HS

Hiroaki Sakai

SE Seiko Epson: 32 patents #449 of 7,774Top 6%
Canon: 31 patents #1,730 of 19,416Top 9%
NI Ngk Insulators: 16 patents #195 of 2,083Top 10%
HH Hitachi High-Technologies: 10 patents #266 of 1,917Top 15%
Mitsubishi Electric: 9 patents #3,275 of 25,717Top 15%
Sumitomo Electric Industries: 6 patents #4,612 of 21,551Top 25%
KS Kyocera Document Solutions: 3 patents #862 of 1,545Top 60%
MC Mita Industrial Co.: 3 patents #398 of 891Top 45%
PA Panasonic: 2 patents #9,678 of 21,108Top 50%
Fujitsu Limited: 2 patents #10,930 of 24,456Top 45%
OC Okuno Chemical Industries Co.: 1 patents #25 of 77Top 35%
NT Nagaoka University Of Technology: 1 patents #15 of 81Top 20%
KS Kobe Steel: 1 patents #857 of 2,031Top 45%
TC Threebond Co.: 1 patents #61 of 172Top 40%
Honda Motor Co.: 1 patents #12,035 of 21,052Top 60%
NC Nippon Air Brake Co.: 1 patents #53 of 107Top 50%
Overall (All Time): #10,108 of 4,157,543Top 1%
119
Patents All Time

Issued Patents All Time

Showing 76–100 of 119 patents

Patent #TitleCo-InventorsDate
6898385 Image forming apparatus with varied charge voltages Mitsuhiro Ito 2005-05-24
6885834 Printing apparatus Mitsuhiro Ito 2005-04-26
6869902 Silicon nitride porous body and method of manufacturing the same Katsuhiro Inoue, Kenji Morimoto, Masaaki Masuda, Shinji Kawasaki 2005-03-22
6846764 Silicon nitride porous body and method of manufacturing the same Katsuhiro Inoue, Kenji Morimoto, Masaaki Masuda, Shinji Kawasaki 2005-01-25
6823159 IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE INCLUDING A DEVELOPING DEVICE PROVIDED AT LEAST WITH A DEVELOPER HOLDING MEMBER FOR HOLDING A DEVELOPER CONTAINING A TONER AND A DEVELOPER REGULATING MEMBER Seiji Saito, Takeshi Kawamura 2004-11-23
6815038 Honeycomb structure Kenji Morimoto, Katsuhiro Inoue, Shinji Kawasaki 2004-11-09
6788382 Moving picture coding control apparatus, and moving picture coding control data generating apparatus Masashi Mori, Kunio Nakaoka, Yoshinari Sugegaya 2004-09-07
6777114 Silicon carbide-based porous body and process for production thereof Takahiro Tomita, Shuichi Ichikawa, Shinji Kawasaki 2004-08-17
6764742 Honeycomb structure body and production method thereof Shuichi Ichikawa, Takahiro Tomita, Shinji Kawasaki 2004-07-20
6766132 Developing device Takeshi Kawamura 2004-07-20
6746748 Honeycomb structure and process for production thereof Shuichi Ichikawa, Takahiro Tomita, Shinji Kawasaki 2004-06-08
6615002 Image forming apparatus and process cartridge for applying an alternating current to a charging member or charging means for charging an image bearing member Seiji Saito, Tomohiro Nakamori, Hiroshi Takami, Masaru Shimura, Takeshi Kawamura 2003-09-02
6603939 Developing apparatus, process cartridge, connecting method between developing frame and developer frame, and flexible seal Shinjiro Toba, Tadayuki Tsuda, Shigeo Miyabe 2003-08-05
6546214 Image forming apparatus comprising storing means for storing a parameter regarding an accumulation operation amount of the apparatus or of a cartridge detachably mountable to the apparatus Seiji Saito, Takeshi Kawamura 2003-04-08
6539184 Image forming apparatus with current control Masaru Shimura, Tomohiro Nakamori, Hiroshi Takami, Seiji Saito 2003-03-25
6522347 Display apparatus, portable information processing apparatus, information recording medium, and electronic apparatus Keisuke Tsuji 2003-02-18
6397017 Developer amount detecting method, developing device, process cartridge and electrophotographic image forming apparatus Kazushi Watanabe, Toshiyuki Karakama, Masaru Shimura, Hideki Matsumoto, Seiji Saito 2002-05-28
6282384 Developing device, process cartridge and electrophotographic image forming apparatus Seiji Saito, Masaru Shimura 2001-08-28
D445824 Printer for a computer Hirokazu Yamano 2001-07-31
5915145 Image forming apparatus Masaru Shimura 1999-06-22
5904871 Image heating device Hiroshi Kataoka 1999-05-18
5851712 Electrophotosensitive material Nariaki Muto, Keisuke Sumida, Hiroaki Iwasaki, Tsuneo Oki, Eiichi Miyamoto +1 more 1998-12-22
5819134 Fixing apparatus having a temperature control system for a plurality of heaters Kaoru Sato, Junichi Kimizuka, Tatsuto Tachibana 1998-10-06
5682576 Fixing device Masaharu Ohkubo, Norio Hashimoto, Takayasu Yuminamochi, Hiroto Hasegawa, Kazuaki Ono +2 more 1997-10-28
5679203 Apparatus for peeling the interlayer of a two-sided adhesive tape 1997-10-21