Patents by Inventor Thirumalai Palanisamy
Thirumalai Palanisamy 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: 9064633Abstract: A method for preparing a spiro quaternary ammonium system and electrolytes containing spiro quaternary ammonium cations, comprising a synthesizing step wherein a spiro ammonium system is formed in a medium that can serve as both the reaction solvent and as an electrolyte solvent.Type: GrantFiled: March 18, 2013Date of Patent: June 23, 2015Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Alfred Siggel, Frank Nerenz, Thirumalai Palanisamy, Andrew Poss, Sonja Demel
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Publication number: 20130264510Abstract: A method for preparing a spiro quaternary ammonium system and electrolytes containing spiro quaternary ammonium cations, comprising a synthesizing step wherein a spiro ammonium system is formed in a medium that can serve as both the reaction solvent and as an electrolyte solvent.Type: ApplicationFiled: March 18, 2013Publication date: October 10, 2013Inventors: Alfred Siggel, Frank Nerenz, Thirumalai Palanisamy, Andrew Poss, Sonja Demel
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Patent number: 8426593Abstract: A method for preparing a spiro quaternary ammonium system and electrolytes containing spiro quaternary ammonium cations, comprising a synthesizing step wherein a spiro ammonium system having a structure of: wherein n is independently an integer from about 0 to about 6; R1 is independently CH2, CHF, CF2, CH, CF; R2 is CH2, CF, CR3, CHF, CF2, CHR3, CR3R3, NH, O, S, 3-8 member cyclic or heterocyclic, or a polycyclic or polyheterocyclic wherein each ring has 3 to 8 members; R3 is independently (a) H; (b) a C1-C6 alkyl, C1-C6 alkoxy, or C1-C6 alkenyl group; or (c) heteroalkyl groups with a chain length of about 1 to about 6; R4 is CF, CH2, CR3, CHF, CF2, CHR3, CR3R3, NH, O, S, or a quaternary ammonium spiro junction is formed in a medium that can serve as both the reaction solvent and as an electrolyte solvent.Type: GrantFiled: August 28, 2006Date of Patent: April 23, 2013Assignee: Honeywell International Inc.Inventors: Alfred Siggel, Frank Nerenz, Thirumalai Palanisamy, Andrew Poss, Sonja Demel
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Publication number: 20070049750Abstract: A method for preparing a spiro quaternary ammonium system and electrolytes containing spiro quaternary ammonium cations, comprising a synthesizing step wherein a spiro ammonium system is formed in a medium that can serve as both the reaction solvent and as an electrolyte solvent.Type: ApplicationFiled: August 28, 2006Publication date: March 1, 2007Applicant: Honeywell International Inc.Inventors: Alfred Siggel, Frank Nerenz, Thirumalai Palanisamy, Andrew Poss, Sonja Demel
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Publication number: 20060226845Abstract: In accordance with various embodiments, there is a method for determining the capacity of a battery. Various embodiments include applying a predetermined current ramp to a fully charged lead-acid battery while measuring a battery terminal voltage. An Iup can be determined, where the Iup is a transition from charging to overcharging. A specific gravity of the lead-acid battery can also be determined. The capacity of the lead-acid battery can then be determined from the Iup using a correlation function that describes the relationship of the Iup to the capacity, where the correlation function depends on the specific gravity of the lead-acid battery.Type: ApplicationFiled: March 31, 2005Publication date: October 12, 2006Inventors: Hector Atehortua, Steven Hoenig, Thirumalai Palanisamy, Harmohan Singh
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Publication number: 20060197504Abstract: In accordance with the invention, there is a battery defect detection method comprising applying a current ramp to a battery; determining a first time (t1) when a current of the battery reaches a maximum current (Ipeak), and determining a second time (t2) when a terminal voltage of the battery reaches a maximum voltage (Vpeak). The method also includes determining a differential (d), wherein (d)=/(t1)?(t2)/, and wherein (d) corresponds to a magnitude of defects in the battery.Type: ApplicationFiled: March 1, 2005Publication date: September 7, 2006Inventors: Hector Atehortua, Steven Hoenig, Thirumalai Palanisamy, Harmohan Singh
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Publication number: 20060170426Abstract: In accordance with various embodiments, there is a method for determining the state of charge of a battery. Various embodiments include the steps of determining the specific gravity of the battery and measuring an open circuit voltage of the battery at rest. The open circuit voltage at rest can be used to determine the battery state of charge from a correlation function dependent on the battery specific gravity.Type: ApplicationFiled: January 31, 2005Publication date: August 3, 2006Inventors: Hector Atehortua, Steven Hoeing, Thirumalai Palanisamy, Harmohan Singh
