Patents by Inventor Ingrid Kratschmer
Ingrid Kratschmer 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: 11795112Abstract: A method for producing the component, and to the use of the component. The method for producing a three-dimensional, ceramic component containing silicon carbide, by a) providing a powdery composition having a grain size (d50) between 3 microns and 500 microns and comprising at least 50 wt % of coke, b) providing a liquid binder, c) depositing a layer of the material provided in a) in a planar manner and locally depositing drops of the material provided in b) onto said layer and repeating step c), the local depositing of the drops in the subsequent repetitions of the step is adapted in accordance with the desired shape of the component to be produced, d) at least partially curing or drying the binder and obtaining a green body having the desired shape of the component, e) carbonising the green body, and f) siliconising the carbonised green body by infiltration with liquid silicon.Type: GrantFiled: November 24, 2016Date of Patent: October 24, 2023Assignee: SGL CARBON SEInventors: Oswin Öttinger, Dominik Rivola, Stefan Klein, Andreas Kienzle, Ingrid Krätschmer
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Publication number: 20180339946Abstract: A method for producing the component, and to the use of the component. The method for producing a three-dimensional, ceramic component containing silicon carbide, by a) providing a powdery composition having a grain size (d50) between 3 microns and 500 microns and comprising at least 50 wt % of coke, b) providing a liquid binder, c) depositing a layer of the material provided in a) in a planar manner and locally depositing drops of the material provided in b) onto said layer and repeating step c), the local depositing of the drops in the subsequent repetitions of the step is adapted in accordance with the desired shape of the component to be produced, d) at least partially curing or drying the binder and obtaining a green body having the desired shape of the component, e) carbonising the green body, and 0 siliconising the carbonised green body by infiltration with liquid silicon.Type: ApplicationFiled: November 24, 2016Publication date: November 29, 2018Applicant: SGL CARBON SEInventors: Oswin ÖTTINGER, Dominik RIVOLA, Stefan KLEIN, Andreas KIENZLE, Ingrid KRÄTSCHMER
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Patent number: 9005732Abstract: A composition comprising polymer-bound fiber tows containing carbon fibers, the polymer-bound fiber tows having an average length of 3 mm to 50 mm measured in the fiber direction, and an average bundle thickness of 0.1 mm to 10 mm measured perpendicular to the fiber direction, and in which at least 75% of all polymer-bound fiber tows have a length that is at least 90% and not greater than 110% of the average length combined with a carbon-ceramic material.Type: GrantFiled: December 7, 2007Date of Patent: April 14, 2015Assignee: Audi AGInventors: Andreas Kienzle, Ingrid Kratschmer
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Patent number: 8906289Abstract: Method for manufacturing a friction disk including preparing a mixture including a carbide-forming element having an average particle size ?2,000 ?m, a resin, optionally a binder, and optionally fine carbon, and/or short carbon fibers; forming the mixture at ? to 280° C. to produce a molded body; heating the molded body to approximately 750° C. to approximately 1300° C. to form a porous carbon body including a carbon residue; heating the porous carbon body to a temperature above the melting point of the carbide-forming element thereby reacting the carbide-forming element with at least a portion of the carbon residue to yield an alveolar structure; infiltrating the alveolar structure with silicon at a temperature above the melting point of silicon thereby filling at least one pore of the alveolar structure with silicon and reacting the silicon with an amount of unreacted carbon residue to form silicon carbide; and obtaining a friction disk.Type: GrantFiled: June 7, 2007Date of Patent: December 9, 2014Assignee: AudiInventors: Andreas Kienzle, Ingrid Krätschmer
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Patent number: 8748009Abstract: The present invention relates to a material including a matrix and at least one reinforcing element introduced therein, wherein the matrix is selected from the group consisting of plastic, carbon, ceramic, glass, clay, metal, and combinations thereof, and the reinforcing element is spherical to ellipsoidal in shape and has an onionskin-like structure. The present invention further relates to a method for producing a material including steps preparing at least one spherical to ellipsoidal reinforcing element having an onionskin-type structure, and introducing the reinforcing element into a matrix, wherein the matrix is selected from the group consisting of plastic, carbon, ceramic, glass, clay, metal, and combinations thereof. The present invention further relates to use of the material in a friction application, as abrasion protection, an injection molding part, a support plate, catalyst substrate or as bone replacement material.Type: GrantFiled: October 5, 2010Date of Patent: June 10, 2014Assignee: SGL Carbon SEInventors: Wilhelm Frohs, Andreas Kienzle, Ingrid Krätschmer
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Patent number: 8668865Abstract: Ceramic materials with a matrix which contains at least one carbide, at least one carbide-forming element and carbon, and which furthermore contain a dispersed phase of carbon particles with spherical shape and an average diameter of 0.2 ?m to 800 ?m, a process for their production and their use for thermal insulation, as a protective layer in ceramic armoring against mechanical action, or as a friction layer in brake disks or clutch disks.Type: GrantFiled: August 20, 2009Date of Patent: March 11, 2014Assignee: Audi AGInventors: Andreas Kienzle, Ingrid Kratschmer
