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).
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Patent number: 12291450Abstract: 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: GrantFiled: December 3, 2019Date of Patent: May 6, 2025Assignee: HÖGANÄS AB (PUBL)Inventors: Per-Olof Larsson, Björn Skårman, Hilmar Vidarsson
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Publication number: 20220041449Abstract: 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: ApplicationFiled: December 3, 2019Publication date: February 10, 2022Applicant: Höganäs AB (Publ)Inventors: Per-Olof LARSSON, Björn SKÅRMAN, Hilmar VIDARSSON
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Patent number: 9816164Abstract: 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: GrantFiled: September 18, 2013Date of Patent: November 14, 2017Assignee: HÖGANÄS AB (PUBL)Inventors: Per-Olof Larsson, Sigurd Berg, Hilmar Vidarsson, Leen Bastiaens, Milica Limirovic
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Publication number: 20150232967Abstract: 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: ApplicationFiled: September 18, 2013Publication date: August 20, 2015Applicant: HOGANAS AB (PUBL)Inventors: Per-Olof Larsson, Sigurd Berg, Hilmar Vidarsson, Leen Bastiaens, Milica Velimirovic
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Patent number: 8337761Abstract: 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: GrantFiled: December 21, 2007Date of Patent: December 25, 2012Assignees: Volvo Technology Corp., Höganäs ABInventors: Lennart Andersson, Jonas Edvardsson, Edward Jobson, Heije Westberg, Per-Olof Larsson, Owe Mars, Jörgen Knuth-Nielsen
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Patent number: 7993429Abstract: 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: GrantFiled: December 6, 2006Date of Patent: August 9, 2011Assignee: Höganäs AB (PUBL)Inventors: Åsa Ahlin, Anna Ahlquist, Per-Olof Larsson, Naghi Solimnjad
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Publication number: 20110027136Abstract: 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: ApplicationFiled: December 21, 2007Publication date: February 3, 2011Inventors: Lennart Andersson, Jonas Edvardsson, Edward Jobson, Heije Westberg, Per-Olof Larsson, Owe Mars, Jörgen Knuth-Nielsen
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Patent number: 7682558Abstract: 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: GrantFiled: December 20, 2006Date of Patent: March 23, 2010Assignee: Höganäs AB (PUBL)Inventors: Per Knutsson, Per-Olof Larsson, Hilmar Vidarsson
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Publication number: 20090107292Abstract: 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: ApplicationFiled: December 6, 2006Publication date: April 30, 2009Applicant: HOGANAS AB (PUBL)Inventors: Åsa Ahlin, Anna Ahlquist, Per-Olof Larsson, Naghi Solimnjad
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Publication number: 20080302209Abstract: 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: ApplicationFiled: December 20, 2006Publication date: December 11, 2008Applicant: HOGANAS AB (PUBL)Inventors: Per Knutsson, Per-Olof Larsson, Hilmar Vidarsson
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Patent number: 6989062Abstract: 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: GrantFiled: February 14, 2003Date of Patent: January 24, 2006Assignee: Höganäs ABInventors: Ye Zhou, Per-Olof Larsson, Henrik Andersson, Lars Hultman
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Publication number: 20050222404Abstract: 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: ApplicationFiled: June 26, 2003Publication date: October 6, 2005Inventors: Igor Galaev, Per-Erik Gustavsson, Vladimir Izumrudov, Per-Olof Larsson, Per-Olof Wahlund
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Publication number: 20040079452Abstract: 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: ApplicationFiled: February 14, 2003Publication date: April 29, 2004Inventors: Ye Zhou, Per-Olof Larsson, Henrik Andersson, Lars Hultman
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Patent number: 5723601Abstract: 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: GrantFiled: September 16, 1994Date of Patent: March 3, 1998Assignee: Pharmacia Biotech ABInventor: Per Olof Larsson
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Patent number: 5627643Abstract: 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: GrantFiled: October 7, 1994Date of Patent: May 6, 1997Inventors: Staffan Birnbaum, Jonas Johansson, Per-Olof Larsson, Akiyoshi Miyabayashi, Klaus Mosbach, Staffan Nilsson, Sune Svanberg, Karl-Gustav Wahlund
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Patent number: 4971833Abstract: 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: GrantFiled: November 2, 1987Date of Patent: November 20, 1990Assignee: Excorim KBInventors: Per-Olof Larsson, Kersti B. Johnson, Ulf T. G. Nylen, Per I. O. Wikstrom, Ingrid K. Zetterstrand
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Patent number: 4875613Abstract: 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: GrantFiled: March 16, 1989Date of Patent: October 24, 1989Assignee: BBC Brown Boveri AGInventors: Franz Kloucek, Per-Olof Larsson, Ernst Vogt
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Patent number: 4832253Abstract: 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: GrantFiled: March 15, 1988Date of Patent: May 23, 1989Assignee: BBC Brown Boveri AGInventors: Franz Kloucek, Per-Olof Larsson, Ernst Vogt
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Patent number: 4532232Abstract: 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: GrantFiled: December 23, 1983Date of Patent: July 30, 1985Assignee: Pernovo ABInventors: Per-Olof Larsson, Klaus Mosbach, Axel Borchert
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Patent number: 4406792Abstract: A chromatographic separation agent composed of a water unsoluble solid substance showing dihydroxyboryl groups.Type: GrantFiled: November 16, 1981Date of Patent: September 27, 1983Inventors: Magnus J. Glad, Sten A. Ohlson, Lennart H. Hansson, Mats-Olle Mansson, Per-Olof Larsson, Klaus H. Mosbach