Du CHEN

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Katy, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Multi-coil multi-terminal closed-loop geophone accelerometer
- Patent number 9,348,043
- Issue date May 24, 2016
- SAS E&P Ltd.
- Zhentang Fu
- B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
Information Patent Grant
Geographic information data base engine
- Patent number 7,430,340
- Issue date Sep 30, 2008
- Advanced Tracking Technologies, Inc.
- Paul M. Glass
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS

Patents Applicationslast 30 patents

Information Patent Application
MULTI-COIL MULTI-TERMINAL CLOSED-LOOP GEOPHONE ACCELEROMETER
- Publication number 20140293752
- Publication date Oct 2, 2014
- SAS E&P LTD.
- Zhentang FU
- B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
Information Patent Application
Geographic information data base engine
- Publication number 20050288836
- Publication date Dec 29, 2005
- Paul M. Glass
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS