Patents by Inventor Kazuhiko Shima

Kazuhiko Shima 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).

  • X-ray detector
    Patent number: 7554092
    Abstract: An X-ray detector for detecting X rays includes a semiconductor for generating electric charges therein upon X-ray incidence, and electrodes formed on opposite sides of the semiconductor for application of a predetermined bias voltage. The semiconductor is amorphous selenium (a-Se) doped with a predetermined quantity of an alkali metal.
    Type: Grant
    Filed: April 17, 2003
    Date of Patent: June 30, 2009
    Assignees: Shimadzu Corporation, Shindengen Electric Manufacturing Co., Ltd., Shindengen Sensor Device Co., Ltd.
    Inventors: Kenji Sato, Toshiyuki Sato, Takayuki Nakayama, Yoichiro Shimura, Kazuhiko Shima
  • X-ray detector
    Publication number: 20030223534
    Abstract: An X-ray detector for detecting X rays includes a semiconductor for generating electric charges therein upon X-ray incidence, and electrodes formed on opposite sides of the semiconductor for application of a predetermined bias voltage. The semiconductor is amorphous selenium (a-Se) doped with a predetermined quantity of an alkali metal.
    Type: Application
    Filed: April 17, 2003
    Publication date: December 4, 2003
    Inventors: Kenji Sato, Toshiyuki Sato, Takayuki Nakayama, Yoichiro Shimura, Kazuhiko Shima
  • X-ray detection plate and X-ray detector
    Patent number: 6642534
    Abstract: It is an object of the invention to improve the quality of images obtained by an X-ray detector. A charge transport layer 13 mainly consisted of diantimony trisulfide, an X-ray detection layer 14 mainly consisted of amorphous selenium and a second electrode film 15 are formed in the same order on the surface of a first electrode film 12 provided on a substrate 11. A voltage whose polarity is positive at the first electrode film 12 and negative at the second electrode film 15 is applied, and the surface of the second electrode film 15 is irradiated with an X-ray. Then, carriers generated in the X-ray detection layer 14 are collected by the first and second electrode films.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: November 4, 2003
    Assignees: Shindengen Electric Manufacturing Co., Ltd., Yamanashi Electronics Co., Ltd., Shimadzu Corporation
    Inventors: Kazuhiko Shima, Masahito Sato, Naoki Uchida, Yoichiro Shimura, Kenji Sato, Hidetoshi Kishimoto
  • X-ray detection plate and X-ray detector
    Publication number: 20010032942
    Abstract: It is an object of the invention to improve the quality of images obtained by an X-ray detector.
    Type: Application
    Filed: March 23, 2001
    Publication date: October 25, 2001
    Applicant: SHINDENGEN ELECTRIC MANUFACTURING CO., LTD.
    Inventors: Kazuhiko Shima, Masahito Sato, Naoki Uchida, Yoichiro Shimura, Kenji Sato, Hidetoshi Kishimoto
  • Electrophotographic photoreceptor having silicate with perfluoroalkyl groups in protective layer
    Patent number: 4997738
    Abstract: An electrophotographic photoreceptor comprises a photoconductive layer having a protective layer disposed thereon, said protective layer being formed by dehydrocondensation of the hydrolyzate of a perfluoroalkyl silane coupling agent, or the hydrolyzate of a mixture of a perfluoroalkyl silane coupling agent and a silane coupling agent. The photoreceptor is very useful in that it can exhibit a high performance even in an environment at a higher temperature and at a higher humidity and that it has a high resistance to the abrasion with a great number of sheets being printed and with the cleaning members and that it is capable of preserving a high resolution without any image blurring.
    Type: Grant
    Filed: November 27, 1989
    Date of Patent: March 5, 1991
    Assignees: Shindengen Electric Manufacturing Co., Ltd., Yamanashi Electronics Co., Ltd., Japan Atomic Energy Research Institute
    Inventors: Minoru Kumakura, Mitsuhiro Yoshitome, Masaru Wakatabe, Masahiro Horigome, Kazuhiko Shima