1
Wolfgang Becker, Alexander Hierweger, Hansjurgen Merkle, Erwin Lob, Joseph Lass, Wittich Kaule: Data carrier having an optical authenticity feature and methods for producing and testing said data carrier. GAO Gesellschaft fur Automation und Organisation mbH, Bacon & Thomas, August 23, 1988: US04765656 (165 worldwide citation)

The present invention relates to a data carrier (identification card, bank card, credit card, etc.) in which information is provided in an inner volume area by means of a laser beam, the information being visible in the form of changes in the optical properties of the carrier material due to an irre ...


2
Gunter Pauli, Gunter Krause, Erwin Lob: Method and means for determining the state and/or genuineness of flat articles. Gao Gesellschaft fur Automation and Organisation mbH, Neuman Williams Anderson & Olson, March 6, 1984: US04435834 (93 worldwide citation)

The invention discloses a method and an apparatus for determining the condition or genuineness of flat articles, in particular bank-notes. The bank-note passes through a test station in which a large portion of its surface is scanned by a scanning system as it passes through. The electric signals ge ...


3
Erwin Lob, Hansjurgen Merkle, Alexander Hierweger, Wolfgang Killar, Wittlich Kaule: Multilayer card-shaped data carrier and method for producing same. Gesellschaft Fur Automation Und Organisation mbH, Keck Mahin & Cate, April 19, 1994: US05304789 (80 worldwide citation)

A multilayer card-shaped data carrier has a layer appearing black in the visible wave range, but transparent or permeable to electromagnetic radiation in the invisible wavelength spectrum outside the wavelengths substantially between about 400 and 700 nanometers. The data carrier also has data marki ...


4
Joseph Lass, Hansjurgen Merkle, Wolfgang Becker, Werner Herget, Erwin Lob: Identification card with a visible authenticity feature and a method of manufacturing said card. GAO Gesellschaft fur Automation und Organisation mbH, Bacon & Thomas, August 23, 1988: US04766026 (45 worldwide citation)

Information is provided in a multilayer identification card by means of a laser beam. This information is recorded by irreversibly changing (blackening) transparent synthetic material. Synthetic materials which blacken at different intensity values are used for the individual card layers. By control ...


5
Joseph Lass, Hansjurgen Merkle, Wolfgang Becker, Werner Herget, Erwin Lob: Identification card with a visible authenticity feature. GAO Gesellschaft fur Automation und Organisation mbH, Bacon & Thomas, January 16, 1990: US04894110 (35 worldwide citation)

Information is provided in a multilayer identification card by means of a laser beam. This information is recorded by irreversibly changing (blackening) transparent synthetic material. Synthetic materials which blacked at different intensity values are used for the individual card layers. By control ...


6
Hansjurgen Merkle, Joseph Lass, Alexander Hierweger, Wolfgang Killar, Erwin Lob: Multilayer data carrier and methods for writing on a multilayer data carrier. GAO Gesellschaft f Automation v Organ MBH, Robert J Koch, March 29, 1994: US05298922 (34 worldwide citation)

A multilayer identity card exhibits an outer color layer of a first color and an inner color layer of a second color to allow for identity cards and the like to be written on in several colors. While the outer color layer absorbs virtually no laser beam light used for writing, the second, inner colo ...


7
Joseph Lass, Hansjurgen Merkle, Alexander Hierweger, Erwin Lob: Multilayer identity card usable as a printing block and a method of producing it. GAO Gesellschaft fur Automation und Organisation mbH, Bacon & Thomas, April 9, 1991: US05005872 (30 worldwide citation)

An identity card is provided with a character set usable as a printing block, whereby the "natural foamability" that laser action brings about in the plastic materials commonly used for identity cards, such as PVC and polycarbonate, is exploited to obtain a relief height sufficient for a clear impre ...


8
Thomas Maurer, Erwin Lob, Peter Schweiger: Method of producing identification cards and a device for carrying out same. GAO Gesellschaft fur Automation und Organisation mbH, Andrus Sceales Starke & Sawall, August 21, 1984: US04467209 (28 worldwide citation)

A method of personalizing identification cards having erasable and/or overwritable and non-overwritable data. The neutral identification cards, before being written on, are first fed from an input stack to a unit in which the overwritable storage medium, e.g. a magnetic stripe, is written on with th ...


9
Joseph Lass, Hansjurgen Merkle, Alexander Hierweger, Erwin Lob: Method of making a multilayer identification card usable as a printing block. GAO Gesellschaft fur Automation und Organisation mbH, Bacon & Thomas, June 16, 1992: US05122813 (23 worldwide citation)

An identity card is provided with a character set usable as a printing block, whereby the "natural foamability" that laser action brings about in the plastic materials commonly used for identity cards, such as PVC and polycarbonate, is exploited to obtain a relief height sufficient for a clear impre ...


10
Erwin Lob, Gunther Endres, Josef Riedl, Joseph Lass: Identification document. Giesecke & Devrient, Bacon & Thomas PLLC, October 24, 2000: US06135503 (22 worldwide citation)

The invention relates to an identification document, such as a passport or the like, which consists of a plurality of sheets bound into a book at a seam. At least one of the sheets forms a data sheet provided with information and consisting at least of two layers, at least one of the layers being tr ...