Patents by Inventor Govindarajan Natarajan
Govindarajan Natarajan 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: 7802442Abstract: A distribution apparatus, system and method for thermal control whereby a plate of a manifold assembly has predetermined surface features positioned on specific locations on a surface thereof for enhancing the cooling capabilities of the assembly. The predetermined surface features of the plate delay a velocity decay of a fluid impinging the surface of the plate, while also increase the surface area of the plate exposed to the impinging liquid, which in turn, maximize both the reliability and thermal performance of the overall thermal system at a given maximum operating pressure.Type: GrantFiled: July 30, 2008Date of Patent: September 28, 2010Assignee: International Business Machines CorporationInventors: Raschid J. Bezama, Govindarajan Natarajan
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Publication number: 20100200197Abstract: A heat sink and method for using the same for use in cooling an integrated circuit (IC) chip is provided herein. The heat sink includes a manifold block, a liquid-filled cooling system, and a compliant foil affixed to the manifold block and backed by a liquid in the closed loop cooling system. The pressure provided by the liquid behind the foil causes the foil to bow, and to conform to non-planarities in the surface of the IC chip, thus reducing air gaps and increasing thermal coupling between the IC chip and the heat sink.Type: ApplicationFiled: February 2, 2010Publication date: August 12, 2010Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Raschid J. Bezama, David C. Long, Govindarajan Natarajan, Thomas Weiss
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Patent number: 7740806Abstract: Methods of making and the resultant micro-spotting plates having a plurality of feed holes, a plurality of dispensing nozzles, an open cavity in communication with the dispensing nozzles and a plurality of channels. The channels connect the feed holes to the dispensing nozzles for transferring a fluid from the feed holes to the dispensing nozzles under a capillary force. A channel may connect a single feed hole retaining a liquid to a dispensing nozzle for dispensing such liquid, or a channel may connect two or more feed holes to a dispensing nozzle for enabling mixing of fluids from the feed holes within the channel prior to dispensing such mixture. The micro-spotting plates allow the continuous self-feeding flow of fluids by capillary forces through its hydrophilic layers for enabling the controlled dispensing of a multi-array of drops of fluids onto a substrate, preferably a test slide, for later use.Type: GrantFiled: February 28, 2006Date of Patent: June 22, 2010Assignee: International Business Machines CorporationInventor: Govindarajan Natarajan
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Patent number: 7708856Abstract: A method to control the post sinter distortion of hot pressing sintered multilayer ceramic laminate by placing a non-densifying structure in the green ceramic laminate prior to sintering. One or more non-densifying structures are placed on one or more ceramic greensheets which are then stacked and laminated to form a green ceramic laminate. The laminate is then sintered and the non-densifying structure will control the dimensions of the hot pressed multilayer ceramic substrate. The method can be used to control post sinter dimensions in MLC substrates manufactured as either single or multi-up substrates by placing the non-densifying structure in the kerf area between the individual product ups prior to sintering.Type: GrantFiled: December 5, 2003Date of Patent: May 4, 2010Assignee: International Business Machines CorporationInventors: Govindarajan Natarajan, Raschid J. Bezama
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Patent number: 7684194Abstract: Systems and methods for cooling electronic devices via enhanced thermal conduction in the gap separating an electronic device from a heat sink are provided. In one embodiment, a system for cooling an electronic device comprises: a heat sink spaced from the integrated circuit by a gap; and a bubbler and an atomizer configured to feed a mixture comprising an atomized liquid and a carrier gas to the gap.Type: GrantFiled: June 4, 2008Date of Patent: March 23, 2010Assignee: International Business Machines CorporationInventors: Govindarajan Natarajan, Raschid J. Bezama, David L. Gardell, James N. Humenik
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Patent number: 7645423Abstract: A method of making and the resultant micro well plate that includes a plurality of greensheets, either laminated or sintered together, whereby these greensheets have a plurality of vertical micro well reaction chamber openings therein, and optionally a plurality horizontal channels connecting selected well reaction chamber openings. The vertical micro well reaction chambers have at, at least one end thereof a plurality of optical micro plugs which are aligned to the vertical micro well reaction chamber openings. The plurality of optical micro plugs allow for the micro well plate to be integrated with macro analytical instrumentation for the analysis, examination, and/or testing of chemicals, reagents or samples provided within the vertical micro well reaction chamber openings.Type: GrantFiled: August 20, 2004Date of Patent: January 12, 2010Assignee: International Business Machines CorporationInventors: Govindarajan Natarajan, David H. Gabriels, Mark W. Kapfhammer, Richard A. Shelleman, Kurt A. Smith
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Publication number: 20090303684Abstract: Systems and methods for cooling electronic devices via enhanced thermal conduction in the gap separating an electronic device from a heat sink are provided. In one embodiment, a system for cooling an electronic device comprises: a heat sink spaced from the integrated circuit by a gap; and a bubbler and an atomizer configured to feed a mixture comprising an atomized liquid and a carrier gas to the gap.Type: ApplicationFiled: June 4, 2008Publication date: December 10, 2009Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Govindarajan Natarajan, Raschid J. Bezama, David L. Gardell, James N. Humenik
