Patents by Inventor Prathib Skandakumaran
Prathib Skandakumaran 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: 7592695Abstract: A compound heat sink for the removal of thermal energy useful for, inter alia, electronic devices or other components. The compound heat sink includes a die cast base element; an extruded dissipation element having a thermal conductivity of at least about 150 W/m-K; and a thermal connection material positioned between and in thermal contact with each of the base element and the dissipation element, wherein the thermal connection material having an in-plane thermal conductivity greater than the thermal conductivity of the dissipation element.Type: GrantFiled: December 11, 2006Date of Patent: September 22, 2009Assignee: GrafTech International Holdings Inc.Inventors: Bradley E. Reis, Julian Norley, Prathib Skandakumaran
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Patent number: 7573717Abstract: A graphite heat spreader is provided for use with a flash LED light source for a camera of a handheld device such as a cell phone. Dramatically reduced operating temperatures are provided at substantially increased power levels thus providing both improved lighting and improved operating life of the electronic components.Type: GrantFiled: March 10, 2008Date of Patent: August 11, 2009Assignee: GrafTech International Holdings Inc.Inventors: Bradley E. Reis, Martin David Smalc, Brian J. Laser, Gary Stephen Kostyak, Prathib Skandakumaran, Matthew G. Getz, Michael Frastaci
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Publication number: 20090101306Abstract: A heat exchanger system, especially for a room, including a thermal element comprising a surface; a heat spreader comprising at least one sheet of compressed particles of exfoliated graphite having a density of at least about 0.6 g/cc and a thickness of less than about 10 mm, and further comprising a first side and a second side, wherein the heat spreader is positioned relative to the thermal element such that the heat spreader is at least partially wrapped around the thermal element so that the first side of the heat spreader is in a thermal transfer relationship with a portion of the thermal element surface.Type: ApplicationFiled: October 22, 2007Publication date: April 23, 2009Inventors: Bradley E. Reis, John Schober, Prathib Skandakumaran, Gregory Kramer, Robert Anderson Reynolds, III
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Publication number: 20080218977Abstract: A graphite heat spreader is provided for use with a flash LED light source for a camera of a handheld device such as a cell phone. Dramatically reduced operating temperatures are provided at substantially increased life of the electronic components.Type: ApplicationFiled: March 10, 2008Publication date: September 11, 2008Inventors: Bradley E. Reis, Martin David Smalc, Brian J. Laser, Gary Stephen Kostyak, Prathib Skandakumaran, Matthew G. Getz, Michael Frastaci
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Patent number: 7420810Abstract: A thermal management device for the removal of thermal energy useful for, inter alia, electronic devices or other components.Type: GrantFiled: September 12, 2006Date of Patent: September 2, 2008Assignee: GrafTech International Holdings, Inc.Inventors: Bradley E. Reis, Prathib Skandakumaran, Martin David Smalc, Gary D. Shives, Gary Stephen Kostyak, Julian Norley
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Publication number: 20080137304Abstract: A compound heat sink for the removal of thermal energy useful for, inter alia, electronic devices or other components. The compound heat sink includes a die cast base element; an extruded dissipation element having a thermal conductivity of at least about 150 W/m-K; and a thermal connection material positioned between and in thermal contact with each of the base element and the dissipation element, wherein the thermal connection material having an in-plane thermal conductivity greater than the thermal conductivity of the dissipation element.Type: ApplicationFiled: December 11, 2006Publication date: June 12, 2008Inventors: Bradley E. Reis, Julian Norley, Prathib Skandakumaran
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Patent number: 7365988Abstract: A graphite heat spreader is provided for use with a flash LED light source for a camera of a handheld device such as a cell phone. Dramatically reduced operating temperatures are provided at substantially increased power levels thus providing both improved lighting and improved operating life of the electronic components.Type: GrantFiled: August 22, 2006Date of Patent: April 29, 2008Assignee: GrafTech International Holdings Inc.Inventors: Bradley E. Reis, Martin David Smalc, Brian J. Laser, Gary Stephen Kostyak, Prathib Skandakumaran, Matthew G. Getz, Michael Frastaci
