HI

Hirokazu Ishii

Ricoh Company: 51 patents #217 of 9,818Top 3%
Canon: 27 patents #2,142 of 19,416Top 15%
MA Maxell: 6 patents #102 of 437Top 25%
Samsung: 4 patents #25,854 of 75,807Top 35%
KP Kabushiki Kaisha Pilot: 2 patents #49 of 160Top 35%
HI Hitachi: 2 patents #13,388 of 28,497Top 50%
JA Japan Aerospace Exploration Agency: 1 patents #160 of 546Top 30%
HC Hitachi Computer Peripherals Co.: 1 patents #41 of 133Top 35%
Overall (All Time): #16,679 of 4,157,543Top 1%
93
Patents All Time

Issued Patents All Time

Showing 76–93 of 93 patents

Patent #TitleCo-InventorsDate
7436539 Image processing apparatus, image processing method, storage medium storing a program readable by a computer and program Tetsuya Suwa, Tomoyuki Watanabe 2008-10-14
7409182 Brush member and transfer device and image forming apparatus using the same 2008-08-05
7383104 Low-noise flight support system Kohei Funabiki, Yoshinori Okuno, Hiromi Gomi 2008-06-03
7184678 Image forming apparatus with improved separatability of transfer material Satoshi Takano, Hiroshi Saitoh, Ryoh Tanoue, Itaru Matsuda, Yuji Suzuki +3 more 2007-02-27
6961535 Image forming apparatus Shinichi Kawahara, Satoshi Takano, Toshihiro Sugiyama, Hiroshi Saitoh, Yuji Arai +1 more 2005-11-01
6895209 Cleaning device and image forming apparatus using the same Shinichi Kawahara, Satoshi Takano, Hiroshi Saitoh, Toshihiro Sugiyama, Yuji Arai 2005-05-17
6813467 Image forming apparatus Shinichi Kawahara, Satoshi Takano, Toshihiro Sugiyama, Hiroshi Saitoh, Yuji Arai +1 more 2004-11-02
6778802 Image transferring and sheet separating device and image forming apparatus including the same Toshiyuki Kabata 2004-08-17
6697583 Image forming method and image forming device using same 2004-02-24
6282386 Transfer-conveyance device and method capable of controlling transfer bias according to change in environmental condition 2001-08-28
6188862 Image forming apparatus preventing toner adhesion onto transfer member 2001-02-13
5930573 Image forming apparatus and image transferring device thereof having conveying member with selected surface resistivity Kazue Miyamoto 1999-07-27
5822667 Transfer separator Yuko Hayama, Satoshi Takano, Akio Kutsuwada, Hakuti Mizuishi, Hiroshi Itoh +1 more 1998-10-13
5812919 Image transferring device for an image forming apparatus Satoshi Takano, Itaru Matsuda, Yuko Hayama, Akio Kutsuwada, Haruji Mizuishi +1 more 1998-09-22
5631725 Image transfer device for an image forming apparatus Yuko Harasawa, Itaru Matsuda, Satoshi Takano, Akio Kutsuwada 1997-05-20
5594562 Hand-writable polymer dispersed liquid crystal board set with high resistance layer adjacent conductive layer Morio Sato, Yutaka Abe, Jun Takano, Yasuzo Murata 1997-01-14
5515146 Apparatus and method for cleaning a belt of an image forming apparatus Yuko Harasawa, Itaru Matsuta, Satoshi Takano 1996-05-07
5351143 Hand-writable polymer dispersed liquid crystal board set with high resistance layer of crosslinking polymer adjacent conductive layer Morio Sato, Yutaka Abe, Jun Takano, Yasuzo Murata 1994-09-27