| Patents for G06K 19 - Record carriers for use with machines and with at least a part designed to carry digital markings (72,649) |
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| 05/21/1991 | US5018123 Optical information recording medium and method for recording information on said medium and reproducing information therefrom |
| 05/21/1991 | US5018051 IC card having circuit modules for mounting electronic components |
| 05/21/1991 | US5017767 IC card with metal reinforcing plates and grounding lead wire |
| 05/21/1991 | US5017766 Portable electronic apparatus capable of confirming validity of transaction data |
| 05/21/1991 | US5017262 Glass beads |
| 05/21/1991 | US5016919 Check and magnetic strip arrangement |
| 05/16/1991 | WO1991007056A1 Process and device for activating a chip card |
| 05/16/1991 | WO1991006925A1 Optical device |
| 05/16/1991 | WO1990010916A3 Erasable optical wallet-size data card |
| 05/15/1991 | EP0427601A1 Method for authenticating a microprocessor-card, and system for implementing it |
| 05/15/1991 | EP0427600A1 Contact chip card reader |
| 05/15/1991 | EP0426801A1 Security document with embedded security element with visually and mechanically verifiable distinguishing signs. |
| 05/15/1991 | EP0426717A1 Optical memory. |
| 05/14/1991 | US5016212 IC card having system ROM selection inhibit |
| 05/14/1991 | US5016086 IC card |
| 05/14/1991 | US5015834 Information card system communicable in contactless manner |
| 05/08/1991 | EP0426544A1 Method of protection against inhibition of non-authorised writing over specific memory zone of a microprocessor card and device for application |
| 05/08/1991 | EP0426541A1 Method of protection against fraudulent use of a microprocessor card and device for its application |
| 05/08/1991 | EP0426406A2 IC card having an integrated circuit module |
| 05/08/1991 | EP0426293A1 Improvements in or relating to financial transaction cards |
| 05/08/1991 | EP0426271A2 Portable semiconductor storage device |
| 05/08/1991 | EP0426270A2 Portable semiconductor memory device |
| 05/08/1991 | EP0426163A1 Portable type information storing device and information processing device using the same |
| 05/08/1991 | EP0426093A2 Card type recording medium and method of preventing a false use thereof |
| 05/07/1991 | US5014312 Security system for the protection of programming zones of a chip card |
| 05/07/1991 | US5013900 Identification card with integrated circuit |
| 05/07/1991 | US5013898 Data detection, power transfer and power regulation for data storage devices |
| 05/02/1991 | WO1991006068A1 Optimal error-detecting and error-correcting code and apparatus |
| 05/02/1991 | EP0425347A1 Portable electronic device for making a public loyal to a media or similar |
| 05/02/1991 | EP0424726A1 Chipcard |
| 05/02/1991 | DE4033981A1 Memory circuit board with semiconductor recording medium - has SRAM or EEPROM with preset wafer size for estimated storage capacity |
| 05/01/1991 | WO1991006934A1 Method for tagging articles used in conjunction with an electronic article surveillance system, and tags or labels useful in connection therewith |
| 05/01/1991 | WO1991006926A1 Method and apparatus for secure identification and verification |
| 04/25/1991 | WO1991006914A1 Portable electronic device to establish public loyalty to a media or similar |
| 04/24/1991 | EP0424262A1 Portable electronics with connectable components |
| 04/24/1991 | EP0423955A1 Improvements in machine readable cards |
| 04/23/1991 | US5010243 Method of producing an optical recording card having a hologram contained therein |
| 04/23/1991 | US5009486 Form depicting, optical interference authenticating device |
| 04/18/1991 | WO1991002447A3 Method of registering, transferring and storing information |
| 04/18/1991 | DE3924439A1 Traegerelement mit wenigstens einem integrierten schaltkreis, insbesondere zum einbau in chip-karten, sowie verfahren zur herstellung dieser traegerelemente Traegerelement with at least one integrated circuit, in particular for installation in smart cards, as well as processes for preparing these traegerelemente |
| 04/17/1991 | EP0423038A1 Method for authentication of an object by means of electron spin resonance, apparatus for implementing this method and object to be used with it |
| 04/17/1991 | EP0422482A2 Coding device for ulteriorly coding electrically conductive code arrangements |
| 04/17/1991 | EP0422481A2 Electric code reader |
| 04/16/1991 | CA1283227C Method for mounting an integrated circuit on a support, device using said method and its application to an electronic microcircuit card |
| 04/16/1991 | CA1283205C Dual stripe optical data card |
| 04/11/1991 | DE4004196C1 Transponder transferring stored measurement data to interrogator - operates without battery using capacitor charged by rectified HF pulses |
