Patents by Inventor Jocelyn Fischesser

Jocelyn Fischesser 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).

  • Process for the manufacture of 2,6-dimethyl-5-hepten-1-al
    Patent number: 10752569
    Abstract: The present invention relates to an improved process for the manufacture of 2,6-dimethyl-5-hepten-1-al.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: August 25, 2020
    Assignee: DSM IP ASSETS B.V.
    Inventors: Raphael Beumer, Werner Bonrath, Frank Eisele, Jocelyn Fischesser, Christof Wehrli
  • PROCESS FOR THE MANUFACTURE OF 2,6-DIMETHYL-5-HEPTEN-1-AL
    Publication number: 20190308923
    Abstract: The present invention relates to an improved process for the manufacture of 2,6-dimethyl-5-hepten-1-al.
    Type: Application
    Filed: October 12, 2017
    Publication date: October 10, 2019
    Inventors: Raphael BEUMER, Werner BONRATH, Frank EISELE, Jocelyn FISCHESSER, Christof WEHRLI
  • Process for the manufacture of a precursor of vitamin B1
    Patent number: 9108925
    Abstract: The present invention relates to a novel process for the manufacture of Grewe-diamine comprising the following step: hydrolyzing a compound of formula (II), wherein R is hydrogen or straight- or branched chain C1-4 alkyl, with an aqueous alkali or alkaline-earth metal hydroxide solution, characterized in that the hydrolysis is carried out in the presence of an organic solvent.
    Type: Grant
    Filed: January 24, 2006
    Date of Patent: August 18, 2015
    Assignee: DSM IP ASSETS B.V.
    Inventors: Werner Bonrath, Jocelyn Fischesser, Lisa Giraudi, Reinhard Karge
  • Process for the manufacture of 2-pentyn-1-ol
    Patent number: 9045404
    Abstract: The present invention is directed to a process for the manufacture of 2-pentyn-1-ol starting from 2-propyn-1-ol via the following intermediates (I), (II) wherein R1 is H or linear C1-6 alkyl, R2 is linear C1-6 alkyl or branched C3-6 alkyl and R3 is linear C1-6 alkyl, as well as to the intermediates themselves.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: June 2, 2015
    Assignee: DSM IP ASSETS B.V.
    Inventors: Werner Bonrath, Francesco Pace, Jocelyn Fischesser, Konrad Witzgall
  • Process for 4-methyloxazole-5-carboxamide
    Patent number: 8916715
    Abstract: A process for the preparation of 4-methyl-oxazole-5-carboxamide, an intermediate in the synthesis of pyridoxine, by reacting lower alkyl 4-methyl-oxazole-5-carboxy-late with a molar excess of anhydrous, liquid ammonia.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: December 23, 2014
    Assignee: DSM IP Assets B.V.
    Inventors: Werner Bonrath, Jocelyn Fischesser, Hongyan Shen
  • PROCESS FOR 4-METHYLOXAZOLE-5-CARBOXAMIDE
    Publication number: 20140206880
    Abstract: A process for the preparation of 4-methyl-oxazole-5-carboxamide, an intermediate in the synthesis of pyridoxine, by reacting lower alkyl 4-methyl-oxazole-5-carboxy-late with a molar excess of anhydrous, liquid ammonia.
    Type: Application
    Filed: May 31, 2012
    Publication date: July 24, 2014
    Applicant: DSM IP ASSETS B.V.
    Inventors: Werner Bonrath, Jocelyn Fischesser, Hongyan Shen
  • Reaction with a gold catalyst
    Patent number: 8383837
    Abstract: The invention relates to a process for the catalytic conversion of a carbohydrate, an alcohol, an aldehyde or a polyhydroxy compound in the presence of a catalyst containing gold in a solvent.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: February 26, 2013
    Assignee: DSM IP Assets B.V.
    Inventors: Werner Bonrath, Jocelyn Fischesser
  • PROCESS FOR THE MANUFACTURE OF 2-PENTYN-1-OL
    Publication number: 20120197046
    Abstract: The present invention is directed to a process for the manufacture of 2-pentyn-1-ol starting from 2-propyn-1-ol via the following intermediates (I), (II) wherein R1 is H or linear C1-6 alkyl, R2 is linear C1-6 alkyl or branched C3-6 alkyl and R3 is linear C1-6 alkyl, as well as to the intermediates themselves.
