Patents by Inventor Narsimhan Raghunathan

Narsimhan Raghunathan 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).

  • Patent number: 10351484
    Abstract: Broadly, the instant disclosure is directed towards: fertilizer compositions and methods of making the same, in which, due to the composition, the fertilizer exhibits blast suppression (e.g. measured via specific impulse) and/or desensitization (e.g. measured via unconfined critical diameter and/or booster quantity needed to initiate detonation) as compared to existing ammonium nitrate fertilizer(s).
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: July 16, 2019
    Assignee: Alcoa USA Corp.
    Inventors: Mark L. Weaver, Vincent Paola, John Cravener, Narsimhan Raghunathan, Judodine Nichols
  • Publication number: 20170051384
    Abstract: An apparatus, method and composition for long length tubing includes continuous production of long length seamless aluminum tubing suitable for use as coiled tubing in hydrocarbon wells. A 2XXX aluminum alloy may be used in combination with a continuous casting/extrusion apparatus using aluminum from a melt. Other metals may be used, as well as continuously cast rod from a casting wheel and belt or conform extruder, which is processed to form a hollow and then sized by drawing.
    Type: Application
    Filed: August 11, 2016
    Publication date: February 23, 2017
    Inventors: Eric Stull, James Burg, Todd Cogswell, Heather Drieling, Glenn Jarvis, Vivek Sample, Jeff Lehner, Narsimhan Raghunathan
  • Publication number: 20160332928
    Abstract: Broadly, the instant disclosure is directed towards: fertilizer compositions and methods of making the same, in which, due to the composition, the fertilizer exhibits blast suppression (e.g. measured via specific impulse) and/or desensitization (e.g. measured via unconfined critical diameter and/or booster quantity needed to initiate detonation) as compared to existing ammonium nitrate fertilizer(s).
    Type: Application
    Filed: May 13, 2016
    Publication date: November 17, 2016
    Inventors: Mark L. Weaver, Vincent Paola, John Cravener, Narsimhan Raghunathan, Judodine Nichols
  • Publication number: 20130301273
    Abstract: A device for thermal management of an electronic component includes an inner shell dimensioned to house an electrical circuit and a thermally conductive metal outer shell. The metal outer shell has a thickness less than 6.3246 mm; a first closed end having a first diameter and dimensioned to support an electronic component operably connected to the electrical circuit; and a second end having a second diameter, wherein the first diameter is greater than the second diameter. The inner shell is at least partially within the outer shell. The outer shell is comprised of a single metal sheet. The thinnest portion of the outer metal shell is less than or equal to 0.75 times the thickest portion of the outer metal shell.
    Type: Application
    Filed: March 15, 2013
    Publication date: November 14, 2013
    Applicant: ALCOA INC.
    Inventors: Edmund Chu, Kelly Whitaker-Weiler, J.R. Bushik, Jeffrey Shoup, Narsimhan Raghunathan, Luis Fanor Vega, Jason Bely, Gary L. Myers, Gary L. Hunker, Barry E. Soxman, Anthony J. Fedusa, Robert E. Dick, Darl G. Boysel, Eileen M. Kenzevich
  • Publication number: 20050008890
    Abstract: A method of operating a twin wheel conform metal extrusion device or a cladding extrusion device for producing a composite of an extruded metal shell bonded to a metal foam core. A metal feedstock is extruded through an extrusion die defining a cavity housing a hollow extrusion mandrel to produce a metal shell. Liquid foam of a second metal is simultaneously delivered through the hollow mandrel bore such that the foam exiting the axial bore is metallurgically bonded to the metal extruded through the cavity.
    Type: Application
    Filed: August 4, 2004
    Publication date: January 13, 2005
    Inventors: Narsimhan Raghunathan, J. Bryant, Andrew Hinkle
  • Patent number: 6808003
    Abstract: A method of operating a twin wheel conform metal extrusion device or a cladding extrusion device for producing a composite of an extruded metal shell bonded to a metal foam core. A metal feedstock is extruded through an extrusion die defining a cavity housing a hollow extrusion mandrel to produce a metal shell. Liquid foam of a second metal is simultaneously delivered through the hollow mandrel bore such that the foam exiting the axial bore is metallurgically bonded to the metal extruded through the cavity.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: October 26, 2004
    Assignee: Alcoa Inc.
    Inventors: Narsimhan Raghunathan, J. Daniel Bryant, Andrew J. Hinkle
  • Publication number: 20030030181
    Abstract: A method of operating a twin wheel conform metal extrusion device or a cladding extrusion device for producing a composite of an extruded metal shell bonded to a metal foam core. A metal feedstock is extruded through an extrusion die defining a cavity housing a hollow extrusion mandrel to produce a metal shell. Liquid foam of a second metal is simultaneously delivered through the hollow mandrel bore such that the foam exiting the axial bore is metallurgically bonded to the metal extruded through the cavity.
    Type: Application
    Filed: August 6, 2002
    Publication date: February 13, 2003
    Inventors: Narsimhan Raghunathan, J. Daniel Bryant, Andrew J. Hinkle
  • Publication number: 20030031887
    Abstract: An artificial paper having a porous aluminum foil as the substrate and a writable coating thereon, which includes aluminum trihydrate and other optional whitening agents to facilitate the writability of the substrate. The artificial paper has properties, such as writability, optical properties, mechanical properties, and durability equivalent to or superior to pulp-based paper.
    Type: Application
    Filed: July 10, 2002
    Publication date: February 13, 2003
    Applicant: Alcoa Inc.
    Inventors: Narsimhan Raghunathan, Jean Ann Skiles, Richard Davis