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Inventor

LU LIANGJU

US7 patents
⚠️ This page may combine multiple inventors who share the name “LU LIANGJU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ROSEMOUNT INC

3 patents
US7567013B2Jul 28, 2009

Vibration power generation

ROSEMOUNT INC22 citations89
US7954383B2Jun 7, 2011

Method and apparatus for pressure measurement using fill tube

ROSEMOUNT INC5 citations62
US7870791B2Jan 18, 2011

Method and apparatus for pressure measurement using quartz crystal

ROSEMOUNT INC4 citations61

SCHUMACHER MARK S

1 patent
US8085156B2Dec 27, 2011

RF cavity-based process fluid sensor

SCHUMACHER MARK S8 citations80

PRINCETEL INC

1 patent
US11143823B2Oct 12, 2021

Fiber optic slip ring with through bore

PRINCETEL INC0 citations50

DETECTOR ELECTRONICS

1 patent
US9506804B2Nov 29, 2016

Open path gas detector

DETECTOR ELECTRONICS1 citations50

HEDTKE ROBERT C

1 patent
US9470084B2Oct 18, 2016

Method and apparatus for measuring fluid process variable in a well

HEDTKE ROBERT C0 citations40