Patents by Inventor Ramkumar Krishnan
Ramkumar Krishnan 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: 20150228991Abstract: An electrochemical cell system and a process for operating the same, the system having at least two fuel electrodes for receiving electrodeposited metal fuel; at least one oxidant electrode spaced apart from the fuel electrode; at least one charging electrode; an ionically conductive medium communicating the electrodes of the electrochemical cell system for conducting ions to support electrochemical reactions at the fuel, oxidant, and charging electrodes; and, one or more controllers configured to operate the cell system in discharging and charging modes and monitor a state of charge for each fuel electrode. The controllers may assign each fuel electrode in a discharging unit having a state-of-charge meeting a predetermined depletion criteria from the discharging unit to the charging unit, and each fuel electrode in the charging unit having a state-of-charge meeting a predetermined loading criteria from the charging unit to the discharging unit.Type: ApplicationFiled: February 11, 2015Publication date: August 13, 2015Inventors: Cody A. Friesen, Joel Hayes, Sergey Puzhaev, Ramkumar Krishnan, Todd Trimble
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Patent number: 9105910Abstract: An electrochemical cell system is configured to utilize an ionically conductive medium flowing through a plurality of electrochemical cells. One or more disperser chambers are provided to disrupt or minimize electrical current flowing between the electrochemical cells, such as between the cathode of one cell and the anode of a subsequent cell by dispersing the ionically conductive medium. Air is introduced into the disperser chamber to prevent the formation of foamed ionically conductive medium, which may reconnect the dispersed ionically conductive medium, allowing the current to again flow therethrough.Type: GrantFiled: January 31, 2012Date of Patent: August 11, 2015Assignee: FLUIDIC, INC.Inventors: Cody A. Friesen, Ramkumar Krishnan, Michael John Mihalka, Joel R. Hayes, Grant Friesen
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Patent number: 9105946Abstract: An electrochemical cell includes a fuel electrode configured to operate as an anode to oxidize a fuel when connected to a load. The cell also includes an oxidant electrode configured to operate as a cathode to reduce oxygen when connected to the load. The fuel electrode comprises a plurality of scaffolded electrode bodies. The present invention relates to an electrochemical cell system and method of resetting the electrochemical cell by applying a charge (i.e. voltage or current) to the cell to drive oxidation of the fuel, wherein the fuel electrode operates as an anode, and the second cell operates as a cathode, removing uneven distributions of fuel that may cause premature shorting of the electrode bodies to improve capacity, energy stored, and cell efficiency.Type: GrantFiled: October 19, 2011Date of Patent: August 11, 2015Assignee: FLUIDIC, INC.Inventors: Cody A. Friesen, Ramkumar Krishnan, Todd Trimble, Sergey Puzhaev
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Publication number: 20150149410Abstract: Publishing a document from a cloud storage and/or productivity application is described. A cloud storage and/or productivity application can include a command to publish that may be executed from a user interface to the cloud storage and/or productivity application. In response to receiving a request to publish the document through a user interface, a copy of a document to be published can be communicated to a publish service of a content delivery system. The copy of the document can be a productivity application file.Type: ApplicationFiled: November 27, 2013Publication date: May 28, 2015Applicant: Microsoft CorporationInventors: ANDREW C. HAON, SOHAIL TARIQ, ROU-PENG HUANG, LUCIANA SILVA DANTAS, LAUREN ELIZABETH ANN JAVOR, DANIEL J. RONEY, RAMKUMAR KRISHNAN, MARK ALLAN HOPWOOD, ULZIIDELGER LOBO
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Publication number: 20150143177Abstract: An analysis module is configured to receive data associated with an event flow. The data is received from a first analysis module (e.g., in a stack of analysis modules) or from the event flow. The analysis module is configured to execute an analysis operation on the data to generate a result. The analysis module can output the result to a second analysis module (e.g., in the stack of analysis modules) or to a user interface.Type: ApplicationFiled: January 22, 2015Publication date: May 21, 2015Inventors: Olivier Nano, Ivo Jose Garcia dos Santos, Tihomir Tarnavski, Sebastien Peray, Marcel Tilly, Ramkumar Krishnan
