Patents by Inventor Saroj Kumar Sahu
Saroj Kumar 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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Publication number: 20140139190Abstract: A controller for controlling a flow cell battery system is provided. The controller operates the flow cell battery system in a plurality of states including a plating state, a charging state and a discharge state.Type: ApplicationFiled: November 18, 2013Publication date: May 22, 2014Applicant: Deeya Energy, Inc.Inventors: Gopalakrishnan R. PARAKULAM, Saroj Kumar Sahu, Ali Firouzi, Rick Winter, Jagat Banerjee, Binod Kumar Agrawal, PandariNath Siddineni
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Patent number: 8723489Abstract: In accordance with some embodiments, a buck-boost circuit is contemplated which is bi-directional. That is, the buck-boost circuit be configured to produce a load voltage for a load responsive to a source voltage from a voltage source, and the buck-boost circuit may also be configured to produce a charging voltage for the voltage source responsive to a second voltage source connected to the load. In an embodiment, the buck-boost circuit may be operating in boost mode when providing the load voltage and may be operating in buck mode when providing the charging voltage.Type: GrantFiled: May 28, 2010Date of Patent: May 13, 2014Assignee: Deeya Energy, Inc.Inventors: Gopalakrishnan R. Parakulam, Binod Kumar Agrawal, Saroj Kumar Sahu
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Publication number: 20140103877Abstract: A battery management system that monitors and controls the charging and discharging a battery pack in the most versatile way at the block level with virtually no parasitic or dissipative loss is disclosed. The system has capability of using blocks of cells using different chemistry in the same battery pack. Such versatility makes it very useful for usage with erratic grid conditions, solar, wind and other natural energy sources for charging the battery.Type: ApplicationFiled: October 16, 2012Publication date: April 17, 2014Inventors: SAROJ KUMAR SAHU, MADHUSHREE PATNAIK
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Publication number: 20140023943Abstract: A quencher for a flow cell battery is described. The quencher utilizes a quench solution formed from FeCl2 in a dilute HCl solution in order to quench chlorine emissions from the flow cell battery. A quench sensor is further described. The quench sensor monitors the concentration level of FeCl2 in the quench solution and may also monitor the level of the quench solution in the quencher.Type: ApplicationFiled: September 20, 2013Publication date: January 23, 2014Applicant: Deeya Energy, Inc.Inventors: Majid Keshavarz, Saroj Kumar Sahu, Ge Zu
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Patent number: 8587255Abstract: A controller for controlling a flow cell battery system is provided. The controller operates the flow cell battery system in a plurality of states including a plating state, a charging state and a discharge state.Type: GrantFiled: May 28, 2010Date of Patent: November 19, 2013Assignee: Deeya Energy, Inc.Inventors: Gopalakrishnan R. Parakulam, Saroj Kumar Sahu, Ali Firouzi, Rick Winter, Jagat Banerjee, Binod Kumar Agarwal, PandariNath Siddineni
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Publication number: 20130298905Abstract: Devices and methods for vaporizing active ingredients of a selected substance for inhalation using a portable vaporization device are provided herein. In certain aspects, the device includes a portable power source, a heating portion, an inhalation sensor, a temperature sensor, a distal light source, and a grinding portion. In response to an inhalation by a user, the power source energizes a heating element of the heating portion so as to heat air flow to a desired vaporization temperature within a few seconds of detecting inhalation, using convection and radiative heating. The device may include a receptacle for receiving a cartridge containing a pre-prepared substance, such as a liquid, gel, powder, or solid brick, and a grinding portion to allow a user to grind intact portions of cellulose-based material into smaller pieces to facilitate vaporization by manually rotating portions of the device relative to each other.Type: ApplicationFiled: March 12, 2013Publication date: November 14, 2013Inventors: Jason R. Levin, Adam J. Tavin, Artem Mishin, Howard Allen Wilson, Saroj Kumar Sahu, James Juma
