Patents by Inventor Katsuhiko Miyagawa

Katsuhiko Miyagawa 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).

  • Thermoluminescent type radiation dosimeter readout apparatus
    Patent number: 4105918
    Abstract: An apparatus wherein a thermoluminescent type radiation dosimeter is heated and thermoluminant rays emitted from the dosimeter are measured. It is constructed in such manner that to perform the measurement a personal identification card must be inserted to the apparatus. The mark on the dosimeter and the mark on the identification card are collated, and only when they coincide with each other is the measurement performed.
    Type: Grant
    Filed: September 28, 1976
    Date of Patent: August 8, 1978
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Katsuhiko Miyagawa, Hidenori Kunishige, Hirotaka Otsuka, Fusafumi Nakao
  • Thermoluminescent dosimeter readout instrument
    Patent number: 4091284
    Abstract: A readout instrument comprising a heating device such as a multi-nozzle hot air blower for individually heating a plurality of thermoluminescence dosimeter elements, a photoelectric transducer, an optical guide for efficiently condensing the luminescence ray on the photosensitive face of the transducer, and a thermal radiation shield plate with slits in the same number as the dosimeter elements to minimize errors in the readout attributable to heat radiation from heated bodies such as components of the heating device.
    Type: Grant
    Filed: September 23, 1976
    Date of Patent: May 23, 1978
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Terumasa Yamamoto, Katsuhiko Miyagawa, Hidenori Kunishige, Fusafumi Nakao