Patents by Inventor Roland Scholl
Roland Scholl 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: 11346314Abstract: A method for producing a valve seat ring via powder metallurgy may include compacting a powder mixture including 4% by weight to 16% by weight particles of cobalt to form the valve seat ring. The method may also include sintering the powder mixture after compacting the powder mixture. Before compacting the powder mixture, 80% of the particles of cobalt may have a particle diameter of approximately 4.4 ?m to 17.5 ?m.Type: GrantFiled: October 10, 2018Date of Patent: May 31, 2022Inventors: Heiko Heckendorn, Alexander Mueller, Roland Scholl, Klaus Wintrich
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Patent number: 11154930Abstract: A method for producing a porous shaped body may include providing a mixture of a powder including at least one of a metal, a metal alloy, and a ceramic, with a resin/activator mixture. The method may then include introducing the mixture by core shooting into a cavity formed in a forming tool, and solidifying the mixture in the forming tool to give a shaped body. The method may then include heating the shaped body to remove at least one of organic constituents and gases present in the shaped body. The method may further include resolidifying the shaped body by a sintering operation.Type: GrantFiled: December 8, 2016Date of Patent: October 26, 2021Inventors: Roland Ruch, Roland Scholl, Patrick Sutter, Klaus Wintrich
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Patent number: 10612432Abstract: A tribological system may include a valve seat ring composed of a sintered material and a valve having a surface at least in a seat region that may be at least one of (i) untreated, (ii) hardened, and (iii) plated. The sintered material may be a pressed and sintered powder mixture having a composition that may include (i) 5 to 45 wt % of at least one Fe-based hard phase, (ii) 0 to 2 wt % of each of graphite particles, MnS powder, MoS2 powder, and FeP powder, (iii) 0 to 7 wt % copper powder and 0 to 4 wt % Co powder, (iv) 0.1 to 1.0 wt % of a pressing aid, (v) a high-speed steel having a composition including 14-18 wt % Cr, 1.2-1.9 wt % C, 0.1-0.9 wt % Si, 0.5-2.5 wt % of each of V, W, and Mo, and (vi) a balance of Fe and production-related impurities in quantities of <1.5 wt %.Type: GrantFiled: June 30, 2016Date of Patent: April 7, 2020Assignee: Mahle International GmbHInventors: Heiko Heckendorn, Peter Jaeggi, Roland Ruch, Roland Scholl, Klaus Wintrich
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Patent number: 10272496Abstract: A valve seat ring and a method for producing the same may include a first material and a second material. The first material may be composed of approximately 15 to 30% by weight of Mo, approximately 5 to 30% by weight of chromium, approximately 0 to 5% by weight of Si, approximately 0 to 2% by weight of C, and up to 5% by weight of other elements and a portion of Co. The second material may be composed of approximately 10 to 12% by weight of Cr, approximately 0.5 to 0.8% by weight of Mn, approximately 0.5 to 1% by weight of Si, approximately 0.5 to 0.9% by weight of C, up to approximately 3% by weight of other elements and a reminder of Fe.Type: GrantFiled: June 22, 2016Date of Patent: April 30, 2019Assignee: Mahle International GmbHInventors: Christoph Beerens, Heiko Heckendorn, Roland Scholl, Klaus Wintrich
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Publication number: 20190105714Abstract: A method for producing a valve seat ring via powder metallurgy may include compacting a powder mixture including 4% by weight to 16% by weight particles of cobalt to form the valve seat ring. The method may also include sintering the powder mixture after compacting the powder mixture. Before compacting the powder mixture, 80% of the particles of cobalt may have a particle diameter of approximately 4.4 ?m to 17.5 ?m.Type: ApplicationFiled: October 10, 2018Publication date: April 11, 2019Inventors: Heiko Heckendorn, Alexander Mueller, Roland Scholl, Klaus Wintrich
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Publication number: 20180209311Abstract: A tribological system may include a valve seat ring composed of a sintered material and a valve having a surface at least in a seat region that may be at least one of (i) untreated, (ii) hardened, and (iii) plated. The sintered material may be a pressed and sintered powder mixture having a composition that may include (i) 5 to 45 wt % of at least one Fe-based hard phase, (ii) 0 to 2 wt % of each of graphite particles, MnS powder, MoS2 powder, and FeP powder, (iii) 0 to 7 wt % copper powder and 0 to 4 wt % Co powder, (iv) 0.1 to 1.0 wt % of a pressing aid, (v) a high-speed steel having a composition including 14-18 wt % Cr, 1.2-1.9 wt % C, 0.1-0.9 wt % Si, 0.5-2.5 wt % of each of V, W, and Mo, and (vi) a balance of Fe and production-related impurities in quantities of <1.5 wt %.Type: ApplicationFiled: June 30, 2016Publication date: July 26, 2018Applicant: Mahle International GmbHInventors: Heiko Heckendorn, Peter Jaeggi, Roland Ruch, Roland Scholl, Klaus Wintrich
