Patents by Inventor Shinpei Okayasu

Shinpei Okayasu 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 an electromagnetic radiation-shielding, metallized polyester fiber textile material
    Patent number: 4681591
    Abstract: An improved process for producing an electromagnetic radiation-shielding, metallized polyester fiber textile material comprising the steps of: pre-treating a textile material containing at least 15% by weight of polyester fibers with an aqueous solution of a caustic alkali to an extent that the weight of the polyester fibers is decreased from 10% to 35% based on the original weight of the polyester fibers; activation-treating the pre-treated textile material with a tin (II)-containing compound and with a palladium-containing compounds; and nonelectrolytically plating the activation-treated textile material in a plating mixture containing a compound of an electroconductive metal selected from the group consisting of nickel, copper, cobalt, chromium, and alloys of at least two of the above-mentioned metals to form a metal coating thereon.
    Type: Grant
    Filed: May 22, 1986
    Date of Patent: July 21, 1987
    Assignee: Takase Dyeing & Printing Works, Ltd.
    Inventors: Shinpei Okayasu, Shinichi Uchikoshi, Atsuo Nobatake