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:
Jun. 12, 2018
Filed:
Mar. 18, 2010
Charles Boegli, Marin, CH;
Steffen Weissmantel, Chemnitz, DE;
Günter Reisse, Chemnitz, DE;
Andy Engel, Colditz, DE;
Rene Boettcher, Mittweida, DE;
Werner Steffen, Stansstad, CH;
Charles Boegli, Marin, CH;
Steffen Weissmantel, Chemnitz, DE;
Günter Reisse, Chemnitz, DE;
Andy Engel, Colditz, DE;
Rene Boettcher, Mittweida, DE;
Werner Steffen, Stansstad, CH;
Boegli-Gravures SA, Marin, CH;
Abstract
In the method for structuring at least one area of a solid body surface provided with a ta-C coating, by means of a first laser, preferably an excimer laser having pulse durations in the nanosecond range, a first structure is produced upon which a second, ripple-like structure is superposed by means of a second laser, preferably having pulse durations in the femtosecond range. Preferentially, the excimer laser structuring is carried out according to the mask projection technique and the femtosecond laser structuring according to the focus technique. This method allows the rational manufacture of very complex, extremely fraud-resistant authentication features and/or of esthetically attractive, optical diffraction effective colored patterns.