Identity card with incorporated fibrids

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4324421
SERIAL NO

06105147

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An identity card comprising at least one outer transparent thermoplastic covering layer and a thermoplastic core layer; said card carrying at suitable points on at least one layer information which serves to identify the cardholder; said card further carrying security markings, such as guilloche figures, as a protection against forgeries; said core layer comprising incorporated fibrids. In a preferred embodiment, the core layer is a paper felt enriched with at least 80% by weight fibrids of a polyolefin, such as polyethylene, and comprising from 8 to 14% by weight pigment material, such as titanium dioxide. The core layer may also be provided with a reinforcing layer, such as a randomly perforated paper or polyester film, which is dimensionally stable during lamination of the layers under pressure at elevated temperatures of up to 180.degree. C.

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Patent Owner(s)

  • HOECHST AKTIENGESELLSCHAFT

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Moraw, Roland Wiesbaden, DE 27 562
Pierson, Fritz Taunusstein-Hahn, DE 1 46
Steinau, Peter Mainz, DE 7 114

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