Patents by Inventor Stephan Ehlers
Stephan Ehlers 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: 20230339485Abstract: The present disclosure relates to improved diagnostic devices, systems and methods for improving the accuracy and speed of diagnosing datalink/CAN errors on public and private networks within the electronic control systems of machines. The present disclosure includes incorporating one or more diagnostic modules to one or more datalinks within an existing electronic control system. These diagnostic modules can monitor datalink voltages and identify and transmit error messages and datalink voltage anomalies without the need for manual diagnosis by a repair technician. Alternatively, another diagnostic system and method includes installing microchips having datalink voltage measurements to existing modules, such as a telematics module, thereby enabling that the module to identify and report datalink voltage anomalies.Type: ApplicationFiled: April 21, 2022Publication date: October 26, 2023Applicant: International Engine Intellectual Property Company, LLCInventor: Mark Stephan Ehlers
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Patent number: 11230989Abstract: A system and method for toolless disablement of diesel engine fuel injectors during engine cranking to facilitate diagnostics by depressing an engine throttle to a predetermined minimum depression level, say, at least 90% of an engine throttle distance to a floor of a diesel vehicle, depressing a brake, actuating a compression-ignition cycle actuator to a crank position, and holding the depressed brake, depressed engine throttle to its predetermined depression level for a predetermined minimum period, for instance at least 3 seconds, sending signals from an engine throttle position sensor and an ignition sensor to an engine control module, receiving signals from the engine throttle position sensor and ignition sensor by the engine control module, sending signals from the engine control module to the at least one fuel injector to disable the at least one fuel injector, controlling cranking of an engine with the engine control module, and allowing the engine to crank with at least one disabled fuel injector andType: GrantFiled: March 4, 2021Date of Patent: January 25, 2022Assignee: International Engine Intellectual Property Company, LLCInventor: Mark Stephan Ehlers
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Publication number: 20100137450Abstract: Aqueous formaldehyde solutions are prepared and the formaldehyde content of the aqueous formaldehyde solutions produced is determined by an online analytical method. The desired formaldehyde content can subsequently be established by addition of water so that an aqueous formaldehyde solution having a defined formaldehyde content (formalin) is obtained.Type: ApplicationFiled: November 19, 2009Publication date: June 3, 2010Applicant: Bayer MaterialScience AGInventors: Heniz-Herbert Müller, Stephan Ehlers, Andreas Schlemenat, Arnulf Werner, Martin Schiffhauer
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Patent number: 6919293Abstract: This invention relates to novel double metal cyanide (DMC) catalysts for the production of polyether polyols by polyaddition of alkylene oxides onto starter compound comprising active hydrogen atoms, wherein the catalyst contains a) double metal cyanide compounds, b) organic complex ligands other than c) and c) two or more complex-forming components from the classes of compounds comprising functionalised polymers, glycidyl ethers, glycosides, carboxylic acid esters of polyhydric alcohols, bile acids or the salts, esters or amides thereof, cyclodextrins, phosphorus compounds, ?,?-unsaturated carboxylic acid esters or ionic surface- or interface-active compounds. The catalysts according to the invention exhibit greatly increased activity in polyether polyol production.Type: GrantFiled: October 26, 2000Date of Patent: July 19, 2005Assignee: Bayer AktiengesellschaftInventors: Pieter Ooms, Jörg Hofmann, Christian Steinlein, Stephan Ehlers
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Publication number: 20050027145Abstract: The invention provides an improved process for the preparation of double metal cyanide (DMC) catalysts for the preparation of polyether polyols by polyaddition of alkylene oxides on to starter compounds containing active hydrogen atoms, in which aqueous solutions of a metal salt and a metal cyanide salt are first reacted in the presence of an organic complexing ligand and optionally one or more further complex-forming components to form a DMC catalyst dispersion, this dispersion is then filtered, the filter cake is subsequently washed with one or more aqueous or non-aqueous solutions of the organic complexing ligand and optionally one or more further complex-forming components by a filter cake washing and the washed filter cake is finally dried, after an optional pressing out or mechanical removal of moisture.Type: ApplicationFiled: August 23, 2004Publication date: February 3, 2005Inventors: Jorg Hofmann, Stephan Ehlers, Bernd Klinksiek, Thorsten Fechtel, Matthias Ruhland, Jurgen Scholz, Franz Fohles, Ulrich Esser
