Patents by Inventor Stefan Stein
Stefan Stein 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: 11649396Abstract: The present invention relates to a process for the preparation of a water-soluble copolymer comprising the step of reacting a monomer (a) of formula (I), wherein Q1, Q2, R1 to R7 and X have the meaning as indicated in the description and claims with at least one monoethylenically unsaturated, anionic monomer (b), preferably representing a monoethylenically unsaturated monomer comprising at least one carboxy, phosphonate or sulfonate group and salts thereof, preferably their ammonium salts or alkaline-earth metal salts or alkali metal salts; and at least one monoethylenically unsaturated, non-ionic monomer (c). The present invention further relates to a copolymer obtainable by said process and its use in enhanced oil recovery (EOR), a formulation comprising said copolymer and a method of oil production uses said formulation.Type: GrantFiled: June 3, 2019Date of Patent: May 16, 2023Assignee: BASF SEInventors: Bjoern Langlotz, Christian Bittner, Stefan Stein
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Patent number: 11613686Abstract: The present invention relates to a process for the preparation of a water-soluble copolymer comprising the step of reacting a monomer (a) of formula (I), (1) wherein Q1, Q2, R1 to R7 and X have the meaning as indicated in the description and claims with at least one monoethylenically unsaturated, anionic monomer (b), preferably representing a monoethylenically unsaturated monomer comprising at least one carboxy, phosphonate or sulfonate group and salts thereof, preferably their ammonium salts or alkaline-earth metal salts or alkali metal salts; and at least one monoethylenically unsaturated, non-ionic monomer (c). The present invention further relates to a copolymer obtainable by said process and its use in enhanced oil recovery (EOR), a formulation comprising said copolymer and a method of oil production uses said formulation.Type: GrantFiled: June 3, 2019Date of Patent: March 28, 2023Assignee: BASF SEInventors: Bjoern Langlotz, Christian Bittner, Stefan Stein
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Publication number: 20210246362Abstract: The present invention relates to a process for the preparation of a water-soluble copolymer comprising the step of reacting a monomer (a) of formula (I), wherein Q1, Q2, R1 to R7 and X have the meaning as indicated in the description and claims with at least one monoethylenically unsaturated, anionic monomer (b), preferably representing a monoethylenically unsaturated monomer comprising at least one carboxy, phosphonate or sulfonate group and salts thereof, preferably their ammonium salts or alkaline-earth metal salts or alkali metal salts; and at least one monoethylenically unsaturated, non-ionic monomer (c). The present invention further relates to a copolymer obtainable by said process and its use in enhanced oil recovery (EOR), a formulation comprising said copolymer and a method of oil production uses said formulation.Type: ApplicationFiled: June 3, 2019Publication date: August 12, 2021Inventors: Bjoern LANGLOTZ, Christian BITTNER, Stefan STEIN
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Publication number: 20210230331Abstract: The present invention relates to a process for the preparation of a water-soluble copolymer comprising the step of reacting a monomer (a) of formula (I), (1) wherein Q1, Q2, R1 to R7and X have the meaning as indicated in the description and claims with at least one monoethylenically unsaturated, anionic monomer (b), preferably representing a monoethylenically unsaturated monomer comprising at least one carboxy, phosphonate or sulfonate group and salts thereof, preferably their ammonium salts or alkaline-earth metal salts or alkali metal salts; and at least one monoethylenically unsaturated, non-ionic monomer (c). The present invention further relates to a copolymer obtainable by said process and its use in enhanced oil recovery (EOR), a formulation comprising said copolymer and a method of oil production uses said formulation.Type: ApplicationFiled: June 3, 2019Publication date: July 29, 2021Inventors: Bjoern LANGLOTZ, Christian BITTNER, Stefan STEIN
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Patent number: 10151260Abstract: The invention relates to a procedure for a switching pressure calculation at a metering valve of a fuel metering device for metering fuel into an exhaust gas system of a combustion engine with a component that is assigned to the exhaust gas system of the combustion engine for a regeneration, for a temperature impinge and/or for a thermo management, whereby the fuel is injected before this component in streaming direction of the exhaust gas. The invention concerns furthermore a corresponding device for implementing the procedure.Type: GrantFiled: November 11, 2008Date of Patent: December 11, 2018Assignee: Robert Bosch GMBHInventors: Guenter Keusen, Damian Dyrbusch, Volker Reusing, Stefan Stein
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Patent number: 9995240Abstract: A method for regulating a common rail injector, the method including acquiring a signal of a sensor, which signal is proportional to a pressure in a valve space of the common rail injector; evaluating a change in the signal over time in order to detect at least one operating event of the common rail injector; and modifying at least one operating variable of the common rail injector as a function of the at least one operating event, the at least one operating variable being selected from an opening duration, a closing duration, an opening point in time, and a closing point in time of a switching valve of the common rail injector, and from an opening duration, an opening point in time, and a closing point in time of a needle valve of the common rail injector.Type: GrantFiled: February 19, 2015Date of Patent: June 12, 2018Assignee: ROBERT BOSCH GMBHInventors: Ralph Kober, Holger Rapp, Fabian Fischer, Marco Beier, Stefan Stein
