HN

Hideo Nagafuji

Ricoh Company: 16 patents #1,360 of 9,818Top 15%
Overall (All Time): #296,427 of 4,157,543Top 8%
16
Patents All Time

Issued Patents All Time

Showing 1–16 of 16 patents

Patent #TitleCo-InventorsDate
10007213 Fixing device, image forming apparatus, and slide member Yutaka Ikebuchi, Kohichi Utsunomiya, Arinobu Yoshiura, Motoyoshi Yamano 2018-06-26
9897950 Fixing device and image forming apparatus Arinobu Yoshiura, Kohichi Utsunomiya, Yutaka Ikebuchi, Motoyoshi Yamano 2018-02-20
9869952 Fixing device and image forming apparatus including a friction reducer including a lubricant Kohichi Utsunomiya, Arinobu Yoshiura, Yutaka Ikebuchi, Motoyoshi Yamano 2018-01-16
9817345 Fixing device, image forming apparatus, and method of controlling fixing device Motoyoshi Yamano, Tetsuo Tokuda, Yoshikuni Sasaki, Hiroshi Ono, Hironori Yamaoka +3 more 2017-11-14
9650219 Paper conveying device and image forming device Arinobu Yoshiura, Yuji Arai, Kohichi Utsunomiya, Kiho Sai, Shohei Saito +2 more 2017-05-16
9599940 Fixing device with nip forming member having a high thermal-conductive layer with a low thermal conductive portion Motoyoshi Yamano, Kohichi Utsunomiya, Hiromasa Takagi, Kenji Ishii, Takayuki Seki +6 more 2017-03-21
9494900 Fixing device and image forming apparatus including a nip-forming-member supported by at least two plates joined together Kohichi Utsunomiya, Yuji Arai, Arinobu Yoshiura, Qifeng Cui, Shohei Saito +2 more 2016-11-15
9477182 Fixing device of an image forming apparatus that utilizes edge detections for heat shield positional determinations Yutaka Ikebuchi, Yuji Arai, Kohichi Utsunomiya, Arinobu Yoshiura, Kiho Sai +2 more 2016-10-25
9429888 Fixing device and image forming apparatus which utilizes a nip supporting member to support a nip forming member Kohichi Utsunomiya, Yuji Arai, Arinobu Yoshiura, Kiho Sai, Shohei Saito +2 more 2016-08-30
9400464 Fixing device and image forming apparatus Kohichi Utsunomiya, Yuji Arai, Arinobu Yoshiura, Shohei Saito, Qifeng Cui +2 more 2016-07-26
9400482 Paper conveyance device, fixing device, and image forming apparatus Shohei Saito, Yuji Arai, Arinobu Yoshiura, Kohichi Utsunomiya, Qifeng Cui +9 more 2016-07-26
9354572 Fixing device and image forming apparatus Arinobu Yoshiura, Yuji Arai, Yutaka Ikebuchi, Kohichi Utsunomiya, Motoyoshi Yamano +2 more 2016-05-31
9298146 Fixing device and image forming apparatus Arinobu Yoshiura, Yuji Arai, Kohichi Utsunomiya, Shohei Saito, Qifeng Cui +5 more 2016-03-29
6969252 Heating device having resin layer over core metal of heating roller 2005-11-29
6701120 Heating device having a heating roller with a large diameter portion which supports bearings 2004-03-02
6516177 Fixing apparatus and image forming apparatus using the fixing apparatus 2003-02-04