Patents by Inventor Hideki Kenjo

Hideki Kenjo 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).

  • Cleaning system for contact lenses and process for cleaning the same
    Patent number: 4731192
    Abstract: A contact lens cleaning system, process and kit includes an aqueous chlorite solution and a solid component including an agent for accelerating decomposition of chlorite and an oxygen consumption agent. The chlorite decomposes to form free oxygen which removes impurities from a lens to be cleaned. The oxygen consuming agent prevents excess free oxygen from attacking the lens after the impurities have been removed.
    Type: Grant
    Filed: March 20, 1986
    Date of Patent: March 15, 1988
    Assignee: Toray Industries, Inc.
    Inventors: Hideki Kenjo, Teruo Jyono
  • Soft contact composition and method
    Patent number: 4699934
    Abstract: A soft contact lens is provided by: pouring an excess amount of an original solution for producing a soft contact lens into a concave mold; placing a convex mold on said concave mold and overflowing the excess of said original solution to thereby uniformly fill said original solution in a space between said concave mold and said convex mold; gelling said original solution between the two molds to form therebetween a lens having a tensile strength of at least about 0.1 kgf/cm.sup.2 ; immersing said lens and said two molds in a liquid to peel said lens from said molds; and extracting the thus-peeled lens via an extraction treatment with water.
    Type: Grant
    Filed: July 28, 1983
    Date of Patent: October 13, 1987
    Assignee: Toray Industries, Inc.
    Inventors: Shinzo Ohkado, Hideki Kenjo
  • Method of manufacturing shaped article of hydrogel
    Patent number: 4548983
    Abstract: A method for the manufacture of shaped article of hydrogel is provided. This shaped article of hydrogel is obtained by the polymerization in a mold of a mixture comprising:A. an alkylene glycol mono(meth)acrylate or a monomer mixture consisting preponderantly of an alkylene glycol mono(meth)acrylate,B. a polymer synthesized from a component A and possessing a polymerizable double bond in the molecular unit thereof,C. a water-soluble dipolar aprotic solvent, andD. at least one member selected from the group consisting of (a) water-soluble organic acids, (b) surface active agents, and (c) water-soluble organic substances which are poor solvents or non-solvents of the component B, and having the weight ratio of the component A to the component B in the range of 45:55 to 20:80.
    Type: Grant
    Filed: June 21, 1984
    Date of Patent: October 22, 1985
    Assignee: Toray Industries, Inc.
    Inventors: Mitsuru Yokota, Shuji Fujioka, Tsutomu Goshima, Hideki Kenjo, Kazushige Komaki
  • Producing soft contact lenses
    Patent number: 4347198
    Abstract: A soft contact lens is provided by: pouring an excess amount of an original solution for producing a soft contact lens into a concave mold; placing a convex mold on said concave mold and overflowing the excess of said original solution to thereby uniformly fill said original solution in a space between said concave mold and said convex mold; gelling said original solution between the two molds to form therebetween a lens having a tensile strength of at least about 0.1 kgf/cm.sup.2 ; immersing said lens and said two molds in a liquid to peel said lens from said molds; and extracting the thus-peeled lens via an extraction treatment with water.
    Type: Grant
    Filed: September 25, 1980
    Date of Patent: August 31, 1982
    Assignee: Toray Industries, Ltd.
    Inventors: Shinzo Ohkada, Hideki Kenjo
  • Cross-linked n-vinyl pyrrolidone polymer composition suitable for contact lenses
    Patent number: 3949021
    Abstract: Contact lens having high water content make from polymer of cross-link-polymerized N-vinyl pyrrolidone in the presence of water-insoluble polymer has excellent properties suitable for continuous wearing for a long period of time.
    Type: Grant
    Filed: August 7, 1974
    Date of Patent: April 6, 1976
    Assignee: Toray Industries, Inc.
    Inventors: Tetsunosuke Kunitomo, Hideki Kenjo, Syoji Nagaoka, Takeshi Yoshioka, Hiroshi Tanzawa