Patents by Inventor Spencer Franklin McElwain

Spencer Franklin McElwain 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).

  • Patent number: 11879828
    Abstract: A flow cytometer of a blood analyzer including a transverse-electric (TE) laser diode, a flow cell, a quarter wave plate (QWP), a plurality of lenses, and a side scatter detector. The TE laser diode is configured to output a laser beam along an optical axis and has a fast axis full width at half maximum (FWHM) divergence of from about 16 degrees to about 25 degrees. The QWP is disposed along the optical axis between the TE laser diode and the flow cell and configured to circularly polarize the laser beam. The plurality of lenses is disposed between the TE laser diode and the flow cell and configured to focus the laser beam at the flow cell.
    Type: Grant
    Filed: December 21, 2022
    Date of Patent: January 23, 2024
    Assignee: IDEXX LABORATORIES INC.
    Inventors: Garland Christian Misener, Michael Ryan Moon, Spencer Franklin McElwain
  • Publication number: 20230305262
    Abstract: A flow cytometer, laser optics assembly thereof, and methods of assembling the same are provided. The flow cytometer is capable of yielding consistent and accurate results despite exposure to adverse environmental conditions such as, for example, temperature changes within a relatively wide temperature range and/or a relatively large amount of random-axis mechanical vibration. The flow cytometer of the present disclosure is additionally or alternatively relatively insensitive to real or apparent core stream shifts, employs a slowly converging beam along the axis perpendicular to core stream flow, and provides the ability to precisely measure time-of-flight.
    Type: Application
    Filed: May 30, 2023
    Publication date: September 28, 2023
    Inventors: Garland Christian Misener, Michael Ryan Moon, Spencer Franklin McElwain, Alan Papale
  • Patent number: 11662542
    Abstract: A flow cytometer, laser optics assembly thereof, and methods of assembling the same are provided. The flow cytometer is capable of yielding consistent and accurate results despite exposure to adverse environmental conditions such as, for example, temperature changes within a relatively wide temperature range and/or a relatively large amount of random-axis mechanical vibration. The flow cytometer of the present disclosure is additionally or alternatively relatively insensitive to real or apparent core stream shifts, employs a slowly converging beam along the axis perpendicular to core stream flow, and provides the ability to precisely measure time-of-flight.
    Type: Grant
    Filed: January 12, 2021
    Date of Patent: May 30, 2023
    Assignee: IDEXX LABORATORIES, INC.
    Inventors: Garland Christian Misener, Michael Ryan Moon, Spencer Franklin McElwain, Alan Papale
  • Publication number: 20230124317
    Abstract: A flow cytometer of a blood analyzer including a transverse-electric (TE) laser diode, a flow cell, a quarter wave plate (QWP), a plurality of lenses, and a side scatter detector. The TE laser diode is configured to output a laser beam along an optical axis and has a fast axis full width at half maximum (FWHM) divergence of from about 16 degrees to about 25 degrees. The QWP is disposed along the optical axis between the TE laser diode and the flow cell and configured to circularly polarize the laser beam. The plurality of lenses is disposed between the TE laser diode and the flow cell and configured to focus the laser beam at the flow cell.
    Type: Application
    Filed: December 21, 2022
    Publication date: April 20, 2023
    Inventors: Garland Christian Misener, Michael Ryan Moon, Spencer Franklin McElwain
  • Patent number: 11543342
    Abstract: A flow cytometer of a blood analyzer including a transverse-electric (TE) laser diode, a flow cell, a quarter wave plate (QWP), a plurality of lenses, and a side scatter detector. The TE laser diode is configured to output a laser beam along an optical axis and has a fast axis full width at half maximum (FWHM) divergence of from about 16 degrees to about 25 degrees. The QWP is disposed along the optical axis between the TE laser diode and the flow cell and configured to circularly polarize the laser beam. The plurality of lenses is disposed between the TE laser diode and the flow cell and configured to focus the laser beam at the flow cell.
    Type: Grant
    Filed: June 15, 2021
    Date of Patent: January 3, 2023
    Assignee: IDEXX Laboratories, Inc.
    Inventors: Garland Christian Misener, Michael Ryan Moon, Spencer Franklin McElwain
  • Publication number: 20210396646
    Abstract: A flow cytometer of a blood analyzer including a transverse-electric (TE) laser diode, a flow cell, a quarter wave plate (QWP), a plurality of lenses, and a side scatter detector. The TE laser diode is configured to output a laser beam along an optical axis and has a fast axis full width at half maximum (FWHM) divergence of from about 16 degrees to about 25 degrees. The QWP is disposed along the optical axis between the TE laser diode and the flow cell and configured to circularly polarize the laser beam. The plurality of lenses is disposed between the TE laser diode and the flow cell and configured to focus the laser beam at the flow cell.
    Type: Application
    Filed: June 15, 2021
    Publication date: December 23, 2021
    Inventors: Garland Christian Misener, Michael Ryan Moon, Spencer Franklin McElwain
  • Publication number: 20210132322
    Abstract: A flow cytometer, laser optics assembly thereof, and methods of assembling the same are provided. The flow cytometer is capable of yielding consistent and accurate results despite exposure to adverse environmental conditions such as, for example, temperature changes within a relatively wide temperature range and/or a relatively large amount of random-axis mechanical vibration. The flow cytometer of the present disclosure is additionally or alternatively relatively insensitive to real or apparent core stream shifts, employs a slowly converging beam along the axis perpendicular to core stream flow, and provides the ability to precisely measure time-of-flight.
    Type: Application
    Filed: January 12, 2021
    Publication date: May 6, 2021
    Inventors: Garland Christian Misener, Michael Ryan Moon, Spencer Franklin McElwain, Alan Papale
  • Patent number: 10914913
    Abstract: A flow cytometer, laser optics assembly thereof, and methods of assembling the same are provided. The flow cytometer is capable of yielding consistent and accurate results despite exposure to adverse environmental conditions such as, for example, temperature changes within a relatively wide temperature range and/or a relatively large amount of random-axis mechanical vibration. The flow cytometer of the present disclosure is additionally or alternatively relatively insensitive to real or apparent core stream shifts, employs a slowly converging beam along the axis perpendicular to core stream flow, and provides the ability to precisely measure time-of-flight.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: February 9, 2021
    Assignee: IDEXX LABORATORIES, INC.
    Inventors: Garland Christian Misener, Michael Ryan Moon, Spencer Franklin McElwain, Alan Papale
  • Publication number: 20190302391
    Abstract: A flow cytometer, laser optics assembly thereof, and methods of assembling the same are provided. The flow cytometer is capable of yielding consistent and accurate results despite exposure to adverse environmental conditions such as, for example, temperature changes within a relatively wide temperature range and/or a relatively large amount of random-axis mechanical vibration. The flow cytometer of the present disclosure is additionally or alternatively relatively insensitive to real or apparent core stream shifts, employs a slowly converging beam along the axis perpendicular to core stream flow, and provides the ability to precisely measure time-of-flight.
    Type: Application
    Filed: March 28, 2019
    Publication date: October 3, 2019
    Inventors: Garland Christian Misener, Michael Ryan Moon, Spencer Franklin McElwain, Alan Papale