Matches 1 - 50 out of 184 1 2 3 4 >
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7431798 Security paper  
Security paper adapted to resist fraudulent alteration of toner-printed information thereon and to make such alteration or attempts at alteration evident has a maximum Scott-Bond strength of 150 J...
7429308 Method of manufacturing an article comprising at least one electronic chip  
The present invention provides a method of manufacturing an article comprising a fiber layer and at least one electronic chip, the fiber layer being formed by depositing fibers on a surface...
7399513 Paper including watermarks and/or embossing  
The invention relates to improvements in paper, and in particular to the use of watermarks and/or embossings for strengthening paper sheets and documents made therefrom. The invention therefore...
7384507 Watermarked paper  
Watermarked paper, preferably shadow-watermarked paper is produced in conventional manner and then size-press dyed using a pigment dyestuff composition. This results in unusual and attractive...
7367592 Marking substance and security markings for testing the authenticity of documents  
The invention relates to a marking substance for security documents of the kind difficult to discern by counterfeiters. The preferred marking substance is polyethylene dioxythiophene polystyrene...
7347917 Paper incorporating a wide elongate impermeable element, and a method of making of the same  
Paper incorporating a wide elongate impermeable element with regions at least partially exposed at one surface of the paper at two sets of windows at spaced locations has its windows formed by two...
7264691 Fibrous substrates  
A fibrous security substrate for use in producing documents includes at least one aperture extending therethrough and contains an elongate impermeable element at least partially embedded therein...
7175739 Method for incorporating feature substances into a paper web  
A method and apparatus for incorporating feature substances into a still moist but already sufficiently consolidated paper web provides for directing a feature substance suspension onto the surface...
6974623 Antifalsification paper provided with applied coding consisting of luminescent mottled fibers  
The invention relates to a security paper with at least two types of mottled fibers, which differ in terms of their luminescent characteristics and form a code. In each case one type of mottled...
6911115 Security paper  
Security paper ( 1 ) has a security zone ( 2 ) for providing protection against mechanical falsification. The security zone comprises a set of cells ( 3 ) indented in the paper and optionally...
6902331 Method and apparatus for secure printing  
The present disclosure relates to a method for printing a secure image on media using an inkjet printing device. The method includes printing an underlayer using an inkjet printing device that...
6824647 Method for marking a sheet of paper and sheet with a watermark  
A method for marking a watermark-type pattern onto at least part of an absorbent paper sheet is described. The method involves stress-deforming the sheet by making it pass between at least one...
6733627 Method for manufacturing paper having variable characteristics  
A method for manufacturing paper having a variable characteristic in a crossmachine direction including the steps of feeding a slurry to a distributor and delivering the slurry from the distributor...
6665406 Variable density verification  
A counterfeit-resistant document comprises a contrasting layer and a dynamic camouflaging layer. The contrasting layer is highly contrastive and includes a latent message that can be reproduced...
6663960 Fluorescent particles, method for preparing the same and paper preventing forgery using the fluorescent particle  
Fluorescent particles strongly fluorescing upon irradiation with ultraviolet rays, as well as a process for producing the same, are provided. A water-insoluble fluorescent dyestuff and/or pigment...
6630055 Coated paper including a pseudo-watermark, and a method of manufacture  
The present invention relates to a method of manufacturing a coated paper having at least one mark resembling a watermark, the method being characterized in that said mark is made after the drying...
6616803 Making paper  
This invention is directed to improvements in paper incorporating an elongate impermeable element, to a method of making such paper and to documents made therefrom. The invention therefore...
6592716 Security fibers and process for the preparation thereof  
Security fibers having enhanced antifalsification features are prepared by a process which comprises the steps of: i) braiding 5 to 30 denier fibers to form a twine; ii) dyeing the twine with a dye...
6585857 Method of manufacturing security elements for electronic article surveillance and security element  
The present invention is directed to a method of manufacturing security elements for electronic article surveillance, the security elements being made of at least two layers, and to a security...
6582556 Security paper and methods for production thereof  
This invention pertains to security paper and methods of making such security paper. The invention comprises a light-colored base paper having a non-protection area of a first thickness, and a...
6531032 Security paper  
This invention pertains to security paper and methods of making such security paper. The invention comprises a light-colored base paper having a non-protection area of a first thickness, and a...
6468393 Patterned paper  
Speckle-patterned paper is produced on the paper machine without the use of printing techniques by first preparing speckle-forming material and then introducing this into a contrasting color...
6402888 Security paper comprising localized areas with reduced thickness and opacity, and method for making same  
A method for making a paper sheet comprising at least one region which is thinner than the rest of the sheet. According to the method, a first paper layer ( 3 ) is formed on a wire in a first wet...
6396927 Variable density verification  
A counterfeit-resistant document comprises a contrasting layer and a dynamic camouflaging layer. The contrasting layer is highly contrastive and includes a latent message that can be reproduced...
