Patents by Inventor Jean P. Morgand

Jean P. Morgand 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).

  • Electroacoustic transducer with piezoelectric diaphragm
    Patent number: 4692942
    Abstract: The invention relates to electroacoustic transducers and more particularly to microphones in which the conversion of an acoustic vibration into an electric voltage is provided by a piezoelectric diaphragm. The purpose of the invention is to allow transducers to be formed by mass production methods with a minimum of parts for providing the functions of embedment of the diaphragm, connections, screening, acoustic filtering and protection against damp and dust.
    Type: Grant
    Filed: October 23, 1985
    Date of Patent: September 8, 1987
    Assignee: Thomson CSF
    Inventor: Jean P. Morgand