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Publication number: 20060088435Abstract: A turbomachinery component includes a substrate having a surface, the surface being a material consisting essentially of at least one compound having the chemical formula Mn+1AXn, wherein M is at least one early transition metal selected from groups IIIB, IVB, VB, and VIB, A is at least one element selected from groups IIIA, IVA, VA, VIA, and VIIA, X is one or both of carbon and nitrogen, and n is an integer between 1 and 3. The component is made by forming a compact and sintered substrate with the material, or by coating a substrate with the material.Type: ApplicationFiled: May 10, 2005Publication date: April 27, 2006Inventors: Surojit Gupta, Thirumalai Palanisamy, Michel Barsoum, Chien-Wei Li
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Publication number: 20050270033Abstract: In accordance with various embodiments, there is a method for determining the specific gravity of a battery. Various embodiments include the steps of applying an increasing current ramp to a battery and measuring a response voltage of the battery when the increasing current ramp is applied to the battery. When the current ramp reaches a predetermined current a decreasing current is supplied to the battery and the battery's voltage response is measured. The specific gravity of the battery can be determined based on the voltage response of the battery to the applied current ramp.Type: ApplicationFiled: June 4, 2004Publication date: December 8, 2005Inventors: Harmohan Singh, Steven Hoenig, Thirumalai Palanisamy, Hector Atehortua
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Publication number: 20050269993Abstract: In accordance with various embodiments, there is a method for determining the available energy of a battery. Various embodiments include the steps of applying an increasing current to the battery and measuring a response voltage of the battery when the increasing current is applied to the battery.Type: ApplicationFiled: June 4, 2004Publication date: December 8, 2005Inventors: Thirumalai Palanisamy, Harmohan Singh, Hector Atehortua, Steven Hoenig
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Publication number: 20050262965Abstract: A turbomachinery component includes a substrate having a surface, the surface consisting essentially of at least one composite of at least one metal and at least one compound having the chemical formula Mn+1AXn, wherein M is at least one early transition metal selected from groups IIIB, IVB, VB, and VIB, A is at least one element selected from groups IIIA, IVA, VA, VIA, and VIIA, X is one or both of carbon and nitrogen, and n is an integer between 1 and 3. The component is made by compressing a powdered material to form a substrate that consists essentially of the composite and sintering the substrate, or by coating a substrate with the composite.Type: ApplicationFiled: May 10, 2005Publication date: December 1, 2005Inventors: Thirumalai Palanisamy, Surojit Gupta, Michel Barsoum, Chien-Wei Li
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Publication number: 20050069761Abstract: An electrolyte with an indicator, such as a dye, for detecting leakage from an electrochemical energy storage device is provided. Also provided is a method of making such an electrolyte with indicator; a device that incorporates such an electrolyte with indicator; a method of manufacturing an electronic or electrical system that incorporates such a device; and a method of detecting the leakage of electrolyte from a battery or capacitor.Type: ApplicationFiled: September 30, 2004Publication date: March 31, 2005Applicant: Honeywell International Inc.Inventors: Thirumalai Palanisamy, Alfred Siggel, Stephen LaCroix, Michael Fooken, Thomas Potrawa, Jacques Geenen
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Publication number: 20050014070Abstract: A non-aqueous electrolyte for an electrical storage device comprising a non-aqueous solvent, a salt dissolved in said non-aqueous solvent, and a liquid viscosity reducing agent in sufficient quantity to substantially reduce the viscosity of the electrolyte below the viscosity of the non-aqueous solvent.Type: ApplicationFiled: March 15, 2004Publication date: January 20, 2005Inventors: Thirumalai Palanisamy, Stephen LaCroix, Alfred Siggel, Michael Fooken
