Patents by Inventor Frank Schrumpf
Frank Schrumpf 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: 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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Patent number: 8454931Abstract: Process for the production of a powdered spherical tungstic acid by acidification of an aqueous alkaline tungstate solution with mineral acid at elevated temperature, preferably in a continuous stirred tank or a cascade of at least 2 continuous stirred tanks, and tungstic acid obtainable in this way, which is characterized by a high bulk density and spherical morphology.Type: GrantFiled: September 23, 2011Date of Patent: June 4, 2013Assignee: H.C. Starck GmbHInventors: Sven Albrecht, Armin Olbrich, Michael Reiβ, Frank Schrumpf, Juliane Meese-Marktscheffel, Uwe Kutzler
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Patent number: 8449855Abstract: The invention is related to a boride of a metal of transition group four of the periodic table of the elements, wherein at least 40 wt. % of the particles have a grain size of more than 106 ?m, determined by sieve analysis according to ASTM B 214, and these particles consist of grown, monocrystalline grains. The invention also relates to a cermet, wettable powder and a surface coating which contain the boride. The invention further relates to a process to prepare the boride. The invention additionally relates to a process to prepare a cermet or a wettable powder.Type: GrantFiled: February 18, 2011Date of Patent: May 28, 2013Assignee: H.C. Starck GmbH & Co. KGInventors: Frank Schrumpf, Wolfgang Kiliani, Stefan Frässle, Thomas Schmidt
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Patent number: 8440161Abstract: The invention is directed to ammonium paratungstate decahydrate containing at least 75% of crystals having a length of at least 200 ?m and having a ratio of length to width of less than 4.5:1.Type: GrantFiled: May 29, 2012Date of Patent: May 14, 2013Assignee: H. C. Starck GmbHInventors: Viktor Stoller, Michael Erb, Juliane Meese-Marktscheffel, Michael Lohse, Klaus-Jürgen Marschall, Frank Schrumpf
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Publication number: 20130029153Abstract: The invention is directed to ammonium paratungstate decahydrate containing at least 75% of crystals having a length of at least 200 ?m and having a ratio of length to width of less than 4.5:1.Type: ApplicationFiled: May 29, 2012Publication date: January 31, 2013Applicant: H.C. Starck GmbHInventors: Viktor Stoller, Michael Erb, Juliane Meese-Marktscheffel, Michael Lohse, Klaus-Jürgen Marschall, Frank Schrumpf
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Patent number: 8216533Abstract: The invention is directed to a process for the continuous preparation of ammonium paratungstate hydrate by back reextraction of a tungsten-laden organic phase with an ammonia-containing aqueous solution in a mixer-settler apparatus. The reextraction is carried out at an NH3:W molar ratio of from 0.83 to 1.30, and a volume feed ratio of the tungsten-laden organic phase to the ammonia-containing aqueous solution of from 5 to 25. The above crystalline is in high purity and in high yield. The production method can be carried out in a simple and energy-efficient manner.Type: GrantFiled: January 29, 2008Date of Patent: July 10, 2012Assignee: H.C. Starck GmbHInventors: Viktor Stoller, Michael Erb, Juliane Meese-Marktscheffel, Michael Lohse, Klaus-Jürgen Marschall, Frank Schrumpf
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Publication number: 20120045647Abstract: Process for the production of a powdered spherical tungstic acid by acidification of an aqueous alkaline tungstate solution with mineral acid at elevated temperature, preferably in a continuous stirred tank or a cascade of at least 2 continuous stirred tanks, and tungstic acid obtainable in this way, which is characterised by a high bulk density and spherical morphology.Type: ApplicationFiled: September 23, 2011Publication date: February 23, 2012Applicant: H.C. Starck GmbHInventors: Sven Albrecht, Armin Olbrich, Michael Reib, Frank Schrumpf, Juliane Meese-Marktscheffel, Uwe Kutzler
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Patent number: 8052956Abstract: Process for the production of a powdered spherical tungstic acid by acidification of an aqueous alkaline tungstate solution with mineral acid at elevated temperature, preferably in a continuous stirred tank or a cascade of at least 2 continuous stirred tanks, and tungstic acid obtainable in this way, which is characterized by a high bulk density and spherical morphology.Type: GrantFiled: April 28, 2005Date of Patent: November 8, 2011Assignee: H. C. Starck GmbHInventors: Sven Albrecht, Armin Olbrich, Michael Reiss, Frank Schrumpf, Juliane Meese-Marktscheffel, Uwe Kutzler
