Patents by Inventor Kazu Matsunaga

Kazu Matsunaga 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).

  • Phosphor for cathode ray tube
    Patent number: 5013480
    Abstract: A phosphor for a chathode ray tube obtained by firing a tervalent europium-activated yttrium oxide of the formula Y.sub.2 O.sub.3 :Eu containing at least one member selected from the group consisting of barium fluoride and magnesium fluoride.
    Type: Grant
    Filed: May 21, 1986
    Date of Patent: May 7, 1991
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Kazu Matsunaga, Hiroshi Okuda, Kenzo Awazu, deceased
  • Phosphor
    Patent number: 4764301
    Abstract: A phosphor excellent in its temperature-versus-luminance characteristics, which is represented by the following formula:(La.sub.1-x-y Ce.sub.x Tb.sub.y) mBO.sub.3.nPO.sub.4(where: 0.15.ltoreq.x.ltoreq.0.45; 0.1.ltoreq.y.ltoreq.0.2; and 0.01.ltoreq.m/(m+n).ltoreq.0.045).
    Type: Grant
    Filed: February 25, 1987
    Date of Patent: August 16, 1988
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Kenzo Awazu, deceased, Kazu Matsunaga, Noritsuna Hashimoto
  • Phosphor
    Patent number: 4350604
    Abstract: A phosphor having a matrix formulation of Li(Al,Ga)O.sub.2 having an atomic ratio of Al to Ga ranging from 75:25 to 5:95, wherein 0.3 to 1.3 atomic percent of Fe.sup.3+ ions are additionally incorporated in the matrix as an active component and Li is present in substantially a 1:1 stoichiometric ratio to the total of Al, Ga and Fe. The phosphor so produced is superior to previously disclosed phosphors when used in an optical code reader to read codes from colored paper.
    Type: Grant
    Filed: August 28, 1981
    Date of Patent: September 21, 1982
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Kenzo Awazu, Kazu Matsunaga