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    2018: 1

  1. Authorization Policy for Group-Centric Secure Information Sharing.  Ram Krishnan and Ravi Sandhu.  USA Patent 10,116,664.  October 30, 2018.

    2. 2014: 1

  2. Method and System for Verifying User Instructions.  Ravi Sandhu and Ravi Ganesan.  USA Patent 8,800,018.  August 5, 2014. (Continuation of 8,332,921.)

    3. 2013: 1

  3. Augmented Single Factor Split Key Asymmetric Cryptography-Key Generation and Distributor.  Ravi Ganesan, Ravi Sandhu, Andrew Cottrell and Kyle Austin.  USA Patent 8,407,475.  March 26, 2013. (Continuation of 7,895,437.)

    4. 2012: 4

  4. Securing Multifactor Split Key Asymmetric Crypto Keys.  Ravi Sandhu, Brett Schoppert, Ravi Ganesan, Mihir Bellare and Colin deSa.  USA Patent 8,340,287.  December 25, 2012.
  5. Enhanced Security for User Instructions.  Ravi Sandhu and Ravi Ganesan.  USA Patent 8,332,921.  December 11, 2012.
  6. Roaming Utilizing an Asymmetric Key Pair.  Ravi Sandhu, Brett Schoppert, Ravi Ganesan, Mihir Bellare and Colin deSa.  USA Patent 8,213,608.  July 3, 2012.
  7. Asymmetric Cryptography with Rolling Key Security.  Ravi Sandhu, Brett Schoppert, Ravi Ganesan, Mihir Bellare and Colin deSa.  USA Patent 8,099,607.  January 17, 2012.

    8. 2011: 3

  8. Secure Cookies.  Ravi Sandhu and Joon Park.  USA Patent 8,019,881.  September 13, 2011. (Continuation of 7,293,098 and 6,985,943.)
  9. Augmented Single Factor Split Key Asymmetric Cryptography-Key Generation and Distributor.  Ravi Ganesan, Ravi Sandhu, Andrew Cottrell and Kyle Austin.  USA Patent 7,895,437.  February 22, 2011.
  10. Flexible and Adjustable Authentication in Cyberspace.  Ravi Sandhu, Ravi Ganesan, Andrew Cottrell, Tim Renshaw, Brett Schoppert and Kyle Austin.  USA Patent 7,886,346.  February 8, 2011.

    11. 2010: 4

  11. Protecting One-Time-Passwords Against Man-in-the-Middle Attacks.  Ravi Ganesan, Ravi Sandhu, Andrew Cottrell, Brett Schoppert and Mihir Bellare.  USA Patent 7,840,993.  November 23, 2010.
  12. Secure Login Using Single Factor Split Key Asymmetric Cryptography and an Augmenting Factor.  Ravi Ganesan, Ravi Sandhu, Andrew Cottrell and Kyle Austin.  USA Patent 7,734,912.  June 8, 2010.
  13. Secure Login Using Augmented Single Factor Split Key Asymmetric Cryptography.  Ravi Ganesan, Ravi Sandhu, Andrew Cottrell and Kyle Austin.  USA Patent 7,734,911.  June 8, 2010.
  14. Multifactor Split Asymmetric Crypto-key with Persistent Key Security.  Ravi Sandhu, Brett Schoppert, Ravi Ganesan, Mihir Bellare and Colin deSa.  USA Patent 7,734,045.  June 8, 2010.

    15. 2009: 5

  15. Multiple Factor Private Portion of an Asymmetric Key.  Ravi Sandhu, Brett Schoppert, Ravi Ganesan, Mihir Bellare and Colin deSa.  USA Patent 7,630,493.  December 12, 2009.
  16. Asymmetric Key Pair Having a Kiosk Mode.  Ravi Sandhu, Brett Schoppert, Ravi Ganesan, Mihir Bellare and Colin deSa.  USA Patent 7,599,493.  October 6, 2009.
  17. Technique for Providing Multiple Levels of Security.  Ravi Sandhu, Brett Schoppert, Ravi Ganesan, Mihir Bellare and Colin deSa.  USA Patent 7,596,697.  September 29, 2009.
  18. Secure Login Using a Multifactor Split Asymmetric Crypto-Key with Persistent Key Security.  Ravi Sandhu, Brett Schoppert, Ravi Ganesan, Mihir Bellare and Colin deSa.  USA Patent 7,571,471.  August 4, 2009.
  19. Technique for Asymmetric Crypto-Key Generation.  Ravi Sandhu, Brett Schoppert, Ravi Ganesan, Mihir Bellare and Colin deSa.  USA Patent 7,565,527.  July 21, 2009.

    20. 2008: 2

  20. Laddered Authentication Security Using Split Key Asymmetric Cryptography.  Ravi Sandhu, Colin deSa and Karuna Ganesan.  USA Patent 7,447,903.  November 4, 2008. (Continuation of 7,069,435.)
  21. Authentication Protocol Using a Multi-Factor Asymmetric Key Pair.  Ravi Sandhu, Brett Schoppert, Ravi Ganesan, Mihir Bellare and Colin deSa.  USA Patent 7,386,720.  June 10, 2008.

    22. 2007: 1

  22. System and Apparatus for Storage and Transfer of Secure Data on Web.  Ravi Sandhu and Joon Park.  USA Patent 7,293,098.  November 6, 2007. (Continuation of 6,985,953.)

    23. 2006: 6

  23. Method and System for Authorizing Generation of Asymmetric Crypto-Keys.  Ravi Sandhu, Colin deSa and Karuna Ganesan.  USA Patent 7,149,310.  December 12, 2006.
  24. System and Method for Authentication in a Crypto-System Utilizing Symmetric and Asymmetric Crypto-Keys.  Ravi Sandhu, Colin deSa and Karuna Ganesan.  USA Patent 7,069,435.  June 27, 2006.
  25. System and Method for Generation and Use of Asymmetric Crypto-Keys Each Having a Public Portion and Multiple Private Portions.  Ravi Sandhu, Colin deSa and Karuna Ganesan.  USA Patent 7,065,642.  June 20, 2006.
  26. One Time Password Entry to Access Multiple Network Sites.  Ravi Sandhu, Colin deSa and Karuna Ganesan.  USA Patent 7,055,032.  May 30, 2006.
  27. Secure Communications Network With User Control of Authenticated Personal Information Provided to Network Entities.  Ravi Sandhu, Colin deSa and Karuna Ganesan.  USA Patent 7,017,041.  March 21, 2006.
  28. System and Apparatus for Storage and Transfer of Secure Data on Web.  Ravi Sandhu and Joon Park.  USA Patent 6,985,953.  January 10, 2006.

    29. 2005: 3

  29. A System and Method for Crypto-key Generation and Use in Cryptosystem.  Ravi Sandhu, Colin deSa and Karuna Ganesan.  USA Patent 6,970,562.  November 29, 2005.
  30. High Security Cryptosystem.  Ravi Sandhu, Colin deSa and Karuna Ganesan.  USA Patent 6,940,980. September 6, 2005.
  31. A System and Method for Password Throttling.  Ravi Sandhu, Colin deSa and Karuna Ganesan.  USA Patent 6,883,095. April 19, 2005.