    Type: Application
    Filed: August 5, 2010
    Publication date: August 2, 2012
    Inventors: Werner Bonrath, Francesco Pace, Jocelyn Fischesser, Konrad Witzgall
  • NOVEL REACTION WITH A GOLD CATALYST
    Publication number: 20100217017
    Abstract: The invention relates to a process for the catalytic conversion of a carbohydrate, an alcohol, an aldehyde or a poly-hydroxy compound in the presence of a catalyst containing gold in a solvent.
    Type: Application
    Filed: June 5, 2008
    Publication date: August 26, 2010
    Inventors: Werner Bonrath, Jocelyn Fischesser
  • Manufacture of vitamin B
    Patent number: 7495101
    Abstract: A process for manufacturing a 3-unsubstituted, 3-monosubstituted or 3,3-disubstituted 9-acyloxy-1,5-dihydro-8-methylpyrido[3,4-e] [1,3]dioxepin (I) and optionally for manufacturing pyridoxine involves performing an addition reaction between a 4-methyl-5-alkoxy-oxazole (II) and a 2-unsubstituted, 2-monosubstituted or 2,2-disubstituted 4,7-dihydro-(1,3)-dioxepin (III) in the substantial absence of a solvent and a catalyst to give a product mixture consisting essentially of the appropriate Diels-Alder adduct (IV) in a major proportion and the appropriate 3-unsubstituted, 3-monosubstituted or 3,3-disubstituted 1,5-dihydro-8-methylpyrido[3,4-e] [1,3]dioxepin 9-ol (V) in a minor proportion, removal of a substantial proportion of the unreacted oxazole and dioxapin starting materials from the product mixture by distillation under reduced pressure, addition of a substantially anhydrous organic acid to said product mixture and rearrangement of the Diels-Alder adduct IV to further V in the presence of said substantially
    Type: Grant
    Filed: November 9, 2004
    Date of Patent: February 24, 2009
    Assignee: DSM IP Assets B.V.
    Inventors: Jocelyn Fischesser, Helmut Fritsch, Andrew George Gum, Reinhard Karge, Ralf Keuper
  • Process For the Manufacture of a Precursor of Vitamin B1
    Publication number: 20080242863
    Abstract: The present invention relates to a novel process for the manufacture of Grewe-diamine comprising the following step: hydrolyzing a compound of formula (II), wherein R is hydrogen or straight- or branched chain C1-4 alkyl, with an aqueous alkali or alkaline-earth metal hydroxide solution, characterized in that the hydrolysis is carried out in the presence of an organic solvent.
    Type: Application
    Filed: January 24, 2006
    Publication date: October 2, 2008
    Inventors: Werner Bonrath, Jocelyn Fischesser, Lisa Giraudi, Reinhard Karge
  • Manufacture of vitamin b6
    Publication number: 20070072254
    Abstract: A process for manufacturing a 3-unsubstituted, 3-monosubstituted or 3,3-disubstituted 9-acyloxy-1,5-dihydro-8-methylpyrido[3,4-e] [1,3]dioxepin (I) and optionally for manufacturing pyridoxine involves performing an addition reaction between a 4-methyl-5-alkoxy-oxazole (II) and a 2-unsubstituted, 2-monosubstituted or 2,2-disubstituted 4,7-dihydro-(1,3)-dioxepin (III) in the substantial absence of a solvent and a catalyst to give a product mixture consisting essentially of the appropriate Diels-Alder adduct (IV) in a major proportion and the appropriate 3-unsubstituted, 3-monosubstituted or 3,3-disubstituted 1,5-dihydro-8-methylpyrido[3,4-e] [1,3]dioxepin 9-ol (V) in a minor proportion, removal of a substantial proportion of the unreacted oxazole and dioxapin starting materials from the product mixture by distillation under reduced pressure, addition of a substantially anhydrous organic acid to said product mixture and rearrangement of the Diels-Alder adduct IV to further V in the presence of said substantially
    Type: Application
    Filed: November 9, 2004
    Publication date: March 29, 2007
    Inventors: Jocelyn Fischesser, Helmut Fritsch, Andrew Gum, Reinhard Karge, Ralf Keuper