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Patent number: 7360309Abstract: A heat exchanger device includes an extruded body that includes one or more layers of channels for coolant flow therethrough, the channels generally having inner diameters of between about 50 microns to about 2000 microns. The device is formed of a material having a high thermal conductivity to facilitate transfer of heat from the heating components present in the subject cooling application to the coolant passing through the heat exchanger and to be compatible with materials of the heating components. The device material is selected from the group consisting of ceramic oxides, ceramic carbides, ceramic nitrides, ceramic borides, ceramic silicides, metals, and intermetallics, and combinations thereof. The heat exchanger device is formed from an extruded filament that is arranged to give the desired channel configuration. The filament includes a central, removable material and an outer material that forms the channel walls upon removal of the central material.Type: GrantFiled: January 28, 2004Date of Patent: April 22, 2008Assignee: Advanced Ceramics Research, Inc.Inventors: K. Ranji Vaidyanathan, Alfonso Ortega, Marlene Platero, Prathib Skandakumaran, Chad Bower
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Publication number: 20080062651Abstract: A thermal management device for the removal of thermal energy useful for, inter alia, electronic devices or other components.Type: ApplicationFiled: September 12, 2006Publication date: March 13, 2008Inventors: Bradley E. Reis, Prathib Skandakumaran, Martin David Smalc, Gary D. Shives, Gary Stephen Kostyak, Julian Norley
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Patent number: 7303005Abstract: Constructions for and methods of manufacturing graphite heat spreaders having thermal vias placed therethrough are provided. Thermal vias having one or two flanges are disclosed, as are flush thermal vias. Graphite heat spreaders having surface layers covering the graphite material are provided. Graphite heat spreaders having a layer of cladding for increased structural integrity are provided. Also disclosed are methods of co-forging a graphite heat spreader element with a metal thermal via in place therein.Type: GrantFiled: January 25, 2006Date of Patent: December 4, 2007Assignee: GrafTech International Holdings Inc.Inventors: Bradley E. Reis, Martin David Smalc, Brian J. Laser, Gary Stephen Kostyak, Prathib Skandakumaran, Matthew G. Getz, Michael Frastaci
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Publication number: 20070158050Abstract: A microchannel heat sink is manufactured from graphite materials. A heat sink member has at least a first thermal contact surface for making thermal contact with an electronic device. The heat sink member is constructed of at least a first sheet of compressed particles of exfoliated graphite, the first sheet having two major surfaces. At least one of the major surfaces has a first plurality of microchannels formed therein for carrying coolant fluid. Said microchannels each have a length parallel to one of said major surfaces and have a cross section normal to said length. The cross-section has at least one dimension below about 1000 microns.Type: ApplicationFiled: January 6, 2006Publication date: July 12, 2007Inventors: Julian Norley, Prathib Skandakumaran, Matthew Getz
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Publication number: 20070102142Abstract: Constructions for and methods of manufacturing graphite heat spreaders having thermal vias placed therethrough are provided. Thermal vias having one or two flanges are disclosed, as are flush thermal vias. Graphite heat spreaders having surface layers covering the graphite material are provided. Graphite heat spreaders having a layer of cladding for increased structural integrity are provided. Also disclosed are methods of co-forging a graphite heat spreader element with a metal thermal via in place therein.Type: ApplicationFiled: January 25, 2006Publication date: May 10, 2007Inventors: Bradley Reis, Martin Smalc, Brian Laser, Gary Kostyak, Prathib Skandakumaran, Matthew Getz, Michael Frastaci
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Publication number: 20070103875Abstract: A graphite heat spreader is provided for use with a flash LED light source for a camera of a handheld device such as a cell phone. Dramatically reduced operating temperatures are provided at substantially increased power levels thus providing both improved lighting and improved operating life of the electronic components.Type: ApplicationFiled: August 22, 2006Publication date: May 10, 2007Inventors: Bradley Reis, Martin Smale, Brian Laser, Gary Kostyak, Prathib Skandakumaran, Matthew Getz, Michael Frastaci
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Publication number: 20050039885Abstract: A heat exchanger device includes an extruded body that includes one or more layers of channels for coolant flow therethrough, the channels generally having inner diameters of between about 50 microns to about 2000 microns. The device is formed of a material having a high thermal conductivity to facilitate transfer of heat from the heating components present in the subject cooling application to the coolant passing through the heat exchanger and to be compatible with materials of the heating components. The device material is selected from the group consisting of ceramic oxides, ceramic carbides, ceramic nitrides, ceramic borides, ceramic suicides, metals, and intermetallics, and combinations thereof. The heat exchanger device is formed from an extruded filament that is arranged to give the desired channel configuration. The filament includes a central, removable material and an outer material that forms the channel walls upon removal of the central material.Type: ApplicationFiled: January 28, 2004Publication date: February 24, 2005Applicant: Advanced Ceramics Research, Inc.Inventors: K. Vaidyanathan, Alfonso Ortega, Marlene Platero, Prathib Skandakumaran, Chad Bower