Lijun Dong

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Instrument calibration device and calibration method using same
- Patent number 11,262,229
- Issue date Mar 1, 2022
- Beijing Const Instruments Technology Inc.
- Shichun Zhao
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Combination test method by using argon as gross-leak test tracer ga...
- Patent number 10,254,192
- Issue date Apr 9, 2019
- Genglin Wang
- G01 - MEASURING TESTING
Information Patent Grant
Method for helium mass spectrometric fine-leak test based on quanti...
- Patent number 9,671,308
- Issue date Jun 6, 2017
- BEIJING KEYTON ELECTRONIC RELAY CORPORATION LTD.
- Genglin Wang
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
Instrument Calibration Device And Calibration Method Using Same
- Publication number 20200319012
- Publication date Oct 8, 2020
- BEIJING CONST INSTRUMENTS TECHNOLOGY INC.
- Shichun Zhao
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
COMBINATION TEST METHOD BY USING ARGON AS GROSS-LEAK TEST TRACER GA...
- Publication number 20160313207
- Publication date Oct 27, 2016
- Genglin WANG
- G01 - MEASURING TESTING
Information Patent Application
METHOD FOR HELIUM MASS SPECTROMETRIC FINE-LEAK TEST BASED ON QUANTI...
- Publication number 20140222353
- Publication date Aug 7, 2014
- Genglin Wang
- G01 - MEASURING TESTING