Patents by Inventor Thomas Helander

Thomas Helander 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).

  • Austenitic Fe—Cr—Ni alloy for high temperature
    Patent number: 10683569
    Abstract: An austenitic alloy for high temperature use, particularly for use in resistance heating elements. The alloy includes primarily the elements Fe, Ni, and Cr, and it has the following main composition, given in weight %, Ni 38-48, Cr 18-24, Si 1.0-1.9, C <0.1, and the balance Fe. The alloy provides good hot form stability, good oxidation resistance, and a relatively high electrical resistance coupled with a low change in resistance as a function of temperature.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: June 16, 2020
    Assignee: Sandvik Intellectual Property AB
    Inventors: Bo Jönsson, Thomas Helander
  • Austenitic FE-CR-NI alloy for high temperature use
    Patent number: 9260770
    Abstract: An austenitic alloy for high temperature use, particularly for use in resistance heating elements. The alloy includes primarily the elements Fe, Ni, and Cr, and it has the following main composition, given in weight %, Ni 38-48, Cr 18-24, Si 1.0-1.9, C<0.1, and the balance Fe. The alloy provides good hot form stability, good oxidation resistance, and a relatively high electrical resistance coupled with a low change in resistance as a function of temperature.
    Type: Grant
    Filed: December 13, 2010
    Date of Patent: February 16, 2016
    Assignee: Sandvik Intellectual Property AB
    Inventors: Bo Jönsson, Thomas Helander
  • Aluminium Oxide Forming Nickel Based Alloy
    Publication number: 20150275334
    Abstract: Nickel based alloy intended for use at high temperatures wherein it comprises in percent by weight (wt-%) C 0.05-0.2, Si max 1.5, Mn max 0.5, Cr 15-20, Al 4-6, Fe 15-25, Co max 10, N 0.03-0.15, O max 0.5, one or more elements selected from the group consisting of Ta, Zr, Hf, Ti and Nb 0.25-2.2, one or more elements selected from the group consisting of REM max 0.5, balance Ni, and normally occurring impurities.
    Type: Application
    Filed: June 9, 2015
    Publication date: October 1, 2015
    Applicant: Sandvik Intellectual Property AB
    Inventors: Thomas Helander, Mats Lundberg, Bo Jönsson
  • Use and method of producing a dispersion strengthened steel as material in a roller for a roller hearth furnace
    Patent number: 8597438
    Abstract: A roller for a roller hearth furnace comprising a dispersion strengthened steel is disclosed. The roller does not require any coating or reconditioning.
    Type: Grant
    Filed: October 5, 2007
    Date of Patent: December 3, 2013
    Assignee: Sandvik Intellectual Property AB
    Inventors: Dilip Chandrasekaran, Thomas Helander, Thomas Lewin, Thomas Odelstam, Jan Innerman
  • ALUMINIUM OXIDE FORMING NICKEL BASED ALLOY
    Publication number: 20110250463
    Abstract: Nickel based alloy intended for use at high temperatures wherein it comprises in percent by weight (wt-%) C 0.05-0.2 Si max 1.5 Mn max 0.5 Cr 15-20 Al 4-6 Fe 15-25 Co max 10 N 0.03-0.15 O max 0.5 one or more elements selected from the group consisting of Ta, Zr, Hf, Ti and Nb 0.25-2.2 one or more elements selected from the group consisting of REM max 0.5 balance Ni and normally occurring impurities.
    Type: Application
    Filed: November 6, 2009
    Publication date: October 13, 2011
    Applicant: Sandvik Intellectual Property AB
    Inventors: Thomas Helander, Mats Lundberg, Bo Jönsson
  • Austenitic FE-CR-NI alloy for high temperature use
    Publication number: 20110147368
    Abstract: An austenitic alloy for high temperature use, particularly for use in resistance heating elements. The alloy includes primarily the elements Fe, Ni, and Cr, and it has the following main composition, given in weight %, Ni 38-48, Cr 18-24, Si 1.0-1.9, C<0.1, and the balance Fe. The alloy provides good hot form stability, good oxidation resistance, and a relatively high electrical resistance coupled with a low change in resistance as a function of temperature.
    Type: Application
    Filed: December 13, 2010
    Publication date: June 23, 2011
    Applicant: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Bo Jönsson, Thomas Helander
  • THE USE AND METHOD OF PRODUCING A DISPERSION STRENGTHENED STEEL AS MATERIAL IN A ROLLER FOR A ROLLER HEARTH FURNACE
    Publication number: 20100289194
    Abstract: A roller for a roller hearth furnace comprising a dispersion strengthened steel is disclosed. The roller does not require any coating or reconditioning.
    Type: Application
    Filed: October 5, 2007
    Publication date: November 18, 2010
    Applicant: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Dilip Chandrasekaran, Thomas Helander, Thomas Lewin, Thomas Odelstam, Jan Innerman
  • Austenitic fe-cr-ni alloy for high temperature use
    Publication number: 20070081917
    Abstract: An austenitic alloy for high temperature use, particularly for use in resistance heating elements. The alloy includes primarily the elements Fe, Ni, and Cr, and it has the following main composition, given in weight %, Ni 38-48, Cr 18-24, Si 1.0-1.9, C<0.1, and the balance Fe. The alloy provides good hot form stability, good oxidation resistance, and a relatively high electrical resistance coupled with a low change in resistance as a function of temperature.
    Type: Application
    Filed: September 8, 2004
    Publication date: April 12, 2007
    Applicant: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Bo Jönsson, Thomas Helander