| Patents for G09C 5 - Ciphering or deciphering apparatus or methods not provided for in other groups of this subclass, e.g. involving the concealment or deformation of graphic data such as designs, written or printed messages (2,737) |
|---|
| 08/13/1997 | CN1035642C Record with encoded data |
| 07/29/1997 | US5652794 Device for securing a document in a noisy environment |
| 07/23/1997 | CN2258304Y Device for making display holographic cipher using Moire technique |
| 07/23/1997 | CN2258303Y Device for making concealed holographic cipher using light Mohr effect |
| 07/17/1997 | WO1997025798A1 System for controlling access and distribution of digital property |
| 07/17/1997 | WO1996039302A3 Temporary marking, ultraviolet radiation detection, and printing, all using photoerasable colorants |
| 07/08/1997 | US5646389 Inventory management system using coded re-order information |
| 07/08/1997 | US5645964 Stabilizers |
| 07/02/1997 | EP0782322A2 Method of and apparatus for embedding data into an electronic document |
| 07/01/1997 | US5643701 Electrophotgraphic process utilizing mutable colored composition |
| 07/01/1997 | US5643356 Unsaturated ketone sensitizer bonded to radiation transorber with color, molecular includent and vehicles |
| 06/19/1997 | WO1997022206A1 Marking a video and/or audio signal |
| 06/05/1997 | WO1997020298A1 Digital anti-counterfeiting software method and apparatus |
| 06/04/1997 | EP0573406B1 Program transmission optimisation |
| 05/28/1997 | CN1150849A Method of verifying integrity of data stored on processing facility used for processing sheet-like articles such as bank notes or bills |
| 05/13/1997 | US5629770 Document copying deterrent method using line and word shift techniques |
| 05/01/1997 | WO1997009817A3 Document processing |
| 04/23/1997 | EP0769770A2 Information transfer and use, particularly with respect to objects such as gambling chips |
| 04/16/1997 | EP0648162A4 Copy preventing device and method. |
| 04/02/1997 | EP0766468A2 Method and system for inserting a spread spectrum watermark into multimedia data |
| 04/01/1997 | US5616443 Toner for electrography |
| 03/13/1997 | WO1997009817A2 Document processing |
| 03/13/1997 | WO1997009178A1 Security protection double paper for facsimile reception |
| 03/12/1997 | EP0760987A1 Method of verifying the integrity of data stored on a processing facility used for processing sheet-like articles such as bank notes or bills |
| 02/25/1997 | CA1338942C Cryptographic device |
| 02/13/1997 | WO1997005594A1 Holographic method for encrypting and decrypting information using a fingerprint |
| 01/30/1997 | WO1997003398A1 Protection of software against use without permit |
| 01/29/1997 | CN1141450A Software reproduction apparatus |
| 01/21/1997 | US5596640 Digital image forming apparatus with data conversion |
| 01/16/1997 | WO1997001832A1 A method of reproducing information |
| 01/16/1997 | WO1997001605A1 Novel colorants and colorant modifiers |
| 01/16/1997 | CA2221565A1 Novel colorants and colorant modifiers |
| 01/03/1997 | WO1997000578A1 Method of marking binary-coded data sets |
| 12/12/1996 | WO1996039693A1 Digital information recording media and method of using same |
| 12/12/1996 | WO1996039302A2 Temporary marking, ultraviolet radiation detection, and printing, all using photoerasable colorants |
| 12/12/1996 | CA2219463A1 Temporary marking, ultraviolet radiation detection, and printing, all using photoerasable colorants |
| 12/12/1996 | CA2219459A1 Digital information recording media and method of using same |
| 12/10/1996 | US5583941 Imaging processor |
| 12/05/1996 | WO1996038946A1 Method of encoding sequences consisting of figure-coded data units |
| 12/03/1996 | US5581069 Louvered light collection arrangement in electro-optical reading systems |
| 12/03/1996 | US5581068 System for reading coded indica with increased depth of field |
| 11/26/1996 | US5579392 Duplicating and ciphering device and methods for codification of facsimile telecopies |
| 10/30/1996 | EP0739559A1 Method for key distribution using quantum cryptography |
| 10/23/1996 | CN1134005A Apparatus for mfg. display type holographic cipher by Moire technique |
| 10/16/1996 | EP0737387A1 Identification/authentication coding method and apparatus |
| 10/08/1996 | CA2000400C Public key/signature cryptosystem with enhanced digital signature certification |
| 09/26/1996 | WO1996029683A1 Method of verifying the integrity of data stored on a processing facility used for processing sheet-like articles such as bank notes or bills |
