AM

Akihisa Maruyama

FI Fujifilm Business Innovation: 13 patents #720 of 5,238Top 15%
HI Hitachi: 1 patents #17,742 of 28,497Top 65%
Overall (All Time): #349,770 of 4,157,543Top 9%
14
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
9599928 Powder transport member, powder container, and image forming apparatus 2017-03-21
9465326 Image forming apparatus having a controller for controlling toner discharge operation Toshie Nakamoto 2016-10-11
9341987 Development roller, developing device, and image forming apparatus 2016-05-17
8995890 Developing device and image forming apparatus having magnetic poles to control the distribution of a magnetic attraction force Toshihiro Kanematsu 2015-03-31
8768225 Image forming apparatus having a developer holder with a concavo-convex outer surface Shota Oba, Takashi Ochi, Shigeru Inaba, Yoshitaka Nakajima, Toshihiro Kanematsu 2014-07-01
8676094 Developing device, visible image forming device, and image forming apparatus Yoshitaka Nakajima, Shigeru Inaba, Shota Oba, Takashi Ochi, Toshihiro Kanematsu 2014-03-18
7937035 Image forming apparatus including cleaning unit provided with cleaning member having free end facing upward and friction reducing unit, and image forming method 2011-05-03
7395022 Image forming apparatus with toner recovery system Koichiro Yuasa, Yasuhiro Oda, Miho Ikeda 2008-07-01
7251434 Color image forming apparatus Miho Ikeda, Yasuhiro Oda, Koichiro Yuasa 2007-07-31
7224930 Image forming apparatus Yasuhiro Oda, Miho Ikeda, Koichiro Yuasa 2007-05-29
6222606 Duplex imaging apparatus Takashi Fuchiwaki, Yasutomo Ishii, Katsuya Takenouchi, Keitaro Sonoguchi, Yasutaka Naito +6 more 2001-04-24
6173136 Fuser for two-sided imager Takashi Fuchiwaki, Yasutomo Ishii, Katsuya Takenouchi, Keitaro Sonoguchi, Yasutaka Naito +6 more 2001-01-09
5585901 Developing machine and carrier containing a charge-imparting agent Ryuji Watanabe, Katsuhiko Ichikawa 1996-12-17
4939681 Circuit simulation method for semiconductor device including field effect transistors Goichi Yokomizo, Akio Yajima, Toshiyuki Morioka, Hirofumi Johnishi 1990-07-03