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Patent number: 9856546Abstract: The invention provides for a cermet powder containing 75-90% by weight of at least one hard material powder, from 10 to 25% by weight of one or more matrix metal powders and up to 3% by weight of at least one modifier, wherein the matrix metal powder or powders contain from 0 to 38% by weight of cobalt, from 0 to 38% by weight of nickel, from 0 to 20% by weight of aluminum, from 0 to 90% by weight of iron and from 10 to 35% by weight of chromium and the sum of the contents of iron and chromium is in the range from 10 to 95% by weight and the sum of the contents of cobalt, nickel and iron is in the range from 65 to 95% by weight. The invention also relates to a cermet and a process to make the cermet containing the cermet powder and shaped article coated with the cermet powder and a process to make the shaped article.Type: GrantFiled: September 21, 2007Date of Patent: January 2, 2018Assignee: H. C. Starck GmbHInventors: Jürgen Fischer, Aloys Eiling, Frank Schrumpf, Stefan Zimmermann, Peter Thienel, Roland Scholl
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Publication number: 20170157672Abstract: A method for producing a porous shaped body may include providing a mixture of a powder including at least one of a metal, a metal alloy, and a ceramic, with a resin/activator mixture. The method may then include introducing the mixture by core shooting into a cavity formed in a forming tool, and solidifying the mixture in the forming tool to give a shaped body. The method may then include heating the shaped body to remove at least one of organic constituents and gases present in the shaped body. The method may further include resolidifying the shaped body by a sintering operation.Type: ApplicationFiled: December 8, 2016Publication date: June 8, 2017Inventors: Roland Ruch, Roland Scholl, Patrick Sutter, Klaus Wintrich
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Publication number: 20160375494Abstract: A valve seat ring and a method for producing the same may include a first material and a second material. The first material may be composed of approximately 15 to 30% by weight of Mo, approximately 5 to 30% by weight of chromium, approximately 0 to 5% by weight of Si, approximately 0 to 2% by weight of C, and up to 5% by weight of other elements and a portion of Co. The second material may be composed of approximately 10 to 12% by weight of Cr, approximately 0.5 to 0.8% by weight of Mn, approximately 0.5 to 1% by weight of Si, approximately 0.5 to 0.9% by weight of C, up to approximately 3% by weight of other elements and a reminder of Fe.Type: ApplicationFiled: June 22, 2016Publication date: December 29, 2016Inventors: Christoph Beerens, Heiko Heckendorn, Roland Scholl, Klaus Wintrich
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Publication number: 20100047622Abstract: The invention provides for a cermet powder containing 75-90% by weight of at least one hard material powder, from 10 to 25% by weight of one or more matrix metal powders and up to 3% by weight of at least one modifier, wherein the matrix metal powder or powders contain from 0 to 38% by weight of cobalt, from 0 to 38% by weight of nickel, from 0 to 20% by weight of aluminum, from 0 to 90% by weight of iron and from 10 to 35% by weight of chromium and the sum of the contents of iron and chromium is in the range from 10 to 95% by weight and the sum of the contents of cobalt, nickel and iron is in the range from 65 to 95% by weight. The invention also relates to a cermet and a process to make the cermet containing the cermet powder and shaped article coated with the cermet powder and a process to make the shaped article.Type: ApplicationFiled: September 21, 2007Publication date: February 25, 2010Applicant: H.C. Starck GmbHInventors: Jürgen Fischer, Aloys Eiling, Frank Schrumpf, Stefan Zimmermann, Peter Thienel, Roland Scholl
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Publication number: 20100003157Abstract: The invention relates to mixtures of metal, alloy or composite powders which have a mean particle diameter D50 of not more than 75 ?m, preferably not more than 25 ?m, and are produced in a process in which a starting powder is firstly deformed to give platelet-like particles and these are then comminuted in the presence of milling aids together with further additives and also the use of these powder mixtures and shaped articles produced therefrom.Type: ApplicationFiled: July 9, 2007Publication date: January 7, 2010Applicant: H.C. Starck GmbHInventors: Roland Scholl, Ulf Waag, Aloys Eiling
