Patents by Inventor Andreas Kempe

Andreas Kempe 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).

  • Patent number: 10816525
    Abstract: A method using a gas reservoir and a critical nozzle for determining physical properties and/or quantities relevant to combustion of gas or gas mixtures, the method includes: flowing a gas or gas mixture under pressure from the gas reservoir through the critical nozzle; measuring pressure drop in the gas reservoir as a function of time; determining a gas property factor (?*), dependent on physical properties of the gas or gas mixture, based on the measured values of the pressure drop; and determining a desired physical property or quantity relevant to combustion based on the gas property factor (?*) through correlation.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: October 27, 2020
    Assignee: MEMS AG
    Inventors: Philippe Pretre, Andreas Kempe, Tobias Suter
  • Patent number: 10505207
    Abstract: A method for the combined controlled regulation of fuel gas-oxygen carriers of a gas operated energy converter plant (15), in particular of a fuel cell plant, is provided in which the mass or volume through flow of the fuel gas (1) and/or of the oxygen carrier (2) is detected in order to regulate the mixing ratio (r) of fuel gas to oxygen carrier. In the method at least two physical parameters of the fuel gas are additionally determined using a micro thermal sensor (3.1, 3.2), for example, the mass flow and/or volume through flow of the fuel gas and the thermal conductivity or thermal capacity of the fuel gas are determined and a desired value for the mixing ratio is determined from the physical parameters which depends on the fuel gas or on the composition of the fuel gas, and which desired value is used for the regulation of the mixing ratio.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: December 10, 2019
    Assignee: Hexis AG
    Inventors: Roland Denzler, Philippe Pretre, Andreas Kempe
  • Patent number: 10371678
    Abstract: A method in which a gas property (Q) is determined by correlation from physical measuring quantities (?j) of the gas mixtures. In the method, the physical measuring quantities are combined into a sensor output (Sout) by making use of a sensor output function (ƒ), wherein the sensor output function is determined in such a way that a group of gas mixtures can be separated from a set of gas mixtures for which the gas property (Q) is determined, within which the correlation between the sensor output (Sout) and the desired gas property (Q) is better than in the entire set.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: August 6, 2019
    Assignee: MEMS AG
    Inventors: Philippe Pretre, Andreas Kempe
  • Publication number: 20170261480
    Abstract: A method using a gas reservoir and a critical nozzle for determining physical properties and/or quantities relevant to combustion of gas or gas mixtures, the method includes: flowing a gas or gas mixture under pressure from the gas reservoir through the critical nozzle; measuring pressure drop in the gas reservoir as a function of time; determining a gas property factor (?*), dependent on physical properties of the gas or gas mixture, based on the measured values of the pressure drop; and determining a desired physical property or quantity relevant to combustion based on the gas property factor (?*) through correlation.
    Type: Application
    Filed: May 31, 2017
    Publication date: September 14, 2017
    Inventors: Philippe PRETRE, Andreas KEMPE, Tobias SUTER
  • Publication number: 20170176405
    Abstract: A method to determine a physical property or a quantity of gas related to combustion including: flowing a gas from a reservoir through a critical nozzle and past a microthermal sensor wherein the mass flow of the gas through the critical nozzle is the same as the mass flow through the microthermal sensor; measuring the pressure drop in the reservoir as a function of time; deriving a first gas property factor based on a time constant of the pressure drop; determining a second gas property factor which depends from a flow signal generated by the microthermal sensor; determining a thermal conductivity of the gas; and determining the physical property or quantity based on a correlation between the physical property or quantity, and the first and/or second gas property factors and the thermal conductivity.
    Type: Application
    Filed: March 1, 2017
    Publication date: June 22, 2017
    Inventors: Philippe PRETRE, Andreas KEMPE, TOBIAS SUTER
  • Publication number: 20170176402
    Abstract: A method in which a gas property (Q) is determined by correlation from physical measuring quantities (?j) of the gas mixtures. In the method, the physical measuring quantities are combined into a sensor output (Sout) by making use of a sensor output function (ƒ), wherein the sensor output function is determined in such a way that a group of gas mixtures can be separated from a set of gas mixtures for which the gas property (Q) is determined, within which the correlation between the sensor output (Sout) and the desired gas property (Q) is better than in the entire set.
