Patents by Inventor Dieter Nützel

Dieter Nützel 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).

  • Patent number: 11654498
    Abstract: A process for producing an amorphous ductile brazing foil is provided. According to one example embodiment, the method includes providing a molten mass, and rapidly solidifying the molten mass on a moving cooling surface with a cooling speed of more than approximately 105° C./sec to produce an amorphous ductile brazing foil. A process for joining two or more parts is also provided. The process includes inserting a brazing foil between two or more parts to be joined, wherein the parts to be joined have a higher melting temperature than that the brazing foil to form a solder joint and the brazing foil comprises an amorphous, ductile Ni-based brazing foil; heating the solder joint to a temperature above the liquidus temperature of the brazing foil to form a heated solder joint; and cooling the heated solder joint, thereby forming a brazed joint between the parts to be joined.
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: May 23, 2023
    Assignee: VACUUMSCHMELZE GMBH & CO. KG
    Inventors: Thomas Hartmann, Dieter Nuetzel
  • Patent number: 11130187
    Abstract: A process for producing an amorphous ductile brazing foil is provided. According to one example embodiment, the method includes providing a molten mass, and rapidly solidifying the molten mass on a moving cooling surface with a cooling speed of more than approximately 105° C./sec to produce an amorphous ductile brazing foil. A process for joining two or more parts is also provided. The process includes inserting a brazing foil between two or more parts to be joined, wherein the parts to be joined have a higher melting temperature than that the brazing foil to form a solder joint and the brazing foil comprises an amorphous, ductile Ni-based brazing foil; heating the solder joint to a temperature above the liquidus temperature of the brazing foil to form a heated solder joint; and cooling the heated solder joint, thereby forming a brazed joint between the parts to be joined.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: September 28, 2021
    Assignee: VACUUMSCHMELZE GMBH & CO. KG
    Inventors: Thomas Hartmann, Dieter Nuetzel
  • Publication number: 20200298329
    Abstract: A process for producing an amorphous ductile brazing foil is provided. According to one example embodiment, the method includes providing a molten mass, and rapidly solidifying the molten mass on a moving cooling surface with a cooling speed of more than approximately 105° C./sec to produce an amorphous ductile brazing foil. A process for joining two or more parts is also provided. The process includes inserting a brazing foil between two or more parts to be joined, wherein the parts to be joined have a higher melting temperature than that the brazing foil to form a solder joint and the brazing foil comprises an amorphous, ductile Ni-based brazing foil; heating the solder joint to a temperature above the liquidus temperature of the brazing foil to form a heated solder joint; and cooling the heated solder joint, thereby forming a brazed joint between the parts to be joined.
    Type: Application
    Filed: June 5, 2020
    Publication date: September 24, 2020
    Applicant: VACUUMSCHMELZE GMBH & CO. KG
    Inventors: Thomas HARTMANN, Dieter NUETZEL
  • Publication number: 20190061033
    Abstract: A process for producing an amorphous ductile brazing foil is provided. According to one example embodiment, the method includes providing a molten mass, and rapidly solidifying the molten mass on a moving cooling surface with a cooling speed of more than approximately 105° C./sec to produce an amorphous ductile brazing foil. A process for joining two or more parts is also provided. The process includes inserting a brazing foil between two or more parts to be joined, wherein the parts to be joined have a higher melting temperature than that the brazing foil to form a solder joint and the brazing foil comprises an amorphous, ductile Ni-based brazing foil; heating the solder joint to a temperature above the liquidus temperature of the brazing foil to form a heated solder joint; and cooling the heated solder joint, thereby forming a brazed joint between the parts to be joined.
    Type: Application
    Filed: October 30, 2018
    Publication date: February 28, 2019
    Applicant: VACUUMSCHMELZE GMBH & CO. KG
    Inventors: Thomas HARTMANN, Dieter NUETZEL
  • Patent number: 10137517
    Abstract: An amorphous, ductile brazing foil is provided. According to one example embodiment, the composition consists essentially of NirestCraBbPcSid with 2 atomic percent?a?30 atomic percent; 0.5 atomic percent?b?14 atomic percent; 2 atomic percent?c?20 atomic percent; 0 atomic percent?d?14 atomic percent; incidental impurities?0.5 atomic percent; rest Ni, where c>b>c/15 and 10 atomic percent?b+c+d?25 atomic percent.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: November 27, 2018
    Assignee: VACUUMSCHMELZE GMBH & CO KG
    Inventors: Thomas Hartmann, Dieter Nuetzel
  • Publication number: 20180200844
    Abstract: An amorphous ductile brazing foil is provided. The brazing foil has a composition consisting substantially of NiBalCraBb,PcSidMoeXfYg, with 21 atomic %?a?28 atomic %; 0.5 atomic %?b?7 atomic %; 4 atomic %?c?12 atomic %; 2 atomic %?d?10 atomic %; 0 atomic %<e?5 atomic %; 0 atomic %?f?5 atomic %; 0 atomic %?g?20 atomic %; incidental impurities?1.0 atomic %; balance Ni, wherein X is one or more of the elements Nb, Ta, W, Cu, C or Mn and Y is one or both of the elements Fe and Co and a/c?2.
