Chi Wai Yung

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Hong Kong, CN

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Patents Grantslast 30 patents

Information Patent Grant
Melody retrieval system
- Patent number 7,919,706
- Issue date Apr 5, 2011
- Perception Digital Technology (BVI) Limited
- Chi-ying Tsui
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Digital multimedia jukebox
- Patent number 7,548,851
- Issue date Jun 16, 2009
- Jack Lau
- G11 - INFORMATION STORAGE
Information Patent Grant
System and method for musical instrument education
- Patent number 7,332,664
- Issue date Feb 19, 2008
- Ricamy Technology Ltd.
- Chi Wai Yung
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS

Patents Applicationslast 30 patents

Information Patent Application
MELODY RETRIEVAL SYSTEM
- Publication number 20080148924
- Publication date Jun 26, 2008
- PERCEPTION DIGITAL TECHNOLOGY (BVI) LIMITED
- Chi-Ying Tsui
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
Melody retrieval system
- Publication number 20070163425
- Publication date Jul 19, 2007
- Chi-Ying Tsui
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
SYSTEM AND METHOD FOR MUSICAL INSTRUMENT EDUCATION
- Publication number 20060196343
- Publication date Sep 7, 2006
- RICAMY TECHNOLOGY LIMITED
- Chi Wai Yung
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS