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).
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Publication number: 20170135852Abstract: 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: ApplicationFiled: November 13, 2015Publication date: May 18, 2017Inventor: Luo CHENG
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Patent number: 8643920Abstract: 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: GrantFiled: June 23, 2011Date of Patent: February 4, 2014Assignee: Xerox CorporationInventors: James B. Campbell, Luo Cheng
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Publication number: 20120327476Abstract: 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: ApplicationFiled: June 23, 2011Publication date: December 27, 2012Applicant: XEROX CORPORATIONInventors: James B. Campbell, Luo Cheng
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Patent number: 8300266Abstract: 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: GrantFiled: March 12, 2009Date of Patent: October 30, 2012Assignee: Xerox CorporationInventors: 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
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Patent number: 7980650Abstract: 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: GrantFiled: August 8, 2007Date of Patent: July 19, 2011Assignee: Xerox CorporationInventors: Yeqing Zhang, Howard A. Mizes, Luo Cheng
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Publication number: 20100232652Abstract: 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: ApplicationFiled: March 12, 2009Publication date: September 16, 2010Applicant: Xerox CorporationInventors: 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
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Publication number: 20090040261Abstract: 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: ApplicationFiled: August 8, 2007Publication date: February 12, 2009Applicant: Xerox CorporationInventors: Yeqing Zhang, Howard A. Mizes, Luo Cheng
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Patent number: 7022800Abstract: 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: GrantFiled: January 4, 2001Date of Patent: April 4, 2006Assignee: Dow Corning S.A.Inventors: Mamoru Tachikawa, Toshio Saruyama, Kazutoshi Okabe, Hiroshi Adachi, Francois De Buyl, Luo Cheng Zhang
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Publication number: 20040214965Abstract: 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: ApplicationFiled: October 3, 2002Publication date: October 28, 2004Inventors: Mamoru De Tachikawa, Toshio Saruyama, Kazutoshi Okabe, Hiroshi Adachi, Francois De Buyl, Luo Cheng Zhang
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Patent number: 6161441Abstract: 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: GrantFiled: December 23, 1997Date of Patent: December 19, 2000Assignee: Zellweger Uster, Inc.Inventors: Hossein M. Ghorashi, Joseph H. Mansfield, Luo Cheng
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Patent number: 6052182Abstract: 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: GrantFiled: October 28, 1997Date of Patent: April 18, 2000Assignee: 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
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Patent number: 6040905Abstract: 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: GrantFiled: August 5, 1998Date of Patent: March 21, 2000Assignee: Zellweger Uster, Inc.Inventors: Luo Cheng, Glenn E. Irick, Sr., Youe-Tsyr Chu, Hossein M. Ghorashi, Michael E. Galyon, Mark A. Overbay
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Patent number: D822841Type: GrantFiled: July 28, 2016Date of Patent: July 10, 2018Assignee: HUNTKEY JAPAN INC.Inventor: Luo Cheng