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Patent applications and USPTO patent grants for Ripley; Micheal S..The latest application filed is for "verifying the integrity of a media key block by storing validation data in the validation area of media".
Patent | Date |
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Verifying the integrity of a media key block by storing validation data in the validation area of media Grant 7,155,591 - Ripley , et al. December 26, 2 | 2006-12-26 |
Verifying the integrity of a media key block by storing validation data in a validation area of media Grant 6,912,634 - Ripley , et al. June 28, 2 | 2005-06-28 |
Verifying the integrity of a media key block by storing validation data in the validation area of media App 20040205315 - Ripley, Micheal S. ;   et al. | 2004-10-14 |
Verifying the integrity of a media key block by storing validation data in a validation area of media App 20020087818 - Ripley, Micheal S. ;   et al. | 2002-07-04 |
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