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Publication number: 20090277301Abstract: The invention relates to mixtures of metal, alloy or composite powders which have a mean particle diameter D50 of not more than 75 ?m, preferably not more than 25 ?m, and are produced in a process in which a starting powder is firstly deformed to give platelet-like particles and these are then comminuted in the presence of milling aids together with further additives and also the use of these powder mixtures and shaped articles produced therefrom.Type: ApplicationFiled: July 9, 2007Publication date: November 12, 2009Applicant: H.C. Starck GmbHInventors: Roland Scholl, Ulf Waag, Aloys Eiling
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Publication number: 20090252634Abstract: The invention relates to mixtures of metal, alloy or composite powders which have a mean particle diameter D50 of not more than 75 ?m, preferably not more than 25 ?m, and are produced in a process in which a starting powder is firstly deformed to give platelet-like particles and these are then comminuted in the presence of milling aids together with further additives and also the use of these powder mixtures and shaped articles produced therefrom.Type: ApplicationFiled: July 9, 2007Publication date: October 8, 2009Inventors: Roland Scholl, Ulf Waag, Aloys Eiling
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Publication number: 20090123690Abstract: The invention relates to blends of metal, alloy or composite powders having a maximum mean particle diameter D50 of 75, preferably a maximum of 25 ?m, which are produced according to a process in which a base powder is first transformed into flake-like particles and these are then crushed in the presence of milling auxiliary agents, with further additives and also the use of these powder blends and moulded objects produced from them.Type: ApplicationFiled: January 7, 2006Publication date: May 14, 2009Applicant: H.C. Starck GmbHInventors: Roland Scholl, Stefan Zimmermann
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Publication number: 20080087138Abstract: The invention relates to the production of valve metal powders, in particular, tantalum powders by reduction of a corresponding valve metal compound, for example, K2TaF7, with an alkali metal in the presence of a diluent salt, whereby the reduction is carried out in the presence of a particle diminution agent, preferably, Na2SO4, which is added to the reaction mixture continuously or in aliquots.Type: ApplicationFiled: December 9, 2004Publication date: April 17, 2008Applicant: H.C. Starck GmbHInventors: Roland Scholl, Stefan Zimmermann
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Publication number: 20070205102Abstract: Backing plate for sputter targets made of a composite material which comprises 5 to 99 wt. % of at least one refractory metal from the group consisting of Mo, W, Re and Ta and 95 to 1 wt. % of at least one fuirther metallic component from the group consisting of Cu, Ag and Au, process for the production thereof and unit which comprises the backing plate and a sputter target.Type: ApplicationFiled: April 9, 2005Publication date: September 6, 2007Applicant: H. C. Starck GmbH & Co. KGInventors: Roland Scholl, Bernd Meyer, Gerd Passing, Gerhard Wotting
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Patent number: 6501784Abstract: Disclosed is a thermal insulation to be inserted between two structures, surfaces, walls or the walls of components which are to be insulated. The thermal insulation consists of an plurality of hollow spheres made up by loose hollow spheres or by hollow spheres which are interconnected by sintered contacts. The ratio of the outer diameter of the hollow spheres to their wall thickness is 5 300. The hollow spheres are made of silicides, silicide composites, metals and intermetals and the alloys thereof, ceramics or glass. When the walls of the hollow spheres have a closed porous structure, the inner pressure in the hollow spheres is between 0 to 0.1 that of the surrounding air pressure at room temperature.Type: GrantFiled: March 22, 2001Date of Patent: December 31, 2002Assignees: Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V., Nabertherm GmbH & Co. Industrieofenbau KGInventors: Alexander Boehm, Clemens Korhammer, Roland Scholl, Bärbel Voigtsberger, Lothar Schneider, Günther Stephani