Patents by Inventor Adrianus Heessels

Adrianus Heessels 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).

  • Integrated circuit and method of manufacturing same
    Publication number: 20050275001
    Abstract: The integrated circuit (1) according to the invention comprises a set of cells (10), each of the cells 11, 13, 15, 19) comprises an electrical device (20) with a device parameter whose parameter value is a function of random parametric variations. The set of cells (10) comprises a first subset (12) of identification cells (13) with first random parametric variations, and a second subset (14) of cells (11, 15,19), which are able to generate an identification code by measuring the random differences between the parameter values of the identification cells (13). According to the invention the cells (11, 15, 19) of the second subset (14) have second random parametric variations, which are smaller than the first random parametric variations, thereby making the generation of the identification code relatively easy.
    Type: Application
    Filed: July 1, 2003
    Publication date: December 15, 2005
    Applicant: Koninklijke Philips Electronics N.V.
    Inventor: Adrianus Heessels