Patents by Inventor Tsunetoshi Asai

Tsunetoshi Asai 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).

  • Materials having a deoxidation function and a method of removing oxygen in sealed containers
    Patent number: 4877664
    Abstract: A sealed container material having a deoxidation function comprises a metallic base material reactive with oxygen and a hydrophilic coating layer of water-soluble polymer such as hydroxyethyl cellulose formed on the surface of the metallic base material. An oxygen- and moisture-permeable coating layer composed of a polymethylpentene resin may further be provided on the hydrophilic coating layer. The material exhibits an excellent oxygen absorbing ability and is thus suited as a material for sealed containers, such as cans, bottles, capsules, etc., for encasing food, drink, chemicals, and medical drugs and storing them over a long period of time without denaturation or deterioration.
    Type: Grant
    Filed: April 21, 1988
    Date of Patent: October 31, 1989
    Assignees: Nippon Steel Corporation, Suntory Limited, Kansai Paint Company, Ltd.
    Inventors: Shigeyoshi Maeda, Tsunetoshi Asai, Hidejiro Asano, Haruyoshi Taguchi
  • Materials having a deoxidation function and a method of removing oxygen in sealed containers
    Patent number: 4740402
    Abstract: A sealed container material having a deoxidation function comprises a metallic base material reactive with oxygen and a hydrophilic coating layer of water-soluble polymer such as hydroxyethyl cellulose formed on the surface of the metallic base material. An oxygen- and moisture-permeable coating layer composed of a silicone resin or an olefin resin may further be provided on the hydrophilic coating layer. The material exhibits an excellent oxygen absorbing ability and is thus suited as a material for sealed containers, such as cans, bottles, capsules, etc., for encasing food, drink, chemicals, and medical drugs and storing them over a long period of time without denaturation or deterioration.
    Type: Grant
    Filed: November 7, 1986
    Date of Patent: April 26, 1988
    Assignees: Nippon Steel Corporation, Suntory Limited, Kansai Paint Co., Ltd.
    Inventors: Shigeyoshi Maeda, Tsunetoshi Asai, Hidejiro Asano, Haruyoshi Taguchi