Patents by Inventor Xiang Yang Zheng

Xiang Yang Zheng 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: 20040166552
    Abstract: Compositions, methods, devices and kits for use in the calibration of coagulation tests. The control compositions comprise particles capable of aggregating in plasma and calcium ions which, when mixed with plasma, simulate the behavior of whole blood in a coagulation test. The methods comprise providing calcium ions and particles capable of aggregating in plasma, combining the particles and calcium ions with plasma to form a control composition, and applying the control composition to a coagulation test. The devices comprise a container having at least two compartments, with one compartment including particles that promote or induce aggregation of a protein or proteins in plasma, and the other compartment includes a solution of calcium ions. The kits comprise a control composition comprising a container of calcium ions, a container of particles capable of inducing aggregation of proteins in plasma, and one or more coagulation test devices.
    Type: Application
    Filed: February 19, 2004
    Publication date: August 26, 2004
    Inventors: Xiang Yang Zheng, Brian Earp, Herbert Chow, Christa Hartmann
  • Patent number: 6746872
    Abstract: Compositions, methods, devices and kits for use in the calibration of coagulation tests. The control compositions include particles capable of aggregating in plasma and calcium ions which, when mixed with plasma, simulate the behavior of whole blood in a coagulation test. The methods include providing calcium ions and particles capable of aggregating in plasma, combining the particles and calcium ions with plasma to form a control composition, and applying the control composition to a coagulation test. The devices include a container having at least two compartments, with one compartment including particles that promote or induce aggregation of a protein or proteins in plasma, and the other compartment includes a solution of calcium ions. The kits include a control composition including a container of calcium ions, a container of particles capable of inducing aggregation of proteins in plasma, and one or more coagulation test devices.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: June 8, 2004
    Assignee: LifeScan, Inc.
    Inventors: Xiang Yang Zheng, Brian Earp, Herbert Chow, Christa Hartmann
  • Publication number: 20030153084
    Abstract: Compositions, methods, devices and kits for use in the calibration of coagulation tests. The control compositions comprise particles capable of aggregating in plasma and calcium ions which, when mixed with plasma, simulate the behavior of whole blood in a coagulation test. The methods comprise providing calcium ions and particles capable of aggregating in plasma, combining the particles and calcium ions with plasma to form a control composition, and applying the control composition to a coagulation test. The devices comprise a container having at least two compartments, with one compartment including particles that promote or induce aggregation of a protein or proteins in plasma, and the other compartment includes a solution of calcium ions. The kits comprise a control composition comprising a container of calcium ions, a container of particles capable of inducing aggregation of proteins in plasma, and one or more coagulation test devices.
    Type: Application
    Filed: January 16, 2002
    Publication date: August 14, 2003
    Inventors: Xiang Yang Zheng, Brian Earp, Herbert Chow, Christa Hartmann