Please note that most of these are now assigned to Facebook, Inc.
- US Patent 8,219,500: System and method for managing information flow between members of an online social network
- US Patent 8,010,458: System and method for managing information flow between members of an online social network
- US Patent 7,890,501: Visual tags for search results generated from social network information
- US Patent 7,788,260: Ranking search results based on the frequency of clicks on the search results by members of a social network who are within a predetermined degree of separation
- US Patent 7,606,687: Proximity search methods using tiles to represent geographical zones
- US Patent 7,478,078: Method for sharing relationship information stored in a social network database with third party databases
Search for more at USPTO