Patents by Inventor Martin Mechelhoff

Martin Mechelhoff 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).

  • Method for the production of a filtration membrane having a mean molecular weight cut-off of < 1000 g/mol
    Patent number: 10239024
    Abstract: The invention relates to a process for preparing a filtration membrane having an average molecular out-off of <1000 g/mol.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: March 26, 2019
    Assignee: LANXESS Deutschland GmbH
    Inventors: Martin Mechelhoff, Patrizia Marchetti, Andrew Livingston, Zedda Karina
  • METHOD FOR THE PRODUCTION OF A FILTRATION MEMBRANE HAVING A MEAN MOLECULAR WEIGHT CUT-OFF OF <1000 G/MOL
    Publication number: 20170095777
    Abstract: The invention relates to a process for preparing a filtration membrane having an average molecular out-off of <1000 g/mol.
    Type: Application
    Filed: May 21, 2015
    Publication date: April 6, 2017
    Inventors: Martin MECHELHOFF, Patrizia MARCHETTI, Andrew LIVINGSTON, Zedda KARINA
  • Separation of isomeric menthol compounds
    Patent number: 9024079
    Abstract: The invention relates to a process for rectificative separation of compositions of matter containing diastereomers of 2-isopropyl-5-methylcyclohexanol by using ionic liquids as extractants.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: May 5, 2015
    Assignee: LANXESS Deutschland GmbH
    Inventors: Reinhold Brink, Lutz Heuer, Sven Kuhlmann, Martin Mechelhoff, Oliver Pfohl
  • NANOFILTRATION MEMBRANE
    Publication number: 20140175013
    Abstract: The invention relates to a nanofiltration membrane having a porous support membrane, the surface of the support membrane being coated with polymer particles which are prepared by emulsion polymerization and which have an average particle diameter of less than 70 nm, preferably between 30-60 nm, more preferably between 40-50 nm.
    Type: Application
    Filed: February 9, 2012
    Publication date: June 26, 2014
    Applicant: LANXESS Deutschland GmbH
    Inventors: Martin Mechelhoff, Thomas Fruh, Christopher Kohl
  • PROCESS FOR THE PREPARATION OF MENTHOL
    Publication number: 20140066665
    Abstract: The invention relates to a process for the preparation of 2-isopropyl-5-methylcyclohexanol (D,L-menthol) via the hydrogenation of thymol to menthone and subsequent further hydrogenation to give D,L-menthol.
    Type: Application
    Filed: August 29, 2013
    Publication date: March 6, 2014
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Martin MECHELHOFF, Claus DREISBACH, Joerg-Dietrich JENTSCH, Lutz HEUER, Peter WASSERSCHEID, Anne RITTSTEIGER
  • PROCESS FOR THE PREPARATION OF MENTHOL
    Publication number: 20140066664
    Abstract: The invention relates to a process for the preparation of 2-isopropyl-5-methylcyclohexanol (menthol) via the hydrogenation of thymol to neomenthol and the subsequent isomerization to give D/L (+/?)-menthol.
    Type: Application
    Filed: August 29, 2013
    Publication date: March 6, 2014
    Applicant: LANXESS Deutschland GmbH
    Inventors: Martin MECHELHOFF, Claus DREISBACH, Joerg-Dietrich JENTSCH, Lutz HEUER, Peter WASSERSCHEID, Anne RITTSTEIGER
  • Separation of isomeric menthol compounds
    Publication number: 20140018580
    Abstract: The invention relates to a process for rectificative separation of compositions of matter containing diastereomers of 2-isopropyl-5-methylcyclohexanol by using ionic liquids as extractants.
    Type: Application
    Filed: August 27, 2012
    Publication date: January 16, 2014
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Reinhold Brink, Lutz Heuer, Sven Kuhlmann, Martin Mechelhoff
  • ISOMERISATION CATALYST
    Publication number: 20140012046
    Abstract: The present invention relates to a process for preparing menthol isomers by selective rearrangement of stereoisomers of menthol or mixtures thereof in the presence of ruthenium-containing supported catalysts doped with or comprising alkaline earth metal alkoxides, and to the catalysts themselves.
    Type: Application
    Filed: July 22, 2011
    Publication date: January 9, 2014
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Lutz Heuer, Eberhard Zirngiebl, Martin Mechelhoff