Inventor
DANG CHANGJIU
US6 patents
⚠️ This page may combine multiple inventors who share the name “DANG CHANGJIU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
EXPRO METERS INC
4 patentsUS7624651B2Dec 1, 2009
Apparatus and method for attenuating acoustic waves in pipe walls for clamp-on ultrasonic flow meter
EXPRO METERS INC63 citations96
US7624650B2Dec 1, 2009
Apparatus and method for attenuating acoustic waves propagating within a pipe wall
EXPRO METERS INC34 citations91
US7673526B2Mar 9, 2010
Apparatus and method of lensing an ultrasonic beam for an ultrasonic flow meter
EXPRO METERS INC13 citations82
US11650089B2May 16, 2023
Apparatus and method for measuring fluid flow parameters
EXPRO METERS INC2 citations65