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Publication number: 20150142859Abstract: The publishing and distribution of productivity documents to collections are described. Document collections distribution and publishing can be facilitated by a service that receives documents to publish and stores the documents at a storage of the service. The documents can be stored in the file formats they were created in, including productivity application file formats such as word processing file format and presentation file format. The service also stores metadata associated with each document, including a collection identifier that identifies each collection that a document is added to. The documents and the collections to which the documents may be associated with are searchable and discoverable through the service.Type: ApplicationFiled: November 18, 2013Publication date: May 21, 2015Applicant: Microsoft CorporationInventors: ANDREW C. HAON, SOHAIL TARIQ, ROU-PENG HUANG, LUCIANA SILVA DANTAS, LAUREN ELIZABETH ANN JAVOR, DANIEL J. RONEY, RAMKUMAR KRISHNAN, MARK ALLAN HOPWOOD, ULZIIDELGER LOBO
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Publication number: 20150104679Abstract: A process for conditioning an electrochemical cell system comprising at least two electrochemical cells comprises selecting from the fuel electrodes of the electrochemical cells groups comprising: a charged group and a reset group. The process also comprises holding the fuel electrodes within the charged group at a predetermined state of charge associated with a set concentration of metal fuel ions in solution in the ionically conductive medium. The process further comprises resetting the fuel electrodes within the reset group. An electrochemical cell system includes a plurality of fuel electrodes and one or more controllers configured to regulate the concentration of reducible metal fuel ions in solution with an ionically conductive medium by maintaining a predetermined state of charge of at least one of the fuel electrodes, and initiate a charging, discharging, or resetting process on at least one other fuel electrode. Other features and embodiments are also disclosed.Type: ApplicationFiled: October 13, 2014Publication date: April 16, 2015Inventors: Todd TRIMBLE, Sergey PUZHAEZ, Joel HAYES, Ramkumar KRISHNAN, Cody A. FRIESEN
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Patent number: 8949210Abstract: Methods, systems, and computer-readable media to analyze a CEP query are disclosed. A particular analysis module is configured to receive data associated with an event flow generated by execution of a CEP query. The data is received from a first analysis module (e.g., in a stack of analysis modules) or from the event flow via a software communication interface. The analysis module is also configured to execute an analysis operation on the data to generate a result. The analysis module can output the result to a second analysis module (e.g., in the stack of analysis modules) or to a user interface via the software communication interface.Type: GrantFiled: May 13, 2010Date of Patent: February 3, 2015Assignee: Microsoft CorporationInventors: Olivier Nano, Ivo José Garcia dos Santos, Tihomir Tarnavski, Sebastien Peray, Marcel Tilly, Ramkumar Krishnan
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Publication number: 20150030941Abstract: An electrochemical cell includes a permeable fuel electrode configured to support a metal fuel thereon, and an oxidant reduction electrode spaced from the fuel electrode. An ionically conductive medium is provided for conducting ions between the fuel and oxidant reduction electrodes, to support electrochemical reactions at the fuel and oxidant reduction electrodes. A charging electrode is also included, selected from the group consisting of (a) the oxidant reduction electrode, (b) a separate charging electrode spaced from the fuel and oxidant reduction electrodes, and (c) a portion of the permeable fuel electrode. The charging electrode is configured to evolve gaseous oxygen bubbles that generate a flow of the ionically conductive medium. One or more flow diverters are also provided in the electrochemical cell, and configured to direct the flow of the ionically conductive medium at least partially through the permeable fuel electrode.Type: ApplicationFiled: October 2, 2014Publication date: January 29, 2015Inventors: Cody A. FRIESEN, Ramkumar Krishnan, Grant Friesen, Joel Hayes
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Patent number: 8911910Abstract: One aspect of the present invention provides an electrochemical cell system comprising at least one electrochemical cell configured to be connected to a power supply to recharge the cell. The electrochemical cell system comprises a plurality of electrodes and electrode bodies therein. The electrochemical cell system further comprises a switching system configured to permit modifications of the configuration of anodes and cathodes during charging of the electrochemical cell, and a controller configured to control the switching system. The controller is configured to selectively apply the electrical current to a different number of said electrode bodies based on at least one input parameter so as to adjust a rate and density of the growth of the electrodeposited metal fuel.Type: GrantFiled: November 17, 2011Date of Patent: December 16, 2014Assignee: Fluidic, Inc.Inventors: Ramkumar Krishnan, Cody A. Friesen
