Patents by Inventor Masichiro Tatekawa

Masichiro Tatekawa 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).

  • Display device, electronic paper and electronic paper file
    Publication number: 20060092123
    Abstract: The invention comprises a display sheet, a light guide sheet and a light source provided to at least one side of the light guide sheet. And an electronic paper of the invention has a configuration for color display that the display sheet is made up by laminating respective display sheets for red, green and blue colors.
    Type: Application
    Filed: December 1, 2005
    Publication date: May 4, 2006
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Tetsuro Nakamura, Masichiro Tatekawa
  • Display device, electronic paper and electronic paper file
    Patent number: 7023418
    Abstract: The invention comprises a display sheet, a light guide sheet and a light source provided to at least one side of the light guide sheet. And an electronic paper of the invention has a configuration for color display that the display sheet is made up by laminating respective display sheets for red, green and blue colors.
    Type: Grant
    Filed: July 17, 2001
    Date of Patent: April 4, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Tetsuro Nakamura, Masichiro Tatekawa
  • Display device, electronic paper and electronic paper file
    Publication number: 20020054033
    Abstract: The invention comprises a display sheet, a light guide sheet and a light source provided to at least one side of the light guide sheet. And an electronic paper of the invention has a configuration for color display that the display sheet is made up by laminating respective display sheets for red, green and blue colors.
    Type: Application
    Filed: July 17, 2001
    Publication date: May 9, 2002
    Inventors: Tetsuro Nakamura, Masichiro Tatekawa