Amazon patents granted on 16 April 2013

15 US patents granted on 16 April 2013 and assigned to Amazon

1 8,423,899 Text field input
2 8,423,889 Device specific presentation control for electronic book reader devices
3 8,423,667 Updating routing information based on client location
4 8,423,585 Variants of files in a file system
5 8,423,532 Managing data indexed by a search engine
6 8,423,462 Real-time mobile wallet server
7 8,423,457 Anonymous mobile payments
8 8,423,432 System and method for authoritative item identification based on facility operations
9 8,423,431 Light emission guidance
10 8,423,423 Method and system for price suggesting using item-specific attributes
11 8,423,420 Method and media for duplicate detection in an electronic marketplace
12 8,423,349 Filtering phrases for an identifier
13 8,423,061 Initiation of wireless service
14 8,421,816 Selection of colors
15 8,418,915 Method and system for using machine-readable codes to maintain environmental impact preferences