Patents by Inventor Claus Hviid Christensen

Claus Hviid Christensen 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: 20230070396
    Abstract: The present invention pertains to the production of a novel structurizing oil by enzymatic interesterification which novel structurizing oil is particularly well suited as oil ingredient in e.g. margarines or ice creams.
    Type: Application
    Filed: February 19, 2021
    Publication date: March 9, 2023
    Inventors: Kim CHRISTIANSEN, Lars PREUSS, Claus Hviid CHRISTENSEN, Allan Torben BECH
  • Publication number: 20220227695
    Abstract: The present invention pertains to a method of producing monoglyceride compositions having a low glycidol content. The invention furthermore pertains to such monoglyceride compositions which can be obtained by the method.
    Type: Application
    Filed: June 18, 2020
    Publication date: July 21, 2022
    Inventors: Lars PREUSS, Andrea HÖHNKE, Claus Hviid CHRISTENSEN
  • Patent number: 9889403
    Abstract: Disclosed is a method for the selective catalytic reduction of NOx in waste/exhaust gas by using ammonia provides by heating one or more salts of formula Ma(NH3)nXz, wherein M represents one or more cations selected from alkaline earth metals and transition metals, X represents one or more anions, a represents the number of cations per salt molecule, z represents the number of anions per salt molecule, and n is a number of from 2 to 12, the one or more salts having been compressed to a bulk density above 70% of the skeleton density before use thereof.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: February 13, 2018
    Assignee: AMMINEX EMISSIONS TECHNOLOGY A/S
    Inventors: Claus Hviid Christensen, Tue Johannessen, Ulrich Quaade, Jens Kehlet Nørskov, Rasmus Zink Sørensen
  • Patent number: 8578702
    Abstract: A method of storing and delivering ammonia and the use of electromagnetic radiation for desorption of ammonia from a chemical complex. Solid metal ammine complexes are applied for safe and high-density storage of ammonia to be released for use as reducing agent in selective catalytic reduction of NOx in exhaust gases. The compositional formula of the metal ammine complexes is M(NH3)nXz, where M2+ represents one or more metal ions capable of binding ammonia, X represents one or more anions, n is the coordination number (from 2 to 12), and z the valency of the metal ion (and thus the total number of compensating anion charges). Ammonia is released non-thermally by photon-activation using electromagnetic irradiation of the complex bond between ammonia coordinated to the metal ion.
    Type: Grant
    Filed: February 27, 2007
    Date of Patent: November 12, 2013
    Assignee: Amminex Emissions Technology A/S
    Inventors: Tue Johannessen, Rasmus Zink Sørensen, Claus Hviid Christensen, Ulrich Quaade, Jens Kehlet Nørskov, Henning Schmidt
  • Publication number: 20130230443
    Abstract: Disclosed is a method for the selective catalytic reduction of NOx in waste/exhaust gas by using ammonia provides by heating one or more salts of formula Ma(NH3)nXz, wherein M represents one or more cations selected from alkaline earth metals and transition metals, X represents one or more anions, a represents the number of cations per salt molecule, z represents the number of anions per salt molecule, and n is a number of from 2 to 12, the one or more salts having been compressed to a bulk density above 70% of the skeleton density before use thereof.
    Type: Application
    Filed: February 26, 2013
    Publication date: September 5, 2013
    Inventors: Claus Hviid Christensen, Tue Johannessen, Ulrich Quaade, Jens Kehlet Norskøv, Rasmus Zink Sørensen
  • Patent number: 8471060
    Abstract: A process and reactor for the production of acetic acid comprising the steps of: passing a feed stream containing ethanol and water together with a predetermined feed rate of an oxygen containing atmosphere in presence of one or more catalysts being active in simultaneous non-oxidative and oxidative conversion of ethanol to a product stream with acetic acid; recovering from the product stream a stream of acetic acid; optionally recovering reactive derivatives of acetic acid and recycling these to step (a).