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Patent number: 7536870Abstract: A distribution apparatus, system and method for thermal control whereby a plate of a manifold assembly has predetermined surface features positioned on specific locations on a surface thereof for enhancing the cooling capabilities of the assembly. The predetermined surface features of the plate delay a velocity decay of a fluid impinging the surface of the plate, while also increase the surface area of the plate exposed to the impinging liquid, which in turn, maximize both the reliability and thermal performance of the overall thermal system at a given maximum operating pressure.Type: GrantFiled: March 30, 2006Date of Patent: May 26, 2009Assignee: International Business Machines CorporationInventors: Raschid J. Bezama, Govindarajan Natarajan
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Publication number: 20090109628Abstract: Integrated circuit chip cooling methods and systems are disclosed. A method for cooling an integrated circuit chip may comprise: providing a cooling mechanism; positioning an interface medium between the cooling mechanism and the integrated circuit chip; and interfacing the cooling mechanism and the integrated circuit chip through the interface medium; wherein at least one of the cooling mechanism, the integrated circuit chip, or the interface medium includes a convex portion on an interface surface thereof.Type: ApplicationFiled: October 30, 2007Publication date: April 30, 2009Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Raschid J. Bezama, James N. Humenik, Sushumna Iruvanti, Govindarajan Natarajan
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Publication number: 20090095444Abstract: Low-pressure drop thermal assemblies, systems and methods of making low-pressure drop thermal assemblies for use in high power flux situations. A manifold body is attached to a distributor to form a subassembly. This subassembly is in communication with a substrate surface, which has a semiconductor device in need of thermal management thereon. An enclosed cavity is formed between the target substrate surface and the subassembly, and a seal of the cavity protects critical components residing on the active surface of the semiconductor device. The distributor includes a distributed liquid impingement microjet inlet array isolated from and parallel with a distributed microjet drain array for impinging cooling fluid and removing spent heated fluid in a direction orthogonal to a target surface for maximizing the heat transfer rate, and thereby providing high cooling flux capabilities while enabling low-pressure drops.Type: ApplicationFiled: December 18, 2008Publication date: April 16, 2009Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Raschid J. Bezama, Govindarajan Natarajan, Kamal K. Sikka, Hilton T. Toy
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Patent number: 7516776Abstract: Low-pressure drop thermal assemblies, systems and methods of making low-pressure drop thermal assemblies for use in high power flux situations. A manifold body is attached to a distributor to form a subassembly. This subassembly is in communication with a substrate surface, which has a semiconductor device in need of thermal management thereon. An enclosed cavity is formed between the target substrate surface and the subassembly, and a seal of the cavity protects critical components residing on the active surface of the semiconductor device. The distributor includes a distributed liquid impingement microjet inlet array isolated from and parallel with a distributed microjet drain array for impinging cooling fluid and removing spent heated fluid in a direction orthogonal to a target surface for maximizing the heat transfer rate, and thereby providing high cooling flux capabilities while enabling low-pressure drops.Type: GrantFiled: May 19, 2005Date of Patent: April 14, 2009Assignee: International Business Machines CorporationInventors: Raschid J. Bezama, Govindarajan Natarajan, Kamal K. Sikka, Hilton T. Toy
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Publication number: 20090040864Abstract: Disclosed herein is a mixer comprising a base plate; a top plate in intimate contact with a surface of the base plate; the intimate contact preventing a fluid loss from the bottom plate; the top plate comprising a plurality of first ports for the entry of a first fluid and a second fluid; a mixing chamber in fluid communication with the plurality of first ports; a first heating element; and an exit channel for removing an intimate mixture of the first fluid and the second fluid; and a reciprocatory device in physical contact with the mixing chamber; the reciprocatory device being operative to agitate the first fluid and the second fluid.Type: ApplicationFiled: August 7, 2007Publication date: February 12, 2009Applicant: International Business Machines CorporationInventor: Govindarajan Natarajan
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Publication number: 20080282720Abstract: A distribution apparatus, system and method for thermal control whereby a plate of a manifold assembly has predetermined surface features positioned on specific locations on a surface thereof for enhancing the cooling capabilities of the assembly. The predetermined surface features of the plate delay a velocity decay of a fluid impinging the surface of the plate, while also increase the surface area of the plate exposed to the impinging liquid, which in turn, maximize both the reliability and thermal performance of the overall thermal system at a given maximum operating pressure.Type: ApplicationFiled: July 30, 2008Publication date: November 20, 2008Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Raschid J. Bezama, Govindarajan Natarajan
