Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11536377 | Gate valve capable of being opened and closed by using elastic force | — | 2022-12-27 |
| 10208870 | Solenoid valve | Cheng MA | 2019-02-19 |
| 9982787 | Gate valve with secure sealing mechanism | LI-CHUAN YANG | 2018-05-29 |
| 9638335 | Double sealing valve | — | 2017-05-02 |
| 9464721 | Gate valve with secure sealing mechanism | LI-CHUAN YANG | 2016-10-11 |
| 8490203 | Fingerprinting based entity extraction | Liwei Ren | 2013-07-16 |
| 8468595 | Content filtering prior to data encryption | Fei Huang, Liwei Ren | 2013-06-18 |
| 8321434 | Two tiered architecture of named entity recognition engine | Liwei Ren | 2012-11-27 |
| 8171002 | Matching engine with signature generation | Liwei Ren, Dehua Tan, Fei Huang, Aiguo Dong | 2012-05-01 |
| 8140664 | Graphical user interface based sensitive information and internal information vulnerability management system | Fei Huang, Liwei Ren, Aiguo Dong | 2012-03-20 |
| 8051487 | Cascading security architecture | Fei Huang, Liwei Ren | 2011-11-01 |
| 7950062 | Fingerprinting based entity extraction | Liwei Ren | 2011-05-24 |
| 7860853 | Document matching engine using asymmetric signature generation | Liwei Ren, Fei Huang, Yingqiang Lin | 2010-12-28 |
| 7747642 | Matching engine for querying relevant documents | Liwei Ren, Fei Huang, Aiguo Dong, Dehua Tan | 2010-06-29 |
| 7516130 | Matching engine with signature generation | Liwei Ren, Dehua Tan, Fei Huang, Aiguo Dong | 2009-04-07 |