Patents by Inventor Saroj Sahu
Saroj Sahu 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: 11404728Abstract: A system includes a first optical sensor sensitive to both a parameter of interest, Parameter1, and at least one confounding parameter, Parameter2 and a second optical sensor sensitive only to the confounding parameter. Measurement circuitry measures M1 in response to light scattered by the first optical sensor, where M1=value of Parameter1+K*value of Parameter2. The measurement circuitry also measures M2 in response to light scattered by the second optical sensor, where M2=value of Parameter2. Compensation circuitry determines a compensation factor, K, for the confounding parameter based on measurements of M1 and M2 taken over multiple load/unload cycles or over one or more thermal cycles. The compensation factor is used to determine the parameter of interest.Type: GrantFiled: November 30, 2020Date of Patent: August 2, 2022Assignee: PALO ALTO RESEARCH CENTER INCORPORATEDInventors: Anurag Ganguli, Julian Schwartz, Ajay Raghavan, Peter Kiesel, Bhaskar Saha, Saroj Sahu, Lars Wilko Sommer
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Publication number: 20210167427Abstract: A system includes a first optical sensor sensitive to both a parameter of interest, Parameter1, and at least one confounding parameter, Parameter2 and a second optical sensor sensitive only to the confounding parameter. Measurement circuitry measures M1 in response to light scattered by the first optical sensor, where M1=value of Parameter1+K*value of Parameter2. The measurement circuitry also measures M2 in response to light scattered by the second optical sensor, where M2=value of Parameter2. Compensation circuitry determines a compensation factor, K, for the confounding parameter based on measurements of M1 and M2 taken over multiple load/unload cycles or over one or more thermal cycles. The compensation factor is used to determine the parameter of interest.Type: ApplicationFiled: November 30, 2020Publication date: June 3, 2021Inventors: Anurag Ganguli, Julian Schwartz, Ajay Raghavan, Peter Kiesel, Bhaskar Saha, Saroj Sahu, Lars Wilko Sommer
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Patent number: 10854932Abstract: A system includes a first optical sensor sensitive to both a parameter of interest, Parameter1, and at least one confounding parameter, Parameter2 and a second optical sensor sensitive only to the confounding parameter. Measurement circuitry measures M1 in response to light scattered by the first optical sensor, where M1=value of Parameter1+K*value of Parameter2. The measurement circuitry also measures M2 in response to light scattered by the second optical sensor, where M2=value of Parameter2. Compensation circuitry determines a compensation factor, K, for the confounding parameter based on measurements of M1 and M2 taken over multiple load/unload cycles or over one or more thermal cycles. The compensation factor is used to determine the parameter of interest.Type: GrantFiled: July 28, 2015Date of Patent: December 1, 2020Assignee: Palo Alto Research Center IncorporatedInventors: Anurag Ganguli, Julian Schwartz, Ajay Raghavan, Peter Kiesel, Bhaskar Saha, Saroj Sahu, Lars Wilko Sommer
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Patent number: 10777855Abstract: A battery includes a folded bicell battery stack with an embedded fiber optic cable and sensor. A cell casing encloses the bicell stack with at least one fiber optic cable is embedded within the battery. The fiber optic cable includes an internal portion disposed within the cell casing and having at least one optical sensor disposed thereon. An external portion of the fiber optic cable protrudes from the casing. A sealing gasket is disposed at least partially around the fiber optic cable and between the cell sealing edges at a point of entry of the fiber optic cable into the battery.Type: GrantFiled: September 3, 2019Date of Patent: September 15, 2020Assignee: Palo Alto Research Center IncorporatedInventors: Ajay Raghavan, Peter Kiesel, Lars Wilko Sommer, Bhaskar Saha, Saroj Sahu, Alexander Lochbaum, Tobias Staudt, Chang-Jun Bae, Mohamed Alamgir, Hoe Jin Hah, Bokkyu Choi, Gyu-Ok Hwang, Geun-Chang Chung
