Patents by Inventor Steven Lezy
Steven Lezy 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).
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Patent number: 8216769Abstract: A heat-sensitive negative-working lithographic printing plate precursor includes a support having a hydrophilic surface or which is provided with a hydrophilic layer and a coating provided thereon, the coating including an image-recording layer which includes hydrophobic thermoplastic polymer particles, a binder, and an infrared absorbing dye; wherein the hydrophobic thermoplastic polymer particles have an average particle diameter, measured by Photon Correlation Spectroscopy, of more than 10 nm and less than 40 nm; the amount of the IR-dye, without taking into account an optional counter ion, is more than 0.80 mg per m2 of the total surface of the thermoplastic polymer particles, measured by Hydrodynamic Fractionation; and the amount of hydrophobic thermoplastic polymer particles relative to the total weight of the ingredients of the imaging layer is at least 60%.Type: GrantFiled: May 22, 2007Date of Patent: July 10, 2012Assignee: Agfa Graphics NVInventors: Hieronymus Andriessen, Steven Lezy, Hubertus Van Aert, Joan Vermeersch
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Patent number: 8133657Abstract: A method for making a lithographic printing plate includes the steps of (i) providing a lithographic printing plate precursor including a coating, the coating including an image-recording layer which includes hydrophobic thermoplastic polymer particles, a binder, and an infrared absorbing dye, wherein the hydrophobic thermoplastic polymer particles have an average particle diameter, measured by Photon Correlation Spectroscopy, of more than 10 nm and less than 40 nm, and the amount of the IR-dye, without taking into account an optional counter ion, is more than 0.70 mg per m2 of the total surface of the thermoplastic polymer particles, measured by Hydrodynamic Fractionation, and the amount of hydrophobic thermoplastic polymer particles relative to the total weight of the ingredients of the imaging layer is at least 60%; (ii) exposing the precursor to infrared light; and (iii) developing the exposed precursor in an alkaline aqueous solution.Type: GrantFiled: May 22, 2007Date of Patent: March 13, 2012Assignee: Agfa Graphics NVInventors: Hieronymus Andriessen, Steven Lezy, Hubertus Van Aert, Joan Vermeersch
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Publication number: 20090258314Abstract: A heat-sensitive negative-working lithographic printing plate precursor include a support having a hydrophilic surface or which is provided with a hydrophilic layer and a coating provided thereon, the coating including an image-recording layer which includes hydrophobic thermoplastic polymer particles, a binder, and an infrared absorbing dye; wherein the hydrophobic thermoplastic polymer particles have an average particle diameter, measured by Photon Correlation Spectroscopy, of more than 10 nm and less than 40 nm; the amount of the IR-dye, without taking into account an optional counter ion, is more than 0.80 mg per m2 of the total surface of the thermoplastic polymer particles, measured by Hydrodynamic Fraction; and—the amount of hydrophobic thermoplastic polymer particles relative to the total weight of the ingredients of the imaging layer is at least 60-%.Type: ApplicationFiled: May 22, 2007Publication date: October 15, 2009Applicant: AGFA GRAPHICS NVInventors: Hieronymus Andriessen, Steven Lezy, Hubertus Van Aert, Joan Vermeersch
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Publication number: 20090155722Abstract: A method for making a lithographic printing plate includes the steps of (i) providing a negative-working, heat-sensitive lithographic printing plate precursor including a support having a hydrophilic surface or which is provided with a hydrophilic layer and a coating provided thereon, the coating including an image-recording layer which includes hydrophobic thermoplastic polymer particles, a binder, and an infrared absorbing dye, wherein the hydrophobic thermoplastic polymer particles have an average particle diameter, measured by Photon Correlation Spectroscopy, of more than 10 nm and less than 40 nm, and the amount of the IR-dye, without taking into account an optional counter ion, is more than 0.Type: ApplicationFiled: May 22, 2007Publication date: June 18, 2009Applicant: AGFA GRAPHICS NVInventors: Hieronymus Andriessen, Steven Lezy, Hubertus Van Aert, Joan Vermeersch
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Publication number: 20060201360Abstract: A method for making a negative-working, heat-sensitive printing plate precursor capable of switching from a hydrophilic state into a hydrophobic state upon exposure to heat and/or infrared light, including the steps of (i) providing a support having a surface comprising titanium, (ii) modifying the surface by producing an oxide of titanium following the steps of (1) anodizing the support and (2) annealing the anodized support under reduced pressure. Additionally, a method for making a negative-working, heat-sensitive printing plate precursor capable of switching from a hydrophilic state into a hydrophobic state upon exposure to heat and/or infrared light, including the steps of (i) providing a support having a surface including titanium, (ii) modifying the surface by producing an oxide of titanium following the steps of (1) etching the support and (2) anodizing the etched support.Type: ApplicationFiled: March 8, 2006Publication date: September 14, 2006Inventors: Hieronymus Andriessen, Steven Lezy
