Qijin JIAO

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Shandong, CN

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Patents Grantslast 30 patents

Information Patent Grant
Tablet woofer and electronic device using same
- Patent number 10,440,478
- Issue date Oct 8, 2019
- GOERTEK INC.
- Chao Jiang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Flat plate-type bass loudspeaker
- Patent number 9,788,121
- Issue date Oct 10, 2017
- GOERTEK INC.
- Chao Jiang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Tablet woofer and electronic device using same
- Patent number 9,769,572
- Issue date Sep 19, 2017
- GOERTEK INC.
- Chao Jiang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Tablet woofer
- Patent number 9,648,424
- Issue date May 9, 2017
- GOERTEK INC.
- Chao Jiang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Tablet Woofer and Electronic Device Using Same
- Publication number 20170339493
- Publication date Nov 23, 2017
- GOERTEK INC.
- Chao JIANG
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Tablet Woofer and Electronic Device Using Same
- Publication number 20160127835
- Publication date May 5, 2016
- GOERTEK INC.
- Chao JIANG
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
FLAT PLATE-TYPE BASS LOUDSPEAKER
- Publication number 20160080869
- Publication date Mar 17, 2016
- GOERTEK INC.
- Chao JIANG
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Tablet Woofer
- Publication number 20160073201
- Publication date Mar 10, 2016
- Chao JIANG
- H04 - ELECTRIC COMMUNICATION TECHNIQUE