4 US patent applications published on 28 December 2006 and assigned to Yahoo
| 1 | 20060294311 | Dynamic bloom filter for caching query results |
| 2 | 20060294192 | Access control systems and methods using visibility tokens with automatic propagation |
| 3 | 20060294134 | Trust propagation through both explicit and implicit social networks |
| 4 | 20060294086 | Realtime indexing and search in large, rapidly changing document collections |
