Patents by Inventor Tadashi Asazuma

Tadashi Asazuma 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).

  • Patent number: 5360860
    Abstract: A water-soluble resin emulsion comprising at least two incompatible water-soluble polymers, wherein said incompatible water-soluble polymers are stably compatibilized with each other by emulsion-polymerizing a monomer having a reactive unsaturated group in the presence of said incompatible water-soluble polymers as the protecting colloid. The emulsion is useful for a topcoating, prime-coating, material for a synthetic leather, photosensitive material for the preparation of a color filter, material for silver salt photography, and photosensitive material for screen printing.
    Type: Grant
    Filed: June 26, 1992
    Date of Patent: November 1, 1994
    Assignee: Oji Kako Co., Ltd.
    Inventors: Hiroshi Itoh, Naoki Isobe, Tadashi Asazuma
  • Patent number: 5134047
    Abstract: In a method of manufacturing a color cathode ray tube utilizing an external surface exposure process, a fluorescent slurry to be applied to a panel contains a photosensitive resin composition composed of an aqueous emulsion of polyvinyl compound resin containing a saponified polyvinyl acetate with an addition-condensed photosensitive group as a protective colloid and an aqueous solution of a saponified polyvinyl acetate with an addition-condensed photosensitive group. Accordingly, a resistance of a fluorescent layer formed on the panel against an aqueous solution of hydrogen peroxide is improved, and an anti-fogging performance of the fluorescent layer is also improved.
    Type: Grant
    Filed: April 12, 1990
    Date of Patent: July 28, 1992
    Assignee: Sony Corporation
    Inventors: Koki Inada, Hiroshi Itoh, Hideaki Takazawa, Tadashi Asazuma