RY

Ryota Yamashina

Ricoh Company: 46 patents #272 of 9,818Top 3%
Overall (All Time): #62,550 of 4,157,543Top 2%
46
Patents All Time

Issued Patents All Time

Showing 26–46 of 46 patents

Patent #TitleCo-InventorsDate
9031439 Fixing device and image forming device Takamasa Hase, Kenji Ishii, Tadashi Ogawa, Teppei Kawata, Arinobu Yoshiura +12 more 2015-05-12
8977156 Fixing device and image forming apparatus including same Takeshi Yamamoto, Kazuhito Kishi, Takumi Waida, Masahiro Samei, Hiroshi Ono +3 more 2015-03-10
8965230 Fixing device Hiroshi Seo, Ippei Fujimoto, Takumi Waida 2015-02-24
8948641 Fixing device and control method used therein Ippei Fujimoto, Hiroshi Seo, Takumi Waida 2015-02-03
8886071 Fixing device, fixing device control method, and image forming apparatus Yasunori Ishigaya, Masahiro Samei, Takumi Waida 2014-11-11
8886070 Fixing device for locally heating a fixing member and image forming apparatus incorporating the fixing device 2014-11-11
8831448 Fixing device, image forming apparatus, and fixing condition control method 2014-09-09
8818225 Temperature control method of thermal fixing device, thermal fixing device, and image forming apparatus Masahiro Samei, Yasunori Ishigaya, Takumi Waida 2014-08-26
8805225 Fixing device and image forming apparatus Takumi Waida, Kazuya Saito 2014-08-12
8774666 Fixing device and image forming apparatus incorporating same Kazuya Saito, Takeshi Uchitani, Takamasa Hase, Shuutaroh Yuasa, Ippei Fujimoto +3 more 2014-07-08
8744330 Fixing device having a plurality of heat sources and a plurality of temperature detectors and image forming apparatus including same Hiroshi Yoshinaga, Akira Shinshi, Kenichi Hasegawa, Yasunori Ishigaya 2014-06-03
8699896 Failure predictor, fixing device, image forming apparatus, and failure prediction system Yasunori Ishigaya, Yasunari Mikutsu 2014-04-15
8682237 Fixing device and image forming apparatus including same Yasunori Ishigaya, Akira Shinshi, Kenichi Hasegawa, Hiroshi Yoshinaga 2014-03-25
8606135 Fixing device and image forming apparatus employing the fixing device Akira Shinshi, Kenichi Hasegawa, Hiroshi Yoshinaga, Yasunori Ishigaya 2013-12-10
8577230 Fixing device, fixing device control method, and image forming apparatus 2013-11-05
8559860 Fixing device and image forming apparatus including same Yasunori Ishigaya, Akira Shinshi, Kenichi Hasegawa, Hiroshi Yoshinaga 2013-10-15
8385756 Failure diagnosis device, failure diagnosis method, image forming device, and recording medium Yasushi Nakazato, Osamu Satoh, Kohji Ue, Mikiko Imazeki, Masahide Yamashita +1 more 2013-02-26
8275278 Fixing control device, fixing device, and image forming apparatus Yasunori Ishigaya 2012-09-25
8160484 Fixing device and image forming apparatus incorporating same Kenichi Hasegawa, Akira Shinshi, Hiroshi Yoshinaga, Yasunori Ishigaya 2012-04-17
8150289 Fixing device for an image forming apparatus Takeshi Yamamoto 2012-04-03
8064798 Fixing device and image forming apparatus with heating member heated uniformly in circumferential direction Akira Shinshi, Kenichi Hasegawa, Hiroshi Yoshinaga, Yasunori Ishigaya 2011-11-22