Inventor · disambiguated record
Zhiguo Chang
Also filed as: CHANG ZHIGUO
6 granted patents·3 pending applications·48 citations·filing 2004–2018
78Inventor score
Top patents by PatentIndex Score
9 records- 0182US7264174B22D coding and decoding barcode and its method thereofSHENZHEN SYSCAN TECHNOLOGY CO·Filed 2004·Granted Sep 4, 2007·38 cites·10 claims
- 0275US10410104B2Two-dimensional dot matrix barcode encoding and reading methodsSHENZHEN MPR TECH CO LTD·Filed 2018·Granted Sep 10, 2019·3 cites·10 claims
- 0372US7497380B22D coding and decoding barcode and its method thereofSHENZHEN SYSCAN TECHNOLOGY CO·Filed 2007·Granted Mar 3, 2009·5 cites·20 claims
- 0463US10410103B2Two-dimensional dot matrix barcode encoding and identifying methodsSHENZHEN MPR TECH CO LTD·Filed 2018·Granted Sep 10, 2019·1 cites·10 claims
- 0549US7386189B2Scanning device with a positioning sensor and a corresponding processing method to obtain imagesSHENZHEN SYSCAN TECHNOLOGY CO·Filed 2004·Granted Jun 10, 2008·1 cites·19 claims
- 0648US2007084933A1Information Card with Multiple Storage Media and a Device and Method for Reading and Writing Information in Said CardSHENZHEN SYSCAN TECHNOLOGY CO·Filed 2006·Application pending·0 cites
- 0742US2007272755A1Two-directional bar code symbol and its encoding & decoding methodSHENZHEN SYSCAN TECHNOLOGY CO·Filed 2007·Application pending·0 cites
- 0842US2005092844A1Information card with multiple storage media and a device and method for reading and writing information in said cardSHENZHEN SYSCAN TECHNOLOGY CO·Filed 2004·Application pending·0 cites
- 0937US9665759B2Decoding method for matrix two-dimensional codeSHENZHEN MPR TECH CO LTD·Filed 2013·Granted May 30, 2017·0 cites·11 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →