Patents by Inventor James Evanstad

James Evanstad 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).

  • Size segregated aerosol mass concentration measurement with inlet conditioners and multiple detectors
    Patent number: 8534116
    Abstract: A system for measuring size segregated mass concentration of an aerosol. The system includes an electromagnetic radiation source with beam-shaping optics for generation of a beam of electromagnetic radiation, an inlet sample conditioner with adjustable cut-size that selects particles of a specific size range, and an inlet nozzle for passage of an aerosol flow stream. The aerosol flow stream contains particles intersecting the beam of electromagnetic radiation to define an interrogation volume, and scatters the electromagnetic radiation from the interrogation volume. The system also includes a detector for detection of the scattered electromagnetic radiation an integrated signal conditioner coupled to the detector and generating a photometric output, and a processor coupled with the conditioner for conversion of the photometric output and cut-size to a size segregated mass distribution.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: September 17, 2013
    Assignee: PNC Bank, National Association
    Inventors: Xiaoliang Wang, Jugal Agarwal, George J. Chancellor, James Evanstad, Anthony E Hase, Sreenath Avula, James E. Farnsworth, David A Lieder
  • SIZE SEGREGATED AEROSOL MASS CONCENTRATION MEASUREMENT WITH INLET CONDITIONERS AND MULTIPLE DETECTORS
    Publication number: 20120012744
    Abstract: A system for measuring size segregated mass concentration of an aerosol. The system includes an electromagnetic radiation source with beam-shaping optics for generation of a beam of electromagnetic radiation, an inlet sample conditioner with adjustable cut-size that selects particles of a specific size range, and an inlet nozzle for passage of an aerosol flow stream. The aerosol flow stream contains particles intersecting the beam of electromagnetic radiation to define an interrogation volume, and scatters the electromagnetic radiation from the interrogation volume. The system also includes a detector for detection of the scattered electromagnetic radiation an integrated signal conditioner coupled to the detector and generating a photometric output, and a processor coupled with the conditioner for conversion of the photometric output and cut-size to a size segregated mass distribution.
    Type: Application
    Filed: September 23, 2011
    Publication date: January 19, 2012
    Applicant: TSI, INCORPORATED
    Inventors: Xiaoliang Wang, Jugal K. Agarwal, George John Chancellor, James Evanstad, Anthony E. Hase, Sreenath Avula, James E. Farnsworth, David A. Lieder
  • Size segregated aerosol mass concentration measurement with inlet conditioners and multiple detectors
    Patent number: 8047055
    Abstract: A system for measuring size segregated mass concentration of an aerosol. The system includes an electromagnetic radiation source with beam-shaping optics for generation of a beam of electromagnetic radiation, an inlet sample conditioner with adjustable cut-size that selects particles of a specific size range, and an inlet nozzle for passage of an aerosol flow stream. The aerosol flow stream contains particles intersecting the beam of electromagnetic radiation to define an interrogation volume, and scatters the electromagnetic radiation from the interrogation volume. The system also includes a detector for detection of the scattered electromagnetic radiation an integrated signal conditioner coupled to the detector and generating a photometric output, and a processor coupled with the conditioner for conversion of the photometric output and cut-size to a size segregated mass distribution.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: November 1, 2011
    Assignee: TSI, Incorporated
    Inventors: Xiaoliang Wang, Jugal K. Agarwal, George John Chancellor, James Evanstad, Anthony E. Hase, Sreenath Avula, James E. Farnsworth, David A. Lieder
  • SIZE SEGREGATED AEROSOL MASS CONCENTRATION MEASUREMENT WITH INLET CONDITIONERS AND MULTIPLE DETECTORS
    Publication number: 20100288921
    Abstract: A system for measuring size segregated mass concentration of an aerosol. The system includes an electromagnetic radiation source with beam-shaping optics for generation of a beam of electromagnetic radiation, an inlet sample conditioner with adjustable cut-size that selects particles of a specific size range, and an inlet nozzle for passage of an aerosol flow stream. The aerosol flow stream contains particles intersecting the beam of electromagnetic radiation to define an interrogation volume, and scatters the electromagnetic radiation from the interrogation volume. The system also includes a detector for detection of the scattered electromagnetic radiation an integrated signal conditioner coupled to the detector and generating a photometric output, and a processor coupled with the conditioner for conversion of the photometric output and cut-size to a size segregated mass distribution.
    Type: Application
    Filed: February 12, 2010
    Publication date: November 18, 2010
    Inventors: Xiaoliang Wang, Jugal K. Agarwal, George John Chancellor, James Evanstad, Anthony E. Hase, Sreenath Avula, James E. Farnsworth, David A. Lieder