Patents by Inventor Per-Olof Larsson

Per-Olof Larsson 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: 20220041449
    Abstract: The present invention relates to a method of producing an iron containing compound, iron containing precursor, or iron containing aqueous solution comprising the steps of: providing direct reduced iron; dissolving the direct reduced iron in organic and/or inorganic acids to provide an iron containing aqueous solution, wherein insoluble impurities of the direct reduced iron are maintained in solid form throughout the dissolution process, to obtain an iron containing aqueous solution with suspended insoluble impurities; separating the said insoluble impurities from the iron containing aqueous solution obtaining a purified iron containing aqueous solution; and optionally solidifying said purified iron containing aqueous solution to provide the iron containing compound or iron containing precursor, by drying. The present invention further relates to iron containing compounds, iron containing precursors, and iron containing aqueous solutions, and their use in battery components.
    Type: Application
    Filed: December 3, 2019
    Publication date: February 10, 2022
    Applicant: Höganäs AB (Publ)
    Inventors: Per-Olof LARSSON, Björn SKÅRMAN, Hilmar VIDARSSON
  • Patent number: 9816164
    Abstract: An iron-boron alloy powder or an iron-boron alloy powder composition suitable for remediation of halogenated hydrocarbon polluted soil, water or groundwater as well as the use of the powder or powder composition. The boron-iron alloy powder suitable for remediation of polluted soil or waters may have 0.1-40% by weight of boron and inevitable impurities up to a content of 10% by weight. Further, a method for remediation of halogenated hydrocarbon polluted soil, water or groundwater.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: November 14, 2017
    Assignee: HÖGANÄS AB (PUBL)
    Inventors: Per-Olof Larsson, Sigurd Berg, Hilmar Vidarsson, Leen Bastiaens, Milica Limirovic
  • Publication number: 20150232967
    Abstract: An iron-boron alloy powder or an iron-boron alloy powder composition suitable for remediation of halogenated hydrocarbon polluted soil, water or groundwater as well as the use of the powder or powder composition. The boron-iron alloy powder suitable for remediation of polluted soil or waters may have 0.1-40% by weight of boron and inevitable impurities up to a content of 10% by weight. Further, a method for remediation of halogenated hydrocarbon polluted soil, water or groundwater.
    Type: Application
    Filed: September 18, 2013
    Publication date: August 20, 2015
    Applicant: HOGANAS AB (PUBL)
    Inventors: Per-Olof Larsson, Sigurd Berg, Hilmar Vidarsson, Leen Bastiaens, Milica Velimirovic
  • Patent number: 8337761
    Abstract: A particulate filtration device includes a filter with a feed inlet side for a feed gas and an filtrate outlet for a filtrate, feed gas channels and filtrate channels, and one or more diaphragms between the feed inlet side and the filtrate outlet. Opposite to the feed inlet side a particulate outlet is arranged with a collector compartment attached to the particulate outlet for collecting particulates retained in the feed gas channels.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: December 25, 2012
    Assignees: Volvo Technology Corp., Höganäs AB
    Inventors: Lennart Andersson, Jonas Edvardsson, Edward Jobson, Heije Westberg, Per-Olof Larsson, Owe Mars, Jörgen Knuth-Nielsen
  • Patent number: 7993429
    Abstract: An iron-based powder metallurgical composition is provided comprising an iron or iron-based powder and a particulate composite lubricant, the composite lubricant comprising particles having a core comprising a solid organic lubricant having fine carbon particles adhered thereon. A particulate composite lubricant and a method for producing the same also are provided.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: August 9, 2011
    Assignee: Höganäs AB (PUBL)
    Inventors: Åsa Ahlin, Anna Ahlquist, Per-Olof Larsson, Naghi Solimnjad
  • Publication number: 20110027136
    Abstract: A particulate filtration device includes a filter with a feed inlet side for a feed gas and an filtrate outlet for a filtrate, feed gas channels and filtrate channels, and one or more diaphragms between the feed inlet side and the filtrate outlet. Opposite to the feed inlet side a particulate outlet is arranged with a collector compartment attached to the particulate outlet for collecting particulates retained in the feed gas channels.
