Patents by Inventor Francois P. von der Weid

Francois P. von der Weid 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).

  • Apparatus for manufacturing elements by means of a hardenable binding agent to which a liquid is added
    Patent number: 4369025
    Abstract: The invention relates to apparatus for manufacturing elements made of a hardenable binding agent, wherein this element is obtained by successive deposits of the dry binding agent in powder form, each deposit being followed by a wetting. The invention is applicable to the production of construction elements, such as plates, tiles, etc.
    Type: Grant
    Filed: June 13, 1980
    Date of Patent: January 18, 1983
    Assignee: EPSI Brevets et Participations S.A.
    Inventor: Francois P. von der Weid