Google patents granted on 01 March 2011

4 US patents granted on 01 March 2011 and assigned to Google

1 7,900,225 Association of ads with tagged audiovisual content
2 7,899,869 Broadcasting in chat system without topic-specific rooms
3 7,899,801 Determining content to be provided by an entity for rendering via a resource in a target document or notifying an alternative entity of the availability of the resource
4 7,899,249 Media material analysis of continuing article portions