Inventor
CHANG ZHIGUO
CN6 patents
⚠️ This page may combine multiple inventors who share the name “CHANG ZHIGUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SHENZHEN SYSCAN TECHNOLOGY CO
3 patentsUS7264174B2Sep 4, 2007
2D coding and decoding barcode and its method thereof
SHENZHEN SYSCAN TECHNOLOGY CO38 citations90
US7497380B2Mar 3, 2009
2D coding and decoding barcode and its method thereof
SHENZHEN SYSCAN TECHNOLOGY CO5 citations60
US7386189B2Jun 10, 2008
Scanning device with a positioning sensor and a corresponding processing method to obtain images
SHENZHEN SYSCAN TECHNOLOGY CO1 citations49
SHENZHEN MPR TECH CO LTD
3 patentsUS10410104B2Sep 10, 2019
Two-dimensional dot matrix barcode encoding and reading methods
SHENZHEN MPR TECH CO LTD3 citations67
US10410103B2Sep 10, 2019
Two-dimensional dot matrix barcode encoding and identifying methods
SHENZHEN MPR TECH CO LTD1 citations56
US9665759B2May 30, 2017
Decoding method for matrix two-dimensional code
SHENZHEN MPR TECH CO LTD0 citations36