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Patent number: 8551299Abstract: A method of producing HCl from H2 and Cl2 is provided. In some embodiments, the method comprises at least one photochemical chamber placed in fluid communication with at least one source of H2 and at least one source of Cl2. In some embodiments, the photochemical chamber effects the formation of HCl through the use of at least one source of ultraviolet radiation contained therein. In some embodiments, the HCl product may be captured and used as a gas. In some embodiments, the HCl product may be absorbed into water to form an aqueous HCl solution.Type: GrantFiled: May 28, 2010Date of Patent: October 8, 2013Assignee: Deeya Energy, Inc.Inventors: Majid Keshavarz, Saroj Kumar Sahu, Chockkalingam Karuppaiah, Ge Zu, Suresh Kumar Surapalan Nair, Vasanthan Mani
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Patent number: 8541121Abstract: A quencher for a flow cell battery is described. The quencher utilizes a quench solution formed from FeCl2 in a dilute HCl solution in order to quench chlorine emissions from the flow cell battery. A quench sensor is further described. The quench sensor monitors the concentration level of FeCl2 in the quench solution and may also monitor the level of the quench solution in the quencher.Type: GrantFiled: January 13, 2011Date of Patent: September 24, 2013Assignee: Deeya Energy, Inc.Inventors: Majid Keshavarz, Saroj Kumar Sahu, Ge Zu
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Patent number: 8535821Abstract: A leak detection sensor for detecting a leakage of an electrolyte solution in a flow battery system is provided. The sensor includes a sensor housing, the sensor housing being at least partially surrounded by a fluid and having mounted therein at least one light source.Type: GrantFiled: January 7, 2013Date of Patent: September 17, 2013Assignee: Deeya Energy, Inc.Inventors: Gopalakrishnan R. Parakulam, Saroj Kumar Sahu, Rick Winter
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Patent number: 8349477Abstract: A leak detection sensor for detecting a leakage of an electrolyte solution in a flow battery system is provided. The sensor includes a sensor housing, the sensor housing being at least partially surrounded by a fluid and having mounted therein at least one light source.Type: GrantFiled: May 28, 2010Date of Patent: January 8, 2013Assignee: Deeya Energy, Inc.Inventors: Gopalakrishnan R. Parakulam, Saroj Kumar Sahu, Rick Winter
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Patent number: 8264202Abstract: A method and apparatus for determining the state of charge (SOC) of a battery is discussed. The method involves measuring the terminal voltage across the battery and the current flowing through the battery at a plurality of different times and fitting a line equation with a slope and an intercept to the terminal voltage and current data. The open-circuit voltage (OCV) is calculated from the intercept of the linear equation and the SOC is determined from the OCV by reference to a lookup table.Type: GrantFiled: October 9, 2009Date of Patent: September 11, 2012Assignee: Deeya Energy, Inc.Inventors: Saroj Kumar Sahu, Ali Firouzi
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Publication number: 20120208061Abstract: A stacked cell for a flow cell battery is presented. The stacked cell is sealed by a gasket between individual components. The gasket is formed such that it seals against leakage of electrolytes and facilitates the flow of electrolytes through the stacked cell. Further, the gasket is formed to minimize the linear expansion of the gasket material with temperature.Type: ApplicationFiled: January 13, 2012Publication date: August 16, 2012Applicant: DEEYA ENERGY, INC.Inventors: Saroj Kumar Sahu, Suresh Kumar Surapalan Nair
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Patent number: 8236463Abstract: An electrode for use in a flow cell is presented. The electrode includes a metal plate for collecting current in the electrode that is bonded between a first and second plate.Type: GrantFiled: October 8, 2009Date of Patent: August 7, 2012Assignee: Deeya Energy, Inc.Inventors: Saroj Kumar Sahu, Suresh Kumar Surapalan Nair, Ali Firouzi
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Patent number: 8230736Abstract: A sensor for measuring a level of a conductive liquid, is provided. The sensor includes at least two electrodes that can be positioned in a holding tank so as to be partially submerged in the conductive liquid, sensor leads coupled to the at least two electrodes, and circuitry and a controller for determining the properties of the electrolyte, the circuitry being coupled to the at least two electrodes via the sensor leads, and the controller being coupled to the circuitry. The sensor may be used as an electrolyte level sensor in a flow battery system.Type: GrantFiled: October 9, 2009Date of Patent: July 31, 2012Assignee: Deeya Energy, Inc.Inventors: Saroj Kumar Sahu, Bruce Conway
