Patents by Inventor Richard Carl Schmidt

Richard Carl Schmidt 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).

  • Prepaid wireless telephone account regeneration in a wireless access protocol system
    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
  • Prepaid wireless telephone account regeneration in a wireless access protocol system
    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
  • Prepaid wireless telephone account regeneration in a wireless access protocol system
    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
  • Prepaid wireless telephone account regeneration in a wireless access protocol system
    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