Delong MA

Follow

Person

Beijing, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Method and device of identifying fracture
- Patent number 10,845,495
- Issue date Nov 24, 2020
- PetroChina Company Limited
- Chao Feng
- G01 - MEASURING TESTING
Information Patent Grant
Method and apparatus for testing residual stress in coatings
- Patent number 10,222,343
- Issue date Mar 5, 2019
- China Build Material Test & Certification Group Co., Ltd.
- Yiwang Bao
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
Method And Device Of Identifying Fracture
- Publication number 20190041535
- Publication date Feb 7, 2019
- Chao Feng
- E21 - EARTH DRILLING MINING
Information Patent Application
METHOD AND APPARATUS FOR TESTING RESIDUAL STRESS IN COATINGS
- Publication number 20170241925
- Publication date Aug 24, 2017
- China Building Material Test & Certification Group Co., Ltd.
- Yiwang BAO
- G01 - MEASURING TESTING