Patents by Inventor Stéphanie Frantz
Stéphanie Frantz 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: 9051857Abstract: Proposed is a diesel particle filter which comprises a ceramic wall-flow filter substrate and a coating applied in the inflow ducts, which coating is composed of material with a high melting point. The coating (6) is provided such that, by means of said coating, pores (5), which connect the inflow ducts (1) and outflow ducts (2), in the wall (4) are closed off for the soot particles (7) at the inflow side without said coating thereby preventing the passage of the gaseous exhaust-gas constituents. The coating may be produced from one or more oxides with a high melting point or from fibrous material with a high melting point. In both cases, the coating has the effect that the depth filtration is considerably reduced, and therefore the back pressure increase encountered during the depth filtration phase is significantly reduced.Type: GrantFiled: September 11, 2009Date of Patent: June 9, 2015Assignee: UNICORE AG & CO. KGInventors: Franz Dornhaus, Stéphanie Frantz, Gerald Jeske
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Patent number: 9011783Abstract: The invention relates to a catalyst for purifying the exhaust gases from diesel engines, in particular an oxidation catalyst which is particularly well suited for the purification of exhaust gases from heavy goods vehicles when further exhaust gas purification units such as a particle filter and/or a nitrogen oxide reduction catalyst are installed downstream thereof. The catalyst contains two catalytically active coatings which have different compositions and of which only one is in direct contact with the outflowing exhaust gas. The coating (1) which is in direct contact with the outflowing exhaust gas is platinum-rich and contains a total amount of noble metal (platinum and palladium) which is greater than that in the coating (2) which is not in direct contact with the outflowing exhaust gas.Type: GrantFiled: November 12, 2009Date of Patent: April 21, 2015Assignee: Umicore AG & Co. KGInventors: Frank-Walter Schuetze, Stéphanie Frantz, Gerald Jeske, Christoph Hengst
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Patent number: 8984866Abstract: An exhaust gas post treatment system for an internal combustion engine, including an intake device for taking hydrocarbons into an exhaust gas pipe carrying the exhaust process gas from the internal combustion engine and a treatment device through which exhaust process gas flows downstream of the intake location and which increases the exhaust process gas temperature by oxidation of the hydrocarbons taken in. An exhaust gas post treatment system and a method for operating the same, in that the treatment device has catalytically coated components, the hydrocarbons are at least partly evaporated in the intake device and are modified chemically by cracking reactions and/or by partial oxidation, and the proportion of platinum, at least in a subregion of the catalytic coating of the components, is less than 50% of the overall mass of all the catalytically active substances in this sub region of the coating.Type: GrantFiled: May 28, 2010Date of Patent: March 24, 2015Assignees: Umicore AG & Co. KG, Deutz AGInventors: Rolf Miebach, Stephan Schraml, Peter Broll, Andreas Geisselmann, Stefan De Buhr, Stéphanie Frantz, Anke Woerz, Frank-Walter Schuetze
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Patent number: 8932546Abstract: A catalytically active particulate filter is proposed which is suitable for use in an exhaust gas cleaning system for diesel engines. The particulate filter removes diesel soot particles from the exhaust gas and is also effective to oxidize carbon monoxide and hydrocarbons and to convert nitrogen monoxide at least proportionally into nitrogen dioxide. The particulate filter comprises a filter body (3) and two catalytically active coatings (1) and (2) which contain platinum and palladium, or platinum or palladium respectively, wherein the platinum content of the second catalytically active coating (2) is higher than the platinum content of the first catalytically active coating (1).Type: GrantFiled: January 29, 2013Date of Patent: January 13, 2015Assignee: Umicore AG & Co. KGInventors: Stephanie Frantz, Ulrich Goebel, Franz Dornhaus, Michael Schiffer
