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 (167 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
Yahya Haghiri Tehrani: Method for making an identification card having features for testing in incident and transmitted light. GAO Gesellschaft fur Automation und Organisation mbH, Stevens Davis Miller & Mosher, December 8, 1987: US04711690 (87 worldwide citation)

The multilayer identification card comprises several synthetic layers compounded by the effects of heat and pressure. An inside interface of at least one of these layers exhibits depressions which are filled with the material of the adjacent layer during the laminating process. The adjacent layers a ...


3
Wittich Kaule, Gerhard Stenzel: Security paper with authenticity features in the form of substances luminescing only in the invisible region of the optical spectrum and process for testing the same. Gao Gesellschaft fur Automation und Organisation mbH, Schwartz Jeffery Schwaab Mack Blumenthal & Koch, May 29, 1984: US04451521 (86 worldwide citation)

Security paper with luminescing authenticity characteristics which after excitation with invisible light emit exclusively invisible light of different wavelengths as authenticity signal. The luminophores can be included in the printing ink used or they can be added to the paper material in the manuf ...


4
Joachim Hoppe: Method for producing an identification card with an integrated circuit. GAO Gesellschaft fur Automation und Organisation mbH, Sandler & Greenblum, May 24, 1988: US04746392 (84 worldwide citation)

A multilayer identification card containing an IC module in a cavity. The cavity is filled with a polymer with a consistency ranging from liquid to pasty before the card compound is laminated using pressure and heat. During lamination, the polymer completely fills in the cavity around the IC module, ...


5
Wittich Kaule: Security document and a method for producing it. GAO Gesellschaft fur Automation und Organisation mbH, Bacon & Thomas, May 14, 1996: US05516153 (75 worldwide citation)

A security element for use in a security document such as a bank note, identity card or the like includes at least a partial metallic coating on a substrate and wherein the metallic coating includes recesses in the forms of characters or patterns that are visually recognizable at least in transmitte ...


6
Yahya Haghiri Tehrani: Chip card and a method for producing it. GAO Gesellschaft Fur Automation und Organisation mbH, Bacon & Thomas, October 14, 1997: US05677524 (74 worldwide citation)

On a check card having a mini chip card disposed detachably in an adapted recess the mini chip card is fixed in position by at least one fastening element provided on the card surface. After a first punching operation in which the mini chip card is still connected with the card body by bridges the f ...


7
Joachim Hoppe, Yahya Haghiri Tehrani: Identification card with IC chip and a method for manufacturing the same. GAO Gesellschaft fur Automation und Organisation mbH, Neuman Williams Anderson & Olson, November 29, 1983: US04417413 (74 worldwide citation)

An identification card incorporating an integrated circuit (IC) chip for processing electric signals incorporates a separate supporting element for the IC chip. The supporting element is mounted in a window of one corner of the identification card to avoid the principal axis of stress. The chip supp ...


8
Christoph Heckenkamp, Wittich Kaule, Gerhard Stenzel: Data carrier having an optically variable element and methods for producing it. GAO Gesellschaft fur Automation und Organisation mbH, Andrus Sceales Starke & Sawall, September 1, 1998: US05801857 (71 worldwide citation)

The invention relates to a system comprising a series of data carriers, in particular identity cards, papers of value or the like, whereby the data carriers belonging to the system exhibit diffraction structures containing standard information and parts of the series are changed by additional measur ...


9
Yahya Haghiri Tehrani: Data carrier having an integrated circuit and a method for producing the same. GAO Gesellschaft fur Automation und Organisation mbH, Bacon & Thomas, January 30, 1990: US04897534 (64 worldwide citation)

The present invention relates to a data carrier having an integrated circuit and to a method for making the same. During production a carrier element equipped with an integrated circuit and contact surfaces is inserted into a recess in the data carrier blank. To allow for the carrier element to be f ...


10
Yahya Haghiri Tehrani, Joachim Hoppe: Identification card with an IC-module and method for producing it. GAO Gesellschaft fur Automation und Organisation mbH, Andrus Sceales Starke & Sawall, May 22, 1984: US04450024 (64 worldwide citation)

An identification card equipped with an integrated circuit, in which the circuit along with its connection leads is arranged on a carrier element which is embeddedly enclosed by the card on all sides by use of the hot lamination technique. In order to protect the sensitive arrangement, the carrier e ...