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 1–25 of 186 patents

Patent #TitleCo-InventorsDate
12017851 Storage cabinet Michihiro Matsumoto, Tatsuya Morishita 2024-06-25
10935911 Fixing device capable of enhancing durability of endless belt and image forming apparatus incorporating the same Teppei Kawata, Masahiko Satoh, Kenji Ishii, Hiroshi Yoshinaga, Tadashi Ogawa +13 more 2021-03-02
10001735 Fixing device and image forming apparatus Takahiro Imada, Kenji Ishii, Hiroshi Yoshinaga, Yuji Arai, Naoki Iwaya +9 more 2018-06-19
9983526 Fixing device and image forming apparatus including same Takeshi Uchitani, Masahiko Satoh, Kenji Ishii, Tadashi Ogawa, Teppei Kawata +19 more 2018-05-29
9971289 Image forming apparatus Takamasa Hase, Masahiko Satoh, Shinichi Namekata, Kenji Ishii, Takeshi Uchitani +14 more 2018-05-15
9927748 Fixing device and image forming apparatus Hiroshi Yoshinaga, Masahiko Satoh, Kenji Ishii, Tadashi Ogawa, Hiromasa Takagi +12 more 2018-03-27
9811031 Fixing device capable of enhancing durability of endless belt and image forming apparatus incorporating the same Teppei Kawata, Masahiko Satoh, Kenji Ishii, Hiroshi Yoshinaga, Tadashi Ogawa +13 more 2017-11-07
9727008 Fixing device and image forming apparatus including the fixing device Teppei Kawata, Masahiko Satoh, Kenji Ishii, Hiroshi Yoshinaga, Takeshi Uchitani +13 more 2017-08-08
9727011 Image forming apparatus and image forming method Yutaka Ikebuchi, Hiroshi Yoshinaga, Takayuki Seki, Yuji Arai, Ryuuichi Mimbu +5 more 2017-08-08
9715203 Fixing device and image forming apparatus including same Takeshi Uchitani, Masahiko Satoh, Kenji Ishii, Tadashi Ogawa, Teppei Kawata +19 more 2017-07-25
9690243 Image forming apparatus including a fixing device that includes a radiant heat heating source and a fixing member that rotates before an abnormality solved Takamasa Hase, Masahiko Satoh, Shinichi Namekata, Kenji Ishii, Takeshi Uchitani +14 more 2017-06-27
9564262 Superconducting magnetic field generating device, superconducting magnetic field generating method, and nuclear magnetic resonance apparatus Yoshitaka Ito, Yousuke Yanagi 2017-02-07
9557692 Fixing device and image forming apparatus Takahiro Imada, Kenji Ishii, Hiroshi Yoshinaga, Yuji Arai, Naoki Iwaya +9 more 2017-01-31
9535380 Fixing device and image forming apparatus Toshihiko Shimokawa, Yutaka Ikebuchi, Hiroshi Yoshinaga, Takayuki Seki, Yuji Arai +9 more 2017-01-03
9507306 Fixing device with a temperature detector adjacent an easily deformable location and image forming apparatus including same Takeshi Uchitani, Masahiko Satoh, Kenji Ishii, Tadashi Ogawa, Takahiro Imada +13 more 2016-11-29
9454114 Fixing device and image forming apparatus including same Takamasa Hase, Masahiko Satoh, Kenji Ishii, Hiroshi Yoshinaga, Tadashi Ogawa +13 more 2016-09-27
9448514 Image forming apparatus and image forming method Yutaka Ikebuchi, Hiroshi Yoshinaga, Takayuki Seki, Yuji Arai, Ryuuichi Mimbu +5 more 2016-09-20
9439070 User authentication system Toshiharu Sugiyama 2016-09-06
9405270 Fixing device and image forming apparatus incorporating same Tadashi Ogawa, Kenji Ishii, Teppei Kawata, Arinobu Yoshiura, Toshihiko Shimokawa +8 more 2016-08-02
9405250 Fixing device capable of minimizing damage of endless rotary body and image forming apparatus incorporating same Tadashi Ogawa, Masahiko Satoh, Hiroshi Yoshinaga, Kenji Ishii, Takeshi Uchitani +12 more 2016-08-02
9405242 Fixing device and image forming device Takamasa Hase, Kenji Ishii, Tadashi Ogawa, Teppei Kawata, Arinobu Yoshiura +12 more 2016-08-02
9367010 Fixing device and image forming device Hiromasa Takagi, Masahiko Satoh, Kenji Ishii, Hiroshi Yoshinaga, Tadashi Ogawa +13 more 2016-06-14
9316972 Fixing device and image forming apparatus incorporating same Yuji Arai, Kenji Ishii, Tadashi Ogawa, Teppei Kawata, Arinobu Yoshiura +8 more 2016-04-19
9310733 Fixing device and image forming apparatus including same Hiroshi Yoshinaga, Kenichi Hasegawa, Kenji Ishii, Akira Shinshi, Naoki Iwaya +8 more 2016-04-12
9291967 Fixing device and image forming apparatus incorporating same Naoki Iwaya, Masahiko Satoh, Kenji Ishii, Hiroshi Yoshinaga, Tadashi Ogawa +13 more 2016-03-22