Patents by Inventor Takao Hatanaka

Takao Hatanaka 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).

  • Patent number: 4551367
    Abstract: A packaged photographic product, comprising a composite having a light-sensitive photographic material interposed between protective materials, which composite is further packaged within a barrier packaging material, said barrier packaging material having at least a metal layer provided internally and at least one layer of a polyolefin or a polyolefin derivative prepared by extrusion lamination, and said product also satisfying at least one of the conditions (a) and (b) shown below:condition (a): the surface potential of said barrier packaging material on the side of said protective material having an absolute value of not higher than 75 V;condition (b): the surface specific resistance of said protective material being not higher than 1.times.10.sup.11 .OMEGA. under the condition of the relative humidity of 60%.
    Type: Grant
    Filed: May 2, 1984
    Date of Patent: November 5, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Toshio Nagatani, Norio Chiba, Takao Hatanaka, Toshio Saito