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Patent number: 8709365Abstract: The invention relates to a catalytically active particulate filter which, in addition to the properties typical of particulate filters, has hydrogen sulphide block function, and to a process for removing nitrogen oxides and particulates from the exhaust gas of internal combustion engines operated predominantly under lean conditions (so-called “lean-burn engines”) using the inventive catalytically active particulate filter. This particulate filter comprises a filter body, a copper compound and an oxidation-catalytic active coating which comprises at least one catalytically active platinum group metal. The copper compound is in a second coating applied to the filter body. The two functional coatings may be applied to the filter body consecutive in the direction of flow, i.e. zoned, or layered one on top of the other.Type: GrantFiled: July 8, 2010Date of Patent: April 29, 2014Assignee: Umicore AG & Co. KGInventors: Franz Dornhaus, Stephanie Frantz, Ina Grisstede
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Patent number: 8445403Abstract: An oxidation catalyst is described for the exhaust gas purification of utility vehicles with diesel engines, which contains a substrate and a catalytically active coating of platinum, active aluminum oxide and aluminum-silicon mixed oxide. The two oxidic support materials, aluminum oxide and aluminum-silicon mixed oxide, are catalytically activated with platinum, the majority of platinum being present on the active aluminum oxide. The oxidation catalyst is distinguished by good NO oxidation rates together with a high poisoning resistance against sulfur compounds.Type: GrantFiled: June 9, 2009Date of Patent: May 21, 2013Assignee: Umicore AG & Co. KGInventors: Stéphanie Frantz, Frank-Walter Schuetze, Anke Woerz, Gerald Jeske
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Publication number: 20120213674Abstract: The invention relates to a catalyst for purifying the exhaust gases from diesel engines, in particular an oxidation catalyst which is particularly well suited for the purification of exhaust gases from heavy goods vehicles when further exhaust gas purification units such as a particle filter and/or a nitrogen oxide reduction catalyst are installed downstream thereof. The catalyst contains two catalytically active coatings which have different compositions and of which only one is in direct contact with the outflowing exhaust gas. The coating (1) which is in direct contact with the outflowing exhaust gas is platinum-rich and contains a total amount of noble metal (platinum and palladium) which is greater than that in the coating (2) which is not in direct contact with the outflowing exhaust gas.Type: ApplicationFiled: November 12, 2009Publication date: August 23, 2012Applicant: UMICORE AG & CO. KGInventors: Frank-Walter Schuetze, Stéphanie Frantz, Gerald Jeske, Christoph Hengst
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Patent number: 8226914Abstract: Soot filters for removing soot from the exhaust gas of lean-burn engines become blocked with progressive operating duration on account of the deposition of soot, and must therefore be regenerated at regular intervals. It has been found that reliable operation of the soot filter is possible only if an active regeneration is carried out from time to time by increasing the exhaust-gas temperature to the soot ignition temperature. For this purpose, an oxidation catalytic converter is usually arranged upstream of the soot filter, and the exhaust-gas temperature is increased by means of the catalytic combustion of additionally injected fuel. Here, the oxidation catalytic converter is subjected to high temperature loading and therefore ages very quickly.Type: GrantFiled: February 20, 2008Date of Patent: July 24, 2012Assignee: Umicore AG & Co. KGInventors: Paul Spurk, Stèphanie Frantz, Thomas Le Tallec, Olivier Teysset, Wilfried Mueller, Gerald Jeske
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Publication number: 20120117949Abstract: The invention relates to an exhaust gas post treatment system for an internal combustion engine, including an intake device for taking hydrocarbons into an exhaust gas pipe carrying the exhaust process gas from the internal combustion engine and a treatment device through which exhaust process gas flows downstream of the intake location and which increases the exhaust process gas temperature by means of oxidation of the hydrocarbons taken in. The invention specifies an exhaust gas post treatment system and a method for operating such an exhaust gas post treatment system which can be implemented cost-effectively.Type: ApplicationFiled: May 28, 2010Publication date: May 17, 2012Inventors: Rolf Miebach, Stephan Schraml, Peter Broll, Andreas Geisselmann, Stefan De Buhr, Stéphanie Frantz, Anke Woerz, Frank-Walter Schuetze