    Type: Application
    Filed: December 21, 2007
    Publication date: February 3, 2011
    Inventors: Lennart Andersson, Jonas Edvardsson, Edward Jobson, Heije Westberg, Per-Olof Larsson, Owe Mars, Jörgen Knuth-Nielsen
  • Patent number: 7682558
    Abstract: A metallurgical composition is provided for making compacted parts, comprising: (a) at least about 80 percent by weight of an iron or iron-based powder; (b) up to about 20 percent by weight of at least one alloying powder; (c) from about 0.05 to about 2 percent by weight of a binding agent comprising a C14-C30 fatty alcohol; and (d) from about 0.001 to about 0.2 percent by weight of a flow agent.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: March 23, 2010
    Assignee: Höganäs AB (PUBL)
    Inventors: Per Knutsson, Per-Olof Larsson, Hilmar Vidarsson
  • Publication number: 20090107292
    Abstract: An iron-based powder metallurgical composition is provided comprising an iron or iron-based powder and a particulate composite lubricant, the composite lubricant comprising particles having a core comprising a solid organic lubricant having fine carbon particles adhered thereon. A particulate composite lubricant and a method for producing the same also are provided.
    Type: Application
    Filed: December 6, 2006
    Publication date: April 30, 2009
    Applicant: HOGANAS AB (PUBL)
    Inventors: Åsa Ahlin, Anna Ahlquist, Per-Olof Larsson, Naghi Solimnjad
  • Publication number: 20080302209
    Abstract: A metallurgical composition is provided for making compacted parts, comprising: (a) at least about 80 percent by weight of an iron or iron-based powder; (b) up to about 20 percent by weight of at least one alloying powder; (c) from about 0.05 to about 2 percent by weight of a binding agent comprising a C14-C30 fatty alcohol; and (d) from about 0.001 to about 0.2 percent by weight of a flow agent.
    Type: Application
    Filed: December 20, 2006
    Publication date: December 11, 2008
    Applicant: HOGANAS AB (PUBL)
    Inventors: Per Knutsson, Per-Olof Larsson, Hilmar Vidarsson
  • Patent number: 6989062
    Abstract: The present invention concerns a method of improving the properties of powder metallurgically produced SMC compacted body consisting of a soft magnetic material of insulated powder particles and a lubricant, to a stress relieving heat treatment in a furnace until the component has reached a temperature of at least 400° C. in an oxygen containing atmosphere having a CO content is less than 0.25% by volume.
    Type: Grant
    Filed: February 14, 2003
    Date of Patent: January 24, 2006
    Assignee: Höganäs AB
    Inventors: Ye Zhou, Per-Olof Larsson, Henrik Andersson, Lars Hultman
  • Publication number: 20050222404
    Abstract: The present invention relates to a method of isolating a desired nucleic acid from a biological solution, which method comprises to selectively precipitate the desired nucleic acid by adding a polycationic precipitating agent to the solution and allowing it to form a complex with said nucleic acid, wherein the precipitating agent is a highly charged linear polymer that comprises quaternary amino groups. The polycationic precipitating agent is preferably added in such an amount that the charge ratio [+]/[?] between polycationic precipitating agent and nucleic acid is ?0.5, preferably ?0.9 and most preferably ?1 during the precipitation, and in the presence of a salt concentration ensuring the quantitative specific precipitation of the nucleic acid/polycation complex.
    Type: Application
    Filed: June 26, 2003
    Publication date: October 6, 2005
    Inventors: Igor Galaev, Per-Erik Gustavsson, Vladimir Izumrudov, Per-Olof Larsson, Per-Olof Wahlund
  • Publication number: 20040079452
    Abstract: The present invention concerns a method of improving the properties of powder metallurgically produced SMC compacted body consisting of a soft magnetic material of insulated powder particles and a lubricant, to a stress relieving heat treatment in a furnace until the component has reached a temperature of at least 400° C. in an oxygen containing atmosphere having a CO content is less than 0.25% by volume.
    Type: Application
    Filed: February 14, 2003
    Publication date: April 29, 2004
    Inventors: Ye Zhou, Per-Olof Larsson, Henrik Andersson, Lars Hultman
  • Patent number: 5723601
    Abstract: Porous material of a polysaccharide and a method for preparations of such a material, wherein a water-based solution of the polysaccharide is mixed, with controlled stirring, with an essentially water-immiscible organic phase to form an emulsion, which when allowed to solidify, just before or during the gelling process, forms a network of two continuous phases, an aqueous polysaccharide phase and a flow-pore-forming organic phase, resulting in a material with two types of pores: small diameter diffusion pores and large diameter flow through pores.
