Patents by Inventor Roman Prochazka
Roman Prochazka 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: 11303257Abstract: A current sensor integrated circuit to sense a current through a resistor includes a substrate, a tub disposed in the substrate, an analog front end disposed in the tub and comprising an amplifier having inputs coupled across the resistor and a charging circuit configured to bias the analog front end and the tub to a bias voltage that is a predetermined offset voltage greater than a common mode voltage associated with the resistor. In embodiments, the analog front end is biased to a first bias voltage and the tub is biased to a second, different bias voltage.Type: GrantFiled: March 27, 2019Date of Patent: April 12, 2022Assignee: Allegro MicroSystems, LLCInventors: Steven Daubert, David J. Haas, Craig S. Petrie, Milan Valenta, Roman Prochazka, Richard Stary, Sina Haji Alizad
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Patent number: 11047933Abstract: Magnetic field sensors and associated techniques use a Hall effect element in a current spinning arrangement in combination with a rippled reduction feedback network configured to reduce undesirable spectral components generated by the current spinning and other circuit elements.Type: GrantFiled: April 2, 2019Date of Patent: June 29, 2021Assignee: Allegro MicroSystems, LLCInventors: Hernán D. Romero, Roman Prochazka, Martin Drinovsky
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Patent number: 10873320Abstract: A filter circuit includes a filter having an input and an output at which an output of the filter is provided, a step detector coupled to receive an input signal at the input of the filter and configured to detect a predetermined step in the input signal and to assert a bypass signal in response to detection of the predetermined step. A logic circuit is responsive to the bypass signal and configured to cause the input signal to be coupled to the output of the filter without filtering when the bypass signal is asserted.Type: GrantFiled: April 26, 2019Date of Patent: December 22, 2020Assignee: Allegro MicroSystems, LLCInventor: Roman Procházka
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Publication number: 20200343879Abstract: A filter circuit includes a filter having an input and an output at which an output of the filter is provided, a step detector coupled to receive an input signal at the input of the filter and configured to detect a predetermined step in the input signal and to assert a bypass signal in response to detection of the predetermined step. A logic circuit is responsive to the bypass signal and configured to cause the input signal to be coupled to the output of the filter without filtering when the bypass signal is asserted.Type: ApplicationFiled: April 26, 2019Publication date: October 29, 2020Applicant: Allegro MicroSystems, LLCInventor: Roman Procházka
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Publication number: 20200319272Abstract: Magnetic field sensors and associated techniques use a Hall effect element in a current spinning arrangement in combination with a rippled reduction feedback network configured to reduce undesirable spectral components generated by the current spinning and other circuit elements.Type: ApplicationFiled: April 2, 2019Publication date: October 8, 2020Applicant: Allegro MicroSystems, LLCInventors: Hernán D. Romero, Roman Prochazka, Martin Drinovsky
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Publication number: 20200313637Abstract: A current sensor integrated circuit to sense a current through a resistor includes a substrate, a tub disposed in the substrate, an analog front end disposed in the tub and comprising an amplifier having inputs coupled across the resistor and a charging circuit configured to bias the analog front end and the tub to a bias voltage that is a predetermined offset voltage greater than a common mode voltage associated with the resistor. In embodiments, the analog front end is biased to a first bias voltage and the tub is biased to a second, different bias voltage.Type: ApplicationFiled: March 27, 2019Publication date: October 1, 2020Applicant: Allegro MicroSystems, LLCInventors: Steven Daubert, David J. Haas, Craig S. Petrie, Milan Valenta, Roman Prochazka, Richard Stary, Sina Haji Alizad
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Patent number: 10081580Abstract: The present invention relates to a process for preparing cyclohexane by isomerizing a hydrocarbon mixture (HM1) comprising methylcyclopentane (MCP) in the presence of a catalyst. The catalyst is preferably an acidic ionic liquid. The starting material used is a stream (S1) which originates from a steamcracking process. The hydrocarbon mixture (HM1) obtained from this stream (S1) in an apparatus for aromatics removal has a reduced aromatics content compared to stream (S1), and (HM1) may optionally also be (virtually) free of aromatics. Depending on the type and amount of the aromatics remaining in the hydrocarbon mixture (HM1), especially in the case that benzene is present, the isomerization may additionally be preceded by performance of a hydrogenation of (HM1). In addition, depending on the presence of other components of (HM1), further purification steps may optionally be performed prior to or after the isomerization or hydrogenation.Type: GrantFiled: October 15, 2013Date of Patent: September 25, 2018Assignee: BASF SEInventors: Steffen Tschirschwitz, Kathrin Wissel-Stoll, Jochen Bürkle, Albena Kostova, Markus Schmitt, Veronika Wloka, Stephan Deuerlein, Marco Bosch, Steffen Oehlenschläger, Michael Schreiber, Gauthier Luc Maurice Averlant, Joni Joni, Roman Prochazka, Martin Bock, Alois Kindler, Daniela Malkowsky, Katharina Spuhl, Stefan Bitterlich, Daniel Pfeiffer
