Patents by Inventor Masaaki Matsushima

Masaaki Matsushima 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 recording medium which includes a corrosion resistant film of a mixture of a carbide and a nitride
    Patent number: 4658388
    Abstract: An optical recording medium having a substrate, an optical recording layer formed on the substrate, and at least one film consisting of a carbide and a nitride and formed on the substrate.
    Type: Grant
    Filed: September 24, 1985
    Date of Patent: April 14, 1987
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takahiko Ishiwatari, Hiroyoshi Kishi, Hisaaki Kawade, Masaaki Matsushima, Mitsuharu Sawamura, Kazuoki Honguu
  • Recording medium
    Patent number: 4618537
    Abstract: A recording medium comprising a substrate, a recording layer formed thereupon, and an anticorrosive layer which covers the recording layer and contains a chemical to prevent the corrosion of the recording layer.
    Type: Grant
    Filed: January 24, 1984
    Date of Patent: October 21, 1986
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuhiko Takano, Shigeharu Iijima, Satoshi Yoshihara, Masaaki Matsushima, Hiroyoshi Kishi, Eizo Sasamori
  • Recording medium
    Patent number: 4578322
    Abstract: A recording medium is provided which comprises (a) a first recording layer; (b) a second recording layer provided in contiguity to the first recording layer; and (c) a separation layer for spatially separating the first and second recording layer. The first recording layer has a sufficient film thickness not to permit the recording to be effected on the second recording layer, while the recording operation is performed on the first recording layer, and the recording operation is effected on the second recording layer at positions corresponding to defective portions in the first recording layer.
    Type: Grant
    Filed: June 14, 1985
    Date of Patent: March 25, 1986
    Assignee: Canon Kabushiki Kaisha
    Inventors: Mitsuharu Sawamura, Susumu Ito, Masaaki Matsushima, Hiroyoshi Kishi, Eizo Sasamori, Satoshi Yoshihara, Shigeharu Iijima, Katsuhiko Takano
  • Electrochromic device
    Patent number: 4053209
    Abstract: An electrochromic device for use in a display apparatus which is basically constructed with an electrochromic layer containing therein a metal oxide compound, an auxiliary electrochromic layer containing therein at least one kind of metal compound which contains at least one kind of metal element, wherein the difference in electro-negativity between the metal element in the metal compound and the metal element contained in the metal oxide constituting the electrochromic layer is 0.4 or less, both the electrochromic layer and the auxiliary electrochromic layer being laminated, and a pair of electrodes holding between them the laminated electrochromic layer and auxiliary electrochromic layer, at least one of the pair of electrodes being light transmissive.
    Type: Grant
    Filed: November 26, 1975
    Date of Patent: October 11, 1977
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshitami Hara, Yoshioki Hajimoto, Yoshiaki Shirato, Masaaki Matsushima
  • Reconstituted mica acoustic diaphragm
    Patent number: 4026384
    Abstract: An acoustic diaphragm composed essentially of a flat, cone-like or dome-like reconstituted mica paper of fine scaly mica flakes and an organic polymeric binder impregnated in the mica paper. The diaphragm has a density of 1.3 to 2.3 g/cm.sup.3 and a Young's modulus of 6 .times. 10.sup.10 to 3 .times. 10.sup.12 dyne/cm.sup.2.
    Type: Grant
    Filed: November 24, 1975
    Date of Patent: May 31, 1977
    Assignee: Okabe Mica Co., Ltd.
    Inventors: Kenzabro Yamachika, Ituro Sonoda, Ichimatsu Kishimoto, Masaaki Matsushima