Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6810376 | System and methods for determining semantic similarity of sentences | Yi Guan | 2004-10-26 |
| 6687689 | System and methods for document retrieval using natural language-based queries | Chi Shun Cheung, Yi Guan, Yongsheng Yang | 2004-02-03 |