| Patents for G09C 3 - Typewriters for ciphering or deciphering cryptographic text (479) |
|---|
| 07/22/2004 | CA2516180A1 Multi-part form having detachable wristband, labels and cards or the like |
| 07/08/2004 | US20040130142 Event entry and advertising medium |
| 06/24/2004 | US20040118931 Authentication of items using transient optical state change materials |
| 06/17/2004 | US20040113421 Multi-part form having detachable wristband, labels and cards or the like |
| 06/15/2004 | US6751320 Method and system for preventing reproduction of professional photographs |
| 06/15/2004 | US6750902 Camera network communication device |
| 04/08/2004 | WO2004029914A1 Authentication of items using transient optical state change materials |
| 04/08/2004 | CA2497645A1 Authentication of items using transient optical state change materials |
| 02/19/2004 | US20040032972 Digital watermarks for unmanned vehicle navigation |
| 12/31/2003 | CN2596484Y Novel double layer cipher key board |
| 12/18/2003 | US20030232179 Light control material for displaying color information, and images |
| 12/17/2003 | CN1462020A Ciphor safety technology |
| 12/11/2003 | US20030226296 Calendar |
| 12/03/2003 | EP1366486A2 Display driver with energy recovery |
| 11/19/2003 | CN2587028Y Permanent calendar rotating disc |
| 10/09/2003 | WO2002017278A3 Display driver with energy recovery |
| 10/09/2003 | US20030189731 Print user interface system and its applications |
| 09/30/2003 | US6628802 Marking and determining distortion in an image |
| 09/25/2003 | US20030182575 Performing encryption-oriented action on document at host device prior to transmission to printer-related device over network |
| 09/25/2003 | US20030179364 Micro-optics for article identification |
| 09/04/2003 | US20030165240 Decryption system for encrypted display |
| 07/31/2003 | WO2003062900A1 Light control material for displaying color, information, and images |
| 07/31/2003 | WO2003061983A1 Micro-optics for article identification |
| 07/24/2003 | US20030140232 Method and apparatus for secure encryption of data |
| 03/12/2003 | EP0966839A4 In-camera image marking and authentication |
| 11/27/2002 | CN1095150C Value transfer system |
| 11/14/2002 | US20020169962 Digital watermarks used in automation equipment |
| 10/17/2002 | US20020150242 Method and apparatus for secure ultrafast communication |
| 09/19/2002 | US20020131593 Public encryption of a stored print job |
| 08/28/2002 | CN2508329Y Cipher keyboard |
| 08/20/2002 | US6438231 Emulsion film media employing steganography |
| 08/01/2002 | US20020101988 Decryption glasses |
| 07/17/2002 | EP1222512A2 Security module and method for production of forge-proof documents |
| 07/11/2002 | US20020089173 Permanent pipe identification tag system and method of using the same |
| 04/25/2002 | US20020048387 Method and system for preventing reproduction of professional photographs |
| 04/23/2002 | CA2225936C Value transfer system |
| 04/11/2002 | US20020041275 Matrix display driver with energy recovery |
| 04/02/2002 | US6366894 Value transfer system |
| 03/21/2002 | WO2001025879A3 Security module and method for production of forge-proof documents |
| 03/21/2002 | US20020034297 Wireless methods and devices employing steganography |
| 03/13/2002 | CN2482172Y Cipher input device protection cover |
| 02/28/2002 | WO2002017278A2 Display driver with energy recovery |
| 08/29/2001 | EP1128599A1 Method for the blind generation of a digital rsa signature and device for realising the same |
| 08/21/2001 | US6278781 Wireless telephony with steganography |
| 08/02/2001 | US20010010730 Steganographic messaging through imagery |
| 06/26/2001 | US6252963 Method and system for preventing reproduction of documents |
| 04/12/2001 | WO2001025879A2 Security module and method for production of forge-proof documents |
| 04/12/2001 | CA2425176A1 Security module and method for production of forge-proof documents |
| 01/23/2001 | US6178243 User-controlled document processing |
| 08/31/2000 | WO2000051283A1 A method of videotext information encryption and security transmission in a network |
| 08/29/2000 | US6111954 Steganographic methods and media for photography |
| 06/14/2000 | CN2383174Y Perpetual calendar for 21 century |
| 06/07/2000 | CN2382091Y Rotary cylinder calender |
| 05/24/2000 | CN2379858Y Plate wall calender able to be used for several years |
| 05/16/2000 | US6064737 Anti-piracy system for wireless telephony |
| 04/06/2000 | WO2000019658A1 Method for the blind generation of a digital rsa signature and device for realising the same |
| 03/01/2000 | CN2366920Y Permanent calendar |
| 12/29/1999 | EP0966839A1 In-camera image marking and authentication |
| 09/15/1999 | CN2338835Y Perpetural calendar |
| 07/21/1999 | CN2330033Y Combined desk calendar |
| 07/14/1999 | CN2329060Y Keyboard type mechanical cipher controller |
| 06/23/1999 | CN2325840Y Quick checking disc for miniature week universal calendar |
| 04/21/1999 | CN2315613Y 万年日历 Calendar years |
| 04/07/1999 | CN2313262Y Simple solar calendar perpetual-calendar |
| 03/31/1999 | EP0836731B1 Value transfer system |
| 03/31/1999 | CN2312497Y Universal calendar |
| 03/24/1999 | CN2311819Y Multi-function changable plughole type lamp box calendar |
| 01/19/1999 | US5862218 Method and apparatus for in-camera image marking and authentication |
| 10/13/1998 | US5822436 Photographic products and methods employing embedded information |
| 09/23/1998 | CN1194050A Value transfer system |
| 04/22/1998 | EP0836731A1 Value transfer system |
| 10/16/1997 | WO1997038531A1 In-camera image marking and authentication |
| 05/01/1997 | WO1997009817A3 Document processing |
| 03/13/1997 | WO1997009817A2 Document processing |
| 01/23/1997 | WO1997002548A1 Value transfer system |
| 12/21/1994 | EP0629972A2 Method and apparatus for embedding identification codes in printed documents |
| 01/29/1980 | US4185928 Printer for electric coding machines |
| 05/22/1979 | US4155659 Printing and coding machine |
| 02/22/1977 | US4008793 Typewriting machine |