Patents by Inventor Chee-Seng Chow

Chee-Seng Chow 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).

  • Patent number: 7512799
    Abstract: A system and method for performing multiple user authentications with a single sign-on is disclosed. This system and method begins when the user performs a first user authentication, with user name and password, within the user's Intranet. Then the user selects a remote server subsequent to the first authentication. The server in the Intranet sends a token to the remote server containing authentication information made available because of the first authentication. Finally, the remote server decodes the authentication information, which has the effect within the remote server of performing a second user authentication without the user needing to sign-on a second time.
    Type: Grant
    Filed: March 3, 2000
    Date of Patent: March 31, 2009
    Assignee: GETTHERE Inc.
    Inventors: Chee-Seng Chow, James Sung, Jerome Tsung-Yao Chen, Fiyaz Sundarji
  • Patent number: 5699427
    Abstract: A system for identifying the authorized receiver of any particular copy of a document. More specifically, each particular copy of a document is fingerprinted by applying a set of variations to a document, where each variation is a change in data contents, but does not change the meaning or perusal experience of the document. A database associating a set of variants to a receiver is maintained. Thus any variant or copy of that variant can be traced to an authorized receiver.
    Type: Grant
    Filed: June 23, 1995
    Date of Patent: December 16, 1997
    Assignee: International Business Machines Corporation
    Inventors: Chee-Seng Chow, Shay Kutten, Marcell Mordechay Yung
  • Patent number: 5673316
    Abstract: A method and apparatus to create, distribute, sell and control access to digital documents using secure cryptographic envelopes. An envelope is an aggregation of information parts, where each of the parts to be protected are encrypted with a corresponding part encryption key. These encrypted information parts along with the other information parts become part of the envelope. Each part encryption key is also encrypted with a public key, and these encrypted part encryption keys are also included in the envelope. The envelope also includes a list of parts where each entry in the list has a part name and a secure hash of the named part. The list is then signed with a secret key to generate a signature, which is also included in the envelope. The signature can be verified using a second public key associated with first secret key, and the integrity of any information part in the envelope can be checked by computing a second hash and comparing it with the corresponding hash in the list of parts.
    Type: Grant
    Filed: March 29, 1996
    Date of Patent: September 30, 1997
    Assignee: International Business Machines Corporation
    Inventors: Joshua Seth Auerbach, Chee-Seng Chow, Marc Adam Kaplan, Jeffrey Charles Crigler
  • Patent number: 5459725
    Abstract: A packet communications network in which multicast transmissions are made reliable by transmitting acknowledgements to all neighbors of every receiving node, including the source node. This allows the relinquishment of message holding buffers as soon as all near neighbors acknowledge receipt of the message after only tile longest round trip time to the nearest neighbors, rather than the round trip to the furthest destination. Moreover, highly reliable ancillary point-to-point transmission facilities can be used to retransmit multicast messages indicated as being lost by failure of acknowledgment. Finally, network partitions occurring during the multicast procedure do not necessarily lose the multicast message to the remote partitions since any node receiving the message can insure delivery to all other nodes in that partition.
    Type: Grant
    Filed: March 22, 1994
    Date of Patent: October 17, 1995
    Assignee: International Business Machines Corporation
    Inventors: Rachel A. Bodner, Chee-Seng Chow, Israel Cidon, John G. Dudley, Allan K. Edwards, Inder S. Gopal, Chandra P. Immanuel, Marc A. Kaplan, Shay Kutten, Theodore E. Tedijanto
  • Patent number: 5355371
    Abstract: In a multicast network communication system, administration of the communication path making up the multicast tree itself has been separated from control and administration of the network. Creation of a multicast distribution tree and control over the membership thereof, is separately controlled independently from the creation and use of the tree transmission path used to communicate among the members of a multicast set. Transmission distribution trees are set up when a transmission request is received and the properties of the transmission path that is required are known. Transmission paths are created and controlled by all nodes in the communications system, each node having necessary control code and processors for responding to requests from set members to transmit a message to groups of users by creating and activating the necessary tree communication path distribution linkages. A distribution tree is created by the Tree Leader by generating a tree address using a random number generator.
    Type: Grant
    Filed: June 18, 1982
    Date of Patent: October 11, 1994
    Assignee: International Business Machines Corp.
    Inventors: Joshua S. Auerbach, Chee-Seng Chow, John E. Drake, Jr., Prabandham M. Gopal, Elizabeth A. Hervatic, Marc A. Kaplan, Marcia L. Peters, Michael J. Ward
  • Patent number: 5233604
    Abstract: A packet communications system utilizes a route determining mechanism by identifying principal paths between the source and the destination in the system. Principal paths are minimum hop count paths with a transmission delay less than a specified threshold. Principal path links are accepted as legs of the optimum path, if feasible, i.e., if the resulting load on the link is less than a specified principal threshold. Secondary links are accepted only if the resulting load on the link is less than a specified secondary threshold, where the secondary threshold is less than the principal threshold. All paths must also have a transmission delay less than a specified threshold. Each request for a route includes the source node, the destination node, the load required, the maximum transmission delay and, if desired, the quality of service parameters which all of the legs of the route must satisfy.
    Type: Grant
    Filed: April 28, 1992
    Date of Patent: August 3, 1993
    Assignee: International Business Machines Corporation
    Inventors: Hamid Ahmadi, Jeane S. Chen, Chee-Seng Chow, Roch Guerin, Levent Gun, Anthony M. Lee, Theodore E. Tedijanto