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Patent number: 8357320Abstract: A process for the impregnation of carbon fiber bundles enables the carbon fiber bundles to be impregnated with a curable liquid resin without the impregnated fiber bundles sticking together. The fiber bundles are present in a mechanically generated fluidized bed during the impregnation and are held in the fluidized bed until the resin has been cured or at least dried. A resin-impregnated carbon fiber bundle, a shaped body and an intermediate body for silicization are also provided.Type: GrantFiled: April 11, 2007Date of Patent: January 22, 2013Assignee: SGL Carbon SEInventors: Andreas Kienzle, Ingrid Krätschmer
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Patent number: 8193109Abstract: Ceramic materials with a matrix which contains at least one carbide, at least one carbide-forming element and carbon, and which furthermore contain a dispersed phase of carbon particles with spherical shape and an average diameter of 0.2 ?m to 800 ?m, a process for their production and their use for thermal insulation, as a protective layer in ceramic armoring against mechanical action, or as a friction layer in brake disks or clutch disks.Type: GrantFiled: June 7, 2007Date of Patent: June 5, 2012Assignee: Audi AGInventors: Andreas Kienzle, Ingrid Kratschmer
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Patent number: 8136642Abstract: Carbon-ceramic brake disks that comprise several layers, whereby at least one layer is used as a bearing element and at least one layer acts as a friction layer, whereby the bearing element and at least one friction layer are separated by an intermediate layer, characterized in that the intermediate layer has reinforcement fibers in the form of fiber bundles, whereby the fiber bundles are encased by a layer that consists of a mixture of silicon carbide, silicon and carbon, which can be obtained by heat treatment of a mixture that consists of silicon powder and a carbonized resin or carbonized pitch at a temperature of 900° C. up to 1700° C. in an environment devoid of oxidizing agents. A process for their manufacture and use, in particular in automotive brake systems.Type: GrantFiled: October 31, 2006Date of Patent: March 20, 2012Assignee: Audi, AGInventors: Andreas Kienzle, Ingrid Kratschmer
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Publication number: 20110082033Abstract: The present invention relates to a material including a matrix and at least one reinforcing element introduced therein, wherein the matrix is selected from the group consisting of plastic, carbon, ceramic, glass, clay, metal, and combinations thereof, and the reinforcing element is spherical to ellipsoidal in shape and has an onionskin-like structure. The present invention further relates to a method for producing a material including steps preparing at least one spherical to ellipsoidal reinforcing element having an onionskin-type structure, and introducing the reinforcing element into a matrix, wherein the matrix is selected from the group consisting of plastic, carbon, ceramic, glass, clay, metal, and combinations thereof. The present invention further relates to use of the material in a friction application, as abrasion protection, an injection moulding part, a support plate, catalyst substrate or as bone replacement material.Type: ApplicationFiled: October 5, 2010Publication date: April 7, 2011Inventors: Wilhelm Frohs, Andreas Kienzle, Ingrid Krätschmer
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Publication number: 20090304567Abstract: Ceramic materials with a matrix which contains at least one carbide, at least one carbide-forming element and carbon, and which furthermore contain a dispersed phase of carbon particles with spherical shape and an average diameter of 0.2 ?m to 800 ?m, a process for their production and their use for thermal insulation, as a protective layer in ceramic armoring against mechanical action, or as a friction layer in brake disks or clutch disks.Type: ApplicationFiled: August 20, 2009Publication date: December 10, 2009Inventors: Andreas Kienzle, Ingrid Kratschmer
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Publication number: 20080176067Abstract: A process is provided for producing shaped bodies including carbon fiber reinforced carbon in which the fibers are present in the form of bundles having a defined length, width and thickness. The defined configuration of the fibers in the bundles allows a targeted configuration of the reinforcing fibers in the carbon matrix and thus a structure of the reinforcement which matches the stress of shaped bodies including carbon fiber reinforced carbon, for example brake disks. A shaped body produced according to the invention is also provided.Type: ApplicationFiled: April 11, 2007Publication date: July 24, 2008Inventors: Andreas Kienzle, Ingrid Kratschmer
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Publication number: 20080138578Abstract: A composition comprising polymer-bound fiber tows containing carbon fibers, the polymer-bound fiber tows having an average length of 3 mm to 50 mm measured in the fiber direction, and an average bundle thickness of 0.1 mm to 10 mm measured perpendicular to the fiber direction, and in which at least 75% of all polymer-bound fiber tows have a length that is at least 90% and not greater than 110% of the average length combined with a carbon-ceramic material.Type: ApplicationFiled: December 7, 2007Publication date: June 12, 2008Applicant: Audi AGInventors: Andreas Kienzle, Ingrid Kratschmer
