Google patents granted on 04 January 2011

7 US patents granted on 04 January 2011 and assigned to Google

1 7,865,553 Chat system without topic-specific rooms
2 7,865,536 Garbage collecting systems and methods
3 7,865,497 Sitemap generation where last modified time is not available to a network crawler
4 7,865,399 Distributed electronic commerce system with centralized point of purchase
5 7,865,301 Secondary map in digital mapping system
6 7,864,985 Automatic operator-induced artifact detection in document images
7 7,864,527 Systems and methods for close coupled cooling