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Publication number: 20110212330Abstract: The invention is related to a boride of a metal of transition group four of the periodic table of the elements, wherein at least 40 wt. % of the particles have a grain size of more than 106 ?m, determined by sieve analysis according to ASTM B 214, and these particles consist of grown, monocrystalline grains. The invention also relates to a cermet, wettable powder and a surface coating which contain the boride. The invention further relates to a process to prepare the boride. The invention additionally relates to a process to prepare a cermet or a wettable powder.Type: ApplicationFiled: February 18, 2011Publication date: September 1, 2011Applicant: H. C. Starck GmbH & Co. KGInventors: Frank Schrumpf, Wolfgang Kiliani, Stefan Frässle, Thomas Schmidt
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Publication number: 20100098619Abstract: The invention is directed to a process for the continuous preparation of ammonium paratungstate hydrate by back reextraction of a tungsten-laden organic phase with an ammonia-containing aqueous solution in a mixer-settler apparatus. The reextraction is carried out at an NH3:W molar ratio of from 0.83 to 1.30, and a volume feed ratio of the tungsten-laden organic phase to the ammonia-containing aqueous solution of from 5 to 25. The above crystalline is in high purity and in high yield. The production method can be carried out in a simple and energy-efficient manner.Type: ApplicationFiled: January 29, 2008Publication date: April 22, 2010Applicant: H.C. Starck GmbHInventors: Viktor Stoller, Michael Erb, Juliane Meese-Marktscheffel, Michael Lohse, Klaus-Jürgen Marschall, Frank Schrumpf
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Publication number: 20100077887Abstract: The invention is directed to a formulation containing at least one hard material powder and at least 2 binder metal powders. The formulation is characterized in that the cobalt is completely contained in the first binder metal powder and is prealloyed with one or more elements of groups 3 to 8 of the Periodic Table of the Elements which are elements of the fourth period and at least one further binder metal powder from the group consisting of powders of the elements Fe, Ni, Al, Mn, Cr and alloys of these elements with one another is present and the further binder metal powders do not contain any cobalt in unprealloyed form. The invention further relates to the use of the inventive formulation in a cemented hard material, a porous sintered agglomerate and a thermal spray powder. The invention also relates to a method of controlling the toxic effect of cobalt-containing metal formulation by utilizing the inventive formulation.Type: ApplicationFiled: January 25, 2008Publication date: April 1, 2010Applicant: H.C. Starck GmbHInventors: Frank Schrumpf, Benno Gries, Kai-Uwe Clauswitz, Bernd Mende
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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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Patent number: 7563431Abstract: A process for preparing nickel hydroxide by alkaline precipitation from nickel salt solutions in the presence of complexing agents, in which the precipitation is carried out at at least two different locations in the same mother liquor with different precipitation kinetics at the different locations and the mother liquor is mixed prior to agglomeration of the precipitated primary crystals, is described.Type: GrantFiled: June 24, 2002Date of Patent: July 21, 2009Assignee: H. C. Starck GmbHInventors: Armin Olbrich, Juliane Meese-Marktscheffel, Viktor Stoller, Michael Erb, Sven Albrecht, Gerhard Gille, Gerd Maikowske, Frank Schrumpf, Josef Schmoll, Matthias Jahn
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Publication number: 20090018010Abstract: The invention is related to a boride of a metal of transition group four of the periodic table of the elements, wherein at least 40 wt. % of the particles have a grain size of more than 106 ?m, determined by sieve analysis according to ASTM B 214, and these particles consist of grown, monocrystalline grains. The invention also relates to a cermet, wettable powder and a surface coating which contain the boride. The invention further relates to a process to prepare the boride. The invention additionally relates to a process to prepare a cermet or a wettable powder.Type: ApplicationFiled: December 7, 2006Publication date: January 15, 2009Applicant: H.C. Starck GmbH & Co. KGInventors: Frank Schrumpf, Wolfgang Kiliani, Stefan Frassle, Thomas Schmidt
