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US6604636B2 · kind B2 · utility
2Cited by
3References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2001 |
| Grant date | Aug 12, 2003 |
| Priority date | — |
| Expiry date | Apr 9, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S209/90
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method of processing documents of value. The method including detecting a visible pattern on at least one side of a document; detecting the response of at least one side of the document to infrared radiation; comparing the detected visible pattern to one or more predetermined patterns and identifying the document if the detected visible pattern is sufficiently similar to the or one of the predetermined patterns; and determining from the response to infrared radiation if the document is authentic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.