Matches 1 - 48 out of 48
Match Document Document Title
7611168 Security document and security element for a security document  
Security element 2, 4 to be embedded in or applied to a security document so that it is visually recognizable from both sides of security document 1 is of multilayer construction and includes...
7255909 Security laminate  
In one aspect, the invention provides a security laminate comprising a retroreflective layer comprising a plurality of retroreflective microbeads partially embedded in and protruding from a...
7172803 Laser markable carrier unit  
The present invention relates to the laser inscription of a flexible inner support layer of a multilayered support unit, which is distinguished by the fact that the laser inscription of the inner...
7129506 Optically detectable security feature  
An optically detectable security marker for emitting light at a pre-selected wavelength. The marker comprises a rare earth dopant and a carrier incorporating the rare earth dopant. The interaction...
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...
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...
RE38321 Transparent hologram seal  
A hologram forming layer, transparent evaporated layer, colored layer, adhesion anchor layer, and adhesive layer are sequentially laminated on the under surface of a base member. The laminated body...
6307664 Thermochromic game piece  
A thermochromic game or prize or message indicator includes a typical thermochromic or thermally sensitive battery testers coupled to a first conductive substrate with a second thermally responsive...
6176521 Variable color print with locally colored regions and method of making same  
A variable color print of an image includes a reflective image medium including a plurality of different, locally colored, image regions; a first plurality of repeated changes in reflective angle...
6089611 Card with identifying feature and removable element  
A transactional control system, a promotional system, and a redemption system including a set of a card and a removable and reusable label. The removable and reusable label having a first side...
6089614 Security device  
6066437 Film which can be lettered using a laser beam  
This invention relates to film which is lettered with a laser beam comprising at least one protective film which is transparent to the laser beam, at least one opaque layer which is ablated by the...
6024455 Reflective article with concealed retroreflective pattern  
A reflective article has a multilayer film covering a patterned retroreflective layer. In one embodiment the patterned retroreflective layer includes a separate indicia layer covering a...
5856048 Information-recorded media and methods for reading the information  
The invention is directed to an information-recorded medium with easily selectable and identifiable items of information, which is virtually protected against forgery and has enhanced security...
5760961 Optical information carrier having diffractive features and diffraction modulation layers  
An information carrier is in the form of a composite laminate with a first, a second and a third layer having refractive indices n3, n4, n5 respectively. The second layer forms structures by only...
5403039 Tamper-resistant article and method of authenticating the same  
A printed document, such as a lottery ticket, includes a thermochromic layer at least over the imprinted data region. The printed document can be authenticated by applying heat to the thermochromic...
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...
5344191 Hidden entry system and use thereof  
A hidden entry system comprises a document having a localized coating of a non-pressure sensitive heat activated autogenous chromogenic composition to provide a latent image which reveals hidden...
5295695 Method of coding gifts  
A method of coding gifts including a set of stickers all with one symbol which are attached to gifts with a card given to the child identifying the symbol and indicating that all gifts with that...
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...
5161829 Security paper and method of manufacturing the same  
A security paper includes at least two layers of paper each having inner and outer surfaces and predetermined mechanical properties, color and optical density. Authentication indicia is printed on...
5104471 Interlaminar sandwich with diffraction structure  
An interlaminar sandwich comprises first and second lacquer layers, a diffraction structure embedded between the first and second lacquer layers, a heat activated adhesive layer disposed one one of...
5076613 Label or package construction incorporating hidden indicia game  
Label or package construction incorporating a hidden, but purchaser-accessible, game piece. The label, on the part of the package incorporating the gamepiece, is comprised of multiple plastic...
5074597 Computerized method of generating film masters for embossing and printing color images  
A computerized technique for generating masters for embossing and printing color images with local regions of variation of an optical characteristic such as reflectance is disclosed. The color...
5060981 Transparent overlay for protecting a document from tampering  
A transparent overlay that can protect a document from tampering has a transparent cover sheet, a layer of hot-melt adhesive over one surface of the transparent cover sheet, and a polymeric...
