Patents by Inventor Ralf Meier
Ralf Meier 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).
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Patent number: 11370752Abstract: The invention relates to a method for producing cyclododecanone (CDON). During the production, contaminated cyclododecane (CDAN) is produced. This can be separated from CDON by distillation (CDAN-containing fraction). The separation of CDAN and impurities such as 13-oxabicyclo [7.3.1]tridecane occurs by crystallizing out CDAN from the CDAN-containing fraction.Type: GrantFiled: January 31, 2018Date of Patent: June 28, 2022Assignee: Evonik Operations GmbHInventors: Luca Cameretti, Jan Caßens, Ralf Meier
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Patent number: 11034640Abstract: A method is useful for the continuous production of ketones from a compound with at least one epoxide group in at least one fixed bed reactor. A catalyst composition is used with at least one noble metal and at least one metal oxide. To reduce the proportions of high-boilers which form in the reaction, an inert gas is introduced so that a carbon monoxide partial pressure of 50 mbar or less is set in the reactor.Type: GrantFiled: June 3, 2019Date of Patent: June 15, 2021Assignee: Evonik Operations GmbHInventors: Kévin Micoine, Luca Cameretti, Ralf Meier, Marcus Matthias Stergar, Dominik Schulte-Althoff, Axel Prinz
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Publication number: 20210163392Abstract: A method is useful for the continuous production of ketones from a compound with at least one epoxide group in at least one fixed bed reactor. A catalyst composition is used with at least one noble metal and at least one metal oxide. To reduce the proportions of high-boilers which form in the reaction, an inert gas is introduced so that a carbon monoxide partial pressure of 50 mbar or less is set in the reactor.Type: ApplicationFiled: June 3, 2019Publication date: June 3, 2021Applicant: Evonik Operations GmbHInventors: Kévin Micoine, Luca Cameretti, Ralf Meier, Marcus Matthias Stergar, Dominik Schulte-Althoff, Axel Prinz
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Patent number: 10994270Abstract: The present invention relates to a method for the reactivation of homogeneous catalyst systems from organic reaction mixtures. The catalyst systems are suitable for the oxidation of organic compounds such as, for example, cyclododecene. The reactivation is carried out using an aqueous base.Type: GrantFiled: June 28, 2017Date of Patent: May 4, 2021Assignee: Evonik Operations GmbHInventors: Ralf Meier, Stephanie Bajus, Jens Döring
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Patent number: 10913960Abstract: A microbial cell, which is genetically modified to increase the expression relative to the corresponding genetically unmodified cell of an AlkB alkane hydroxylase (Eb) having an amino acid sequence at least 95% identical with the amino acid sequence of SEQ ID NO: 1 and a wax-ester synthase (Ef) having an amino acid sequence at least 95% identical with the amino acid sequence of SEQ ID NO: 2. The cell does not have a genetic modification that increases formation of a carboxylic acid or a carboxylate ester from a simple carbon source.Type: GrantFiled: November 23, 2016Date of Patent: February 9, 2021Assignee: Evonik Operations GmbHInventors: Steffen Schaffer, Thomas Haas, Wilhelm Bruegging, Ralf Meier
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Publication number: 20200317856Abstract: The present invention relates to a process for producing cycloalkenamer-containing compositions. The polymerization of cycloalkenamer is stopped by addition of alkyl vinyl ethers. This is followed by a membrane filtration. This type of production affords polyalkenamers that are thermally stable at 180° C.Type: ApplicationFiled: December 18, 2018Publication date: October 8, 2020Inventors: Kévin Micoine, Velichka KOLEVA, Ralf MEIER, Pedro VAZQUEZ TORAN
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Patent number: 10479751Abstract: The present invention provides an apparatus comprising a feed arranged below the middle of the apparatus, a quenching agent inlet arranged above the feed, an outlet arranged below the feed and a draw arranged above the quenching agent inlet, the apparatus having a region provided with one or more packing elements, wherein at least one means which ensures the formation of a liquid layer having a height of at least 1 cm is present between the quenching agent inlet and a packing element present between the quenching agent inlet and feed. The present invention also provides a process for preparing acrylic acid, which includes a step of oxidizing acrolein, wherein the reaction mixture obtained in this oxidation is contacted with water as quenching agent in an inventive apparatus, and a composition obtainable as bottom product in the process according to the invention, comprising acrylic acid and water.Type: GrantFiled: August 11, 2014Date of Patent: November 19, 2019Assignee: Evonik Degussa GmbHInventors: Jürgen Mosler, Christian Psiorz, Franz-Felix Kuppinger, Raphael Schriewer, Arnd Bruhns, Armin Rix, Peter Kreis, Ralf Meier, James Edward Elder
