Patents by Inventor Yuji Ohkawa

Yuji Ohkawa 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 SENSOR, METHOD FOR TESTING THE X-RAY SENSOR, AND X-RAY DIAGNOSTIC DEVICE EQUIPPED WITH THE X-RAY SENSOR
    Publication number: 20130223593
    Abstract: An X-ray sensor according to the present invention includes: a light-transmissive substrate (17); a light-transmissive electrode (21) formed on one surface of the light-transmissive substrate (17); and a photoconductive film (18) including a hole injection blocking layer (22), a field buffer layer (23), a hole trap layer (24), a photoconductive sensitive layer (25) having a charge-multiplying function, and an electron injection blocking layer (26), the layers being sequentially provided on the one surface of the light-transmissive substrate (17) having the light-transmissive electrode (21). The field buffer layer (23) is larger in thickness than a layer composed of the light-transmissive electrode (21) and the hole injection blocking layer (22).
    Type: Application
    Filed: November 16, 2011
    Publication date: August 29, 2013
    Applicants: NIPPON HOSO KYOKAI, PANASONIC CORPORATION
    Inventors: Masahiro Jouno, Keisuke Koga, Yuji Ohkawa, Misao Kubota, Kazunori Miyakawa, Kenkichi Tanioka