Patents by Inventor Lutz Heuer
Lutz Heuer 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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Publication number: 20230299706Abstract: A device for disconnecting an actuation of a power stage of an electric machine includes: a first input for detecting a safety function signal and a second input for detecting a reference potential of the safety function signal; and at least one switch-off path of the actuation, each of the at least one switch-off path including: an input coupler connected between the first input and the second input on an input side for transmitting the safety function signal from the first and second inputs; and at least one output for actuating a switch of a half bridge of the power stage, and at least one modulation logic unit for logically linking a modulation signal associated with a respective switch and the safety function signal transmitted by a respective input coupler and to output it at the output as a disconnectable modulation signal.Type: ApplicationFiled: July 7, 2021Publication date: September 21, 2023Inventors: Alexander Guenter, Dirk Plewka, Lutz Heuer
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Patent number: 10298218Abstract: The invention relates to a method and a device for controlling an electrical or electronic switching element that can be activated by an electrical signal, wherein a PWM signal can be produced by a PWM module for controlling the switching element and which can be modulated as a function of the supply voltage and/or of an ambient temperature on the electromechanical or electronic switch.Type: GrantFiled: November 26, 2016Date of Patent: May 21, 2019Assignee: PHOENIX CONTACT GMBH & CO. KGInventors: Lutz Heuer, Stephan Hansmeier, Bernd Schulz, Dirk Plewka
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Publication number: 20180261412Abstract: A switching unit for controlling at least one switching element, includes a control unit adapted to control the at least one switching element; a connection for applying a supply voltage for power supply of the control unit; an energy storage connectable to the connection for applying a supply voltage and adapted, when the supply voltage drops or fails, to supply the control unit with power that is sufficient to control the at least one switching element such that the switching element executes a predetermined switching operation; wherein the switching unit includes means for monitoring the operability of the energy storage. Furthermore, a method for controlling at least one switching element using the switching unit.Type: ApplicationFiled: November 25, 2016Publication date: September 13, 2018Applicant: Phoenix Contact GmbH & Co. KGInventors: Elmar SCHAPER, Bernd SCHULTZ, Lutz HEUER, Stephan HANSMEIER, Dirk PLEWKA, Alexander GUNTER
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Publication number: 20170305825Abstract: The present invention relates to an improved method for producing 4-isopropyl-3-methylphenol (p-thymol) from distillation residues of thymol production.Type: ApplicationFiled: October 12, 2015Publication date: October 26, 2017Applicant: LANXESS Deutschland GmbHInventors: Uwe BOEGER, Lutz HEUER, Eberhard ZIRNGIEBL, Alexander HENSELER, Eszter FARKAS
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Publication number: 20170155250Abstract: The invention relates to a method and a device for controlling an electrical or electronic switching element that can be activated by an electrical signal, wherein a PWM signal can be produced by a PWM module for controlling the switching element and which can be modulated as a function of the supply voltage and/or of an ambient temperature on the electromechanical or electronic switch.Type: ApplicationFiled: November 26, 2016Publication date: June 1, 2017Inventors: Lutz Heuer, Stephan Hansmeier, Bernd Schulz, Dirk Plewka
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Patent number: 9464164Abstract: Disclosed is a method for preparing polyesters, comprising reacting polyols with carboxylic acids and, optionally, a catalyst, wherein the polyols bear at least two hydroxyl groups, wherein, at least one of said hydroxyl group is bound to an aliphatic carbon atom and wherein the polyols comprise one or more compounds of the formula (I) or (II), ?where ?n is 1, 2, 3 or 4, ?m is 1, 2 or 3, ?p is 2, ?Q is sulphur or C1-C4-alkylene, and ?the radicals R1 are each, independently of any other radicals R1 present, C1-C8-alkyl or Ci-C8-alkoxy, where at least one ortho position of the two phenyl rings in the formula (II) or the phenyl ring in the formula (I) must be substituted by a secondary or tertiary radical.Type: GrantFiled: March 18, 2010Date of Patent: October 11, 2016Assignee: LANXESS Deutschland GmbHInventor: Lutz Heuer