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Patent number: 6558575Abstract: Highly efficient ZnS:Mn phosphors can be obtained by using triazole or diazole compounds during homogeneous precipitation in aqueous medium. Coated layers containing such phosphors can be incorporated in Thin Film Inorganic Light Emitting Diodes.Type: GrantFiled: January 24, 2002Date of Patent: May 6, 2003Assignee: Agfa-GevaertInventors: Hieronymus Andriessen, Steven Lezy
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Publication number: 20020149025Abstract: Highly efficient ZnS:Mn phosphors can be obtained by using triazole or diazole compounds during homogeneous precipitation in aqueous medium. Coated layers containing such phosphors can be incorporated in Thin Film Inorganic Light Emitting Diodes.Type: ApplicationFiled: January 24, 2002Publication date: October 17, 2002Inventors: Hieronymus Andriessen, Steven Lezy
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Patent number: 6306747Abstract: A conductive metal oxide based layer on a substrate is prepared by chemically reducing a metal salt in aqueous solution, coating the resulting aqueous metal dispersion after washing onto a substrate, preferably glass, and subjecting the coated layer to an oxidizing treatment, e.g. a heat step. In a preferred embodiment the metal oxide is tin oxide, or a mixture of tin oxide and another metal oxide.Type: GrantFiled: February 4, 2000Date of Patent: October 23, 2001Assignee: Agfa-GevaertInventors: Hieronymus Andriessen, Steven Lezy
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Patent number: 6251475Abstract: A process is disclosed for the preparation of semi-soft or soft magnetic layers. The process involves chemical reduction in aqueous medium of one or more types of metal ions including nickel ions, washing the resulting dispersion of metal particles, and coating this dispersion onto a support. The resulting magnetic layers can be used in an anti-theft system.Type: GrantFiled: April 30, 1999Date of Patent: June 26, 2001Assignee: Agfa-GevaertInventors: Hieronymus Andriessen, Steven Lezy
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Patent number: 6245494Abstract: Colloidal metal alloy compositions are prepared by chemical reduction of mixtures of at least two types of metal ions in an aqueous medium. Coating such a composition onto a support provides heat mode recording elements with improved sensitivity to laser radiation.Type: GrantFiled: July 7, 1999Date of Patent: June 12, 2001Assignee: Agfa-GevaertInventors: Hieronymus Andriessen, Steven Lezy, Luc Leenders
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Patent number: 6187508Abstract: An improved heat mode recording element based on a thin metal layer, preferably bismuth, is disclosed, characterized in that it contains hypophosphorous acid, or phosphorous acid, or a mixture of both.Type: GrantFiled: June 24, 1999Date of Patent: February 13, 2001Assignee: AGFA-Gevaert, N.V.Inventors: Hieronymus Andriessen, Steven Lezy
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Patent number: 6132927Abstract: A process was disclosed for the preparation of a heat mode recording element comprising a transparent support and a thin metal recording layer, characterized in that said thin metal layer was formed by the following steps: (1) preparing a solution containing metal ions and preferably a binder, (2) reducing said metal ions by a reducing agent, (3) coating said aqueous medium on said transparent support, optionally after removal of superfluous salts.The process disclosed is less complicated and more economic than previously known methods for applying a thin metal recording film.Type: GrantFiled: April 13, 1998Date of Patent: October 17, 2000Assignee: Agfa-Gevaert, N.V.Inventors: Eddie Daems, Hieronymus Andriessen, Luc Leenders, Steven Lezy
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Patent number: 5962181Abstract: A process is disclosed for the preparation of a heat mode recording element comprising (A) laminating a layer pack (1) containing a temporary support, a release layer, a protective layer, an optional intermediate layer, a subbing layer and a thin metal layer, preferably a bismuth layer, to a layer pack (2) comprising a (thermo)adhesive layer and a permanent support, and (B) peeling off the temporary support and the release layer. In an alternative embodiment, when the protective layer contains a radiation-curable composition, the intermediate layer and the subbing layer can be omitted. A heat mode image is obtained by exposing information-wise a thus defined recording element by means of intense laser radiation, preferably produced by an infra-red laser.Type: GrantFiled: April 22, 1997Date of Patent: October 5, 1999Assignee: AGFA-Gevaert, N.V.Inventors: Eddie Daems, Steven Lezy, Johan Lamotte, Luc Leenders