Tanaka 2015-11-17
9179842 Optical tomography device Haruo Nakaji, Hidenao Fukuyama, Yuusuke Iso, Shinichi Urayama, Naoya Oishi 2015-11-10
8975849 Motor control apparatus Toru Tazawa 2015-03-10
8907955 Vector image drawing device, vector image drawing method, and recording medium 2014-12-09
8901872 Motor controller Toru Tazawa, Masaru Nishizono 2014-12-02
8807552 Image forming apparatus, optional sheet feeder, and base plate member Kazuyoshi Kondo, Yasuo Matsuyama, Yasuhide Ohkubo, Ippei Kimura, Toshikane Nishii +4 more 2014-08-19
8752824 Sheet inverting device and image forming apparatus incorporating same Tomoyoshi Yamazaki, Haruyuki Honda, Toshikane Nishii, Mizuna Tanaka 2014-06-17
8666297 Image forming apparatus which determines whether a sheet stacking unit is full Haruyuki Honda, Tomoyoshi Yamazaki, Toshikane Nishii, Mizuna Tanaka 2014-03-04
8561979 Open/close mechanism for paper tray for use in image forming apparatus Toshikane Nishii, Kazuhiro Wakamatsu, Yasuhide Ohkubo, Ippei Kimura, Mizuna Tanaka +2 more 2013-10-22
8505913 Sheet transport mechanism and electrophotographic image forming apparatus incorporating same Toshikane Nishii, Tomoyoshi Yamazaki, Haruyuki Honda, Kazuyoshi Kondo, Mizuna Tanaka 2013-08-13
8465015 Image forming apparatus and control method therefor Tomoyoshi Yamazaki, Haruyuki Honda, Toshikane Nishii, Mizuna Tanaka 2013-06-18
8417174 Sheet feeding device and image forming apparatus incorporating same Tomoyoshi Yamazaki, Haruyuki Honda, Kazuyoshi Kondo, Toshikane Nishii, Mizuna Tanaka 2013-04-09
8413982 Conveyer and image forming apparatus including the same Haruyuki Honda, Kazuyoshi Kondo, Toshikane Nishii, Mizuna Tanaka, Tomoyoshi Yamazaki 2013-04-09
8378615 Motor controller Toru Tazawa, Masaru Nishizono 2013-02-19
8340564 Sheet thickness detector and image forming apparatus using same Kazuyoshi Kondo, Toshikane Nishii, Mizuna Tanaka, Tomoyoshi Yamazaki, Haruyuki Honda 2012-12-25
8322718 Recording medium conveyer capable of effectively conveying recording medium of various types Mizuna Tanaka, Tomoyoshi Yamazaki, Toshikane Nishii, Kazuyoshi Kondo, Haruyuki Honda 2012-12-04
8320798 Sheet conveying device and image forming apparatus Shigeo Nanno, Yasuhide Ohkubo, Ippei Kimura, Yoshihide Ohta, Tomoyoshi Yamazaki +1 more 2012-11-27