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:
Apr. 10, 2007
Filed:
Nov. 05, 2003
Helge Bettina Kniess, Weiterstadt, DE;
Gerhard Pfaff, Muenster, DE;
Matthias Kuntz, Seeheim-Jugenheim, DE;
Hans-juergen Brehm, Lindenfels, DE;
Reiner Delp, Darmstadt, DE;
Helge Bettina Kniess, Weiterstadt, DE;
Gerhard Pfaff, Muenster, DE;
Matthias Kuntz, Seeheim-Jugenheim, DE;
Hans-Juergen Brehm, Lindenfels, DE;
Reiner Delp, Darmstadt, DE;
Merck Patent GmbH, Darmstadt, DE;
Abstract
Laser-markable pigments which are distinguished by the fact that an absorber is coated with a marker and optionally with a diffusion barrier are described. Further, processes for the preparation of the laser-markable pigments and methods for using them are described. The absorber is preferably an inorganic pigment or a filler. The marker is preferably an intrinsically laser-markable polymer, particularly a polyethylene terephthalate, acrylonitrile-butadiene-styrene, polystyrene, polyphenylene ether, liquid-crystal polymer or polyphenylene sulfide.