Patents by Inventor Pierre Grandadam

Pierre Grandadam 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).

  • Electrolytic capacitor including a composite separator between the anode and the cathode thereof
    Patent number: 4480290
    Abstract: The capacitor includes, between an anode and a cathode, a separator formed by at least one porous polymer film and at least one absorbent paper sheet impregnated with an electrolyte, the polymer film being disposed against the anode. The preferred polymer materials are polypropylene and polyester (especially polybutylene terephthalate).
    Type: Grant
    Filed: May 9, 1983
    Date of Patent: October 30, 1984
    Assignee: Les Condensateurs Sic Safco
    Inventors: Jean Constanti, Pierre Grandadam