Patents by Inventor Keisuke Nakai

Keisuke Nakai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7397894
    Abstract: It is an object of the present invention to provide a transmission imager which can produce a transmission image from two or more different view points with the use of a simpler arrangement. The transmission imager according to the present invention is provided having a radiation source 2 for radiating radioactive rays from its target 2a, a radiation detector, and a specimen table provided between the target 2 and the radiation detector for having a specimen to be examined placed thereon, wherein the radiation detector is arranged with its detecting surface at the center P extending substantially at a right angle to a reference axis L1 or L2 which extends from the center P to the target 2a. In particular, the transmission imager is characterized in that the radiation detector is a combination of two, first and second, radiation detectors 3 and 4.
    Type: Grant
    Filed: July 22, 2003
    Date of Patent: July 8, 2008
    Assignee: Pony Industry Co., Ltd.
    Inventors: Keisuke Nakai, Shigeru Sasakura, Masayuki Suzuki
  • Publication number: 20070189450
    Abstract: It is an object of the present invention to provide a transmission imager which can produce a transmission image from two or more different view points with the use of a simpler arrangement. The transmission imager according to the present invention is provided having a radiation source 2 for radiating radioactive rays from its target 2a, a radiation detector, and a specimen table provided between the target 2 and the radiation detector for having a specimen to be examined placed thereon, wherein the radiation detector is arranged with its detecting surface at the center P extending substantially at a right angle to a reference axis L1 or L2 which extends from the center P to the target 2a. In particular, the transmission imager is characterized in that the radiation detector is a combination of two, first and second, radiation detectors 3 and 4.
    Type: Application
    Filed: July 22, 2003
    Publication date: August 16, 2007
    Inventors: Keisuke Nakai, Shigeru Sasakura, Masayuki Suzuki
  • Publication number: 20050117037
    Abstract: An image processing method and device for quick supplement. Defective pixels (Da, Db) are detected by the difference between the imaging light in irradiation and that in nonirradiation in advance. The sound pixels surrounding the defective pixels (Da, Db) are related to the defective pixels (Da, Db) and stored in a supplement list as supplement pixels (R1 to R8, R1 to R16). An average pixel density of information on the supplement pixels (R1 to R8, R1 to R16) is determined referring to the supplement list when an image is displayed, and the average pixel density is indicated as the values of the defective pixels (Da, Db) corresponding to the supplement pixels (R1 to R8, R1 to R 16). If the difference between the imaging light in irradiation and that in nonirradiation is below a predetermined threshold, the pixels (Da, Db) are judged to be defective.
    Type: Application
    Filed: December 2, 2002
    Publication date: June 2, 2005
    Inventors: Keisuke Nakai, Shigeru Sasakura, Masayuki Suzuki
  • Patent number: D563001
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: February 26, 2008
    Assignee: Mazda Motor Corporation
    Inventors: Youichi Sato, Dai Kimura, Yuki Suga, Yasuaki Kikuchi, Keisuke Nakai, Atsunori Mori
  • Patent number: D588506
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: March 17, 2009
    Assignee: Mazda Motor Corporation
    Inventors: Ikuo Maeda, Cho Yong Wook, Ryousuke Nozaki, Ryuji Kumagai, Keisuke Nakai
  • Patent number: D595192
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: June 30, 2009
    Assignee: Mazda Motor Corporation
    Inventors: Kunihiko Kurisu, Akira Tamatani, Kosuke Takahashi, Koji Miyamoto, Masatoshi Miyake, Ryuji Kumagai, Keisuke Nakai, Tomoyuki Suzuki
  • Patent number: D668188
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: October 2, 2012
    Assignee: Mazda Motor Corporation
    Inventors: Atsushi Shudo, Masatoshi Miyake, Yutaka Sukegawa, Keisuke Nakai
  • Patent number: D745723
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: December 15, 2015
    Assignee: Mazda Motor Corporation
    Inventors: Atsushi Yoshida, Tamami Sato, Kota Akagawa, Keisuke Nakai
  • Patent number: D765546
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: September 6, 2016
    Assignee: Mazda Motor Corporation
    Inventors: Eiji Kimoto, Siyoung Song, Kousuke Takahashi, Takeshi Shinohara, Kaname Sawai, Ryousuke Nozaki, Tadashi Ozeki, Ryuji Kumagai, Keisuke Nakai
  • Patent number: D790404
    Type: Grant
    Filed: November 9, 2015
    Date of Patent: June 27, 2017
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Norihito Iwao, Takahiro Matsui, Kazuhisa Noda, Keisuke Nakai
  • Patent number: D845174
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: April 9, 2019
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Norihito Iwao, Ryoma Makino, Takahiro Matsui, Kazuhisa Noda, Keisuke Nakai
  • Patent number: D857937
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: August 27, 2019
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Norihito Iwao, Ryoma Makino, Takahiro Matsui, Kazuhisa Noda, Mitsuo Yoshioka, Keisuke Nakai
  • Patent number: D859705
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: September 10, 2019
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Norihito Iwao, Ryoma Makino, Takahiro Matsui, Kazuhisa Noda, Ryousuke Nozaki, Keisuke Nakai
  • Patent number: D883882
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: May 12, 2020
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Norihito Iwao, Ryoma Makino, Takahiro Matsui, Kazuhisa Noda, Keisuke Nakai