    Type: Application
    Filed: October 3, 2017
    Publication date: July 19, 2018
    Inventors: Thomas HARTMANN, Dieter NÜTZEL, Alberto BRACCHI
  • Patent number: 9757810
    Abstract: Disclosed is an amorphous, ductile brazing foil with a composition consisting essentially of NirestCraBbPcSid with 2 atomic percent?a?30 atomic percent; 0.5 atomic percent?b?14 atomic percent; 2 atomic percent?c?20 atomic percent; 0 atomic percent?d?14 atomic percent; incidental impurities?0.5 atomic percent; rest Ni, where c>b>c/15 and 10 atomic percent?b+c+d?25 atomic percent. Also disclosed is amorphous, ductile Ni-based brazing foil having a composition consisting essentially of NirestCraBbPcSidCeXfYg wherein a, b, c, d, e, f, and g are numbers such that 2 atomic percent?a?30 atomic percent; 0.5 atomic percent?b?14 atomic percent; 2 atomic percent?c?20 atomic percent; 0 atomic percent?d?14 atomic percent; 0 atomic percent?e?5 atomic percent; 0 atomic percent?f?5 atomic percent; 0 atomic percent?g?20 atomic percent; wherein incidental impurities are present, if at all, in amounts?0.
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: September 12, 2017
    Assignee: Vacuumschmelze GmbH & Co. KG
    Inventors: Thomas Hartmann, Dieter Nuetzel
  • Publication number: 20170203394
    Abstract: The invention provides a process for brazing two or three parts. A braze with a composition consisting of NiresCraBbPcSid with 20 atomic percent<a<22 atomic percent; 1.2 atomic percent?b?3.6 percent; 12.5 atomic percent?c?14.5 atomic percent; 0 atomic percent?d<1.5 atomic percent; incidental impurities?0.5 atomic percent; and residual Ni is inserted between two or more parts to be joined to form a joint, the parts to be joined having a higher melting temperature than the braze. The joint is heated to a temperature of between 1020° C. and 1070° C. and cooled to form a brazed joint between the parts.
    Type: Application
    Filed: January 26, 2017
    Publication date: July 20, 2017
    Inventors: Thomas HARTMANN, Dieter NUETZEL
  • Publication number: 20160207130
    Abstract: An amorphous, ductile brazing foil is provided. According to one example embodiment, the composition consists essentially of NirestCraBbPcSid with 2 atomic percent?a?30 atomic percent; 0.5 atomic percent?b?14 atomic percent; 2 atomic percent?c?20 atomic percent; 0 atomic percent?d?14 atomic percent; incidental impurities?0.5 atomic percent; rest Ni, where c>b>c/15 and 10 atomic percent?b+c+d?25 atomic percent.
    Type: Application
    Filed: March 28, 2016
    Publication date: July 21, 2016
    Applicant: Vacuumschmelze GmbH & Co. KG
    Inventors: Thomas HARTMANN, Dieter NUETZEL
  • Publication number: 20150158126
    Abstract: An amorphous, ductile brazing foil which substantially consists of NiBalCraBb,PcSid, wherein 21 atomic %?a?28 atomic %; 0.5 atomic %?b?7 atomic %; 4 atomic %?c?12 atomic %; 2 atomic %?d?10 atomic %; incidental impurities?1.0% by weight; balance Ni, wherein a/c?2, is provided.