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Publication number: 20120014842Abstract: Proposed is a diesel particle filter which comprises a ceramic wall-flow filter substrate and a coating applied in the inflow ducts, which coating is composed of material with a high melting point. The coating (6) is provided such that, by means of said coating, pores (5), which connect the inflow ducts (1) and outflow ducts (2), in the wall (4) are closed off for the soot particles (7) at the inflow side without said coating thereby preventing the passage of the gaseous exhaust-gas constituents. The coating may be produced from one or more oxides with a high melting point or from fibrous material with a high melting point. In both cases, the coating has the effect that the depth filtration is considerably reduced, and therefore the back pressure increase encountered during the depth filtration phase is significantly reduced.Type: ApplicationFiled: September 11, 2009Publication date: January 19, 2012Applicant: UMICORE AG & Co. KGInventors: Franz Dornhaus, Stéphanie Frantz, Gerald Jeske
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Publication number: 20110229392Abstract: An oxidation catalyst is described for the exhaust gas purification of utility vehicles with diesel engines, which contains a substrate and a catalytically active coating of platinum, active aluminium oxide and aluminium-silicon mixed oxide. The two oxidic support materials, aluminium oxide and aluminium-silicon mixed oxide, are catalytically activated with platinum, the majority of platinum being present on the active aluminium oxide. The oxidation catalyst is distinguished by good NO oxidation rates together with a high poisoning resistance against sulfur compounds.Type: ApplicationFiled: June 9, 2009Publication date: September 22, 2011Applicant: UMICORE AG & CO. KGInventors: Stéphanie Frantz, Frank-Walter Schuetze, Anke Woerz, Gerald Jeske
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Patent number: 7922987Abstract: A diesel particulate filter with an oxidation catalyst comprising platinum and palladium deposited thereon is described. Addition of HC storage components to the oxidation catalyst allows the conversion of hydrocarbons and carbon monoxide to be improved significantly.Type: GrantFiled: August 17, 2007Date of Patent: April 12, 2011Assignee: Umicore AG & Co. KGInventors: Markus Koegel, Marcus Pfeifer, Gerald Jeske, Frank Walter Schuetze, Stéphanie Frantz, Thomas Kreuzer
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Publication number: 20110014099Abstract: The invention relates to a catalytically active particulate filter which, in addition to the properties typical of particulate filters, has hydrogen sulphide block function, and to a process for removing nitrogen oxides and particulates from the exhaust gas of internal combustion engines operated predominantly under lean conditions (so-called “lean-burn engines”) using the inventive catalytically active particulate filter. This particulate filter comprises a filter body, a copper compound and an oxidation-catalytic active coating which comprises at least one catalytically active platinum group metal. The copper compound is in a second coating applied to the filter body. The two functional coatings may be applied to the filter body consecutive in the direction of flow, i.e. zoned, or layered one on top of the other.Type: ApplicationFiled: July 8, 2010Publication date: January 20, 2011Applicant: UMICORE AG & CO.KGInventors: Franz DORNHAUS, Stephanie Frantz, Ina Grisstede
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Publication number: 20100095658Abstract: Soot filters for removing soot from the exhaust gas of lean-burn engines become blocked with progressive operating duration on account of the deposition of soot, and must therefore be regenerated at regular intervals. It has been found that reliable operation of the soot filter is possible only if an active regeneration is carried out from time to time by increasing the exhaust-gas temperature to the soot ignition temperature. For this purpose, an oxidation catalytic converter is usually arranged upstream of the soot filter, and the exhaust-gas temperature is increased by means of the catalytic combustion of additionally injected fuel. Here, the oxidation catalytic converter is subjected to high temperature loading and therefore ages very quickly.Type: ApplicationFiled: February 20, 2008Publication date: April 22, 2010Applicant: Umicore AG & Co. KGInventors: Paul Spurk, Stéphanie Frantz, Thomas Le Tallec, Olivier Teysset, Wilfried Mueller, Gerald Jeske
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Publication number: 20100092358Abstract: A diesel particulate filter with an oxidation catalyst comprising platinum and palladium deposited thereon is described. Addition of HC storage components to the oxidation catalyst allows the conversion of hydrocarbons and carbon monoxide to be improved significantly.Type: ApplicationFiled: August 17, 2007Publication date: April 15, 2010Applicant: UMICORE AG & CO.KGInventors: Markus Koegel, Marcus Pfeifer, Gerald Jeske, Frank Walter Schuetze, Stéphanie Frantz, Thomas Kreuzer