Patents by Inventor Konrad Wissenbach
Konrad Wissenbach 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: 9556525Abstract: The present invention relates to a method of producing a (shaped) ceramic or glass-ceramic article, involving the steps of: (a) providing a powder or a powder mixture comprising ceramic or glass-ceramic material, (b) depositing a layer of said powder or powder mixture on a surface, (d) heating at least one region of said layer by means of an energy beam or a plurality of energy beams to a maximum temperature such that at least a part of said ceramic or glass-ceramic material in said at least one region is melted and (e) cooling said at least one region of said layer so that at least part of the material melted in step (d) is solidified, such that the layer is joined with said surface in said at least one region. The invention also relates to ceramic or glass-ceramic articles and their use.Type: GrantFiled: August 10, 2010Date of Patent: January 31, 2017Assignees: BEGO BREMER GOLDSCHLAEGEREI WILH, HERBST GMBH & CO. KG, NEDERLANDSE ORGANISATIE VOOR TOEGEPAST NATUURWETENSCHAPPELIJK ONDERZOEK TNO INNALOX BV, FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNGE E.V.Inventors: Stephan Dierkes, Anne Jans Faber, Jan Wilkes, Mark P. M. Welters, Wilhelm Meiners, Konrad Wissenbach
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Patent number: 8809192Abstract: A method for deposition of at least one electrically conducting film on a substrate, wherein the method includes the steps of: selecting a layer of a film material, wherein the layer includes a mask on a front side, and wherein the layer and the mask are one piece; positioning the front side of the layer upon the substrate; applying at least one laser pulse onto a back side of the layer, so as to melt and to vaporize at least parts of the layer such that melt droplets are propelled toward and deposited upon the substrate; and forming the film, wherein at least one slot of the mask limits the distribution of the melt droplets.Type: GrantFiled: January 11, 2010Date of Patent: August 19, 2014Assignee: Koninklijke Philips N.V.Inventors: Dietrich Bertram, Jochen Hugo Stollenwerk, Johannes Krijne, Holger Schwab, Edward Willem Albert Young, Jeroen Henri Antoine Maria Van Buul, Andres Gasser, Konrad Wissenbach, Christian Vedder, Norbert Pirch
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Publication number: 20120237745Abstract: The present invention relates to a method of producing a (shaped) ceramic or glass-ceramic article, involving the steps of: (a) providing a powder or a powder mixture comprising ceramic or glass-ceramic material, (b) depositing a layer of said powder or powder mixture on a surface, (d) heating at least one region of said layer by means of an energy beam or a plurality of energy beams to a maximum temperature such that at least a part of said ceramic or glass-ceramic material in said at least one region is melted and (e) cooling said at least one region of said layer so that at least part of the material melted in step (d) is solidified, such that the layer is joined with said surface in said at least one region. The invention also relates to ceramic or glass-ceramic articles and their use.Type: ApplicationFiled: August 10, 2010Publication date: September 20, 2012Applicants: Frauhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V., Innalox BV, Nederlandse Organisatie Voor Toegepast Natuurwetenschappelijk Onderzoek Tno, Bego Bremer Goldschagerei Wilh Herbst GmbH & Co KGInventors: Stephan Dierkes, Anne Jans Faber, Jan Wilkes, Mark P.M. Welters, Wilhelm Meiners, Konrad Wissenbach
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Publication number: 20110318924Abstract: The invention relates to a method for deposition of at least one electrically conducting film (20) on a substrate (30), comprising the steps: selecting a layer (10) of a film material, wherein the layer (10) comprises a mask (40) on a front side (11) and wherein the layer (10) and the mask (40) are one piece, positioning the front side (11) of the layer (10) upon the substrate (30), applying at least one laser pulse (120) onto a back side (12) of the layer (10), so as to melt and to vaporize at least parts of the layer (10) such that melt droplets (110) are propelled toward and deposited upon said substrate (30), forming the film (20), wherein at least one slot (45) of the mask (40) limits the distribution of said melt droplets (110).Type: ApplicationFiled: January 11, 2010Publication date: December 29, 2011Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Dietrich Bertram, Jochen Stollenwerk, Johannes Krijne, Holger Schwab, Edward W. A. Young, Jeroen H. A. M. Van Buul, Andres Gasser, Konrad Wissenbach, Christian Vedder, Norbert Pirch
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Patent number: 7592563Abstract: The present invention relates to a method for smoothing and polishing surfaces by treating them with energetic radiation, in particular laser radiation, in which the to-be-smoothed surface is remelted in a first treatment step using said energetic radiation and employing first treatment parameters at least once down to a first remelting depth of approx. 5 to 100 ?m, which is greater than a structural depth of the to-be-smoothed structures of said to-be-smoothed surface, wherein continuous radiation or pulsed radiation with a pulse duration of ?100 ?s is employed. The method makes it possible to automatically polish any three-dimensional surface fast and cost effective.Type: GrantFiled: June 24, 2003Date of Patent: September 22, 2009Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Konrad Wissenbach, Edgar Willenborg, Norbert Pirch