    Type: Application
    Filed: December 14, 2016
    Publication date: June 22, 2017
    Inventors: Philippe Pretre, Andreas Kempe
  • Patent number: 9612229
    Abstract: A method for determining physical properties of combustion including: flowing a gas a critical nozzle and past a microthermal sensor wherein the mass flow of the gas through the critical nozzle is the same as the mass flow through the microthermal sensor; measuring the pressure drop in a reservoir of gas flowing to the nozzle; determining a first gas property factor based on the measured pressure drop; determining a second gas property factor based on a flow signal generated by the microthermal sensor; determining a thermal conductivity of the gas using the microthermal sensor; and determining a physical property of the combustion based on a correlation of the first and/or second gas property factors and the thermal conductivity.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: April 4, 2017
    Assignee: MEMS AG
    Inventors: Philippe Pretre, Andreas Kempe, Tobias Suter
  • Publication number: 20140356751
    Abstract: A method for the combined controlled regulation of fuel gas-oxygen carriers of a gas operated energy converter plant (15), in particular of a fuel cell plant, is provided in which the mass or volume through flow of the fuel gas (1) and/or of the oxygen carrier (2) is detected in order to regulate the mixing ratio (r) of fuel gas to oxygen carrier. In the method at least two physical parameters of the fuel gas are additionally determined using a micro thermal sensor (3.1, 3.2), for example, the mass flow and/or volume through flow of the fuel gas and the thermal conductivity or thermal capacity of the fuel gas are determined and a desired value for the mixing ratio is determined from the physical parameters which depends on the fuel gas or on the composition of the fuel gas, and which desired value is used for the regulation of the mixing ratio.
    Type: Application
    Filed: May 29, 2014
    Publication date: December 4, 2014
    Applicants: Hexis AG, MEMS AG
    Inventors: Roland Denzler, Philippe Pretre, Andreas Kempe
  • Publication number: 20140345363
    Abstract: A method for determining physical properties of combustion including: flowing a gas a critical nozzle and past a microthermal sensor wherein the mass flow of the gas through the critical nozzle is the same as the mass flow through the microthermal sensor; measuring the pressure drop in a reservoir of gas flowing to the nozzle; determining a first gas property factor based on the measured pressure drop; determining a second gas property factor based on a flow signal generated by the microthermal sensor; determining a thermal conductivity of the gas using the microthermal sensor; and determining a physical property of the combustion based on a correlation of the first and/or second gas property factors and the thermal conductivity.
    Type: Application
    Filed: May 20, 2014
    Publication date: November 27, 2014
    Inventors: Philippe PRETRE, Andreas KEMPE, Tobias SUTER
  • Publication number: 20140230519
    Abstract: A method for correcting offset drift effects of a thermal measurement device (10) which comprises at least one temperature sensor (15a, 15b) arranged at a defined distance from a heating device (12) for a fluid to be measured, for measuring at least one measurement variable describing the temperature and/or temperature profile during operation of the heating device (12), in which a reference measured value (35) is measured at a reference time in a first measurement of the measurement variable with the heating device (12) turned off, in which a drift measured value (36) is measured at at least one later time in a second measurement of the measurement variable with the heating device (12) turned off, and in which a drift correction is carried out during the measurement by using the heating device (12) on the basis of a difference between the drift measured value (36) and the reference measured value (35).
    Type: Application
    Filed: April 24, 2014
    Publication date: August 21, 2014
    Applicant: HYDROMETER GMBH
    Inventors: Thomas KLEINER, Philippe PRETRE, Andreas KEMPE, Hans-Michael SONNENBERG
  • Patent number: 7400418
    Abstract: It is disclosed a method and an apparatus of determining the distance (D) between a collimator lens (13) and an object. Low-coherence light is emitted from a light source (1) and directed the low-coherence light through a collimator lens (13) to the object. The reflected light from the collimator lens (13) and the object is directed to a beam splitter (4) and split into two beams. Within the reference arm the frequency of the beam is shifted by an acousto-optical modulator (5) to a certain frequency and within the delay arm the time delay of the beam is scanned by a variable delay line (7). After combining both beams in a beam combiner (8), the presence of a frequency component equal to the frequency shift of the acousto-optical modulator (5) is detected and the distance (D) between the collimator lens (13) and the object is calculated.
    Type: Grant
    Filed: July 20, 2005
    Date of Patent: July 15, 2008
    Assignee: Alstom Technology Ltd
    Inventors: Ken-Yves Haffner, Andreas Kempe, Thomas Roesgen, Stefan Schlamp
  • Publication number: 20060002789
    Abstract: It is disclosed a method and an apparatus of determining the distance (D) between a collimator lens (13) and an object. Low-coherence light is emitted from a light source (1) and directed the low-coherence light through a collimator lens (13) to the object. The reflected light from the collimator lens (13) and the object is directed to a beam splitter (4) and split into two beams. Within the reference arm the frequency of the beam is shifted by an acousto-optical modulator (5) to a certain frequency and within the delay arm the time delay of the beam is scanned by a variable delay line (7). After combining both beams in a beam combiner (8), the presence of a frequency component equal to the frequency shift of the acousto-optical modulator (5) is detected and the distance (D) between the collimator lens (13) and the object is calculated.
    Type: Application
    Filed: July 20, 2005
    Publication date: January 5, 2006
    Applicant: ALSTOM TECHNOLOGY LTD
    Inventors: Ken-Yves Haffner, Andreas Kempe, Thomas Roesgen, Stefan Schlamp