Patents by Inventor Witold Pieper
Witold Pieper 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: 10862137Abstract: The invention relates to a method for producing a current collector (1) for a fuel cell. The method comprises the following steps: mixing a power-type or granulate-type base material (2) with a binding agent (3) and with fibres (4) in order to generate a material mixture (5), wherein the fibres (4) have a lower melting point and/or a lower chemical resistance than the base material (2); moulding a moulded body (6) from the material mixture (5); debinding the binding agent (3) from the moulded body (6); removing at least one portion of the fibres (4) from the moulded body (6); and sintering the moulded body (6). The invention also relates to a fuel cell having a current collector (1) that is produced by means of a method according to the invention.Type: GrantFiled: July 12, 2017Date of Patent: December 8, 2020Assignee: Robert Bosch GmbHInventors: Andreas Burghardt, Arne Huber, Daniel Simon, Jens Burghaus, Juergen Oberle, Witold Pieper, Maxim Smirnov
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Publication number: 20200130173Abstract: A robot limb has at least one carbon nanotube wire or conductors with a carbon nanotube-based structure. The wire can function simultaneously as a control cable and a conductor of electrical current.Type: ApplicationFiled: April 27, 2018Publication date: April 30, 2020Inventors: Achim Neubauer, Thilo Koeder, Witold Pieper
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Publication number: 20190237774Abstract: The invention relates to a method for producing a current collector (1) for a fuel cell. The method comprises the following steps: mixing a power-type or granulate-type base material (2) with a binding agent (3) and with fibres (4) in order to generate a material mixture (5), wherein the fibres (4) have a lower melting point and/or a lower chemical resistance than the base material (2); moulding a moulded body (6) from the material mixture (5); debinding the binding agent (3) from the moulded body (6); removing at least one portion of the fibres (4) from the moulded body (6); and sintering the moulded body (6). The invention also relates to a fuel cell having a current collector (1) that is produced by means of a method according to the invention.Type: ApplicationFiled: July 12, 2017Publication date: August 1, 2019Applicant: Robert Bosch GmbHInventors: Andreas BURGHARDT, Arne HUBER, Daniel SIMON, Jens BURGHAUS, Juergen OBERLE, Witold PIEPER, Maxim SMIRNOV
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Patent number: 10294549Abstract: A soft magnetic alloy is provided that consists essentially of 47 weight percent?Co?50 weight percent, 1 weight percent?V?3 weight percent, 0 weight percent?Ni?0.2 weight percent, 0.08 weight percent?Nb?0.12 weight percent, 0 weight percent?C?0.005 weight percent, 0 weight percent?Mn?0.1 weight percent, 0 weight percent?Si?0.1 weight percent, remainder Fe.Type: GrantFiled: June 29, 2012Date of Patent: May 21, 2019Assignee: VACUUMSCHMELZE GMBH & CO. KGInventors: Witold Pieper, Niklas Volbers, Joachim Gerster
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Patent number: 9243304Abstract: A soft magnetic alloy is provided that consists essentially of 47 weight percent?Co?50 weight percent, 1 weight percent?V?3 weight percent, 0 weight percent?Ni?0.25 weight percent, 0 weight percent?C?0.007 weight percent, 0 weight percent?Mn?0.1 weight percent, 0 weight percent?Si?0.1 weight percent, at least one of niobium and tantalum in amounts of x weight percent of niobium, y weight percent of tantalum, remainder Fe. The alloy includes 0 weight percent?x<0.15 weight percent, 0 weight percent?y?0.3 weight percent and 0.14 weight percent?(y+2x)?0.3 weight percent. The soft magnetic alloy has been annealed at a temperature in the range of 730° C. to 880° C. for a time of 1 to 6 hours and comprises a yield strength in the range of 200 MPa to 450 MPa and a coercive field strength of 0.3 A/cm to 1.5 A/cm.Type: GrantFiled: June 29, 2012Date of Patent: January 26, 2016Assignee: VACUUMSCHMELZE GMBH & COMPANY KGInventors: Witold Pieper, Niklas Volbers, Joachim Gerster
