Patents by Inventor Petrus J. De Maayer

Petrus J. De Maayer 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).

  • X-Ray film cassette
    Patent number: 4386431
    Abstract: An X-ray film cassette has body and cover parts movable relative to one another between open and closed positions and provided with locking elements, magnetic and counter plates associated with these parts and attractable to one another, at least one reinforcing foil arranged to be brought together with a film between the magnetic and counter plates, wherein the reinforcing foil has a surface arranged to face toward the film and being rough with a roughness of between 10 and 60 microns.
    Type: Grant
    Filed: November 12, 1981
    Date of Patent: May 31, 1983
    Assignee: Agfa-Gevaert AG
    Inventors: Willy K. Van Landeghem, Petrus J. De Maayer, Francois P. Loots, Hendrik A. Pattyn, Walter Bauer, Heinrich Farber, Jurgen Muller, Manfred Schmidt