Patents by Inventor Ullrich Rudolf Pfeiffer

Ullrich Rudolf Pfeiffer 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).

  • Apparatus and methods for constructing antennas using vias as radiating elements formed in a substrate
    Publication number: 20050122265
    Abstract: Antennas are provided which are constructed using one or more conductive via stubs as radiating elements formed in a substrate. The antennas can be integrally packaged with IC chips (e.g., IC transceivers, receivers, transmitters, etc.) to build integrated wireless or RF (radio frequency) communications systems.
    Type: Application
    Filed: December 9, 2003
    Publication date: June 9, 2005
    Applicant: International Business Machines Corporation
    Inventors: Brian Gaucher, Duixian Liu, Ullrich Rudolf Pfeiffer, Thomas Zwick