Patents by Inventor Jim H. Chan

Jim H. Chan 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: 6957058
    Abstract: A service control point transmits a recharge request message or advice of charge to a mobile client resident in a wireless communications device. The message is first received by a wireless telephony application server that then forwards the message to a wireless access protocol gateway. The wireless access protocol gateway then sends the request to the mobile client. The user of the mobile client responds with an affirmative or negative answer to the request to recharge the prepaid telephone airtime account. The service control point then either recharges the account as instructed or lets the account expire, depending on the response from the user.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: October 18, 2005
    Assignee: SBC Technology Resources, Inc.
    Inventors: Jim H. Chan, Lalitha Suryanarayana, Richard Carl Schmidt
  • Patent number: 6792265
    Abstract: A wireless access protocol-capable telephone provides the ability to conference call numerous individuals. While maintaining the conference call, the telephone user simultaneously uses the wireless access protocol browser to perform data communication. The user then relays the information accumulated from the data communication back to the conference call.
    Type: Grant
    Filed: October 2, 2000
    Date of Patent: September 14, 2004
    Assignee: SBC Technology Resources, Inc.
    Inventors: Jim H. Chan, Lalitha Suryanarayana
  • Publication number: 20030073426
    Abstract: A service control point transmits a recharge request message or advice of charge to a mobile client resident in a wireless communications device. The message is first received by a wireless telephony application server that then forwards the message to a wireless access protocol gateway. The wireless access protocol gateway then sends the request to the mobile client. The user of the mobile client responds with an affirmative or negative answer to the request to recharge the prepaid telephone airtime account. The service control point then either recharges the account as instructed or lets the account expire, depending on the response from the user.
    Type: Application
    Filed: September 25, 2002
    Publication date: April 17, 2003
    Inventors: Jim H. Chan, Lalitha Suryanarayana, Richard Carl Schmidt
  • Patent number: 6487401
    Abstract: A service control point transmits a recharge request message or advice of charge to a mobile client resident in a wireless communications device. The message is first received by a wireless telephony application server that then forwards the message to a wireless access protocol gateway. The wireless access protocol gateway then sends the request to the mobile client. The user of the mobile client responds with an affirmative or negative answer to the request to recharge the prepaid telephone airtime account. The service control point then either recharges the account as instructed or lets the account expire, depending on the response from the user.
    Type: Grant
    Filed: December 18, 2000
    Date of Patent: November 26, 2002
    Assignee: SBC Technology Resources, Inc.
    Inventors: Lalitha Suryanarayana, Jim H. Chan, Richard Carl Schmidt
  • Publication number: 20020077076
    Abstract: A service control point transmits a recharge request message or advice of charge to a mobile client resident in a wireless communications device. The message is first received by a wireless telephony application server that then forwards the message to a wireless access protocol gateway. The wireless access protocol gateway then sends the request to the mobile client. The user of the mobile client responds with an affirmative or negative answer to the request to recharge the prepaid telephone airtime account. The service control point then either recharges the account as instructed or lets the account expire, depending on the response from the user.
    Type: Application
    Filed: December 18, 2000
    Publication date: June 20, 2002
    Inventors: Lalitha Suryanarayana, Jim H. Chan, Richard Carl Schmidt
  • Patent number: 6072857
    Abstract: A method and system for monitoring the operational status of a network element in an advanced intelligent network is provided. Custom telecommunications services, such as a call forwarding service, are processed by routing a call to a network element, such as a service circuit node, that processes the call and provides the custom telecommunications service. When the network element or application software resident at that network element fails, calls routed to that network element may be mishandled. The method and system of the present invention utilize advanced intelligent network services to monitor a desired network element prior to routing a call to that network element for custom telecommunications service. A heartbeat message is utilized between a monitored network element and a monitoring network element. The method and system reduce network element downtime by alerting maintenance personnel of network element or application software failure.
    Type: Grant
    Filed: December 19, 1996
    Date of Patent: June 6, 2000
    Assignee: Bellsouth Intellectual Property Management Corporation
    Inventors: M. S. Venkateshwaran, Jim H. Chan, Susan Beth Price
  • Patent number: 5974115
    Abstract: A system and method for testing the operation of a piece of terminating equipment or subscriber line through the use of a single service platform. A test call originating from the piece of terminating equipment or subscriber line under test is received. In response to receiving the test call, a transmission path is established from the piece of terminating equipment under test to the single service platform. The single service platform then transmits a menu message over the transmission path to the piece of terminating equipment under test. In response to transmitting the menu message, the single service platform receives a selection indicator over the transmission path, the selection indicator identifying a verification test to be provided. The selection indicator is then processed and the identified verification test is provided by the single service platform to the piece of terminating equipment. This system and method allows several verification tests to be available from a single service platform.
    Type: Grant
    Filed: November 15, 1996
    Date of Patent: October 26, 1999
    Assignee: BellSouth Intellectual Property Managment Corporation
    Inventors: Jim H. Chan, Stephen R. LaPierre
  • Patent number: 5748717
    Abstract: A method and system 11 for quickly changing a subscriber's long distance or local carrier while allowing the subscriber to maintain the same directory number. A preferred carrier code is entered into an interim carrier database 42, 43, and an indicator is activated for communications originating on the subscriber's line 14a. When a communication originating on the subscriber's line 14a is subsequently received, the carrier-of-record code is retrieved from a subscriber database 44, and the preferred carrier code is retrieved from the interim carrier database 42, 43. The preferred carrier code is compared to the carrier-of-record code. If the preferred carrier code is different than the carrier-of-record code, the preferred carrier code is used to assign the communication to the preferred carrier. At a later time, the carrier-of-record code in the subscriber database 44 is updated with the subscriber's preferred carrier code.
    Type: Grant
    Filed: July 19, 1996
    Date of Patent: May 5, 1998
    Assignee: BellSouth Corporation
    Inventors: Jim H. Chan, Nailesh B. Desai
  • Patent number: 5100667
    Abstract: A method of making, without use of a solvent, insecticidal pellet compositions of N-hydrocarboyl phosphoroamidothioates and phosphoroamidodithioates is provided.
    Type: Grant
    Filed: March 12, 1990
    Date of Patent: March 31, 1992
    Assignee: Chevron Research and Technology Company
    Inventors: Jim H. Chan, Kent A. Hasse, Roderick I. Satre, James H. Trusler
  • Patent number: 5075058
    Abstract: A method of making insecticidal pellet compositions of N-hydrocarboyl phosphoroamidothioates and phosphoroamidodithioates, combined with a herbicide, fungicide, fertilizer or other insecticide is provided.
    Type: Grant
    Filed: January 30, 1990
    Date of Patent: December 24, 1991
    Assignee: Chevron Research and Technology Company
    Inventors: Jim H. Chan, Kent A. Hasse, Roderick I. Satre, James H. Trusler