Patents by Inventor Jean-Paul Ehrbar

Jean-Paul Ehrbar 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).

  • Method of preparation of a substrate made of plastic material for its subsequent metallization
    Patent number: 4165394
    Abstract: Method for pretreating a plastic substrate prior to metallization thereof by electroless metal deposition by applying a brush discharge thereto, the current density of which is higher than 0.5 mA/cm.sup.2, the tension of which being less than the breakdown tension of the substrate and the total charge of energy applied being no higher than 20mC/cm.sup.2 ; the treatment comprising plural short spaced exposures of said substrate to said discharge. Various masking means are employed to provide selectively treated and untreated portions on the substrate.
    Type: Grant
    Filed: February 6, 1978
    Date of Patent: August 21, 1979
    Assignee: Ebauches S.A.
    Inventors: Jean-Paul Ehrbar, Claude Ganguillet