Patents by Inventor Antao Chen

Antao Chen 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: 9816911
    Abstract: High numerical aperture collection optics for particle analyzers may include an ellipsoidal reflector or an ellipsoidal reflector in combination with a spherical reflector, and may efficiently collect light scattered or emitted by particles in a sample stream and then couple that collected light into a lower numerical aperture portion of the instrument's optical detection system, such as into an optical fiber for example. The reflectors may be integrated with a flow cell through which the sample stream passes, or may be separate components arranged around a flow cell or, in instruments not employing a flow cell, arranged around a sample stream in air. Refractive beam steering optics may allow multiple closely spaced excitation beams to be directed into the sample stream at low angles of incidence. The collection optics and refractive beam steering optics may be employed separately or in combination with each other.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: November 14, 2017
    Assignee: Beckman Coulter, Inc.
    Inventors: Antao Chen, Juan J. Fernandez De Castro, Paul K. Church
  • Publication number: 20160290915
    Abstract: High numerical aperture collection optics for particle analyzers may include an ellipsoidal reflector or an ellipsoidal reflector in combination with a spherical reflector, and may efficiently collect light scattered or emitted by particles in a sample stream and then couple that collected light into a lower numerical aperture portion of the instrument's optical detection system, such as into an optical fiber for example. The reflectors may be integrated with a flow cell through which the sample stream passes, or may be separate components arranged around a flow cell or, in instruments not employing a flow cell, arranged around a sample stream in air. Refractive beam steering optics may allow multiple closely spaced excitation beams to be directed into the sample stream at low angles of incidence. The collection optics and refractive beam steering optics may be employed separately or in combination with each other.
    Type: Application
    Filed: November 14, 2014
    Publication date: October 6, 2016
    Inventors: Antao Chen, Juan J. Fernandez De Castro, Paul K. Church
  • Patent number: 9302392
    Abstract: A control method of a mechanical articulated arm, wherein at least two tilt sensors are arranged in different positions of the articulated arm, comprising: calibrating zero positions of tilt sensors when articulated arm does not have elastic deformation, setting position of tail end of articulated arm as point P and point P? before and after elastic deformation of articulated arm, and selecting point R on the articulated arm; detecting angles of two different positions of the articulated arm with the tilt angles before and after the elastic deformation, obtaining the angle offset ?? of the articulated arm due to the elastic deformation, and calculating the length parameter La and the angle parameter ?a of the articulated arm after deformation based on the lengths of OR and RP?; and controlling the action of the articulated arm according to position parameters Xp? and Yp? (to the point P?) obtained according to length parameter La and angle parameter ?a.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: April 5, 2016
    Assignees: Hunan Sany Intelligent Control Equipment Co., Ltd., Sany Heavy Industry Co., Ltd.
    Inventors: Xiaogang Yi, Xiang Zhou, Antao Chen, Qiulian Deng
  • Patent number: 9295402
    Abstract: The present invention provides methods, software, and systems for assessing a burn injury.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: March 29, 2016
    Assignee: University of Washington Through its Center for Commercialization
    Inventors: Mohammad Hassan Arbab, Pierre D. Mourad, Antao Chen, Trevor C. Dickey, Matthew D. Klein, Dale P. Winebrenner
  • Patent number: 9261456
    Abstract: A method and system for analyzing noisy terahertz spectroscopy data transforms the measured time-dependent data into frequency space, for example, using a discrete Fourier transform, and then transforms the frequency spectrum into wavelet frequency space. The twice-transformed data is analyzed to identify spectroscopic features of the signal, for example, to identify a resonance frequency. The method may be used, for example, in a stand-off detector to identify particular chemicals in a target.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: February 16, 2016
    Assignee: University of Washington through its Center for Commercialization
    Inventors: Mohammad Hassan Arbab, Dale P. Winebrenner, Antao Chen, Eric I. Thorsos
  • Patent number: 8673216
    Abstract: The invention provides devices, systems, and methods for detecting an analyte vapor. Particularly, electronegative analyte vapors, such as those vapors evolving from explosive compounds, are typical analytes detected the devices. The devices operate using a resistivity change mechanism wherein a nanostructured chemiresistive material undergoes a resistivity change in the presence of an analyte vapor. A resistivity change indicates the presence of an analyte.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: March 18, 2014
    Assignee: The University of Washington
    Inventors: Antao Chen, Danling Wang, Qifeng Zhang, Guozhong Cao
  • Patent number: 8565569
    Abstract: Poling structures and methods utilizing an electrostatic field generated from a polar dielectric material, including pyroelectric and ferroelectric materials, to produce electro-optic activity in organic nonlinear optical materials.