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Publication number: 20060081573Abstract: The present invention relates to a method for smoothing and polishing surfaces by treating them with energetic radiation, in particular laser radiation, in which the to-be-smoothed surface (1) is remelted in a first treatment step using said energetic radiation (3) and employing first treatment parameters at least once down to a first remelting depth (10) of approx. 5 to 100 ?m, which is greater than a structural depth of the to-be-smoothed structures of said to-be-smoothed surface (1), wherein continuous radiation or pulsed radiation (3) with a pulse duration of ?100 ?s is employed. The method makes it possible to automatically polisch any three-dimensional surface fast and cost effective.Type: ApplicationFiled: June 24, 2003Publication date: April 20, 2006Applicant: Fraunhofer-Gesellschaft zur Foderung der angewandten Forschung e.V.Inventors: Konrad Wissenbach, Edgar Willenborg, Norbert Pirch
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Patent number: 6861613Abstract: The present invention relates to a generative method of fabrication and an accompanying device with which components can be fabricated from a combination of materials. The device comprises a bottom surface (1) with a lowerable building platform (2), a leveling mechanism (5) for leveling a first material (4) in a processing plane (3) above the building platform (2), a laser beam source for emitting a laser beam (11), a processing unit (6) with a focusing optical system (8) for focusing the laser beam (11) onto the processing plane (3) and a positioning mechanism which can position the processing unit (6) in any desired positions in a plane parallel to the processing plane (3) above the component (14). Furthermore, the device is provided with a suction device (10) for sectioning off the material from the processing plane (3) and an introduction mechanism (9) for a second material (12) with which the latter is brought into the focal range of the laser beam (11).Type: GrantFiled: June 26, 2000Date of Patent: March 1, 2005Assignee: Fraunhofer Gesellschaft zur Forderung der angewandten Forschung e.V.Inventors: Wilhelm Meiners, Andres Gasser, Konrad Wissenbach
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Publication number: 20040056022Abstract: The present invention relates to a device and a method for the selective laser sintering of metallic substances. The construction volume of the device is delimited by side walls (2) and by a construction platform (3), which is adjustable in height, for building up a component (9). A heating plate (5) is placed on the construction platform (3) at a distance from the side walls (2) or is integrated in the surface of the construction platform (3). The heating plate (5) is designed and thermally insulated from the construction platform (3) by an insulation layer (4) in such a manner that it reaches temperatures of at least 500° C. during heating operation. With the device and the corresponding method, metallic components are maintained at temperatures above 500° C. during the building up process thereby reducing the danger of tensions or cracking in the component.Type: ApplicationFiled: August 4, 2003Publication date: March 25, 2004Inventors: Wilhelm Meiners, Konrad Wissenbach, Christoph Over
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Patent number: 6583379Abstract: The invention relates to a process chamber for the selective laser fusion of material powder for the production of moulded parts. The process chamber consists of a closed chamber (1) having a bottom area, side walls and a cover area (6), a reservoir volume (3) and a production volume (2) in said bottom area, and first inlet and outlet openings (7, 9) for a protective gas. In the cover area (6), above the production volume (2), a raised region is provided with side areas, in which a beam injection window (10) is disposed that is transparent to laser radiation to be coupled in. Second inlet openings (13) are provided for a further gas in the side areas of the raised region. With the inventive design of the process chamber it is possible to protect the beam injection window (10) efficiently from being soiled by gaseous components rising from the zone of interaction, without impairment of the efficiency in guiding the protective gas.Type: GrantFiled: August 2, 2001Date of Patent: June 24, 2003Assignee: Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung E.V.Inventors: Wilhelm Meiners, Konrad Wissenbach, Andres Gasser
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Patent number: 6534740Abstract: The present invention relates to a device and a process using a laser beam to scan an area of an object, in particular, for selective laser melting of metal powder for fabrication of a mold. The device is provided with a plotter mechanic with two linear axes (4, 5) over which a carrier element can be positioned and moved, an optical means, which guides the laser beam to the carrier element or provides the laser beam at the carrier element, a scanning means (9) at the carrier element, which guides the laser beam to the area of the object and moves the laser beam back and forth in a presetable angle, a focusing optic (15) for focusing the laser beam (8) onto the area of the object (11).Type: GrantFiled: February 8, 2001Date of Patent: March 18, 2003Assignee: Fraunhofer Gesellschaft zur Förderung der angewandten Forschung e.V.Inventors: Wilhelm Meiners, Konrad Wissenbach, Andres Gasser
