Patents by Inventor Zhigiang Zeeman Zhang

Zhigiang Zeeman Zhang 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).

  • Method and system for screening calls during voicemail messaging
    Patent number: 7035385
    Abstract: The present invention relates to systems and methods for monitoring and intercepting messages to a voicemail system connected to an AIN or WIN network for screening calls incoming to a landline or wireless telephone. After a call is forwarded to voicemail system, the called party is provided an opportunity to monitor a message as it is spoken into a voicemail system. The called party may intercept the message at any time during delivery of the message to answer the telephone call.
    Type: Grant
    Filed: March 29, 2002
    Date of Patent: April 25, 2006
    Assignee: BellSouth Intellectual Property Corporation
    Inventors: David A. Levine, Greg N. Patterson, James Worsham, Zhigiang Zeeman Zhang
  • Method and system for screening calls during voicemail messaging
    Publication number: 20040258220
    Abstract: The present invention relates to systems and methods for monitoring and intercepting messages to a voicemail system connected to an AIN or WIN network for screening calls incoming to a landline or wireless telephone. After a call is forwarded to voicemail system, the called party is provided an opportunity to monitor a message as it is spoken into a voicemail system. The called party may intercept the message at any time during delivery of the message to answer the telephone call.
    Type: Application
    Filed: March 29, 2002
    Publication date: December 23, 2004
    Inventors: David A. Levine, Greg N. Patterson, James Worsham, Zhigiang Zeeman Zhang