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USPTO Patent Rankings Data through Dec 31, 2025
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Akitoshi Matsubara — 27 Patents

KOKonica: 19 patents #65 of 1,958Top 4%
KCKonishiroku Photo Industry Co.: 7 patents #123 of 894Top 15%
Hachioji, JP: #228 of 2,869 inventorsTop 8%
Overall (All Time): #142,059 of 4,157,543Top 4%
27 Patents All Time
Akitoshi Matsubara has been granted 27 US patents while listed as an inventor at Konica. The first was granted in 1983 and the most recent in April 2007. Akitoshi Matsubara ranks #142,059 of 4,157,543 US inventors in our database (top 3.4%). Patent records list Akitoshi Matsubara in Hachioji, JP.

Patents per Year

Patents granted per year, 1983 to 2007Bar chart with a peak of 5 patents in 1998.peak 51983: 1 patents19831984: 2 patents1986: 1 patents19861988: 1 patents1989: 3 patents19891990: 2 patents1991: 2 patents19911993: 1 patents1998: 5 patents19981999: 3 patents2000: 4 patents20002002: 1 patents2007: 1 patents2007

Issued Patents All Time

Showing 1–25 of 27 patents

Patent #TitleCo-InventorsDate
7210103 Printed book publishing system and management method for printed book publishing Seitarou Kasahara, Mitsuo Motohashi, Akira Kinoshita, Masahiko Kamei, Yuichi Atarashi +4 more 2007-04-24
6442368 Finishing technology in image forming system Masari Ohtsuka, Kimikazu Saitoh, Tetsuhiro Kodera, Seitaro Kasahara 2002-08-27
6148172 Image forming apparatus having means for enhancing accuracy of conveyance of recording sheets Takanori Kanda, Akira Kosugi, Keisuke Tanaka, Daisuke Ueda, Minoru Asakawa +5 more 2000-11-14
6118972 Image forming apparatus and image forming method Hirohiko Yamazaki, Takeo Morohashi 2000-09-12
6094552 Image forming apparatus for printing images in accordance with at least one of first information and second information Satoshi Haneda, Kunio Shigeta, Yotaro Sato, Tadayoshi Ikeda, Masakazu Fukuchi 2000-07-25
6032018 Sheet guiding member for guiding a sheet having a toner image on its surface and image forming apparatus Hiroshi Matsumoto 2000-02-29
5973716 Image forming apparatus Shinji Morita, Yasuo Tsurubuchi 1999-10-26
5920744 Image forming apparatus and method for efficiently forming images even after the occurrence of a jam Masakazu Fukuchi, Tadayoshi Ikeda, Satoshi Haneda, Kunio Shigeta, Yotaro Sato 1999-07-06
5875372 Image forming apparatus Yotaro Sato, Kunio Shigeta, Satoshi Haneda, Tadayoshi Ikeda, Masakazu Fukuchi 1999-02-23
5826143 Image forming apparatus with two transfer means Satoshi Haneda, Kunio Shigeta, Yotaro Sato, Masakazu Fukuchi, Tadayoshi Ikeda 1998-10-20
5822666 Image forming apparatus including a mechanism for eliminating mechanical shock caused by a cleaning device Satoshi Haneda, Kunio Shigeta, Yotaro Sato, Tadayoshi Ikeda, Masakazu Fukuchi 1998-10-13
5768655 Image forming apparatus and control method thereof Kunihisa Yoshino, Yoshiko Matsuoka, Jun Yokobori, Michio Osada 1998-06-16
5761573 Image forming apparatus for double-sided image formation with properly adjusted image density or color tone for each side Satoshi Haneda, Kunio Shigeta, Yotaro Sato, Masakazu Fukuchi, Tadayoshi Ikeda 1998-06-02
5758204 Duplex image forming apparatus with two image carriers and an image size discriminator Satoshi Haneda, Kunio Shigeta, Yotaro Sato, Tadayoshi Ikeda, Masakazu Fukuchi 1998-05-26
5272038 Electrostatic image developing resin-coated carrier and method for producing the same Meizo Shirose, Michiaki Ishikawa, Yoshiki Nishimori, Hiroyuki Takagiwa 1993-12-21
5047305 Electrostatic-image developing polyester toner with release agent Masafumi Uchida, Jiro Takahashi, Hiroyuki Takagiwa, Toshiko Yajima 1991-09-10
5021317 Electrostatic latent image developer with toner particles surface treated with a polysiloxane having ammonium salt functional groups Jiro Takahashi, Hiroyuki Takagiwa, Hiroya Masaki 1991-06-04
4940644 Toner for development of electrostatic images and image forming method by use thereof Satoru Ikeuchi, Kunio Akimoto, Yoshio Takizawa 1990-07-10
4935327 Polyester toner with antioxidant for development of electrostatic latent image Yoshio Takizawa, Jiro Takahashi, Satoru Ikeuchi 1990-06-19
4882258 Toner for development of electrostatic image and electrostatic latent image developer Satoru Ikeuchi, Mitutaka Arai, Yuki Okuyama 1989-11-21
4845006 Toner and process for developing electrostatic latent images Kiyoshi Tamaki 1989-07-04
4795689 Electrostatic image developing toner for use in heat-roller fixing Satoru Ikeuchi, Kunio Akimoto, Yoshio Takizawa 1989-01-03
4770969 Heat fusible toners for developing electrostatic images Meizo Shirose, Jiro Takahashi, Kenichi Kishi, Kiyoshi Tamaki 1988-09-13
4600676 Toner composition containing titanate coupling agent for electrophotography and method for producing said toner Sadatugu Terada, Kiyoshi Tamaki, Hideki Murata, Tsuneo Wada, Hiroyuki Takagiwa 1986-07-15
4486559 Toner composition for the development of electrostatic latent images and a method of preparing the same Hideki Murata, Sadatugu Terada, Kiyoshi Tamaki, Tsuneo Wada, Hiroyuki Takagiwa 1984-12-04