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Patent applications and USPTO patent grants for YANG; Hanfei.The latest application filed is for "power converter and control circuit thereof".
Patent | Date |
---|---|
Power Converter And Control Circuit Thereof App 20220209646 - SUN; Shungen ;   et al. | 2022-06-30 |
Isolated Power Supply Control Circuits, Isolated Power Supply And Control Method Thereof App 20220200466 - GUO; Yanmei ;   et al. | 2022-06-23 |
Systems and methods for displaying multiple videos Grant 10,681,393 - Tang , et al. | 2020-06-09 |
Systems And Methods For Displaying Multiple Videos App 20190230386 - Tang; Zhenghua ;   et al. | 2019-07-25 |
Method And System For Search Engine Indexing And Searching Using The Index App 20150199433 - Yang; Hanfei | 2015-07-16 |
Method and system for search engine indexing and searching using the index Grant 8,977,623 - Yang March 10, 2 | 2015-03-10 |
Method and system for search engine indexing and searching using the index App 20100287166 - Yang; Hanfei | 2010-11-11 |
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