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| Number | Title | Issue Date |
| 7654581 | Security document with ultraviolet authentication security feature The invention relates to the field of printed security documents and, more particularly, to security documents and methods of making security documents bearing enhanced security features. The security documents may include identification documents or any other known... | 02/02/2010 |
| 7401817 | Invisible, machine-detectable security marking, production of the security marking, and security system comprising this security marking The invention relates to a security marking whose level of proof against forgery is greater than that of known security markings, comprising liquid-crystalline material with chiral phase, wherein the security marking is imperceptible to the eye and the properties of... | 07/22/2008 |
| 7074478 | Optical encoding A substrate, such as a document of value, carries a design feature (F), which includes an array of repeating patterns with the patterns exhibiting discrete differences in one or more visual characteristics, for example, shape, color or optical responses, according t... | 07/11/2006 |
| 7013619 | Property and evidence preservation system A method of preserving evidence and later returning the same utilizing a package having an optically transparent film incorporating the evidence and a signed itemization thereof to produce a tamper evident package. ... | 03/21/2006 |
| 6929413 | Printer driver log security verification for identification cards The present invention provides a counterfeit resistant ID card where a printed security feature is applied to the ID card at the issuance location at the time the card is issued. Specifically, the present invention provides for a process of producing an ID card havi... | 08/16/2005 |
| 6918482 | Device and method for verifying the authenticity of banknotes An apparatus and method for testing the authenticity of bank notes are proposed. The apparatus includes a light source for emitting light suitable for exciting fluorescent light in a bank note to be checked, and a fluorescence detector for detecting the fluor... | 07/19/2005 |
| 6902198 | Scratch tape A scratch tape includes a base substrate, a UV coating layer formed on the upper surface of the base substrate, a lightproof layer 30 formed of the UV coating layer for shielding light, and a water-based coating layer 40 such that the enhanced lightpro... | 06/07/2005 |
| 6805926 | Security label having security element and method of making same A security label having one or more security elements is used on or in association with items, such as consumer products, that have value and are susceptible to counterfeiting. The security label is preferably used as a primary label directly affixed to the item or ... | 10/19/2004 |
| 6764970 | Woven labels with an invisible bar code According to the invention the labels (22) are produced in a broad woven fabric (21) comprising ground warp yarn (4) and ground weft yarn (5) for a ground woven fabric (11), embroidery weft yarn (12) which forms a figure and... | 07/20/2004 |
| 6337752 | Data carrier having an optically variable element and methods for producing it The invention relates to a system comprising a series of data carriers, in particular identity cards, papers of value or the like, whereby the data carriers belonging to the system exhibit diffraction structures containing standard information and parts o... | 01/08/2002 |
| 6203069 | Label having an invisible bar code applied thereon A product authentication system and method employs a unique mark that is simple and cost-effective to apply and read, but provides several layers of protection, including anti-counterfeit and anti-diversion, against counterfeiters. The unique mark include... | 03/20/2001 |
| 6127050 | Archival imaging medium and method therefor An archival medium, such as a compact disc, is made of a metal such as aluminum which is mechanically gained with particulate material under conditions that embed particulate material into the surface of the medium and visibly imageable by selective expos... | 10/03/2000 |
| 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 |
| 6086966 | Method for authenticating a textile product and a thread and a woven label usable therewith A method for authenticating a textile product, wherein a colorless composition is applied to at least one portion of at least one thread of the textile product. The composition comprises one of a pair of a colorformer and an activator which react when mix... | 07/11/2000 |
| 6076859 | Method and label system for marking property A method especially useful for marking property having a multitude of individually-valuable metal components involves adhering at least one specially-constructed label to at least one painted metal surface of the property to be marked. Each label includes... | 06/20/2000 |
| 6054021 | Process of manufacturing authenticatable paper products An authenticatable paper product is prepared by adding to a papermaking furnish fibers treated with from about 50-200 lb/ton of a fluorescent whitening agent (FWA). The paper made from the papermaking furnish will include fluorescent cellulosic fibers in ... | 04/25/2000 |
| 6042150 | Playing cards security system A playing cards security system for detecting when additional playing cards are added to a deck of playing cards. The system includes a deck of playing cards where each playing card of the deck of playing cards has predetermined indicia provided thereon. ... | 03/28/2000 |
| 5992891 | Tamper resistant identification card A base layer of an information storage card is coated with a first coating layer that will glow a first color under longwave ultraviolet light. A second coating is applied onto the first coating. This second coating will glow a second color under ultravio... | 11/30/1999 |
| 5862247 | Personal and property identification system System for identification of a person (P, P') or an object with an informon carrier (1; G, 20), including at least one identification (IA, IB, IC; K) not perceptible with a human sense organ characteristic for a certain person (P, P') or an object (G), a... | 01/19/1999 |
| 5574790 | Fluorescence authentication reader with coaxial optics A multiple-reader system for authentication of articles uses a first reader (400) which employs predetermined modulated illuminating light (20) and a multiplicity of discriminating variables, such as wavelengths (110), amplitudes (120), and time delays (1... | 11/12/1996 |
