Patents by Inventor Yoshimasa Fujigaki

Yoshimasa Fujigaki 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).

  • Organic semiconductor radiation/light sensor and radiation/light detector
    Patent number: 8212141
    Abstract: There is provided a high-sensitivity organic semiconductor radiation/light sensor and a radiation/light detector which can detect rays in real time. In the high-sensitivity organic semiconductor radiation/light sensor, a signal amplification wire 2 is embedded in an organic semiconductor 1. Carriers created by passage of radiation or light are avalanche-amplified by a high electric field generated near the signal amplification wire 2 by means of applying a high voltage to the signal amplification wire 2, thus dramatically improving detection efficiency of rays. Hence, even rays exhibiting low energy loss capability can be detected in real time with high sensitivity.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: July 3, 2012
    Assignees: Niigata University, Japan Carlit Co., Ltd.
    Inventors: Hitoshi Miyata, Yoshimasa Fujigaki, Yoji Yamaguchi, Yoshinori Muto, Masaaki Tamura
  • ORGANIC SEMICONDUCTOR RADIATION/LIGHT SENSOR AND RADIATION/LIGHT DETECTOR
    Publication number: 20090050815
    Abstract: There is provided a high-sensitivity organic semiconductor radiation/light sensor and a radiation/light detector which can detect rays in real time. In the high-sensitivity organic semiconductor radiation/light sensor, a signal amplification wire 2 is embedded in an organic semiconductor 1. Carriers created by passage of radiation or light are avalanche-amplified by a high electric field generated near the signal amplification wire 2 by means of applying a high voltage to the signal amplification wire 2, thus dramatically improving detection efficiency of rays. Hence, even rays exhibiting low energy loss capability can be detected in real time with high sensitivity.
    Type: Application
    Filed: October 20, 2006
    Publication date: February 26, 2009
    Inventors: Hitoshi Miyata, Yoshimasa Fujigaki, Yoji Yamaguchi, Yoshinori Muto, Masaaki Tamura