Patents by Inventor Leo Oelbrandt
Leo Oelbrandt 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: 11744314Abstract: The present invention refers to methods for producing a conformal visor (1b) with at least one integrated ophthalmic lens (2, 2a, 2b), wherein the at least one ophthalmic lens (2, 2a, 2b) is built up on the planar visor (1a) from layers of printing ink in an additive manufacturing scheme, wherein the layers are obtained through a targeted placement of droplets of printing ink at least partially side by side. The present invention further relates to a corresponding conformal visor (1b) with at least one integrated ophthalmic lens (2, 2a, 2b).Type: GrantFiled: September 5, 2018Date of Patent: September 5, 2023Assignee: META PLATFORMS TECHNOLOGIES, LLCInventors: Leo Oelbrandt, Juan Carlos Dürsteler
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Publication number: 20200375298Abstract: The present invention refers to methods for producing a conformal visor (1b) with at least one integrated ophthalmic lens (2, 2a, 2b), wherein the at least one ophthalmic lens (2, 2a, 2b) is built up on the planar visor (1a) from layers of printing ink in an additive manufacturing scheme, wherein the layers are obtained through a targeted placement of droplets of printing ink at least partially side by side. The present invention further relates to a corresponding conformal visor (1b) with at least one integrated ophthalmic lens (2, 2a, 2b).Type: ApplicationFiled: September 5, 2018Publication date: December 3, 2020Inventors: Leo Oelbrandt, Juan Carlos Dürsteler
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Patent number: 6523472Abstract: A method for preparing a lithographic printing plate by means of ink jet printing is disclosed. The ink jet fluid contains an oleophilizing compound having in its chemical structure a phosphorous containing group capable of reacting with the surface of a lithographic receiver.Type: GrantFiled: May 23, 2001Date of Patent: February 25, 2003Assignee: Agfa-GevaertInventors: Johan Loccufier, Marc Van Damme, Leo Oelbrandt, Peter Hendrikx
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Patent number: 6523473Abstract: A method for preparing a lithographic printing plate by means of ink jet is disclosed. The ink jet fluid contains an oleophilizing compound chosen from the group consisting of a catechol, a pyrogallol, and a salicylic acid.Type: GrantFiled: May 23, 2001Date of Patent: February 25, 2003Assignee: Agfa-GevaertInventors: Johan Loccufier, Marc Van Damme, Huub Van Aert, Govert De Baecke, Leo Oelbrandt, Luc Leenders
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Patent number: 6460957Abstract: An image which is produced by jetting a liquid pigmented ink to a receiving layer having a N-containing polymer as binder, preferably gelatin, is useful as master for the exposure of a printing plate.Type: GrantFiled: September 23, 1999Date of Patent: October 8, 2002Assignee: Agfa-GevaertInventors: Dirk Cyriel Quintens, Leo Oelbrandt, Marc Graindourze
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Patent number: 6378974Abstract: A method is disclosed for making on a transparent receiver material a continuous tone image, e.g. for medical diagnostic purposes, with an obtainable maximal transmission density in the visual region greater than 3.0, by means of ink jet. The method comprises ink-jetting combinations of at least one liquid black pigmented ink and at least one liquid grey ink to a transparent receiver comprising an ink receiving layer, a transparent support and a backing layer, said ink receiving layer comprising a N-containing polymer, preferably gelatin, as binder, and being substantially free of particles having an average size larger than 1 &mgr;m. Preferably the transparent receiver exhibits a haze value between 10 and 20%, determined according to standard test ASTM D 1003, due to the presence of a spacing agent in the backing layer.Type: GrantFiled: September 1, 1999Date of Patent: April 30, 2002Assignee: AGFA-GevaertInventors: Leo Oelbrandt, Dirk Quintene, Luc Leenders
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Patent number: 6358668Abstract: A material is disclosed which is suitable for making a flexographic printing plate and comprises in the order given a base, a photopolymer layer, a barrier layer wherein the main component is a polymer different from gelatin, and an ink receiving layer wherein the main component is gelatin. An image having a high optical density can be printed on the ink receiving layer by image-wise jetting a water-based ink because the gelatin in the ink receiving layer has excellent ink receptivity and because the barrier layer reduces diffusion of monomers from the photopolymer layer to the ink receiving layer. The image present in or on the ink receiving layer can then be used as a photomask for the subsequent flood exposure of the photopolymer layer. After processing, a flexographic printing plate is obtained.Type: GrantFiled: July 13, 2000Date of Patent: March 19, 2002Assignee: Agfa-GevaertInventors: Luc Leenders, Eddie Daems, Ronn Andriessen, Leo Oelbrandt
