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INNOVIA FILMS SARL
| INNOVIA FILMS SARL Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20110043821 | METHOD OF AUTHENTICATING A POLYMER FILM - A method of authenticating a polymer film comprises measuring the thickness of a layer therein by white light interferometry and/or measuring the birefringence of a layer therein. The method, and devices to carry out the method, may be used in security applications, for example to test for counterfeit bank notes. | 02-24-2011 |