Patents by Inventor Jan Schütz

Jan Schütz 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).

  • PHOTOOXIDATION OF 2,4,6-TRIMETHYLPHENOL
    Publication number: 20240059650
    Abstract: The present invention relates to the photooxidation of 2,4,6-trimethyl-phenol to yield 4-hydroperoxy-2,4,6-trimethylcyclohexa-2,5-dien-1-one using methylene blue as photosensitizer in a solvent mixture of water and alcohols using light of the high wavelength range of the visible spectrum. This process allows 5 obtaining 4-hydroxy-2,4,6-trimethylcyclohexa-2,5-dien-1-one and 2,3,5-trimethyl-hydroquinone in high yields and selectivity from 2,4,6-trimethylphenol.
    Type: Application
    Filed: December 13, 2021
    Publication date: February 22, 2024
    Inventors: Werner BONRATH, Thomas BUCHHOLZ, Thomas NETSCHER, Jan SCHUETZ, Christof SPARR
  • FORMATION OF P-ALKYLPHENOLS BASED ON INTERMOLECULAR REACTION OF ETHYNE WITH 2-ALKYLFURANS IN THE PRESENCE OF GOLD(I) COMPLEXES
    Publication number: 20230416178
    Abstract: The present invention relates to the synthesis of p-alkylphenols and of 2,6-dimethyl-4-alkyl phenol from 2-alkylfurans with acetylene in the presence of a gold(I) complex as well as to 2,3,6 trimethylhydroquinone.
    Type: Application
    Filed: November 8, 2021
    Publication date: December 28, 2023
    Inventors: Stephan ACKERMANN-MAURER, Werner BONRATH, Ulla LETINOIS, Thomas NETSCHER, Jan SCHUETZ
  • Process for the production of 2-methyl-4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2-butenal
    Patent number: 11370738
    Abstract: The present invention relates to an improved way to produce 2-methyl-4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2-butenal and derivatives thereof.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: June 28, 2022
    Assignee: DSM IP ASSETS B.V.
    Inventor: Jan Schuetz
  • ETHYNYLATION OF POLYUNSATURATED ALDEHYDES AND KETONES
    Publication number: 20210276935
    Abstract: The present invention relates to a catalytic process for the ethynylation of specific polyunsaturated aldehydes and ketones.
    Type: Application
    Filed: May 26, 2021
    Publication date: September 9, 2021
    Inventors: Werner BONRATH, Jan SCHUETZ, Thomas NETSCHER, Bettina WUESTENBERG
  • PROCESS FOR THE PRODUCTION OF 2-METHYL-4-(2,6,6-TRIMETHYL-1-CYCLOHEXEN-1-YL)-2-BUTENAL
    Publication number: 20210130277
    Abstract: The present invention relates to an improved way to produce 2-methyl-4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2-butenal and derivatives thereof.
    Type: Application
    Filed: April 8, 2019
    Publication date: May 6, 2021
    Inventor: Jan SCHUETZ
  • Crystallization of 25-hydroxy-7-dehydrocholesterol
    Patent number: 10316055
    Abstract: The present invention relates to a method of purification of compound of formula (I) which comprises the step of crystallization of compound of formula (I) from a composition comprising the compound of formula (I) and the compound of formula (II) and a specific solvent system containing ethanol, 1-propanol, 2-propanol, 2-methyl-1-propanol, 1-butanol or 2-butanol.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: June 11, 2019
    Assignee: DSM IP ASSETS B.V.
    Inventors: Jan Schuetz, Ralph Waechter
  • CRYSTALLIZATION OF 25-HYDROXY-7-DEHYDROCHOLESTEROL
    Publication number: 20180327442
    Abstract: The present invention relates to a method of purification of compound of formula (I) which comprises the step of crystallization of compound of formula (I) from a composition comprising the compound of formula (I) and the compound of formula (II) and a specific solvent system containing ethanol, 1-propanol, 2-propanol, 2-methyl-1-propanol, 1-butanol or 2-butanol.
    Type: Application
    Filed: November 28, 2016
    Publication date: November 15, 2018
    Inventors: Jan SCHUETZ, Ralph WAECHTER
  • Method for producing specific ?, ?-unsaturated aldehydes
    Patent number: 10029970
    Abstract: The present invention relates to an improved method for producing specific ?, ?-unsaturated aldehydes.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: July 24, 2018
    Assignee: DSM IP ASSETS B.V.
    Inventors: Werner Bonrath, Thomas Netscher, Jan Schuetz, Bettina Wuestenberg
  • Process of production of 7,8-dihydro-C15-aldehyde
    Patent number: 9957228
    Abstract: The present invention relates to a new method to produce 7,8-dihydro-C15-aldehyde.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: May 1, 2018
    Assignee: DSM IP ASSETS B.V.
    Inventors: Werner Bonrath, Jan Schuetz, Thomas Netscher, Bettina Wuestenberg
  • Method for producing specific ?,?-unsaturated aldehydes by rearrangement process
    Patent number: 9908847
    Abstract: The present invention relates to an improved method for producing specific ?,?-unsaturated aldehydes.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: March 6, 2018
    Assignee: DSM IP ASSETS B.V.
    Inventors: Werner Bonrath, Jan Schuetz, Thomas Netscher, Bettina Wuestenberg
  • PROCESS OF PRODUCTION OF 7,8-DIHYDRO-C15-ALDEHYDE
    Publication number: 20170313654
    Abstract: The present invention relates to a new method to produce 7,8-dihydro-C15-aldehyde.