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Patent number: 9057115Abstract: A soft magnetic alloy consists essentially of 10 percent by weight?Co?22 percent by weight, 0 percent by weight?V?4 percent by weight, 1.5 percent by weight?Cr?5 percent by weight, 0 percent by weight<Mn<1 percent by weight, 0 percent by weight?Mo?1 percent by weight, 0.5 percent by weight?Si?1.5 percent by weight, 0.1 percent by weight?Al?1.0 percent by weight and the remainder iron, the content of the elements chromium and manganese and molybdenum and aluminum and silicon and vanadium being 4.0 percent by weight?(Cr+Mn+Mo+Al+Si+V)?9.0 percent by weight.Type: GrantFiled: July 24, 2008Date of Patent: June 16, 2015Assignee: Vacuumschmelze GmbH & Co. KGInventors: Witold Pieper, Joachim Gerster
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Patent number: 8943677Abstract: A method for joining core laminations by adhesive force to form a soft-magnetic laminated core by applying a coating that is wettable with epoxy resin to top sides and undersides of each sheet. The sheets are separated into core laminations made of soft-magnetic sheets, which are stacked to form a core lamination stack, and a cured adhesive introduced in a state of low viscosity into interstices between the core laminations. The core lamination stack has intermediate layers between the core laminations. For this purpose, the core laminations comprise a final-annealed, crystalline CoFe alloy, an adhesive-wettable top side and an adhesive-wettable underside. Together with the intermediate layers, the core laminations form a dimensionally accurate laminated core. The laminated core has a substantially adhesive-free contour consisting of contour surfaces of the core laminations. The adhesive is solvent-free in its low-viscosity state.Type: GrantFiled: March 26, 2009Date of Patent: February 3, 2015Assignee: Vacuumschmelze GmbH & Co. KBInventors: Joachim Gerster, Witold Pieper, Harald Staubach, Dominik Fackelmann
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Patent number: 8887376Abstract: The invention relates to a method for the production of a soft magnetic core for generators and generator with a core of this type. To produce a core, a plurality of magnetically activated and/or magnetically activatable textured laminations is produced from a CoFeV alloy. This plurality of laminations is then stacked to form a core assembly. Then the core assembly, if consisting of magnetically activatable laminations, is magnetically activated. Finally, the magnetically activated core assembly is eroded to produce a soft magnetic core. A core of this type is suitable for a generator with a stator and a rotor for high-speed aviation turbines, the laminations in the core assembly being oriented in different texture directions relative to one another.Type: GrantFiled: July 18, 2006Date of Patent: November 18, 2014Assignee: Vacuumschmelze GmbH & Co. KGInventors: Joachim Gerster, Witold Pieper, Rudi Ansmann, Michael Koehler, Michael Von Pyschow
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Patent number: 8405391Abstract: A sensor comprises a magnetic field source, at least one flux conducting soft magnetic element with at least one air gap and at least one magnetic field sensor located in the air gap and measuring a change of the magnetic field of the magnetic field source. The flux conducting soft magnetic element consists of 35% by weight?Ni?50% by weight, 0% by weight?Co?2% by weight, 0% by weight?Mn?1.0% by weight, 0% by weight?Si?0.5% by weight and 0.5% by weight?Cr?8% by weight and/or 0.5% by weight?Mo?8% by weight, wherein (Mo+Cr)?8, rest iron and unavoidable impurities.Type: GrantFiled: March 9, 2010Date of Patent: March 26, 2013Assignee: Vacuumschmelze GmbH & Co. KGInventors: Johannes Tenbrink, Witold Pieper, Burkard Kraus, Joachim Gerster
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Publication number: 20130000794Abstract: A soft magnetic alloy is provided that consists essentially of 47 weight percent ?Co?50 weight percent, 1 weight percent V?3 weight percent, 0 weight percent ?Ni?0.2 weight percent, 0.08 weight percent ?Nb?0.12 weight percent, 0 weight percent ?C?0.005 weight percent, 0 weight percent ?Mn?0.1 weight percent, 0 weight percent ?Si?0.1 weight percent, remainder Fe.Type: ApplicationFiled: June 29, 2012Publication date: January 3, 2013Applicant: Vacuumschmelze GmbH & Co. KGInventors: Witold PIEPER, Niklas VOLBERS, Joachim GERSTER
