RK

Ryuichi Kikegawa

Ricoh Company: 13 patents #1,714 of 9,818Top 20%
Overall (All Time): #380,461 of 4,157,543Top 10%
13
Patents All Time

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #TitleCo-InventorsDate
10007221 Image forming apparatus to control supply of even abnormal levels of a transfer voltage, based upon temperature detected 2018-06-26
9971286 Control method of image forming apparatus Tsukasa Satoh 2018-05-15
9958815 Control method of image forming apparatus Tsukasa Satoh 2018-05-01
8953992 Fixing device and image forming apparatus Ayako Mito 2015-02-10
8019247 Fusing device and image forming apparatus which turns on an edge heater Ayako Mito 2011-09-13
7565087 Fixing device, image forming apparatus including the fixing device, and fixing method Susumu Matsusaka, Kazuhito Kishi, Yasuhisa Kato, Masami Okamoto, Akiyasu Amita +2 more 2009-07-21
7551869 Fixing device, image forming apparatus including the fixing device, and fixing method Kazuhito Kishi, Susumu Matsusaka, Yasuhisa Kato, Akiyasu Amita, Masami Okamoto +2 more 2009-06-23
7515845 Method for supplying power, and fixing and image forming apparatuses Kazuhito Kishi, Yasuhisa Kato, Akiyasu Amita, Masami Okamoto, Hiromasa Takagi +3 more 2009-04-07
7366432 Fixing device for fixing an image, image forming apparatus including the fixing device, and fixing method Kazuhito Kishi, Susumu Matsusaka, Yasuhisa Kato, Akiyasu Amita, Masami Okamoto +2 more 2008-04-29
7356270 Fixing device, image forming apparatus including the fixing device, and fixing method Susumu Matsusaka, Kazuhito Kishi, Yasuhisa Kato, Akiyasu Amita, Masami Okamoto +2 more 2008-04-08
7343113 Fixing device, image forming apparatus including the fixing device, and fixing method Susumu Matsusaka, Kazuhito Kishi, Yasuhisa Kato, Masami Okamoto, Akiyasu Amita +2 more 2008-03-11
7333743 Fixing device, image forming apparatus including the fixing device, and fixing method Kazuhito Kishi, Susumu Matsusaka, Yasuhisa Kato, Akiyasu Amita, Masami Okamoto +2 more 2008-02-19
7308216 Image forming apparatus and method to supply power to a fixing device Kazuhito Kishi, Susumu Matsusaka, Yasuhisa Kato, Akiyasu Amita, Masami Okamoto +2 more 2007-12-11