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Publication number: 20080190565Abstract: An apparatus for providing uniform axial load distribution for laminate layers of multilayer ceramic chip carriers includes a base plate configured to support a plurality of green sheet layers thereon, the base plate having at least one resiliently mounted load support bar disposed adjacent outer edges of the base plate. The load support bar is mounted on one or more biasing members such that the top surface of the support bar extends above the top surface of the base plate by a selected distance.Type: ApplicationFiled: April 18, 2008Publication date: August 14, 2008Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Jay A. Bunt, Donald W. Diangelo, Cristian Docu, Thomas Foley, Melvin R. Gottschalk, Lisa A. Hamilton, Thomas A. Kline, Mark J. LaPlante, Hsichang Liu, Sebastian Loscerbo, Govindarajan Natarajan, Olga A. Otieno, Renee L. Weisman
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Publication number: 20080190566Abstract: An apparatus for providing uniform axial load distribution for laminate layers of multilayer ceramic chip carriers includes a base plate configured to support a plurality of green sheet layers thereon, the base plate having at least one resiliently mounted load support bar disposed adjacent outer edges of the base plate. The load support bar is mounted on one or more biasing members such that the top surface of the support bar extends above the top surface of the base plate by a selected distance.Type: ApplicationFiled: April 18, 2008Publication date: August 14, 2008Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Jay A. Bunt, Donald W. Diangelo, Cristian Docu, Thomas Foley, Melvin R. Gottschalk, Lisa A. Hamilton, Thomas A. Kline, Mark J. LaPlante, Hsichang Liu, Sebastian Loscerbo, Govindarajan Natarajan, Olga A. Otieno, Renee L. Weisman
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Publication number: 20080190545Abstract: An apparatus for providing uniform axial load distribution for laminate layers of multilayer ceramic chip carriers includes a base plate configured to support a plurality of green sheet layers thereon, the base plate having at least one resiliently mounted load support bar disposed adjacent outer edges of the base plate. The load support bar is mounted on one or more biasing members such that the top surface of the support bar extends above the top surface of the base plate by a selected distance.Type: ApplicationFiled: April 18, 2008Publication date: August 14, 2008Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Jay A. Bunt, Donald W. Diangelo, Cristian Docu, Thomas Foley, Melvin R. Gottschalk, Lisa A. Hamilton, Thomas A. Kline, Mark J. LaPlante, Hsichang Liu, Sebastian Loscerbo, Govindarajan Natarajan, Olga A. Otieno, Renee L. Weisman
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Patent number: 7407883Abstract: An electronic package and method for forming such package that expands the current capability of lines and/or reducing line resistance for packages with a given feature dimension while relaxing feature tolerances. The methods and structures include electrical wirings having regions of larger wire cross-sectional areas in locations where the package must supply higher current distribution to the electronic devices and/or where signal lines need lower electrical resistance. These larger wire cross-sectional areas are vertically extended conductors applied to either the entire conductor or portions of the conductor.Type: GrantFiled: September 28, 2006Date of Patent: August 5, 2008Assignee: International Business Machines CorporationInventors: Govindarajan Natarajan, Raschid J Bezama
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Patent number: 7344679Abstract: An apparatus and a method are disclosed for providing point of care testing for osmolarity of a bodily fluid. An apparatus is disclosed as having a fluid pathway passing through it for receiving and testing a sample fluid. The invention permits osmolarity testing of a sample fluid wherein the sample fluid has a volume of less than approximately 30 nL, and implements a method and device to measure fluid osmolarity in a clinical setting quickly and accurately, while also reducing evaporation of the fluid.Type: GrantFiled: October 14, 2005Date of Patent: March 18, 2008Assignee: International Business Machines CorporationInventors: Govindarajan Natarajan, James N. Humenik, Scott D. Partington, Srinivasa S. N. Reddy
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Publication number: 20080060792Abstract: A manifold apparatus, system and method for thermally controlling a substrate whereby a manifold body having a microjet array and a drain array traversing there-through in a direction orthogonal to a substrate surface and parallel to each other is attached to the substrate surface for heating or cooling thereof. A cavity of the manifold body resides over the substrate surface such that liquid is emitted from the liquid microjets into the cavity for contact with the substrate surface, while the drains orthogonally remove spent liquid from the cavity. The manifold body is designed and configured into a plurality of cooling cells, whereby each cooling cell has a liquid microjet surrounded by at least three drains for preventing interactions between adjacent liquid microjets within adjacent cooling cells. Gas microjets may also traverse through the manifold body to form an atomized liquid spray for contact with the substrate surface.Type: ApplicationFiled: June 1, 2007Publication date: March 13, 2008Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Daniel Berger, Raschid Bezama, Lester Herron, Bruno Michel, Govindarajan Natarajan
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Publication number: 20080053206Abstract: An apparatus and a method are disclosed for providing point of care testing for osmolarity of a bodily fluid. An apparatus is disclosed as having a fluid pathway passing through it for receiving and testing a sample fluid. The invention permits osmolarity testing of a sample fluid wherein the sample fluid has a volume of less than approximately 30 nL, and implements a method and device to measure fluid osmolarity in a clinical setting quickly and accurately, while also reducing evaporation of the fluid.Type: ApplicationFiled: October 31, 2007Publication date: March 6, 2008Inventors: Govindarajan Natarajan, James Humenik, Scott Partington, Srinivasa Reddy