Patents by Inventor Hakan Holmberg

Hakan Holmberg 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: 10380511
    Abstract: Embodiments of the invention are directed to a fleet management system that assists a fleet, such as a landscaping crew, forestry company, grounds care manager, or the like, with management and monitoring the fleet's collection of outdoor power equipment, like lawn mowers, trimmers, chainsaws, and/or the like, and the operators of the outdoor power equipment. In this regard, embodiments of the invention are directed to systems and methods for automatically gathering data about one or more pieces of outdoor power equipment and one or more human operators of the equipment, processing the data into more useful data and data formats, and providing useful feedback, data, and tools to users of the system to assist with management of one or more fleets.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: August 13, 2019
    Assignee: HUSQVARNA AB
    Inventors: Peter Mejegård, Per Wahlström, Stefan Holmberg, Gary Philpott, Håkan Wahlgren
  • Patent number: 9249368
    Abstract: Disclosed area process and a system for gasifying biomass to obtain a combustible gas for combustion in an engine. Further, a method and a purification system for removing tar components from a combustible gas having a temperature above its dew-point are disclosed.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: February 2, 2016
    Assignee: Meva Innovation AB
    Inventors: Christian Hulteberg, Håkan Holmberg, Torbjörn Wahlberg, Harry Johansson
  • Publication number: 20120304540
    Abstract: Disclosed area process and a system for gasifying biomass to obtain a combustible gas for combustion in an engine. Further, a method and a purification system for removing tar components from a combustible gas having a temperature above its dew-point are disclosed.
    Type: Application
    Filed: November 8, 2010
    Publication date: December 6, 2012
    Applicant: MEVA INNOVATION AB
    Inventors: Christian Hulteberg, Håkan Holmberg, Torbjörn Wahlberg, Harry Johansson
  • Publication number: 20080210344
    Abstract: A precipitation hardenable stainless chromium nickel steel is disclosed having the following composition in weight %: C max 0.07 Si max 1.5 Mn 0.2-5?? S 0.01-0.4? Cr 10-15 Ni ?7-14 Mo 1-6 Cu 1-3 Ti 0.3-2.5 Al 0.2-1.5 N max 0.1 balance Fe and normally occurring impurities.
    Type: Application
    Filed: December 22, 2005
    Publication date: September 4, 2008
    Applicant: SANDVIK INTELLECTUAL PROPERTY AB
    Inventor: Håkan Holmberg
  • Publication number: 20070224439
    Abstract: A coated high strength stainless steel strip product with a dense and evenly distributed metallic layer on one side or both sides of said strip is provided. Said layer consists of essentially pure gold, copper, nickel, cobalt, molybdenum, silver, tin or tungsten or alloys of at least 2 of these metals, the thickness of said layer is preferably maximally 15 ?m, the tolerance of said layer is maximally +/?30% of the layer thickness, the Cr content of the steel strip substrate is at least 10%, and that the layer has such a good adhesion so that the coated steel strip can be uniaxially stretched to fracture by tensile testing without showing any tendency to peeling, flaking or the like. The metal-coated strip product is suitable for use in applications that are load carrying and is able to transfer electrical currents to a contacting surface without an electrical conductivity drop at the interface between the surfaces.
    Type: Application
    Filed: November 3, 2004
    Publication date: September 27, 2007
    Applicant: SANDVIK AB
    Inventor: Hakan Holmberg
  • Publication number: 20070041863
    Abstract: The present invention relates to a stainless steel alloy, more precisely a highstrength stainless, precipitation hardenable, austenitic, stainless alloy, containing a well adjusted amount of aluminium and a high silicon content and which has the following composition (in weight-%): C 0-0.07 Si 0.5-3.0 N 0-0.1 Cr 15.0-20.0 Ni 7.0-12.0 Al 0.25-1.5 Cu 0<Cu<4.0 Mn 0-3.0 Mo 0-2.0 Ti 0-1.0 and the balance Fe together with normally occurring impurities and additives and a product that is reduced by cold working, especially drawing, without intermediate heat treatment, the strength of which increases by final heat treatment at 300° C. to 500° C. by not less than 14%, that shows a Md30-value of between ?55 and ?100, a loss of force that is smaller than 3.0% at 1 N during 24 h and which is very suitable for use in spring applications, such as springs of round wire and strip steel and in medical applications, such as surgical and dental instruments.
    Type: Application
    Filed: July 17, 2006
    Publication date: February 22, 2007
    Inventors: Gustaf Zetterholm, Hakan Holmberg
  • Publication number: 20050126661
    Abstract: The present invention relates to a stainless steel alloy, more precisely a highstrength stainless, precipitation hard-enable, austenitic, stainless alloy, containing a well adjusted amount of aluminium and a high silicon content and which has the following composition (in weight-%): C 0-0.07 Si 0.5-3.0 N 0-0.1 Cr 15.0-20.0 Ni 7.0-12.0 Al 0.25-1.5 Cu 0<Cu<4.0 Mn 0-3.0 Mo 0-2.0 Ti 0-1.0 and the balance Fe together with normally occuring impurities and additives and a product that is reduced by cold working, especially drawing, without intermediate heat treatment, the strength of which increases by final heat treatment at 300° C. to 500 ° C. by not less than 14%, that shows a Md30-value of between ?55 and ?100, a loss of force that is smaller than 3.0% at 1 N during 24 h and which is very suitable for use in spring applications, such as springs of round wire and strip steel and in medical applications, such as surgical and dental instruments.
    Type: Application
    Filed: December 11, 2002
    Publication date: June 16, 2005
    Inventors: Gustaf Zetterholm, Hakan Holmberg
  • Patent number: 5411701
    Abstract: The invention relates to a high strength, vanadium-containing stainless steel alloy in which the amounts of the alloy elements have been balanced such that the austenite phase remains stable without being deformed into martensite even under large reductions. The steel alloy comprises 0.04-0.25 % C, 0.1-2 % Si, 2-15 % Mn, 16-23 % Cr, 8-14 % Ni, 0.10-1.5 % N, 0.1-2.5 % V, the remainder being iron and normal impurities.
    Type: Grant
    Filed: June 7, 1993
    Date of Patent: May 2, 1995
    Assignee: Sandvik AB
    Inventor: Hakan Holmberg
  • Patent number: 5242655
    Abstract: The invention relates to a high strength, vanadium-containing stainless steel alloy in which the amounts of the alloy elements have been balanced such that the austenite phase remains stable without being deformed into martensite even under large reductions. The steel alloy comprises 0.04-0.25% C, 0.1-2% Si, 2-15% Mn, 16-23% Cr, 8-14% Ni, 0.10-1.5% N, 0.1-2.5% V, the remainder being iron and normal impurities.
    Type: Grant
    Filed: June 5, 1992
    Date of Patent: September 7, 1993
    Assignee: Sandvik A.B.
    Inventor: Hakan Holmberg
  • Patent number: 5147475
    Abstract: The invention relates to a high silicon containing stainless steel alloy in which the amounts of the alloy elements have been balanced such that the austenite phase remains stable without being deformed into martensite even under large amounts of working. The steel alloy comprises 0.04-0.25% C, 2.0-5.0% Si, 3.5-7.5% Mn, 16-21% Cr, 8-11% Ni, 0.10-0.45% N, the remainder being iron and normal impurities.
    Type: Grant
    Filed: February 26, 1991
    Date of Patent: September 15, 1992
    Assignee: Sandvik AB
    Inventor: Hakan Holmberg