Patents by Inventor Liu Yubao

Liu Yubao 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).

  • Publication number: 20040073798
    Abstract: Techniques are described for distributed production of controlled certificates, such as license plates for motor vehicles, in a secure manner. Controlled certificates may be printed at a local branch office subject to the control of a client computer. A server computer may regulate the operations of the client computers at the branch offices. The production system includes any of several security features to deter forgery and counterfeiting. For example, the security components that make up a finished controlled certificate may be separately secured with unique security elements. The finished controlled certificate may also have a unique security element.
    Type: Application
    Filed: June 10, 2003
    Publication date: April 15, 2004
    Inventors: Thomas F. Look, Liu Yubao, Mao Jianyong, Zhang Wei, Craig A. Schmidt, Qui Tian, Chen Wei, Huang Tien-Hsiagn, Ji Hong, Robert T. Krasa, Jeremy P. Gundale
  • Publication number: 20040050936
    Abstract: Techniques are described for distributed production of license plates, such as license plates for motor vehicles, in a secure manner. License plates may be printed at a local branch office subject to the control of a client computer. A server computer may regulate the operations of the client computers at the branch offices. The production system includes any of several security features to deter forgery and counterfeiting. For example, the security components that make up a finished license plate may be separately secured with unique security elements. The finished license plate may also have a unique security element.
    Type: Application
    Filed: June 10, 2003
    Publication date: March 18, 2004
    Inventors: Thomas F. Look, Liu Yubao, Mao Jianyong, Zhang Wei, Craig A. Schmidt, Qui Tian, Chen Wei, Huang Tien-Hsiagn, Ji Hong, Robert T. Krasa, Jeremy P. Gundale
  • Patent number: D787033
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: May 16, 2017
    Assignee: Danfoss Micro Channel Heat Exchanger (Jiaxing) Co., Ltd.
    Inventors: Jin Huan, Liu Yubao