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Publication number: 20130000797Abstract: A soft magnetic alloy is provided that consists essentially of 47 weight percent?Co?50 weight percent, 1 weight percent?V?3 weight percent, 0 weight percent?Ni?0.25 weight percent, 0 weight percent?C?0.007 weight percent, 0 weight percent?Mn?0.1 weight percent, 0 weight percent?Si?0.1 weight percent, at least one of niobium and tantalum in amounts of x weight percent of niobium, y weight percent of tantalum, remainder Fe. The alloy includes 0 weight percent?x<0.15 weight percent, 0 weight percent?y?0.3 weight percent and 0.14 weight percent?(y+2x)?0.3 weight percent. The soft magnetic alloy has been annealed at a temperature in the range of 730° C. to 880° C. for a time of 1 to 6 hours and comprises a yield strength in the range of 200 MPa to 450 MPa and a coercive field strength of 0.3 A/cm to 1.5 A/cm.Type: ApplicationFiled: June 29, 2012Publication date: January 3, 2013Applicant: Vacuumschmelze GmbH & Co. KGInventors: Witold PIEPER, Niklas VOLBERS, Joachim GERSTER
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Publication number: 20120228966Abstract: An electric motor with a stator and a rotor, the stator and/or the rotor comprising a soft magnetic core comprising a lamination stack, is characterised, in that the lamination stack has a composition of 35% by weight?Ni?50% by weight, 0% by weight?Co?2% by weight, 0% by weight?Mn?1.0% by weight, 0% by weight?Si?0.5% by weight and 0.5% by weight?Cr?8% by weight and/or 0.5% by weight?Mo?8% by weight, residual iron and unavoidable impurities, where 0.5% by weight?(Mo+Cr)?8% by weight.Type: ApplicationFiled: September 9, 2011Publication date: September 13, 2012Applicant: Vacuumschmelze GmbH & Co. KGInventors: Witold Pieper, Burkard Kraus, Johannes Tenbrink
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Publication number: 20120156441Abstract: The invention relates to a laminated core with soft-magnetic material and to a method for joining core laminations by adhesive force to form a soft-magnetic laminated core. The laminated core comprises core laminations made of soft-magnetic sheets, which form a core lamination stack. The core lamination stack has intermediate layers between the core laminations. The intermediate layers comprise a cured adhesive introduced in a state of low viscosity into interstices between the core laminations. For this purpose, the core laminations comprise a final-annealed, crystalline CoFe alloy, an adhesive-wettable top side and an adhesive-wettable underside. Together with the intermediate layers, the core laminations form a dimensionally accurate laminated core. The laminated core has a substantially adhesive-free contour consisting of contour surfaces of the core laminations. The adhesive is solvent-free in its low-viscosity state.Type: ApplicationFiled: March 26, 2009Publication date: June 21, 2012Applicant: Vacuumschmelze GmbH & co. KGInventors: Joachim Gerster, Witold Pieper, Harald Staubach, Dominik Fackelmann
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Patent number: 8012270Abstract: A soft magnetic alloy consists essentially of 5 percent by weight?Co?30 percent by weight, 1 percent by weight?Cr?20 percent by weight, 0.1 percent by weight?Al?2 percent by weight, 0 percent by weight?Si?1.5 percent by weight, 0.017 percent by weight?Mn?0.2 percent by weight, 0.01 percent by weight?S?0.05 percent by weight where Mn/S is >1.7, 0 percent by weight?O?0.0015 percent by weight, und 0.0003 percent by weight?Ce?0.05 percent by weight, 0 percent by weight?Ca?0.005 percent by weight and the remainder iron, where 0.117 percent by weight?(Al+Si+Mn+V+Mo+W+Nb+Ti+Ni)?5 percent by weight.Type: GrantFiled: July 24, 2008Date of Patent: September 6, 2011Assignee: Vacuumschmelze GmbH & Co. KGInventors: Witold Pieper, Joachim Gerster
