Patents by Inventor Ningyan Liu

Ningyan Liu 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).

  • Audio Advertising computer system and method
    Publication number: 20020095330
    Abstract: A computer-implemented audio advertising system for providing audio advertisements to users over a network. An advertising management server receives audio advertisements and advertisement account data over the network. An advertising database stores the audio advertisements and advertisement account data. Upon requests from telephony services, an advertising selection and retrieval server fetches audio ads according to a set of effective searching criteria. The retrieved audio ad is played to users of the telephony services.
    Type: Application
    Filed: January 12, 2001
    Publication date: July 18, 2002
    Inventors: Stuart Berkowitz, Liang Shen, Ningyan Liu, Robert Marchand