Patents by Inventor Donald M. Burland

Donald M. Burland 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 for photorefractive two beam coupling
    Patent number: 5361148
    Abstract: The present invention relates to an improved process for producing photorefractive net gain two beam coupling utilizing polymeric materials.
    Type: Grant
    Filed: January 21, 1993
    Date of Patent: November 1, 1994
    Assignee: International Business Machines Corporation
    Inventors: Gary C. Bjorklund, Donald M. Burland, Marcus C. J. M. Donckers, Robert D. Miller, William E. Moerner, Scott M. Silence, Robert J. Twieg, Cecilia A. Walsh
  • Process for optical information storage
    Patent number: 4458345
    Abstract: Information is stored by a process involving the steps of(1) sensitizing a recording medium comprising a two-photon, four-level material by exposing said medium to flood illumination with ultra-violet or visible light, and then(2) exposing the sensitized medium simultaneously to two beams of coplanar laser irradiation intersecting within said recording medium to create a microscopic interference pattern.
    Type: Grant
    Filed: March 31, 1982
    Date of Patent: July 3, 1984
    Assignee: International Business Machines Corporation
    Inventors: Gary C. Bjorklund, Donald M. Burland
  • Holographic recording media for infrared light
    Patent number: 4431259
    Abstract: A gated self-developing, non-bleachable holographic material is disclosed which is useful in the infrared region. The holographic material comprises a polymeric matrix with an .alpha.-diketone compound uniformly dispersed therein.
    Type: Grant
    Filed: October 28, 1981
    Date of Patent: February 14, 1984
    Assignee: International Business Machines Corporation
    Inventors: Gary C. Bjorklund, Christoph R. Brauchle, Donald M. Burland, Heinrich E. Hunziker, Urs P. Wild
  • Process and recording media for continuous wave four-level, two-photon holography
    Patent number: 4339513
    Abstract: A process and recording medium for four-level, two-photon holography are provided. These media are particularly useful for recording holograms using continuous wave lasers. The recording medium is formed by a transport resin containing a tetrazine compound.
    Type: Grant
    Filed: November 20, 1980
    Date of Patent: July 13, 1982
    Assignee: International Business Machines Corporation
    Inventors: David C. Alvarez, Gary C. Bjorklund, Donald M. Burland
  • Frequency selective optical data storage system
    Patent number: 4158890
    Abstract: An optical data storage system that utilizes the frequency dimension to increase the storage capacity. The storage system has a storage material which contains a guest material such as cinnoline, which is dissolved in a host material such as naphthalene. This storage material system exhibits an inhomogeneous absorption line broadening and undergoes a photochemical reaction upon exposure to light.
    Type: Grant
    Filed: December 12, 1977
    Date of Patent: June 19, 1979
    Assignee: International Business Machines Corporation
    Inventor: Donald M. Burland