Patents by Inventor Bart Waumans

Bart Waumans has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8827315
    Abstract: A security document precursor including one or more lamellae provided with two or more holes near a perimeter edge surface of the precursor, wherein the holes perforate the largest surface of the one or more lamellae, and wherein at least one of the holes is filled with a colored material which differs in color from at least one of the one or more lamellae, such that the colored material is visible from a direction perpendicular on the perimeter edge surface; wherein at least one of the one or more lamellae is transparent or translucent: or wherein at least one of the one or more lamellae is opaque and the opaque part of the at least one of the one or more lamellae between the perimeter edge and the hole filled with a colored material has been removed. A security document and a method of preparing the security document precursor are also disclosed.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: September 9, 2014
    Assignee: Agfa-Gevaert N.V.
    Inventors: Bart Waumans, Ingrid Geuens
  • Publication number: 20140232810
    Abstract: A method of colour laser marking a security document precursor including at least: a transparent biaxially stretched polyethylene terephthalate foil; at least one colourless colour forming layer for generating a colour different from black containing at least an infrared absorber a colour forming compound and a polymeric binder; and a laser markable polymeric support or a laser markable layer for generating a black colour; comprising the steps of: laser marking the colourless colour forming layer through the transparent polymeric foil with a infrared laser used in continuous wave mode to generate a colour different from black; and laser marking the laser markable polymeric support or the laser markable layer through the transparent polymeric foil with the same infrared laser but used in a pulsed mode to generate a black colour.
    Type: Application
    Filed: September 4, 2012
    Publication date: August 21, 2014
    Applicant: AGFA-GEVAERT N.V.
    Inventors: Bart Waumans, Paul Callant, Ingrid Geuens
  • Patent number: 8786651
    Abstract: A method of color laser marking a security document precursor including, in order, at least: a) a polymeric foil; b) at least one colorless color forming layer for generating a color different from black containing at least an infrared absorber, a color forming compound and a polymeric binder; and c) either a lasermarkable polymeric support or a lasermarkable layer for generating a black color; comprising the steps of: (1) laser marking a color different from black in the colorless color forming layer with an infrared laser used in continuous wave mode; and (2) laser marking a black color by carbonization in the lasermarkable polymeric support or the lasermarkable layer with the same infrared laser used in a pulsed mode; and wherein at least one of the polymeric foil and the lasermarkable polymeric support is transparent for the infrared light of the infrared laser.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: July 22, 2014
    Assignee: Agfa-Gevaert N.V.
    Inventors: Ingrid Geuens, Hubertus Van Aert, Paul Callant, Bart Waumans
  • Publication number: 20140193638
    Abstract: A security laminate (1) including in order a transparent oriented polyester support (2), a subbing layer (3) and an adhesive layer (4) which is coated on top of the subbing layer, wherein the binder of the adhesive layer is based on a mixture of a first and a second polymer in a weight ratio from 50/50 to 90/10, wherein the first polymer is a copolymer comprising vinyl acetate and at least 85 wt % of vinyl chloride based on the total weight of the first polymer; wherein the second polymer is a copolymer of styrene, butadiene and methylmethacrylate or a copolymer of vinyl butyral, vinyl acetate and vinyl alcohol; and wherein the binder of the subbing layer is based on a polyester-urethane copolymer.
    Type: Application
    Filed: September 3, 2012
    Publication date: July 10, 2014
    Applicant: AGFA-GEVAERT N.V.
    Inventors: Vera Drieghe, Peter Cantraine, Bart Waumans, Walther Wouters, Ingrid Geuens
  • Publication number: 20140099482
    Abstract: A method for preparing a colour laser marked article comprising the steps of: a) infrared laser marking a security element including a polymeric support and a colour forming layer comprising a colour forming compound, an infrared dye and a polymeric binder comprising vinyl acetate and at least 85 wt % of vinyl chloride based on the total weight of the binder; and b) exposing the laser marked security element with light having a wavelength higher than 440 nm. The light exposure of step b) hinders the falsification of an issued security document without significant increase of background density.