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Publication number: 20200006818Abstract: A battery includes a folded bicell battery stack with an embedded fiber optic cable and sensor. A cell casing encloses the bicell stack with at least one fiber optic cable is embedded within the battery. The fiber optic cable includes an internal portion disposed within the cell casing and having at least one optical sensor disposed thereon. An external portion of the fiber optic cable protrudes from the casing. A sealing gasket is disposed at least partially around the fiber optic cable and between the cell sealing edges at a point of entry of the fiber optic cable into the battery.Type: ApplicationFiled: September 3, 2019Publication date: January 2, 2020Inventors: Ajay Raghavan, Peter Kiesel, Lars Wilko Sommer, Bhaskar Saha, Saroj Sahu, Alexander Lochbaum, Tobias Staudt, Chang-Jun Bae, Mohamed Alamgir, Hoe Jin Hah, Bokkyu Choi, Gyu-Ok Hwang, Geun-Chang Chung
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Patent number: 10516181Abstract: An electrolyte membrane for a reformer-less fuel cell is provided. The electrolyte membrane is assembled with fuel and air manifolds to form the fuel cell. The fuel manifold receives an oxidizable fuel from a fuel supply in a gaseous, liquid, or slurry form. The air manifold receives air from an air supply. The electrolyte membrane conducts oxygen in an ionic superoxide form when the fuel cell is exposed to operating temperatures above the boiling point of water to electrochemically combine the oxygen with the fuel to produce electricity. The electrolyte membrane includes a porous electrically non-conductive substrate, an anode catalyst layer deposited along a fuel manifold side of the substrate, a cathode catalyst layer deposited along an air manifold side of the substrate, and an ionic liquid filling the substrate between the anode and cathode catalyst layers. Methods for manufacturing and operating the electrolyte membrane are also provided.Type: GrantFiled: August 28, 2014Date of Patent: December 24, 2019Assignee: PALO ALTO RESEARCH CENTER INCORPORATEDInventor: Saroj Sahu
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Patent number: 10446886Abstract: A battery includes a folded bicell battery stack with an embedded fiber optic cable and sensor. A cell casing encloses the bicell stack with at least one fiber optic cable is embedded within the battery. The fiber optic cable includes an internal portion disposed within the cell casing and having at least one optical sensor disposed thereon. An external portion of the fiber optic cable protrudes from the casing. A sealing gasket is disposed at least partially around the fiber optic cable and between the cell sealing edges at a point of entry of the fiber optic cable into the battery.Type: GrantFiled: July 23, 2014Date of Patent: October 15, 2019Assignee: Palo Alto Research Center IncorporatedInventors: Ajay Raghavan, Peter Kiesel, Lars Wilko Sommer, Bhaskar Saha, Saroj Sahu, Alexander Lochbaum, Tobias Staudt, Chang-Jun Bae, Mohamed Alamgir, Hoe Jin Hah, Bokkyu Choi, Gyu-Ok Hwang, Geun-Chang Chung
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Patent number: 10403922Abstract: A method of fabricating an electrochemical energy storage cell such as a battery or supercapacitor involves positioning a portion of a fiber optic cable that includes at least one optical fiber sensor over a current collector layer. The electrode material of the energy storage cell is deposited over the current collector layer and the fiber optic cable.Type: GrantFiled: July 23, 2014Date of Patent: September 3, 2019Assignee: Palo Alto Research Center IncorporatedInventors: Chang-Jun Bae, Eric J. Shrader, Ajay Raghavan, Peter Kiesel, Saroj Sahu
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Patent number: 10135292Abstract: A system for simultaneously charging an energy storage device from multiple energy input devices includes energy input devices in the form of solar and non-solar modules and an energy storage device in the form of a rechargeable battery, which is part of an energy storage module. A first solar module is able to generate solar power and delivers this power to the energy storage module, while the non-solar module delivers, for example, electrochemically generated electricity to the energy storage module via the first solar module, which acts as a backplane. The system may also include additional solar modules that can be connected to the first solar module in collapsed or expanded states to adjust the amount of electricity generated from solar power.Type: GrantFiled: July 24, 2015Date of Patent: November 20, 2018Assignee: Neah Power Systems, Inc.Inventors: Derek Reiman, Chris D'Couto, Saroj Sahu
