Patents by Inventor Lazar Strezov
Lazar Strezov 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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Publication number: 20240132781Abstract: A method and an apparatus for processing wood wastes and producing valuable products that are safe and have economic value is disclosed. The apparatus includes a continuous converter (3) for a feed material that includes wood wastes containing contaminants. The continuous converter includes a reaction chamber (5) for producing a solid carbon-containing product, a gas product, and optionally a liquid oil product and a separate water-based condensate product in the chamber, via pyrolysis or other reaction mechanisms.Type: ApplicationFiled: December 29, 2023Publication date: April 25, 2024Inventors: Joseph George Herbertson, Lazar Strezov, Kannappar Mukunthan
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Patent number: 11110421Abstract: A method and an apparatus for destroying biosecurity hazards in quarantined feed materials and producing valuable products that are safe and have economic value is disclosed. The apparatus includes a continuous converter (3) that has a reaction chamber (5) for producing a solid carbon-containing product, a gas product, and optionally an oil product and a separate water-based condensate product in the chamber, via pyrolysis or other reaction mechanisms.Type: GrantFiled: September 1, 2017Date of Patent: September 7, 2021Assignee: The Crucible Group IP Pty LtdInventors: Joseph George Herbertson, Lazar Strezov, Kannappar Mukunthan
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Publication number: 20200010763Abstract: A method and an apparatus for processing wood wastes and producing valuable products that are safe and have economic value is disclosed. The apparatus includes a continuous converter (3) for a feed material that includes wood wastes containing contaminants. The continuous converter includes a reaction chamber (5) for producing a solid carbon-containing product, a gas product, and optionally a liquid oil product and a separate water-based condensate product in the chamber, via pyrolysis or other reaction mechanisms.Type: ApplicationFiled: September 1, 2017Publication date: January 9, 2020Inventors: Joseph George Herbertson, Lazar Strezov, Kannappar Mukunthan
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Publication number: 20190240633Abstract: A method and an apparatus for destroying biosecurity hazards in quarantined feed materials and producing valuable products that are safe and have economic value is disclosed. The apparatus includes a continuous converter (3) that has a reaction chamber (5) for producing a solid carbon-containing product, a gas product, and optionally an oil product and a separate water-based condensate product in the chamber, via pyrolysis or other reaction mechanisms.Type: ApplicationFiled: September 1, 2017Publication date: August 8, 2019Inventors: Joseph George Herbertson, Lazar Strezov, Kannappar Mukunthan
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Patent number: 10364394Abstract: A continuous converter for pyrolyzing or otherwise processing biomass or other solid organic feed materials includes a reaction chamber (5) for producing a solid carbon-containing product and a gas product and optionally a liquid water product via pyrolysis or other reaction mechanisms from a solid organic feed material. The chamber has an inlet (41) for supplying a solid organic feed material to the chamber and separate outlets (15, 35) for the solid carbon-containing product and the gas product produced in the reaction chamber. The inlet and the solid carbon-containing product outlet are configured so that the solid materials in the inlet and in the outlet form respective gas seals in the inlet and the outlet.Type: GrantFiled: October 29, 2014Date of Patent: July 30, 2019Assignee: The Crucible Group Pty LtdInventors: Lazar Strezov, Steve Osborn, Joseph George Herbertson
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Patent number: 9708540Abstract: A method and an apparatus for pyrolysing a solid organic feed material are disclosed. Solid organic material is moved through a reaction chamber and exposed to a temperature profile within the chamber that dries and pyrolyses the organic material and releases water vapour and a volatile products gas phase. The water vapour phase and the volatile products gas phase are moved counter-current to the solid organic material so that the water vapour phase and condensable components of the volatile products gas phase condense in cooler upstream sections of the chamber and form a liquid water product and a separate liquid oil product. The liquid water product is discharged via an outlet along the length of the chamber and a dried and pyrolysed solid product is discharged from a downstream outlet in the chamber.Type: GrantFiled: June 30, 2014Date of Patent: July 18, 2017Assignee: The Crucible Group Pty LtdInventors: Lazar Strezov, Steven Robert Osborn, Joseph George Herbertson, Gary Kenneth Ellem
