Patents by Inventor Guenther Gottwald

Guenther Gottwald 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 crystallization of 2-(4-N,N-diethyl amino-2-hydroxy-benzoyl)-benzoic acid-n-hexyl ester
    Patent number: 9550727
    Abstract: The present invention relates to a method for the crystallization of n-hexyl 2-(4-N,N-diethylamino-2-hydroxybenzoyl)benzoate, to a method for the production of pourable or flowable particles of crystalline n-hexyl 2-(4-N,N-diethylamino-2-hydroxybenzoyl)-benzoate and to specific pourable or flowable particles of crystalline n-hexyl 2-(4-N,N-diethylamino-2-hydroxybenzoyl)benzoate.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: January 24, 2017
    Assignee: BASF SE
    Inventors: Samantha Champ, Manfred Hetterich, Günther Gottwald
  • Method for the crystallization of 2-(4-N,N-diethyl Amino-2-hydroxy-benzoyl)-benzoic acid-n-hexyl ester
    Publication number: 20140349115
    Abstract: The present invention relates to a method for the crystallization of n-hexyl 2-(4-N,N-diethylamino-2-hydroxybenzoyl)benzoate, to a method for the production of pourable or flowable particles of crystalline n-hexyl 2-(4-N,N-diethylamino-2-hydroxybenzoyl)-benzoate and to specific pourable or flowable particles of crystalline n-hexyl 2-(4-N,N-diethylamino-2-hydroxybenzoyl)benzoate.
    Type: Application
    Filed: August 6, 2014
    Publication date: November 27, 2014
    Applicant: BASF SE
    Inventors: Samantha Champ, Manfred Hetterich, Günther Gottwald
  • Method for the crystallization of 2-(4-N,N-diethyl amino-2-hydroxy benzoyl)-benzoic acid-N-hexyl ester
    Patent number: 8802887
    Abstract: The present invention relates to a method for the crystallization of n-hexyl 2-(4-N,N-diethylamino-2-hydroxybenzoyl)benzoate, to a method for the production of pourable or flowable particles of crystalline n-hexyl 2-(4-N,N-diethylamino-2-hydroxybenzoyl)benzoate and to specific pourable or flowable particles of crystalline n-hexyl 2-(4-N,N-diethylamino-2-hydroxybenzoyl)benzoate.
    Type: Grant
    Filed: April 17, 2008
    Date of Patent: August 12, 2014
    Assignee: BASF SE
    Inventors: Samantha Champ, Manfred Hetterich, Günther Gottwald
  • Method for producing cis-rose oxide
    Patent number: 8546591
    Abstract: The present invention relates to a process for the preparation of cis-2-(2-methylprop-1-enyl)-4-methyltetrahydropyran comprising the catalytic hydrogenation of 2-(2-methylprop-1-enyl)-4-methylenetetrahydropyran in the presence of hydrogen and a heterogeneous catalyst comprising ruthenium on a support and subsequently bringing the compounds obtained in this way into contact with a strongly acidic cation exchanger.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: October 1, 2013
    Assignee: BASF SE
    Inventors: Lucia Koenigsmann, Juergen Schubert, Andreas Walch, Guenther Gottwald, Martin Kamasz, Ekkehard Schwab, Klaus-Peter Pfaff, Michael Slany
  • METHOD FOR PRODUCING CIS-ROSE OXIDE
    Publication number: 20100311988
    Abstract: The present invention relates to a process for the preparation of cis-2-(2-methylprop-1-enyl)-4-methyltetrahydropyran comprising the catalytic hydrogenation of 2-(2-methylprop-1-enyl)-4-methylenetetrahydropyran in the presence of hydrogen and a heterogeneous catalyst comprising ruthenium on a support and subsequently bringing the compounds obtained in this way into contact with a strongly acidic cation exchanger.
    Type: Application
    Filed: December 17, 2008
    Publication date: December 9, 2010
    Applicant: BASF SE
    Inventors: Lucia Koenigsmann, Juergen Schubert, Andreas Walch, Guenther Gottwald, Martin Kamasz, Ekkehard Schwab, Klaus-Peter Pfaff, Michael Slany
  • METHOD FOR PRODUCING BISABOLOL WHICH IS FARNESOL FREE OR IS LOW IN FARNESOL
    Publication number: 20100222606
    Abstract: The present invention relates to a method of producing pure or enriched bisabolol by separating substance mixtures comprising bisabolol and farnesol by selective esterification of farnesol and subsequent distillative separation. The invention relates specifically to a method as specified above comprising the selective transesterification of mixtures comprising formyl-bisabolol and formyl-farnesol and subsequent distillative separation. The present invention furthermore relates to a method of producing farnesol esters.
    Type: Application
    Filed: January 12, 2007
    Publication date: September 2, 2010
    Applicant: BASF SE
    Inventors: Hansgeorg Ernst, Klaus-Peter Pfaff, Karl Beck, Jürgen Schubert, Günther Gottwald, Wolfgang Krause
  • METHOD FOR THE CRYSTALLIZATION OF 2-(4-N,N-DIETHYL AMINO-2-HYDROXY BENZOYL)-BENZOIC ACID-N-HEXYL ESTER
    Publication number: 20100137629
    Abstract: The present invention relates to a method for the crystallization of n-hexyl 2-(4-N,N-diethylamino-2-hydroxybenzoyl)benzoate, to a method for the production of pourable or flowable particles of crystalline n-hexyl 2-(4-N,N-diethylamino-2-hydroxybenzoyl)benzoate and to specific pourable or flowable particles of crystalline n-hexyl 2-(4-N,N-diethylamino-2-hydroxybenzoyl)benzoate.
    Type: Application
    Filed: April 17, 2008
    Publication date: June 3, 2010
    Applicant: BASF SE
    Inventors: Samantha Champ, Manfred Hetterich, Günther Gottwald
  • Method for producing ?-bisabolol from farnesol
    Patent number: 7622617
    Abstract: The present invention relates to a process for preparing ?-bisabolol, comprising the reaction of farnesol in the presence of a ketone, of a sulfonic acid and of a further strong acid.
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: November 24, 2009
    Assignee: BASF SE
    Inventors: Klemens Massonne, Klaus-Peter Pfaff, Juergen Schubert, Guenther Gottwald
  • Method for Producing Alpha-Bisabolol from Farnesol
    Publication number: 20080269530
    Abstract: The present invention relates to a process for preparing ?-bisabolol, comprising the reaction of farnesol in the presence of a ketone, of a sulfonic acid and of a further strong acid.
    Type: Application
    Filed: October 26, 2006
    Publication date: October 30, 2008
    Applicant: BASF SE
    Inventors: Klemens Massonne, Klaus-Peter Pfaff, Juergen Schubert, Guenther Gottwald