Patents by Inventor Luo Cheng

Luo Cheng 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).

  • Publication number: 20170135852
    Abstract: This disclosure provides an ophthalmic thermal therapeutic apparatus including: a handheld housing; and a thermal therapeutic apparatus provided on the housing, the thermal therapeutic apparatus including: a therapeutic member to be brought into contact with an affected area; an electrothermal conversion circuit including an electrothermal conversion element configured to generate temperature change in the therapeutic member; a temperature control apparatus configured to hold a temperature of the therapeutic member to be a desired value; a power switch; and a power source, wherein a surface of an extremity portion of the therapeutic member to be brought into contact with the affected area is formed of a convex curve having a minimum radius of curvature from 2 mm to 8 mm, preferably from 4 mm to 6 mm.
    Type: Application
    Filed: November 13, 2015
    Publication date: May 18, 2017
    Inventor: Luo CHENG
  • Patent number: 8643920
    Abstract: A computer-implemented method for gray balance calibration in an image printing system is provided. The method includes printing, using a print engine, a reference test pattern consisting essentially of black marking medium; sensing, using a sensor, the reference test pattern to obtain a reference image data, the reference image data being a function of the black marking medium; printing, using the print engine, a second test pattern comprising a combination of marking mediums of different colors, other than the color black, available on the image printing system to simulate the black marking medium; sensing, using the sensor, the second test pattern to obtain a second image data, the second image data being a function of the combination of marking mediums; and determining a difference between the reference image data and the second image data to obtain a correction offset for gray balance calibration in the image printing system.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: February 4, 2014
    Assignee: Xerox Corporation
    Inventors: James B. Campbell, Luo Cheng
  • Publication number: 20120327476
    Abstract: A computer-implemented method for gray balance calibration in an image printing system is provided. The method includes printing, using a print engine, a reference test pattern consisting essentially of black marking medium; sensing, using a sensor, the reference test pattern to obtain a reference image data, the reference image data being a function of the black marking medium; printing, using the print engine, a second test pattern comprising a combination of marking mediums of different colors, other than the color black, available on the image printing system to simulate the black marking medium; sensing, using the sensor, the second test pattern to obtain a second image data, the second image data being a function of the combination of marking mediums; and determining a difference between the reference image data and the second image data to obtain a correction offset for gray balance calibration in the image printing system.
    Type: Application
    Filed: June 23, 2011
    Publication date: December 27, 2012
    Applicant: XEROX CORPORATION
    Inventors: James B. Campbell, Luo Cheng
  • Patent number: 8300266
    Abstract: A method evaluates image quality in an ink printing system and generates data values for altering the operation of the ink printing system. The method includes generating an ink image on an ink image receiving member that corresponds to a digital image stored in the ink printing system, generating a scanned image signal corresponding to the ink image, generating firing signal waveform adjustments and image data adjustments with reference to the scanned image signal corresponding to the ink image, and operating a printhead in an ink imaging system with reference to the firing signal waveform adjustments and the image data adjustments.
    Type: Grant
    Filed: March 12, 2009
    Date of Patent: October 30, 2012
    Assignee: Xerox Corporation
    Inventors: Andrew S. Yeh, Bhaskar T. Ramakrishnan, Kelly D. Sims, Katie Maria Teslow, Luo Cheng, George Laurens Taylor, John Alan Durbin, Ernest I. Esplin, Howard A. Mizes, Joel Chan, Ngoc-Diep Thi Nguyen, Susan J. Zoltner, Yeqing Zhang, Lisa Schmidt, Kenneth R. Chamberlain, Matthew Hudson Dixon, Steven Van Cleve Korol, James B. Campbell, Russell J. Watt
  • Patent number: 7980650
    Abstract: A system removes a light sensor artifact from a light sensor in a printer that is used to obtain reflectance measurements from test patterns printed on an image substrate.
    Type: Grant
    Filed: August 8, 2007
    Date of Patent: July 19, 2011
    Assignee: Xerox Corporation
    Inventors: Yeqing Zhang, Howard A. Mizes, Luo Cheng
  • Publication number: 20100232652
    Abstract: A method evaluates image quality in an ink printing system and generates data values for altering the operation of the ink printing system. The method includes generating an ink image on an ink image receiving member that corresponds to a digital image stored in the ink printing system, generating a scanned image signal corresponding to the ink image, generating firing signal waveform adjustments and image data adjustments with reference to the scanned image signal corresponding to the ink image, and operating a printhead in an ink imaging system with reference to the firing signal waveform adjustments and the image data adjustments.
    Type: Application
    Filed: March 12, 2009
    Publication date: September 16, 2010
    Applicant: Xerox Corporation
    Inventors: Andrew S. Yeh, Bhaskar T. Ramakrishnan, Kelly D. Sims, Katie Maria Teslow, Luo Cheng, George Laurens Taylor, John Alan Durbin, Ernest I. Esplin, Howard A. Mizes, Joel Chan, Ngoc-Diep Thi Nguyen, Susan J. Zoltner, Yeqing Zhang, Lisa Schmidt, Kenneth R. Chamberlain, Matthew Hudson Dixon, Steven Van Cleve Korol, James B. Campbell, Russell J. Watt
  • Publication number: 20090040261
    Abstract: A system removes a light sensor artifact from a light sensor in a printer that is used to obtain reflectance measurements from test patterns printed on an image substrate.