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Publication number: 20190345101Abstract: The invention relates to a method for producing cyclododecanone (CDON). During the production, contaminated cyclododecane (CDAN) is produced. This can be separated from CDON by distillation (CDAN-containing fraction). The separation of CDAN and impurities such as 13-oxabicyclo [7.3.1]tridacane occurs by crystallizing out CDAN from the CDAN-containing fraction.Type: ApplicationFiled: January 31, 2018Publication date: November 14, 2019Inventors: Luca Cameretti, Jan Caßens, Ralf Meier
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Publication number: 20190232271Abstract: The present invention relates to a method for the reactivation of homogeneous catalyst systems from organic reaction mixtures. The catalyst systems are suitable for the oxidation of organic compounds such as, for example, cyclododecene. The reactivation is carried out using an aqueous base.Type: ApplicationFiled: June 28, 2017Publication date: August 1, 2019Applicant: Evonik Degussa GmbHInventors: Ralf MEIER, Stephanie BAJUS, Jens DOERING
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Patent number: 9929615Abstract: A winding arrangement in a machine component for a rotary electrical machine (1), comprising: a plurality of slots (11); a winding (7) which is wound with a winding conductor (8) and has a plurality of coils (12) which each run through two of the slots (11), wherein coil sides, which are accommodated in the slots (11), of at least one last-wound coil (16) are exposed toward corresponding slot openings of the slots (11); and at least one fixing winding (17, 20a, 20b) which is formed by a section of the winding conductor (8) and has at least one fixing turn which runs transversely across a coil head (14) of the at least one last-wound coil (16) of the winding (7).Type: GrantFiled: August 31, 2015Date of Patent: March 27, 2018Assignee: Robert Bosch GmbHInventors: Michael Huber, Werner Bloedt, Gerold Schleif, Marcin Ostrowski, Klemens Heid, Lukas Eberle, Ralf Meier
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Publication number: 20170145448Abstract: There is provided a microbial cell for producing at least one omega-functionalized carboxylic acid ester from at least one alkane, wherein the cell is genetically modified to increase the expression relative to the wild type cell of (i) Enzyme E1 capable of converting the alkane to the corresponding 1-alkanol; (ii) Enzyme E2 capable of converting the 1-alkanol of (i) to the corresponding 1-alkanal; (iii) Enzyme E3 capable of converting the 1-alkanal of (ii) to the corresponding alkanoic acid; (iv) Enzyme E4 capable of converting the alkanoic acid of (iii) to the corresponding alkanoic acid ester; and (iv) Enzyme E5 capable of converting the alkanoic acid ester of (iv) to the corresponding omega-hydroxy-alkanoic acid ester, and wherein the cell does not comprise a genetic modification that increases the expression relative to the wild type cell of at least one of the following enzymes E20-E24 selected from the group consisting of: E20 Acyl-ACP thioesterase, of EC 3.1.2.14 or EC 3.1.2.Type: ApplicationFiled: November 23, 2016Publication date: May 25, 2017Applicant: Evonik Degussa GmbHInventors: Steffen SCHAFFER, Thomas Haas, Wilhelm Bruegging, Ralf Meier
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Patent number: 9643153Abstract: A homogeneous catalyst system is removed from a reaction mixture of two liquid phases by separating the two liquid phases with a membrane having at least one separation-active layer in such a way that the homogeneous catalyst system is at least partially concentrated in a membrane retentate; wherein the reaction mixture contains at least one partially epoxidized cyclic unsaturated compound having twelve carbon atoms; and wherein the membrane separation-active layer contains crosslinked a silicone acrylate and/or polydimethylsiloxane and/or polyimide.Type: GrantFiled: May 18, 2015Date of Patent: May 9, 2017Assignee: EVONIK DEGUSSA GmbHInventors: Ralf Meier, Kévin Micoine, Peter Kreis, Frederik Gluth, Markus Priske
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Patent number: 9637436Abstract: A catalyst composition is useful for producing a ketone from a compound containing at least one epoxide group, and the catalyst composition contains at least one precious metal; and at least one mixed oxide; wherein the mixed oxide contains zirconium dioxide and silicon dioxide; wherein the precious metal is supported and the support is not entirely made of the mixed oxide; and wherein a mass ratio of zirconium dioxide to silicon dioxide in the mixed oxide is 86:14 to 99.9:0.1.Type: GrantFiled: October 2, 2015Date of Patent: May 2, 2017Assignee: Evonik Degussa GmbHInventors: Kévin Micoine, Ralf Meier, Jürgen Herwig, Angélique Bétard, Thomas Quandt
