The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 12, 2013
Filed:
May. 31, 2010
Olli-heikki Huttunen, Oulu, FI;
Johanna Hiitola-keinänen, Oulu, FI;
Olli-Heikki Huttunen, Oulu, FI;
Johanna Hiitola-Keinänen, Oulu, FI;
Valtion teknillinen tutkimuskeskus, VTT, FI;
Abstract
Method of creating a copied fine structure producing a diffractive optical effect onto the target surface, includes using a transfer foil manufactured from thermoplastic, on the surface of which is first created an original fine structure producing a diffractive optical effect; placing the transfer foil on the target surface with the original fine structure is in contact with the target surface; heating the transfer foil to a temperature close to the glass transition temperature of the material of the transfer foil; simultaneously during the heating or immediately after the heating lightly pressing the transfer foil against the target surface, whereby material from the transfer foil adheres to the target surface; and removing the transfer foil from the target surface, whereby the adhered material makes up a copied fine structure, which is a mirror image of the original fine structure of the transfer foil.