Patents by Inventor Mastoshi Hirono

Mastoshi Hirono 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).

  • Optical disk drive
    Patent number: 6633531
    Abstract: An optical disk drive having an optical disk that permits transmission of a laser beam, an optical disk holding mechanism configured to rotatably support the optical disk, a first laser beam irradiation mechanism disposed on one side of the optical disk, causing the first laser beam to be vertically incident on one surface of the optical disk, and a first evanescent optical system disposed on the other side of the optical disk. The first evanescent optical system is configured to receive the first laser beam which emanates from the laser beam irradiation mechanism and passes through the optical disk, and radiate the first evanescent wave to the other surface of the optical disk having at least one recording surface.
    Type: Grant
    Filed: August 10, 2000
    Date of Patent: October 14, 2003
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Mastoshi Hirono, Masayuki Sekimura, Makoto Asakura, Yoriyuki Ishibashi, Takao Ohmi, Yasuo Motegi, Minoru Yonezawa