The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 02, 2014
Filed:
Jun. 28, 2010
Ryan J. Snodgrass, Kirkland, WA (US);
James C. Slezak, Seattle, WA (US);
Matthew E. Goldberg, Seattle, WA (US);
Jeremie Leproust, Paris, FR;
Guillaume Jeulin, Bois-Colombes, FR;
Felix F. Antony, Isaquah, WA (US);
Ryan J. Snodgrass, Kirkland, WA (US);
James C. Slezak, Seattle, WA (US);
Matthew E. Goldberg, Seattle, WA (US);
Jeremie Leproust, Paris, FR;
Guillaume Jeulin, Bois-Colombes, FR;
Felix F. Antony, Isaquah, WA (US);
Amazon Technologies, Inc., Reno, NV (US);
Abstract
An electronic book distribution system encrypts distributed electronic books ('eBooks') with a content key. The content key is in turn encrypted with a voucher key. The voucher key for a particular eBook is generated based on a combination of (a) an ID or serial number of an eBook reader device to which the eBook is being distributed, (b) a user account secret associated with a user of the eBook reader device, and (c) metadata associated with the eBook itself.