Patents by Inventor Yeung Yu

Yeung Yu 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: 11868018
    Abstract: Disclosed are an electrochromic element, device, and product, and a manufacturing method therefor. The electrochromic device (7) comprises: an electrochromic yarn (6), an ion storage yarn (18), and a power source (8), wherein the electrochromic yarn (6) contains a first flexible conductive yarn (5) and an electrochromic layer (4) coated on a surface layer of the first flexible conductive yarn (5); the ion storage yarn (18) contains a second flexible conductive yarn (1) and an ion storage layer (17) coated on a surface layer of the second flexible conductive yarn (1); and the first flexible conductive yarn (5) is electrically connected to a negative electrode of the power source (8), and the second flexible conductive yarn (1) is electrically connected to a positive electrode of the power source (8). The electrochromic device (7) can achieve a clear color development effect and make an electrochromic material have a good fastness.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: January 9, 2024
    Assignee: THE HONG KONG RESEARCH INSTITUTE OF TEXTILES AND APPAREL LIMITED
    Inventors: Edwin Yee Man Keh, Lei Yao, Yeung Yu Hui, Xinxin Huang, Yue Kit Hui, Colin Xin Chen, Derek Lai
  • Publication number: 20210033940
    Abstract: Disclosed are an electrochromic element, device, and product, and a manufacturing method therefor. The electrochromic device (7) comprises: an electrochromic yarn (6), an ion storage yarn (18), and a power source (8), wherein the electrochromic yarn (6) contains a first flexible conductive yarn (5) and an electrochromic layer (4) coated on a surface layer of the first flexible conductive yarn (5); the ion storage yarn (18) contains a second flexible conductive yarn (1) and an ion storage layer (17) coated on a surface layer of the second flexible conductive yarn (1); and the first flexible conductive yarn (5) is electrically connected to a negative electrode of the power source (8), and the second flexible conductive yarn (1) is electrically connected to a positive electrode of the power source (8). The electrochromic device (7) can achieve a clear color development effect and make an electrochromic material have a good fastness.
    Type: Application
    Filed: April 10, 2018
    Publication date: February 4, 2021
    Applicant: The Hong Kong Research Institute of Textiles and Apparel Limited
    Inventors: Edwin Yee Man KEH, Lei YAO, Yeung Yu HUI, Xinxin HUANG, Yue Kit HUI, Colin Xin CHEN, Derek LAI
  • Patent number: 9297095
    Abstract: The present penetration-resistant fabric manufacturing method which prevents yarn breakage during the manufacturing process comprises the steps of: (i) blending a fusible yarn and a support yarn to form a blended yarn; (ii) the blended yarn and an elastomeric yarn are formed into a fabric; (iii) treating the fabric by heating so that the fusible yarn melts and spreads over the fabric; and (iv) cooling the fabric to form a penetration barrier. The present invention prevents yarn breakage during the manufacturing process.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: March 29, 2016
    Inventor: King Yeung Yu
  • Publication number: 20140080993
    Abstract: The invention relates to polymeric fibers and a process of preparing polymeric fibers. The process comprises the steps of synthesizing a composite of thermotropic liquid crystalline polymer (TLCP) comprising multi-walled carbon nanotubes (MWNTs), and spinning the composite to form composite fibers. Specifically, the MWNTs are incorporated at a very low concentration. It is demonstrated that the as-spun TLCP/MWNTs composite fibers demonstrated significantly enhanced mechanical properties as compared with the control TLCP fibers without MWNTs. Fibers having 0.3 wt % MWNTs (C-3) demonstrated an increase of tensile modulus and strength by 38% and 32%, respectively, when compared with the control TLCP fiber without MWNTs.
    Type: Application
    Filed: September 20, 2012
    Publication date: March 20, 2014
    Applicant: FIBRASTIC LIMITED
    Inventor: Willie Ka Yeung YU
  • Publication number: 20120005844
    Abstract: The present penetration-resistant fabric manufacturing method which prevents yarn breakage during the manufacturing process comprises the steps of: (i) blending a fusible yarn and a support yarn to form a blended yarn; (ii) the blended yarn and an elastomeric yarn are formed into a fabric; (iii) treating the fabric by heating so that the fusible yarn melts and spreads over the fabric; and (iv) cooling the fabric to form a penetration barrier. The present invention prevents yarn breakage during the manufacturing process.
    Type: Application
    Filed: July 9, 2010
    Publication date: January 12, 2012
    Inventor: King Yeung YU
  • Patent number: 7541460
    Abstract: Processes are disclosed for preparing the antiviral agent entecavir. A resin adsorption process for the isolation and purification of entecavir is also disclosed. Various intermediates useful in the preparation of entecavir are also disclosed.
