Patents by Inventor Heihachiro Ebiha

Heihachiro Ebiha 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).

  • Frequency division system
    Patent number: 4244043
    Abstract: A system for performing frequency division of a high frequency signal by intermittent operation of a frequency dividing counter circuit and by a phase lock loop circuit, in which phase lock is periodically achieved with an output of the counter circuit. Phase lock loop circuit is of novel design which provides exact phase lock without cyclic variations from the reference phase.
    Type: Grant
    Filed: March 29, 1979
    Date of Patent: January 6, 1981
    Assignee: Citizen Watch Co., Ltd.
    Inventors: Hiro Fujita, Akira Tsuzuki, Heihachiro Ebiha, Fukuo Sekiya