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Patent number: 9982615Abstract: A method for predefining a current through a solenoid coil of a solenoid valve, a closing point in time of the solenoid valve being detected with the aid of a sensor, a sensor value being monitored, and, when a premature closing of the solenoid valve is identified based on the monitored sensor value, the current through the solenoid coil of the solenoid valve is increased.Type: GrantFiled: October 14, 2015Date of Patent: May 29, 2018Assignee: ROBERT BOSCH GMBHInventors: Heike Lang, Frank Schmitt, Ralph Kober, Holger Rapp, Fabian Fischer, Marco Beier, Stefan Stein
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Publication number: 20170074203Abstract: A method for regulating a common rail injector, the method including acquiring a signal of a sensor, which signal is proportional to a pressure in a valve space of the common rail injector; evaluating a change in the signal over time in order to detect at least one operating event of the common rail injector; and modifying at least one operating variable of the common rail injector as a function of the at least one operating event, the at least one operating variable being selected from an opening duration, a closing duration, an opening point in time, and a closing point in time of a switching valve of the common rail injector, and from an opening duration, an opening point in time, and a closing point in time of a needle valve of the common rail injector.Type: ApplicationFiled: February 19, 2015Publication date: March 16, 2017Inventors: Ralph Kober, Holger Rapp, Fabian Fischer, Marco Beier, Stefan Stein
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Publication number: 20160102779Abstract: A method for predefining a current through a solenoid coil of a solenoid valve, a closing point in time of the solenoid valve being detected with the aid of a sensor, a sensor value being monitored, and, when a premature closing of the solenoid valve is identified based on the monitored sensor value, the current through the solenoid coil of the solenoid valve is increased.Type: ApplicationFiled: October 14, 2015Publication date: April 14, 2016Inventors: Heike LANG, Frank SCHMITT, Ralph KOBER, Holger RAPP, Fabian FISCHER, Marco BEIER, Stefan STEIN
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Patent number: 8863501Abstract: The invention relates to an injection system for injecting a fluid into a filter provided in an exhaust system, comprising at least two modules and at least one pressure compensation volume (44, 46, 48, 54, 56, 58), which is designed for feeding fluid to at least one of the modules and hydraulically connects at least two of the modules. Each module comprises at least one injection unit (40, 50, 60) designed for injecting fluid into the exhaust system.Type: GrantFiled: April 26, 2010Date of Patent: October 21, 2014Assignee: Robert Bosch GmbHInventors: Volker Reusing, Chris Weirauch, Stefan Stein
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Patent number: 8776510Abstract: A mounting unit (2) for fastening an injection member to an exhaust gas tract has a retaining region (12) for receiving the injection member, and an edge region (28). At least one opening (30) for receiving a fastening element is provided in the edge region (28). The mounting unit (2) is designed in such a manner that there is an air gap (13) between the fastening element and the retaining region (12) when the mounting unit (2) is fastened to the exhaust gas tract by the fastening element.Type: GrantFiled: June 2, 2010Date of Patent: July 15, 2014Assignee: Robert Bosch GmbHInventors: Stefan Stein, Arnad Beganovic, Ralf Gragen, Jens Benitsch
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Patent number: 8528324Abstract: The invention relates to a metering device for fuel upstream of an oxidation catalytic converter in the exhaust gas system of an internal combustion engine. A closing valve and/or a metering valve and an injection valve are integrated downstream of a supply device for fuel into a line leading to a metering unit. A return having a first overflow valve branches off upstream of the metering unit. A further return having a second overflow valve influencing a mean pressure level of the metering unit is disposed between the closing valve and the metering valve.Type: GrantFiled: May 18, 2009Date of Patent: September 10, 2013Assignee: Robert Bosch GmbHInventors: Guenter Keusen, Volker Reusing, Stefan Stein
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Patent number: 8371107Abstract: The invention relates to a device for the regeneration, temperature loading and/or thermal management of a component, assigned to an exhaust system, of an internal combustion engine. The device includes at least one injection valve which injects a fluid, in particular fuel, into the exhaust system, preferably in chatter mode, for example as a function of the pressure of the supplied fluid. The injection valve has a valve head and a valve seat which have geometries designed in such a way that a fluidic force of the supplied fluid acting on the injection valve drops continuously over a stroke of the valve head. The invention also relates to an injection valve having such valve-head and valve-seat geometries and to a corresponding method for the regeneration, temperature loading and/or thermal management of a component, assigned to an exhaust system, of an internal combustion engine.Type: GrantFiled: April 23, 2007Date of Patent: February 12, 2013Assignee: Robert Bosch GmbHInventors: Rainer Haeberer, Joerg Lange, Volker Reusing, Tobias Reiser, Stefan Stein
