YI

Yasunori Ishigaya

Ricoh Company: 59 patents #144 of 9,818Top 2%
Overall (All Time): #39,750 of 4,157,543Top 1%
59
Patents All Time

Issued Patents All Time

Showing 51–59 of 59 patents

Patent #TitleCo-InventorsDate
8606135 Fixing device and image forming apparatus employing the fixing device Ryota Yamashina, Akira Shinshi, Kenichi Hasegawa, Hiroshi Yoshinaga 2013-12-10
8571456 Fixing device and image forming apparatus incorporating same Masahiro Samei 2013-10-29
8559860 Fixing device and image forming apparatus including same Akira Shinshi, Kenichi Hasegawa, Hiroshi Yoshinaga, Ryota Yamashina 2013-10-15
8503905 Fixing device and image forming apparatus Akira Shinshi 2013-08-06
8275278 Fixing control device, fixing device, and image forming apparatus Ryota Yamashina 2012-09-25
8160484 Fixing device and image forming apparatus incorporating same Kenichi Hasegawa, Akira Shinshi, Hiroshi Yoshinaga, Ryota Yamashina 2012-04-17
8073352 Image forming apparatus, and method of controlling warming-up time of image forming apparatus Hiroyuki Kunii, Ippei Fijimoto, Hiroshi Yoshinaga, Toshiharu Hachisuka, Shinichi Namekata 2011-12-06
8064798 Fixing device and image forming apparatus with heating member heated uniformly in circumferential direction Akira Shinshi, Kenichi Hasegawa, Hiroshi Yoshinaga, Ryota Yamashina 2011-11-22
7912392 Image forming apparatus with glossy image printing mode Hiroshi Yoshinaga, Shinichi Namekata, Toshiharu Hachisuka, Hiroyuki Kunii, Ippei Fujimoto 2011-03-22