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Patent number: 9447782Abstract: A compressor system and method for the isothermal compression of industrial gases includes a compression cylinder into which an industrial gas having impurities can be introduced and compressed via a displacement fluid, and an expansion space for the desorption of impurities from at least part of the displacement fluid after the displacement fluid sorbs impurities from the gas during compression in the compression cylinder. The displacement fluid may compress the gas and sorb contaminants from the gas, and following the compression, at least a portion of the displacement fluid may be conducted to an expansion chamber to desorb the impurities from the fluid and remove the impurities from the system.Type: GrantFiled: December 13, 2011Date of Patent: September 20, 2016Assignee: LANXESS Deutschland GmbHInventor: Lutz Heuer
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Patent number: 9300126Abstract: An apparatus for short-circuit protection of a three-phase load in a three-phase system includes an input for connection of the apparatus to a three-phase network, an output for connection of the three-phase load to the apparatus, a means for producing an auxiliary short circuit in the three-phase network by ignition of the means, a means for identifying a short circuit at the three-phase load, and a means for generating an ignition pulse upon identification of the short circuit. The means for producing the auxiliary short circuit and the means for identifying the short circuit are provided in the current path between the input and the output. The means for producing the auxiliary short circuit is ignitable by the ignition pulse. The means for generating the ignition pulse is formed so that the ignition pulse can be generated by a short-circuit current established by the means for identifying the short circuit.Type: GrantFiled: March 15, 2012Date of Patent: March 29, 2016Assignee: PHOENIX CONTACT GMBH & CO KGInventors: Elmar Schaper, Rainer Durth, Lutz Heuer, Bernd Schulz
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Publication number: 20150348734Abstract: The invention relates to an automatic circuit breaker (2) for protecting a phase (4, 5, 6), having an input terminal (7), an output terminal (8), a current path (12), which electrically conductively connects the input terminal (7) and the output terminal (8), a disconnection apparatus (13), which is arranged in the current path (12) and is configured to interrupt the current path when actuated, a discharge terminal (9), a discharge path (15), which is connected at one end thereof to the current path (12) between the disconnection apparatus (13) and the output terminal (8) and is connected at the other end thereof to the discharge terminal (9), a connection apparatus (16), which is arranged in the discharge path (15) and is configured to connect through the discharge path when actuated, and a monitoring device (14), which is configured to monitor the current in the current path (12) and, when an overcurrent is identified, to actuate the disconnection apparatus (13) and the connection apparatus (16), wherein thType: ApplicationFiled: December 17, 2013Publication date: December 3, 2015Inventors: Elmar Schaper, Lutz Heuer, Detlev Schürgens, Bernd Schulz
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Patent number: 9024079Abstract: The invention relates to a process for rectificative separation of compositions of matter containing diastereomers of 2-isopropyl-5-methylcyclohexanol by using ionic liquids as extractants.Type: GrantFiled: August 27, 2012Date of Patent: May 5, 2015Assignee: LANXESS Deutschland GmbHInventors: Reinhold Brink, Lutz Heuer, Sven Kuhlmann, Martin Mechelhoff, Oliver Pfohl
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Patent number: 8993813Abstract: The present invention relates to a process for the preparation of 4-isopropyl-3-methylphenol (p-thymol) from distillation residues of thymol production.Type: GrantFiled: May 18, 2012Date of Patent: March 31, 2015Assignee: LANXESS Deutschland GmbHInventors: Uwe Boeger, Lutz Heuer, Michael Herzhoff
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Publication number: 20140163261Abstract: The present invention relates to a process for the preparation of 4-isopropyl-3-methylphenol (p-thymol) from distillation residues of thymol production.Type: ApplicationFiled: May 18, 2012Publication date: June 12, 2014Applicant: LANXESS DEUTSCHLAND GMBHInventors: Uwe Boeger, Lutz Heuer, Michael Herzhoff
