Patents by Inventor Chi Chiu CHEUNG

Chi Chiu 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).

  • RFID Technology
    Publication number: 20090231138
    Abstract: A method of selectively waking up a plurality of RFID tags includes (a) providing a first RFID tag; (b) programming the first RFID tag to respond and wake up only to signals at a first sub-carrier frequency or with a first code; (c) providing a second RFID tag; and (d) programming the second RFID tag to respond and wake up only to signals at a second sub-carrier frequency or with a second code.
    Type: Application
    Filed: March 14, 2008
    Publication date: September 17, 2009
    Applicant: CHUNG NAM ELECTRONICS CO. LTD.
    Inventors: Kin Yue Albert LAI, Siu Chong TIN, On Yung Timmy WONG, Chi Chiu CHEUNG