Xie Sun

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Florham Park, NJ, US

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Patents Grantslast 30 patents

Information Patent Grant
Systems and methods for assessment of non-native speech using vowel...
- Patent number 9,262,941
- Issue date Feb 16, 2016
- Educational Testing Services
- Lei Chen
- G10 - MUSICAL INSTRUMENTS ACOUSTICS

Patents Applicationslast 30 patents

Information Patent Application
Systems and Methods for Assessment of Non-Native Speech Using Vowel...
- Publication number 20120016672
- Publication date Jan 19, 2012
- Lei Chen
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS