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Patents Grantslast 30 patents

Information Patent Grant
Sound producing device
- Patent number 11,223,897
- Issue date Jan 11, 2022
- Suzhou Yichuan Technology Co., LTD.
- Xiaoming Chen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Thin-type phone receiver
- Patent number 11,070,901
- Issue date Jul 20, 2021
- SUZHOU YICHUAN ELECTRONIC TECHNOLOGY CO., LTD
- Yiqian Wu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
A THIN-TYPE PHONE RECEIVER
- Publication number 20210127192
- Publication date Apr 29, 2021
- Suzhou Yichuan Acoustic Technology Co., LTD.
- Yiqian WU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SOUND PRODUCING DEVICE
- Publication number 20200366984
- Publication date Nov 19, 2020
- Suzhou Yichuan Acoustic Technology Co., LTD.
- Xiaoming CHEN
- H04 - ELECTRIC COMMUNICATION TECHNIQUE