6368455 Method for making security paper  
This invention pertains to security paper and methods of making such security paper. The invention comprises a light-colored base paper having a non-protection area of a first thickness, and a...
6355140 Method of manufacturing anti-falsification paper  
A method of manufacturing a thread-inserted window paper produces paper in which a thread is exposed to windows which are intermittently formed, and have clear contours, and in which thread is...
6270625 Method for manufacturing colored stripped paper  
A method for manufacturing paper having colored stripes, the method comprising the steps of feeding a slurry to a distributor and delivering the slurry from the distributor to a headbox through a...
6159585 Security paper  
A security paper indicates exposure to a solvent by a solvent resistant color signal. A metal mordant dye first co-reactant and a mordant dye second co-reactant form an organic solvent-insoluble...
6063239 Security paper  
The invention relates to security paper and in particular to a method for the manufacture of security paper that is provided with high-quality watermarks. In particular such a method comprises...
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...
6045656 Process for making and detecting anti-counterfeit paper  
This invention relates to a method for producing anti-counterfeit paper. Such processes of this type, generally, add a certain percentage of wood fiber lumens which have been loaded with one or...
6019872 Authenticatable bleached chemical paper products  
An authenticable paper product is prepared from a bleached chemical papermaking furnish containing a minor but detectable amount of lignin containing fibers selected from the group consisting of...
5989389 Method of producing visible, continuous streaks and/or delimited fields in paper  
The invention relates to a method of producing visible, preferably transparent or translucent, continuous streaks and/or delimited fields in paper in conjunction with forming a paper web in a paper...
5961432 Forgery preventive sheet and method of manufacturing same  
Anti-falsification paper is provided in which a thread is exposed at window portions provided on the surface of the paper, and which does not produce any cockles even when wound up continuously in...
5928471 Security features for paper  
The invention relates to improvements in security features in paper and in particular to a method of making paper and transparentising selected areas of paper to provide enhanced security features....
5897746 Method for equipping papers of value with authenticity features  
In a method for providing papers of value with authenticity features, a homogeneous mixture is produced in a defined concentration from a feature substance present in powder form and a gas. This...
5895557 Latex-saturated paper  
A saturated paper suitable for use in a clean room environment, which paper includes a fibrous web in which at least about 50 percent of the fibers comprising the web, on a dry weight basis, are...
5871615 Method for the manufacture of security paper  
Security paper carries an intricate tactile surface profile pattern which has been imparted to the paper during its manufacture, at a stage after initial de-watering but before final drying, by...
5868902 Security paper  
The present invention relates to a method for producing security paper which includes a security feature. The method comprises forming paper in a wet state, which paper incorporates on or more...
5817205 Method and apparatus for making paper of value having an optically variable security element  
A method and apparatus for making a data carrier (1) such as a paper of value or the like having an optically variable element (5,6) such as a hologram, applied to the surface, and an additional...
5744000 Method for making encoded filaments and use of encoded filaments to produce security paper  
The invention is concerned with the production of filaments or fibers each of which carries a recognizable "signature" (encoding). These filaments or fibers are produced by taking a film...
5697649 Articles employing a magnetic security feature  
Articles for use with security documents are disclosed which include planchettes and security threads that comprise a plastic substrate having at least one security feature employing soft magnetic...
5693135 Interference pigments containing reduced titanium oxide layers for preparing forgeryproof documents and packaging  
Interference pigments based on titanium dioxide-coated silicatic platelets which have been heated in a reducing atmosphere are useful for producing forgeryproof documents and packaging.
5660919 Sheet for security documents having high printability and high handling resistance  
A printable sheet having a high printing quality and a high handling resistance. At least one of the sides of the sheet is treated with a composition which comprises at least one filler and at...
5573639 Antifalsification paper having a thread- or band-shaped security element  
The invention relates to an antifalsification paper having a security element in the form of a thread or band which consists of a transparent plastic film with an at least partly opaque coating....
5567276 Paper of value and a method of producing it  
The present invention relates to a paper of value having an embedded security element, preferably an optically variable element in the form of hologram, diffraction or interference structures...
5516153 Security document and a method for producing it  
A security element for use in a security document such as a bank note, identity card or the like includes at least a partial metallic coating on a substrate and wherein the metallic coating...
5449200 Security paper with color mark  
A security paper is provided for incorporation in a security document, or other document having intrinsic value. The security paper includes a resinous substrate sheet on which indicia are printed....
5407535 Manufacture of lottery tickets  
The invention relates to a new lottery ticket paper for the manufacture of different kinds of lottery tickets, especially of the "instant lottery ticket" type, and a method of manufacturing said...
5405500 Method for making sheet materials and security paper  
This invention relates to a method of making sheet materials and security paper having partially embedded therein an elongate security element which is at least substantially exposed at one surface...
Matches 1 - 50 out of 184 1 2 3 4 >