Patents by Inventor Syunroku Tohyama

Syunroku Tohyama 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).

  • Coated fabric of a polyester fiber and a method for preparation thereof
    Patent number: 5266354
    Abstract: The present invention relates to a coated fabric of a polyester fiber exhibiting no staining caused by migration of a dispersed dye and a method for preparation thereof. The present invention catches a dye migrating in a resin by using fine inorganic particles having dye-absorption capabilities to confine dye molecules in fine pores thereof, and to prevent the surface of another fabric from staining due to dye-migration.
    Type: Grant
    Filed: July 21, 1992
    Date of Patent: November 30, 1993
    Assignee: Toray Industries, Inc.
    Inventors: Syunroku Tohyama, Masami Ikeyama, Ikuko Nakabe
  • Coated fabric of a polyester fiber and a method for preparation thereof
    Patent number: 5154966
    Abstract: The present invention relates to a coated fabric of a polyester fiber exhibiting no staining caused by migration of a dispersed dye and a method for preparation thereof. The present invention catches a dye migrating in a resin by using fine inorganic particles having dye-absorption capabilities to confine dye molecules in fine pores thereof, and to prevent the surface of another fabric from staining due to dye-migration.
    Type: Grant
    Filed: July 31, 1990
    Date of Patent: October 13, 1992
    Assignee: Toray Industries, Inc.
    Inventors: Syunroku Tohyama, Masami Ikeyama, Ikuko Nakabe
  • Method for purifying liquids
    Patent number: 5024767
    Abstract: The present invention relates to a method for purification of liquids. Fur particulars, the present invention relates to a method for purifying more precisely liquids in atomic power related fields, using a mixture of a polymer in which carboxyl groups are grafted onto a polyamide or a polyester as a cation exchanger and an anion exchanger.
    Type: Grant
    Filed: January 3, 1990
    Date of Patent: June 18, 1991
    Assignee: Toray Industries, Inc.
    Inventors: Nami Kubo, Toshio Yoshioka, Kouichi Saito, Syunroku Tohyama