Mingfa Chen

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Haikou, CN

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Patents Applicationslast 30 patents

Information Patent Application
Hand-Tearing Texture Anti-fake Method and Product and Material Thereof
- Publication number 20200334514
- Publication date Oct 22, 2020
- PPK (HAINAN) AI CO. LTD [CN/CN]
- Mingfa CHEN
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
PERSONALIZED PATTERN-BASED COMMODITY VIRTUAL CODE ASSIGNMENT METHOD...
- Publication number 20200151528
- Publication date May 14, 2020
- PPK (HAINAN) AI CO. LTD [CN/CN]
- Mingfa CHEN
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
ANTI-COUNTERFEIT PRINTING MATERIAL WITH A HOT STAMPING TEXTURE, SPE...
- Publication number 20130239828
- Publication date Sep 19, 2013
- HAINAN YAYUAN ANTI-FRAUD TECHNIQUE INSTITUTE
- Mingfa Chen
- B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER