Amazon patents granted on 26 February 2013

11 US patents granted on 26 February 2013 and assigned to Amazon

1 8,386,927 Gravity-based link assist
2 8,386,596 Request routing based on class
3 8,386,540 Scalable relational database service
4 8,386,509 Method and system for associating search keywords with interest spaces
5 8,386,397 System and method for constraint-based reduction of a solution space for vehicle routing
6 8,386,340 Establishing communication based on item interest
7 8,386,336 Customized solicitations of product suggestions and product recommendations
8 8,386,323 Determining item availability
9 8,386,302 Facilitating improvement of results of human performance of tasks
10 8,382,295 Optical assembly for electronic devices
11 8,381,969 Method and system for using machine-readable codes to perform a transaction