Sijun Chen

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Shanghai, CN

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Patents Grantslast 30 patents

Information Patent Grant
High-efficiency low-voltage-power-supply high-power-output audio dr...
- Patent number 9,571,926
- Issue date Feb 14, 2017
- Christopher Technology (Shanghai) Limited
- Bai Jianxiong
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
HIGH-EFFICIENCY LOW-VOLTAGE-POWER-SUPPLY HIGH-POWER-OUTPUT AUDIO DR...
- Publication number 20120257771
- Publication date Oct 11, 2012
- CHIPHOMER TECHNOLOGY (SHANGHAI) LIMITED
- Jianxiong Bai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE