Patents by Inventor Sadao Fukunaga

Sadao 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).

  • Cross-linked polyethylene insulated cables
    Patent number: 5256482
    Abstract: A cross-linked polyethylene insulated cable which is prepared by extrusion coating a polyethylene composition on a conductor, the polyethylene composition comprising polyethylene, more than 10% to less than 30% by weight of an ethylene-vinyl acetate copolymer having a vinyl acetate (hereinafter referred to as VA) content of about 28% to about 33% by weight, the EVA having an average particle diameter of less than 1.7 .mu.m (average of maximum 5 values), and an organic peroxide, and thereafter cross-linking the thus coated polyethylene composition.
    Type: Grant
    Filed: December 28, 1990
    Date of Patent: October 26, 1993
    Assignee: Sumitomo Electric Industries
    Inventors: Shosuke Yamanouchi, Sadao Fukunaga, Hironaga Matsubara