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Patent number: 6251328Abstract: A multiplicity of laser diodes aim laser light directly onto the surface of a workpiece and are disposed over and according to the to-be-shaped contour of a workpiece, so that a detector unit for determining the spatial shaping of the workpiece and an evaluation and control unit can determine process parameters for further illumination in dependence on a comparison of an actual state of shaping and a desired state of shaping of the workpiece.Type: GrantFiled: July 8, 1998Date of Patent: June 26, 2001Assignee: Fraunhofer-Gesellshcaft zur Foerderung der angewandten Forschung e.V.Inventors: Eckhard Beyer, Volker Krause, Frank Kuepper, Hans-Georg Treusch, Konrad Wissenbach
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Patent number: 6215093Abstract: A method is disclosed for manufacturing a molded body, in accordance with three-dimensional CAD data of a model of a molded body, by depositing layers of a metallic material in powder form. Several layers of powder are successively deposited one on top of the other, whereby each layer of powder is heated to a specific temperature by means of a focused laser beam applied to a given area corresponding to a selected cross-sectional area of the model of the molded body, before deposition of the next layer. The laser beam is guided over each layer of powder in accordance with the CAD cross-sectional data of the selected cross-sectional area of the model in such a way that each layer of powder is fixed to the layer below it.Type: GrantFiled: July 12, 1999Date of Patent: April 10, 2001Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.Inventors: Wilhelm Meiners, Konrad Wissenbach, Andres Gasser
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Patent number: 6114651Abstract: A laser beam apparatus for the removal of surface layers from work pieces with a beam-emitting head that may be guided by hand and that is equipped with focusing optics, which is connected to laser apparatus that generates a laser beam so as to admit light, which exhibits a beam-deflecting direction that moves on a pre-determined pathway in an oscillating manner, which covers the laser beam radially with a point and releases it through an emission opening that faces the work piece, and which has a distance retainer that permits the adjustment of the distance of the beam-emitting head from the work piece.Type: GrantFiled: November 26, 1997Date of Patent: September 5, 2000Assignee: Frauenhofer Society for the Promotion of Applied ResearchInventors: Holger Schluter, Axel Zwick, Konrad Wissenbach, Edwin Buchter, Frank Reichel, Winfried Barkhausen
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Patent number: 5902420Abstract: In order to harden the surface of workpieces having complex shapes without reviously applying absorption promoting surface layers, a mixture of inert gas and oxygen are supplied to the processing zone while the workpiece is exposed to laser radiation. The degree of absorption is maximized by adjusting at least one of the mixing ratio, the volume flow rate, and the processing temperature to conform to a nominal value.Type: GrantFiled: October 17, 1997Date of Patent: May 11, 1999Assignee: Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.Inventors: Konrad Wissenbach, Ralf Jung, Frank Kupper, Gilbert Vitr
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Patent number: 5886313Abstract: A device for plating two or more metal plates, strips, etc., by the absoron of laser energy. The device is fitted with beam-forming optics which form the laser radiation into a beam with a rectangular cross-section. The radiation source is a laser-diode array in which several laser diodes are disposed next to each other in the same plane to give bars which can be laid next to each other, as well as stacked one on top of each other, in any numbers. In order to homogenize the laser radiation produced by the array to give a rectangular cross-section, the device proposed is fitted with special optics such as a prism which converges in the shape of a wedge, a glass plate, with a rectangular cross-section, reflective boundary drives, etc. The rectangular cross-section beam heats the two surfaces of the metal plates being plated only locally, over limited areas and to small depths, to the plastic state.Type: GrantFiled: June 5, 1997Date of Patent: March 23, 1999Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Volker Krause, Konrad Wissenbach, Eckhard Beyer, Hans-Georg Treusch, Gilbert Vitr
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Patent number: 5705788Abstract: The invention relates to a process for material treatment with diode radiation, especially laser diode radiation. To match the radiation profile to the treatment process, the process is so carried out that radiation emitted from a multiplicity of diodes is directed with a predetermined radiation profile upon the treated region of the workpiece and that a change in the intensity distribution in the radiation profile is effected by controlling the diode output power.Type: GrantFiled: November 17, 1995Date of Patent: January 6, 1998Assignee: Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung E.V.Inventors: Eckhard Beyer, Konrad Wissenbach, Volker Krause