William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 7384890 | Check fraud protection techniques A security feature and method for verifying the authenticity of commercial paper. In one embodiment, pearlescent ink is added to a portion of commercial paper stock. A recipient can then tilt the commercial paper stock to view the pearlescent ink mark, design, or sp... | 06/10/2008 |
| 7350820 | Integral special service mailing assembly and a method for using same An assembly for mailing an article requiring special services and a method for mailing same are provided. The assembly includes a return postcard, two anchor portions disposed on either side of the postcard, printer track strips having a plurality of holes for engag... | 04/01/2008 |
| 7303134 | Lottery game tickets and methods for making same In one embodiment there is described a reader capable of processing image data representing a substrate. The reader can include a multiple pixel image sensor and a lens focusing image onto the multiple pixel image sensor. In one embodiment the image data representin... | 12/04/2007 |
| 7290803 | Reflective article and method of manufacturing same A reflective printed article includes a substrate having a top surface and a bottom surface with a graphic image printed thereon. A reflective or glossy ink layer is printed over the entire top surface of the substrate. A graphic image is printed over the reflective... | 11/06/2007 |
| 7220524 | System and method for producing secure toner-based images A system and a method for printing a secure document that is difficult to forge and readily easy to visually verify are disclosed. The system includes a colorant for printing an image on a surface of a document, a dye for forming a latent version of the image undern... | 05/22/2007 |
| 7220535 | Marking and authenticating articles Disclosed herein are methods and apparatus for providing markings upon objects, including the read side of an optical information media, where the markings do not substantially interfere with object, including the use of the optical information media. This invention... | 05/22/2007 |
| 7220525 | Secure imaging toner and methods of forming and using the same A toner for printing documents that are difficult to chemically or physically forge and that are readily easy to visually verify and methods of using and forming the toner are disclosed. The toner includes a colorant for printing an image on a surface of a document ... | 05/22/2007 |
| 7163909 | Authenticity indicator A rapidly reversing authenticity indicator for substrates such as secure documents, tags and labels is described. The authenticity indicator comprises a substrate having provided thereon a coating of a colorless chromogenic material, a binder material and optional p... | 01/16/2007 |
| 7153206 | Lottery tickets with variable and static prizes where the variable redemption values change under certain predetermined events In an instant lottery ticket game structure having a lottery administration host computer that includes a ticket validation file containing prize codes for at least some of the lottery tickets, provision for instant lottery tickets having variable redemption values ... | 12/26/2006 |
| 7147801 | Ink jet ink composition and method for security marking Disclosed is an ink composition suitable for ink jet printing comprising a luminescent compound, a solvent, and an energy active compound, and optionally a non-luminescent colorant. The energy active compound, when exposed to energy, generates one or more active spe... | 12/12/2006 |
| 7111933 | Ink-jet systems and methods using visible and invisible ink Ink-jet printing systems and methods of use for printing visible and invisible inks for subsequent development, which can produce text with associated highlighting or underlining that reduces messiness inherent in highlighting important text are disclosed. The ink-j... | 09/26/2006 |
| 7070054 | Product packaging having a remanent value A packaging material is provided in a continuous roll for forming into a channel shaped receptacle for receiving and supporting a structure such as a food product to be packaged by an over-wrap material. The packaging material is formed from two substrate sheets con... | 07/04/2006 |
| 7048307 | Reflective display A display includes a base having a front surface, an adhesive pattern formed over a first area of the front surface, a reflective layer over the adhesive pattern, and may include an image formed over a second area of the front surface which is at least partially not... | 05/23/2006 |
| 7017293 | Wristband/cinch with label assembly business form and method A business form particularly adapted for use in a medical or hospital environment includes in a first embodiment a wristband assembly that is readily separable from a carrier comprised of a layer of face stock and a laminate, with the wristband including a printable... | 03/28/2006 |
| 6979487 | Glossy printed article and method of manufacturing same An improved printed article and a method of making same. The article including a substrate having a top surface and a bottom surface, with a reflective layer printed on the top surface of the substrate, a graphic design layer printed on the reflective layer, a textu... | 12/27/2005 |
| 6974249 | Thermal history sensor An improved thermal history sensor having multiple glass ceramic substrates with unique compositions is disclosed. By positioning the sensor adjacent to a component subject to thermal stressors, each of the glass ceramic substrates react with a different rate of nuc... | 12/13/2005 |
| 6962371 | Integral variably printed special service mailing assembly and a method for using same An assembly for mailing an article requiring delivery by a special service and a method for mailing same are provided. The assembly includes a return postcard and anchor portions removably attached to the return postcard. The anchor portions include adhesive that al... | 11/08/2005 |
| 6939826 | Product authentication Product package, comprising a data storage device, packaging material, and an authentication system. The authentication system comprises first and second coatings coated on the storage device and the packaging material. One of the coatings comprises chromogenic micr... | 09/06/2005 |
| 6939627 | Scratch layer transfer sheet and method of producing scratch printing product A scratch layer transfer sheet comprising a substrate film and a transferable scratch layer disposed on one surface of the substrate film, the transferable scratch layer comprising a hiding layer, being able to be thermally transferred to the print surface of a tran... | 09/06/2005 |
| 6916047 | Secure card A laminated construction that combines card stock with another card stock that has been printed with a dark pigmented coating, such as ink, to prevent the show through of information that appears beneath a scratch-off coating over the concealed information. ... | 07/12/2005 |
