Patents by Inventor Mitsuo Senga

Mitsuo Senga 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).

  • Process for producing antistatic polymeric material
    Patent number: 4927915
    Abstract: An antistatic polymeric material having surface electrical resistivity of smaller than 10.sup.10 .OMEGA./.quadrature. order and/or half life time of shorter than 40 seconds can be obtained by heat-treating at 60-140.degree. C. for 2-60 minutes a polymeric material in a state moistened with an aqueous solution containing 0.5-5% by weight of stannic chloride.
    Type: Grant
    Filed: October 6, 1988
    Date of Patent: May 22, 1990
    Assignee: Mitsubishi Rayon Company, Ltd.
    Inventors: Saburo Hiraoka, Shinji Hama, Mitsuo Senga
  • Method for giving electric conductivity to molded polymer article
    Patent number: 4784910
    Abstract: A method for giving high and durable electric conductivity to molded polymer articles, which comprises heat-treatment of the articles in an aqueous solution containing a copper salt, a reducing sulfur compound, and a water-soluble basic salt of nitrogen-containing organic compound having at least 12 carbon atoms.
    Type: Grant
    Filed: July 10, 1986
    Date of Patent: November 15, 1988
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Shoichi Nagai, Saburo Hiraoka, Mitsuo Senga, Shinji Hama
  • Process for producing lightweight calcium silicate articles
    Patent number: 4659386
    Abstract: A process for producing steam-cured lightweight calcium silicate articles superior in productivity, homogeneity, and mechanical strength by using a powdery siliceous material, powdery calcareous material, and cellulose pulp as main raw materials, which process comprises mixing short acrylic fibers of 1 to 10 mm in filament length to which an organic silicon compound has adhered, into a slurried mixture of said raw materials.
    Type: Grant
    Filed: February 6, 1986
    Date of Patent: April 21, 1987
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Shoichi Nagai, Saburo Hiraoka, Shinji Hama, Mitsuo Senga