Patent Number: 
Section: claims

1. A process for marking an object surface, the process comprisingarranging in contact with or at a spacing from the object surface a carrier element having on a side facing the object surface at least one metal coating embedded in other coatings, the coatings forming a Low-E coating system, anddirecting a laser beam at the coating system and thereby transferring laser irradiation material from the coating system to the object surface to be marked and adhering the laser irradiation material to the surface as a matrix of metallic nano-particles, whereby the matrix is formed of substances present at the outset in the coating system. 2. The process according to claim 1 wherein the laser irradiation material adhered to the surface has a color determined by the metal of the metal coating, silver or gold or copper being the metal. 3. The process according to claim 1, further comprising the step ofcontrolling a size of the metal nano-particles by varying a pulse duration, pulse energy, beam focusing, or relative velocity between surface of the object and the laser beam. 4. The process according to claim 1, further comprising the step during the laser irradiation ofpositioning the coating system at a spacing from the object surface of up to 200 micrometers. 5. The process according to claim 1, further comprising the step when the object to be marked is transparent ofdirecting the laser beam through the object and the object surface to be marked onto the coating system. 6. The process according to claim 1, further comprising the step ofusing a PET foil as the carrier element, andshaping the carrier element to a curvilinear object surface. 7. The process according to claim 1, further comprising the step ofproducing the markings by relatively moving the laser beam and the object surface. 8. The process according to claim 1, further comprising the step ofoverlapping markings produced by one or more laser pulses such that a resulting color impression is varied by the degree of overlap. 9. The process according to claim 1, further comprising the step ofheating the marked object surface to change a color of the marking.