Patents by Inventor Cornelia Zur Taeschler

Cornelia Zur Taeschler 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 preparation of cyano compounds of the 13th group with a lewis acid
    Patent number: 9458180
    Abstract: The invention discloses a method for preparation of cyano compounds of the 13th group of the periodic table with 1, 2, 3 or 4 cyano residues, represented by formula (I): [Catn+][Z1F4-m(CN)m)?]n by a reaction of [(Z1F4)?] with trimethylsilylcyanide in the presence of a Lewis acid and in the presence of the cation Catn+; Cat2+ is a cation, Z1 is B, Al, Ga, In or Tl, m is 1, 2, 3 or 4 and n is 1, 2, 3 or 4.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: October 4, 2016
    Assignee: Lonza Ltd.
    Inventors: Katharina Sievert, Axel Schulz, Jorg Harloff, Stefan Ellinger, Christoph Taeschler, Cornelia Zur Taeschler
  • Method for Preparation of Cyano Compounds of the 13th Group with a Lewis Acid
    Publication number: 20160229874
    Abstract: The invention discloses a method for preparation of cyano compounds of the 13th group of the periodic table with 1, 2, 3 or 4 cyano residues, represented by formula (I): [Catn+][(Z1F4-m(CN)m)?]n by a reaction of [(Z1F4)?] with trimethylsilylcyanide in the presence of a Lewis acid and in the presence of the cation Catn+; Catn+ is a cation, Z1 is B, Al, Ga, In or Tl, m is 1, 2, 3 or 4 and n is 1, 2, 3 or 4.
    Type: Application
    Filed: September 23, 2014
    Publication date: August 11, 2016
    Inventors: Katharina Sievert, Axel Schulz, Jorg Harloff, Stefan Ellinger, Christoph Taeschler, Cornelia Zur Taeschler
  • Process for the selective meta-chlorination of alkylanilines
    Patent number: 9193667
    Abstract: A process for the chlorination of alkylanilines is provided allowing a highly selective chlorination in the meta-position of the aromatic ring. This is achieved by reacting a mixture comprising the alkylaniline and sulfuric acid with chlorine. This process allows a meta-chlorination with a selectivity of more than 90%.
    Type: Grant
    Filed: August 16, 2011
    Date of Patent: November 24, 2015
    Assignee: LONZA LTD.
    Inventors: Nikolaus Bieler, Stefan Ellinger, Martina Furrer, Viktor Ladnak, Constanze Müller, Leo Schmid, Cornelia Zur Täschler
  • PROCESS FOR THE SELECTIVE META-CHLORINATION OF ALKYLANILINES
    Publication number: 20130338400
    Abstract: A process for the chlorination of alkylanilines is provided allowing a highly selective chlorination in the meta-position of the aromatic ring. This is achieved by reacting a mixture comprising the alkylaniline and sulfuric acid with chlorine. This process allows a meta-chlorination with a selectivity of more than 90%.
    Type: Application
    Filed: August 16, 2011
    Publication date: December 19, 2013
    Applicant: Lonza Ltd.
    Inventors: Nikolaus Bieler, Stefan Ellinger, Martina Furrer, Viktor Ladnak, Constanze Müller, Leo Schmid, Cornelia Zur Täschler
  • PROCESS FOR THE PREPARATION OF ALKYL 3,3-DIALKOXYPROPIONATES
    Publication number: 20100217031
    Abstract: The present invention relates to a continuous process for preparing alkyl 3,3-dialkoxy-propionates of the formula (RO)2CHCH2CO2R, wherein R is C1-6 alkyl, by reacting ketene with an ortho formate of formula (RO)3CH in the presence of an acidic catalyst, characterized in that the reaction is carried out in a loop reactor.
    Type: Application
    Filed: October 29, 2008
    Publication date: August 26, 2010
    Inventors: Wolfgang Wenger, Cornelia Zur Täschler, Daniel Zollinger