Patents by Inventor Irie Masahiro

Irie Masahiro 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).

  • Method of recording and reproducing for optical recording medium
    Patent number: 5281501
    Abstract: Disclosed herein is a recording/reproducing method for an optical recording medium comprising a step of heating a recording layer containing a photochromic material and a polymer which are so combined with each other that a photostationary state attained upon irradiation with light of a specific wavelength is varied with temperatures, and a step of applying the light of a specific wavelength to the heated recording layer for bringing the same into a photostationary state and recording information. In order to reproduce the information, a portion of the recording layer which is in a photostationary state is selectively heated, and reproducing light is applied to reproduce recorded and unrecorded states.
    Type: Grant
    Filed: December 3, 1991
    Date of Patent: January 25, 1994
    Assignees: Masahiro Irie, Sanyo Electric Co., Ltd.
    Inventors: Fumio Tatezono, Irie Masahiro, Toshio Tanuma, Toshio Harada, Koutaro Matsuura