Patents by Inventor Shun-Cheng Lee

Shun-Cheng Lee 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).

  • ROOM TEMPERATURE GAS SENSORS
    Publication number: 20090101501
    Abstract: A gas sensor may include a mat including nanofibers attached to a substrate layer, a first electrode in electrical communication with one end of the mat, and a second electrode in electrical communication with the other end of the mat. The sensitivity of the gas sensor for carbon monoxide at a concentration of 50 ppm in air, and at a temperature from about 20° C. to 26° C., is at least 1.29.
    Type: Application
    Filed: October 17, 2007
    Publication date: April 23, 2009
    Inventors: Xiao-ming Tao, An Yang, Rong-xin Wang, Shun Cheng Lee, Charles Surya
  • Photocatalyst and methods of making such
    Publication number: 20050164876
    Abstract: The conversion efficiency of existing photocatalysts may decrease with increasing humidity level. The photocatalyst of this invention is made be first mixing an alcohol, a titanium alkoxide and a binder in the presence of a catalytic acid to form a mixture. This mixture is then heated at about 100° C. for at least 2 hours, and then calcinated at about 450° C. for at least 2 hours. The resulting catalyst is found to have improved efficacy at high humidity level.
    Type: Application
    Filed: January 28, 2004
    Publication date: July 28, 2005
    Applicant: The Hong Hong Polytechnic University, a university of Hong Kong
    Inventors: Shun-Cheng Lee, Chio-Hang Ao