Patents by Inventor Georges Dube

Georges Dube 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 stabilizing in time a piezoelectric resonator
    Patent number: 4397884
    Abstract: The invention relates to piezoelectric resonators formed from a block of a crystalline material. During finishing of such resonators, some of the faces thereof, the distances between which define the frequency, are subjected to abrasive operations which alter the surface state of the network, with surface cracks, dislocations and fragmentations. The invention provides a process for implanting light ions on these faces (He, Li, Be) after finishing, by creating therein a layer of vitreous protection silica from the crystallized quartz.
    Type: Grant
    Filed: November 19, 1981
    Date of Patent: August 9, 1983
    Assignee: Compagnie d'Electronique et de Piezo-Electricite
    Inventor: Georges Dube