Patents by Inventor Pieter M. Vogel

Pieter M. Vogel 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).

  • Aluminum-manganese cathode foil for electrolytic capacitors having controlled amounts of copper and titanium
    Patent number: 4245276
    Abstract: Improved cathode foil of an Al-Mn alloy for electrolytical capacitors with which a higher capacitance value and, in accordance with a further elaboration, a higher impact strength of the foil is obtained. To this end the foil has next to 0.2-2 weight % of Mn a Cu-content between 0.15 and 5.3% and preferably a Ti-content between 0.03 and 0.5%.
    Type: Grant
    Filed: August 4, 1978
    Date of Patent: January 13, 1981
    Assignee: U.S. Philips Corporation
    Inventors: Arend Van Herwijnen, Pieter M. Vogel
  • Aluminum cathode foil for electrolytic capacitors including a copper content
    Patent number: 4240128
    Abstract: Cathode foil for electrolytic capacitors is formed of aluminium having a copper content between 0.15 and 5.7 weight % and a total amount of contaminations of not more than 2 weight %.
    Type: Grant
    Filed: September 26, 1978
    Date of Patent: December 16, 1980
    Assignees: Aluminium Industrie Vaassen B.V., U.S. Philips Corporation
    Inventors: Leendert G. Van Alphen, Justinus W. H. G. Slakhorst, Pieter M. Vogel