Yahoo patents granted on 27 August 2013

10 US patents granted on 27 August 2013 and assigned to Yahoo

1 8,522,327 Multi-step captcha with serial time-consuming decryption of puzzles
2 8,522,289 Distributed automatic recording of live event
3 8,522,257 System and method for context information retrieval
4 8,521,832 Mobile monetization
5 8,521,754 System and methods for web data transformation sourcing
6 8,521,734 Search engine with augmented relevance ranking by community participation
7 8,521,731 Systems and methods for query expansion in sponsored search
8 8,521,679 Classification recommendation based on social actions
9 8,521,588 Method for optimum placement of advertisements on a web page
10 8,521,507 Bootstrapping text classifiers by language adaptation