Patents by Inventor Martin Körfer
Martin Körfer 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).
-
Patent number: 11939281Abstract: The present invention relates to a process for the purification of hydrogen cyanide, comprising the steps of a) splitting a liquid feed stream (1) comprising hydrogen cyanide into at least a first liquid stream (2) and a second liquid stream (3), b) introducing the first liquid stream (2) into a distillation column (4) at a point between the top and the bottom of the distillation column, c) introducing the second liquid stream (3) into the distillation column (4) at the top of the distillation column, d) withdrawing an overhead vapor stream (5) enriched in hydrogen cyanide from the distillation column (4), and e), withdrawing a bottom stream (6) depleted in hydrogen cyanide, wherein the temperature of the second liquid stream (3) in step c) is lower than the temperature of the first liquid stream (2) in step b).Type: GrantFiled: July 17, 2019Date of Patent: March 26, 2024Assignee: Evonik Operations GmbHInventors: Martin Körfer, Michael Eicker, Catrin Dorothee Becker, Thorsten Merker, Marko Bussmann
-
Publication number: 20230391720Abstract: D,L-methionine may include, based on the total weight of the D,L-methionine, from 15 to less than 50 wt.-% of the D,L-methionine with a particle size from more than 0 to less 150 micrometers, from 50 to less than 90 wt.-% of the D,L-methionine with a particle size from more than 0 to less 300 micrometers, and from 30 to less than 80 wt.-% of the D,L-methionine with a particle size in the range between 63 and 300 micrometers. The D,L-methionine may have a bulk density of at least 710 kg/m3.Type: ApplicationFiled: October 11, 2021Publication date: December 7, 2023Applicant: Evonik Operations GmbHInventors: Martin KOERFER (Deceased), Hans-Joachim HASSELBACH, Stefan REICHERT, Mauricio ANTEZANA, Antje HANSMEIER
-
Publication number: 20230270137Abstract: A coated composition for feeding a ruminant may include: (A) a core of a biologically active ingredient selected from (A-i) amino acids, N-acylamino acids, N-guanylamino acids, and/or salts thereof and/or 2-hydroxy-4-(methyl)butyric acid calcium salt; (A-ii) proteins; (A-iii) peptides; (A-iv) carbohydrates; (A-v) vitamins, vitamin A (acetate or palmitate), B, D2, D3, E, thiamine (HCl), riboflavin, nicotinic acid (amide), calcium pantothenate, choline pantothenate, pyridoxine hydrochloride, choline chloride, cyano-cobalamin, biotin, folic acid, and p-aminobenzoic acid; (A-vi) probiotic microorganisms; (A-vii) prebiotic foods; (A-viii) choline and salts thereof; (A-ix) polyunsaturated fatty acids, and salts thereof; and x) any combination of (A-i) to (A-ix); and (B) a coating, encapsulating the core, constituting 1 to 15% of total coated composition weight and including 85 to 95% wt./wt. of a film-forming agent, which is triethyl citrate, and 5 to 15% wt./wt.Type: ApplicationFiled: November 3, 2021Publication date: August 31, 2023Applicant: Evonik Operations GmbHInventors: Georg BORCHERS, Thomas GOTTSTEIN, Winfried HEIMBECK, Martin KOERFER (Deceased), Barry JACKSON, Claudia PARYS, Christian RABE
-
Patent number: 11180426Abstract: The present invention relates to a process for producing a particulate composition containing methionine, methionylmethionine, potassium in the form of potassium salt and ammonium sulphate, and use thereof.Type: GrantFiled: June 27, 2017Date of Patent: November 23, 2021Assignee: Evonik Operations GmbHInventors: Martin Koerfer, Hans Joachim Hasselbach, Gerit Niggemann, Antje Hansmeier, Hans Christian Alt, Dominik Egly, Peter Schulte
-
