Inventor

HIERWEGER ALEXANDER

DE5 patents

⚠️ This page may combine multiple inventors who share the name “HIERWEGER ALEXANDER”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

GAO GES AUTOMATION ORG

4 patents

US4765656AAug 23, 1988

Data carrier having an optical authenticity feature and methods for producing and testing said data carrier

GAO GES AUTOMATION ORG379 citations98

US5122813AJun 16, 1992

Method of making a multilayer identification card usable as a printing block

GAO GES AUTOMATION ORG45 citations94

US5005872AApr 9, 1991

Multilayer identity card usable as a printing block and a method of producing it

GAO GES AUTOMATION ORG59 citations94

US5304789AApr 19, 1994

Multilayer card-shaped data carrier and method for producing same

GAO GES AUTOMATION ORG132 citations93

GAO GES F AUTOMATION V ORGAN M

1 patent

US5298922AMar 29, 1994

Multilayer data carrier and methods for writing on a multilayer data carrier

GAO GES F AUTOMATION V ORGAN M86 citations91