Na Liu

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Suzhou, CN

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Patents Grantslast 30 patents

Information Patent Grant
Speaker adapter, and dual core speaker assembly
- Patent number 11,924,604
- Issue date Mar 5, 2024
- Harman International Industries, Incorporated
- Bo Sun
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Loudspeaker-purpose vibrating cone and loudspeaker
- Patent number 10,805,733
- Issue date Oct 13, 2020
- Harman International Industries, Incorporated
- Kaifeng Sun
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
SPEAKER ADAPTER, AND DUAL CORE SPEAKER ASSEMBLY
- Publication number 20220232315
- Publication date Jul 21, 2022
- HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
- Bo SUN
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Loudspeaker-Purpose Vibrating Cone and Loudspeaker
- Publication number 20200007990
- Publication date Jan 2, 2020
- HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
- Kaifeng Sun
- H04 - ELECTRIC COMMUNICATION TECHNIQUE