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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 26–40 of 40 patents

Patent #TitleCo-InventorsDate
8340564 Sheet thickness detector and image forming apparatus using same Kazuyoshi Kondo, Hiroshi Fujiwara, Toshikane Nishii, Tomoyoshi Yamazaki, Haruyuki Honda 2012-12-25
8322718 Recording medium conveyer capable of effectively conveying recording medium of various types Hiroshi Fujiwara, Tomoyoshi Yamazaki, Toshikane Nishii, Kazuyoshi Kondo, Haruyuki Honda 2012-12-04
8256769 Feeding device and image forming apparatus Masafumi Takahira, Hiroshi Fujiwara, Shigeo Nanno, Yasuhide Ohkubo, Ippei Kimura +3 more 2012-09-04
8260187 Image forming device Haruyuki Honda, Yasuo Matsuyama, Hiroshi Fujiwara, Kazuyoshi Kondo, Yasuhide Ohkubo +4 more 2012-09-04
8240657 Sheet feeding device and image forming apparatus Hiroshi Fujiwara, Yasuo Matsuyama, Kazuyoshi Kondo, Toshikane Nishii, Ippei Kimura +5 more 2012-08-14
8118296 Open/close mechanism for paper tray for use in image forming apparatus Toshikane Nishii, Kazuhiro Wakamatsu, Yasuhide Ohkubo, Ippei Kimura, Haruyuki Honda +2 more 2012-02-21
8087666 Sheet discharge device and image forming apparatus Haruyuki Honda, Hiroshi Fujiwara, Kazuyoshi Kondo, Toshikane Nishii, Tomoyoshi Yamazaki 2012-01-03
8070159 Switchback mechanism and image forming apparatus Haruyuki Honda, Hiroshi Fujiwara, Yasuhide Ohkubo, Ippei Kimura, Toshikane Nishii +3 more 2011-12-06
7992860 Sheet feeding device, image forming apparatus, and sheet feeding method Ippei Kimura, Yasuo Matsuyama, Hiroshi Fujiwara, Yasuhide Ohkubo, Toshikane Nishii +3 more 2011-08-09
7963520 Sheet loading device, sheet conveying device, and image forming apparatus Hiroshi Fujiwara, Shigeo Nanno, Tomoyoshi Yamazaki, Yasuhide Ohkubo, Haruyuki Honda +3 more 2011-06-21
7954814 Feeding device and image forming apparatus Masafumi Takahira, Hiroshi Fujiwara, Shigeo Nanno, Yasuhide Ohkubo, Ippei Kimura +3 more 2011-06-07
7918451 Switchback mechanism and image forming apparatus Haruyuki Honda, Hiroshi Fujiwara, Yasuhide Ohkubo, Ippei Kimura, Toshikane Nishii +3 more 2011-04-05
7900917 Recording medium conveyer capable of effectively conveying recording medium of various types Hiroshi Fujiwara, Tomoyoshi Yamazaki, Toshikane Nishii, Kazuyoshi Kondo, Haruyuki Honda 2011-03-08
7731170 Open/close mechanism for paper tray for use in image forming apparatus Toshikane Nishii, Kazuhiro Wakamatsu, Yasuhide Ohkubo, Ippei Kimura, Haruyuki Honda +2 more 2010-06-08
7677555 Sheet conveying apparatus and image forming apparatus with vibration applying unit Yasuo Matsuyama, Hiroshi Fujiwara, Tomoyoshi Yamazaki, Toshikane Nishii, Kazuyoshi Kondo +4 more 2010-03-16