MT

Mizuna Tanaka

Ricoh Company: 40 patents #359 of 9,818Top 4%
Overall (All Time): #77,383 of 4,157,543Top 2%
40
Patents All Time

Issued Patents All Time

Showing 1–25 of 40 patents

Patent #TitleCo-InventorsDate
12208979 Feeding device and image forming apparatus incorporating same 2025-01-28
11046545 Sheet conveying device and image forming apparatus incorporating the sheet conveying device 2021-06-29
10520873 Image forming apparatus and image forming method Yuuya Ozaki, Kazutaka TAKEDA, Kohji Yoshimura, Takashi Oida 2019-12-31
10160613 Sheet feeder and image forming apparatus incorporating the sheet feeder Tomoya Tanaka, Toshikane Nishii, Ikuo Fujii, Hirofumi Horita 2018-12-25
9868601 Sheet feeder and image forming apparatus incorporating the sheet feeder Ikuo Fujii, Ippei Kimura, Hirofumi Horita, Tomoya Tanaka 2018-01-16
9630788 Paper output tray, paper output unit incorporating same, and image forming apparatus incorporating same Hirofumi Horita, Ippei Kimura, Yasuo Matsuyama, Ikuo Fujii 2017-04-25
9523955 Sheet feeder and image forming apparatus incorporating the sheet feeder Hirofumi Horita, Toshikane Nishii, Ikuo Fujii, Tomoya Tanaka 2016-12-20
9511962 Sheet feeding device and image forming apparatus Ippei Kimura, Ikuo Fujii, Hirofumi Horita, Tomoya Tanaka 2016-12-06
9487364 Sheet conveying device and image forming apparatus Ippei Kimura, Ikuo Fujii, Hirofumi Horita 2016-11-08
9346640 Sheet feeder and image forming apparatus Hirofumi Horita, Ikuo Fujii, Tomoya Tanaka, Toshikane Nishii, Masaki Narita +3 more 2016-05-24
9278823 Sheet feeding device and image forming apparatus incorporating same Ikuo Fujii, Ippei Kimura, Hirofumi Horita 2016-03-08
9244417 Image forming apparatus Yuuki Shiga, Kimihiro Tanaka, Toshikane Nishii, Akimitsu Obana 2016-01-26
9187280 Sheet feeding device, control method for the sheet feeding device, and image forming apparatus incorporating the sheet feeding device Toshikane Nishii, Hiroshi Fujiwara, Tomoyoshi Yamazaki, Haruyuki Honda 2015-11-17
9085426 Feeding device and image forming apparatus Ikuo Fujii, Yasuo Matsuyama, Ippei Kimura, Hirofumi Horita, Takamitsu Ikematsu +1 more 2015-07-21
8843050 Drive unit, image forming apparatus including same, and driving method therefor Tatsuo Fukushima, Kunihiko Nishioka 2014-09-23
8807552 Image forming apparatus, optional sheet feeder, and base plate member Kazuyoshi Kondo, Yasuo Matsuyama, Hiroshi Fujiwara, Yasuhide Ohkubo, Ippei Kimura +4 more 2014-08-19
8752824 Sheet inverting device and image forming apparatus incorporating same Hiroshi Fujiwara, Tomoyoshi Yamazaki, Haruyuki Honda, Toshikane Nishii 2014-06-17
8666297 Image forming apparatus which determines whether a sheet stacking unit is full Haruyuki Honda, Hiroshi Fujiwara, Tomoyoshi Yamazaki, Toshikane Nishii 2014-03-04
8641031 Sheet feeder and image forming apparatus including same Kunihiko Nishioka, Tatsuo Fukushima 2014-02-04
8561979 Open/close mechanism for paper tray for use in image forming apparatus Toshikane Nishii, Kazuhiro Wakamatsu, Yasuhide Ohkubo, Ippei Kimura, Haruyuki Honda +2 more 2013-10-22
8505913 Sheet transport mechanism and electrophotographic image forming apparatus incorporating same Toshikane Nishii, Hiroshi Fujiwara, Tomoyoshi Yamazaki, Haruyuki Honda, Kazuyoshi Kondo 2013-08-13
8465015 Image forming apparatus and control method therefor Hiroshi Fujiwara, Tomoyoshi Yamazaki, Haruyuki Honda, Toshikane Nishii 2013-06-18
8454011 Sheet feeder and image forming apparatus incorporating same Tatsuo Fukushima 2013-06-04
8413982 Conveyer and image forming apparatus including the same Haruyuki Honda, Hiroshi Fujiwara, Kazuyoshi Kondo, Toshikane Nishii, Tomoyoshi Yamazaki 2013-04-09
8417174 Sheet feeding device and image forming apparatus incorporating same Tomoyoshi Yamazaki, Haruyuki Honda, Hiroshi Fujiwara, Kazuyoshi Kondo, Toshikane Nishii 2013-04-09