Patents by Inventor Ying Kit Cheung

Ying Kit Cheung 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).

  • Overvoltage protection materials and process for preparing same
    Patent number: 7883643
    Abstract: The invention provides a process for preparing an overvoltage protection material comprising: (i) preparing a mixture comprising a polymer binder precursor and a conductive material; and (ii) heating the mixture to cause reaction of the polymer binder precursor and generate a polymer matrix having conductive material dispersed therein, wherein the polymer binder precursor is chosen such that substantially no solvent is generated during the reaction.
    Type: Grant
    Filed: October 21, 2002
    Date of Patent: February 8, 2011
    Inventors: Chi-Ming Chan, Kai-Mo Ng, Catherine Yuen-Chien Wong, Ying Kit Cheung
  • Overvoltage protection materials and process for preparing same
    Patent number: 7803289
    Abstract: The invention provides a process for preparing an overvoltage protection material comprising: (i) preparing a mixture comprising a polymer binder precursor and a conductive material; and (ii) heating the mixture to cause reaction of the polymer binder precursor and generate a polymer matrix having conductive material dispersed therein, wherein the polymer binder precursor is chosen such that substantially no solvent is generated during the reaction.
    Type: Grant
    Filed: March 8, 2006
    Date of Patent: September 28, 2010
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Chi-Ming Chan, Kai-Mo Ng, Catherine Yuen Chien Wong, Ying Kit Cheung
  • Overvoltage protection materials and process for preparing same
    Patent number: 7763185
    Abstract: The invention provides a process for preparing an overvoltage protection material comprising: (i) preparing a mixture comprising a polymer binder precursor and a conductive material; and (ii) heating the mixture to cause reaction of the polymer binder precursor and generate a polymer matrix having conductive material dispersed therein, wherein the polymer binder precursor is chosen such that substantially no solvent is generated during the reaction.
    Type: Grant
    Filed: January 18, 2007
    Date of Patent: July 27, 2010
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Chi-Ming Chan, Kai-Mo Ng, Catherine Yuen-Chien Wong, Ying Kit Cheung
  • Overvoltage protection materials and process for preparing same
    Patent number: 7589611
    Abstract: The invention provides a process for preparing an overvoltage protection material comprising: (i) preparing a mixture comprising a polymer binder precursor and a conductive material; and (ii) heating the mixture to cause reaction of the polymer binder precursor and generate a polymer matrix having conductive material dispersed therein, wherein the polymer binder precursor is chosen such that substantially no solvent is generated during the reaction.
    Type: Grant
    Filed: August 30, 2006
    Date of Patent: September 15, 2009
    Assignee: The Hong Kong Universtiy of Science and Technology
    Inventors: Chi-Ming Chan, Kai-Mo Ng, Catherine Yuen-Chien Wong, Ying Kit Cheung
  • Overvoltage protection materials and process for preparing same
    Publication number: 20040075085
    Abstract: The invention provides a process for preparing an overvoltage protection material comprising:
    Type: Application
    Filed: October 21, 2002
    Publication date: April 22, 2004
    Inventors: Chi-Ming Chan, Kai-Mo NG, Catherine Yuen-Chien Wong, Ying Kit Cheung
  • Polypropylene/calcium carbonate nanocomposites
    Publication number: 20030060547
    Abstract: The present invention provides a composite material comprising calcium carbonate particles dispersed within a polypropylene matrix, wherein the calcium carbonate particles have a size within the range of 1 to 100 nm and a filling ratio of less than about 30% by volume, more preferably less than about 10% by volume. The particles have a mean size of around 40 to 50 nm.
    Type: Application
    Filed: July 24, 2001
    Publication date: March 27, 2003
    Inventors: Chi-Ming Chan, Jingshen Wu, Jiang Xion Li, Ying-Kit Cheung