Patents by Inventor Lars-Göran Johansson

Lars-Göran Johansson 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).

  • Furnace Insulation
    Publication number: 20080196641
    Abstract: Furnace insulation comprising fibre modules in the form of at least two cylinder segments (2, 3; 7, 8) that are placed against one another so as to form a cylinder whose internal volume constitutes the furnace space and that are adapted to allow an electrical resistance element (5) to lie against and be fastened in the inner surface (4) of the cylinder. The present invention is characterized in that the inner part of the cylinder includes one or more radially extending or generally radially extending openings (12; 14).
    Type: Application
    Filed: August 31, 2005
    Publication date: August 21, 2008
    Applicant: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Lars Göran Johansson, Lars-Henrik Eklund
  • Molybdenum silicide type element
    Patent number: 7378621
    Abstract: The present invention relates to an electrical resistance element of the molybdenum silicide type that includes two terminals (1, 2) for the supply of electric current and at least one leg (3) which extends between the terminals and which includes a glow zone. The invention is characterized in that the glow zone has different diameters along different sections (6-11, 14-17) of the leg (3; 4, 5).
    Type: Grant
    Filed: February 20, 2003
    Date of Patent: May 27, 2008
    Assignee: Sandvik Intellectual Property AB
    Inventor: Lars Göran Johansson
  • Arrangement for fastening heating elements to a furnace
    Patent number: 7012947
    Abstract: The invention relates to an arrangement for mounting electric heating elements in a furnace in which objects are intended to be heated, wherein the furnace wall includes a furnace insulation (4) comprised of high grade brick, and wherein the heating zones (6) of respective electric heating elements (2) are placed vertically and parallel with the inner surface of the furnace wall in operation.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: March 14, 2006
    Assignee: Sandvik AB
    Inventor: Lars-Göran Johansson
  • IR-source with helically shaped heating element
    Patent number: 6308008
    Abstract: An infrared radiation lamp that includes an electrically heated filament and a reflector. The filament is a high temperature element that is wound to a helical configuration. The helical filament is free-standing at operating temperatures, and it is positioned in an open reflector made from a ceramic material.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: October 23, 2001
    Assignee: Kanthal AB
    Inventors: Lars-Göran Johansson, Jan Andersson
  • Heating element
    Patent number: D449375
    Type: Grant
    Filed: August 18, 2000
    Date of Patent: October 16, 2001
    Assignee: Kanthal AB
    Inventors: Jan Andersson, Helena Johansson, Lars-Göran Johansson, Mats Sundberg
  • Heating element
    Patent number: D452560
    Type: Grant
    Filed: August 18, 2000
    Date of Patent: December 25, 2001
    Assignee: Kanthal AB
    Inventors: Jan Andersson, Helena Johansson, Lars-Göran Johansson, Mats Sundberg
  • Heating element
    Patent number: D452561
    Type: Grant
    Filed: August 18, 2000
    Date of Patent: December 25, 2001
    Assignee: Kanthal AB
    Inventors: Jan Andersson, Helena Johansson, Lars-Göran Johansson, Mats Sundberg