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Patent number: 8231993Abstract: A multi-walled tubing assembly includes an outer corrugated tube and an inner tube received in the outer tube, and may receive an insert. The inner tube is made from a resilient material. The outer tube is structurally rigid. The insert may be plain and used in conjunction with one or more adhesives. The insert may include a section with barbs or teeth which, once inserted into the inner tube, engage with the corrugations of the outer tube. Some embodiments result in a good seal and mechanically fix the tubing assembly.Type: GrantFiled: October 9, 2009Date of Patent: July 31, 2012Assignee: Deeya Energy, Inc.Inventors: Saroj Kumar Sahu, Suresh Kumar Natarajan, Bruce Conway
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Publication number: 20120183816Abstract: A quencher for a flow cell battery is described. The quencher utilizes a quench solution formed from FeCl2 in a dilute HCl solution in order to quench chlorine emissions from the flow cell battery. A quench sensor is further described. The quench sensor monitors the concentration level of FeCl2 in the quench solution and may also monitor the level of the quench solution in the quencher.Type: ApplicationFiled: January 13, 2011Publication date: July 19, 2012Applicant: Deeya Energy, IncorporatedInventors: MAJID KESHAVARZ, Saroj Kumar Sahu, Ge Zu
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Patent number: 7927731Abstract: A redox flow cell is presented that utilizes a porous membrane separating a first half cell and a second half cell. The porous membrane is chosen to have a figure of merit (FOM) is at least a minimum FOM. A method of providing a porous membrane for a flow cell can include determining a figure of merit; determining a first parameter from a pore size or a thickness for the porous membrane; determining a second parameter from the pore size or the thickness that is not the first parameter for the porous membrane, based on the figure of merit; and constructing a porous membrane having the pore size and the thickness.Type: GrantFiled: July 1, 2008Date of Patent: April 19, 2011Assignee: Deeya Energy, Inc.Inventor: Saroj Kumar Sahu
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Publication number: 20110086247Abstract: A redox cell rebalance system is provided. In some embodiments, the rebalance system includes electrochemical cell and a photochemical cell. In some embodiments, the photochemical cell contains a source of ultraviolet radiation for producing HCl from H2 and Cl2 generated by the system. The HCl product may be collected or circulated back through the system for the rebalancing of electrolytes. A rebalance cell for use in a rebalance system is also provided. In some embodiments, the rebalance cell is the combination of an electrochemical cell and a photochemical cell. In some embodiments, a source of ultraviolet radiation is housed in the cathode compartment of the rebalance cell. In some embodiments, the source of ultraviolet radiation is used to effect the formation of HCl from H2 and Cl2 present in the rebalance cell. The HCl is dissolved in aqueous electrolytes contained in the rebalance cell, which can subsequently be circulated through a rebalance system for the rebalancing of redox cells.Type: ApplicationFiled: May 28, 2010Publication date: April 14, 2011Inventors: Majid Keshavarz, Chockkalingam Karuppaiah, Ge Zu, Saroj Kumar Sahu, Suresh Kumar Surapalan Nair, Vasanthan Mani, Gopalakrishnan R. Parakulam, Ali Firouzi, Veluchamy Rasu
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Publication number: 20110080143Abstract: In accordance with some embodiments, a buck-boost circuit is contemplated which is bi-directional. That is, the buck-boost circuit be configured to produce a load voltage for a load responsive to a source voltage from a voltage source, and the buck-boost circuit may also be configured to produce a charging voltage for the voltage source responsive to a second voltage source connected to the load. In an embodiment, the buck-boost circuit may be operating in boost mode when providing the load voltage and may be operating in buck mode when providing the charging voltage.Type: ApplicationFiled: May 28, 2010Publication date: April 7, 2011Inventors: Gopalakrishnan R. Parakulam, Binod Kumar Agrawal, Saroj Kumar Sahu
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Publication number: 20110081561Abstract: A method of producing HCl from H2 and Cl2 is provided. In some embodiments, the method comprises at least one photochemical chamber placed in fluid communication with at least one source of H2 and at least one source of Cl2. In some embodiments, the photochemical chamber effects the formation of HCl through the use of at least one source of ultraviolet radiation contained therein. In some embodiments, the HCl product may be captured and used as a gas. In some embodiments, the HCl product may be absorbed into water to form an aqueous HCl solution.Type: ApplicationFiled: May 28, 2010Publication date: April 7, 2011Inventors: Majid Keshavarz, Saroj Kumar Sahu, Chockkalingam Karuppaiah, Ge Zu, Suresh Kumar Surapalan Nair, Vasanthan Mani