Multi-layer polymeric film and the use thereof

Details Multi-layer polymeric film and the use thereof Multi-layer polymeric film and the use thereof

2006-05-16

2006-05-16

Frech, Karl D. (Department: 2876)

Registers

Records

Particular code pattern

C235S454000, C235S462010

Reexamination Certificate

active

07044396

ABSTRACT:
The use of a multilayer film to store or retrieve information, said information being correlated to the multilayer structure of the film, and said multilayer film comprising at least two different types of layer, wherein each type of layer exhibits a different optical property and wherein the multilayer film comprises a plurality of layers of each of at least two of the different types of layer; a method of storing information, a method of retrieving stored information and a method of protecting against counterfeiting or fraud, which method utilizes said multilayer film.

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patent: WO 99/17288 (1999-04-01), None
patent: WO 99/36262 (1999-07-01), None

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