Publication number: 20210269396Abstract: The present invention relates to a process for the purification of hydrogen cyanide, comprising the steps of a) splitting a liquid feed stream (1) comprising hydrogen cyanide into at least a first liquid stream (2) and a second liquid stream (3), b) introducing the first liquid stream (2) into a distillation column (4) at a point between the top and the bottom of the distillation column, c) introducing the second liquid stream (3) into the distillation column (4) at the top of the distillation column, d) withdrawing an overhead vapor stream (5) enriched in hydrogen cyanide from the distillation column (4), and e), withdrawing a bottom stream (6) depleted in hydrogen cyanide, wherein the temperature of the second liquid stream (3) in step c) is lower than the temperature of the first liquid stream (2) in step b).Type: ApplicationFiled: July 17, 2019Publication date: September 2, 2021Applicant: Evonik Operations GmbHInventors: Martin KÖRFER, Michael EICKER, Catrin Dorothee BECKER, Thorsten MERKER, Marko BUSSMANN
-
Patent number: 11014878Abstract: The present invention relates to a method for preparing 3-methylthiopropionaldehyde by reacting methyl mercaptan with acrolein, in which deviations in the stoichiometry of methyl mercaptan to acrolein in the reaction to give 3-methylthiopropionaldehyde are compensated for by supplying or by forming 1,3-bis(methylthio)-1-propanol, and also to the use of 1,3-bis(methylthio)-1-propanol as a storage form of methyl mercaptan and/or 3-methylthiopropionaldehyde.Type: GrantFiled: February 14, 2017Date of Patent: May 25, 2021Assignee: Evonik Operations GmbHInventors: Stephan Rautenberg, Sascha Ceylan, Martin Koerfer, Judith Hierold, Harald Jakob, Christian Kaiser, Rainer Malzkorn, Thorsten Merker, Anja Nordschild
-
Patent number: 10919848Abstract: A process for preparing methionine includes the alkaline hydrolysis of 5-(2-methylmercaptoethyl)-hydantoin (methionine hydantoin) in an aqueous process solution containing alkali metal hydroxide and/or alkali metal carbonate and/or alkali metal hydrogencarbonate. The alkali metal cations in the process solution are potassium and sodium having a K/Na molar ratio range from 99/1 to 20/80.Type: GrantFiled: May 8, 2018Date of Patent: February 16, 2021Assignee: Evonik Operations GmbHInventors: Sebastian Bernhardt, Martin Körfer, Stefan Reichert, Hans-Joachim Hasselbach, Bernd Drapal, Rainer Peter, Christian Kaiser, Benny Hartono, Harald Jakob
-
Publication number: 20200299232Abstract: The present invention relates to a method for preparing 3-methylthiopropionaldehyde by reacting methyl mercaptan with acrolein, in which deviations in the stoichiometry of methyl mercaptan to acrolein in the reaction to give 3-methylthiopropionaldehyde are compensated for by supplying or by forming 1,3-bis(methylthio)-1-propanol, and also to the use of 1,3-bis(methylthio)-1-propanol as a storage form of methyl mercaptan and/or 3-methylthiopropionaldehyde.Type: ApplicationFiled: March 14, 2017Publication date: September 24, 2020Inventors: Stephan RAUTENBERG, Sascha CEYLAN, Martin KOERFER, Judith HIEROLD, Harald JAKOB, Christian KAISER, Rainer MALZKORN, Thorsten MERKER, Anja NORDSCHILD
-
Patent number: 10556850Abstract: The present invention relates to a process for purifying acrolein. The process includes the steps of a) splitting a liquid feed stream containing acrolein into at least a first liquid stream and a second liquid stream, b) introducing the first liquid stream with a temperature T1 into a distillation column at a point between the top and the bottom of the distillation column, c) introducing the second liquid stream with a temperature T2 into the distillation column at the top of the distillation column, d) withdrawing an overhead vapor stream enriched in acrolein from the distillation column, and e) withdrawing a bottom stream depleted in acrolein. The temperature T2 of the second liquid stream in step c) is lower than the temperature T1 of the first liquid stream in step b).Type: GrantFiled: July 24, 2019Date of Patent: February 11, 2020Assignee: Evonik Degussa GmbHInventors: Thorsten Merker, Martin Koerfer, Michael Eicker, Bruno Krudewig, Rainer Malzkorn, Haohao Zhu
-
Publication number: 20200039928Abstract: A process for preparing methionine includes the alkaline hydrolysis of 5-(2-methylmercaptoethyl)-hydantoin (methionine hydantoin) in an aqueous process solution containing alkali metal hydroxide and/or alkali metal carbonate and/or alkali metal hydrogencarbonate. The alkali metal cations in the process solution are potassium and sodium having a K/Na molar ratio range from 99/1 to 20/80.Type: ApplicationFiled: May 8, 2018Publication date: February 6, 2020Applicant: Evonik Operations GmbHInventors: Sebastian Bernhardt, Martin Körfer, Stefan Reichert, Hans-Joachim Hasselbach, Bernd Drapal, Rainer Peter, Christian Kaiser, Benny Hartono, Harald Jakob
