KI

Kazumasa Ishikawa

Ricoh Company: 8 patents #2,692 of 9,818Top 30%
OC Olympus Optical Co.: 3 patents #953 of 2,334Top 45%
NC Nippon Columbia Co.: 1 patents #15 of 66Top 25%
OK Okuma: 1 patents #106 of 233Top 50%
Overall (All Time): #383,665 of 4,157,543Top 10%
13
Patents All Time

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #TitleCo-InventorsDate
9067265 Cutting method Takashi Norihisa, Fumihiro Itoigawa, Keiichi Kawata 2015-06-30
7712892 Image forming apparatus Hajime Nishida, Manabu Nonaka, Eiki Yoshimizu, Shinichiro Naruse, Yasuhiro Kawashima +10 more 2010-05-11
7505714 Image forming device Shoji Asanuma, Shuji Tanaka, Manabu Nonaka, Taku Kudoh, Hajime Nishida +8 more 2009-03-17
7431422 Head cleaner and image forming apparatus Shoji Asanuma, Manabu Nonaka, Hajime Nishida, Akihiro Fujita, Eiki Yoshimizu +5 more 2008-10-07
7393080 Image forming apparatus 2008-07-01
7367667 Image forming apparatus with conveying part arranged to allow drying Taku Kudoh, Manabu Nonaka 2008-05-06
5884860 Rolled paper feeding apparatus which provides a constant torque for uncurling paper and a torque limiting device therefor Akihiro Fujita 1999-03-23
D375118 Cleaning toner magazine Shigemi Kanda 1996-10-29
5546370 Compact apparatus having bidirectional motion for loading/unloading an information recording medium 1996-08-13
5475671 Optical information detection circuit and detecting photoelectrically converted signal from light receiving means comprising at least two light receiving elements 1995-12-12
4695898 Facsimile machine using cut sheets of paper Yuji Koseki 1987-09-22
4621209 Frequency-independent phase compensation circuit 1986-11-04
4336501 Frequency characteristic adjusting circuit Shin Takahashi, Masahide Yoneyama 1982-06-22