Patents by Inventor Hirohumi Sano

Hirohumi Sano 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).

  • Vinyl alcohol units-containing polymer composite fiber having resistance to hot water and wet heat and process for its production
    Patent number: 5340650
    Abstract: A fiber comprising a vinyl alcohol units-containing polymer, said polymer being modified at the oxygen atoms of its alcoholic hydroxyl groups with a group represented by the following formula I ##STR1## wherein M represents a chelate-forming metal atom and R represents an alkyl group. The fiber has excellent resistance to hot water and wet heat and does not stick, adhere or shrink even when dyed at high temperatures or treated by steam ironing, thus proving to be of markedly high commercial value.
    Type: Grant
    Filed: February 18, 1993
    Date of Patent: August 23, 1994
    Assignee: Kuraray Company Limited
    Inventors: Kiyoshi Hirakawa, Izumi Watadani, Kazuhiko Tanaka, Masao Kawamoto, Takaaki Tanaka, Hirohumi Sano, Hayami Yoshimochi, Masahiro Sato