Yahoo patents granted on 23 April 2013

6 US patents granted on 23 April 2013 and assigned to Yahoo

1 8,429,177 Using exceptional changes in webgraph snapshots over time for internet entity marking
2 8,429,176 Extending media annotations using collective knowledge
3 8,429,170 System and method for discovering story trends in real time from user generated content
4 8,429,157 Sponsored search results re-ranking based on linking associations
5 8,429,145 Syndicating humor
6 8,429,027 Mobile-based real-time food-and-beverage recommendation system