-
Publication number: 20200031751Abstract: The present invention relates to a process for purifying acrolein. The process includes the steps of a) splitting a liquid feed stream containing acrolein into at least a first liquid stream and a second liquid stream, b) introducing the first liquid stream with a temperature T1 into a distillation column at a point between the top and the bottom of the distillation column, c) introducing the second liquid stream with a temperature T2 into the distillation column at the top of the distillation column, d) withdrawing an overhead vapor stream enriched in acrolein from the distillation column, and e) withdrawing a bottom stream depleted in acrolein. The temperature T2 of the second liquid stream in step c) is lower than the temperature T1 of the first liquid stream in step b).Type: ApplicationFiled: July 24, 2019Publication date: January 30, 2020Applicant: Evonik Degussa GmbHInventors: Thorsten MERKER, Martin KOERFER, Michael EICKER, Bruno KRUDEWIG, Rainer MALZKORN, Haohao ZHU
-
Publication number: 20190322600Abstract: The present invention relates to a process for producing a particulate composition containing methionine, methionylmethionine, potassium in the form of potassium salt and ammonium sulphate, and use thereof.Type: ApplicationFiled: June 27, 2017Publication date: October 24, 2019Applicant: Evonik Degussa GmbHInventors: Martin KOERFER, Hans Joachim HASSELBACH, Gerit NIGGEMANN, Antje HANSMEIER, Hans Christian ALT, Dominik EGLY, Peter SCHULTE
-
Patent number: 10441942Abstract: The reaction tube for preparing hydrogen cyanide comprises a cylindrical tube composed of ceramic, a catalyst comprising platinum applied to the inner wall of the tube and also at least one insert composed of ceramic, having three or four fins pointing from the tube axis to the inner wall of the tube, which is inserted into the cylindrical tube, wherein the fins divide the tube interior space into substantially straight channels with substantially identical circle segment cross sections and wherein the mean gap between the ends of the fins and the inner wall of the tube is in the range of 0.1 to 3 mm. In the method for preparing hydrogen cyanide, ammonia and at least one aliphatic hydrocarbon having 1 to 4 carbon atoms are reacted in the reaction tube at 1000 to 1400° C.Type: GrantFiled: October 2, 2014Date of Patent: October 15, 2019Assignee: Evonik Degussa, GmbHInventors: Martin Steffan, Martin Steurenthaler, Thomas Müller, Martin Körfer, Steffen Krill
-
Patent number: 9927120Abstract: The invention relates to a method for thermally after-burning the waste gas flows developing during the production of acrolein in a gas phase process and for thermally after-burning the waste gas flows developing during the production of hydrocyanic acid in a gas phase process, characterized in that the waste gas flows from the production of acrolein and the waste gas flows from the production of hydrocyanic acid are supplied to a joint thermal after-burning process.Type: GrantFiled: December 19, 2011Date of Patent: March 27, 2018Assignee: Evonik Degussa GmbHInventors: Caspar Heinrich Finkeldei, Pablo Zacchi, Martin Körfer
-
Patent number: 9649615Abstract: The present invention relates to a reactor and to a process for synthesis of hydrogen sulphide from elemental sulphur and hydrogen at elevated pressure and elevated temperature. The invention further relates to the use of the reactor for preparation of hydrogen sulphide in high yield and with a low H2Sx content.Type: GrantFiled: May 31, 2013Date of Patent: May 16, 2017Assignee: EVONIK DEGUSSA GmbHInventors: Caspar-Heinrich Finkeldei, Chiu Kee Cheung, Ralf Maassen, Stefan Wenner, Martin Koerfer
-
