Patents by Inventor Alberto Bracchi

Alberto Bracchi 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).

  • Publication number: 20210280346
    Abstract: A semi-hard magnetic alloy for activation strips in magnetic anti-theft systems is provided. The alloy consists essentially of 5 to 15 wt % Ni, 0.5 to 8 wt % Mn, 0.2 to 4 wt % Cu, 0 to 2 wt % Ai, 0 to 2 wt % Ti, the remainder iron and up to 1 wt % impurities, where 0.5 wt %<(Cu+Al+Ti)<5 wt %.
    Type: Application
    Filed: November 15, 2017
    Publication date: September 9, 2021
    Inventors: Ottmar ROTH, Alberto BRACCHI
  • Patent number: 10818831
    Abstract: A method for producing a thermoelectric object for a thermoelectric conversion device is provided. A starting material which has elements in the ratio of a half-Heusler alloy is melted and then cooled to form at least one ingot. The ingot is homogenized at a temperature of 1000° C. to 1400° C. for a period of time t, wherein 0.5 h?t<12 h or 24 h<t<100 h. The homogenized ingot is crushed and ground into a powder. The powder is cold-pressed and sintered at a maximum pressure of 1 MPa for 0.5 to 24 h at a temperature of 1000° C. to 1500° C.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: October 27, 2020
    Assignee: VACUUMSCHMELZE GMBH & CO. KG
    Inventors: Michael Mueller, Alberto Bracchi, Joachim Gerster
  • Publication number: 20190207073
    Abstract: A thermoelectric article and process for producing a thermoelectric article for a thermoelectric conversion device is provided. The thermoelectric article has an overall composition consisting essentially of 6 atom %?Ti?27 atom %, 6 atom %?Zr?27 atom %, 0 atom %?Hf?1.7 atom %, where 28 atom %?(Ti+Zr+Hf)?38 atom %; 28 atom %?Sn?38 atom %, 0 atom %?Sb?3 atom %, where 28 atom %?(Sn+Sb)?38 atom %; 0 atom %?A?7 atom %, 0 atom %?B?7 atom %, where A is Sc, Y and/or La, B is V, Nb and/or Ta and 0.15 atom %?A+B?7 atom %; the rest being Ni and up to 5 atom % impurities.
    Type: Application
    Filed: June 30, 2017
    Publication date: July 4, 2019
    Applicant: Vacuumschmelze GmbH & Co. KG
    Inventors: Alberto BRACCHI, Michael MÜLLER
  • 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: 9634219
    Abstract: A method for producing a thermoelectric object for a thermoelectric conversion device is provided. A starting material which contains elements in the ratio of a half-Heusler alloy is melted and then cast form an ingot. The ingot is heat-treated for 12 to 24 hours at a temperature of 1000° C. to 1200° C. The homogenised ingot is crushed and ground to provide a powder. The powder is cold-pressed and sintered for 0.5 to 24 hours at a temperature of 1000° C. to 1500° C.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: April 25, 2017
    Assignee: VACUUMSCHMELZE GMBH & CO. KG
    Inventors: Joachim Gerster, Alberto Bracchi, Michael Muller
  • Publication number: 20160254433
    Abstract: A method is provided for producing a thermoelectric object for a thermoelectric conversion device in which a powder having a bulk density ds and elements in the ratio of a Half-Heusler alloy with a theoretical density di is provided. The powder is mechanically compressed and a green body with a tap density dK is formed, the tap density dK being up to 30% of the theoretical density di greater than the bulk density ds of the powder. The green body with the tap density dK is sintered at a temperature of 1000° C. to 1500° C. for 0.5 h to 100 h, a thermoelectric object with a density ds of greater that 95% and preferably 99% of the theoretical density di being produced.
    Type: Application
    Filed: February 25, 2016
    Publication date: September 1, 2016
    Applicant: Vacuumschmelze GmbH & Co. KG
    Inventors: Michael MUELLER, Alberto BRACCHI
  • Publication number: 20160190421
    Abstract: A method for producing a thermoelectric object for a thermoelectric conversion device is provided. A starting material which has elements in the ratio of a half-Heusler alloy is melted and then cooled to form at least one ingot. The ingot is homogenized at a temperature of 1000° C. to 1400° C. for a period of time t, wherein 0.5 h?t<12 h or 24 h<t<100 h. The homogenized ingot is crushed and ground into a powder. The powder is cold-pressed and sintered at a maximum pressure of 1 MPa for 0.5 to 24 h at a temperature of 1000° C. to 1500° C.
    Type: Application
    Filed: October 13, 2015
    Publication date: June 30, 2016
    Applicant: VACUUMSCHMELZE GMBH & CO. KG
    Inventors: Michael MUELLER, Alberto BRACCHI, JOACHIM GERSTER
  • 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
  • Publication number: 20150155463
    Abstract: A thermoelectric module which has at least one thermoelectric element for converting energy between thermal energy and electrical energy. The at least one thermoelectric element has a first surface and a second surface opposite the first surface. The thermoelectric module further has a first electrode, the first electrode having at least a first region which is arranged directly on the first surface and a second electrode, the second electrode having at least a second region which is arranged directly on the second surface. At least one of the first region and the second region has a metal alloy which exhibits an Invar effect.
    Type: Application
    Filed: February 6, 2015
    Publication date: June 4, 2015
    Applicant: VACUUMSCHMELZE GMBH & CO. KG
    Inventors: Joachim GERSTER, Alberto BRACCHI, Michael MULLER
  • Publication number: 20140314610
    Abstract: A method for producing a thermoelectric object for a thermoelectric conversion device is provided. A starting material which contains elements in the ratio of a half-Heusler alloy is melted and then cast form an ingot. The ingot is heat-treated for 12 to 24 hours at a temperature of 1000° C. to 1200° C. The homogenised ingot is crushed and ground to provide a powder. The powder is cold-pressed and sintered for 0.5 to 24 hours at a temperature of 1000° C. to 1500° C.
    Type: Application
    Filed: April 16, 2014
    Publication date: October 23, 2014
    Inventors: Joachim GERSTER, Alberto BRACCHI, Michael MULLER
  • Publication number: 20130037071
    Abstract: A thermoelectric module which has at least one thermoelectric element for converting energy between thermal energy and electrical energy. The at least one thermoelectric element has a first surface and a second surface opposite the first surface. The thermoelectric module further has a first electrode, the first electrode having at least a first region which is arranged directly on the first surface and a second electrode, the second electrode having at least a second region which is arranged directly on the second surface. At least one of the first region and the second region has a metal alloy which exhibits an Invar effect.
    Type: Application
    Filed: August 10, 2012
    Publication date: February 14, 2013
    Applicant: Vacuumschmelze GmbH & Co, KG
    Inventors: Joachim Gerster, Alberto Bracchi, Michael Müller