Patents by Inventor Jacobus H. Bosschaerts

Jacobus H. Bosschaerts 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).

  • Xerographic copying apparatus
    Patent number: 4519696
    Abstract: A xerographic copying apparatus including a device for monitoring the concentration of toner in a xerographic developer mixture of ferromagnetic particles and non-ferromagnetic toner, said device comprising a measuring induction coil that is mounted close to the developer supply so that its magnetic field traverses a portion of the mass of the developer, and a reference induction coil that is mounted close to the measuring coil, but with its magnetic field prevented from traversing the developer mixture, and suitably closely on a wall of the hopper for the toner supply.
    Type: Grant
    Filed: February 9, 1983
    Date of Patent: May 28, 1985
    Assignee: AGFA-Gevaert N. V.
    Inventors: Jan J. Bruyndonckx, Jacobus H. Bosschaerts