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Publication number: 20180080992Abstract: A battery management unit may measure a battery voltage of a battery across a first pair of nodes of the battery management unit to produce a first battery measurement and a current of the battery based on a voltage across a second pair of nodes of the battery management unit. Then, the battery management unit may generate a threshold current for a comparator in the battery management unit based on the current, where the threshold current is a sum of the current and a predetermined reference current associated with a predetermined operating profile of an application. Next, the battery management unit may measure the first voltage when the current equals the threshold current to produce a second battery measurement. Moreover, the battery management unit may calculate a model parameter in a model of the battery based on the first voltage measurement, the second voltage measurement, and the predetermined reference current.Type: ApplicationFiled: February 27, 2017Publication date: March 22, 2018Inventors: Karthik KADIRVEL, Saroj SAHU
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Patent number: 9880144Abstract: Disclosed is an electrochemical probe system and an electrical excitation method, used to identify the composition of metals and alloys.Type: GrantFiled: December 19, 2014Date of Patent: January 30, 2018Assignee: PALO ALTO RESEARCH CENTER INCORPORATEDInventors: Saroj Sahu, Craig Eldershaw, Vedasri Vedharathinam, Divyaraj Desai, Jessica Louis Baker Rivest, Ranjeet Rao
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Patent number: 9797857Abstract: Disclosed is an electrochemical probe system and an electrical excitation method, configured in a handheld sorting system, and used to identify the composition of metals and alloys.Type: GrantFiled: February 19, 2015Date of Patent: October 24, 2017Assignee: PALO ALTO RESEARCH CENTER INCORPORATEDInventors: Craig Eldershaw, Saroj Sahu, Sean Garner, Ranjeet Rao, Ashutosh Kole, Vedasri Vedharathinam, Divyaraj Desai, Jessica Louis Baker Rivest, Richard Steele, Martin J. Sheridan
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Patent number: 9702845Abstract: Disclosed is an electrochemical probe system and an electrical excitation method, configured in a bulk sorting system, and used to identify the composition of metals and alloys.Type: GrantFiled: February 19, 2015Date of Patent: July 11, 2017Assignee: PALO ALTO RESEARCH CENTER INCORPORATEDInventors: Craig Eldershaw, Saroj Sahu, Sean Garner, Ranjeet Rao, Ashutosh Kole, Vedasri Vedharathinam, Divyaraj Desai, Jessica Louis Baker Rivest, Richard Steele, Martin J. Sheridan
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Publication number: 20170033414Abstract: A system includes a first optical sensor sensitive to both a parameter of interest, Parameter1, and at least one confounding parameter, Parameter2 and a second optical sensor sensitive only to the confounding parameter. Measurement circuitry measures M1 in response to light scattered by the first optical sensor, where M1=value of Parameter1+K*value of Parameter2. The measurement circuitry also measures M2 in response to light scattered by the second optical sensor, where M2=value of Parameter2. Compensation circuitry determines a compensation factor, K, for the confounding parameter based on measurements of M1 and M2 taken over multiple load/unload cycles or over one or more thermal cycles. The compensation factor is used to determine the parameter of interest.Type: ApplicationFiled: July 28, 2015Publication date: February 2, 2017Inventors: Anurag Ganguli, Julian Schwartz, Ajay Raghavan, Peter Kiesel, Bhaskar Saha, Saroj Sahu, Lars Wilko Sommer
