Qinghua Chen

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Shenzhen, CN

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Patents Grantslast 30 patents

Information Patent Grant
Optical switch and optical switch array
- Patent number 9,042,689
- Issue date May 26, 2015
- Huawei Technologies Co., Ltd.
- Qinghua Chen
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL SWITCH AND OPTICAL SWITCH ARRAY
- Publication number 20130243372
- Publication date Sep 19, 2013
- Huawei Technologies Co., Ltd
- Qinghua Chen
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...