HT

Hiromasa Takagi

Ricoh Company: 114 patents #26 of 9,818Top 1%
Overall (All Time): #10,849 of 4,157,543Top 1%
115
Patents All Time

Issued Patents All Time

Showing 101–115 of 115 patents

Patent #TitleCo-InventorsDate
7496309 Image forming apparatus with auxiliary power source Susumu Matsusaka, Kazuhito Kishi, Yasuhisa Kato, Akiyasu Amita, Masami Okamoto +1 more 2009-02-24
7373094 Fixing unit having a plurality of heaters, image forming apparatus and method of determining temperature detecting position of temperature sensor Kazuhito Kishi, Yasuhisa Kato, Akiyasu Amita, Masami Okamoto, Yasutada Tsukioka 2008-05-13
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
7352987 Fixing device and image forming apparatus for holding a recording medium by electrostatic force Naoki Iwata, Kunihiko Tomita 2008-04-01
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
7239821 Image forming apparatus including a heating unit Susumu Matsusaka, Kazuhito Kishi, Yasuhisa Kato, Akiyasu Amita, Masami Okamoto +1 more 2007-07-03
7212759 Heating device, fixing device and image forming apparatus Kazuhito Kishi, Yasuhisa Kato, Akiyasu Amita, Masami Okamoto, Yasutada Tsukioka 2007-05-01
7212758 Image-forming apparatus Kazuhito Kishi, Yasuhisa Kato, Akiyasu Amita, Masami Okamoto, Yasutada Tsukioka 2007-05-01
7209675 Image forming apparatus Susumu Matsusaka, Kazuhito Kishi, Yasuhisa Kato, Akiyasu Amita, Masami Okamoto +1 more 2007-04-24
7130555 Fixing unit having a plurality of heaters, image forming apparatus and method of determining temperature detecting position of temperature sensor Kazuhito Kishi, Yasuhisa Kato, Akiyasu Amita, Masami Okamoto, Yasutada Tsukioka 2006-10-31
7116923 Fuser provided with auxiliary power supply device to operate with varying power Kazuhito Kishi, Yasuhisa Kato, Akiyasu Amita, Masami Okamoto, Yasutada Tsukioka 2006-10-03
7054570 Image-forming apparatus Kazuhito Kishi, Yasuhisa Kato, Akiyasu Amita, Masami Okamoto, Yasutada Tsukioka 2006-05-30