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Publication number: 20160245775Abstract: Disclosed is an electrochemical probe system and an electrical excitation method, configured in a bulk sorting system, and used to identify the composition of metals and alloys.Type: ApplicationFiled: February 19, 2015Publication date: August 25, 2016Inventors: Craig Eldershaw, Saroj Sahu, Sean Garner, Ranjeet Rao, Ashutosh Kole, Vedasri Vedharathinam, Divyaraj Desai, Jessica Louis Baker Rivest, Richard Steele, Martin J. Sheridan
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Publication number: 20160245773Abstract: Disclosed is an electrochemical probe system and an electrical excitation method, configured in a handheld sorting system, and used to identify the composition of metals and alloys.Type: ApplicationFiled: February 19, 2015Publication date: August 25, 2016Inventors: Craig Eldershaw, Saroj Sahu, Sean Garner, Ranjeet Rao, Ashutosh Kole, Vedasri Vedharathinam, Divyaraj Desai, Jessica Louis Baker Rivest, Richard Steele, Martin J. Sheridan
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Publication number: 20160178563Abstract: Disclosed is an electrochemical probe system and an electrical excitation method, used to identify the composition of metals and alloys.Type: ApplicationFiled: December 19, 2014Publication date: June 23, 2016Inventors: Saroj Sahu, Craig Eldershaw, Vedasri Vedharathinam, Divyaraj Desai, Jessica Louis Baker Rivest, Ranjeet Rao
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Publication number: 20160064763Abstract: An electrolyte membrane for a reformer-less fuel cell is provided. The electrolyte membrane is assembled with fuel and air manifolds to form the fuel cell. The fuel manifold receives an oxidizable fuel from a fuel supply in a gaseous, liquid, or slurry form. The air manifold receives air from an air supply. The electrolyte membrane conducts oxygen in an ionic superoxide form when the fuel cell is exposed to operating temperatures above the boiling point of water to electrochemically combine the oxygen with the fuel to produce electricity. The electrolyte membrane includes a porous electrically non-conductive substrate, an anode catalyst layer deposited along a fuel manifold side of the substrate, a cathode catalyst layer deposited along an air manifold side of the substrate, and an ionic liquid filling the substrate between the anode and cathode catalyst layers. Methods for manufacturing and operating the electrolyte membrane are also provided.Type: ApplicationFiled: August 28, 2014Publication date: March 3, 2016Inventor: Saroj Sahu
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Publication number: 20160028129Abstract: A battery includes a folded bicell battery stack with an embedded fiber optic cable and sensor. A cell casing encloses the bicell stack with at least one fiber optic cable is embedded within the battery. The fiber optic cable includes an internal portion disposed within the cell casing and having at least one optical sensor disposed thereon. An external portion of the fiber optic cable protrudes from the casing. A sealing gasket is disposed at least partially around the fiber optic cable and between the cell sealing edges at a point of entry of the fiber optic cable into the battery.Type: ApplicationFiled: July 23, 2014Publication date: January 28, 2016Inventors: Ajay Raghavan, Peter Kiesel, Lars Wilko Sommer, Bhaskar Saha, Saroj Sahu, Alexander Lochbaum, Tobias Staudt, Chang-Jun Bae, Mohamed Alamgir, Hoe Jin Hah, Bokkyu Choi, Gyu-Ok Hwang, Geun-Chang Chung
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Publication number: 20160028273Abstract: A system for simultaneously charging an energy storage device from multiple energy input devices includes energy input devices in the form of solar and non-solar modules and an energy storage device in the form of a rechargeable battery, which is part of an energy storage module. A first solar module is able to generate solar power and delivers this power to the energy storage module, while the non-solar module delivers, for example, electrochemically generated electricity to the energy storage module via the first solar module, which acts as a backplane. The system may also include additional solar modules that can be connected to the first solar module in collapsed or expanded states to adjust the amount of electricity generated from solar power.Type: ApplicationFiled: July 24, 2015Publication date: January 28, 2016