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: June 25, 2013
    Assignee: Haldor Topsoe A/S
    Inventors: Claus Hviid Christensen, Niels Christian Schiødt, Bodil Voss
  • Patent number: 8440855
    Abstract: An integrated process for the production of acetic acid, ethylene and vinyl acetate monomer comprising the steps of: (a) evaporating at least part of an ethanol feed stock (b) producing in a first reaction zone a first product stream comprising acetic acid by oxidative or partly oxidative dehydrogenation of ethanol feed stock; (c) producing in a second reaction zone a second product stream comprising ethylene from an ethanol feed stock; (d) reacting in a third reaction zone an acetic acid reaction stream containing at least a portion of the acetic acid from the first reaction zone with an ethylene reaction stream containing at least a portion of the ethylene product from the second reaction zone and with oxygen to a third product stream comprising vinyl acetate monomer; (e) passing at least a portion of the third product stream to a distillation section and isolating at least a portion of the vinyl acetate monomer; (f) supplying at least part of reaction heat from the third reaction zone to provide heat for
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: May 14, 2013
    Assignee: Haldor Topsoe A/S
    Inventors: Bodil Voss, Rachid Mabrouk, Claus Hviid Christensen
  • Publication number: 20110137074
    Abstract: An integrated process for the production of acetic acid, ethylene and vinyl acetate monomer comprising the steps of: (a) evaporating at least part of an ethanol feed stock (b) producing in a first reaction zone a first product stream comprising acetic acid by oxidative or partly oxidative dehydrogenation of ethanol feed stock; (c) producing in a second reaction zone a second product stream comprising ethylene from an ethanol feed stock; (d) reacting in a third reaction zone an acetic acid reaction stream containing at least a portion of the acetic acid from the first reaction zone with an ethylene reaction stream containing at least a portion of the ethylene product from the second reaction zone and with oxygen to a third product stream comprising vinyl acetate monomer; (e) passing at least a portion of the third product stream to a distillation section and isolating at least a portion of the vinyl acetate monomer; (f) supplying at least part of reaction heat from the third reaction zone to provide heat for
    Type: Application
    Filed: December 8, 2010
    Publication date: June 9, 2011
    Inventors: Bodil Voss, Rachid Mabrouk, Claus Hviid Christensen
  • Publication number: 20110060174
    Abstract: Provided is a catalyst including a mixture of metal A selected from Fe, Co and Ni, and metal B selected from Zn and Ga, and a support material, where the two metals are present in an intermetallic composition; A method for the manufacture of the catalyst; and the use of the catalyst for the selective hydrogenation of acetylene to ethylene in a gas mixture including acetylenic impurities and hydrogen, and one or more of ethylene and carbon monoxide. The catalyst has a high selectivity and is based an easily available metal compounds.
    Type: Application
    Filed: January 7, 2009
    Publication date: March 10, 2011
    Applicant: DANMARKS TEKNISKE UNIVERSITET - DTU
    Inventors: Felix Studt, Jens Kehlet Nørskov, Claus Hviid Christensen, Rasmus Zink Sørensen, Frank Abild-Pedersen, Thomas Bligaard
  • Publication number: 20100293927
    Abstract: Solid metal ammine complexes are applied for safe and high-density storage of ammonia to be released for use as reducing agent in selective catalytic reduction of NOx in exhaust gases. The compositional formula of the metal ammine complexes is M(NH3)nXz, where MZ+ represents one or more metal ions capable of binding ammonia, X represents one or more anions, n is the coordination number (from 2 to 12), and z the valency of the metal ion (and thus the total number of compensating anion charges). Ammonia is released by generating a reduced gas-phase pressure of ammonia inside the container, which is below the equilibrium desorption pressure of ammonia at the operating temperature of the storage material thus enabling the unit to be operated is a safe manner with lower operating temperature and pressure.
