TY

Tomofumi Yamashita

Nsk: 10 patents #142 of 1,559Top 10%
Ricoh Company: 4 patents #4,167 of 9,818Top 45%
Overall (All Time): #350,062 of 4,157,543Top 9%
14
Patents All Time

Issued Patents All Time

Showing 1–14 of 14 patents

Patent #TitleCo-InventorsDate
9737926 Ball screw and manufacturing method of nut for ball screw Toru Harada, Koji Hashimoto, Tsuyoshi Ito, Naoya Aoki 2017-08-22
9685873 Power supply device, image forming device, and electronic appliance 2017-06-20
8950283 Method for manufacturing nut for ball screw and ball screw Atsushi Watanabe, Toru Harada, Shouji Yokoyama, Kiyoshi Ootsuka, Koji Hashimoto +4 more 2015-02-10
8809752 Booster circuit for enhanced induction heating unit, power-supply unit, and image forming apparatus using the same 2014-08-19
8656798 Linear actuator Hiroshi Kawahara, Tooru Harada 2014-02-25
8297142 Actuator Daisaku Kawada, Koji Hashimoto, Shingo Saito, Shinobu Mogi, Toru Harada +3 more 2012-10-30
8196486 Ball screw mechanism and assembling method of the same Toru Harada, Yoshinori Jingu, Shingo Saitou 2012-06-12
7986894 Power supply device, fixing device and image forming apparatus Hiroyuki Shinohara, Shoji Totsuka, Nobuyuki Shigeyama, Katsuaki Murata 2011-07-26
7638925 Power supply device 2009-12-29
7347115 Linear actuator Ryoichi Otaki 2008-03-25
7004882 Toroidal-type continuously variable transmission Takashi Imanishi, Masami Tanaka, Kouji Ishikawa, Nobuo Goto 2006-02-28
7004883 Toroidal-type continuously variable transmission Kouji Ishikawa, Yutaka Sato, Masami Tanaka, Nobuo Goto 2006-02-28
6902509 Toroidal type continuously variable transmission Hisashi Machida, Kouji Ishikawa, Takashi Imanishi, Hiroyuki Itoh 2005-06-07
6592491 Toroidal type continuously variable transmission Hisashi Machida, Kouji Ishikawa, Takashi Imanishi, Hiroyuki Itoh 2003-07-15