Patents by Inventor Hidemi Fukunaga

Hidemi 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).

  • Lead alloy for lead-acid batteries and process for producing the alloy
    Patent number: 4207097
    Abstract: An alloy consisting predominantly of lead and containing 0.1 to 3.0% by weight of tin, 0.1 to 0.3% by weight of arsenic and 0.01 to 0.1% by weight of aluminum or copper. The alloy may further contain 0.002 to 1.0% by weight of cadmium. The alloy is useful for grids, inter-cell connectors and poles to provide lead-acid batteries less prone to self-discharge and capable of withstanding over discharge.
    Type: Grant
    Filed: December 14, 1978
    Date of Patent: June 10, 1980
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Sadao Fukuda, Hidemi Fukunaga, Hiroshi Kumano