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Patent number: 8888962Abstract: A method and an apparatus for pyrolysing a solid organic feed material are disclosed. Solid organic material is moved through a reaction chamber and exposed to a temperature profile within the chamber that dries and pyrolyses the organic material and releases water vapour and a volatile products gas phase. The water vapour phase and the volatile products gas phase are moved counter-current to the solid organic material so that the water vapour phase and condensable components of the volatile products gas phase condense in cooler upstream sections of the chamber and form a liquid water product and a separate liquid oil product. The liquid water product is discharged via an outlet along the length of the chamber and a dried and pyrolysed solid product is discharged from a downstream outlet in the chamber. The chamber includes a plurality of heat transfer members extending within the chamber and a supply of oxygen-containing gas for establishing and maintaining the temperature profile within the chamber.Type: GrantFiled: April 14, 2009Date of Patent: November 18, 2014Assignee: The Crucible Group Pty LtdInventors: Lazar Strezov, Steven Robert Osborn, Joseph George Herbertson, Gary Kenneth Ellem
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Publication number: 20140311883Abstract: A method and an apparatus for pyrolysing a solid organic feed material are disclosed. Solid organic material is moved through a reaction chamber and exposed to a temperature profile within the chamber that dries and pyrolyses the organic material and releases water vapour and a volatile products gas phase. The water vapour phase and the volatile products gas phase are moved counter-current to the solid organic material so that the water vapour phase and condensable components of the volatile products gas phase condense in cooler upstream sections of the chamber and form a liquid water product and a separate liquid oil product. The liquid water product is discharged via an outlet along the length of the chamber and a dried and pyrolysed solid product is discharged from a downstream outlet in the chamber.Type: ApplicationFiled: June 30, 2014Publication date: October 23, 2014Inventors: Lazar Strezov, Steven Robert Osborn, Joseph George Herbertson, Gary Kenneth Ellem
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Patent number: 8016021Abstract: A method of producing cast steel strip having low surface roughness and low porosity by casting with molten steel having a total oxygen content of at least about 70 ppm and a free oxygen content between 20 and 60 ppm, and a temperature that allows a majority of any oxide inclusions to be in a liquidus state. The total oxygen content may be at least 100 ppm and the free oxygen content between 30 and 50 ppm. The steel strip produced by the method may have a per unit area density of at least about 120 oxide inclusions per square millimeter to a depth of about 2 microns from the strip surface.Type: GrantFiled: October 5, 2007Date of Patent: September 13, 2011Assignee: Nucor CorporationInventors: Walter N. Blejde, Rama Ballav Mahapatra, Lazar Strezov
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Patent number: 8002908Abstract: A steel product with a high austenite grain coarsening temperature having less than 0.4% carbon, less than 0.06% aluminium, less than 0.01% titanium, less than 0.01% niobium, and less than 0.02% vanadium by weight, and having fine oxide particles containing silicon and iron distributed through the steel microstructure having an average particle size less than 50 nanometers and may be between 5 and 30 nanometers. The steel product may have fine oxide particles distributed through the microstructure capable of restricting ferrite recrystallization for strain levels up to at least 10.0%, for temperatures up to 750° C. with holding times up to 20 minutes. The steel product may be made by continuous casting of steel strip introduced between the casting rolls to form a casting pool of molten carbon steel having a total oxygen content of at least 70 ppm usually less than 250 ppm, and a free oxygen content 20 and 60 ppm, counter rotating the casting rolls.Type: GrantFiled: February 2, 2009Date of Patent: August 23, 2011Assignee: Nucor CorporationInventors: Walter N. Blejde, Rama Ballav Mahapatra, James Geoffrey Williams, Frank Barbaro, Philip John Renwick, Harold Roland Kaul, Andrew Phillips, Christopher Ronald Killmore, Lazar Strezov