    Type: Application
    Filed: May 10, 2012
    Publication date: April 10, 2014
    Applicant: Agfa-Gevaert N.V.
    Inventors: Bart Waumans, Paul Callant
  • Publication number: 20130233932
    Abstract: A security document precursor including, in order, at least: a) a transparent biaxially stretched polyethylene terephthalate foil; b) a colourless colour forming layer containing at least an infrared absorber, a colour forming component and a polymeric binder; and c) a polymeric support; wherein the colourless colour forming layer contains at least one component forming a compound having a melting temperature of less than 20° C. upon laser marking the colourless colour forming layer with an infrared laser. Methods for securing a security document using the security document precursor are also disclosed.
    Type: Application
    Filed: December 2, 2011
    Publication date: September 12, 2013
    Applicant: AGFA-GEVAERT N.V.
    Inventors: Bart Waumans, Ingrid Geuens, Paul Callant, Hubertus Van Aert
  • Publication number: 20130235145
    Abstract: A method of colour laser marking a security document precursor including, in order, at least: a) a polymeric foil; b) at least one colourless colour forming layer for generating a colour different from black containing at least an infrared absorber, a colour forming compound and a polymeric binder; and c) either a lasermarkable polymeric support or a lasermarkable layer for generating a black colour; comprising the steps of: (1) laser marking a colour different from black in the colourless colour forming layer with an infrared laser used in continuous wave mode; and (2) laser marking a black colour by carbonization in the lasermarkable polymeric support or the lasermarkable layer with the same infrared laser used in a pulsed mode; and wherein at least one of the polymeric foil and the lasermarkable polymeric support is transparent for the infrared light of the infrared laser.
    Type: Application
    Filed: November 28, 2011
    Publication date: September 12, 2013
    Applicant: AGFA-GEVAERT N.V.
    Inventors: Ingrid Geuens, Hubertus Van Aert, Paul Callant, Bart Waumans
  • Publication number: 20130229008
    Abstract: A security document precursor including, in order: a) at least one transparent biaxially stretched polyester foil; b) one colourless colour forming layer containing at least an infrared absorber, a colourless dye-precursor and a polymeric binder; and c) a polymeric support; wherein the polymeric binder is copolymer including at least 90 wt % of a chlorinated ethylene and 1 wt % to 10 wt % of vinyl acetate both based on the total weight of the binder. Methods for making the security document precursor are also disclosed.
    Type: Application
    Filed: December 6, 2011
    Publication date: September 5, 2013
    Applicant: AGFA-GEVAERT N.V.
    Inventors: Hubertus Van Aert, Ingrid Geuens, Paul Callant, Bart Waumans
  • Publication number: 20130230704
    Abstract: A method of colour laser marking an article having a polymeric foil with at least one colourless layer containing an infrared absorber, a polymeric binder and a colour forming compound; including the steps of:—laser marking the colourless layer with an infrared laser using a first laser operation mode to generate a blue or cyan colour; and—laser marking the same colourless layer with an infrared laser using a second laser operation mode to generate a black colour, wherein the first laser operation mode applies less energy to the colourless layer than the second laser operation mode.
    Type: Application
    Filed: December 6, 2011
    Publication date: September 5, 2013
    Applicant: AGFA-GEVAERT N.V.