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: March 3, 1998
    Assignee: Pharmacia Biotech AB
    Inventor: Per Olof Larsson
  • Patent number: 5627643
    Abstract: The present invention comprises a method Of detecting and quantifying components separated by capillary electrophoresis or other techniques using thin capillaries in the separation. The method of the present invention comprises irradiating the whole or large parts of the capillary at short time intervals and detecting the fluorescence originating from the sample components, preferably by a CCD detector (charge coupled device). Thereby, an instantaneous image of the progress of the separation process is obtained. The present invention further comprises an apparatus for performing this detection.
    Type: Grant
    Filed: October 7, 1994
    Date of Patent: May 6, 1997
    Inventors: Staffan Birnbaum, Jonas Johansson, Per-Olof Larsson, Akiyoshi Miyabayashi, Klaus Mosbach, Staffan Nilsson, Sune Svanberg, Karl-Gustav Wahlund
  • Patent number: 4971833
    Abstract: Methods for coating hydrophilic gels onto the surface of solid particles are disclosed which include utilizing hydrophilic solid particles, intimately admixing these hydrophilic solid particles with a hydrophilic gel-forming substance at a temperature above the gelling temperature so as to coat the solid hydrophilic particles, and then separating these coated particles from each other and cooling them to a temperature below the gelling temperature. The use of these coated particles is also disclosed in connection with various separation processes, such as an ion exchanger, in those cases where the gel-forming substance contains charged groups, or providing the particles with suitable adsorbent groups.
    Type: Grant
    Filed: November 2, 1987
    Date of Patent: November 20, 1990
    Assignee: Excorim KB
    Inventors: Per-Olof Larsson, Kersti B. Johnson, Ulf T. G. Nylen, Per I. O. Wikstrom, Ingrid K. Zetterstrand
  • Patent number: 4875613
    Abstract: In a method for the firm bonding at elevated temperatures of thin, large-area wafers of different thermal expansion the deformations of the laminar bond occurring later during cooling are at least partially compensated by an appropriate pre-deformation in the opposite direction. An apparatus for conducting the method uses the different thermal expansion of a housing (1) and a ring-shaped thermal expansion element (3) to produce the pre-deformation.
    Type: Grant
    Filed: March 16, 1989
    Date of Patent: October 24, 1989
    Assignee: BBC Brown Boveri AG
    Inventors: Franz Kloucek, Per-Olof Larsson, Ernst Vogt
  • Patent number: 4832253
    Abstract: In a method for the firm bonding at elevated temperatures of thin, large-area wafers of different thermal expansion the deformations of the laminar bond occurring later during cooling are at least partially compensated by an appropriate pre-deformation in the opposite direction. An apparatus for conducting the method uses the different thermal expansion of a housing (1) and a ring-shaped thermal expansion element (3) to produce the pre-deformation.
    Type: Grant
    Filed: March 15, 1988
    Date of Patent: May 23, 1989
    Assignee: BBC Brown Boveri AG
    Inventors: Franz Kloucek, Per-Olof Larsson, Ernst Vogt
  • Patent number: 4532232
    Abstract: A separation agent composed of a water insoluble solid substance with a convatently bound lectin. Said solid substance is structurally composed of a water insoluble silica or silicate material as basic material and via a linkage to silicon atoms in the silica or silicate material, a covatently bound lectin.
    Type: Grant
    Filed: December 23, 1983
    Date of Patent: July 30, 1985
    Assignee: Pernovo AB
    Inventors: Per-Olof Larsson, Klaus Mosbach, Axel Borchert
  • Patent number: 4406792
    Abstract: A chromatographic separation agent composed of a water unsoluble solid substance showing dihydroxyboryl groups.
    Type: Grant
    Filed: November 16, 1981
    Date of Patent: September 27, 1983
    Inventors: Magnus J. Glad, Sten A. Ohlson, Lennart H. Hansson, Mats-Olle Mansson, Per-Olof Larsson, Klaus H. Mosbach
  • Patent number: 4246346
    Abstract: A method for activating immobilized living microorganisms applied to transformations of steroids, antibiotics and other compounds characterized by the addition of peptone, glucose or a mixture of peptone and glucose to the reaction mixture.
    Type: Grant
    Filed: September 5, 1978
    Date of Patent: January 20, 1981
    Assignee: Aktiebolaget Fermenta
    Inventors: Per-Olof Larsson, Klaus H. Mosbach, Sten A. Ohlson