Visa International
6Patents
1Active
6Granted
34Portfolio score
Filing activity: Oct 25, 1993 → Jan 12, 2005 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5465206A | Electronic bill pay system | Physics | 1,031 | Expired |
| US5621201A | Automated purchasing control system | Physics | 684 | Expired |
| US5477038A | Method and apparatus for distributing currency | Physics | 591 | Expired |
| US5500513A | Automated purchasing control system | Physics | 479 | Expired |
| US6240187A | Key replacement in a public key cryptosystem | Electricity | 216 | Expired |
| US7711639B2 | Pre-funding system and method | Physics | 12 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.