Yahoo patent applications published on 29 November 2012

5 US patent applications published on 29 November 2012 and assigned to Yahoo

1 20120303623 SYSTEM FOR INCREMENTALLY CLUSTERING NEWS STORIES
2 20120303454 METHODS AND SYSTEMS FOR TARGETING ADVERTISEMENTS ON LOGIN PAGES
3 20120303453 METHODS AND SYSTEMS FOR SECURELY TARGETING ADVERTISEMENTS ON LOGIN PAGES
4 20120303417 REALTIME PRICE SYTEM
5 20120299960 MOBILE IMAGING DEVICE AS NAVIGATOR