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: 10570297
    Abstract: A UV curable colourless inkjet liquid includes at least one radical photoinitiator and a polymerizable composition, wherein the polymerizable composition contains a mixture of: a) 25 to 50 wt % of a monofunctional methacrylate; b) 40 to 70 wt % of a polyfunctional acrylate; and c) 0 to 15 wt % of a monofunctional acrylate; with the weight percentage wt % based on the total weight of the polymerizable composition.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: February 25, 2020
    Assignee: AGFA NV
    Inventors: Koen Steert, Bart Waumans
  • Patent number: 10245866
    Abstract: A method of producing a security document includes the steps of producing a first part of a color image by color laser marking a security document precursor; and producing a second part of the color image by a second imaging technique different from laser marking. The resulting security document is more difficult to falsify.
    Type: Grant
    Filed: November 5, 2013
    Date of Patent: April 2, 2019
    Assignee: AGFA-GEVAERT
    Inventors: Bart Waumans, Paul Callant, Bart Aerts
  • Publication number: 20180079919
    Abstract: A UV curable colourless inkjet liquid includes at least one radical photoinitiator and a polymerizable composition, wherein the polymerizable composition contains a mixture of: a) 25 to 50 wt % of a monofunctional methacrylate; b) 40 to 70 wt % of a polyfunctional acrylate; and c) 0 to 15 wt % of a monofunctional acrylate; with the weight percentage wt % based on the total weight of the polymerizable composition.
    Type: Application
    Filed: February 10, 2016
    Publication date: March 22, 2018
    Inventors: Koen STEERT, Bart WAUMANS
  • Patent number: 9829784
    Abstract: A set of laminates includes an outer laminate and an inner laminate, wherein the outer laminate includes a transparent polymeric support including on a first side of the support a color laser markable layer containing an infrared dye having an absorption maximum ?max(IR-1) in the infrared region; wherein the inner laminate includes a transparent polymeric support including on, a first side of the transparent polymeric support, a color laser markable layer containing an infrared dye having an absorption maximum ?max(IR-2) in the infrared region and, on a second side of the transparent polymeric support, a color laser markable layer containing an infrared dye having an absorption maximum ?max(IR-3) in the infrared region; and the conditions a) and b) are satisfied: ?max(IR-1)>?max(IR-2)>?max(IR-3); and??a) ?max(IR-1)>1100 nm and ?max(IR-3)<1000 nm.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: November 28, 2017
    Assignee: AGFA-GEVAERT
    Inventors: Bart Waumans, Paul Callant, Ingrid Geuens, Bart Aerts
  • Patent number: 9604490
    Abstract: A method for preparing a color laser marked article using three infrared lasers L-1, L-2 and L-3 having respectively a laser emission wavelength of ?(L-1), ?(L-2) and ?(L-3) includes the steps of laser marking with the infrared laser L-1 a first color laser markable layer including an infrared dye IR-1 having an absorption maximum in the infrared region ?max(IR-1); laser marking with the infrared laser L-2 a second color laser markable layer including an infrared dye IR-2 having an absorption maximum in the infrared region ?max(IR-2); laser marking with the infrared laser L-3 a third color laser markable layer including an infrared dye IR-3 having an absorption maximum in the infrared region ?max(IR-3); and at least partially exposing the color laser markable article to light having a wavelength between 520 nm and 700 nm, wherein, the laser emission wavelengths satisfy the condition of: ?(L-1)>?(L-2)>?(L-3); the infrared red dye absorption maxima satisfy the condition of: ?max(IR-1)>?max(IR-2)>?ma
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: March 28, 2017
    Assignee: AGFA-GEVAERT
    Inventors: Paul Callant, Bart Waumans, Ingrid Geuens, Bart Aerts
  • Patent number: 9434863
    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: Grant
    Filed: September 3, 2012
    Date of Patent: September 6, 2016
    Assignee: Agfa-Gevaert N.V.