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Publication number: 20110048918Abstract: A method and an apparatus for pyrolysing a solid organic feed material are disclosed. Solid organic material is moved through a reaction chamber and exposed to a temperature profile within the chamber that dries and pyrolyses the organic material and releases water vapour and a volatile products gas phase. The water vapour phase and the volatile products gas phase are moved counter-current to the solid organic material so that the water vapour phase and condensable components of the volatile products gas phase condense in cooler upstream sections of the chamber and form a liquid water product and a separate liquid oil product. The liquid water product is discharged via an outlet along the length of the chamber and a dried and pyrolysed solid product is discharged from a downstream outlet in the chamber.Type: ApplicationFiled: April 14, 2009Publication date: March 3, 2011Applicant: The Crucible Group Pty LtdInventors: Lazar Strezov, Steven Robert Osborn, Joseph George Herbertson, Gary Kenneth Ellem
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Patent number: 7604039Abstract: In twin roll casting of steel strip, molten steel is introduced into the nip between parallel casting rolls to create a casting pool supported on casting surfaces of the rolls and the rolls are rotated to deliver solidified strip downwardly from the nip. Casting surfaces are textured by a random pattern of discrete projections, which may have an average surface distribution of between 5 and 200 peaks per mm2 and an average height of at least 10 microns. In order to suppress chatter defects, the molten steel also has manganese content of at least 0.55% by weight and a silicon content in the range of 0.1 to 0.35% by weight. The strip is thus capable of moving away from the casting pool at a speed of more than 60 meters per minute without substantial high speed chattering defects.Type: GrantFiled: July 11, 2006Date of Patent: October 20, 2009Assignee: Castrip, LLCInventors: Nikolco S. Nikolovski, Rama Ballav Mahapatra, Lazar Strezov
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Patent number: 7591917Abstract: Steel strips and methods for producing strip are provided. The method for producing steel strips comprises continuously casting low carbon, silicon/manganese killed or aluminum killed molten steel into a strip, the molten steel comprising a concentration of residuals of 2.0 equal to or less than about 2.0 wt % is selected with regard to the microstructure of the finished strip to provide a desired yield strength, where the residuals are selected in desired amounts from the group consisting of copper, nickel, chromium, molybdenum and tin, and cooling the strip to transform the strip from austenite to ferrite in a desired temperature range. Cast steel with improved yield strength properties is produced by such method.Type: GrantFiled: March 27, 2003Date of Patent: September 22, 2009Assignee: Nucor CorporationInventors: Lazar Strezov, Kannappar Mukunthan, Walter N. Blejde, Rama Ballav Mahapatra
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Patent number: 7588649Abstract: A method of producing strip including the steps of assembling a pair of casting rolls with a nip between them, introducing between the casting rolls to form a casting pool of molten carbon steel having a total oxygen content of at least 70 ppm, usually less than 250 ppm, and a free oxygen content 20 and 60 ppm, counter rotating the casting rolls, solidifying the molten steel on the rolls to form metal shells with levels of oxide inclusions reflected by the total oxygen content of the molten steel, and forming thin steel strip through the nip between the casting rolls from the solidified shells. The molten steel may have a total oxygen content is at least 100 ppm and the free oxygen content may be between 30 and 50 ppm. A unique steel strip may be obtained using the method having ductile properties.Type: GrantFiled: May 22, 2006Date of Patent: September 15, 2009Assignee: Nucor CorporationInventors: Walter N. Blejde, Rama Ballav Mahapatra, Lazar Strezov
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Publication number: 20090191425Abstract: A steel product with a high austenite grain coarsening temperature having less than 0.4% carbon, less than 0.06% aluminium, less than 0.01% titanium, less than 0.01% niobium, and less than 0.02% vanadium by weight, and having fine oxide particles containing silicon and iron distributed through the steel microstructure having an average particle size less than 50 nanometers and may be between 5 and 30 nanometers. The steel product may have fine oxide particles distributed through the microstructure capable of restricting ferrite recrystallization for strain levels up to at least 10.0%, for temperatures up to 750° C. with holding times up to 20 minutes. The steel product may be made by continuous casting of steel strip introduced between the casting rolls to form a casting pool of molten carbon steel having a total oxygen content of at least 70 ppm usually less than 250 ppm, and a free oxygen content 20 and 60 ppm, counter rotating the casting rolls.Type: ApplicationFiled: February 2, 2009Publication date: July 30, 2009Applicant: Nucor CorporationInventors: Walter N. Blejde, Rama Ballav Mahapatra, James Geoffrey Williams, Frank Barbaro, Philip John Renwick, Harold Roland Kaul, Andrew Phillips, Christopher Ronald Killmore, Lazar Strezov