| 6916116 | Time or time-temperature indicating articles Time or time-temperature indicating articles are described comprising a housing enclosing: (a) a first fluid reservoir at least partially filled with a first fluid; (b) a substrate comprising a plurality of channels; (c) a second fluid reservoir in fluid communicati... | 07/12/2005 |
| 6896296 | Irreversible metal film display Display information is revealed from behind a metal film that can be cleared upon effective contact with a clearing agent. The metal film, while opaque, is generally less than 1000 Angstroms thick and can be cleared by exposure to innocuous agents including food or ... | 05/24/2005 |
| 6827967 | Treatment process which makes possible the chemical destruction of securities or paper documents The present invention relates to a chemical treatment process which makes it possible to modify the chemical structure of securities, bank notes or paper documents during their transportation or their storage, either in a vehicle or by a man on foot, thus making it ... | 12/07/2004 |
| 6607813 | Simulated security thread by cellulose transparentization A security document is provided comprising a finished cellulosic substrate having at least one transparentized portion formed therein. The transparentized portion comprises a transparentizing composition that is applied so as to define an area of increase... | 08/19/2003 |
| 6596354 | Plastics film, use of dyestuffs therein and process for testing the authenticity of packaged goods A dyestuff capable of undergoing a clearly visible colour change when contacted with a color-developing material is dispersed in the body of a plastics film and used in the identification of goods. The film can be used for packaging of the goods or as a l... | 07/22/2003 |
| 6578875 | Product label A product label in which a heat sensitive recording layer and a heat sensitive color forming layer for printing goods information are laminated on a substrate, the heat sensitive recording layer and the heat sensitive color forming layer form colors diffe... | 06/17/2003 |
| 6562252 | Method for reproducing images or text on a metalized holographic 2D, 3D bright colored film The invention relates to a method for reproducing images or text on a metalized holographic film, comprising a coupling step, in which a bottom metalized holographic film is laminated to a second film, thereon an adhesive mass has been preliminarily depos... | 05/13/2003 |
| 6543808 | Direct thermal printable pull tabs An improved construction for pull-tab game pieces involves the use or two or more substrates, one of which is at least partially transparent. A thermosensitive imaging layer within which game results are direct thermally printed is located between the tra... | 04/08/2003 |
| 6406062 | Hidden image game piece A hidden image game piece and a method by which a hidden image game piece is produced and used. A first hidden image game piece is formed on a transparent or translucent substrate. A second hidden image game piece is formed electronically, and optionally ... | 06/18/2002 |
| 6328342 | Tape data carrier, method and device for manufacturing the same A tape data carrier for protecting articles and documents from counterfeiting and copying is formed by a polymer structure including at least one polymer layer of which at least one layer has at least one of through-perforations and pits. These through-pe... | 12/11/2001 |
| 6318760 | Irreversible display with temporary imaging stage A metal layer cleared by contact with a chemical clearing agent to reveal an underlying graphics layer is at least partially covered by a buffer material that delays contact with the clearing agent. The buffer material can be applied in a pattern that for... | 11/20/2001 |
| 6270122 | Irreversible thin film display with clearing agent Display information is revealed from behind a metal film that can be cleared upon effective contact with a clearing agent. The metal film, while opaque, is generally less than 1000 Angstroms thick and can be cleared by exposure to innocuous agents includi... | 08/07/2001 |
| 6261809 | Method for marking solid, liquid or gaseous substances The invention relates to a method for marking solid, liquid or gaseous substances, whereby the substance to be marked is provided with at least one synthetically produced nucleic acid sequence. Said nucleic acid sequence contains a first sequence section ... | 07/17/2001 |
| 6224111 | Secure document Unauthorized alteration of a document can be avoided in a secure document that includes a substrate (10) defining the body of the document. Indicia (24, 26, 30, 32, 36 and 40) located on the substrate (10) designate an area (42) to receive variable inform... | 05/01/2001 |
| 6142533 | Lottery ticket with hidden conductive ink security means The present invention is directed to a scratch-off type lottery ticket in which a layer comprised of a non-conductive ink region and a conductive ink region are printed below an opaque scratch-off layer. The conductive ink region is detectable through the... | 11/07/2000 |
| 6106021 | Security papers with unique relief pattern A counterfeit-resistant document comprises a validation mark with relief markings according to a unique pattern that identifies the source of the document. The source of the document can be identified by detecting the unique pattern on the validation mark... | 08/22/2000 |
| 6095568 | Device for sealing pressure compensation openings The invention relates to a device for sealing pressure compensation openings in components in particular of a motor vehicle control unit. Previously, pressure compensation openings were sealed in the interior of the housing by a watertight and gas-permeab... | 08/01/2000 |
| 6089610 | Security document A security system for a document utilizing a plurality of fluorescent snippets on the document with other encryption data printed thereon with visible and invisible ink that becomes bright when subjected to certain light. The system combines visible and i... | 07/18/2000 |
| 6073968 | Security features for a decal A business document contains a removable decal. The decal has a plastic substrate overlaid with a reflective coating including an aluminum coating and glass beads. A toner receptor coating overlies the reflective coating. A fine screen pattern is printed ... | 06/13/2000 |
| 6039357 | Security bands to prevent counterfeiting with color copies A protected/security document is provided that foils counterfeiting even if a laser photocopy machine (such as a Canon 500 color copier) is utilized. The document has at least three discrete half-tone printed bands disposed on its surface, provided by dot... | 03/21/2000 |