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: October 22, 2013
    Assignee: University of Washington through its Center for Commercialization
    Inventors: Alex Kwan-yue Jen, Antao Chen, Su Huang, Jingdong Luo
  • Publication number: 20130197695
    Abstract: A control method of a mechanical articulated arm, wherein at least two tilt sensors are arranged in different positions of the articulated arm, comprising: calibrating zero positions of tilt sensors when articulated arm does not have elastic deformation, setting position of tail end of articulated arm as point P and point P? before and after elastic deformation of articulated arm, and selecting point R on the articulated arm; detecting angles of two different positions of the articulated arm with the tilt angles before and after the elastic deformation, obtaining the angle offset ?? of the articulated arm due to the elastic deformation, and calculating the length parameter La and the angle parameter ?a of the articulated arm after deformation based on the lengths of OR and RP?; and controlling the action of the articulated arm according to position parameters Xp? and Yp? (to the point P?) obtained according to length parameter La and angle parameter ?a.
    Type: Application
    Filed: June 22, 2011
    Publication date: August 1, 2013
    Applicants: SANY HEAVY INDUSTRY CO., LTD., HUNAN SANY INTELLIGENT CONTROL EQUIPMENT CO., LTD.
    Inventors: Xiaogang Yi, Xiang Zhou, Antao Chen, Qiulian Deng
  • Publication number: 20120191371
    Abstract: A method and system for analyzing noisy terahertz spectroscopy data transforms the measured time-dependent data into frequency space, for example, using a discrete Fourier transform, and then transforms the frequency spectrum into wavelet frequency space. The twice-transformed data is analyzed to identify spectroscopic features of the signal, for example, to identify a resonance frequency. The method may be used, for example, in a stand-off detector to identify particular chemicals in a target.
    Type: Application
    Filed: January 25, 2012
    Publication date: July 26, 2012
    Applicant: University of Washington through its Center for Commercialization
    Inventors: Mohammad Hassan Arbab, Dale P. Winebrenner, Antao Chen, Eric I. Thorsos
  • Publication number: 20110151574
    Abstract: The invention provides devices, systems, and methods for detecting an analyte vapor. Particularly, electronegative analyte vapors, such as those vapors evolving from explosive compounds, are typical analytes detected the devices. The devices operate using a resistivity change mechanism wherein a nanostructured chemiresistive material undergoes a resistivity change in the presence of an analyte vapor. A resistivity change indicates the presence of an analyte.
    Type: Application
    Filed: December 3, 2010
    Publication date: June 23, 2011
    Applicant: University of Washington
    Inventors: Antao Chen, Danling Wang, Qifeng Zhang, Guozhong Cao
  • Publication number: 20110091149
    Abstract: Poling structures and methods utilizing an electrostatic field generated from a polar dielectric material, including pyroelectric and ferroelectric materials, to produce electro-optic activity in organic nonlinear optical materials.
    Type: Application
    Filed: October 18, 2010
    Publication date: April 21, 2011
    Applicant: University of Washington Center for Commercialization
    Inventors: Alex Kwan-yue Jen, Antao Chen, Su Huang, Jingdong Luo
  • Publication number: 20030185480
    Abstract: A device package and method of fabrication where the device is bonded to the package housing using a bonding medium. The medium includes a solid compliant material, preferably with pressure sensitive adhesive layers formed on the major surfaces. The bonding medium results in reduced stresses on the device, and is especially suitable for photo-elastic devices such as lithium niobate optical devices.
    Type: Application
    Filed: March 28, 2002
    Publication date: October 2, 2003
    Inventors: Antao Chen, William E. Derbyshire
  • Patent number: 6487341
    Abstract: The invention includes a multi-material structure comprising at least two components through which light is propagated. At least two structure components are of different materials and are joined to one another at an end surface of each either directly or indirectly. The end surfaces are at angles other than normal to the direction of light propagation. The multi-material structure has a polarization dependent loss less than if the components had end surfaces normal to the direction of light propagation. Embodiments of the invention are particularly applicable to a waveguide substrate/fiber capillary interface. Also included is a method of reducing polarization dependent loss between joined components through which light is propagated.
    Type: Grant
    Filed: October 13, 2000
    Date of Patent: November 26, 2002
    Assignee: Agere Systems Guardian Corp
    Inventors: Antao Chen, Detlef B. Gluszynski, Robert W. Smith