Patents by Inventor Prabhakar Tadepalli

Prabhakar Tadepalli 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).

  • Electronic stripe cards
    Publication number: 20070023532
    Abstract: An electronic stripe card senses when it is being swiped passed a read head, and drives a conductive path to mimic a magnetic card track. Multiple conductive paths may be driven in an interleaved fashion one after another. The card may include multiple swipe sensors to detect when to start and stop driving the conductive paths. The conductive paths may include traces on a top metal layer and bottom metal layer without magnetic material therebetween.
    Type: Application
    Filed: July 18, 2006
    Publication date: February 1, 2007
    Inventors: Siva Narendra, Prabhakar Tadepalli, Thomas Spitzer
  • Symmetric cryptography with user authentication
    Publication number: 20070014407
    Abstract: A device uses a user authentication factor to generate a symmetric key for use in symmetric cryptography. The user authentication factor is encrypted and stored for authentication during decryption.
    Type: Application
    Filed: July 15, 2005
    Publication date: January 18, 2007
    Inventors: Siva Narendra, Prabhakar Tadepalli, Thomas Spitzer
  • Asymmetric cryptography with user authentication
    Publication number: 20070016798
    Abstract: A device uses a user authentication factor to generate a decryption key for use in asymmetric cryptography. An encryption key is generated from the decryption key using a one-way function.
    Type: Application
    Filed: July 15, 2005
    Publication date: January 18, 2007
    Inventors: Siva Narendra, Prabhakar Tadepalli, Thomas Spitzer
  • Hybrid symmetric/asymmetric cryptography with user authentication
    Publication number: 20070014408
    Abstract: A device uses a user authentication factor to generate an asymmetric decryption key for use in cryptography. An asymmetric encryption key is generated from the asymmetric decryption key using a one-way function, and the asymmetric encryption key is used to encrypt a symmetric key.
    Type: Application
    Filed: July 15, 2005
    Publication date: January 18, 2007
    Inventors: Siva Narendra, Prabhakar Tadepalli, Thomas Spitzer
  • Sleeve for electronic transaction card
    Publication number: 20060226217
    Abstract: A sleeve provides communications between an electronic transaction card and an intelligent electronic device. The intelligent electronic device may be a mobile phone or other device with or without network connectivity. The electronic transaction card may have magnetic field producing circuitry compatible with magnetic card readers, smartcard circuitry, other point-of-sale interfaces, or any combination thereof.
    Type: Application
    Filed: April 7, 2005
    Publication date: October 12, 2006
    Inventors: Siva Narendra, Prabhakar Tadepalli, Thomas Spitzer
  • Electronic transaction card
    Publication number: 20060186209
    Abstract: An electronic transaction card communicates with an add-on slot of an intelligent electronic device. The add-on slot may be a memory card slot. The intelligent electronic device may be a mobile phone or other device with or without network connectivity. The electronic transaction card may have magnetic field producing circuitry compatible with magnetic card readers, smartcard circuitry, other point-of-sale interfaces, or any combination thereof.
    Type: Application
    Filed: February 22, 2005
    Publication date: August 24, 2006
    Inventors: Siva Narendra, Thomas Spitzer, Prabhakar Tadepalli
  • System and method for securing financial transactions
    Publication number: 20050269401
    Abstract: A financial transaction system utilizes multi-factor authentication to secure financial transactions.
    Type: Application
    Filed: June 3, 2005
    Publication date: December 8, 2005
    Inventors: Thomas Spitzer, Prabhakar Tadepalli, Siva Narendra
  • System and method for securing financial transactions
    Publication number: 20050269402
    Abstract: A financial transaction system utilizes multi-factor authentication to secure financial transactions.
    Type: Application
    Filed: June 3, 2005
    Publication date: December 8, 2005
    Inventors: Thomas Spitzer, Prabhakar Tadepalli, Siva Narendra