Patents by Inventor Helmut Marx
Helmut Marx 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: 8182665Abstract: A sensor element is provided for gas sensors, in particular to determine particles in gas mixtures, the sensor element including at least one electrochemical measuring element exposed to the gas mixture to be determined, and at least one temperature-measuring element integrated into the sensor element. The temperature-measuring element includes a resistor track, which has an electric resistance of less than 180 Ohm at 0° C. The resistor track may thus be produced by thin-foil technology, such as screen printing, for example.Type: GrantFiled: October 20, 2006Date of Patent: May 22, 2012Assignee: Robert Bosch GmbHInventors: Lutz Dorfmueller, Sabine Roesch, Detlef Heimann, Stefan Rodewald, Helmut Marx, Henrico Runge, Harald Guenschel, Ralf Schmidt, Markus Siebert, Lothar Diehl, Thorsten Ochs, Juergen Sindel, Juergen Ruth, Andreas Schaak, Henrik Schittenhelm
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Patent number: 8122711Abstract: The invention concerns a procedure to ascertain a concentration of sooty particles in an exhaust gas system of an internal combustion engine or a depletion of an emission control system of the internal combustion engine due to the loading of sooty particles, whereby the sooty particle concentration in the exhaust gas system is determined by means of a collecting particle sensor, which emits a sensor signal and whereby the depletion of the emission control system due to the loading of sooty particles is determined from the sooty particle concentration. The task is thereby solved, in that the sensor signal is corrected by means of predetermined corrections with regard to a sensor temperature and/or an exhaust gas temperature and/or a flow velocity of the exhaust gas and/or a voltage applied at the particle sensor.Type: GrantFiled: September 4, 2007Date of Patent: February 28, 2012Assignee: Robert Bosch GmbHInventors: Ralf Schmidt, Helmut Marx, Henrik Schittenhelm
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Patent number: 8035404Abstract: A method is described for controlling the soot deposition on sensors. A sensor element is provided, which includes a first electrode and a second electrode. Different measuring voltages U1 and U2 can be applied to the sensor element. During a first time period t1, the sensor element is operated at a higher voltage U1 until a triggering threshold AP of the sensor element is exceeded, while it is operated at a voltage U2, which is different from higher voltage U1, U2 being lower than voltage U1, during a second time period t2.Type: GrantFiled: April 15, 2005Date of Patent: October 11, 2011Assignee: Robert Bosch GmbHInventors: Frank Schnell, Lutz Dorfmueller, Ralf Schmidt, Sabine Roesch, Helmut Marx, Henrik Schittenhelm
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Patent number: 7886578Abstract: A sensor element for gas sensors for determining the concentration of particulates in gas mixtures, in particular soot sensors having at least one first measuring electrode applied to an electrically insulating substrate and at least one second measuring electrode, a voltage being applicable to the first and second measuring electrodes. The first measuring electrode is at least partly covered by a porous material open to diffusion of the particles to be determined.Type: GrantFiled: July 18, 2005Date of Patent: February 15, 2011Assignee: Robert Bosch GmbHInventors: Ralf Schmidt, Markus Siebert, Sabine Roesch, Helmut Marx, Henrik Schittenhelm
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Patent number: 7872466Abstract: A sensor for determining the concentration of particles in gases, in particular of soot particles, has at least one substrate element, and a measuring area between at least one first and one second measuring electrode, the two measuring electrodes being configured so that by applying a voltage between the measuring electrodes, an asymmetric electric field is formed on the measuring area. The sides of the first and second measuring electrodes, facing one another, may not be parallel to one another, for example. Furthermore, at least one measuring electrode may have a structure along the side facing the other measuring electrode or along the finger electrodes.Type: GrantFiled: October 17, 2005Date of Patent: January 18, 2011Assignee: Robert Bosch GmbHInventors: Lutz Dorfmueller, Ralf Schmidt, Markus Siebert, Sabine Roesch, Helmut Marx, Henrik Schittenhelm, Gerd Teike
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Publication number: 20090217737Abstract: A sensor element is provided for gas sensors, in particular to determine particles in gas mixtures, the sensor element including at least one electrochemical measuring element exposed to the gas mixture to be determined, and at least one temperature-measuring element integrated into the sensor element. The temperature-measuring element includes a resistor track, which has an electric resistance of less than 180 Ohm at 0° C. The resistor track may thus be produced by thin-foil technology, such as screen printing, for example.Type: ApplicationFiled: October 20, 2006Publication date: September 3, 2009Applicant: ROBERT BOSCH GMBHInventors: Lutz Dorfmueller, Sabine Roesch, Detlef Heimann, Stefan Rodewald, Helmut Marx, Henrico Runge, Harald Guenschel, Ralf Schmidt, Markus Siebert, Lothar Diehl, Thorsten Ochs, Juergen Sindel, Juergen Ruth, Andreas Schaak, Henrik Schittenhelm
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Patent number: 7574895Abstract: A soot particle sensor for an exhaust system of an internal combustion engine includes a first electrode device and a second electrode device. The electrode devices are situated at a distance from one another and are able to be exposed to the gas stream, at least in some areas. It is provided that the electrode devices are separated from each other by an intermediate layer made of an electrically insulating material, and the electrode devices have free edges that are set apart from each other by the thickness of the intermediate layer and are able to be exposed to the gas stream.Type: GrantFiled: September 7, 2004Date of Patent: August 18, 2009Assignee: Robert Bosch GmbHInventors: Frank Schnell, Ralf Schmidt, Uwe Glanz, Sabine Rösch, Helmut Marx, Katharina Schaenzlin, Henrik Schittenhelm