    Type: Application
    Filed: October 15, 2015
    Publication date: November 2, 2017
    Inventors: Werner BONRATH, Jan SCHUETZ, Thomas NETSCHER, Bettina WUESTENBERG
  • METHOD FOR PRODUCING SPECIFIC ALPHA,BETA-UNSATURATED ALDEHYDES BY REARRANGEMENT PROCESS
    Publication number: 20170313655
    Abstract: The present invention relates to an improved method for producing specific ?,?-unsaturated aldehydes.
    Type: Application
    Filed: October 15, 2015
    Publication date: November 2, 2017
    Inventors: Werner BONRATH, Jan SCHUETZ, Thomas NETSCHER, Bettina WUESTENBERG
  • METHOD FOR PRODUCING SPECIFIC ALPHA, BETA-UNSATURATED ALDEHYDES
    Publication number: 20170305827
    Abstract: The present invention relates to an improved method for producing specific ?, ?-unsaturated aldehydes.
    Type: Application
    Filed: October 15, 2015
    Publication date: October 26, 2017
    Inventors: Werner BONRATH, Thomas NETSCHER, Jan SCHUETZ, Bettina WUESTENBERG
  • ETHYNYLATION OF POLYUNSATURATED ALDEHYDES AND KETONES
    Publication number: 20170297984
    Abstract: The present invention relates to a catalytic process for the ethynylation of specific poly-unsaturated aldehydes and ketones.
    Type: Application
    Filed: October 15, 2015
    Publication date: October 19, 2017
    Inventors: Werner BONRATH, Jan SCHUETZ, Thomas NETSCHER, Bettina WUESTENBERG
  • Process for the production of 4-alkanoyloxy-2-methylbutanoic acid
    Patent number: 9447017
    Abstract: The present invention relates to an improved process for the production of 4-alkanoyloxy-2-methylbutanoic acid, as well as to the use of such compounds in organic syntheses, especially in processes forming intermediates (building blocks) for the synthesis of organic compounds comprising isoprene (isoterpene) units, such as ?-carotene or other carotenoids (e.g. canthaxanthin, zeaxanthin or astaxanthin) or as vitamin E or vitamin A as well as other structurally similar compounds.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: September 20, 2016
    Assignee: DSM IP ASSETS B.V.
    Inventors: Werner Bonrath, Jan Schütz, Bettina Wüstenberg, Thomas Netscher
  • Intermediates for the vitamin A and ?-carotene synthesis
    Patent number: 9309194
    Abstract: The present invention relates to compounds of formula (I) wherein R1 signifies a C1-C15 alkyl moiety or a C2 to C18 alkenyl moiety, to their process of production as well as to their use in organic synthesis, especially as intermediates (building blocks) in the synthesis of vitamin A or ?-carotene or derivatives thereof, or other carotenoids, e.g. canthaxanthin, astaxanthin or zeaxanthin, preferably vitamin A.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: April 12, 2016
    Assignee: DSM IP ASSETS B.V.
    Inventors: Werner Bonrath, Thomas Netscher, Jan Schütz, Bettina Wüstenberg
  • Acid chloride
    Patent number: 9227907
    Abstract: The present invention relates to new organic compounds, to their synthesis as well as to their use in organic synthesis, especially in processes forming intermediates (building blocks) for the synthesis of vitamin A or ?-carotene or other carotenoids.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: January 5, 2016
    Assignee: DSM IP ASSETS B.V.
    Inventors: Werner Bonrath, Thomas Netscher, Jan Schütz, Bettina Wüstenberg
  • Process for the production of 1,3,3-trimethyl-2-(3-methylpent-2-en-4-ynyl)cyclohex-1-ene
    Patent number: 9067877
    Abstract: The present invention relates to an improved process for the production of 1,3,3-trimethyl-2-(3-methylpent-2-en-4-ynyl)cyclohex-1-ene, highly enriched in the Z-isomer, and the use of such compounds in organic syntheses, especially in processes forming intermediates (building blocks) the synthesis of vitamin A or ?-carotene or other carotenoids, e.g. canthaxanthin, astaxanthin or zeaxanthin.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: June 30, 2015
    Assignee: DSM IP ASSETS B.V.
    Inventors: Werner Bonrath, Thomas Netscher, Jan Schütz, Bettina Wüstenberg
  • Catalytic synthesis of vitamin A intermediate
    Patent number: 9040742
    Abstract: The present invention relates to a process of production of a compound, which is useful as an intermediate (building block) in organic synthesis, especially in the synthesis of vitamin A or ?-carotene and derivatives thereof, e.g. canthaxanthin, astaxanthin or zeaxanthin.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: May 26, 2015
    Assignee: DSM IP ASSETS B.V.
    Inventors: Werner Bonrath, Bettina Wuestenberg, Thomas Netscher, Jan Schuetz
  • NEW INTERMEDIATES FOR THE VITAMIN A AND beta-CAROTENE SYNTHESIS
    Publication number: 20150112091
    Abstract: The present invention relates to compounds of formula (I) wherein R1 signifies a C1-C15 alkyl moiety or a C2 to C18 alkenyl moiety, to their process of production as well as to their use in organic synthesis, especially as intermediates (building blocks) in the synthesis of vitamin A or ?-carotene or derivatives thereof, or other carotenoids, e.g. canthaxanthin, astaxanthin or zeaxanthin, preferably vitamin A.
    Type: Application
    Filed: June 14, 2012
    Publication date: April 23, 2015
    Applicant: DSM IP ASSETS
    Inventors: Werner Bonrath, Thomas Netscher, Jan Schütz, Bettina Wüstenberg