Patents by Inventor Gang Feng

Gang Feng 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).

  • Method for measuring elastic properties
    Patent number: 6883367
    Abstract: This invention relates to a method for measuring elastic modulus of a sample object. This invention also relates to a method for correcting creep effects in the modulus measurement. The error due to creep in the apparent contact compliance is equal to the ratio of the indenter displacement rate at the end of the load hold to the unloading rate. Determination of this error term and deduction of it from the measured contact compliance can be easily done at a low cost by modifying the data analysis software in any commercial depth-sensing indentation system.
    Type: Grant
    Filed: November 20, 2002
    Date of Patent: April 26, 2005
    Assignee: The University of Hong Kong
    Inventors: Gang Feng, Alfonso Hing Wan Ngan
  • Method for measuring elastic properties
    Publication number: 20050066702
    Abstract: This invention relates to a method for measuring elastic modulus of a sample object. This invention also relates to a method for correcting creep effects in the modulus measurement. The error due to creep in the apparent contact compliance is equal to the ratio of the indenter displacement rate at the end of the load hold to the unloading rate. Determination of this error term and deduction of it from the measured contact compliance can be easily done at a low cost by modifying the data analysis software in any commercial depth-sensing indentation system.
    Type: Application
    Filed: August 13, 2004
    Publication date: March 31, 2005
    Inventors: Gang Feng, Alfonso Ngan
  • Method for measuring elastic properties
    Publication number: 20030094034
    Abstract: This invention relates to a method for measuring elastic modulus of a sample object. This invention also relates to a method for correcting creep effects in the modulus measurement. The error due to creep in the apparent contact compliance is equal to the ratio of the indenter displacement rate at the end of the load hold to the unloading rate. Determination of this error term and deduction of it from the measured contact compliance can be easily done at a low cost by modifying the data analysis software in any commercial depth-sensing indentation system.
    Type: Application
    Filed: November 20, 2002
    Publication date: May 22, 2003
    Inventors: Gang Feng, Alfonso Hing Wan Ngan