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Publication number: 20140071574Abstract: An apparatus for short-circuit protection of a three-phase load in a three-phase system includes an input for connection of the apparatus to a three-phase network, an output for connection of the three-phase load to the apparatus, a means for producing an auxiliary short circuit in the three-phase network by ignition of the means, a means for identifying a short circuit at the three-phase load, and a means for generating an ignition pulse upon identification of the short circuit. The means for producing the auxiliary short circuit and the means for identifying the short circuit are provided in the current path between the input and the output. The means for producing the auxiliary short circuit is ignitable by the ignition pulse. The means for generating the ignition pulse is formed so that the ignition pulse can be generated by a short-circuit current established by the means for identifying the short circuit.Type: ApplicationFiled: March 15, 2012Publication date: March 13, 2014Applicant: Phoenix Contact GmbH & Co. KGInventors: Elmar Schaper, Rainer Durth, Lutz Heuer, Bernd Schulz
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Publication number: 20140066665Abstract: The invention relates to a process for the preparation of 2-isopropyl-5-methylcyclohexanol (D,L-menthol) via the hydrogenation of thymol to menthone and subsequent further hydrogenation to give D,L-menthol.Type: ApplicationFiled: August 29, 2013Publication date: March 6, 2014Applicant: LANXESS DEUTSCHLAND GMBHInventors: Martin MECHELHOFF, Claus DREISBACH, Joerg-Dietrich JENTSCH, Lutz HEUER, Peter WASSERSCHEID, Anne RITTSTEIGER
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Publication number: 20140066664Abstract: The invention relates to a process for the preparation of 2-isopropyl-5-methylcyclohexanol (menthol) via the hydrogenation of thymol to neomenthol and the subsequent isomerization to give D/L (+/?)-menthol.Type: ApplicationFiled: August 29, 2013Publication date: March 6, 2014Applicant: LANXESS Deutschland GmbHInventors: Martin MECHELHOFF, Claus DREISBACH, Joerg-Dietrich JENTSCH, Lutz HEUER, Peter WASSERSCHEID, Anne RITTSTEIGER
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Publication number: 20140018580Abstract: The invention relates to a process for rectificative separation of compositions of matter containing diastereomers of 2-isopropyl-5-methylcyclohexanol by using ionic liquids as extractants.Type: ApplicationFiled: August 27, 2012Publication date: January 16, 2014Applicant: LANXESS DEUTSCHLAND GMBHInventors: Reinhold Brink, Lutz Heuer, Sven Kuhlmann, Martin Mechelhoff
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Publication number: 20140012046Abstract: The present invention relates to a process for preparing menthol isomers by selective rearrangement of stereoisomers of menthol or mixtures thereof in the presence of ruthenium-containing supported catalysts doped with or comprising alkaline earth metal alkoxides, and to the catalysts themselves.Type: ApplicationFiled: July 22, 2011Publication date: January 9, 2014Applicant: LANXESS DEUTSCHLAND GMBHInventors: Lutz Heuer, Eberhard Zirngiebl, Martin Mechelhoff
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Publication number: 20130323087Abstract: The present invention relates to a compressor (10) and a method, in which the compressor (10) has, for the, in particular, isothermal compression of industrial gases, a compression cylinder (12), into which an industrial gas having impurities can be introduced, and a displacement fluid (16) capable of being introduced into the compression cylinder (12) by means of a compressor pump (26), the displacement fluid (16) having higher solubility for at least one impurity of the industrial gas than for a main component of the industrial gas. According to the invention, an expansion space (32) for the desorption of the impurity from at least part of the displacement fluid (16) is provided, a purge pump (36) for the discharge of impurities which have assumed the gas phase (34) being connected to the expansion space (32).Type: ApplicationFiled: December 13, 2011Publication date: December 5, 2013Applicant: LANXESS DEUTSCHLAND GMBHInventor: Lutz Heuer
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Patent number: 8531179Abstract: A device (10) for the detection of current asymmetries in three-phase circuits (L1, L2, L3) is provided. This device (10) has a first current measuring mechanism (S1) for the measurement of first phase (L1) and a second current measuring mechanism (S3) for the measurement of a second phase (L3). Furthermore, the device has a computing unit (ALU) which determines a current symmetry value (N2, 3; N1, 2) of the third phase (L2) relative to the first phase (L1) or second phase (L3) from the measured first phase and from the measured second phase. Moreover, an associated method is also provided.Type: GrantFiled: September 7, 2011Date of Patent: September 10, 2013Assignee: Phoenix Contact GmbH & Co. KGInventors: Daniel Hawel, Andre Korrek, Elmar Schaper, Stephan Hansmeier, Lutz Heuer, Bernd Schulz
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Patent number: 8519193Abstract: The present invention relates to a method for producing 4-isopropyl-3-methyl-phenol by alykylizing meta-cresol, distilling, and crystallizing.Type: GrantFiled: July 15, 2008Date of Patent: August 27, 2013Assignee: LANXESS Deutschland GmbHInventor: Lutz Heuer