Patents by Inventor Gerrit E. Zaaijer

Gerrit E. Zaaijer 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).

  • Control circuit and data transmission device provided with such a circuit
    Patent number: 5262885
    Abstract: A control circuit comprising a thyristor and a feedback circuit formed by an inductance and a generator for producing electrical energy in response to a luminous event. The feedback circuit controls the conducting or cut-off state of the thyristor by the fact that a trigger-gate of the thyristor is connected to a terminal of the generator having a polarity cutting off the thyristor when the generator is illuminated. The thyristor is switched on in response to an energy stored in the inductance, which energy is caused by a sudden discontinuity of the luminous event.
    Type: Grant
    Filed: April 17, 1990
    Date of Patent: November 16, 1993
    Assignee: U.S. Philips Corporation
    Inventors: Michel Steers, Jean-Pierre Hazan, Giles Delmas, Michel Courdille, Gerrit E. Zaaijer