Warren Tan
11Patents
8h-index
21Co-inventors
72Inventor score
Filing activity: Jul 21, 1994 → Feb 21, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5844218A | Method and system for using an application programmable smart card for financial transactions in multiple countries | Physics | 442 | Expired |
| US6687714B1 | Method and system for managing transaction card data | Physics | 99 | Expired |
| US7484089B1 | Method and system for certificate delivery and management | Electricity | 73 | Expired |
| US7904946B1 | Methods and systems for secure user authentication | Electricity | 60 | Active |
| US9002750B1 | Methods and systems for secure user authentication | Electricity | 51 | Active |
| USD364386S | Customer identification terminal | General | 33 | Expired |
| US5768386A | Method and system for encrypting input from a touch screen | Physics | 26 | Expired |
| US9768963B2 | Methods and systems for secure user authentication | Electricity | 18 | Active |
| US11394553B1 | Methods and systems for secure user authentication | Electricity | 1 | Active |
| US12101409B1 | Methods and systems for secure user authentication | Electricity | 0 | Active |
| US11917069B1 | Methods and systems for secure user authentication | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.