Patents by Inventor Karsten Laurents

Karsten Laurents 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).

  • Process for the recovery of perfluorinated sulphonic acids from spent acid residue
    Patent number: 6891076
    Abstract: Process for the recovery of perfluorinated sulphonic acid from a hydrocarbon residue, comprising the steps of (a) treating the residue with an alkyl ammonium salt of the perfluorinated sulphonic acid or a mixture of an alkyl ammonium salt of the perfluorinated sulphonic acid and the perfluorinated sulphonic acid in an amount being effective to liquefy the residue at ambient temperature; (b) contacting the liquefied residue with water at conditions to obtaining an aqueous extract containing the perfluorinated sulphonic acid and/or the alkyl ammonium salt of the perfluorinated acid into water; and (c) separating water from the aqueous extract to recover the perfluorinated sulphonic acid or the mixture of the acid and the ammonium salt.
    Type: Grant
    Filed: May 15, 2002
    Date of Patent: May 10, 2005
    Assignee: Haldor Topsoe A/S
    Inventors: Karsten Laurents, Ole Stahl
  • Process for the preparation of mono alkyl aromatic compounds
    Patent number: 6573415
    Abstract: Process for the mono alkylation of a hydrocarbon substrate containing aromatic hydrocarbon compounds comprising contacting the aromatic substrate with an alkylating agent consisting of a mixture of olefinic compounds and poly-alkylated aromatic compounds in presence of a fluorinated sulphonic acid.
    Type: Grant
    Filed: August 20, 2001
    Date of Patent: June 3, 2003
    Assignee: Haldor Topsoe A/S
    Inventors: Sven Ivar Hommeltoft, Karsten Laurents
  • Process for the recovery of perfluorinated sulphonic acids from spent acid residue
    Publication number: 20030004388
    Abstract: Process for the recovery of perfluorinated sulphonic acid from a hydrocarbon residue, comprising the steps of (a) treating the residue with an alkyl ammonium salt of the perfluorinated sulphonic acid or a mixture of an alkyl ammonium salt of the perfluorinated sulphonic acid and the perfluorinated sulphonic acid in an amount being effective to liquefy the residue at ambient temperature; (b) contacting the liquefied residue with water at conditions to obtaining an aqueous extract containing the perfluorinated sulphonic acid and/or the alkyl ammonium salt of the perfluorinated acid into water; and (c) separating water from the aqueous extract to recover the perfluorinated sulphonic acid or the mixture of the acid and the ammonium salt.
    Type: Application
    Filed: May 15, 2002
    Publication date: January 2, 2003
    Inventors: Karsten Laurents, Ole Stahl
  • Process for the preparation of mono alkyl aromatic compounds
    Publication number: 20020045788
    Abstract: Process for the mono alkylation of a hydrocarbon substrate containing aromatic hydrocarbon compounds comprising contacting the aromatic substrate with an alkylating agent consisting of a mixture of olefinic compounds and poly-alkylated aromatic compounds in presence of a fluorinated sulphonic acid.
    Type: Application
    Filed: August 20, 2001
    Publication date: April 18, 2002
    Applicant: Haldor Topsoe A/S
    Inventors: Sven I. Hommeltoft, Karsten Laurents
  • Process for the removal of acid compounds from a hydrocarbon stream
    Patent number: 6123836
    Abstract: Process for the removal of acid compounds contained in a hydrocarbon process stream by passing the process stream through a fixed bed of an adsorption material at conditions where the acid compounds adsorb on the material and withdrawing a purified hydrocarbon process stream, wherein water has been adsorbed on the material prior to contact with the hydrocarbon process stream.
    Type: Grant
    Filed: July 2, 1998
    Date of Patent: September 26, 2000
    Assignee: Haldor Topsoe A/S
    Inventors: Sven Ivar Hommeltoft, Karsten Laurents
  • Removal of alkyl halides from hydrocarbon stream
    Patent number: 6043404
    Abstract: A process for the removal of alkyl halides from a liquid hydrocarbon substrate by reaction of the halides with an isoalkane and/or aromatic hydrocarbons in the presence of an acid catalyst supported on a solid support material.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: March 28, 2000
    Assignee: Haldor Topsoe A/S
    Inventors: Sven Ivar Hommeltoft, Karsten Laurents, Annemarie Bauer