MH

Makoto Hirakawa

Ricoh Company: 46 patents #272 of 9,818Top 3%
TC Toagosei Co.: 5 patents #30 of 338Top 9%
SC Sumitomo Precision Products Co.: 3 patents #24 of 199Top 15%
Mitsubishi Electric: 2 patents #11,187 of 25,717Top 45%
Overall (All Time): #43,700 of 4,157,543Top 2%
56
Patents All Time

Issued Patents All Time

Showing 26–50 of 56 patents

Patent #TitleCo-InventorsDate
9841584 Magnification optical system Hibiki Tatsuno, Kiichiro Nishina, Yasuyuki Shibayama, Takanobu Osaka 2017-12-12
9738519 Fuel reformer and fuel cell Shigeru Mizukawa 2017-08-22
9666890 Fuel cell Shigeru Mizukawa 2017-05-30
9494793 Light beam scanning device and image forming apparatus Nobuyuki Arai, Yoshinobu Sakaue, Noboru Kusunose, Tomoya FUJII 2016-11-15
9348121 Magnification optical system Hibiki Tatsuno, Kiichiro Nishina, Yasuyuki Shibayama, Takanobu Osaka 2016-05-24
9252161 Thin film transistor array substrate and manufacturing method thereof, and liquid crystal display device and manufacturing method thereof Toshihiko Iwasaka 2016-02-02
9221272 Optical scanning device and image forming apparatus 2015-12-29
9195062 Optical scanning device and image forming apparatus Nobuyuki Arai, Naoki Miyatake, Naoto Watanabe, Tadashi Nakamura 2015-11-24
9158119 Enlargement optical system Kiichiro Nishina, Hibiki Tatsuno, Yasuyuki Shibayama, Takanobu Osaka 2015-10-13
9069238 Image displaying apparatus Kiichiro Nishina, Hibiki Tatsuno, Yasuyuki Shibayama, Takanobu Osaka 2015-06-30
9046674 Magnification optical system Hibiki Tatsuno, Kiichiro Nishina, Yasuyuki Shibayama, Takanobu Osaka 2015-06-02
9039196 Image displaying apparatus having plane mirror at conjugate to image displaying element Hibiki Tatsuno, Takanobu Osaka, Yasuyuki Shibayama, Kiichiro Nishina 2015-05-26
8922883 Magnification optical system Hibiki Tatsuno, Kiichiro Nishina, Yasuyuki Shibayama, Takanobu Osaka 2014-12-30
8624951 Optical scanning device and image forming apparatus Yoshinori Hayashi 2014-01-07
8373736 Optical scanning device and image forming apparatus Hiroyoshi Funato, Kazunori Bannai, Daisuke Imaki, Yoshinori Hayashi 2013-02-12
8233209 Optical scanning device and image forming apparatus Naoki Miyatake, Yoshinori Hayashi 2012-07-31
8223417 Optical scanning device and image forming apparatus Yoshinori Hayashi 2012-07-17
8223418 Optical scanning device and image forming apparatus Daisuke Ichii 2012-07-17
8085455 Optical scanning device, method of adjusting the same, and image forming apparatus 2011-12-27
7903135 Optical scanning device and image forming apparatus for optimizing arrangement intervals in a main-scanning direction and a sub-scanning direction Daisuke Ichii, Yoshinori Hayashi, Seizo Suzuki, Masaaki Ishida 2011-03-08
7777967 Zoom lens, camera device and personal digital assistant 2010-08-17
7738007 Optical scanning device and method for adjusting errors Daisuke Ichii 2010-06-15
7671939 Liquid crystal display element Toshio Araki, Tomoki Nakamura 2010-03-02
7670752 Photosensitive resin composition, composition for solder resist, and photosensitive dry film Masao Takei, Hiroshi Niizuma 2010-03-02
7633663 Optical scanning device and image forming apparatus Naoki Miyatake 2009-12-15