Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10410103 | Two-dimensional dot matrix barcode encoding and identifying methods | Zhiguo Chang | 2019-09-10 |
| 10410104 | Two-dimensional dot matrix barcode encoding and reading methods | Zhiguo Chang | 2019-09-10 |
| 9665759 | Decoding method for matrix two-dimensional code | Zhiguo Chang, Yingfeng Lv | 2017-05-30 |
| 9043343 | Identifier assigning method, identifier parsing method, and multimedia reading | Yingfeng Lv | 2015-05-26 |
| 7997502 | Two-dimensional code and its decoding method, and the printing publication using this two-dimensional code | Yingfeng Lv, Wei Zhang, Guangyi Gu | 2011-08-16 |