| 09/26/1996 | DE19510626A1 Verfahren zur Prüfung der Unversehrtheit von gespeicherten Daten auf einer Verarbeitungsanlage für Blattgut, wie z. B. Banknoten oder Wertpapiere Procedures for verifying the integrity of data stored on a processing facility for sheet material such. As bank notes or securities |
| 09/24/1996 | US5560008 Remote authentication and authorization in a distributed data processing system |
| 09/12/1996 | DE19602136A1 Document verification system with server subsystem |
| 09/06/1996 | WO1996027259A1 Method of and apparatus for manipulating digital data works |
| 08/20/1996 | US5548110 Optical error-detecting, error-correcting and other coding and processing, particularly for bar codes, and applications therefor such as counterfeit detection |
| 08/14/1996 | DE19520232C1 Sequence coding for ASCII text encryption |
| 07/25/1996 | WO1996022335A1 Novel colorants and colorant modifiers |
| 07/25/1996 | CA2209480A1 Novel colorants and colorant modifiers |
| 07/16/1996 | US5537476 Secure viewing of display units by image superposition and wavelength separation |
| 07/03/1996 | CN1032232C Hexagonal information encoding article process and apparatus |
| 07/02/1996 | US5532469 Hand held bar code reader with input and display device and processor |
| 06/27/1996 | WO1996019776A1 Photo-erasable data processing forms |
| 06/27/1996 | WO1996019502A1 Improved mutable composition |
| 06/27/1996 | CA2207571A1 Improved mutable composition |
| 06/26/1996 | EP0717897A1 System and method for quantum cryptography |
| 06/26/1996 | EP0717896A1 System and method for key distribution using quantum cryptography |
| 06/26/1996 | EP0717895A1 Key distribution in a multiple access network using quantum cryptography |
| 06/12/1996 | CN1124389A Anti-fake method by product cipher |
| 05/30/1996 | DE3730134C1 Encryptor operated by authorised card for coded digital transmission |
| 05/28/1996 | US5521367 Fiber optic barcode reader with piezoelectric element |
| 05/23/1996 | WO1996015621A1 Method for certifying a copy of a document such as a fax |
| 05/22/1996 | EP0712506A1 Mutable composition and methods of use thereof |
| 05/09/1996 | DE4439032A1 Transmission method for coded data for facsimile, copier etc. |
| 04/30/1996 | US5513264 Visually interactive encoding and decoding of dataforms |
| 03/20/1996 | EP0701728A1 Visually interactive encoding and decoding of dataforms |
| 03/14/1996 | WO1996007975A1 Reader using moving averages to break the (n,k) code barrier for upc, ean, and others |
| 02/21/1996 | EP0697682A1 Document securing apparatus and method; and graphical authentication code |
| 02/15/1996 | DE19529320A1 Device for reproducing software and image and sound data and calculating charges |
| 02/13/1996 | US5491646 Production of anaglyphs |
| 02/13/1996 | US5491563 Apparatus for scrambling and unscrambling documents |
| 02/07/1996 | CN1116346A Copy-proof electronic chaos fingerprint security method |
| 02/06/1996 | US5489158 Printer system for removable machine readable code |
| 01/18/1996 | DE4425158A1 Constructing encryption functions |
| 01/17/1996 | EP0394426B1 Method and apparatus for scrambling and unscrambling bar code symbols |
| 12/26/1995 | US5479515 One-dimensional bar code symbology and method of using same |
| 12/21/1995 | DE4420689A1 Process for coding personal identification and other secret numbers |
| 12/14/1995 | DE4420466A1 Template for encoding and decoding written material |
| 12/07/1995 | WO1995033250A1 Information display |
| 11/28/1995 | US5471533 Record with encoded data |
| 11/09/1995 | DE4416253A1 Data protection technique testing authenticity and integrity of coded information |
| 10/26/1995 | WO1995028695A1 Print reading device |
| 10/12/1995 | WO1995027275A1 Visually interactive encoding and decoding of dataforms |
| 09/27/1995 | CN1109192A Method of and system for enciphering image information |
| 09/08/1995 | CA2183958A1 Encryption template |
| 08/02/1995 | EP0611470A4 Optical image encryption and decryption processes. |
| 07/25/1995 | US5436974 Method of encoding confidentiality markings |
| 06/29/1995 | WO1995014289A3 Identification/authentication coding method and apparatus |
| 06/28/1995 | EP0660275A2 Document copying deterrent method |
| 06/07/1995 | EP0656723A1 Method of and system for enciphering image information |
| 06/06/1995 | US5422469 Fiber optic barcode readers using purely mechanical scanner oscillation |
| 06/06/1995 | US5421779 Composite recording materials, facsimile instruction labels and method of delivering hard copies of confidential messages using the same |
| 05/30/1995 | US5421031 Program transmission optimisation |
| 05/30/1995 | US5420922 System for the safe transmission of messages |