    Type: Application
    Filed: March 8, 2012
    Publication date: June 11, 2015
    Inventors: Thomas Hartmann, Dieter Nützel, Alberto Bracchi
  • Patent number: 8951368
    Abstract: Disclosed are amorphous, ductile brazing foils with a composition consisting essentially of FeRestNiaCrbSicBdPe, wherein 0 atomic %?a<25 atomic %; 0 atomic %?b?15 atomic %; 1 atomic %?c?10 atomic %; 4 atomic %?d?15 atomic %; 1 atomic %?e?9 atomic %; any impurities?0.5 atomic %; rest Fe, wherein 2 atomic %?c+e?10 atomic % and 15 atomic %?c+d+e?22 atomic %, or consisting essentially of FeRestNiaCrbMofCugSicBdPe, wherein 0 atomic %?a<25 atomic %; 0 atomic %?b?15 atomic %; 1 atomic %<c?10 atomic %; 4 atomic %?d?15 atomic %; 1 atomic %?e?9 atomic %; 0 atomic %<f?3 atomic %; 0 atomic %?g?3 atomic %; any impurities?0.5 atomic %; rest Fe, wherein 2 atomic %?c+e?10 atomic % and 15 atomic %?c+d+e?22 atomic %. Also disclosed are brazed objects formed using these foils, particularly exhaust gas recirculation coolers and oil coolers, and methods for making the brazing foils and for making the brazed parts.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: February 10, 2015
    Assignee: Vacuumschmelze GmbH & Co. KG
    Inventors: Thomas Hartmann, Dieter Nuetzel
  • Patent number: 8894780
    Abstract: Disclosed are a braze, such as a braze in the form of an amorphous, ductile brazing foil, having a composition consisting essentially of FeaNirestSibBcMd with 5 atomic percent?a?35 atomic percent, 1 atomic percent?b?15 atomic percent, 5 atomic percent<c?15 atomic percent, 0?d?4 atomic percent, rest Ni and incidental impurities, wherein M is one or more of the elements Co, Cr, Mn, Nb, Mo, Ta, Cu, Ag, Pd or C, and having a liquidus temperature TL?1025° C. Also disclosed are apparatus containing parts joined by said braze, methods for using said braze, and methods for making said amorphous, ductile brazing foil.
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: November 25, 2014
    Assignee: Vacuumschmelze GmbH & Co. KG
    Inventors: Dieter Nuetzel, Thomas Hartmann
  • Publication number: 20130333810
    Abstract: An amorphous, ductile brazing foil is produced with a composition of FeaNibCrcSidBeMofPg with 25?a?50 atomic %; 30?b?45 atomic %; 5<c?15 atomic %; 4?d?15 atomic %; 4?e?15 atomic %; 0?f?5 atomic %; 0?g?6 atomic %; and any impurities, wherein 10?d+e+g?28 atomic % with a+b+c+d+e+f+g=100. Excellent brazing joints can be produced with these brazing foils.
    Type: Application
    Filed: February 6, 2013
    Publication date: December 19, 2013
    Applicant: VACUUMSCHMELZE GMBH & CO. KG
    Inventors: Thomas HARTMANN, Dieter Nuetzel
  • Publication number: 20130146184
    Abstract: An amorphous, ductile brazing foil is produced with a composition of FeaNibCrcSidBeMofPg with 25?a?50 atomic %; 30?b?45 atomic %; 5<c?15 atomic %; 4?d?15 atomic %; 4?e?15 atomic %; 0?f?5 atomic %; 0?g?6 atomic %; and any impurities, wherein 10?d+e+g?28 atomic % with a+b+c+d+e+f+g=100. Excellent brazing joints can be produced with these brazing foils.
    Type: Application
    Filed: February 6, 2013
    Publication date: June 13, 2013
    Applicant: VACUUMSCHMELZE GMBH & CO. KG
    Inventors: Thomas HARTMANN, Dieter Nuetzel
  • Patent number: 8372218
    Abstract: Magnet cores pressed using a powder of nanocrystalline or amorphous particles and a pressing additive should be characterized by minimal iron losses. These particles have first surfaces represented by the original strip surfaces and second surfaces represented by surfaces produced in a pulverization process, the overwhelming majority of these second particle surfaces being smooth cut or fracture surfaces without any plastic deformation, the proportion T of areas of plastic deformation of the second particle surfaces being 0?T?0.5.
    Type: Grant
    Filed: June 19, 2007
    Date of Patent: February 12, 2013
    Assignee: Vacuumschmelze GmbH & Co. KG
    Inventors: Dieter Nuetzel, Markus Brunner
  • Publication number: 20120006522
    Abstract: Disclosed are amorphous, ductile brazing foils with a composition consisting essentially of FeRestNiaCrbSicBdPe, wherein 0 atomic %?a<25 atomic %; 0 atomic %?b?15 atomic %; 1 atomic %?c?10 atomic %; 4 atomic %?d?15 atomic %; 1 atomic %?e?9 atomic %; any impurities?0.5 atomic %; rest Fe, wherein 2 atomic %?c+e?10 atomic % and 15 atomic %?c+d+e?22 atomic %, or consisting essentially of FeRestNiaCrbMofCugSicBdPe, wherein 0 atomic %?a<25 atomic %; 0 atomic %?b?15 atomic %; 1 atomic %<c?10 atomic %; 4 atomic %?d?15 atomic %; 1 atomic %?e?9 atomic %; 0 atomic %<f?3 atomic %; 0 atomic %?g?3 atomic %; any impurities?0.5 atomic %; rest Fe, wherein 2 atomic %?c+e?10 atomic % and 15 atomic %?c+d+e?22 atomic %. Also disclosed are brazed objects formed using these foils, particularly exhaust gas recirculation coolers and oil coolers, and methods for making the brazing foils and for making the brazed parts.