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Publication number: 20080125306Abstract: Ceramic materials with a matrix which contains at least one carbide, at least one carbide-forming element and carbon, and which furthermore contain a dispersed phase of carbon particles with spherical shape and an average diameter of 0.2 ?m to 800 ?m, a process for their production and their use for thermal insulation, as a protective layer in ceramic armoring against mechanical action, or as a friction layer in brake disks or clutch disks.Type: ApplicationFiled: June 7, 2007Publication date: May 29, 2008Applicant: Audi AGInventors: Andreas Kienzle, Ingrid Kratschmer
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Publication number: 20070284773Abstract: Method for manufacturing friction disks with ceramic materials with at least one friction layer, with a matrix containing silicon carbide, silicon and carbon, in the first step a mixture of a fine silicon and/or fine particles of other carbide-forming elements with at least one other component selected from a resin in particulate form and a binder selected from resins, pitches and mixtures of them, being prepared, in the second step, the mixture being deaerated and at an elevated temperature of up to 280° C. being pressed and hardened into a cylindrical or cylindrical annular disk, in the third step the hardened disk being treated by heating to a temperature of approx. 750° C. to approx. 1300° C.Type: ApplicationFiled: June 7, 2007Publication date: December 13, 2007Applicant: Audi AGInventors: Andreas Kienzle, Ingrid Kratschmer
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Publication number: 20070237954Abstract: A process for the impregnation of carbon fiber bundles enables the carbon fiber bundles to be impregnated with a curable liquid resin without the impregnated fiber bundles sticking together. The fiber bundles are present in a mechanically generated fluidized bed during the impregnation and are held in the fluidized bed until the resin has been cured or at least dried. A resin-impregnated carbon fiber bundle, a shaped body and an intermediate body for silicization are also provided.Type: ApplicationFiled: April 11, 2007Publication date: October 11, 2007Inventors: Andreas Kienzle, Ingrid Kratschmer
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Publication number: 20070158150Abstract: Carbon-ceramic brake disks that comprise several layers, whereby at least one layer is used as a bearing element and at least one layer acts as a friction layer, whereby the bearing element and at least one friction layer are separated by an intermediate layer, characterized in that the intermediate layer has reinforcement fibers in the form of fiber bundles, whereby the fiber bundles are encased by a layer that consists of a mixture of silicon carbide, silicon and carbon, which can be obtained by heat treatment of a mixture that consists of silicon powder and a carbonized resin or carbonized pitch at a temperature of 900° C. up to 1700° C. in an environment devoid of oxidizing agents. A process for their manufacture and use, in particular in automotive brake systems.Type: ApplicationFiled: October 31, 2006Publication date: July 12, 2007Applicant: Audi AGInventors: Andreas Kienzle, Ingrid Kratschmer
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Publication number: 20060076699Abstract: A polymer-bonded fiber agglomerate includes short fibers selected from carbon, ceramic materials, glasses, metals and organic polymers, and a polymeric bonding resin selected from synthetic resins and thermoplastics. The fiber agglomerates have an average length, measured in the fiber direction, of from 3 mm to 50 mm and an average thickness, measured perpendicularly to the fiber direction, of from 0.1 mm to 10 mm. At least 75% of all of the contained fibers have a length which is at least 90% and not more than 110% of the fiber agglomerate average length. A fiber-reinforced composite material having the fiber agglomerate and processes for the production thereof are also provided.Type: ApplicationFiled: October 11, 2005Publication date: April 13, 2006Inventors: Peter Domagalski, Alfred Hausler, Ingrid Kratschmer, Andreas Kienzle, Dieter Wustner
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Patent number: 6926127Abstract: Friction members are composed of a ceramic composite material. The friction members can be used for motor vehicles as a clutch disk for friction clutches, for transmitting motive power, or as a brake disk. A friction zone of the friction member is composed of ceramic, in particular of Si and SiC. A core zone of the friction member is made from fiber-reinforced C/SiC, in particular of long fiber woven fabric-reinforced and short fiber-reinforced C/SiC.Type: GrantFiled: November 25, 2002Date of Patent: August 9, 2005Assignee: SGL Carbon AGInventors: Moritz Bauer, Michael Heine, Andreas Kienzle, Ingrid Krätschmer, Rainer Zimmermann-Chopin
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Publication number: 20030106751Abstract: Friction members are composed of a ceramic composite material. The friction members can be used for motor vehicles as a clutch disk for friction clutches, for transmitting motive power, or as a brake disk. A friction zone of the friction member is composed of ceramic, in particular of Si and SiC. A core zone of the friction member is made from fiber-reinforced C/SiC, in particular of long fiber woven fabric-reinforced and short fiber-reinforced C/SiC.Type: ApplicationFiled: November 25, 2002Publication date: June 12, 2003Inventors: Moritz Bauer, Michael Heine, Andreas Kienzle, Ingrid Kratschmer, Rainer Zimmermann-Chopin