Patents by Inventor David S. Spence

David S. Spence 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).

  • SYSTEMS, APPARATUSES, AND METHODS FOR SAMPLE CYLINDER INSPECTION, PRESSURIZATION, AND SAMPLE DISPOSAL
    Publication number: 20250060288
    Abstract: Systems, apparatuses, and methods for enhancing handling of a sample cylinder may include first, second, and third stations, each configured to receive a sample cylinder containing a material sample. The first station may include a first mounting fixture configured to be attached to the sample cylinder, a viewing glass to facilitate inspection of a portion of the material sample, and a first valve configured to remove a portion of the material sample from the sample cylinder. The second station may include a second mounting fixture and a second valve to provide fluid flow between a source of pressurized gas and the sample cylinder, thereby to pressurize the sample cylinder. The third station may include a third mounting fixture configured to be attached to the sample cylinder and a third valve to provide fluid flow between the sample cylinder and ventilation ductwork or a receptable.
    Type: Application
    Filed: November 4, 2024
    Publication date: February 20, 2025
    Inventors: Alex M. Markins, Heath B. Jones, Nicci R. Triche, John J. Langenfeld, Masaru F. Williams, David S. Spence, Jason M. Chauvin, Gregory D. Bender, IV
  • SYSTEMS, APPARATUSES, AND METHODS FOR SAMPLE CYLINDER INSPECTION, PRESSURIZATION, AND SAMPLE DISPOSAL
    Publication number: 20240377287
    Abstract: Systems, apparatuses, and methods for enhancing handling of a sample cylinder may include first, second, and third stations, each configured to receive a sample cylinder containing a material sample. The first station may include a first mounting fixture configured to be attached to the sample cylinder, a viewing glass to facilitate inspection of a portion of the material sample, and a first valve configured to remove a portion of the material sample from the sample cylinder. The second station may include a second mounting fixture and a second valve to provide fluid flow between a source of pressurized gas and the sample cylinder, thereby to pressurize the sample cylinder. The third station may include a third mounting fixture configured to be attached to the sample cylinder and a third valve to provide fluid flow between the sample cylinder and ventilation ductwork or a receptable.
    Type: Application
    Filed: May 10, 2024
    Publication date: November 14, 2024
    Inventors: Alex M. Markins, Heath B. Jones, Nicci R. Triche, John J. Langenfeld, Masaru F. Williams, David S. Spence, Jason M. Chauvin, Gregory D. Bender, IV
  • Methods and systems to enhance multiple wave mixing process
    Patent number: 7292387
    Abstract: Frequency conversion methods are taught wherein non-collinear phase matching configurations may be implemented in non-linear crystals used in three wave mixing processes such that the frequency conversion efficiency is enhanced through walk-off compensation while also maximizing conversion efficiency. The harmonic conversion techniques are especially applicable to sum frequency process, and in particular to third harmonic generation.
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: November 6, 2007
    Assignee: Spectra-Physics, Inc.
    Inventors: Hanna J. Hoffman, David S. Spence, Alan B. Petersen, James D. Kafka