4941686 Identity card  
An optically-readable identity card has an inner core layer of material which inhibits light from the optical reader from passing through the body of the card. The inner core material is a plastic...
4921278 Identification system using computer generated moire  
A computer generated moire identification system mainly uses two kinds of computer generated grids, one called object grids, and the other, reference grids. An object grid is used as an information...
4824144 Color identification system  
This relates to an identification system for authenticating labels and cards. Each label or card would be provided with authenticating characters which are printed in color and which are at least...
4786084 Volumetric holographic photocopy prevention film  
The present invention is directed to a photocopy prevention film applied to a document to be protected that comprises either a volume holographic refraction grating or a surface holographic...
4708920 Microlens sheet containing directional half-tone images and method for making the same  
A sheet containing an integrated-directional, half-tone image. Each sheet may contain one or more such images. Also a method for forming such images in microlens sheetings comprising directly a...
4685768 Color control in holograms  
Color control in a Denisyuk type hologram having interference fringes lying generally parallel to the substrate is effected by subjecting the initially produced hologram to resensitizing,...
4682794 Secure identification card and system  
A credit card is made with a number of optical fibers sandwiched in the card. Some of the fibers intersect opposite edges of the card in a random fashion and provide a unique code characteristic of...
4659112 Identification system comprising a partially reflective retardation device  
There is disclosed a tamper-free identification system, such as an ID card, comprising an information-bearing substrate made of a flexible but substantially rigid material, a partial light...
4598205 Security paper with authenticity features in the form of substances luminescing only in the invisible region of the optical spectrum and process for testing the same  
Security paper with luminescing authenticity characteristics which after excitation with invisible light emit exclusively invisible light of different wavelengths as authenticity signal. The...
4578298 Composite films for protecting documents from being reproduced  
A composite film for protecting documents from being reproduced comprising a colored transparent film and a transparent adhesive layer applied to the back of the transparent film.
4552617 Security features in paper  
Security features for authentification of currency paper are incorporated within the paper during the paper making process. Various codes are incorporated within the paper for viewing by means of...
4547002 Credit and identification cards having pieces of diffraction grating therein  
An information bearing credit or identification card in which pieces of a diffraction grating, preferably an embossed hologram, are randomly distributed in a plastic or paper card so that light...
4507349 Security medium and secure articles and methods of making same  
A security medium, secure articles made therefrom and methods of making same. Articles are disclosed which are resistant to counterfeiting and unauthorized alteration and which are suitable for use...
4504083 Guilloche identification card  
An identification card having photographically recorded individualizing data is provided. The photographically recorded data are interspersed with a security pattern in transparent ink. This...
4469725 Identification card  
A monolithic laminate identification card which contains at least two layers (26, 27) with different optical permeability or color. The adjoining joinable surfaces of these layers are provided with...
4457539 Composite label web, price tag and re-price label combination, and method of price and re-price marking  
There is disclosed a composite label web having pressure sensitive labels especially adapted for re-pricing. The composite label web is of a type in which pressure sensitive adhesive is on the...
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...
4304809 Identity card with grid images  
Disclosed is an identity card having grid images thereon comprised of a linear grid structure. In various embodiments, the grid depths of the individual grid images differ and can produce several...
4250393 Photoelectric apparatus for detecting altered markings  
An optical reading apparatus is described for reading documents which contain information in the form of optical markings which deflect a reading beam coming from a light source in at least one...
4189353 Method and device for transmitting confidential information through the mail  
A device and method for transmitting selected confidential information from an institution to a plurality of parties using post cards that have a preprinted camouflage pattern printed in a first...
3827726 IDENTIFICATION CARDS  
Identification cards including I. D. credit cards comprising a sheet material bearing a photographic image pattern preferably prepared by diffusion transfer processes. A portion of the photographic...
3802101 CODED IDENTIFICATION CARD  
A coded identification card which includes a core sheet and an outer adherent covering for the core sheet. The core sheet has a given transmissivity to radiant energy of a given frequency and...
3081088 Game apparatus  
Matches 1 - 48 out of 48