Patents by Inventor Bungo Hironaka

Bungo Hironaka 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).

  • Paper adhesive applicator with adhesive having pH indicator
    Patent number: 5082386
    Abstract: Disclosed is an aqueous emulsion of tacky acrylic resins packaged in a felt pen type container/applicator for use as a paper adhesive for stationery purposes, which emulsion forms a film of the resin on a sheet of paper when applied thereto by the selective absorption of water by the paper almost instantaneously which film is capable of bonding another sheet of paper to the sheet to which the film is applied with an initial adhesion strength equal to or greater than the strength of the paper.
    Type: Grant
    Filed: January 12, 1990
    Date of Patent: January 21, 1992
    Assignee: Okitsumo Incorporated
    Inventors: Bungo Hironaka, Fumitaka Yoshioka