Patents by Inventor Shigeru Sasakura

Shigeru Sasakura 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