Patents by Inventor Marcel Narzul

Marcel Narzul 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).

  • Process for the production of an ultra-high frequency cavity resonator and cavity resonator obtained by this process
    Patent number: 4578658
    Abstract: The process consists of preshaping the elements of the cavity prior to their assembly, covering the preshaped elements with at least one good electricity-conducting metal coating, positioning the different elements to form the cavity and then fixing all the elements to one another by melting and then cooling the deposited metal covering said cavity elements.
    Type: Grant
    Filed: February 21, 1984
    Date of Patent: March 25, 1986
    Assignee: Thomson-CSF
    Inventors: Jacques Urien, Elie Bressan, Jacques Danguy, Marcel Narzul