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Patent number: 7909945Abstract: Disclosed are soft magnetic alloys that consist essentially of 10% by weight ?Co?22% by weight, 0% by weight ?V?4% by weight, 1.5% by weight ?Cr?5% by weight, 1% by weight ?Mn?2% by weight, 0% by weight ?Mo?1% by weight, 0.5% by weight ?Si?1.5% by weight, 0.1% by weight ?Al?1.0% by weight, rest iron. Also disclosed are methods of making the alloys, and products containing them, such as actuator systems, electric motors, and the like.Type: GrantFiled: July 27, 2007Date of Patent: March 22, 2011Assignee: Vacuumschmelze GmbH & Co. KGInventors: Witold Pieper, Joachim Gerster
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Publication number: 20100231204Abstract: A sensor comprises a magnetic field source, at least one flux conducting soft magnetic element with at least one air gap and at least one magnetic field sensor located in the air gap and measuring a change of the magnetic field of the magnetic field source. The flux conducting soft magnetic element consists of 35% by weight?Ni?50% by weight, 0% by weight?Co?2% by weight, 0% by weight?Mn?1.0% by weight, 0% by weight?Si?0.5% by weight and 0.5% by weight?Cr?8% by weight and/or 0.5% by weight?Mo?8% by weight, wherein (Mo+Cr)?8, rest iron and unavoidable impurities.Type: ApplicationFiled: March 9, 2010Publication date: September 16, 2010Applicant: Vacuumschmelze GmbH & Co. KGInventors: Johannes Tenbrink, Witold Pieper, Burkard Kraus, Joachim Gerster
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Publication number: 20090184790Abstract: A soft magnetic alloy consists essentially of 5 percent by weight?Co?30 percent by weight, 1 percent by weight?Cr?20 percent by weight, 0.1 percent by weight?Al?2 percent by weight, 0 percent by weight?Si?1.5 percent by weight, 0.017 percent by weight?Mn?0.2 percent by weight, 0.01 percent by weight?S?0.05 percent by weight where Mn/S is >1.7, 0 percent by weight?O?0.0015 percent by weight, und 0.0003 percent by weight?Ce?0.05 percent by weight, 0 percent by weight?Ca?0.005 percent by weight and the remainder iron, where 0.117 percent by weight?(Al+Si+Mn+V+Mo+W+Nb+Ti+Ni)?5 percent by weight.Type: ApplicationFiled: July 24, 2008Publication date: July 23, 2009Applicant: Vacuumschmelze GmbH & Co. KGInventors: Witold Pieper, Joachim Gerster
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Publication number: 20090145522Abstract: Disclosed are soft magnetic alloys that consist essentially of 10% by weight?Co?22% by weight, 0% by weight?V?4% by weight, 1.5% by weight?Cr?5% by weight, 1% by weight?Mn?2% by weight, 0% by weight?Mo?1% by weight, 0.5% by weight?Si?1.5% by weight, 0.1% by weight?Al?1.0% by weight, rest iron. Also disclosed are methods of making the alloys, and products containing them, such as actuator systems, electric motors, and the like.Type: ApplicationFiled: July 27, 2007Publication date: June 11, 2009Applicant: Vacuumschmelze GmbH & Co. KGInventors: Witold Pieper, Joachim Gerster
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Publication number: 20090039994Abstract: A soft magnetic alloy consists essentially of 10 percent by weight ?Co?22 percent by weight, 0 percent by weight ?V?4 percent by weight, 1.5 percent by weight ?Cr?5 percent by weight, 0 percent by weight <Mn<1 percent by weight, 0 percent by weight ?Mo?1 percent by weight, 0.5 percent by weight ?Si?1.5 percent by weight, 0.1 percent by weight ?Al?1.0 percent by weight and the remainder iron, the content of the elements chromium and manganese and molybdenum and aluminium and silicon and vanadium being 4.0 percent by weight ?(Cr+Mn+Mo+Al+Si+V)?9.0 percent by weight.Type: ApplicationFiled: July 24, 2008Publication date: February 12, 2009Applicant: Vacuumschmelze GmbH & Co. KGInventors: Witold Pieper, Joachim Gerster
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Publication number: 20080099106Abstract: Disclosed are soft magnetic alloys that consist essentially of 10% by weight?Co?22% by weight, 0% by weight?V?4% by weight, 1.5% by weight?Cr?5% by weight, 1% by weight?Mn?2% by weight, 0% by weight?Mo?1% by weight, 0.5% by weight?Si?1.5% by weight, 0.1% by weight?Al?1.0% by weight, rest iron. Also disclosed are methods of making the alloys, and products containing them, such as actuator systems, electric motors, and the like.Type: ApplicationFiled: July 27, 2007Publication date: May 1, 2008Applicant: Vacuumschmelze GmbH & Co. KGInventors: Witold Pieper, Joachim Gerster