Weiwei Zhao

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for evaluating accuracy in positioning a recei...
- Patent number 11,493,595
- Issue date Nov 8, 2022
- China National Petroleum Corporation
- Haishen Yang
- G01 - MEASURING TESTING
Information Patent Grant
Display apparatus and method of manufacturing the same
- Patent number 10,274,768
- Issue date Apr 30, 2019
- BOE Technology Group Co., Ltd.
- Nan Ma
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
GEOPHONE LOCATING ACCURACY EVALUATION METHOD AND DEVICE
- Publication number 20200371195
- Publication date Nov 26, 2020
- CHINA NATIONAL PETROLEUM CORPORATION
- Haishen YANG
- G01 - MEASURING TESTING
Information Patent Application
DISPLAY APPARATUS AND METHOD OF MANUFACTURING THE SAME
- Publication number 20180095325
- Publication date Apr 5, 2018
- BOE TECHNOLOGY GROUP CO., LTD.
- Nan Ma
- G02 - OPTICS