YY

Yoshiki Yamaguchi

Ricoh Company: 115 patents #24 of 9,818Top 1%
Mitsubishi Electric: 4 patents #7,099 of 25,717Top 30%
HI Hitachi: 3 patents #10,712 of 28,497Top 40%
MM Mitsubishi Mining: 2 patents #467 of 2,247Top 25%
IBM: 1 patents #44,794 of 70,183Top 65%
HC Hirose Electric Co.: 1 patents #259 of 407Top 65%
TT The University Of Tokyo: 1 patents #1,000 of 2,633Top 40%
GL Glory: 1 patents #217 of 385Top 60%
Overall (All Time): #8,739 of 4,157,543Top 1%
127
Patents All Time

Issued Patents All Time

Showing 101–125 of 127 patents

Patent #TitleCo-InventorsDate
8489008 Fixing device and image forming apparatus incorporating same Naoki Iwaya, Masaaki Yoshikawa, Kenji Ishii, Hiroshi Yoshinaga, Tetsuo Tokuda +5 more 2013-07-16
8472855 Fixing device and image forming apparatus incorporating same Akira Shinshi, Masaaki Yoshikawa, Hiroshi Yoshinaga, Kenichi Hasegawa, Kenji Ishii +7 more 2013-06-25
8463168 Fixing device and image forming apparatus including same Ippei Fujimoto, Akira Shinshi, Naoki Iwaya, Shuntaroh Tamaki, Hiroshi Yoshinaga +3 more 2013-06-11
8447220 Fixing device and image forming apparatus including same Masaaki Yoshikawa, Kenji Ishii, Naoki Iwaya, Tetsuo Tokuda, Yutaka Ikebuchi +5 more 2013-05-21
8437675 Fixing device and image forming apparatus incorporating same having a laminated heater with a flexible heat generation sheet Kenji Ishii, Masaaki Yoshikawa, Hiroshi Yoshinaga, Naoki Iwaya, Yutaka Ikebuchii +5 more 2013-05-07
8428501 Fixing device and image forming apparatus incorporating same Akira Shinshi, Kenichi Hasegawa, Masaaki Yoshikawa, Hiroshi Yoshinaga, Kenji Ishii +6 more 2013-04-23
8428502 Belt-type fixing device and image forming apparatus using same Tetsuo Tokuda, Masaaki Yoshikawa, Akira Shinshi, Kenichi Hasegawa, Hiroshi Yoshinaga +6 more 2013-04-23
8406647 Fixing device including a radiation member to cool a fixing member and a heat conductive member Akira Shinshi, Kenichi Hasegawa, Masaaki Yoshikawa, Hiroshi Yoshinaga, Kenji Ishii +8 more 2013-03-26
8401448 Fixing device and image forming apparatus incorporating same Kenichi Hasegawa, Masaaki Yoshikawa, Hiroshi Yoshinaga, Kenji Ishii, Akira Shinshi +6 more 2013-03-19
8401414 Fixing device and image forming apparatus incorporating same Masaaki Yoshikawa, Toshihiko Shimokawa, Kenji Ishii, Naoki Iwaya, Takahiro Imada +7 more 2013-03-19
8391743 Fixing device and image forming apparatus incorporating same Masanao Ehara, Naoki Iwaya, Yutaka Ikebuchi 2013-03-05
8385804 Fixing device and image forming apparatus employing the fixing device Kenichi Hasegawa, Masaaki Yoshikawa, Hiroshi Yoshinaga, Kenji Ishii, Akira Shinshi +8 more 2013-02-26
8364048 Fixing device and image forming apparatus including same Naoki Iwaya, Masanao Ehara, Yutaka Ikebuchi 2013-01-29
8364052 Fixing device and image forming apparatus incorporating same Naoki Iwaya, Akira Shinshi, Masaaki Yoshikawa, Kenji Ishii, Kenichi Hasegawa +8 more 2013-01-29
8311469 Fixing device and image forming apparatus incorporating same Masaaki Yoshikawa, Toshihiko Shimokawa, Kenji Ishii, Naoki Iwaya, Takahiro Imada +8 more 2012-11-13
8244168 Image forming apparatus with movable transfer device Masanao Ehara, Hiroshi Yoshinaga, Naoki Iwaya 2012-08-14
8219016 Fixing device and image forming apparatus incorporating same Kenichi Hasegawa, Akira Shinshi, Hiroshi Yoshinaga, Yutaka Ikebuchi, Ippei Fujimoto +3 more 2012-07-10
8213827 Fixing device, image forming apparatus incorporating same, and fixing method Akira Shinshi, Kenichi Hasegawa, Hiroshi Yoshinaga, Yutaka Ikebuchi, Ippei Fujimoto +3 more 2012-07-03
8023861 Fixing device and image-forming apparatus comprising the same Hiroshi Yoshinaga, Masanao Ehara, Akira Shinshi, Naoki Iwaya 2011-09-20
7937295 Product purchasing method, apparatus, and computer program product Takahiro Aoki, Toru Kaneko, Rei Suda 2011-05-03
7702271 Fixing device, and image forming apparatus using the fixing device Hiroshi Yamada, Fumihiro Sasaki, Shigeru Emoto, Jun Okamoto, Shinji Ohtani +7 more 2010-04-20
7437111 Fixing device, and image forming apparatus using the fixing device Hiroshi Yamada, Fumihiro Sasaki, Shigeru Emoto, Jun Okamoto, Shinji Ohtani +7 more 2008-10-14
RE38296 Semiconductor memory device with recessed array region Noboru Moriuchi, Toshihiko Tanaka, Norio Hasegawa, Yoshifumi Kawamoto, Shin Kimura +2 more 2003-11-04
5997595 Burner and a fuel etc. supply method Katsuhiko Yokohama, Toshiyuki Takegawa, Yoshinori Koyama 1999-12-07
5230474 Mill inert apparatus for coal pulverizer and method for prevention of explosion Masaaki Kinoshita, Shozo Kaneko, Hidenori Sakamoto 1993-07-27