    Type: Application
    Filed: September 21, 2011
    Publication date: January 12, 2012
    Applicant: Vacuumschmelze GmbH & Co. KG
    Inventors: Thomas HARTMANN, Dieter Nuetzel
  • Patent number: 8052809
    Abstract: Disclosed are amorphous, ductile brazing foils with a composition consisting essentially of FeRestNiaCrbSicBdPe, wherein 0 atomic %?a<25 atomic %; 0 atomic %?b?15 atomic %; 1 atomic %?c?10 atomic %; 4 atomic %?d?15 atomic %; 1 atomic %?e?9 atomic %; any impurities?0.5 atomic %; rest Fe, wherein 2 atomic %?c+e?10 atomic % and 15 atomic %?c+d+e?22 atomic %, or consisting essentially of FeRestNiaCrbMofCugSicBdPe, wherein 0 atomic %?a<25 atomic %; 0 atomic %?b?15 atomic %; 1 atomic %<c?10 atomic %; 4 atomic %?d?15 atomic %; 1 atomic %?e?9 atomic %; 0 atomic %<f?3 atomic %; 0 atomic %?g?3 atomic %; any impurities?0.5 atomic %; rest Fe, wherein 2 atomic %?c+e?10 atomic % and 15 atomic %?c+d+e?22 atomic %. Also disclosed are brazed objects formed using these foils, particularly exhaust gas recirculation coolers and oil coolers, and methods for making the brazing foils and for making the brazed parts.
    Type: Grant
    Filed: June 3, 2008
    Date of Patent: November 8, 2011
    Assignee: Vacuumschmelze GmbH & Co. KG
    Inventors: Thomas Hartmann, Dieter Nuetzel
  • Publication number: 20110250470
    Abstract: The invention provides a process for brazing two or three parts. A braze with a composition consisting of NiresCraBbPcSid with 20 atomic percent<a<22 atomic percent; 1.2 atomic percent?b?3.6 atomic percent; 12.5 atomic percent?c?14.5 atomic percent; 0 atomic percent?d<1.5 atomic percent; incidental impurities?0.5 atomic percent; and residual Ni is inserted between two or more parts to be joined to form a joint, the parts to be joined having a higher melting temperature than the braze. The joint is heated to a temperature of between 1020° C. and 1070° C. and cooled to form a brazed joint between the parts.
    Type: Application
    Filed: April 8, 2011
    Publication date: October 13, 2011
    Applicant: Vacuumschmelze GmbH & Co. KG
    Inventors: Thomas Hartmann, Dieter Nuetzel
  • Publication number: 20100028716
    Abstract: Brazing alloy with a composition consisting essentially of FeaNiRestCrbMocCudSieBfPg, wherein 0 atomic %<=a<=50 atomic %; 5 atomic %<=b<=18 atomic %; 0.2 atomic %<c<=3 atomic %; 4 atomic %<=e<=15 atomic %; 4 atomic %<=f<=15 atomic %; 0 atomic %<=g<=6 atomic %; rest Ni, and wherein if 0 atomic %<a<=50 atomic %; then 0.5 atomic %<=d<3 atomic % and if a=0, then 0.5 atomic %<=d<=5 atomic %.
    Type: Application
    Filed: August 1, 2007
    Publication date: February 4, 2010
    Inventors: Dieter Nuetzel, Thomas Hartmann
  • Patent number: 7654438
    Abstract: The invention proposes a brazing alloy, which can be produced in particular as a homogenous, ductile, amorphous brazing foil and consists of 2 to 20 atom % of nickel, 2 to 12 atom % of tin, 0.5 to 5.0 atom % of zinc, 6 to 16 atom % of phosphorus, remainder copper and incidental impurities. The total amount of copper, nickel, tin and zinc is between 80 and 95 atom %. The addition of more than 0.5 atom % of zinc produces excellent resistance to surface oxidation in air and/or atmospheric humidity. These brazing alloys can be used to produce excellent brazed joints.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: February 2, 2010
    Assignee: Vacuumschmelze GmbH & Co. KG
    Inventors: Thomas Hartmann, Dieter Nuetzel