Patents by Inventor Chi Yuen Chung

Chi Yuen Chung 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: 9115776
    Abstract: The present invention is concerned with a flexing arrangement with a wide range of applications. The arrangement has at least one leaf spring structure having a plurality of reusable leaf springs connected together. At least one of the leaf springs is made of essentially of an alloy of nickel and titanium, and the alloy has a nickel content of substantially 50.1-55 at % and a titanium content of substantially 45-49.9 at %.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: August 25, 2015
    Assignee: CITY UNIVERSITY OF HONG KONG
    Inventors: Chi Yuen Chung, Lok Wang Ma
  • Patent number: 7976568
    Abstract: The present invention relates generally to a device of and a method for correcting spinal deformities, such as scoliosis and kyphosis. The invention employs the superelasticity or pseudoelasticity, such as found in a nickel-titanium alloy, to provide a continuous, predictable, and controllable correction force and to achieve a gradual and full correction. The correction force can be exerted on the deformed spine either at the time of the spine surgery or after the surgery or both, to afford a full or substantially full correction. The continuous and controllable correction force of the present invention is safer than an instantaneous and large correction force applied only at the time of surgery. Additionally, the continuous and controllable correction force is capable of gradually and fully correcting the spinal deformities without any post-operative manipulation of the correction device or re-operation.
    Type: Grant
    Filed: August 25, 2003
    Date of Patent: July 12, 2011
    Assignees: University of Hong Kong, City University of Hong Kong
    Inventors: Kenneth M. Cheung, Kelvin W. K. Yeung, Chi Yuen Chung, William W. Lu
  • Publication number: 20110103994
    Abstract: A method of forming a metal alloy from a powder composition comprising first particles in a range of approximately 20-90% by weight of the powder composition, the remainder of the powder composition comprising approximately 95% by weight of second particles and 5% by weight of third particles, wherein the method includes the step of using rapid thermal processing (RTP) to sinter the powder composition.
    Type: Application
    Filed: August 9, 2010
    Publication date: May 5, 2011
    Applicant: Automotive Parts and Accessory Systems R&D Centre Limited
    Inventors: June-Sang SIAK, Chan Hung Shek, Chi Yuen Chung, Wai-Lam Ralph Ip, Tik Lam Cheung