Patents by Inventor Masanori Moriwaki

Masanori Moriwaki 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).

  • Transparent electrically conductive plastic molded articles
    Patent number: 4734319
    Abstract: A plastic molded article excellent in transparency, antistatic property and abrasion resistance is produced by providing on the surface of a base material comprising a transparent plastic molded article an electrically conductive coat layer comprising 60-80% by weight of an electrically conductive powder mainly composed of tin oxide and 20-40% by weight of a resin component and further providing thereon a topcoat layer comprising 0-50% by weight of an electrically conductive powder mainly composed of tin oxide and 50-100% by weight of a resin component.
    Type: Grant
    Filed: January 20, 1987
    Date of Patent: March 29, 1988
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Toshiki Doi, Masanori Moriwaki, Yukio Yasunori
  • Waste water treatment in the production of methacrylic acid
    Patent number: 4618709
    Abstract: A process for separation of methacrylic acid from a methacrylic acid-containing, gaseous reaction mixture obtained by subjecting methacrolein or a compound which can afford methacrolein under reaction conditions and molecular oxygen to gas phase reaction in the presence of a catalyst for oxidation under the coexistence of an inert gas for dilution which comprises (a) cooling the gaseous reaction mixture from a reactor wherein the gas phase reaction has been effected to separate into condensable components including methacrylic acid, acetic acid and water vapor as a condensed liquor and non-condensable components including methacrolein as a non-condensed gaseous mixture, (b) eliminating contaminating methacrolein from the condensed liquor and (c) contacting the resulting condensed liquor with an organic solvent to extract methacrylic acid, followed by separation into an organic solvent solution including methacrylic acid and an aqueous solution as waste water, characterized in that (1) the inert gas for diluti
    Type: Grant
    Filed: January 30, 1981
    Date of Patent: October 21, 1986
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Masao Sada, Michio Kato, Masami Ayano, Tadashi Abe, Masanori Moriwaki
  • Process for preparing an acrylic or methacrylic acid ester
    Patent number: 4474981
    Abstract: A process for preparing an acrylic or methacrylic acid ester comprising esterifying the acrylic or methacrylic acid with an alcohol in a water-insoluble and non-reactive organic solvent in the presence of an acid catalyst, the volume ratio of the organic solvent phase to an aqueous solution phase of the acid catalyst being as small as 0.1 to 1.0, whereby a reactor is allowed to be small-sized and a conversion of the esterification is kept high. The acrylic or methacrylic acid ester is useful as a starting material of an acrylic resin or acrylic resin coating, an adhesive or the like.
    Type: Grant
    Filed: August 5, 1982
    Date of Patent: October 2, 1984
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Michio Katoh, Tadashi Abe, Masanori Moriwaki