3 US patents granted on 19 May 2009 and assigned to Google
| 1 | 7,536,641 | Web page authoring tool for structured documents |
| 2 | 7,536,408 | Phrase-based indexing in an information retrieval system |
| 3 | 7,536,382 | Query rewriting with entity detection |
Google patents granted on 19 May 2009