| 5418855 | Authentication system and method A system for authentication of articles uses a multiplicity of discriminating variables to characterize light detected from the articles after predetermined illumination. Articles are tested which have been marked with substances such as dye or ink that f... | 05/23/1995 |
| 5401960 | Process for marking an article Process for marking an article by means of a pattern, which contains geometrically encoded information and can be evaluated with optical means by irradiation with light, there being provided on the surface of the article in a spatial arrangement in relati... | 03/28/1995 |
| 5372387 | Security device for document protection The document or substrate containing the information to be protected is covered with a liquid crystal or other such material capable of being made transparent using a process such as heating it to a higher temperature than ambient room temperature. In thi... | 12/13/1994 |
| 5360235 | Secret optical marking An optical marking system in which objects are coated with materials for purposes of applying secretly coded marks on the objects. The coating materials are transparent in daylight and have the property of absorbing ultraviolet light. When such material... | 11/01/1994 |
| 5284364 | Increased-security identification card system The invention is a document security system characterized by a data substrate having photographic or printed information on a base print, and also having a personalized polarization-altering overlay sealed to the base print and encoded with additional cod... | 02/08/1994 |
| 5271645 | Pigment/fluorescence threshold mixing method for printing photocopy-proof document Commercially available pigments mixed with fluorescence compound to obtain print stuff mixtures for transfer thereafter to mattes. The print stuff mixtures obtainable thereby are used to print securitY and face-value documents which will be color copier r... | 12/21/1993 |
| 5259907 | Method of making coded playing cards having machine-readable coding An apparently conventional playing card is invisibly coded so that it can only be read face down, by an electrooptic reading means. The card may be of non-laminated conventional card stock which has a substantially white surface conventionally printed wit... | 11/09/1993 |
| 5169155 | Coded playing cards and other standardized documents An apparently conventional playing card is invisibly coded so that it can only be read face down, by an electro-optic reading means. The card may be of non-laminated conventional card stock which has a substantially white surface conventionally printed wi... | 12/08/1992 |
| 5004327 | Light-polarizing material in the form of sheets or of a web and a method for the manufacture of the material A light-polarizing element for use in a security document to permit authentication of the security document includes an intermediate layer of water-absorbing polymer material laminated between two outer layers of transparent material. The intermediate lay... | 04/02/1991 |
| 4957312 | Sales records Sales records comprising alphanumeric characters that are resistant to counterfeiting can be made by printing different parts of at least some of the characters making up the record in a plurality of colors.... | 09/18/1990 |
| 4921280 | Security fibers and other materials made luminescent by a dyeing process, processes for their manufacture and their applications The invention relates to security fibers and other allied materials made luminescent by a dyeing process employing rare-earth compounds and their applications in fiduciary documents and other materials requiring authentication.... | 05/01/1990 |
| 4891011 | System for assisting the learning of a subject A system for assisting the learning of a subject and, more specifically, for the aiding of the teaching of a language. The system comprises a substrate upon which is arranged a first, basic text that contains supplementable information which is unaidedly ... | 01/02/1990 |
| 4884828 | Security documents A security document has security printing formed as a moire pattern of two superimposed sets of generally parallel lines. In each line set the line spacing varies progressively along the length of the lines so that each line set has one or more areas in w... | 12/05/1989 |
| 4881217 | Method of making optically recorded information medium by exposure to ultraviolet light The present invention relates to a method of making an optically recorded information medium which permits the reduction of the number of the processing steps and the reproduction of the recorded medium at a reasonable cost and in large quantities. The me... | 11/14/1989 |
| 4874188 | Fiduciary or security object enabling visual or optical authentification The present invention relates to the authentication of fiduciary or security objects, such as official documents, contracts, banknotes, credit cards and computer diskettes. The object to be authenticated is marked with a matrix composed of an organic resi... | 10/17/1989 |
| 4865549 | Medical documentation and assessment apparatus A documentation system that allows adequate control of documentation in addition to an assessment of skills of the professionals involved includes a plurality of sections, each section dedicated to a particular body system. Each of the sections has dispos... | 09/12/1989 |
| 4863783 | Security paper Paper embodying for purposes of identification one or more pigments, inconspicuous in daylight but visible on inspection in darkened surroundings or after illumination at predetermined wavelength from an artificial source, wherein the pigment is in the fo... | 09/05/1989 |
| 4476381 | Patient treatment method A patient treatment method and system facilitates automated administration of the treatment of a patient, including establishing a direct linkage, at all stages of treatment, between the patient, on the one hand, and tests performed on the patient, specim... | 10/09/1984 |
| 4442170 | Security document with security features in the form of luminescing substances Security paper with narrow band luminescing authenticity characteristics which can only be excited in substantially the same wavelength region in which it also emits. With these authenticity characteristics therefore the authenticity signal is overlapped ... | 04/10/1984 |
| 4352706 | Process for applying a metallic image in register to a document of value A valuable document is protected from counterfeiting by applying an extremely thin layer of metal to the document at predetermined locations. The thin layers of metal form a "ghost image" which changes in appearance as the angle of view is varied, making ... | 10/05/1982 |
