Liangju Lu

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Eden Prairie, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for measuring fluid process variable in a well
- Patent number 9,470,084
- Issue date Oct 18, 2016
- Rosemount Inc.
- Robert C. Hedtke
- G01 - MEASURING TESTING
Information Patent Grant
Method and apparatus for pressure measurement using fill tube
- Patent number 7,954,383
- Issue date Jun 7, 2011
- Rosemount Inc.
- Charles R. Willcox
- G01 - MEASURING TESTING
Information Patent Grant
Method and apparatus for pressure measurement using quartz crystal
- Patent number 7,870,791
- Issue date Jan 18, 2011
- Rosemount Inc.
- Robert C. Hedtke
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
METHOD AND APPARATUS FOR MEASURING FLUID PROCESS VARIABLE IN A WELL
- Publication number 20120036924
- Publication date Feb 16, 2012
- Robert C. Hedtke
- E21 - EARTH DRILLING MINING
Information Patent Application
METHOD AND APPARATUS FOR PRESSURE MEASUREMENT USING QUARTZ CRYSTAL
- Publication number 20100132471
- Publication date Jun 3, 2010
- Robert C. Hedtke
- G01 - MEASURING TESTING
Information Patent Application
METHOD AND APPARATUS FOR PRESSURE MEASUREMENT USING FILL TUBE
- Publication number 20100132472
- Publication date Jun 3, 2010
- Charles R. Willcox
- G01 - MEASURING TESTING
Information Patent Application
Fiber connector and adapter
- Publication number 20080279507
- Publication date Nov 13, 2008
- ADC Telecommunications, Inc.
- Lu Liang-Ju
- G02 - OPTICS