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Patent number: 8906563Abstract: An electrochemical cell includes a permeable fuel electrode configured to support a metal fuel thereon, and an oxidant reduction electrode spaced from the fuel electrode. An ionically conductive medium is provided for conducting ions between the fuel and oxidant reduction electrodes, to support electrochemical reactions at the fuel and oxidant reduction electrodes. A charging electrode is also included, selected from the group consisting of (a) the oxidant reduction electrode, (b) a separate charging electrode spaced from the fuel and oxidant reduction electrodes, and (c) a portion of the permeable fuel electrode. The charging electrode is configured to evolve gaseous oxygen bubbles that generate a flow of the ionically conductive medium. One or more flow diverters are also provided in the electrochemical cell, and configured to direct the flow of the ionically conductive medium at least partially through the permeable fuel electrode.Type: GrantFiled: June 25, 2012Date of Patent: December 9, 2014Assignee: Fluidic, Inc.Inventors: Cody A Friesen, Ramkumar Krishnan, Grant Friesen, Joel Hayes
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Patent number: 8808929Abstract: An electrochemical cell comprising an electrolyte comprising water and a hydrophobic ionic liquid comprising positive ions and negative ions. The electrochemical cell also includes an air electrode configured to absorb and reduce oxygen. A hydrophilic or hygroscopic additive modulates the hydrophobicity of the ionic liquid to maintain a concentration of the water in the electrolyte is between 0.001 mol % and 25 mol %.Type: GrantFiled: April 13, 2011Date of Patent: August 19, 2014Inventors: Cody A. Friesen, Ramkumar Krishnan, Toni Tang, Derek Wolfe
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Publication number: 20140091631Abstract: A system includes a boost converter configured to amplify input voltage received from one or more power sources into output voltage. The system also includes a current sensor configured to sense a current of the input voltage for example, by induction. The system further includes a controller configured to adjust an amplification of the boost converter in response to the current sensed by the current sensor. When utilized in each of a plurality of power source modules coupled to a common load, the power source modules adjust the amplifications of their boost converters towards equalization of their output voltages and their currents in response to sensed currents of the input voltages changing through demand of the common load. Associated systems and methods are also disclosed.Type: ApplicationFiled: September 27, 2013Publication date: April 3, 2014Applicant: FLUIDIC, INC.Inventors: Mark NADEN, Ramkumar Krishnan
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Publication number: 20140061424Abstract: An isolation system includes a platform, a plurality of isolators for the platform electronically switchable between a soft mode of isolation resulting in a first natural frequency and a stiff mode of isolation resulting in a second natural frequency, and a controller responsive to a signal representing the frequency of a machine on the platform and configured to switch the isolator to the stiff mode of operation when the frequency of the machine approaches or reaches, the first natural frequency to avoid resonance magnification, and otherwise switch the isolation to the soft mode of operation.Type: ApplicationFiled: August 30, 2012Publication date: March 6, 2014Inventors: Darren Chao, Hamid Shaidani, Ramkumar Krishnan
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Publication number: 20140061423Abstract: A fast response, dual stiffness mode isolator including a flexible diaphragm for an isolation piston, a first chamber supporting the flexible diaphragm, a second chamber serving as a reservoir, and a valve connected to a supply, to the first chamber, and to the second chamber and operable to by-pass the second chamber to more quickly direct the supply to the first chamber.Type: ApplicationFiled: August 30, 2012Publication date: March 6, 2014Inventors: Darren Chao, Hamid Shaidani, Ramkumar Krishnan