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Patent number: 7485196Abstract: A steel product with a high austenite grain coarsening temperature having less than 0.4% carbon, less than 0.06% aluminium, less than 0.01% titanium, less than 0.01% niobium, and less than 0.02% vanadium by weight, and having fine oxide particles containing silicon and iron distributed through the steel microstructure having an average particle size less than 50 nanometers and may be between 5 and 30 nanometers. The steel product may have fine oxide particles distributed through the microstructure capable of restricting ferrite recrystallisation for strain levels up to at least 10.0%, for temperatures up to 750° C. with holding times up to 20 minutes. The steel product may be made by continuous casting of steel strip introduced between the casting rolls to form a casting pool of molten carbon steel having a total oxygen content of at least 70 ppm usually less than 250 ppm, and a free oxygen content 20 and 60 ppm, counter rotating the casting rolls.Type: GrantFiled: October 20, 2005Date of Patent: February 3, 2009Assignee: Nucor CorporationInventors: Walter N. Blejde, Rama Ballav Mahapatra, James Geoffrey Williams, Frank Barbaro, Philip John Renwick, Harold Roland Kaul, Andrew Phillips, Christopher Ronald Killmore, Lazar Strezov
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Publication number: 20080110764Abstract: A method of electrolytically reducing a metal oxide (such as aluminium and magnesium oxides) to produce a metal in an electrolytic call is disclosed. The method includes electrolytically reducing the metal oxide in an electrolytic cell that includes a pool of molten metal, the metal being the metal of the metal oxide to be reduced, and the molten metal pool forming a cathode of the cell. The electrolytic cell also includes a pool of molten electrolyte in contact with the molten metal, the electrolyte containing alkali and/or alkaline earth halides. The electrolytic cell also includes an anode extending into the electrolyte and a body of metal oxide to reduced in contact with the molten metal and the electrolyte.Type: ApplicationFiled: October 26, 2007Publication date: May 15, 2008Inventors: Lazar Strezov, Ivan Ratchev, Steve Osborn
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Patent number: 7367378Abstract: A method of producing cast steel strip having low surface roughness and low porosity by casting with molten steel having a total oxygen content of at least about 100 ppm and a temperature that allows a majority of any oxide inclusions to be in a liquidus state. The steel strip produced by the method may have a per unit area density of at least about 120 oxide inclusions per square millimeter to a depth of about 2 microns from the strip surface.Type: GrantFiled: March 28, 2006Date of Patent: May 6, 2008Assignee: Nucor CorporationInventors: Walter Blejde, Rama Mahapatra, Lazar Strezov
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Publication number: 20080032150Abstract: A method of producing cast steel strip having low surface roughness and low porosity by casting with molten steel having a total oxygen content of at least about 70 ppm and a free oxygen content between 20 and 60 ppm, and a temperature that allows a majority of any oxide inclusions to be in a liquidus state. The total oxygen content may be at least 100 ppm and the free oxygen content between 30 and 50 ppm. The steel strip produced by the method may have a per unit area density of at least about 120 oxide inclusions per square millimeter to a depth of about 2 microns from the strip surface.Type: ApplicationFiled: October 5, 2007Publication date: February 7, 2008Applicant: NUCOR CORPORATIONInventors: Walter Blejde, Rama Mahapatra, Lazar Strezov
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Patent number: 7299856Abstract: A thin steel strip with low surface roughness and low porosity produced by casting with molten steel having a total oxygen content of at least about 100 ppm and a temperature that allows a majority of any oxide inclusions to be in a liquidus state. The steel strip produced by the method may have a per unit area density of at least about 120 oxide inclusions per square millimeter to a depth of about 2 microns from the strip surface.Type: GrantFiled: December 1, 2004Date of Patent: November 27, 2007Assignee: Nucor CorporationInventors: Walter Blejde, Rama Mahapatra, Lazar Strezov