Patent · US Expired

Identification card

US4544181A · kind A · utility

56Cited by

14References

8Claims

0Family size

Assignee

GAO Gesellschaft für Automation und organisation mbH · DE

Inventors

Thomas Maurer · Munich, DE
Wolfgang Gauch · Otterfing, DE
Ludwig Devrient · Vaterstetten, DE

Key dates

Filing date	Feb 20, 1980
Grant date	Oct 1, 1985
Priority date	—
Expiry date	Feb 20, 2000

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S283/904
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

The invention relates to a multi-layered identification card comprising a card core laminated between cover sheets with user information appearing on the card inlet. At least one of the cover sheets is transparent. The information is provided on the inlet by means of a laser beam being controlled accordingly so as to protect against forgery. When producing the card the information is provided onto the inlet through the transparent cover sheet.

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