Patents by Inventor Willem Verbeek

Willem Verbeek 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).

  • Method and device for lighting seeds or plants
    Patent number: 4914858
    Abstract: A method for fostering the germination of plant seeds or the cultivation of plant cuttings wherein light-emitting diodes are positioned closely proximate the plant seeds or plant cuttings and energized so as to emit irradiating light on the plant seeds or plant cuttings of a wavelength between 400 and 800 nm. The light-emitting diodes can be energized with continuous or intermittent, high frequency energy.
    Type: Grant
    Filed: September 2, 1988
    Date of Patent: April 10, 1990
    Assignee: Nijssen Light Division B.V.
    Inventors: Cornelis T. M. Nijssen, Otto A. Kuhn, Willem Verbeek