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Publication number: 20090051376Abstract: A method is described for controlling the soot deposition on sensors. A sensor element is provided, which includes a first electrode and a second electrode. Different measuring voltages U1 and U2 can be applied to the sensor element. During a first time period t1, the sensor element is operated at a higher voltage U1 until a triggering threshold AP of the sensor element is exceeded, while it is operated at a voltage U2, which is different from higher voltage U1, U2 being lower than voltage U1, during a second time period t2.Type: ApplicationFiled: April 15, 2005Publication date: February 26, 2009Inventors: Frank Schnell, Lutz Dorfmueller, Ralf Schmidt, Sabine Roesch, Helmut Marx, Henrik Schittenhelm
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Publication number: 20080053067Abstract: The invention concerns a procedure to ascertain a concentration of sooty particles in an exhaust gas system of an internal combustion engine or a depletion of an emission control system of the internal combustion engine due to the loading of sooty particles, whereby the sooty particle concentration in the exhaust gas system is determined by means of a collecting particle sensor, which emits a sensor signal and whereby the depletion of the emission control system due to the loading of sooty particles is determined from the sooty particle concentration. The task is thereby solved, in that the sensor signal is corrected by means of predetermined corrections with regard to a sensor temperature and/or an exhaust gas temperature and/or a flow velocity of the exhaust gas and/or a voltage applied at the particle sensor.Type: ApplicationFiled: September 4, 2007Publication date: March 6, 2008Applicant: Robert Bosch GmbHInventors: Ralf Schmidt, Helmut Marx, Henrik Schittenhelm
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Publication number: 20080047847Abstract: A sensor element for gas sensors for determining the concentration of particulates in gas mixtures, in particular soot sensors having at least one first measuring electrode applied to an electrically insulating substrate and at least one second measuring electrode, a voltage being applicable to the first and second measuring electrodes. The first measuring electrode is at least partly covered by a porous material open to diffusion of the particles to be determined.Type: ApplicationFiled: July 18, 2005Publication date: February 28, 2008Applicant: ROBERT BOSCH GMBHInventors: Ralf Schmidt, Markus Siebert, Sabine Roesch, Helmut Marx, Henrik Schittenhelm
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Publication number: 20080024111Abstract: A sensor for determining the concentration of particles in gases, in particular of soot particles, has at least one substrate element, and a measuring area between at least one first and one second measuring electrode, the two measuring electrodes being configured so that by applying a voltage between the measuring electrodes, an asymmetric electric field is formed on the measuring area. The sides of the first and second measuring electrodes, facing one another, may not be parallel to one another, for example. Furthermore, at least one measuring electrode may have a structure along the side facing the other measuring electrode or along the finger electrodes.Type: ApplicationFiled: October 17, 2005Publication date: January 31, 2008Inventors: Lutz Dorfmueller, Ralf Schmidt, Markus Siebert, Sabine Roesch, Helmut Marx, Henrik Schittenhelm, Gerd Teike
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Publication number: 20070119233Abstract: A soot particle sensor for an exhaust system of an internal combustion engine includes a first electrode device and a second electrode device. The electrode devices are situated at a distance from one another and are able to be exposed to the gas stream, at least in some areas. It is provided that the electrode devices are separated from each other by an intermediate layer made of an electrically insulating material, and the electrode devices have free edges that are set apart from each other by the thickness of the intermediate layer and are able to be exposed to the gas stream.Type: ApplicationFiled: September 7, 2004Publication date: May 31, 2007Inventors: Frank Schnell, Ralf Schmidt, Uwe Glanz, Sabine Rosch, Helmut Marx, Katharina Schaenzlin, Henrik Schittenhelm
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Patent number: 4574674Abstract: A shearing machine for cutting up material of any kind comprises a shearing blade carrier which is vertically slidable in a closed frame, being moved by a cylinder-piston assembly fixed in a crosshead of the frame. In order to simplify assembly and dismantling of the cylinder, the cylinder which is fixed in the crosshead, is supported against reaction forces from the blade carrier towards the crosshead by a divided ring on the side of the crosshead facing towards the blade carrier, the divided ring, engaging in a circumferential recess in the outside of the cylinder surface and also partly into an opening in the side of the crosshead facing towards the blade carrier and the cylinder is also fixed, on the side of the crosshead remote from the blade carrier by a second ring which bears against the crosshead with a prestress so that the cylinder is held under tension in the crosshead between the two rings.Type: GrantFiled: March 23, 1984Date of Patent: March 11, 1986Assignee: Lindemann Maschinenfabrik GmbHInventor: Helmut Marx
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Patent number: 4053420Abstract: A blood filter for removing dead blood corpuscles, conglomerations of blood orpuscles and foreign components from the blood comprises dense wadding formed from a plastics monofilament or a bundle of long plastics threads.Type: GrantFiled: April 12, 1976Date of Patent: October 11, 1977Assignee: Dr. Eduard Fresenius Chemisch-Pharmazeutische Industrie KG.Inventor: Gunter Helmut Marx