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Patent number: 9864395Abstract: A current mirror circuit includes an input current leg and an output current leg. The input current leg includes: a first bipolar junction transistor (BJT) having a collector terminal configured to receive an input current sourced at a current node and a first metal oxide semiconductor field effect transistor (MOSFET) having a gate terminal coupled to the current node and a source terminal coupled to a base terminal of the first BJT. The output current leg includes: a second BJT having a collector terminal configured to supply an output current and a second MOSFET having a gate terminal coupled to the current node and a source terminal coupled to a base terminal of the second BJT.Type: GrantFiled: December 2, 2016Date of Patent: January 9, 2018Assignees: STMicroelectronics Asia Pacific Pte Ltd, STMicroelectronics Design and Application S.R.O.Inventors: Roman Prochazka, Chee Weng Cheong
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Publication number: 20160020627Abstract: A method of charging a battery of a device using a battery of a computer powered by the battery, in which the procedure is implemented by a circuit independent of the computer's processors. The method includes supplying a power supply voltage, insufficient to charge a battery, to a computer port, as long as a device is detected as connected to the port, controlling the supply of a charging voltage to the port, while supplying charging voltage to the port, detecting an end of charging condition of a battery of the device, and controlling the cutting off of the charging voltage to the port if the end of charging condition is detected, where this condition is determined according to the intensity of a charging current and according to a quantity of electrical charge supplied to the port and/or of a charging period.Type: ApplicationFiled: September 29, 2015Publication date: January 21, 2016Inventors: Christophe Lorin, Benedicte Micheau, Roman Prochazka, Vaclav Jelen, Ondrej Plachy
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Patent number: 9176567Abstract: A method of charging a battery of a device using a battery of a computer powered by the battery, in which the procedure is implemented by a circuit independent of the computer's processors. The method includes supplying a power supply voltage, insufficient to charge a battery, to a computer port, as long as a device is detected as connected to the port, controlling the supply of a charging voltage to the port, while supplying charging voltage to the port, detecting an end of charging condition of a battery of the device, and controlling the cutting off of the charging voltage to the port if the end of charging condition is detected, where this condition is determined according to the intensity of a charging current and according to a quantity of electrical charge supplied to the port and/or of a charging period.Type: GrantFiled: May 29, 2013Date of Patent: November 3, 2015Assignees: STMicroelectronics Design and Application S.R.O., STMicroelectronics (Grenoble 2) SASInventors: Christophe Lorin, Benedicte Micheau, Roman Prochazka, Vaclav Jelen, Ondrej Plachy
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Patent number: 9145347Abstract: The present invention relates to a process for preparing deodorized 1,2-propanediol, to the use of the purified propanediol and to an apparatus for performing the process.Type: GrantFiled: July 11, 2014Date of Patent: September 29, 2015Assignee: BASF SEInventors: Stephan Maurer, Roman Prochazka, Oliver Bey, Jochen Steiner, Jochem Henkelmann, Gerhard Theis, Peter Wahl, Frank Heimann
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Patent number: 8946490Abstract: The present invention relates to a process for preparing fatty alcohols, in which a stream comprising at least one fatty acid triglyceride is provided and this stream is subjected to a hydrogenation in the presence of a heterogeneous copper catalyst.Type: GrantFiled: May 19, 2010Date of Patent: February 3, 2015Assignee: BASF SEInventors: Daniela Mirk, Roman Prochazka, Jochem Henkelmann, Markus Hölzle, Daniela Herzberg
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Patent number: 8933262Abstract: The present invention relates to a process for preparing polyisocyanates from natural raw material sources, in which a composition comprising low molecular weight aromatics which comprise at least one hydroxy group or at least one alkoxy group per molecule (oxyaromatics) is produced from a biomass material, these oxyaromatics are converted into the corresponding aromatic amines and, optionally after condensation with formaldehyde, reacted further with phosgene to give compounds comprising isocyanate groups.Type: GrantFiled: May 24, 2012Date of Patent: January 13, 2015Assignee: BASF SEInventors: Eckhard Stroefer, Otto Machhammer, Stefan Bitterlich, Roman Prochazka, Mario Emmeluth, Julia Leschinski, Emmanouil Pantouflas, Dirk Klingler, Stephan Deuerlein, Stephan Schunk, Jochem Henkelmann, Dieter Stützer
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Publication number: 20140343329Abstract: The present invention relates to a process for preparing deodorized 1,2-propanediol, to the use of the purified propanediol and to an apparatus for performing the process.Type: ApplicationFiled: July 11, 2014Publication date: November 20, 2014Inventors: Stephan Maurer, Roman Prochazka, Oliver Bey, Jochen Steiner, Jochem Henkelmann, Gerhard Theis, Peter Wahl, Frank Heimann