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Publication number: 20020029708Abstract: A method for preparing a lithographic printing plate by means of ink jet is disclosed. The ink jet fluid contains an oleophilizing compound chosen from the group consisting of a catechol, a pyrogallol, and a salicylic acid.Type: ApplicationFiled: May 23, 2001Publication date: March 14, 2002Inventors: Johan Loccufier, Marc Van Damme, Huub Van Aert, Govert De Baecke, Leo Oelbrandt, Luc Leenders
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Patent number: 6354209Abstract: According to the present invention there is provided a method for making a lithographic printing plate including the steps of dispensing in a predetermined pattern a latex of particles of a hydrophobic polymer onto an optionally modified hydrophilic surface of a lithographic base, characterized in that the hydrophobic polymer and the optionally modified hydrophilic surface of the lithographic base have mutually reactive groups.Type: GrantFiled: June 29, 1999Date of Patent: March 12, 2002Assignee: Agfa-GevaertInventors: Huub Van Aert, Leo Oelbrandt
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Patent number: 6325474Abstract: The invention relates to a device (1) for writing on thermographic material (5). The inventive device (1) comprises a heater (20) with which the thermographic material (5) is preheated to a temperature, which is lower than a writing temperature. The thermographic material (5) can be written on with a writing instrument (10) which is distanced from the thermographic material (5) after input of an information signal (s(t)). The writing instrument (10) has a plurality of individually controllable point sources (30-33; 51-53). The thermographic material (5) can be written on in a point-by-point manner with said point sources (30-33; 51-53).Type: GrantFiled: April 19, 2000Date of Patent: December 4, 2001Assignee: AGFA Gevaert AGInventors: Wolfram Betzold, Leo Oelbrandt, Friedrich Stumpf, Thomas Zehetmaier, Ivan Hoogmartens, Luc Leenders, Hans Strijckers, Herbert Gebele, Franz Kappeler
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Patent number: 6033740Abstract: According to the present invention there is provided a method for making lithographic printing plates including the steps of dispensing in a predetermined pattern curable hydrophobic ink from a printhead of a printer onto a lithographic base or polymerizable ink from a printhead of a printer onto a lithographic base which is coated with a polymerization initiator by spraying droplets of the ink onto the lithographic base in the predetermined pattern and curing the sprayed droplets of the ink upon the lithographic base, characterized in that the lithographic base comprises a flexible support having a cross-linked hydrophilic surface.Type: GrantFiled: December 16, 1998Date of Patent: March 7, 2000Assignee: Agfa-Gevaert, N.V.Inventors: Leo Oelbrandt, Luc Leenders, Stefaan De Meutter, Luc Vanmaele
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Patent number: 5968714Abstract: A recording process comprising the steps of: information-wise exposing to radiation a photosensitive thermally developable photographic material, thereby producing a latent image; and heating the photosensitive thermally developable photographic material, characterized in that the photosensitive thermally developable photographic material is on one and the same holding or guiding means during both the information-wise exposure step and the heating step; and the information-wise exposure step is carried out during the heating step; and a method of increasing the photosensitivity of a photosensitive thermally developable photographic material.Type: GrantFiled: September 5, 1997Date of Patent: October 19, 1999Assignee: Agfa-GevaertInventors: Luc Leenders, Jacobus Bosschaerts, Robert Overmeer, Eddie Daems, Leo Oelbrandt, Hans Strijckers, Thomas Zehetmaier, Jurgen Muller, Friedrich Stumpf, Gerald Halbedl
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Patent number: 5965331Abstract: An apparatus and a method for bringing a thermographic imaging element (11) to a desired temperature by means of thermal contact with a heating body (10, 30) which is at least filled with an accessory material in a first phase (15) and with said accessory material in a second phase (16) comprise pressure setting means (17, 18) for setting a desired pressure, energy means (19) for exchanging thermal energy with said heating body, detection means for detecting a phase or a phase transition of said accessory material, and relocation means for bringing said imaging element into contact with said heating body.Type: GrantFiled: June 26, 1997Date of Patent: October 12, 1999Assignee: AGFA-Gevaert, N.V.Inventors: Leo Oelbrandt, Karl Anthonissen, Marc De Niel, Martin De Kegelaer
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Patent number: 5863859Abstract: A heat-sensitive recording material suited for use in direct thermal imaging, wherein said recording material comprises: (i) a layer (1) containing uniformly distributed in a film-forming water-insoluble resin binder a substantially light-insensitive organic metal salt, preferably a silver salt, and (ii) a layer (2) in direct contact with said layer (1) or in thermal working relationship therewith through the intermediary of a spacer layer (3), characterized in that said layer (2) contains, uniformly distributed in a film-forming water-soluble hydrophilic binder at least one organic reducing agent that is capable of diffusing out of said layer (2) into said layer (1) on heating said recording material, and is coated from an aqueous solution.Type: GrantFiled: August 6, 1996Date of Patent: January 26, 1999Assignee: Agfa-Gevaert N.V.Inventors: Herman Uytterhoeven, Leo Oelbrandt, Carlo Uyttendaele
