Patents by Inventor Allan R. Cowan

Allan R. Cowan 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).

  • Planar photonic bandgap structures for controlling radiation loss
    Patent number: 6684008
    Abstract: The present planar photonic bandgap structures achieve improved control over radiation losses by employing layered dielectric structures. These structures control radiation losses incurred in connection with planar photonic bandgap structures and waveguides, waveguide bends, waveguide crossings, filters, switches and fiber-coupling structures in which such planar photonic bandgap structures are used.
    Type: Grant
    Filed: August 28, 2001
    Date of Patent: January 27, 2004
    Assignee: The University of British Columbia
    Inventors: Jeff F. Young, Allan R. Cowan, Vighen Pacradouni
  • Planar photonic bandgap structures for controlling radiation loss
    Publication number: 20020036299
    Abstract: The present planar photonic bandgap structures achieve improved control over radiation losses by employing layered dielectric structures. These structures control radiation losses incurred in connection with planar photonic bandgap structures and waveguides, waveguide bends, waveguide crossings, filters, switches and fiber-coupling structures in which such planar photonic bandgap structures are used.
    Type: Application
    Filed: August 28, 2001
    Publication date: March 28, 2002
    Inventors: Jeff F. Young, Allan R. Cowan, Vighen Pacradouni