Patents by Inventor John J. Chiang

John J. Chiang 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).

  • Scalable network object caching
    Patent number: 6154811
    Abstract: A scalable distributed caching system on a network receives a request for a data object from a user. The caching system carries out a locator function that locates a directory cache for the object. The directory cache stores a directory list that identifies the locations of object caches that purport to store copies of the object requested by the user. The object caches on the object directory list are polled, and in response send messages to the cache that received the user request indicating if each object cache stores a copy of the requested object. The receiving cache sends a message requesting a copy of the object to the object cache that sent the message first received by the receiving cache indicating that an object cache stores the requested object. The object cache that sent the first received message then sends a copy of the object to the receiving cache, which stores a copy and then sends a copy to the user.
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: November 28, 2000
    Assignee: AT&T Corp.
    Inventors: Sinisa Srbljic, Partha P. Dutta, Thomas B. London, Dalibor F. Vrsalovic, John J. Chiang
  • Scalable distributed caching system and method
    Patent number: 5933849
    Abstract: A scalable distributed caching system on a network receives a request for a data object from a user. The caching system carries out a locator function that locates a directory cache for the object. The directory cache stores a directory list that identifies the locations of object caches that purport to store copies of the object requested by the user. The object caches on the object directory list are polled, and in response send messages to the cache that received the user request indicating if each object cache stores a copy of the requested object. The receiving cache sends a message requesting a copy of the object to the object cache that sent the message first received by the receiving cache indicating that an object cache stores the requested object. The object cache that sent the first received message then sends a copy of the object to the receiving cache, which stores a copy and then sends a copy to the user.
    Type: Grant
    Filed: April 10, 1997
    Date of Patent: August 3, 1999
    Assignee: AT&T Corp
    Inventors: Sinisa Srbljic, Partha P. Dutta, Thomas B. London, Dalibor F. Vrsalovic, John J. Chiang