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 26–50 of 186 patents

Patent #TitleCo-InventorsDate
9239553 Fixing device and image forming apparatus Yuji Arai, Takayuki Seki, Yoshiki Yamaguchi, Shuntaroh Tamaki, Yutaka Ikebuchi +17 more 2016-01-19
9239559 Fixing device and image forming apparatus including same Takeshi Uchitani, Masahiko Satoh, Kenji Ishii, Tadashi Ogawa, Teppei Kawata +19 more 2016-01-19
9235177 Fixing device and image forming apparatus incorporating same Takuya Seshita, Masahiko Satoh, Hiroshi Yoshinaga, Kenji Ishii, Tadashi Ogawa +15 more 2016-01-12
9207596 Image forming apparatus including a fixing device Takamasa Hase, Masahiko Satoh, Shinichi Namekata, Kenji Ishii, Takeshi Uchitani +14 more 2015-12-08
9164443 Fixing device and image forming apparatus Toshihiko Shimokawa, Takayuki Seki, Yuji Arai, Takeshi Yamamoto, Ryuuichi Mimbu +10 more 2015-10-20
9158248 Fixing device and image forming apparatus Yuji Arai, Takayuki Seki, Takeshi Yamamoto, Ryuuichi Mimbu, Yutaka Ikebuchi +10 more 2015-10-13
9158250 Fixing device and image forming apparatus Takahiro Imada, Kenji Ishii, Hiroshi Yoshinaga, Yuji Arai, Naoki Iwaya +9 more 2015-10-13
9152108 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 2015-10-06
9146508 Fixing device, image forming apparatus, and fixing method Takahiro Imada, Takayuki Seki, Yuji Arai, Takeshi Yamamoto, Ryuuichi Mimbu +10 more 2015-09-29
9141047 Fixing device and image forming apparatus Takeshi Uchitani, Masahiko Satoh, Kenji Ishii, Tadashi Ogawa, Takahiro Imada +15 more 2015-09-22
9116481 Fixing device including a reflector and image forming apparatus Takayuki Seki, Yuji Arai, Hiroshi Yoshinaga, Ryuuichi Mimbu, Takuya Seshita +10 more 2015-08-25
9069304 Image forming apparatus Takuya Seshita, Masahiko Satoh, Hiroshi Yoshinaga, Naoki Iwaya, Hiromasa Takagi +12 more 2015-06-30
9063493 Fixing device Kensuke Yamaji, Masahiko Satoh, Kenji Ishii, Hiroshi Yoshinaga, Tadashi Ogawa +11 more 2015-06-23
9063480 Fixing device, image forming device, and separating member Arinobu Yoshiura, Masahiko Satoh, Kenji Ishii, Tadashi Ogawa, Takahiro Imada +13 more 2015-06-23
9052658 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 2015-06-09
9046838 Fixing device and image forming apparatus Yuji Arai, Takayuki Seki, Yoshiki Yamaguchi, Shuntaroh Tamaki, Yutaka Ikebuchi +17 more 2015-06-02
9046837 Fixing device and method, and image forming apparatus incorporating same Yutaka Ikebuchi, Kenji Ishii, Yuji Arai, Hiromasa Takagi, Naoki Iwaya +9 more 2015-06-02
9046839 Fixing device including a heat shield and image forming apparatus Yuji Arai, Takayuki Seki, Takeshi Yamamoto, Ryuuichi Mimbu, Yutaka Ikebuchi +11 more 2015-06-02
9042761 Fixing device and image forming apparatus Takeshi Uchitani, Masahiko Satoh, Kenji Ishii, Tadashi Ogawa, Takahiro Imada +15 more 2015-05-26
9037008 Fixing device and image forming apparatus including same Takamasa Hase, Masahiko Satoh, Kenji Ishii, Hiroshi Yoshinaga, Tadashi Ogawa +13 more 2015-05-19
9031485 Fixing device and endless belt assembly Kenji Ishii, Masahiko Satoh, Hiroshi Yoshinaga, Takeshi Uchitani, Tadashi Ogawa +12 more 2015-05-12
9031439 Fixing device and image forming device Takamasa Hase, Kenji Ishii, Tadashi Ogawa, Teppei Kawata, Arinobu Yoshiura +12 more 2015-05-12
9026025 Fixing device including heating span adjuster, image forming apparatus, and fixing method Ryuuichi Mimbu, Takayuki Seki, Takeshi Yamamoto, Yutaka Ikebuchi, Takuya Seshita +10 more 2015-05-05
9026024 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 +13 more 2015-05-05
9008558 Separator and separation device, fixing device, and image forming apparatus incorporating same Kazuya Saito, Masahiko Satoh, Kenji Ishii, Tadashi Ogawa, Hiromasa Takagi +13 more 2015-04-14