Inventor · disambiguated record
Wai Keung Ching
Also filed as: CHING WAI KEUNG
2 granted patents·1 pending application·0 citations·filing 2018–2022
23Inventor score
Top patents by PatentIndex Score
3 records- 0147US12289405B2Graphical watermark, method and apparatus for generating same, and method and apparatus for authenticating sameI SPRINT INNOVATIONS PTE LTD·Filed 2022·Granted Apr 29, 2025·0 cites·20 claims
- 0239US2021004840A1Product having dual layer identification codes, product traceability and anti-counterfeit authentication method and apparatusBEIJING ANXUNBEN TECH CO LTD·Filed 2019·Application pending·0 cites
- 0329US11288475B2Two-dimensional barcode generating method, verification method, server and two-dimensional barcodeI SPRINT INNOVATIONS PTE LTD·Filed 2018·Granted Mar 29, 2022·0 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →