Xi Xiang Zhang

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Tseung Kwan O, HK

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Patents Grantslast 30 patents

Information Patent Grant
Acoustic attenuation materials
- Patent number 7,249,653
- Issue date Jul 31, 2007
- RSM Technologies Limited
- Ping Sheng
- G10 - MUSICAL INSTRUMENTS ACOUSTICS

Patents Applicationslast 30 patents

Information Patent Application
Acoustic attenuation materials
- Publication number 20050000751
- Publication date Jan 6, 2005
- RSM Technologies Limited
- Ping Sheng
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
Acoustic attenuation materials
- Publication number 20030062217
- Publication date Apr 3, 2003
- Ping Sheng
- G10 - MUSICAL INSTRUMENTS ACOUSTICS