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Class Information
Number: 283/73
Name: Printed matter > Having revealable concealed information, fraud preventer or detector, use preventer or detector, or identifier > Cryptogram (e.g., verification, tabular index)
Description: Subject matter wherein the printed matter is provided with obstructed or hidden information readable or understandable only by the use of a code associated with the obstructed or hidden information.

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8585094 Deterring information copying including deterrence of currency counterfeiting Nov. 19, 2013
8562026 Security element and process for the production of a security element Oct. 22, 2013
8562025 Secure data protection optically variable labels and foils Oct. 22, 2013
8532433 Image marker attaching apparatus and method Sep. 10, 2013
8526063 Image forming apparatus, method, and system for encrypting or decrypting portion of image Sep. 3, 2013
8478080 Securing of documents by means of digital watermark information Jul. 2, 2013
8437578 Digital anti-counterfeiting software method and apparatus May. 7, 2013
8289579 Variable guilloche and method Oct. 16, 2012
8282015 Document with linked viewer file for correlated printing Oct. 9, 2012
8274698 Image forming apparatus and image forming method Sep. 25, 2012
8208157 System and apparatus for authorizing access to a network and a method of using the same Jun. 26, 2012
8199913 Object authentication using embossed hidden images Jun. 12, 2012
8170208 Image decrypting apparatus, image encrypting apparatus, and image decrypting method May. 1, 2012
8090952 Counterfeit prevention system based on random positioning on a pattern Jan. 3, 2012
8031377 Encrypting image data based on paper fiber properties, printing encrypted image, and decrypting encrypted image Oct. 4, 2011
7987494 Method and apparatus providing end to end protection for a document Jul. 26, 2011
7931304 Coin-discriminator voucher anti-counterfeiting method and apparatus Apr. 26, 2011
7916343 Method of encoding a latent image and article produced Mar. 29, 2011
7913087 Optimization methods for the insertion, protection, and detection of digital watermarks in digital data Mar. 22, 2011
7878549 Printed substrate having embedded covert information Feb. 1, 2011
7845570 Value document Dec. 7, 2010
7817299 Image forming apparatus Oct. 19, 2010
7796753 Digital anti-counterfeiting software method and apparatus Sep. 14, 2010
7744130 Secure product authentication tags Jun. 29, 2010
7740281 Method and system for producing certified documents and the like Jun. 22, 2010
7533062 Method for creating self-authenticating documents May. 12, 2009
7488002 Security and/or value document Feb. 10, 2009
7374484 Lottery ticket security method May. 20, 2008
7362860 Image data encryption method, image data transform method, apparatus for the methods, computer program, and computer-readable storage medium Apr. 22, 2008
7328995 Method and apparatus for embedding information in an image Feb. 12, 2008
7193744 Image forming system and its control method Mar. 20, 2007
7144166 System for secure printing Dec. 5, 2006
7089420 Authentication method and system Aug. 8, 2006
7079667 Method and apparatus for implementing occlusion glyph code tilings Jul. 18, 2006
7074478 Optical encoding Jul. 11, 2006
7040664 Self-verifying security documents May. 9, 2006
6859534 Digital anti-counterfeiting software method and apparatus Feb. 22, 2005
6817689 Currency bill having etched bill specific metallization Nov. 16, 2004
6792110 Apparatus and method for enhancing the security of negotiable instruments Sep. 14, 2004
6761377 Self-verifying security documents Jul. 13, 2004
6735575 Verifying the authenticity of printed documents May. 11, 2004
6692030 Security document with nano-pattern Feb. 17, 2004
6666991 Fluorescent or phosphorescent composition Dec. 23, 2003
6652944 Peelable label assembly and method of manufacturing same Nov. 25, 2003
6646764 Printing system to output a document combining image data with data that identifies a source of the image and a printer Nov. 11, 2003
6636614 Method for preventing the falsification of documents comprising a photograph, preferably a facial-view photograph Oct. 21, 2003
6565002 Method and system for identifying one or more objects May. 20, 2003
6549624 Apparatus and method for enhancing the security of negotiable documents Apr. 15, 2003
6505179 Verifying the authenticity of printed documents on universally available paper stock Jan. 7, 2003
6467810 Self-verifying security documents Oct. 22, 2002

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