Patents by Inventor Nobuhiro Kataoka

Nobuhiro Kataoka 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).

  • High strength cured cement article and process for manufacturing the same
    Patent number: 4939191
    Abstract: A cured cement article containing therein an organic polymer treated with an isocyanate compound has a high flexural strength and high water resistance. The cured cement can be prepared by impregnating a cured cement article containing therein a water-soluble polymer or a water-dispersible polymer with an isocyanate compound.
    Type: Grant
    Filed: February 17, 1988
    Date of Patent: July 3, 1990
    Assignee: UBE Industries, Ltd.
    Inventors: Nobuhiro Kataoka, Hideaki Igarashi, Masanori Ohshima