    Inventors: Paul Callant, Ingrid Geuens, Bart Waumans, Hubertus Van Aert
  • Publication number: 20130008965
    Abstract: A method of preparing a security laminate including the steps of: a) providing a polyethylene terephthalate substrate (1); b) stretching the polyethylene terephthalate substrate in either a longitudinal or a transversal direction; c) coating and drying a first coating composition (2) on the stretched polyethylene terephthalate substrate; d) stretching the coated polyethylene terephthalate substrate in the longitudinal or transversal direction not selected in step b) in order to obtain a coated biaxially stretched polyethylene terephthalate substrate having a layer of the first coating composition with a dry thickness between 50 nm and 400 nm; e) coating and drying a second coating composition (3) on top of the dry layer on the biaxially stretched substrate, wherein the first coating composition contains a copolymer selected from the group consisting of a hydroxyl—functional, partially-hydrolyzed vinyl chloride/vinyl acetate copolymer and a polyester-urethane copolymer; and wherein the second coating compositi
    Type: Application
    Filed: March 28, 2011
    Publication date: January 10, 2013
    Applicant: AGFA-GEVAERT N.V.
    Inventors: Ingrid Geuens, Bart Waumans, Vera Drieghe
  • Publication number: 20120231240
    Abstract: A security film including a support (1) and a laser markable layer (3), wherein the laser markable layer includes i) a laser additive; ii) a polymer selected from the group consisting of polystyrene, polycarbonate and styrene acrylonitrile; iii) an initiator; and iv) at least 15 wt % of radiation curable compound based on the total dry weight of the laser markable layer, wherein the radiation curable compound has a viscosity of less than 100 mPa·s at 25° C. and at a shear rate of 100 s?1. A security document and a method for preparing the security film are also disclosed.
    Type: Application
    Filed: December 17, 2010
    Publication date: September 13, 2012
    Applicant: AGFA-GEVAERT N.V.
    Inventors: Carlo Uyttendaele, Bart Aerts, Bart Waumans, Ingrid Geuens
  • Publication number: 20120223516
    Abstract: A security document precursor including one or more lamellae provided with two or more holes near a perimeter edge surface of the precursor, wherein the holes perforate the largest surface of the one or more lamellae, and wherein at least one of the holes is filled with a coloured material which differs in colour from at least one of the one or more lamellae, such that the coloured material is visible from a direction perpendicular on the perimeter edge surface; wherein at least one of the one or more lamellae is transparent or translucent: or wherein at least one of the one or more lamellae is opaque and the opaque part of the at least one of the one or more lamellae between the perimeter edge and the hole filled with a coloured material has been removed. A security document and a method of preparing the security document precursor are also disclosed.
    Type: Application
    Filed: December 9, 2010
    Publication date: September 6, 2012
    Applicant: AGFA-GEVAERT N.V.
    Inventors: Bart Waumans, Ingrid Geuens
  • Publication number: 20120217736
    Abstract: A security film including, in order, a transparent biaxially oriented polyethylene terephthalate support (1), a subbing layer (2, 2?) and a laser markable layer (3, 3?) comprising a laser additive and one or more polymers selected from the group consisting of polystyrene, polycarbonate and styrene acrylonitrile.
    Type: Application
    Filed: December 17, 2010
    Publication date: August 30, 2012
    Applicant: AGFA-GEVAERT N.V.
    Inventors: Carlo Uyttendaele, Bart Aerts, Bart Waumans, Ingrid Geuens
  • Patent number: 7307041
    Abstract: A substantially light-insensitive thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, a binder and at least one compound selected from the group consisting of mono-alkyl tetrachloro-phthalates, di-alkyl tetrachlorophthalates and N-(tetrachloro-phthalimyl)n-alkanes, wherein n is an integer greater than or equal to 1.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: December 11, 2007
    Assignee: Agfa Healthcare
    Inventors: Ingrid Geuens, Johan Loccufier, Bart Waumans
  • Publication number: 20060063670
    Abstract: A substantially light-insensitive thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, a binder and at least one compound selected from the group consisting of mono-alkyl tetrachloro-phthalates, di-alkyl tetrachlorophthalates and N-(tetrachloro-phthalimyl)n-alkanes, wherein n is an integer greater than or equal to 1.
    Type: Application
    Filed: September 6, 2005
    Publication date: March 23, 2006
    Applicant: AGFA-GEVAERT
    Inventors: Ingrid Geuens, Johan Loccufier, Bart Waumans