    Inventors: Vera Drieghe, Peter Cantraine, Bart Waumans, Walther Wouters, Ingrid Geuens
  • Patent number: 9403395
    Abstract: A color laser markable laminate includes at least a transparent polymeric support and a color forming layer including a leuco dye; an infrared dye; and a polymeric binder including vinyl acetate and at least 85 wt % of vinyl chloride based on the total weight of the binder; wherein the color laser markable laminate includes a specific phenol stabilizer sterically hindered by a ring containing three nitrogen atoms. A method for preparing a color laser marked document is also disclosed.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: August 2, 2016
    Assignee: AGFA-GEVAERT
    Inventors: Bart Waumans, Paul Callant, Johan Loccufier
  • Publication number: 20150306887
    Abstract: A method of producing a security document includes the steps of producing a first part of a colour image by colour laser marking a security document precursor; and producing a second part of the colour image by a second imaging technique different from laser marking. The resulting security document is more difficult to falsify.
    Type: Application
    Filed: November 5, 2013
    Publication date: October 29, 2015
    Applicant: AGFA-GEVAERT
    Inventors: Bart WAUMANS, Paul CALLANT, Bart AERTS
  • Publication number: 20150290959
    Abstract: A colour laser markable laminate includes at least a transparent polymeric support and a colour forming layer including a leuco dye; an infrared dye; and a polymeric binder including vinyl acetate and at least 85 wt % of vinyl chloride based on the total weight of the binder; wherein the colour laser markable laminate includes a specific phenol stabilizer sterically hindered by a ring containing three nitrogen atoms. A method for preparing a colour laser marked document is also disclosed.
    Type: Application
    Filed: March 12, 2013
    Publication date: October 15, 2015
    Inventors: Bart WAUMANS, Paul CALLANT, Johan LOCCUFIER
  • Publication number: 20150277221
    Abstract: A set of laminates includes an outer laminate and an inner laminate, wherein the outer laminate includes a transparent polymeric support includinq on a first side of the support a colour laser markable layer containing an infrared dye having an absorption maximum ?max(IR-1) in the infrared region; wherein the inner laminate includes a transparent polymeric support including on, a first side of the transparent polymeric support, a colour laser markable layer containing an infrared dye having an absorption maximum ?max(IR-2) in the infrared region and, on a second side of the transparent polymeric support, a colour laser markable layer containing an infrared dye having an absorption maximum ?max(IR-3) in the infrared region; and the conditions a) and b) are satisfied: ?max(IR-1)>?max(IR-2)>?max(IR-3); and??a) ?max(IR-1)>1100 nm and ?max(IR-3)<1000 nm.
    Type: Application
    Filed: October 10, 2013
    Publication date: October 1, 2015
    Applicant: AGFA-GEVAERT
    Inventors: Bart Waumans, Paul Callant, Ingrid Geuens, Bart Aerts
  • Publication number: 20150261080
    Abstract: Infrared dyes soluble in methylene chloride have an infrared absorption maximum above 1100 nm and minor discolouration in the visual spectrum. The infrared dyes are especially useful for producing multicolour laser marked security documents having reduced background discoloration and enhanced colour gamut.
    Type: Application
    Filed: October 10, 2013
    Publication date: September 17, 2015
    Inventors: Paul Callant, Bart Waumans
  • Publication number: 20150251481
    Abstract: A method for preparing a color laser marked article using three infrared lasers L-1, L-2 and L-3 having respectively a laser emission wavelength of ?(L-1), ?(L-2) and ?(L-3) includes the steps of laser marking with the infrared laser L-1 a first color laser markable layer including an infrared dye IR-1 having an absorption maximum in the infrared region ?max(IR-1); laser marking with the infrared laser L-2 a second color laser markable layer including an infrared dye IR-2 having an absorption maximum in the infrared region ?max(IR-2); laser marking with the infrared laser L-3 a third color laser markable layer including an infrared dye IR-3 having an absorption maximum in the infrared region ?max(IR-3); and at least partially exposing the color laser markable article to light having a wavelength between 520 nm and 700 nm, wherein, the laser emission wavelengths satisfy the condition of: ?(L-1)>?(L-2)>?(L-3); the infrared red dye absorption maxima satisfy the condition of: ?max(IR-1)>?max(IR-2)>?ma
    Type: Application
    Filed: October 10, 2013
    Publication date: September 10, 2015
    Inventors: Paul Callant, Bart Waumans, Ingrid Geuens, Bart Aerts
  • Patent number: 9067451
    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: Grant
    Filed: December 17, 2010
    Date of Patent: June 30, 2015
    Assignee: Agfa-Gevaert N.V.
