Patents by Inventor Yuen-wah Wong

Yuen-wah Wong 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).

  • Polymer-bonded magnetic materials
    Patent number: 8277678
    Abstract: A magnetic composition for power conversion includes a thermoplastic polymer and magnetic powders. The composition has a tensile strength of greater than 20 N/mm2.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: October 2, 2012
    Assignee: The Hong Kong Polytechnic University
    Inventors: Ka Wai Eric Cheng, Yuen Wah Wong, Wei Tai Wu, Kai Ding, Yiu Lun Ho, Tsz Kong Cheung, Chi Keong Cheong
  • Measurement of lateral yarn density distribution
    Patent number: 6577706
    Abstract: An apparatus for measuring the lateral yarn density distribution of a yarn uses selected X-ray radiation. Radiation absorption is determined in a number of narrow planes across the yarn and in two or more rotational orientations. The measuring takes place without any damage to or physical interference with the yarn.
    Type: Grant
    Filed: August 3, 2001
    Date of Patent: June 10, 2003
    Assignee: The Hong Kong Polytechnic University
    Inventors: Ka-fai Choi, Yuen-wah Wong
  • Measurement of lateral yarn density distribution
    Publication number: 20030068007
    Abstract: Apparatus for measuring the lateral yarn density distribution of a yarn uses selected radiation in the X-ray spectrum wavelength. Radiation absorption is determined in a number of narrow planes across the yarn and in two or more rotational orientations. The measuring takes place without any damage to or physical interference with the yarn.
    Type: Application
    Filed: August 3, 2001
    Publication date: April 10, 2003
    Applicant: The Hong Kong Polytechnic University
    Inventors: Ka-fai Choi, Yuen-wah Wong