Yahoo patent applications published on 26 January 2012

4 US patent applications published on 26 January 2012 and assigned to Yahoo

1 20120023457 PRESENTATION OF ADVERTISEMENTS BASED ON USER INTERACTIVITY WITH A WEB PAGE
2 20120023114 UNIVERSAL DEVICE IDENTIFIER FOR GLOBALLY IDENTIFYING AND BINDING DISPARATE DEVICE IDENTIFIERS TO THE SAME MOBILE DEVICE
3 20120022937 ADVERTISEMENT BRAND ENGAGEMENT VALUE
4 20120020522 MOBILE IMAGING DEVICE AS NAVIGATOR