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Publication number: 20170095789Abstract: An apparatus for the epoxidation of a cyclic unsaturated C12 compound with hydrogen peroxide is provided. The apparatus includes a reactor for carrying out the reaction, wherein the walls of the reactor are at least partially furnished with a separation-active layer of crosslinked silicone acrylates and/or polydimethylsiloxane.Type: ApplicationFiled: December 19, 2016Publication date: April 6, 2017Applicant: EVONIK INDUSTRIES AGInventors: Ralf MEIER, Kévin Micoine, Peter Kreis, Frederik Gluth, Markus Priske
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Patent number: 9533933Abstract: Cyclododecanone (CDON) is prepared by epoxidizing cyclododecene (CDEN) to epoxycyclododecane (CDAN epoxide), and rearranging the CDAN epoxide to CDON to obtain a mixture comprising said CDON and CDEN, wherein CDEN is separated from the CDON-containing mixture and sent to the epoxidation to CDAN epoxide in step a.Type: GrantFiled: July 31, 2015Date of Patent: January 3, 2017Assignee: EVONIK DEGUSSA GmbHInventors: Kevin Micoine, Ralf Meier, Juergen Herwig, Martin Roos, Harald Haeger, Luca Cameretti, Jens Doering
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Patent number: 9533932Abstract: Cyclododecanone (CDON) is prepared by epoxidizing cyclododecene (CDEN) to epoxycyclododecane (CDAN epoxide), and rearranging the CDAN epoxide to CDON to obtain a mixture comprising said CDON and cyclododecane (CDAN), wherein CDAN is separated from the CDON-containing mixture and oxidized to CDON.Type: GrantFiled: July 31, 2015Date of Patent: January 3, 2017Assignee: EVONIK DEGUSSA GmbHInventors: Kevin Micoine, Ralf Meier, Juergen Herwig, Martin Roos, Harald Haeger, Luca Cameretti, Jens Doering
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Publication number: 20160257637Abstract: The invention relates to a device comprising a feed which is arranged below the center of the device, a quenching agent inlet which is arranged above the feed, an outlet which is arranged below the feed, and a discharge which is arranged above the quenching agent inlet, said device having a region provided with one or more packets between the quenching agent inlet and the feed. The device is characterized in that at least one means is provided between the quenching agent inlet and a packet provided between the quenching agent inlet and the feed, said means ensuring the formation of a liquid layer with a height of at least 1 cm.Type: ApplicationFiled: August 11, 2014Publication date: September 8, 2016Inventors: Jürgen Mosler, Christian Psiorz, Franz-Felix Kuppinger, Raphael Schriewer, Arnd Bruhns, Armin Rix, Peter Kreis, Ralf Meier, James Edward Elder
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Patent number: 9382181Abstract: A process for removing a cyclododecanone-rich target fraction (A) from a dehydrogenation mixture (O) comprising low boilers (LB), cyclododecanone (CDON), medium boilers (MB), cyclododecanol (CDOL) and high boilers (HB) is provided. According to the process, substantially pure CDON is obtained via a distillative sequence of two side draw columns connected in series, wherein the sidestream of the primary side draw column is fed into the secondary side draw column. From the top of each of the two side draw columns, a CDON-rich fraction is drawn off, and these are combined to form a target fraction, which is essentially pure CDON.Type: GrantFiled: December 13, 2013Date of Patent: July 5, 2016Assignee: EVONIK DEGUSSA GmbHInventors: Luca Cameretti, Daniel Demicoli, Ralf Meier
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Publication number: 20160096794Abstract: A catalyst composition is useful for producing a ketone from a compound containing at least one epoxide group, and the catalyst composition contains at least one precious metal; and at least one mixed oxide; wherein the mixed oxide contains zirconium dioxide and silicon dioxide; wherein the precious metal is supported and the support is not entirely made of the mixed oxide; and wherein a mass ratio of zirconium dioxide to silicon dioxide in the mixed oxide is 86:14 to 99.9:0.1.Type: ApplicationFiled: October 2, 2015Publication date: April 7, 2016Applicant: Evonik Degussa GmbHInventors: Kévin Micoine, Ralf Meier, Juergen Herwig, Angélique Bétard, Thomas Quandt
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Patent number: 9278898Abstract: A process for removing a cyclododecanone-rich fraction from a dehydrogenation mixture containing low boilers, cyclododecanone, medium boilers, cyclododecanol and high boilers is provided. According to the process, the cyclododecanone is separated from the cyclododecanol in a dividing wall column. The apparatus which is the dividing wall column is also provided within this invention.Type: GrantFiled: December 13, 2013Date of Patent: March 8, 2016Assignee: EVONIK DEGUSSA GmbHInventors: Luca Cameretti, Daniel Demicoli, Ralf Meier