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Patent number: 6835687Abstract: The invention provides an improved process for the preparation of double metal cyanide (DMC) catalysts for the preparation of polyether polyols by polyaddition of alkylene oxides on to starter compounds containing active hydrogen atoms, in which aqueous solutions of a metal salt and a metal cyanide salt are first reacted in the presence of an organic complexing ligand and optionally one or more further complex-forming components to form a DMC catalyst dispersion, this dispersion is then filtered, the filter cake is subsequently washed with one or more aqueous or non-aqueous solutions of the organic complexing ligand and optionally one or more further complex-forming components by a filter cake washing and the washed filter cake is finally dried, after an optional pressing out or mechanical removal of moisture.Type: GrantFiled: March 5, 2003Date of Patent: December 28, 2004Assignee: Bayer AktiengesellschaftInventors: Jörg Hofmann, Stephan Ehlers, Bernd Klinksiek, Thorsten Fechtel, Matthias Ruhland, Jürgen Scholz, Franz Föhles, Ulrich Esser
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Patent number: 6802640Abstract: In a static micromixer which comprises at least one mixing chamber and one guide component disposed upstream of the mixing chamber and which includes channels extending therethrough at an angle to the longitudinal axis of the micromixer, so that the channels of alternate layers intersect without communicating with each other, the cross-section of the channels decreases steadily from the entrance end to the exit end of the guide component so as to reduce the pressure losses of the fluid flowing through the channels for mixing in the mixing chamber.Type: GrantFiled: December 13, 2001Date of Patent: October 12, 2004Assignees: Forschungszentrum Karlsruhc GmbH, Bayer AGInventors: Klaus Schubert, Maximilian Fichtner, Georg Wiessmeier, Stephan Ehlers, Klaus Elgeti
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Patent number: 6780813Abstract: The invention relates to an improved method of producing double-metal cyanide (DMC) catalysts for the production of polyether polyols by polyaddition of alkylene oxides to starter compounds containing active hydrogen atoms, in which the DMC catalyst dispersion is produced using a mixing nozzle, preferably a jet disperser. The DMC catalysts produced in this way have an increased activity in polyether polyol production, reduced particle size and narrower particle size distribution.Type: GrantFiled: May 30, 2002Date of Patent: August 24, 2004Assignee: Bayer AktiengesellschaftInventors: Jörg Hofmann, Bernd Klinksiek, Stephan Ehlers, Thorsten Fechtel, Franz Föhles, Pieter Ooms
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Patent number: 6776925Abstract: The present invention relates to a process for the production of polyether polyols by polyaddition of alkylene oxides onto starter compounds containing active hydrogen atoms conducted in the presence of a double-metal cyanide catalyst wherein a reaction mixture is guided at least once through a zone which has an energy density of at least 105 J/m3 and wherein the residence time of the reaction mixture in this zone is at least 10−6 seconds per pass.Type: GrantFiled: February 19, 2002Date of Patent: August 17, 2004Assignees: Bayer Aktiengesellschaft, Bayer Polymers LLCInventors: Jörg Hofmann, Stephan Ehlers, Bernd Klinksiek, Lars Obendorf, Christian Steinlein, Bert Klesczewski, Jose F. Pazos
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Publication number: 20040064001Abstract: The present invention is directed to a process for preparing ethylene oxide-capped polyols which involves combining a double-metal cyanide-catalyzed polyol with a basic catalyst. The present invention is also directed to a process for preparing ethylene oxide-capped polyols which involves combining a double-metal cyanide-catalyzed polyol with a base-catalyzed polyol. The present invention is also directed to a process for preparing ethylene oxide-capped polyols in which removal of catalyst residues or salts formed by the neutralization of the basic catalyst is not required. The polyols produced by the processes of the present invention have a relatively high content of primary hydroxyl groups.Type: ApplicationFiled: September 30, 2002Publication date: April 1, 2004Inventors: Stephan Ehlers, Jose F. Pazos, Christian Steinlein, Michael Schneider, Jorg Hofmann, Majid Keyvani, John E. Hayes
