Patents by Inventor Gesa Paradies

Gesa Paradies 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 1,4-Sorbitan in Aqueous Medium
    Publication number: 20220064135
    Abstract: The invention discloses a method for preparation of 1,4-sorbitan by dehydration of D-sorbitol in aqueous medium, wherein one equivalent of water is removed and a cyclization occurs, followed by a treatment with ethanol and isopropanol.
    Type: Application
    Filed: January 16, 2020
    Publication date: March 3, 2022
    Inventors: Jieping Wei, Gesa Paradies, Benjamin Wyler, Dieter Scherer, Yanling Yang, Xiaolong Zhang, Weicheng Jiang, Reta Zhu
  • Methods for decolorizing compositions comprising betaines
    Patent number: 9550726
    Abstract: The invention relates to a process for decolorizing a composition comprising a betaine comprising the steps of (a) providing a solution of the composition in an organic solvent, (b) contacting the solution with a decolorant, wherein the decolorant is a polar solid decolorant. The invention also relates to uses of ion exchange materials and decolorized solutions and compositions obtainable by the inventive process.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: January 24, 2017
    Assignee: LONZA LTD.
    Inventors: Thomas Büchner, Gesa Paradies, Justin Yang
  • METHODS FOR DECOLORIZING COMPOSITIONS COMPRISING BETAINES
    Publication number: 20150251989
    Abstract: The invention relates to a process for decolorizing a composition comprising a betaine comprising the steps of (a) providing a solution of the composition in an organic solvent, (b) contacting the solution with a decolorant, wherein the decolorant is a polar solid decolorant. The invention also relates to uses of ion exchange materials and decolorized solutions and compositions obtainable by the inventive process.
    Type: Application
    Filed: November 13, 2013
    Publication date: September 10, 2015
    Applicant: Lonza Ltd
    Inventors: Thomas Büchner, Gesa Paradies, Justin Yang
  • Methods for the production of L-carnitine
    Patent number: 8604237
    Abstract: Subject of the invention is a method for the production of L-carnitine, comprising the steps of (a) providing a solution comprising at least 5% (w/w) carnitine in a first solvent, wherein the carnitine is a mixture of D- and L-carnitine, (b) optionally seeding the solution with L-carnitine crystals, (c) adding an second solvent, in which the L-carnitine is not soluble or has a low solubility, (d) isolating crystals comprising L-carnitine.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: December 10, 2013
    Assignee: Lonza Ltd
    Inventors: Thomas Büchner, Gesa Paradies
  • Process for he production of organic dithiopyrophosphates
    Patent number: 8324418
    Abstract: Organic dithiopyrophosphates of formula wherein R1, R2, R3, R4 and R5 independently are hydrogen, C1-4 alkyl, chloromethyl or bromomethyl, are prepared in a two-step process from the corresponding 1,3-diols and thiophosphoryl chloride, using 3-methylpyridine both as solvent and as base.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: December 4, 2012
    Assignee: Lonza Ltd.
    Inventors: Gesa Paradies, Thomas Riedel, Christian Schnider
  • Process for the preparation of betaines
    Patent number: 8168823
    Abstract: Betaines of formula R3N+-Q-COO? (I), wherein R is C1-4 alkyl and Q is C1-4 alkanediyl, optionally substituted with hydroxy, are prepared in one step by adding an ?-halocarboxylate of formula X-Q-COOR? (II), wherein Q is as defined above, R? is Cl1-4 alkyl and X is chlorine, bromine or iodine, to an aqueous solution containing a tertiary amine of formula R3N (III), Wherein R is as defined above and a base selected from alkali hydroxides and alkaline earth hydroxides. The process is particularly suited to the production of L-carnitine.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: May 1, 2012
    Assignee: Lonza Ltd
    Inventors: Gesa Paradies, Markus Bicker, Anton Zenklusen, Dario Veghini
  • Process for the production of organic dithiopyrophosphates
    Publication number: 20110207955
    Abstract: Organic dithiopyrophosphates of formula wherein R1, R2, R3, R4 and R5 independently are hydrogen, C1-4 alkyl, chloromethyl or bromomethyl, are prepared in a two-step process from the corresponding 1,3-diols and thiophosphoryl chloride, using 3-methylpyridine both as solvent and as base.
    Type: Application
    Filed: October 21, 2009
    Publication date: August 25, 2011
    Applicant: LONZA LTD.
    Inventors: Gesa Paradies, Thomas Riedel, Christian Schnider
  • METHODS FOR THE PRODUCTION OF L-CARNITINE
    Publication number: 20110118503
    Abstract: Subject of the invention is a method for the production of L-carnitine, comprising the steps of (a) providing a solution comprising at least 5% (w/w) carnitine in a first solvent, wherein the carnitine is a mixture of D- and L-carnitine, (b) optionally seeding the solution with L-carnitine crystals, (c) adding an second solvent, in which the L-carnitine is not soluble or has a low solubility, (d) isolating crystals comprising L-carnitine.
    Type: Application
    Filed: November 15, 2010
    Publication date: May 19, 2011
    Inventors: Thomas Büchner, Gesa Paradies
  • PROCESS FOR THE PREPARATION OF BETAINES
    Publication number: 20100267986
    Abstract: Betaines of formula R3N+-Q-COO? (I), wherein R is C1-4 alkyl and Q is C1-4 alkanediyl, optionally substituted with hydroxy, are prepared in one step by adding an ?-halocarboxylate of formula X-Q-COOR? (II), wherein Q is as defined above, R? is C11-4 alkyl and X is chlorine, bromine or iodine, to an aqueous solution containing a tertiary amine of formula R3N (III), Wherein R is as defined above and a base selected from alkali hydroxides and alkaline earth hydroxides. The process is particularly suited to the production of L-carnitine.
    Type: Application
    Filed: November 14, 2008
    Publication date: October 21, 2010
    Inventors: Gesa Paradies, Markus Bicker, Anton Zenklusen, Dario Veghini