MY

Masaaki Yoshikawa

Ricoh Company: 113 patents #27 of 9,818Top 1%
Yamaha Motor: 26 patents #18 of 2,310Top 1%
Aisin Seiki Kabushiki Kaisha: 10 patents #313 of 3,782Top 9%
MM Mitsubishi Mining: 4 patents #189 of 2,247Top 9%
AC Asahi Glass Co.: 4 patents #490 of 2,251Top 25%
NC Nippon Metal Industry Co.: 4 patents #1 of 22Top 5%
PA Panasonic: 3 patents #7,617 of 21,108Top 40%
Sumitomo Electric Industries: 3 patents #7,735 of 21,551Top 40%
Mitsubishi Electric: 2 patents #11,187 of 25,717Top 45%
NC Nikkiso Co.: 2 patents #107 of 287Top 40%
NK Nippon Gohsei Kagaku Kogyo: 2 patents #30 of 142Top 25%
NM Nisshin Flour Milling: 2 patents #106 of 320Top 35%
RI Riken: 2 patents #375 of 1,824Top 25%
TC Tohoku Ricoh Co.: 2 patents #69 of 204Top 35%
DC Dena Co.: 1 patents #81 of 210Top 40%
BL Brumby Corporation Limited: 1 patents #13 of 35Top 40%
IR Institute Of Physical And Chemical Research: 1 patents #66 of 172Top 40%
KC Kyowa Hakko Kogyo Co.: 1 patents #549 of 943Top 60%
KK Kirin Beer Kabushiki Kaisha: 1 patents #149 of 379Top 40%
TD Tokyo R & D: 1 patents #22 of 42Top 55%
Fujitsu Limited: 1 patents #14,843 of 24,456Top 65%
Overall (All Time): #3,964 of 4,157,543Top 1%
186
Patents All Time

Issued Patents All Time

Showing 76–100 of 186 patents

Patent #TitleCo-InventorsDate
8682192 Image forming apparatus Yutaka Ikebuchi, Yoshiki Yamaguchi, Toshihiko Shimokawa, Kenji Ishii, Naoki Iwaya +5 more 2014-03-25
8682218 Fixing device and image forming apparatus incorporating same Yoshiki Yamaguchi, Kenji Ishii, Hiroshi Yoshinaga, Yuji Arai, Hiromasa Takagi +9 more 2014-03-25
8676101 Fixing device having metal pipe with rough section and image forming apparatus incorporating same Akira Shinshi, Yoshiki Yamaguchi, Toshihiko Shimokawa, Tetsuo Tokuda, Yutaka Ikebuchi +5 more 2014-03-18
8676104 Fixing device and image forming apparatus Tetsuo Tokuda, Yutaka Ikebuchi, Takuya Seshita, Hiroshi Yoshinaga, Hajime Gotoh +9 more 2014-03-18
8676103 Fixing device and image forming apparatus incorporating same Yuji Arai, Hiromasa Takagi, Yoshiki Yamaguchi, Arinobu Yoshiura, Toshihiko Shimokawa +9 more 2014-03-18
8655246 Fixing device and image forming apparatus incorporating same Tetsuo Tokuda, Kenji Ishii, Hiroshi Yoshinaga, Naoki Iwaya, Yoshiki Yamaguchi +6 more 2014-02-18
8655211 Fixing device and image forming apparatus incorporating same Ippei Fujimoto, Yuji Arai, Hiromasa Takagi, Yoshiki Yamaguchi, Naoki Iwaya +9 more 2014-02-18
8655244 Fixing device and image forming apparatus incorporating same Kenichi Hasegawa, Akira Shinshi, Kenji Ishii, Hiroshi Yoshinaga, Yoshiki Yamaguchi +8 more 2014-02-18
8630572 Fixing device and image forming apparatus including same Ippei Fujimoto, Hiroshi Yoshinaga, Tetsuo Tokuda, Takamasa Hase, Toshihiko Shimokawa +7 more 2014-01-14
8615175 Fixing unit and image forming apparatus including same Takahiro Imada, Kenji Ishii, Akira Shinshi, Hiroshi Yoshinaga, Kenichi Hasegawa +7 more 2013-12-24
8600277 Fixing device and image forming apparatus incorporating same Yoshiki Yamaguchi, Toshihiko Shimokawa, Kenji Ishii, Naoki Iwaya, Takahiro Imada +6 more 2013-12-03
8600276 Heat conduction unit, fixing device, and image forming apparatus Kenji Ishii, Tetsuo Tokuda, Yoshiki Yamaguchi, Kenichi Hasegawa, Yutaka Ikebuchi +8 more 2013-12-03
8594549 Image forming apparatus incorporating a fixing device and contact member to reduce fixing member deformation Toshihiko Shimokawa, Akira Shinshi, Kenji Ishii, Hiroshi Yoshinaga, Naoki Iwaya +8 more 2013-11-26
8588670 Fixing device having a reflector and image forming apparatus incorporating same Toshihiko Shimokawa, Kenji Ishii, Naoki Iwaya, Tetsuo Tokuda, Yoshiki Yamaguchi +7 more 2013-11-19
8588668 Fixing device and image forming apparatus incorporating same Kenji Ishii, Yoshiki Yamaguchi, Toshihiko Shimokawa, Naoki Iwaya, Takahiro Imada +6 more 2013-11-19
8588638 Fixing device and image forming apparatus incorporating same Naoki Iwaya, Kenji Ishii, Hiroshi Yoshinaga, Tetsuo Tokuda, Yoshiki Yamaguchi +6 more 2013-11-19
8583020 Fixing device and image forming apparatus incorporating same Yoshiki Yamaguchi, Toshihiko Shimokawa, Kenji Ishii, Naoki Iwaya, Takahiro Imada +5 more 2013-11-12
8583019 Fixing device and image forming apparatus incorporating same Kenji Ishii, Yoshiki Yamaguchi, Toshihiko Shimokawa, Naoki Iwaya, Takahiro Imada +7 more 2013-11-12
8559839 Fixing device and image forming apparatus incorporating Takamasa Hase, Kenji Ishii, Tetsuo Tokuda, Naoki Iwaya, Yoshiki Yamaguchi +5 more 2013-10-15
8548366 Fixing device and image forming apparatus incorporating same Tetsuo Tokuda, Kenji Ishii, Hiroshi Yoshinaga, Naoki Iwaya, Yoshiki Yamaguchi +5 more 2013-10-01
8543025 Fixing device and image forming apparatus incorporating same Yutaka Ikebuchi, Kenji Ishii, Hiroshi Yoshinaga, Naoki Iwaya, Tetsuo Tokuda +6 more 2013-09-24
8515324 Fixing device and image forming apparatus employing the fixing device Kenji Ishii, Naoki Iwaya, Akira Shinshi, Kenichi Hasegawa, Hiroshi Yoshinaga +6 more 2013-08-20
8498561 Fixing device and image forming apparatus incorporating same having a reinforcing member including first and second flanges Yoshiki Yamaguchi, Kenji Ishii, Hiroshi Yoshinaga, Naoki Iwaya, Tetsuo Tokuda +7 more 2013-07-30
8489008 Fixing device and image forming apparatus incorporating same Naoki Iwaya, Kenji Ishii, Hiroshi Yoshinaga, Tetsuo Tokuda, Yoshiki Yamaguchi +5 more 2013-07-16
8472855 Fixing device and image forming apparatus incorporating same Akira Shinshi, Hiroshi Yoshinaga, Kenichi Hasegawa, Kenji Ishii, Naoki Iwaya +7 more 2013-06-25