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Patent number: 5815191Abstract: A method and apparatus is provided for operating a direct electrostatic printer whereby no printer adjustments are required by the operator. The direct thermal printer includes a print head and a variable speed motor for reproducing images on an imaging element.Type: GrantFiled: January 11, 1996Date of Patent: September 29, 1998Assignee: Agfa-GevaertInventors: Joseph Michielsen, David Tilemans, Leo Oelbrandt, Robert Overmeer, Marc De Clerck
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Patent number: 5804355Abstract: Thermal recording or producing of a contone image comprises an imagewise and scanwise exposing a thermographic recording material with a set (s) of radiation beams (b), wherein at any given moment (t) during the exposure at least two radiation beams impinge on different dots (m) of a scanline (l), so that by completion of the exposure each effective dot of the scanline has been impinged. Photo-thermographic recording or producing comprises a developing of the exposed photo-thermographic recording material with a set (s) of radiation beams (b), wherein at any given moment (t) during the development at least two radiation beams impinge on different dots (m) of a scanline (l), so that by completion of the development step each dot of the scanline has been impinged by all radiation beams.Type: GrantFiled: March 6, 1997Date of Patent: September 8, 1998Assignee: Agfa-Gevaert N.V.Inventors: Jacobus Herman Bosschaerts, Robert Theodoor Overmeer, Leo Oelbrandt, Hans Louis Strijckers, Eddie Roza Daems
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Patent number: 5751325Abstract: An ink jet printing process comprising the steps of image-wise projecting droplets of liquid onto a receiving material thus bringing into working relationship on said receiving material a reducible metal compound (A), a reducing agent (B) for said metal compound and physical development nuclei (C) that catalyze the reduction of said metal compound to metal.Type: GrantFiled: May 18, 1995Date of Patent: May 12, 1998Assignee: AGFA-Gevaert, N.V.Inventors: Luc Leenders, Leo Oelbrandt, Jan Van den Bogaert, Guido Desie
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Patent number: 5637550Abstract: A heat-sensitive recording material suited for use in direct thermal imaging and having image-stabilization properties which material contains in a binder on a support (i) a substantially light-insensitive organic silver salt capable of thermally activated reduction to silver in thermal working relationship with (ii) at least one reducing agent capable of reducing the substantially light-insensitive organic silver salt when thermally activated, characterized in that the recording material contains in conjunction, preferably in admixture, with the reducing agent(s) at least one colourless photo-oxidizing substance that on exposure to ultraviolet (UV) radiation, such as present in daylight or artificial lighting, yields free radicals capable of inactivating said reducing agent(s) by oxidation, thereby rendering said reducing agent(s) incapable of reducing said organic silver salt to silver.Type: GrantFiled: February 8, 1996Date of Patent: June 10, 1997Assignee: Agfa-Gevaert N.V.Inventors: Luc Leenders, Leo Oelbrandt
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Patent number: 5621448Abstract: A recording method comprising the consecutive steps of:(1) image-wise projecting droplets of liquid, called ink, containing halide ions, onto a receiving material containing at least one substantially light-insensitive silver salt, said ink and/or receiving material containing at least one reducing agent for said silver salt,(2) uniformly photo-exposing said receiving material to form silver nuclei from silver halide obtained in step (1), and(3) heating said receiving material during and/or after said photo-exposure thereby forming a silver image in correspondence with the area wherein said ink has been deposited on said receiving material.Type: GrantFiled: May 18, 1995Date of Patent: April 15, 1997Assignee: AGFA-Gevaert, N.V.Inventors: Leo Oelbrandt, Luc Leenders
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Patent number: 5595854Abstract: A method is disclosed for the formation of a heat mode image comprising the steps of (i) bringing in close contact a donor element, containing a reducing agent and an radiation to heat converting compound, and an acceptor element, containing a reducible organic silver salt, (ii) exposing this assemblage information-wise by intense infra-red laser radiation, (iii) peeling apart the elements and (iiii) optionally overall heating the separated acceptor element.In a preferred embodiment the laser is an infra-red laser and the radiation to heat converting compound is an infra-red absorbing compound.In an alternative embodiment the radiation to heat converting compound is incorporated in the acceptor.Type: GrantFiled: March 8, 1995Date of Patent: January 21, 1997Assignee: Agfa-Gevaert N.V.Inventors: Luc Leenders, Herman Uytterhoeven, Rita Torfs, Leo Oelbrandt, Carlo Uyttendaele, Jan Van den Bogaert