Patents by Inventor Chl Yuen Chung

Chl 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).

  • Shape memory material and method of making the same
    Patent number: 7306683
    Abstract: The present invention relates generally to a shape memory and/or super-elastic material, such as a nickel titanium alloy. Additionally or alternatively, the present invention relates to a super-elastic or pseudo-elastic material that has an initial transition temperature Af above a body temperature. The shape memory material can have a super-elasticity or pseudo-elasticity property at a temperature below the initial transition temperature Af of the material. For example, the shape memory material can have its workable temperature for producing super-elasticity or pseudo-elasticity of about 0° C. to 15° C. below the initial transition temperature Af. The shape memory material can be malleable at a room temperature, and become super-elastic or pseudo-elastic at a body temperature. In addition, the present invention relates to a method of making a shape memory or a super-elastic material.
    Type: Grant
    Filed: April 19, 2004
    Date of Patent: December 11, 2007
    Assignees: Versitech Limited, The City University of Hong Kong
    Inventors: Kenneth Man Chee Cheung, Kelvin Wai Kwok Yeung, William Weijia Lu, Chl Yuen Chung