Patents by Inventor Shouichi Fukunaga

Shouichi Fukunaga 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).

  • Process for producing a flexible printed base
    Patent number: 5077084
    Abstract: In a process for producing a flexible printed base by directly coating a copper foil with a polyimide precursor, followed by heating, drying and curing, a process affording a flexible printed base having a superior folding endurance and a good heat resistance at a cheap cost is provided, which process comprises carrying out the curing in an inert gas under a tension of 0.02 to 0.2 Kg/cm and at 200.degree. and 450.degree. C.
    Type: Grant
    Filed: February 1, 1990
    Date of Patent: December 31, 1991
    Assignee: Chisso Corporation
    Inventors: Shiro Konotsune, Atsushi Takahashi, Shouichi Fukunaga, Kazutsune Kikuta