Patents by Inventor Yong-Le Pan

Yong-Le Pan 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).

  • Method and instrumentation for determining absorption and morphology of individual airborne particles
    Patent number: 7126687
    Abstract: Characterizing individual airborne particles in real time according to their absorption of optical energy at one or more wavelengths. The instrument can measure the two-dimensional angular optical scattering (TAOS) and/or the one-dimensional angular optical scattering (ODAOS) at one or more wavelengths. When two wavelengths are used, one is chosen to be on an absorption peak, the other is off of the absorption peak (preferably in the absorption valley).
    Type: Grant
    Filed: June 19, 2003
    Date of Patent: October 24, 2006
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Steven Clyde Hill, Ronald Gene Pinnick, Yong-Le Pan, Kevin Bruce Aptowicz, Kristan P. Gurton, Richard Kounai Chang
  • Method and instrumentation for measuring fluorescence spectra of individual airborne particles sampled from ambient air
    Patent number: 6947134
    Abstract: A Fluorescence Particle Spectrometer (FPS) performs real-time measurement of the fluorescence spectra of aerosol particles in the size range 1-10 ?m diameter. The FPS has a sufficiently high sample rate (estimated to be a few liters/min) to measure aerosol within buildings (from 1 up to 600 particle fluorescence spectra per minute) at practical rates. A virtual impactor first concentrates aerosol particles, which are then drawn under negative pressure through an aerodynamic focusing nozzle in the inlet of the instrument, through the sample region, providing further concentration. The rate of particle spectra measured by the FPS increases significantly when the particle inlet is within a few meters of some common sources of indoor biological particles.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: September 20, 2005
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Richard Chang, Yong-Le Pan, Ronald Gene Pinnick, Steven Clyde Hill
  • Method and instrumentation for measuring fluorescence spectra of individual airborne particles sampled from ambient air
    Publication number: 20040125371
    Abstract: A Fluorescence Particle Spectrometer (FPS) performs real-time measurement of the fluorescence spectra of aerosol particles in the size range 1-10 &mgr;m diameter. The FPS has a sufficiently high sample rate (estimated to be a few liters/min) to measure aerosol within buildings (from 1 up to 600 particle fluorescence spectra per minute) at practical rates. A virtual impactor first concentrates aerosol particles, which are then drawn under negative pressure through an aerodynamic focusing nozzle in the inlet of the instrument, through the sample region, providing further concentration. The rate of particle spectra measured by the FPS increases significantly when the particle inlet is within a few meters of some common sources of indoor biological particles.
    Type: Application
    Filed: June 19, 2002
    Publication date: July 1, 2004
    Inventors: Richard Chang, Yong-Le Pan, Ronald Gene Pinnick, Steven Clyde Hill
  • Method and instrumentation for determining absorption and morphology of individual airborne particles
    Publication number: 20030223063
    Abstract: Characterizing individual airborne particles in real time according to their absorption of optical energy at one or more wavelengths. The instrument can measure the two-dimensional angular optical scattering (TAOS) and/or the one-dimensional angular optical scattering (ODAOS) at one or more wavelengths. When two wavelengths are used, one is chosen to be on an absorption peak, the other is off of the absorption peak (preferably in the absorption valley).
    Type: Application
    Filed: June 19, 2003
    Publication date: December 4, 2003
    Applicant: U.S. Army Research Laboratory
    Inventors: Steven Clyde Hill, Ronald Gene Pinnick, Yong-Le Pan, Kevin Bruce Aptowicz, Kristan P. Gurton, Richard Kounai Chang