Patent number: 9630843Abstract: The present invention relates to a reactor and to a process for synthesis of hydrogen sulphide from elemental sulphur and hydrogen at elevated pressure and elevated temperature. The invention further relates to the use of the reactor for preparation of hydrogen sulphide in high yield and with a low H2Sx content.Type: GrantFiled: May 31, 2013Date of Patent: April 25, 2017Assignee: EVONIK DEGUSSA GmbHInventors: Caspar-Heinrich Finkeldei, Chiu Kee Cheung, Ralf Maassen, Geert Van Eester, Stefan Wenner, Martin Koerfer
-
Patent number: 9617209Abstract: The invention relates to a method for crystallizing D,L-methionine from aqueous solutions and/or suspensions containing D,L-methionine and D,L-methionine ammonium salts, having a Met content of 70-180 g/kg, an NH4+ content of 1-5 g/kg, in the presence of a crystallization additive, which comprises a nonionic or anionic surfactant or a mixture of various nonionic or anionic surfactants, in which the temperature of the solution and/or suspension is lowered directly or stepwise from T1=85-110° C. to T2=30-50° C., so that D,L-methionine precipitates as a solid.Type: GrantFiled: September 10, 2014Date of Patent: April 11, 2017Assignee: EVONIK DEGUSSA GmbHInventors: Stefan Reichert, Harald Jakob, Hans Joachim Hasselbach, Martin Koerfer
-
Patent number: 9464045Abstract: This disclosure relates to a process for preparing D,L-methionine by feeding carbon dioxide to an aqueous potassium methioninate solution obtained by hydrolysis of 5-(2-methylmercaptoethyl)hydantoin, in order to precipitate out crude methionine, which is separated off and purified. In this process an aqueous solution of the separated-off crude methionine is purified by recrystallization from a solution containing potassium ions and also a crystallization additive. The crystallization additive is a nonionic or anionic surfactant, or a mixture of different nonionic or anionic surfactants. The recrystallization occurs by introducing a 60 to 110° C.-hot methionine solution into a 35 to 80° C.-warm methionine suspension, a temperature of which is lower than that of the introduced solution, such that the temperature of the methionine suspension being maintained between 35 and 80° C. during the addition. The crystallization additive is a sorbitan fatty acid ester or a mixture of different sorbitan fatty acid esters.Type: GrantFiled: September 10, 2015Date of Patent: October 11, 2016Assignee: EVONIK DEGUSSA GmbHInventors: Martin Koerfer, Hans Joachim Hasselbach, Stefan Reichert, Harald Jakob, Christoph Weckbecker, Klaus Huthmacher, Horst Krull, Bernd Drapal, Rainer Peter
-
Publication number: 20160263558Abstract: The reaction tube for preparing hydrogen cyanide comprises a cylindrical tube composed of ceramic, a catalyst comprising platinum applied to the inner wall of the tube and also at least one insert composed of ceramic, having three or four fins pointing from the tube axis to the inner wall of the tube, which is inserted into the cylindrical tube, wherein the fins divide the tube interior space into substantially straight channels with substantially identical circle segment cross sections and wherein the mean gap between the ends of the fins and the inner wall of the tube is in the range of 0.1 to 3 mm. In the method for preparing hydrogen cyanide, ammonia and at least one aliphatic hydrocarbon having 1 to 4 carbon atoms are reacted in the reaction tube at 1000 to 1400° C.Type: ApplicationFiled: October 2, 2014Publication date: September 15, 2016Applicant: Evonik Degussa GmbHInventors: Martin Steffan, Martin Steurenthaler, Thomas Müller, Martin Körfer, Steffen Krill
-
Patent number: 9440208Abstract: The present invention relates to a reactor and to a process for synthesis of hydrogen sulphide from elemental sulphur and hydrogen at elevated pressure and elevated temperature. The invention further relates to the use of the reactor for preparation of hydrogen sulphide in high yield and with a low H2SX content.Type: GrantFiled: May 31, 2013Date of Patent: September 13, 2016Assignee: EVONIK DEGUSSA GmbHInventors: Caspar-Heinrich Finkeldei, Chiu Kee Cheung, Ralf Maassen, Stefan Wenner, Martin Koerfer