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Patent number: 6670406Abstract: The present invention relates to a process for the production of a polyether polyol by polyaddition of an alkylene oxide onto a starter compound containing active hydrogen atoms conducted in the presence of a double metal cyanide catalyst comprising conducting a reaction mixture at least once through a zone which has an energy density of at least 5×106 J/m3, wherein the dwell time of the reaction mixture in this zone is at least 10−6 seconds per pass.Type: GrantFiled: February 19, 2002Date of Patent: December 30, 2003Assignees: Bayer Aktiengesellschaft, Bayer Polymers LLCInventors: Jörg Hofmann, Stephan Ehlers, Bernd Klinksiek, Bert Klesczewski, Christian Steinlein, Lars Obendorf, Harald Pielartzik, Jose F. Pazos
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Publication number: 20030158449Abstract: The invention provides an improved process for the preparation of double metal cyanide (DMC) catalysts for the preparation of polyether polyols by polyaddition of alkylene oxides on to starter compounds containing active hydrogen atoms, in which aqueous solutions of a metal salt and a metal cyanide salt are first reacted in the presence of an organic complexing ligand and optionally one or more further complex-forming components to form a DMC catalyst dispersion, this dispersion is then filtered, the filter cake is subsequently washed with one or more aqueous or non-aqueous solutions of the organic complexing ligand and optionally one or more further complex-forming components by a filter cake washing and the washed filter cake is finally dried, after an optional pressing out or mechanical removal of moisture.Type: ApplicationFiled: March 5, 2003Publication date: August 21, 2003Inventors: Jorg Hofmann, Stephan Ehlers, Bernd Klinksiek, Thorsten Fechtel, Matthias Ruhland, Jurgen Scholz, Franz Fohles, Ulrich Esser
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Publication number: 20020198278Abstract: The present invention relates to a process for the production of a polyether polyol by polyaddition of an alkylene oxide onto a starter compound containing active hydrogen atoms conducted in the presence of a double metal cyanide catalyst comprising conducting a reaction mixture at least once through a zone which has an energy density of at least 5×106 J/m3, wherein the dwell time of the reaction mixture in this zone is at least 10−6 seconds per pass.Type: ApplicationFiled: February 19, 2002Publication date: December 26, 2002Inventors: Jorg Hofmann, Stephan Ehlers, Bernd Klinksiek, Bert Klesczewski, Christian Steinlein, Lars Obendorf, Harald Pielartzik, Jose F. Pazos
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Patent number: 6486361Abstract: The invention relates to a process for the preparation of polyether polyols by means of double metal cyanide (DMC) catalysts, in which the induction phase is shortened markedly. By continuous dispensing of an alkylene oxide into the starter-catalyst mixture it is possible to achieve a substantial shortening of the induction phase by comparison with the batch-wise activation.Type: GrantFiled: March 20, 2002Date of Patent: November 26, 2002Assignee: Bayer AktiengesellschaftInventors: Stephan Ehlers, Jörg Hofmann, Manfred Dietrich, Pramod Gupta, Christian Steinlein, Horst Zwick
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Publication number: 20020169229Abstract: The present invention relates to a process for the production of polyether polyols by polyaddition of alkylene oxides onto starter compounds containing active hydrogen atoms conducted in the presence of a double-metal cyanide catalyst wherein a reaction mixture is guided at least once through a zone which has an energy density of at least 105 J/m3 and wherein the residence time of the reaction mixture in this zone is at least 10−6 seconds per pass.Type: ApplicationFiled: February 19, 2002Publication date: November 14, 2002Inventors: Jorg Hofmann, Stephan Ehlers, Bernd Klinksiek, Lars Obendorf, Christian Steinlein, Bert Klesczewski, Jose F. Pazos
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Publication number: 20020057627Abstract: In a static micromixer which comprises at least one mixing chamber and one guide component disposed upstream of the mixing chamber and which includes channels extending therethrough at an angle to the longitudinal axis of the micromixer, so that the channels of alternate layers intersect without communicating with each other, the cross-section of the channels decreases steadily from the entrance end to the exit end of the guide component so as to reduce the pressure losses of the fluid flowing through the channels for mixing in the mixing chamber.Type: ApplicationFiled: December 13, 2001Publication date: May 16, 2002Inventors: Klaus Schubert, Maximilian Fichtner, Georg Wiessmeier, Stephan Ehlers, Klaus Elgeti