Patents by Inventor Hisataka Shoji

Hisataka Shoji 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).

  • Radiation shielding composite sheet material
    Patent number: 4619963
    Abstract: A radiation shielding composite sheet material contains lead fibers of more than 99% purity and containing 50 to 500 ppm tin. The fibers are of mean length of 0.5 to 1.3 mm and are imbedded in a synthetic resin, such that the composite sheet has a specific gravity greater than 4.0.
    Type: Grant
    Filed: July 2, 1984
    Date of Patent: October 28, 1986
    Assignee: Toray Industries, Inc.
    Inventors: Hisataka Shoji, Shigehiro Ouchi
  • Methods for manufacturing lead fiber and radiation shielding material using the same
    Patent number: 4485838
    Abstract: A method of manufacturing lead fibers and radiation shielding materials using the lead fibers so manufactured as disclosed. The fibers contain 50 to 500 ppm of tin and preferably are below 60 microns in diameter. The fibers are produced by melt spinning through a spinneret. Radiation shielding materials can be made by dispersing the fibers homogeneously into a resin, which may be formed into sheets or which may be processed into woven, knitted or spin-bonded fabrics.
    Type: Grant
    Filed: February 24, 1983
    Date of Patent: December 4, 1984
    Assignee: Toray Industries, Inc.
    Inventors: Hisataka Shoji, Shigehiro Ouchi