SO

Shinki Ohtsu

HC Hitachi Koki Co.: 39 patents #9 of 888Top 2%
HC Hitachi Koko Co.: 1 patents #1 of 33Top 4%
📍 Ibaraki, JP: #110 of 6,779 inventorsTop 2%
Overall (All Time): #79,913 of 4,157,543Top 2%
40
Patents All Time

Issued Patents All Time

Showing 1–25 of 40 patents

Patent #TitleCo-InventorsDate
8925645 Oil pulse tool Tetsuhiro Harada, Tomomasa Nishikawa, Kazutaka Iwata, Nobuhiro Takano 2015-01-06
8926024 Motorized cutter, motorized cutter with wheels, and cutting method Yukihiro Shima, Kenji Niwa, Junichi Kamimura, Mitsuhiro Sunaoshi 2015-01-06
8672049 Vibration drill unit Junichi Tokairin, Kenji Kataoka, Yukio Terunuma, Hideki Watanabe, Shigeru Ishikawa 2014-03-18
8499730 Two cycle engine and two cycle engine tool Toshinori Yasutomi, Junichi Kamimura, Shigetoshi Ishida 2013-08-06
8439005 Two cycle engine and tool Toshinori Yasutomi, Junichi Kamimura 2013-05-14
8371034 Dust collection cover attachable to cutter Tomomasa Nishikawa 2013-02-12
8205777 Fuel, gas, combustion type power tool driven by the fuel gas, and compressed gas container for the combustion type power tool Tomomasa Nishikawa, Yasuki Ohmori, Kunio Yamamoto 2012-06-26
7883456 Centrifugal machine having a vibration preventing mechanism Shoji Kusumoto 2011-02-08
7789281 Electrically driven flywheel-fastener driver Hideyuki Tanimoto, Chikai Yoshimizu, Hiroyuki Oda, Toshihito Sakaba, Takashi Ueda +1 more 2010-09-07
7766096 Electrical power tool Shinichirou Satou, Tsukasa Suzuura 2010-08-03
7721818 Power tool having a vibration isolating handle Hiroto Inagawa, Kenji Kobori, Tetsuo Ebata 2010-05-25
7658238 Impact drill Jyunichi Toukairin, Kenji Kataoka, Kazuhide Ohzeki, Takuma Saito, Shigeru Ishikawa +1 more 2010-02-09
7500587 Combustion-type power tool Yoshitaka Akiba, Tomomasa Nishikawa, Kunio Yamamoto, Haruhisa Fujisawa 2009-03-10
7455121 Power tool Takuma Saito, Yasuki Ohmori, Chikai Yoshimizu, Katsuhiro Oomori, Masanori Watanabe 2008-11-25
7416031 Impact tool Takuhiro Murakami, Junichi Kamimura, Katsuhiro Oomori, Hiroto Inagawa 2008-08-26
7323796 Motor-driven tool Katsuhiro Oomori, Chikai Yoshimizu, Masanori Watanabe, Toshiyuki Nemoto, Takuma Saito 2008-01-29
7305940 Combustion-type power tool having ignition proof arrangement Tomomasa Nishikawa, Yasuki Ohmori, Kunio Yamamoto, Yoshitaka Akiba, Haruhisa Fujisawa 2007-12-11
7293541 Combustion-type power tool having ignition proof arrangement Tomomasa Nishikawa, Haruhisa Fujisawa 2007-11-13
7261071 Combustion type power tool facilitating cleaning to internal cleaning target Yasuki Ohmori 2007-08-28
7216723 Pulse torque generator and power tool having the same Chikai Yoshimizu 2007-05-15
7213659 Impact drill Takuma Saito, Hideki Watanabe, Junichi Toukairin 2007-05-08
7194988 Combustion-type power tool Yasuki Ohmori 2007-03-27
7171997 Portable electric router having radial fan Tomomasa Nishikawa, Akira Onose 2007-02-06
7121442 Combustion-type power tool Yoshitaka Akiba, Tomomasa Nishikawa, Kunio Yamamoto, Haruhisa Fujisawa 2006-10-17
7093670 Impact drill Takuma Saito, Jyunichi Toukairin, Kenji Kataoka, Kazuhide Ohzeki, Shigeru Ishikawa +1 more 2006-08-22