Patents by Inventor Karl Isak Skau

Karl Isak Skau 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: 10189017
    Abstract: Ho Honeycomb monolith structure, especially for use in mass transfer-limited processes or processes for the selective catalytic reduction (SCR) of nitrogen oxides, comprising: a plurality of cell walls defining a plurality of polygonal channels, the plurality of cell walls and channels extending in parallel along a common direction from an entrance end to an outlet end of the structure in the fluid flow direction. The transversal cross section of a polygonal channel has the shape of a convex elongated polygon, wherein at least 50% of the internal angles between two adjacent walls of the convex polygon are above 90 degrees and wherein the cell diameter ratio LL/LS is greater than 1.5.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: January 29, 2019
    Assignee: YARA INTERNATIONAL ASA
    Inventors: David Waller, Karl Isak Skau, Sang Baek Shin, Bent Erlend Vigeland
  • Patent number: 10150076
    Abstract: Honeycomb monolith structure, especially for use as catalyst or support for a catalyst in selective catalytic reduction (SCR) of nitrogen oxides, comprising: a plurality of cell walls defining a plurality of polygonal channels, the plurality of cell walls and channels extending in parallel along a common direction from an entrance end to an outlet end of the structure in the fluid flow direction. The transversal cross section of a polygonal channel has the shape of a convex polygon in closest packing, wherein more than 50% of the internal angels between two adjacent walls of the convex polygon are above 90 degrees and wherein the cell aspect ratio LL/LS is greater than 1.5. The monolith structure has an outer row of polygons in shifted direction perpendicular to each other at the two side edges of the monolith which are parallel to the longest direction of the cells/channels.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: December 11, 2018
    Assignee: YARA INTERNATIONAL ASA
    Inventor: Karl Isak Skau
  • Publication number: 20170157548
    Abstract: Honeycomb monolith structure, especially for use as catalyst or support for a catalyst in selective catalytic reduction (SCR) of nitrogen oxides, comprising: a plurality of cell walls defining a plurality of polygonal channels, the plurality of cell walls and channels extending in parallel along a common direction from an entrance end to an outlet end of the structure in the fluid flow direction. The transversal cross section of a polygonal channel has the shape of a convex polygon in closest packing, wherein more than 50% of the internal angels between two adjacent walls of the convex polygon are above 90 degrees and wherein the cell aspect ratio LL/LS is greater than 1.5. The monolith structure has an outer row of polygons in shifted direction perpendicular to each other at the two side edges of the monolith which are parallel to the longest direction of the cells/channels.
    Type: Application
    Filed: July 22, 2015
    Publication date: June 8, 2017
    Applicant: YARA INTERNATIONAL ASA
    Inventor: Karl Isak SKAU
  • Publication number: 20150336094
    Abstract: Ho Honeycomb monolith structure, especially for use in mass transfer-limited processes or processes for the selective catalytic reduction (SCR) of nitrogen oxides, comprising: a plurality of cell walls defining a plurality of polygonal channels, the plurality of cell walls and channels extending in parallel along a common direction from an entrance end to an outlet end of the structure in the fluid flow direction. The transversal cross section of a polygonal channel has the shape of a convex elongated polygon, wherein at least 50% of the internal angles between two adjacent walls of the convex polygon are above 90 degrees and wherein the cell diameter ratio LL/LS is greater than 1.5.
    Type: Application
    Filed: January 24, 2014
    Publication date: November 26, 2015
    Inventors: David WALLER, Karl Isak SKAU, Sang Baek SHIN, Bent Erlend VIGELAND
  • Patent number: 8445599
    Abstract: The present inventions relates to a process for producing polyethylene compositions comprising polymerizing polyethylene resins in a cascaded multi-stage reaction in which the reaction steps are performed in at least two slurry phase reactors (A) and (B) and at least one gas phase reactor (C) which are arranged in series in any order wherein in reactor (A) a low molecular weight ethylene homo- or copolymer fraction having a MFR2 of 100 to 2000 g/10 min, in reactor (B) a low molecular weight ethylene homo- or copolymer fraction having an MFR2 of 100 to 2000 g/10 min, and in reactor (C) a high molecular weight ethylene copolymer fraction are polymerized, and further comprising a compounding step after polymerization, wherein the final polyethylene composition has a MFR21 of 3 to 50 g/10 min, the melt flow rates being determined according to ISO 1133.
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: May 21, 2013
    Assignee: Borealis AG
    Inventors: Bill Gustafsson, Jari Hatonen, Petri Rekonen, Markku Vahteri, Siw Bodil Fredriksen, Arild Follestad, Karl Isak Skau
  • Publication number: 20110288237
    Abstract: The present inventions relates to a process for producing polyethylene compositions comprising polymerising polyethylene resins in a cascaded multi-stage reaction in which the reaction steps are performed in at least two slurry phase reactors (A) and (B) and at least one gas phase reactor (C) which are arranged in series in any order wherein in reactor (A) a low molecular weight ethylene homo- or copolymer fraction having a MFR2 of 100 to 2000 g/10 min, in reactor (B) a low molecular weight ethylene homo- or copolymer fraction having an MFR2 of 100 to 2000 g/10 min, and in reactor (C) a high molecular weight ethylene copolymer fraction are polymerised, and further comprising a compounding step after polymerisation, wherein the final polyethylene composition has a MFR21 of 3 to 50 g/10 min, the melt flow rates being determined according to ISO 1133, a multimodal polymer composition comprising a polyethylene resin comprising (i) a first low molecular weight ethylene homo- or copolymer fraction having a MFR2
    Type: Application
    Filed: October 16, 2009
    Publication date: November 24, 2011
    Applicant: BOREALIS AG
    Inventors: Bill Gustafsson, Jari Hatonen, Petri Rekonen, Markku Vahteri, Siw Bodil Fredriksen, Arild Follestad, Karl Isak Skau
  • Publication number: 20110236708
    Abstract: A polyolefin construction comprising at least one polyolefin (PO) layer, a barrier layer for the polyolefin layer and a compatibiliser for the PO and the barrier layer, which compatibiliser enables the PO and barrier layer to adhere together, whereby the barrier layer comprises the compatibiliser; a blended barrier layer polymer and the barrier layer formed therefrom and a process for producing the polyolefin construction.
    Type: Application
    Filed: September 22, 2009
    Publication date: September 29, 2011
    Applicant: Borealis AG
    Inventors: Harry Oysaed, Markus Gahleitner, Karl Isak Skau, Geir Morton Johansen