Patents by Inventor Michael Bersier

Michael Bersier 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 5-fluoro-2-methyl-3-nitrobenzoic acid and its methyl ester
    Patent number: 11001552
    Abstract: The invention discloses a method for preparation of 5-fluoro-2-methyl-3-nitrobenzoic acid and its methyl ester by conversion of 5-fluoro-2-methylbenzoic acid with fuming nitric acid and oleum and subsequent conversion with methanol.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: May 11, 2021
    Assignee: LONZA LTD
    Inventors: Michael Bersier, Anna Kulesza, Paul Hanselmann, Christof Aellig, Sarah Filliger
  • METHOD FOR PREPARATION OF 5-FLUORO-2-METHYL-3-NITROBENZOIC ACID AND ITS METHYL ESTER
    Publication number: 20210078933
    Abstract: The invention discloses a method for preparation of 5-fluoro-2-methyl-3-nitrobenzoic acid and its methyl ester by conversion of 5-fluoro-2-methylbenzoic acid with fuming nitric acid and oleum and subsequent conversion with methanol.
    Type: Application
    Filed: July 16, 2018
    Publication date: March 18, 2021
    Inventors: Michael BERSIER, Anna KULESZA, Paul HANSELMANN, Christof AELLIG, Sarah FILLIGER
  • METHOD FOR PREPARATION OF CHLORINATED S-PROPYLTHIOBARBITURIC ACID
    Publication number: 20200207722
    Abstract: The invention discloses a method for preparation of 4,6-dichloro-5-nitro-2-(propylthio)pyrimidine by conversion of 5-nitro-2-propylthiopyrimidine-4,6-diol with phosgene in the presence of DMF.
    Type: Application
    Filed: July 16, 2018
    Publication date: July 2, 2020
    Inventors: Michael BERSIER, Paul HANSELMANN, Candid STOFFEL
  • Method for preparation of chlorinated s-propylthiobarbituric acid
    Patent number: 10689350
    Abstract: The invention discloses a method for preparation of 4,6-dichloro-5-nitro-2-(propylthio)pyrimidine by conversion of 5-nitro-2-propylthiopyrimidine-4,6-diol with phosgene in the presence of DMF.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: June 23, 2020
    Assignee: LONZA LTD
    Inventors: Michael Bersier, Paul Hanselmann, Candid Stoffel
  • METHOD FOR PREPARATION OF DIFLUOROMETHYLORNITHINE
    Publication number: 20200148627
    Abstract: The invention discloses a method for preparation of protected difluoromethylornithine by a difluoromethylation of dibenzaldimine ornithine ester using CHF3 and LiHMDS (lithium bis(trimethylsilyl)amide), which can be converted to a salt of unprotected difluoromethylornithine by a subsequent deprotection under acidic conditions in the presence of water.
    Type: Application
    Filed: September 24, 2018
    Publication date: May 14, 2020
    Inventors: Bernhard GUTMANN, Michael BERSIER, Paul HANSELMANN, Christian Oliver KAPPE, Manuel KOECKINGER, Christopher HONE
  • Method for preparation of bis(fluorosulfonyl)-imide
    Patent number: 10246409
    Abstract: The invention relates to a method for the preparation of bis(fluorosulfonyl)-imide and its derivatives at elevated temperature.
    Type: Grant
    Filed: May 4, 2016
    Date of Patent: April 2, 2019
    Assignee: Lonza Ltd
    Inventors: Christian Schnider, Anna-Christina Hormes, Andreas Klein, Michael Bersier, Philipp Studer, Stefan Tille, Thomas Gruetzner
  • METHOD FOR THE PREPARATION OF BIS(FLUOROSULFONYL)-IMIDE AND OF ITS SALTS
    Publication number: 20180362343
    Abstract: The invention relates to a method for the preparation of bis(fluorosulfonyl)-imide, the method starts from bis(chlorosulfonyl)-imide or its respective derivatives, which is reacted with HF in the presence of chlorosulfonyl isocyanate, and uses a certain extraction step for extraction of bis(fluorosulfonyl)-imide from an aqueous solution; the invention is also useful for the preparation of certain salts of bis(fluorosulfonyl)-imide and its derivatives.
    Type: Application
    Filed: October 26, 2016
    Publication date: December 20, 2018
    Inventors: Anna-Christina HORMES, Andreas KLEIN, Christian SCHNIDER, Thomas GRUETZNER, Michael BERSIER, Philipp STUDER, Stefan TILLE, Desirée LORENZ, Hilke-Marie LORENZ, Hans HASSE, Erik VON HARBOU, Johannes NEUHAUS
  • METHOD FOR PREPARATION OF BIS(FLUOROSULFONYL)-IMIDE
    Publication number: 20180141901
    Abstract: The invention relates to a method for the preparation of bis(fluorosulfonyl)-imide and its derivatives at elevated temperature.
    Type: Application
    Filed: May 4, 2016
    Publication date: May 24, 2018
    Inventors: Christian Schnider, Anna-Christina Hormes, Andreas Klein, Michael Bersier, Philipp Studer, Stefan Tille, Thomas Gruetzner
  • METHOD FOR PREPARATION OF 6-TRIFLUOROMETHYLPYRIDINE-3-CARBOXYLIC ACID DERIVATIVES FROM TRIFLUOROACETYLACETIC ACID
    Publication number: 20160368876
    Abstract: The invention discloses a method for the preparation of 6-trifluoromethylpyridine-3-carboxylic acid derivatives (I) from trifluoroacetylacetic acid (II) and orthoesters (III), and their use for the preparation of pharmaceutical, chemical or agro-chemical products.
    Type: Application
    Filed: July 17, 2014
    Publication date: December 22, 2016
    Inventors: Florencio Zaragoza Doerwald, Michael Bersier, Christoph Taeschler
  • Method for preparation of 6-trifluoromethylpyridine-3-carboxylic acid derivatives from trifluoroacetylacetic acid
    Patent number: 9522885
    Abstract: The invention discloses a method for the preparation of 6-trifluoromethylpyridine-3-carboxylic acid derivatives (I) from trifluoroacetylacetic acid (II) and orthoesters (III), and their use for the preparation of pharmaceutical, chemical or agro-chemical products.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: December 20, 2016
    Assignee: Lonza Ltd
    Inventors: Florencio Zaragoza Doerwald, Michael Bersier, Christoph Taeschler