    Type: Application
    Filed: August 8, 2007
    Publication date: February 12, 2009
    Applicant: Xerox Corporation
    Inventors: Yeqing Zhang, Howard A. Mizes, Luo Cheng
  • Patent number: 7022800
    Abstract: A moisture curable composition capable of cure to an elastomeric body, comprising a polymeric material having not less than two hydroxyl or hydrolyzable groups an alkoxysilane curative and a catalyst comprising: a mixture and/or reaction product of a compound (i) M[OR]4 and compound (ii) M[OR?]x[Z]z, wherein M represents a metal having a valency of 4 selected from Group IVB of the Periodic Table, preferably titanium or zirconium.
    Type: Grant
    Filed: January 4, 2001
    Date of Patent: April 4, 2006
    Assignee: Dow Corning S.A.
    Inventors: Mamoru Tachikawa, Toshio Saruyama, Kazutoshi Okabe, Hiroshi Adachi, Francois De Buyl, Luo Cheng Zhang
  • Publication number: 20040214965
    Abstract: A moisture curable composition capable of cure to an elastomeric body, comprising a polymeric material having not less than two hydroxyl or hydrolysable groups an alkoxysilane curative and a catalyst comprising:
    Type: Application
    Filed: October 3, 2002
    Publication date: October 28, 2004
    Inventors: Mamoru De Tachikawa, Toshio Saruyama, Kazutoshi Okabe, Hiroshi Adachi, Francois De Buyl, Luo Cheng Zhang
  • Patent number: 6161441
    Abstract: An apparatus that individualizes fibers within a feed stream without breaking the fibers. A first stage, having first pinch rollers, receives the feed stream and provides it to a second stage. The second stage receives the feed stream from the first stage, and provides a thinned stream to a third stage. Second stage apron belts draw the feed stream under tension from the first stage into the second stage. Second pinch rollers draw the feed stream under tension from the second stage apron belts and provide the thinned stream to the third stage. The third stage receives the thinned stream from the second stage and provides individualized fibers. Third stage apron belts draw the thinned stream under tension from the second stage into the third stage. Third pinch rollers draw the thinned stream under tension from the third stage apron belts and provide the individualized fibers.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: December 19, 2000
    Assignee: Zellweger Uster, Inc.
    Inventors: Hossein M. Ghorashi, Joseph H. Mansfield, Luo Cheng
  • Patent number: 6052182
    Abstract: A fiber quality monitoring apparatus is constructed with a sample window for viewing a fiber sample. As the fiber sample passes the sample window, a bulb is strobed to produce a light pulse that is directed toward and reflected by the fiber sample. When the light pulse reaches a desired intensity, a first photo diode generates a synchronization signal. A second photo diode detects reflected light with a wavelength between about 500 nanometers and about 600 nanometers and produces a reflection signal. A third photo diode detects reflected light with a wavelength between about 430 nanometers and about 530 nanometers and produces a color signal. A charge coupled device camera is positioned to receive the reflected light pulse. The charge coupled device camera has an array of pixels which receive the reflected light pulse.
    Type: Grant
    Filed: October 28, 1997
    Date of Patent: April 18, 2000
    Assignee: Zellweger Uster, Inc.
    Inventors: Glenn E. Irick, Sr., Luo Cheng, Youe-Tsyr Chu, Mark A. Overbay, Hossein M. Ghorashi, Michael E. Galyon, Gordon F. Williams
  • Patent number: 6040905
    Abstract: A fiber classing device having a sample window for viewing a fiber sample. A light source provides light that is directed toward and reflected by the fiber sample, producing reflected light. A photo sensitive detector is positioned to receive the reflected light, and it detects lightness, redness, and yellowness of the fiber sample. Processing means assign a preliminary grade to the fiber sample based at least in part on the lightness and yellowness of the fiber sample. The processing means also selectively adjust the preliminary grade to a final grade based at least in part on the redness of the fiber sample. The photo sensitive detector has one or more of a spectrometer, a camera, or a set of three photo diodes. A first photo diode detects light with a wavelength of between about 505 nanometers and about 605 nanometers, corresponding to the lightness of the fiber sample.
    Type: Grant
    Filed: August 5, 1998
    Date of Patent: March 21, 2000
    Assignee: Zellweger Uster, Inc.
    Inventors: Luo Cheng, Glenn E. Irick, Sr., Youe-Tsyr Chu, Hossein M. Ghorashi, Michael E. Galyon, Mark A. Overbay
  • Patent number: D822841
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: July 10, 2018
    Assignee: HUNTKEY JAPAN INC.
    Inventor: Luo Cheng