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Publication number: 20070224096Abstract: Process for the production of a powdered spherical tungstic acid by acidification of an aqueous alkaline tungstate solution with mineral acid at elevated temperature, preferably in a continuous stirred tank or a cascade of at least 2 continuous stirred tanks, and tungstic acid obtainable in this way, which is characterised by a high bulk density and spherical morphology.Type: ApplicationFiled: April 28, 2005Publication date: September 27, 2007Applicant: H.C. Starck GmbH & Co. KGInventors: Sven Albrecht, Armin Olbrich, Michael Reib, Frank Schrumpf, Juliane Meese-Marktscheffel, Uwe Kutzler
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Patent number: 7048843Abstract: The invention relates to a method for producing metal hydroxides or alkaline metal carbonates by anode dissolution of the corresponding metals and precipitation of the hydroxides or alkaline carbonates in an aqueous medium. The anode dissolution of the metal components is carried out in the anode compartment of a three-compartment electrolytic cell. An aqueous auxiliary salt solution is fed to an intermediate compartment that is disposed between the anode compartment and the cathode compartment and that is separated therefrom by a porous membrane. An at least not alkaline metal salt solution is continuously taken from the anode compartment while an alkaline auxiliary salt solution is continuously taken from the cathode compartment. The at least not alkaline metal salt solution and the alkaline auxiliary salt solution are combined outside the electrolytic cell for the purpose of precipitating metal hydroxides or alkaline metal carbonates.Type: GrantFiled: June 6, 2001Date of Patent: May 23, 2006Assignee: H.C. Starck GmbHInventors: Armin Olbrich, Astrid Görge, Frank Schrumpf, Juliane Meese-Marktscheffel, Viktor Stoller, Gerhard Gille, Josef Schmoll, Michael Kruft, Dirk Naumann
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Publication number: 20040265217Abstract: A process for preparing nickel hydroxide by alkaline precipitation from nickel salt solutions in the presence of complexing agents, in which the precipitation is carried out at at least two different locations in the same mother liquor with different precipitation kinetics at the different locations and the mother liquor is mixed prior to agglomeration of the precipitated primary crystals, is described.Type: ApplicationFiled: August 20, 2004Publication date: December 30, 2004Inventors: Armin Olbrich, Juliane Meese-Marktscheffel, Viktor Stoller, Michael Erb, Sven Albrecht, Gerhard Gille, Gerd Maikowske, Frank Schrumpf, Josef Schmoll, Matthias Jahn
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Publication number: 20040131530Abstract: The present invention relates to basic cobalt(II) carbonate, agglomerated from fine primary particles and of general composition Co[(OH)2]a[CO3]1-a, where 0.1≦a≦0.9, and to spherodial cobalt(II) hydroxide, to a process for producing them and to their use.Type: ApplicationFiled: December 16, 2003Publication date: July 8, 2004Inventors: Astrid Gorge, Juliane Meese-Marktscheffel, Dirk Naumann, Armin Olbrich, Frank Schrumpf
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Patent number: 6752918Abstract: A process is described for the production of spherical nickel hydroxide by anodic dissolution of a nickel electrode and precipitation of nickel hydroxide in a completely intermixed electrolysis cell, wherein an electrolysis brine is used which has a content of 20 to 50 g/l of chloride ions and 1 to 7 g/l of ammonia with a pH value of 9.5 to 11.5 and a temperature of 45 to 60° C.Type: GrantFiled: November 5, 2001Date of Patent: June 22, 2004Assignee: H. C. Starck GmbHInventors: Armin Olbrich, Viktor Stoller, Juliane Meese-Marktscheffel, Frank Schrumpf, Josef Schmoll, Gerhard Gille
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Patent number: 6699453Abstract: The present invention relates to basic cobalt(II) carbonate, agglomerated from fine primary particles and of general composition Co[(OH)2]a[CO3]1−a, where 0.1≦a≦0.9, and to spheroidal cobalt(II) hydroxide, to a process for producing them and to their use.Type: GrantFiled: November 24, 1997Date of Patent: March 2, 2004Assignee: H.C. Starck GmbH & Co KGInventors: Astrid Görge, Juliane Meese-Marktscheffel, Dirk Naumann, Armin Olbrich, Frank Schrumpf