    Type: Application
    Filed: June 29, 2006
    Publication date: November 25, 2010
    Inventors: Tue Johannessen, Rasmus Zink Sorensen, Claus Hviid Christensen, Ulrich Quaade, Jens Kehlet Norskov
  • Patent number: 7824657
    Abstract: A method for producing zeolite or zeotype crystals with a hierarchical pore system having both pores with average diameter between 0.3-2 nm and pores with an average diameter size larger than 4 nm in diameter, comprising the steps of applying a carbohydrate or a carbohydrate solution onto a zeolite precursor material or into a zeolite precursor composition, partly or fully decomposing the carbohydrate, crystallizing the zeolite, removing the partly or fully decomposed carbohydrate by calcination or combustion.
    Type: Grant
    Filed: June 27, 2007
    Date of Patent: November 2, 2010
    Assignee: Haldor Topsoe A/S
    Inventors: Claus Hviid Christensen, Kake Zhu, Marina Kegnaes, Kresten Egeblad
  • Patent number: 7790776
    Abstract: A process for hydrogenation of carbon oxides comprising contacting a gas mixture containing carbon oxides and of hydrogen with a catalyst comprising bimetallic iron-nickel or iron-cobalt alloys as the active catalytic material supported on a carrier of an oxide. The carrier is preferably formed to have a surface area greater than 20 m2/g.
    Type: Grant
    Filed: August 28, 2006
    Date of Patent: September 7, 2010
    Assignee: Haldor Topsoe A/S
    Inventors: Claus Hviid Christensen, Martin Andersson, Arkady Kustov, Tue Johannesen, Thomas Bligaard, Kasper E. Larsen, Jens K. Nørskov, Jens Sehested
  • Publication number: 20100130776
    Abstract: A process and reactor for the production of acetic acid comprising the steps of: passing a feed stream containing ethanol and water together with a predetermined feed rate of an oxygen containing atmosphere in presence of one or more catalysts being active in simultaneous non-oxidative and oxidative conversion of ethanol to a product stream with acetic acid; recovering from the product stream a stream of acetic acid; optionally recovering reactive derivatives of acetic acid and recycling these to step (a).
    Type: Application
    Filed: November 23, 2009
    Publication date: May 27, 2010
    Inventors: Claus Hviid Christensen, Niels Christian Schiødt, Bodil Voss
  • Publication number: 20100050615
    Abstract: Solid metal ammine complexes are applied for safe and high-density storage of ammonia to be released for use as reducing agent in selective catalytic reduction of NOx in exhaust gases or as an energy carrier for fuel cell applications. The compositional formula of the metal ammine complexes is M(NH3)nXz, where Mz+ represents one or more metal ions capable of binding ammonia, X represents one or more anions, n is the coordination number (from 2 to 12), and z the valency of the metal ion (and thus the total number of compensating anion charges). Ammonia is released by controlled dosing of water into the storage container whereby ammonia is released because water replaces ammonia on the active sites capable of binding ammonia. Consequently, ammonia can be released without applying a normal thermal desorption of ammonia and the operating temperature of the system is reduced as well as the energy needed for releasing ammonia.
    Type: Application
    Filed: July 19, 2007
    Publication date: March 4, 2010
    Applicant: Gladsaxevej 363
    Inventors: Tue Johannessen, Henning Schmidt, Jens Kehlef Norskov, Claus Hviid Christensen
  • Publication number: 20100024403
    Abstract: A solid ammonia storage and delivery material comprising an ammonia absorbing/desorbing solid material, said storage and delivery material having been compacted to a density above 50% of the theoretic skeleton density provides a solid ammonia storage material which is easy to produce and handle and has a very high density of stored ammonia which is readily released under controlled conditions even though the porosity of the material is very low, and which storage material is safe for storage and transport of ammonia without special safety measures.
