Patent · US Expired

Value-bearing document with window

US6508489B2 · kind B2 · utility

16Cited by
13References
17Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMay 7, 2001
Grant dateJan 21, 2003
Priority date
Expiry dateJun 7, 2021

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10S428/916
  • WIPO fieldOther consumer goods
  • WIPO sectorOther fields

Abstract

Proposed is a value-bearing document in which the carrier is provided with a window-like opening which is closed by a cover foil which is transparent at least in a region-wise manner, wherein particularly in the region of the window-like opening, the cover foil can be provided with additional security features, for example diffraction structures.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.