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Patent number: 6706420Abstract: The present invention relates to electroless plating of a platinum-rhodium alloy onto a substrate. More particularly, this invention pertains to an aqueous platinum and rhodium plating bath, a process for plating a uniform coating of a platinum-rhodium alloy onto various substrates using an electroless plating composition, and a platinum-rhodium plated article formed therefrom. This process is suitable for the deposition of a platinum-rhodium alloy on virtually any material of any geometrical shape, including fibers and powders.Type: GrantFiled: July 6, 2000Date of Patent: March 16, 2004Assignee: Honeywell International Inc.Inventors: Alexander S. Kozlov, Thirumalai Palanisamy, Dave Narasimhan
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Patent number: 6641322Abstract: A coupling with a tribological system that can withstand temperatures up to 600° C. The coupling includes a shaft having an outer surface with a layer of chromium and a sleeve for receiving the shaft. The sleeve has an inner surface with a layer of silver or gold. The silver or gold layer contacts the chromium layer to form the tribological system.Type: GrantFiled: December 20, 2002Date of Patent: November 4, 2003Assignee: Honeywell International, Inc.Inventors: Dave Narasimhan, Thirumalai Palanisamy, Rodney Iverson
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Publication number: 20030099509Abstract: A coupling with a tribological system that can withstand temperatures up to 600° C. The coupling includes a shaft having an outer surface with a layer of chromium and a sleeve for receiving the shaft. The sleeve has an inner surface with a layer of silver or gold. The silver or gold layer contacts the chromium layer to form the tribological system.Type: ApplicationFiled: December 20, 2002Publication date: May 29, 2003Inventors: Dave Narasimhan, Thirumalai Palanisamy, Rodney Iverson
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Patent number: 6520703Abstract: A coupling with a tribological system that can withstand temperatures up to 600° C. The coupling includes a shaft having an outer surface with a layer of chromium and a sleeve for receiving the shaft. The sleeve has an inner surface with a layer of silver or gold. The silver or gold layer contacts the chromium layer to form the tribological system.Type: GrantFiled: September 13, 2000Date of Patent: February 18, 2003Assignee: Honeywell International, Inc.Inventors: Dave Narasimhan, Thirumalai Palanisamy, Rodney Iverson
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Patent number: 6455175Abstract: An composition for electroless plating of rhodium onto a substrate, a process for plating a uniform coating of rhodium onto various substrates using an electroless plating composition, and a rhodium plated article formed therefrom. The plating composition is an aqueous solution of triamminetris(nitrito-N,N,N)rhodium(III); ammonium hydroxide; and hydrazine hydrate.Type: GrantFiled: July 6, 2000Date of Patent: September 24, 2002Assignee: Honeywell International Inc.Inventors: Alexander S. Kozlov, Thirumalai Palanisamy, Dave Narasimhan
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Patent number: 6391477Abstract: This invention relates to electroless autocatalytic plating of platinum onto a substrate, an aqueous platinum plating bath, a process for plating a uniform coating of platinum onto various substrates using an electroless autocatalytic plating composition, and a platinum plated article formed therefrom. The plating bath of this invention allows direct autocatalytic plating of platinum on catalytically active and inactive, conductive and non-conductive substrates, avoiding the extra costs of activating a catalytically inactive substrate.Type: GrantFiled: July 6, 2000Date of Patent: May 21, 2002Assignee: Honeywell International Inc.Inventors: Alexander S. Koslov, Thirumalai Palanisamy, Dave Narasimhan
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Patent number: 6387542Abstract: This invention relates to electroless plating of silver onto a substrate, an aqueous silver plating bath, a process for plating a uniform coating of silver onto various substrates using an electroless plating composition, and a silver plated article formed therefrom. The plating bath neither contains nor generates toxic or flammable substances or substances that may contaminate the silver coating. By avoiding strong complexing agents, virtually pure silver may be precipitated from the bath by simple boiling. Silver electroless autocatalytic plating bath consists of silver nitrate, ammonium hydroxide and hydrazine hydrate.Type: GrantFiled: July 6, 2000Date of Patent: May 14, 2002Assignee: Honeywell International Inc.Inventors: Alexander S. Kozlov, Thirumalai Palanisamy, Dave Narasimhan