Douglas Earnest

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San Antonio, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Omni-directional guided wave testing of plate structures using prob...
- Patent number 10,739,314
- Issue date Aug 11, 2020
- Southwest Research Institute
- Sergey A. Vinogradov
- G01 - MEASURING TESTING
Information Patent Grant
Transverse crack detection in rail head using low frequency eddy cu...
- Patent number 6,768,298
- Issue date Jul 27, 2004
- Transportation Technology Center, Inc.
- Gopichand Katragadda
- B61 - RAILWAYS

Patents Applicationslast 30 patents

Information Patent Application
Apparatus and Method to Detect Residual Stress Around Cold Expanded...
- Publication number 20240280424
- Publication date Aug 22, 2024
- SOUTHWEST RESEARCH INSTITUTE
- Xin Chen
- G01 - MEASURING TESTING
Information Patent Application
Reference-Free Load-Modulated Longitudinal Rail Stress Measurement...
- Publication number 20230393098
- Publication date Dec 7, 2023
- SOUTHWEST RESEARCH INSTITUTE
- Xin Chen
- G01 - MEASURING TESTING
Information Patent Application
Omni-Directional Guided Wave Testing of Plate Structures Using Prob...
- Publication number 20190187104
- Publication date Jun 20, 2019
- Sergey A. VINOGRADOV
- G01 - MEASURING TESTING
Information Patent Application
Transverse crack detection in rail head using low frequency eddy cu...
- Publication number 20030020469
- Publication date Jan 30, 2003
- Gopichand Katragadda
- B61 - RAILWAYS