Patents by Inventor Dat Huu Nguyen

Dat Huu Nguyen 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 a reliable distributed category-specific do-not-contact list
    Patent number: 7925704
    Abstract: A computer implemented method comprising receiving a list of one or more contact points from a sender and comparing the list of one or more contact points to a satellite server's do-not-contact list. Any contact point on the list of one or more contact points that appears on the satellite server's do-not-contact list is reported to the sender. The satellite server's do-not-contact list is generated from a do-not-contact list distributed by a master server. A registrant registers with the master server to provide a registrant contact point to be on the do-not-contact list to be distributed by the master server. The contact points in the registry may be organized in a hierarchy with preferences at one or more levels.
    Type: Grant
    Filed: April 29, 2004
    Date of Patent: April 12, 2011
    Assignee: UNSPAM, LLC
    Inventors: Arthur M. Keller, Lee Holloway, John Rodrigues, Dat Huu Nguyen, Thomas Belote, Matthew B. Prince