Patents by Inventor Tzu-Lang Yang

Tzu-Lang Yang 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).

  • Apparatus and Method For Automatic Call Back
    Publication number: 20080123629
    Abstract: An apparatus and method for automatic call back are disclosed. When a first communication device requests connection via a first communication network with a higher calling rate, a second communication device of the present invention refuses the connection via the first communication network, but instead, requests communication with the first communication device via a second communication network with a lower calling rate.
    Type: Application
    Filed: November 29, 2006
    Publication date: May 29, 2008
    Applicant: F3 INC.
    Inventors: Wi-Sheng Ou Yang, Tzu-Lang Yang