Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7409348 | Language listening and speaking training system and method with random test, appropriate shadowing and instant paraphrase functions | Say-Ling Wen, Zechary Chang | 2008-08-05 |
| 7296260 | System and method for composing a multi-lingual instructional software | Sayling Wen, Zechary Chang, Bing Bian | 2007-11-13 |
| 7153139 | Language learning system and method with a visualized pronunciation suggestion | Sayling Wen, Zechary Chang | 2006-12-26 |