Patents by Inventor Hisashi Tskukamoto

Hisashi Tskukamoto 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).

  • Battery charging system distinguishing primary and secondary batteries
    Patent number: 7274168
    Abstract: A remote battery charging system comprises an identifier (52) for identifying different battery types within a device (78) to a switch (46) for allowing or disallowing charging of the battery (13). The battery charging system is particularly suitable for hearing aids.
    Type: Grant
    Filed: September 18, 2003
    Date of Patent: September 25, 2007
    Assignee: Quallion LLC
    Inventors: Hisashi Tskukamoto, PangHoo Tan