Patents by Inventor Joel Covey

Joel Covey 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).

  • Dual beam optical nulling interferometric spectrometer
    Patent number: 4999010
    Abstract: A dual beam Fourier transform spectrometer produces two beams from a single infrared (IR) source. The beams are directed through a sample region, with one beam transiting a sample and the other beam transiting a reference cell. The sample and reference beams are then directed to a Michelson interferometer with cube corner retroflectors for optically cancelling the background signal from the separate sample and reference beams and for optically combining the sample and reference beams in an optically accurate and stable manner. The single combined beam, which contains the difference interferogram is directed to a single detector.
    Type: Grant
    Filed: July 31, 1989
    Date of Patent: March 12, 1991
    Assignee: Mattson Instruments, Inc.
    Inventors: David R. Mattson, Joel Covey, Stephen Weibel