    Inventors: Carlo Uyttendaele, Bart Aerts, Bart Waumans, Ingrid Geuens
  • Patent number: 9067450
    Abstract: A method of color laser marking a security document precursor including at least: a transparent biaxially stretched polyethylene terephthalate foil; 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 a laser markable polymeric support or a laser markable layer for generating a black color; comprising the steps of: laser marking the colorless color forming layer through the transparent polymeric foil with a infrared laser used in continuous wave mode to generate a color 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 color.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: June 30, 2015
    Assignee: Agfa-Gevaert N.V.
    Inventors: Bart Waumans, Paul Callant, Ingrid Geuens
  • Patent number: 9012018
    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: Grant
    Filed: December 17, 2010
    Date of Patent: April 21, 2015
    Assignee: Agfa-Gevaert N.V.
    Inventors: Carlo Uyttendaele, Bart Aerts, Bart Waumans, Ingrid Geuens
  • Patent number: 8973830
    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: Grant
    Filed: March 28, 2011
    Date of Patent: March 10, 2015
    Assignee: Agfa-Gevaert N.V.
    Inventors: Ingrid Geuens, Bart Waumans, Vera Drieghe
  • Patent number: 8975211
    Abstract: A security document precursor including, in order, at least: a) a transparent biaxially stretched polyethylene terephthalate foil; b) a colorless color forming layer containing at least an infrared absorber, a color forming component and a polymeric binder; and c) a polymeric support; wherein the colorless color forming layer contains at least one component forming a compound having a melting temperature of less than 20° C. upon laser marking the colorless color forming layer with an infrared laser. Methods for securing a security document using the security document precursor are also disclosed.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: March 10, 2015
    Assignee: Agfa-Gevaert N.V.
    Inventors: Bart Waumans, Ingrid Geuens, Paul Callant, Hubertus Van Aert
  • Patent number: 8921265
    Abstract: A security document precursor including, in order: a) at least one transparent biaxially stretched polyester foil; b) one colorless color forming layer containing at least an infrared absorber, a colorless 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: Grant
    Filed: December 6, 2011
    Date of Patent: December 30, 2014
    Assignee: Agfa-Gevaert N.V.
    Inventors: Hubertus Van Aert, Ingrid Geuens, Paul Callant, Bart Waumans
  • Patent number: 8921266
    Abstract: A method for preparing a color laser marked article comprising the steps of: a) infrared laser marking a security element including a polymeric support and a color forming layer comprising a color 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: Grant
    Filed: May 10, 2012
    Date of Patent: December 30, 2014
    Assignee: Agfa-Gevaert N.V.
    Inventors: Bart Waumans, Paul Callant
  • Patent number: 8912118
    Abstract: A method of color laser marking an article having a polymeric foil with at least one colorless layer containing an infrared absorber, a polymeric binder and a color forming compound; including the steps of:—laser marking the colorless layer with an infrared laser using a first laser operation mode to generate a blue or cyan color; and—laser marking the same colorless layer with an infrared laser using a second laser operation mode to generate a black color, wherein the first laser operation mode applies less energy to the colorless layer than the second laser operation mode. Also disclosed is an article, such as a security document, including a polymeric foil and a colorless layer containing laser marked graphical data having a blue or cyan color and laser marked information having a black color.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: December 16, 2014
    Assignee: Agfa-Gevaert N.V.
    Inventors: Paul Callant, Ingrid Geuens, Bart Waumans, Hubertus Van Aert