Patents by Inventor Prakash Panjwani

Prakash Panjwani 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).

  • Enhanced subscriber authentication protocol
    Patent number: 7352866
    Abstract: The present invention provides a method of authenticating a pair of correspondents in a communication system, such as in a mobile phone network by utilizing a blend of public-key cryptography and symmetric cryptography. Each session between the mobile phone and the network consists of public-key based mutual authentication and key exchange followed by symmetric-key secure data exchange.
    Type: Grant
    Filed: September 15, 2006
    Date of Patent: April 1, 2008
    Assignee: Certicom
    Inventors: Prakash Panjwani, Simon Blake-Wilson
  • Enhanced subscriber authentication protocol
    Publication number: 20070014410
    Abstract: The present invention provides a method of authenticating a pair of correspondents in a communication system, such as in a mobile phone network by utilizing a blend of public-key cryptography and symmetric cryptography. Each session between the mobile phone and the network consists of public-key based mutual authentication and key exchange followed by symmetric-key secure data exchange.
    Type: Application
    Filed: September 15, 2006
    Publication date: January 18, 2007
    Inventors: Prakash Panjwani, Simon Blake-Wilson
  • Enhanced subscriber authentication protocol
    Patent number: 7123721
    Abstract: The present invention provides a method of authenticating a pair of correspondents in a communication system, such as in a mobile phone network by utilizing a blend of public-key cryptography and symmetric cryptography. Each session between the mobile phone and the network consists of public-key based mutual authentication and key exchange followed by symmetric-key secure data exchange.
    Type: Grant
    Filed: June 4, 2001
    Date of Patent: October 17, 2006
    Assignee: Certicom Corp.
    Inventors: Prakash Panjwani, Simon Blake-Wilson
  • Enhanced subscriber authentication protocol
    Publication number: 20020018569
    Abstract: The present invention provides a method of authenticating a pair of correspondents in a communication system, such as in a mobile phone network by utilizing a blend of public-key cryptography and symmetric cryptography. Each session between the mobile phone and the network consists of public-key based mutual authentication and key exchange followed by symmetric-key secure data exchange.
    Type: Application
    Filed: June 4, 2001
    Publication date: February 14, 2002
    Inventors: Prakash Panjwani, Simon Blake-Wilson
  • Method and apparatus for extending coverage in a cellular communication system
    Patent number: 6125279
    Abstract: Method for transmitting data packets between base site and designated mobile unit outside coverage area of base site comprises: identifying data packet; transmitting data packet to unit along calculated traffic path; determining if unit is designated unit; and retransmitting data packet from that unit until receiving unit is designated unit.
    Type: Grant
    Filed: January 7, 1998
    Date of Patent: September 26, 2000
    Assignee: Motorola, Inc.
    Inventors: Janusz Ryszard Hyziak, Valentin Oprescu-Surcobe, Prakash Panjwani