    Type: Application
    Filed: October 13, 2009
    Publication date: February 4, 2010
    Applicant: Amminex A/S
    Inventors: Tue Johannessen, Claus Hviid Christensen, Jens Kehlet Norskov, Ulrich Quaade, Rasmus Zink Sorensen
  • Publication number: 20090313976
    Abstract: A method of storing and delivering ammonia and the use of electromagnetic radiation for desorption of ammonia from a chemical complex. Solid metal ammine complexes are applied for safe and high-density storage of ammonia to be released for use as reducing agent in selective catalytic reduction of NOx in exhaust gases. The compositional formula of the metal ammine complexes is M(NH3)nXz, where M2+ represents one or more metal ions capable of binding ammonia, X represents one or more anions, n is the coordination number (from 2 to 12), and z the valency of the metal ion (and thus the total number of compensating anion charges).
    Type: Application
    Filed: February 27, 2002
    Publication date: December 24, 2009
    Applicant: Amminex A/S
    Inventors: Tue Johannessen, Rasmus Zink Sørensen, Claus Hviid Christensen, Ulrich Quaade, Jens Kehlet Nørskov, Henning Schmidt
  • Publication number: 20090280047
    Abstract: A solid ammonia storage and delivery material A solid ammonia storage material comprising: an ammonia absorbing salt, wherein the ammonia absorbing salt is an ionic salt of the general formula: Ma(NH3)nXz, wherein M is one or more cations selected from alkaline earth metals, and/or one or more transition metals, such as Mn, Fe, Co, Ni, Cu, and/or Zn, X is one or more anions, a is the number of cations per salt molecule, z is the number of anions per salt molecule, and ri is the coordination number of 2 to 12, wherein M is Mg provides a safe, light-weight and cheap compact storage for ammonia to be used in the automotive industry.
    Type: Application
    Filed: August 3, 2005
    Publication date: November 12, 2009
    Inventors: Claus Hviid Christensen, Tue Johannessen, Ulrich Quaade, Jens Kehlet, Rasmus Zink
  • Publication number: 20090123361
    Abstract: A solid ammonia storage and delivery material comprising an ammonia absorbing/desorbing solid material, said storage and delivery material having been compacted to a density above 50% of the theoretic skeleton density provides a solid ammonia storage material which is easy to produce and handle and has a very high density of stored ammonia which is readily released under controlled conditions even though the porosity of the material is very low, and which storage material is safe for storage and transport of ammonia without special safety measures.
    Type: Application
    Filed: February 3, 2006
    Publication date: May 14, 2009
    Applicant: Amminex A/S
    Inventors: Tue Johannessen, Claus Hviid Christensen, Jens Kehlet Norskov, Ulrich Quaade, Rasmus Zink Sorensen
  • Publication number: 20080221227
    Abstract: A process for hydrogenation of carbon oxides comprising contacting a gas mixture containing carbon oxides and of hydrogen with a catalyst comprising bimetallic iron-nickel or iron-cobalt alloys as the active catalytic material supported on a carrier of an oxide. The carrier is preferably formed to have a surface area greater than 20 m2/g.
    Type: Application
    Filed: August 28, 2006
    Publication date: September 11, 2008
    Inventors: Claus Hviid Christensen, Martin Andersson, Arkady Kustov, Tue Johannesen, Thomas Bligaard, Kasper E. Larsen, Jens K. Norskov, Jens Sehested
  • Patent number: 7411103
    Abstract: A process for catalytic isomerisation of alkyl aromatic compounds in a hydrocarbon process stream comprising contacting the alkyl aromatic compound-containing hydrocarbon stream under isomerisation conditions with a crystalline zeolite catalyst consisting of individual, primary crystals having an intracrystalline, non-crystallographic mesopore system and a mesopore volume of the zeolite crystals above 0.25.
    Type: Grant
    Filed: November 4, 2004
    Date of Patent: August 12, 2008
    Assignee: Haldor Topsoe A/S
    Inventors: Ivar Schmidt, Christina Hviid Christensen, Michael Brorson, Erik G. Derouane, Claus Hviid Christensen, Eric G. Derouane