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Patent number: 8809596Abstract: The present invention relates to a process for preparing deodorized 1,2-propanediol, to the use of the purified propanediol and to an apparatus for performing the process.Type: GrantFiled: January 19, 2010Date of Patent: August 19, 2014Assignee: BASF SEInventors: Stephan Maurer, Roman Prochazka, Oliver Bey, Jochen Steiner, Jochem Henkelmann, Gerhard Theis, Peter Wahl, Frank Heimann
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HYDROCARBON CONVERSION PROCESS IN THE PRESENCE OF AN ACIDIC IONIC LIQUID WITH UPSTREAM HYDROGENATION
Publication number: 20140128648Abstract: The present invention relates to a process for hydrocarbon conversion in the presence of an acidic ionic liquid. The hydrocarbon conversion is preferably an isomerization, especially an isomerization of methylcyclopentane (MOP) to cyclohexane. Prior to the hydrocarbon conversion, a hydrogenation is performed, preference being given to hydrogenating benzene to cyclohexane. The cyclohexane obtained in the hydrogenation and/or isomerization is preferably isolated from the process. In a preferred embodiment of the present invention, the hydrogenation is followed and the hydrocarbon conversion, especially the isomerization, is preceded by distillative removal of low boilers, especially C5-C6-alkanes such as cyclopentane or isohexanes, from the hydrocarbon mixture used for hydrocarbon conversion.Type: ApplicationFiled: October 15, 2013Publication date: May 8, 2014Applicant: BASF SEInventors: Roman Prochazka, Martin Bock, Steffen Tschirschwitz, Gauthier Luc Maurice Averlant, Joni Joni, Markus Schmitt, Katharina Spuhl, Jochen Bürkle, Alois Kindler, Daniela Malkowsky, Stefan Bitterlich, Michael Hübner -
Publication number: 20140114099Abstract: The present invention relates to a process for preparing cyclohexane by isomerizing a hydrocarbon mixture (HM1) comprising methylcyclopentane (MCP) in the presence of a catalyst. The catalyst is preferably an acidic ionic liquid. The starting material used is a stream (S1) which originates from a steamcracking process. The hydrocarbon mixture (HM1) obtained from this stream (S1) in an apparatus for aromatics removal has a reduced aromatics content compared to stream (S1), and (HM1) may optionally also be (virtually) free of aromatics. Depending on the type and amount of the aromatics remaining in the hydrocarbon mixture (HM1), especially in the case that benzene is present, the isomerization may additionally be preceded by performance of a hydrogenation of (HM1). In addition, depending on the presence of other components of (HM1), further purification steps may optionally be performed prior to or after the isomerization or hydrogenation.Type: ApplicationFiled: October 15, 2013Publication date: April 24, 2014Applicant: BASF SEInventors: Steffen Tschirschwitz, Kathrin Wissel-Stoll, Jochen Bürkle, Albena Kostova, Markus Schmitt, Veronika Wloka, Stephan Deuerlein, Marco Bosch, Steffen Oehlenschläger, Michael Schreiber, Gauthier Luc Maurice Averlant, Joni Joni, Roman Prochazka, Martin Bock, Alois Kindler, Daniela Malkowsky, Katharina Spuhl, Stefan Bitterlich, Daniel Pfeiffer
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Publication number: 20130326254Abstract: A method of charging a battery of a device using a battery of a computer powered by the battery, in which the procedure is implemented by a circuit independent of the computer's processors. The method includes supplying a power supply voltage, insufficient to charge a battery, to a computer port, as long as a device is detected as connected to the port, controlling the supply of a charging voltage to the port, while supplying charging voltage to the port, detecting an end of charging condition of a battery of the device, and controlling the cutting off of the charging voltage to the port if the end of charging condition is detected, where this condition is determined according to the intensity of a charging current and according to a quantity of electrical charge supplied to the port and/or of a charging period.Type: ApplicationFiled: May 29, 2013Publication date: December 5, 2013Inventors: Christophe Lorin, Benedicte Micheau, Roman Prochazka, Vaclav Jelen, Ondrej Plachy
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Publication number: 20120302786Abstract: The present invention relates to a process for preparing polyisocyanates from natural raw material sources, in which a composition comprising low molecular weight aromatics which comprise at least one hydroxy group or at least one alkoxy group per molecule (oxyaromatics) is produced from a biomass material, these oxyaromatics are converted into the corresponding aromatic amines and, optionally after condensation with formaldehyde, reacted further with phosgene to give compounds comprising isocyanate groups.Type: ApplicationFiled: May 24, 2012Publication date: November 29, 2012Applicant: BASF SEInventors: Eckhard Stroefer, Otto Machhammer, Stefan Bitterlich, Roman Prochazka, Mario Emmeluth, Julia Leschinski, Emmanouil Pantouflas, Dirk Klingler, Stephan Deuerlein, Stephan Schunk, Jochem Henkelmann, Dieter Stützer
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Patent number: 8293951Abstract: The present invention relates to a process for preparing 1,2-propanediol, in which a glycerol-containing stream, especially a stream obtained on the industrial scale in the production of biodiesel, is subjected to a hydrogenation in an at least three-stage reactor cascade.Type: GrantFiled: August 29, 2008Date of Patent: October 23, 2012Assignee: BASF SEInventors: Jochem Henkelmann, Roman Prochazka, Oliver Bey, Stephan Maurer, Jochen Steiner, Heiko Urtel, Gerhard Theis, Peter Wahl