Patents by Inventor Dirk W. J. Groereveld

Dirk W. J. Groereveld 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).

  • Current source arrangement
    Patent number: 4864215
    Abstract: A current source arrangement in which the equality of a number of current sources (1-8) constituted by transistors is improved in that each of these current sources (1-8) is constituted by a number of transistors which are arranged regularly in a matrix on the surface area of an integrated circuit.
    Type: Grant
    Filed: May 12, 1988
    Date of Patent: September 5, 1989
    Assignee: U.S. Philips Corp.
    Inventors: Hendrikus J. Schouwenaars, Eise C. Dijkmans, Dirk W. J. Groereveld