Patents by Inventor Zenzaburo Shibata

Zenzaburo Shibata 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).

  • Binder loose leaf
    Patent number: 4023292
    Abstract: A binder loose leaf for mounting photographs or the like. It is made up of a flat base having a pressure-sensitive non-drying adhesive composition coated over one of its face and an air-protection film applied over the adhesive composition. This film can easily be removed by light rubbing friction to expose the adhesive composition when it is desired to fix a photograph or the like on the loose leaf.
    Type: Grant
    Filed: September 1, 1976
    Date of Patent: May 17, 1977
    Inventors: Ryoji Shibata, Zenzaburo Shibata