Patents by Inventor Shigehumi Morishita

Shigehumi Morishita 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).

  • Elastic surface wave device
    Patent number: 3980904
    Abstract: An elastic surface wave device comprises a piezoelectric body and interdigital type electric signal-surface wave conversion conductors formed one at each end portion of one surface of the piezoelectric body. A groove elongated in a surface wave propagation direction is provided in a surface opposite to the surface on which the conversion conductors are formed.
    Type: Grant
    Filed: October 24, 1974
    Date of Patent: September 14, 1976
    Assignee: Tokyo Shibaura Electric Co., Ltd.
    Inventors: Toshihiro Onodera, Shigehumi Morishita