| 04/11/1991 | DE3932505A1 Machine readable data carrier with optically variable element |
| 04/10/1991 | EP0421409A2 Transaction system security method and apparatus |
| 04/10/1991 | EP0420982A1 Optical card having a light-absorbing layer |
| 04/09/1991 | US5006698 Antifraud method and device for a selective access system |
| 04/09/1991 | US5006422 Visual magnetic recording medium and method of making the same |
| 04/09/1991 | US5005873 Identified by irradiating with two different wavelengths of ultraviolet radiation |
| 04/09/1991 | US5005872 Multilayer identity card usable as a printing block and a method of producing it |
| 04/09/1991 | US5005690 Conveyor carriage |
| 04/09/1991 | US5005282 Method of making an electronic memory card |
| 04/09/1991 | CA1282868C Printed circuit card reset switch |
| 04/04/1991 | WO1991004473A1 Circuit for the detection of temperature threshold, of light and of unduly low clock frequency |
| 04/03/1991 | EP0420613A2 Data-written medium |
| 04/03/1991 | EP0420261A2 Record carrier with an optical variable element and method of producing it |
| 04/03/1991 | EP0420030A2 Bar code as well as procedure and device for reading such a code |
| 04/02/1991 | US5005106 Multifunctional card having an electromagnetic wave protection |
| 04/02/1991 | US5004899 Semiconductor card which can be folded |
| 03/27/1991 | EP0418906A2 Card type integrated circuit applicable to systems with different bits |
| 03/27/1991 | EP0418759A2 Magnetic card manufacturing arrangement |
| 03/26/1991 | US5003612 Method of identification of a product for the purpose of preventing fraud and device for carrying out this method |
| 03/26/1991 | US5003600 Diffraction gratings used as identifying markers |
| 03/26/1991 | US5003409 Dual layered magnetic data card with reading and recording apparatus |
| 03/26/1991 | US5002813 Computers, multilayer optical recording device |
| 03/26/1991 | CA1282045C Blister pack for presentation of an article |
| 03/21/1991 | WO1991003747A1 Diffraction grating and method of manufacture |
| 03/20/1991 | EP0417887A2 IC card |
| 03/20/1991 | EP0417648A2 IC card |
| 03/20/1991 | EP0417267A1 Vehicle tire identification system. |
| 03/19/1991 | US5001542 Epoxy resin adhesives, particles with a coating of curing agent with a film, pressure deformable electroconductive particles |
| 03/19/1991 | US5001332 Method and circuit for manipulation-proof devaluation of EEPROMS |
| 03/19/1991 | US5001330 Optically scanned document with fail-safe marking |
| 03/13/1991 | EP0416826A1 Method of identifying information and information member for use in the method |
| 03/13/1991 | EP0416742A2 Retroreflective vehicle identification articles having improved machine legibility |
| 03/12/1991 | US4999742 Electronic module for a small portable object such as a card or a key incorporating an integrated circuit |
| 03/12/1991 | US4999661 Camera having selective functions |
| 03/12/1991 | US4999278 Transmissively read optical recording medium |
| 03/07/1991 | WO1991003028A1 Process for coding and availability of a chip card |
| 03/07/1991 | WO1991003027A1 Identification device with data storage means for code markings |
| 03/07/1991 | WO1991002447A2 Method of registering, transferring and storing information |
| 03/07/1991 | DE4001063A1 Spectacle frame with acoustic transponder - has built=in acoustic signal generator as aid in locating position |
| 03/06/1991 | EP0414966A1 Optical disc recording medium having a microstructure-derived inhomogeneity or anisotropy |
| 03/05/1991 | US4998010 Polygonal information encoding article, process and system |
| 03/05/1991 | US4997791 IC card and method of manufacturing the same |
| 02/28/1991 | DE3928107A1 Verfahren zur kodierung und verfuegbarkeit einer chipkarte A method for encoding and availability of a chip card |
| 02/27/1991 | EP0414316A2 Integrated circuit |
| 02/27/1991 | EP0414314A1 Single-number generation method for micro-chip card and use of same for the cooperation of the card with a host-system |
| 02/27/1991 | EP0413733A1 Token and payment system |
| 02/26/1991 | US4996681 Integral card for protectively enclosing an optical disk and a visual information bearing area |
| 02/26/1991 | US4996411 Method of manufacturing a card having electronic memory and a card obtained by performing said method |
| 02/24/1991 | WO1991003033A1 System for issuing id cards |
| 02/24/1991 | CA2039711A1 Id card issuing system |
| 02/21/1991 | WO1991001892A1 Ic card system having function of confirming destroyed data |
| 02/21/1991 | DE3927195A1 Kennzeichnungseinrichtung mit codemarkierungen aufweisenden datentraegern Designator code with labeling containing data medium |
| 02/20/1991 | EP0413634A2 ID card |
| 02/19/1991 | US4995004 RAM/ROM hybrid memory architecture |