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Patent number: 8256209Abstract: The invention relates to a device for the regeneration, temperature loading and/or thermal management of a component, which is assigned to an exhaust gas system, of an internal combustion engine preferably of a vehicle, having at least one injection valve, which operates preferably in a chatter mode as a function of the pressure of supplied fuel, for injecting fuel for the purpose of regeneration, temperature loading and/or thermal management into the exhaust system of the internal combustion engine. The invention is distinguished by at least one pressure control valve which is arranged upstream of the injection valve and dampens or eliminates pressure fluctuations. The invention also relates to a corresponding method.Type: GrantFiled: June 1, 2006Date of Patent: September 4, 2012Assignee: Robert Bosch GmbHInventors: Nestor Rodriguez-Amaya, Volker Reusing, Stefan Stein
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Publication number: 20120220502Abstract: The present invention is directed to the use of alkylalkoxysulfonates for the production of foams, which are stable at high temperatures, e.g. up to about 250° C. Furthermore, the invention relates to a method for producing of high temperature stable foams by using a foamable aqueous composition comprising at least one linear alkylalkoxysulfonate.Type: ApplicationFiled: February 24, 2012Publication date: August 30, 2012Applicant: BASF SEInventors: Gabriela Alvarez Jürgenson, Günter Oetter, Vandana Kurkal-Siebert, Marta Reinoso Garcia, Stefan Stein, Geza Horvath Szabo
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Publication number: 20120131910Abstract: The invention relates to an injection system for injecting a fluid into a filter provided in an exhaust system, comprising at least two modules and at least one pressure compensation volume (44, 46, 48, 54, 56, 58), which is designed for feeding fluid to at least one of the modules and hydraulically connects at least two of the modules. Each module comprises at least one injection unit (40, 50, 60) designed for injecting fluid into the exhaust system.Type: ApplicationFiled: April 26, 2010Publication date: May 31, 2012Applicant: ROBERT BOSCH GMBHInventors: Volker Reusing, Chris Weirauch, Stefan Stein
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Publication number: 20120110990Abstract: A mounting unit (2) for fastening an injection member to an exhaust gas tract has a retaining region (12) for receiving the injection member, and an edge region (28). At least one opening (30) for receiving a fastening element is provided in the edge region (28). The mounting unit (2) is designed in such a manner that there is an air gap (13) between the fastening element and the retaining region (12) when the mounting unit (2) is fastened to the exhaust gas tract by the fastening element.Type: ApplicationFiled: June 2, 2010Publication date: May 10, 2012Applicant: ROBERT BOSCH GMBHInventors: Stefan Stein, Arnad Beganovic, Ralf Gragen, Jens Benitsch
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Publication number: 20110138792Abstract: The invention relates to a metering device for fuel upstream of an oxidation catalytic converter in the exhaust gas system of an internal combustion engine. A closing valve and/or a metering valve and an injection valve are integrated downstream of a supply device for fuel into a line leading to a metering unit. A return having a first overflow valve branches off upstream of the metering unit. A further return having a second overflow valve influencing a mean pressure level of the metering unit is disposed between the closing valve and the metering valve.Type: ApplicationFiled: May 18, 2009Publication date: June 16, 2011Inventors: Guenter Keusen, Volker Reusing, Stefan Stein
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Publication number: 20110047996Abstract: The invention relates to an apparatus for metering at least one medium for reducing pollutant levels in an exhaust system, in particular for the introduction of fuel into an exhaust tract for regenerating an element for reducing pollutant levels in the exhaust tract. The apparatus includes at least one injection valve, in particular, a pressure-regulated injection valve and at least one supply line for supplying the pollutant-reducing medium to the injection valve. At least one pressure damper is provided in the supply line upstream of the injection valve.Type: ApplicationFiled: January 21, 2009Publication date: March 3, 2011Inventors: Ignacio Garcia-Lorenzana Merino, Marco Baccalaro, Volker Reusing, Stefan Stein
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Publication number: 20100326056Abstract: The invention relates to a procedure for a switching pressure calculation at a metering valve of a fuel metering device for metering fuel into an exhaust gas system of a combustion engine with a component that is assigned to the exhaust gas system of the combustion engine for a regeneration, for a temperature impinge and/or for a thermo management, whereby the fuel is injected before this component in streaming direction of the exhaust gas. The invention concerns furthermore a corresponding device for implementing the procedure.Type: ApplicationFiled: November 11, 2008Publication date: December 30, 2010Applicant: Robert Bosch GMBHInventors: Guenter Keusen, Damian Dyrbusch, Volker Reusing, Stefan Stein