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 76–100 of 115 patents

Patent #TitleCo-InventorsDate
8929789 Fixing device with resistance heating element capable of accurately generating heat and image forming apparatus with fixing device Hiroshi Yoshinaga, Masaaki Yoshikawa, Kenji Ishii, Yuji Arai, Naoki Iwaya +9 more 2015-01-06
8918042 Fixing device and image forming apparatus including the fixing device Takahiro Imada, Masahiko Satoh, Masaaki Yoshikawa, Kenji Ishii, Tadashi Ogawa +13 more 2014-12-23
8903296 Fixing device and image forming apparatus incorporating same Toshihiko Shimokawa, Yuji Arai, Yoshiki Yamaguchi, Arinobu Yoshiura, Tetsuo Tokuda +9 more 2014-12-02
8886101 Fixing device capable of enhancing durability of endless belt and image forming apparatus incorporating the same Teppei Kawata, Masahiko Satoh, Masaaki Yoshikawa, Kenji Ishii, Hiroshi Yoshinaga +13 more 2014-11-11
8886090 Fixing device including an engagement-disengagement unit and image forming apparatus equipped with the fixing device Teppei Kawata, Kenji Ishii, Tadashi Ogawa, Arinobu Yoshiura, Toshihiko Shimokawa +12 more 2014-11-11
8886103 Fixing device capable of minimizing damage of endless belt and image forming apparatus incorporating same Kensuke Yamaji, Masahiko Satoh, Masaaki Yoshikawa, Hiroshi Yoshinaga, Kenji Ishii +12 more 2014-11-11
8873984 Fixing device, image forming apparatus incorporating same, and fixing method Kenji Ishii, Yuji Arai, Yoshiki Yamaguchi, Arinobu Yoshiura, Toshihiko Shimokawa +8 more 2014-10-28
8855506 Image forming apparatus Takamasa Hase, Masahiko Satoh, Shinichi Namekata, Kenji Ishii, Takeshi Uchitani +14 more 2014-10-07
8831498 Fixing device and guide mechanism included therein Naoki Iwaya, Masahiko Satoh, Masaaki Yoshikawa, Hiroshi Yoshinaga, Kenji Ishii +12 more 2014-09-09
8792797 Fixing device, image forming apparatus, and heater control method Yutaka Ikebuchi, Masaaki Yoshikawa, Kenji Ishii, Hiroshi Yoshinaga, Yuji Arai +9 more 2014-07-29
8761650 Fixing device and image forming apparatus Masaaki Yoshikawa, Kenji Ishii, Hiroshi Yoshinaga, Yuji Arai, Naoki Iwaya +9 more 2014-06-24
8725038 Belt assembly, fixing device, and image forming apparatus incorporating same Yoshiki Yamaguchi, Masaaki Yoshikawa, Kenji Ishii, Yuji Arai, Naoki Iwaya +9 more 2014-05-13
8682218 Fixing device and image forming apparatus incorporating same Yoshiki Yamaguchi, Masaaki Yoshikawa, Kenji Ishii, Hiroshi Yoshinaga, Yuji Arai +9 more 2014-03-25
8676103 Fixing device and image forming apparatus incorporating same Masaaki Yoshikawa, Yuji Arai, Yoshiki Yamaguchi, Arinobu Yoshiura, Toshihiko Shimokawa +9 more 2014-03-18
8676104 Fixing device and image forming apparatus Masaaki Yoshikawa, Tetsuo Tokuda, Yutaka Ikebuchi, Takuya Seshita, Hiroshi Yoshinaga +9 more 2014-03-18
8655211 Fixing device and image forming apparatus incorporating same Ippei Fujimoto, Yuji Arai, Yoshiki Yamaguchi, Naoki Iwaya, Arinobu Yoshiura +9 more 2014-02-18
7957663 Heater, fixing unit and image forming apparatus Kazuhito Kishi, Yasuhisa Kato, Masami Okamoto, Yasutada Tsukioka, Susumu Matsusaka +1 more 2011-06-07
7953338 Heating apparatus, fixing apparatus, and image forming apparatus which charges an auxiliary power unit to less than a maximum value in a standby status 2011-05-31
7885569 Heater, fixing unit and image forming apparatus operable with a main and auxiliary power supply unit Kazuhito Kishi, Yasuhisa Kato, Masami Okamoto, Yasutada Tsukioka, Susumu Matsusaka +1 more 2011-02-08
7664410 Image forming apparatus with control of power to a fixing unit 2010-02-16
7609988 Heater, fixing unit and image forming apparatus having power supplied from chargeable auxiliary power supplying unit varied per unit time Kazuhito Kishi, Yasuhisa Kato, Masami Okamoto, Yasutada Tsukioka, Susumu Matsusaka +1 more 2009-10-27
7603049 Image formation apparatus and associated method of storing power Kazuhito Kishi, Susumu Matsusaka, Yasuhisa Kato, Akiyasu Amita, Masami Okamoto +1 more 2009-10-13
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, Yasutada Tsukioka +3 more 2009-04-07