Patents Represented by Attorney Robert M. DeWitty

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  • User interface containing acoustic sensing modules
    Patent number: 7411866
    Abstract: The present invention relates to a user interface system that is acoustically operated for the control of connected devices. Through the interface, acoustic sounds, such as tap, can be distinguished from less than 10 cm apart.
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: August 12, 2008
    Assignee: The Hong Kong Polytechnic University
    Inventors: Catherine Ka Gee Hu, Kinsun Kin Sun Tung, Lawrence Ming Tat Lau
  • Wastewater treatment process using core-shell particles
    Patent number: 7323110
    Abstract: The present invention relates to a method of treating inorganic and organic compounds in wastewater, such as leachate. The treatment method involves the use of a amphiphilic particles that consist of hydrophobic cores and amine-containing polymer shells. The method of making the particles and their structures are such that the particles have diameters in the range of 100 to 500 nm and they may be used multiples of times more in treating wastewater, through the process of regenerating the particles.
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: January 29, 2008
    Assignee: The Hong Kong Polytechnic University
    Inventor: Pei Li