    Type: Grant
    Filed: December 19, 2005
    Date of Patent: June 2, 2009
    Assignee: Bristol-Myers Squibb Company
    Inventors: Yeung Yu Chan, Sushil K. Rijhwani
  • Patent number: 7034152
    Abstract: Processes are disclosed for preparing the antiviral agent entecavir. A resin adsorption process for the isolation and purification of entecavir is also disclosed. Various intermediates useful in the preparation of entecavir are also disclosed.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: April 25, 2006
    Assignee: Bristol-Myers Squibb Company
    Inventors: Yadagiri R. Pendri, Chung-Pin H. Chen, Sunil S. Patel, Jeffrey M. Evans, Jing Liang, David R. Kronenthal, Gerald L. Powers, Siva Josyula Prasad, Jeffrey T. Bien, Zhongping Shi, Ramesh N. Patel, Amit Banerjee, Yeung Yu Chan, Sushil K. Rijhwani, Ambarish K. Singh, Shaopeng Wang, Milan Stojanovic, David J. Kucera, Richard P. Polniaszek, Charles Lewis, John Thottathil, Dhileepkumar Krishnamurty, Maotang X. Zhou, Purushotham Vemishetti
  • Publication number: 20050112712
    Abstract: A reagent is suitable for measuring the concentration of an analyte in a hemoglobin-containing biological fluid, such as whole blood. The reagent comprises a flavin-dependent enzyme that has specificity for the analyte, a flavin cofactor if, and only if, a flavin is not bound to the enzyme, a tetrazolium dye precursor, an electron transfer agent, and a nitrite salt. The reagent causes dye formation that is a measure of the analyte concentration. The nitrite salt suppresses interfering dye formation caused non-enzymatically by the hemoglobin. Preferably, the reagent is used in a dry strip for measuring glucose in whole blood.
    Type: Application
    Filed: November 16, 2004
    Publication date: May 26, 2005
    Inventors: Tianmei Ouyang, Yeung Yu
  • Publication number: 20050042135
    Abstract: Test strips for determining the concentration of at least one analyte, e.g., glucose, in a physiological sample and methods for their manufacture and use and are provided. The subject test strips include a transfer element for facilitating the transfer of sample to a reaction area of the test strip. In certain embodiments, the transfer element, typically porous, has a first area and a second area, and in certain embodiments the two areas have different thicknesses. In other embodiments, the transfer element is non-porous and is configured to transfer sample by wicking it between the transfer element and the reaction area of the test strip. In the subject methods, the transport element facilitates transfers of a sample to a reaction area of the test strip. The subject test strips and methods find use in a variety of different applications, particularly in the determination of glucose concentrations.
    Type: Application
    Filed: September 10, 2004
    Publication date: February 24, 2005
    Inventors: David Matzinger, Khalid Quraishi, Yeung Yu
  • Publication number: 20040192912
    Abstract: Processes are disclosed for preparing the antiviral agent entecavir. A resin adsorption process for the isolation and purification of entecavir is also disclosed. Various intermediates useful in the preparation of entecavir are also disclosed.
    Type: Application
    Filed: December 11, 2003
    Publication date: September 30, 2004
    Inventors: Yadagiri R. Pendri, Chung-Pin H. Chen, Sunil S. Patel, Jeffrey M. Evans, Jing Liang, David R. Kronenthal, Gerald L. Powers, Siva Josyula Prasad, Jeffrey T. Bien, Zhongping Shi, Ramesh N. Patel, Amit Banerjee, Yeung Yu Chan, Sushil K. Rijhwani, Ambarish K. Singh, Shaopeng Wang, Milan Stojanovic, David J. Kucera, Richard P. Polniaszek, Charles Lewis, John Thottathil, Dhileepkumar Krishnamurty, Maotang X. Zhou, Purushotham Vemishetti
  • Patent number: 5972294
    Abstract: A reagent test strip is adapted for use in a blood glucose meter. A sample of whole blood is applied to one surface of a matrix on the strip and the meter measures the reflectance of the opposite surface of the matrix at about 635 nm and 700 nm and calculates from the reflectance the concentration of glucose in the sample. The portion of the applied sample that penetrates the matrix and is visible from the testing surface does not absorb light to any appreciable extent at 700 nm. Nevertheless, the glucose-containing sample interacts with the components of the reagent-containing matrix to cause a change in reflectance at 700 nm that simulates the effect of the blood color. As a result, the strip can be used in meters that measure glucose concentration in whole blood samples in the presence of optically visible hemoglobin.
    Type: Grant
    Filed: March 16, 1998
    Date of Patent: October 26, 1999
    Assignee: Lifescan, Inc.
    Inventors: John L. Smith, Yeung Yu