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Patent number: 8659268Abstract: An electrochemical cell includes a fuel electrode configured to operate as an anode to oxidize a fuel when connected to a load, and configured to operate as a cathode when connected to a power supply. The fuel electrode comprises a plurality of scaffolded electrode bodies, wherein the scaffolded electrode bodies are of varying size. The electrode bodies are of a larger size at positions distal from a charging electrode configured to act as an anode when connected to the power supply, and of a smaller size at positions proximal to the charging electrode. When connected to a load, the scaffolded electrode bodies-containing fuel electrode acts as the electrochemical cell anode and electrodeposited fuel is oxidized.Type: GrantFiled: June 24, 2011Date of Patent: February 25, 2014Assignee: Fluidic, Inc.Inventors: Ramkumar Krishnan, Grant Friesen, Cody A. Friesen
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Patent number: 8658318Abstract: The present invention relates to an electrochemical cell for generating electrical power that includes an anode, a cathode, a charging electrode and an ionically conductive medium containing at least metal fuel ions and an additive for enhancing at least one electrochemical reaction in the cell. The cell also includes an additive sorbent material in contact with the ionically conductive medium that contains an excess amount of the additive, the sorbent material configured to release the excess additive to the ionically conductive medium as concentration of the additive in the ionically conductive medium is reduced during operation of the cell.Type: GrantFiled: August 29, 2011Date of Patent: February 25, 2014Assignee: Fluidic, Inc.Inventors: Cody A. Friesen, Ramkumar Krishnan, Todd Trimble, Sergey Puzhaev
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Patent number: 8632921Abstract: An electrochemical cell includes a first electrode configured to operate as an anode to oxidize a fuel when connected to a load. The first electrode includes a permeable electrode body configured to allow flow of an ionically conductive medium therethrough. An electrode holder includes a cavity for holding the first electrode. A diffuser is positioned in the cavity between the first electrode and the electrode holder with a gap formed between the diffuser and the electrode holder. The diffuser includes openings configured to allow flow of the ionically conductive medium therethrough and to distribute the flow through the first electrode. A second electrode is positioned in the cavity on a side of the first electrode that is opposite the diffuser, and is configured to operate as a cathode when connected to the load and in contact with the ionically conductive medium.Type: GrantFiled: February 2, 2011Date of Patent: January 21, 2014Assignee: Fluidic, Inc.Inventors: Cody A. Friesen, Grant Friesen, Ramkumar Krishnan, Todd Trimble
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Patent number: 8492052Abstract: An electrochemical cell includes a fuel electrode configured to operate as an anode to oxidize a fuel when connected to a load. An electrode holder includes a cavity for holding the fuel electrode, at least one inlet connected to the cavity on one side of the cavity and configured to supply an ionically conductive medium to the cavity, and at least one outlet connected to the cavity on an opposite side of the cavity and configured to allow the ionically conductive medium to flow out of the cavity. A plurality of spacers extend across the fuel electrode and the cavity in a spaced relation from each other to define a plurality of flow lanes in the cavity.Type: GrantFiled: October 8, 2010Date of Patent: July 23, 2013Assignee: Fluidic, Inc.Inventors: Cody A Friesen, Ramkumar Krishnan, Grant Friesen
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Publication number: 20130115532Abstract: An electrochemical cell includes a permeable fuel electrode configured to support a metal fuel thereon, and an oxidant reduction electrode spaced from the fuel electrode. An ionically conductive medium is provided for conducting ions between the fuel and oxidant reduction electrodes, to support electrochemical reactions at the fuel and oxidant reduction electrodes. A charging electrode is also included, selected from the group consisting of (a) the oxidant reduction electrode, (b) a separate charging electrode spaced from the fuel and oxidant reduction electrodes, and (c) a portion of the permeable fuel electrode. The charging electrode is configured to evolve gaseous oxygen bubbles that generate a flow of the ionically conductive medium. One or more flow diverters are also provided in the electrochemical cell, and configured to direct the flow of the ionically conductive medium at least partially through the permeable fuel electrode.Type: ApplicationFiled: June 25, 2012Publication date: May 9, 2013Applicant: Fluidic, Inc.Inventors: Cody A FRIESEN, Ramkumar KRISHNAN, Grant FRIESEN, Joel HAYES