Google patents granted on 15 September 2009

4 US patents granted on 15 September 2009 and assigned to Google

1 7,590,691 Indirect subscriptions to top N lists of content feeds
2 7,590,628 Determining document subject by using title and anchor text of related documents
3 7,590,620 System and method for analyzing data records
4 7,590,562 Product recommendations based on collaborative filtering of user data