Patents by Inventor Subramanian Iyer

Subramanian Iyer 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).

  • Publication number: 20060173666
    Abstract: In one embodiment, a method for verifying one or more particular properties of a circuit using a learning strategy to determine suitable values of particular verification parameters includes classifying each of multiple properties of a circuit according to circuit size and selecting a candidate property from the properties. The candidate property set includes one or more particular properties from each property class. The method also includes attempting to verify one or more particular properties of the circuit using the candidate property set and particular values of particular verification parameters. The method also includes determining suitable values of the particular verification parameters according the attempted verification of the particular properties of the circuit using the candidate property set and the particular values of the particular verification parameters.
    Type: Application
    Filed: April 10, 2006
    Publication date: August 3, 2006
    Inventors: Jawahar Jain, Subramanian Iyer, Amit Narayan, Debashis Sahoo, Christian Stangier
  • Patent number: 7083809
    Abstract: Disclosed is a composition comprising a substantially purified Cytokine Inhibitory Factor (CIF) having certain characteristics, including the ability to inhibit RNA transcription of the pro-inflammatory cytokines tumor necrosis factor alpha (TNF-?), interleukin-1-beta (IL-1?), and interleukin-2 (IL-2). Also disclosed is a method for substantially purifying the Cytokine Inhibitory Factor and a method for modulating the immune system of an animal using such composition.
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: August 1, 2006
    Assignee: Arkion Life Sciences, LLC
    Inventors: Subramanian Iyer, William L. Johnson, Lance Nguyen, Steven C. Ross, Ruye Xing
  • Patent number: 7078247
    Abstract: The integrity of a liner in an interconnect structure or other layer in an integrate circuit is tested in a short time by exposing the liner to a reactive gas that attacks the underlying silicon or other material behind the liner. A weak spot in the liner permits the gas to react with the silicon, which produces a visible area that can be readily identified. The test can be performed in a few hours, in contrast to a period of several months required to complete the process, package the circuit and conduct a burn-in test.
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: July 18, 2006
    Assignee: International Business Machines Corporation
    Inventors: Lawrence Bauer, Jr., Kenneth Giewont, Subramanian Iyer, Bosang Kim, Jeffrey Lloyd, Peter Locke, James Norum, Paul Parries, Kent Way, Kwong Hon Wong
  • Publication number: 20060124982
    Abstract: A novel trench-type decoupling capacitor structure and low-cost manufacturing process to create trench decoupling capacitors (decaps). In a unique aspect, the invention necessitates the addition of only a simplified trench to a base logic design.
    Type: Application
    Filed: December 15, 2004
    Publication date: June 15, 2006
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Herbert Ho, John Barth, Ramachandra Divakaruni, Wayne Ellis, Johnathan Faltermeier, Brent Anderson, Subramanian Iyer, Deok-Kee Kim, Randy Mann, Paul Parries
  • Publication number: 20060123226
    Abstract: A method is disclosed for performing security functions on a message payload in a network element. According to one aspect, a network element receives one or more data packets. The network element performs a security function on at least a portion of an application layer message that is contained in one or more payload portions of the one or more data packets. According to another aspect, a network element receives a first request that is destined for a first application. The network element sends, to a second application that sent the first request, a second request for authentication information. The network element receives the authentication information and determines whether the authentication information is valid. If the authentication information is not valid, then the network element prevents the first request from being sent to the first application.
    Type: Application
    Filed: December 7, 2004
    Publication date: June 8, 2006
    Inventors: Sandeep Kumar, Subramanian Srinivasan, Tefcros Anthias, Subramanian Iyer, Christopher Wiborg
  • Publication number: 20060102982
    Abstract: The present invention provides antifuse structures having an integrated heating element and methods of programming the same, the antifuse structures comprising first and second conductors and a dielectric layer formed between the conductors, where one or both of the conductors functions as both a conventional antifuse conductor and as a heating element for directly heating the antifuse dielectric layer during programming.
    Type: Application
    Filed: November 12, 2004
    Publication date: May 18, 2006
    Applicant: International Business Machines Corporation
    Inventors: Byeongiu Park, Subramanian Iyer, Chandrasekheran Kothandaraman
  • Publication number: 20060087001
    Abstract: A programmable device (eFuse), includes: a substrate (10); an insulator (13) on the substrate; an elongated semiconductor material (12) on the insulator, the elongated semiconductor material having a first end (12a), a second end (12b), a fuse link (11) between the ends, and an upper surface S. The semiconductor material includes a dopant having a concentration of at least 10*17/cc. The first end (12a) is wider than the second end (12b), and a metallic material is disposed on the upper surface. The metallic material is physically migratable along the upper surface responsive to an electrical current I flowable through the semiconductor material and through the metallic material.
    Type: Application
    Filed: October 21, 2004
    Publication date: April 27, 2006
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Chandrasekharan Kothandaraman, Subramanian Iyer
  • Publication number: 20050010455
    Abstract: The integrity of a liner in an interconnect structure or other layer in an integrate circuit is tested in a short time by exposing the liner to a reactive gas that attacks the underlying silicon or other material behind the liner. A weak spot in the liner permits the gas to react with the silicon, which produces a visible area that can be readily identified. The test can be performed in a few hours, in contrast to a period of several months required to complete the process, package the circuit and conduct a burn-in test.
    Type: Application
    Filed: June 6, 2003
    Publication date: January 13, 2005
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Lawrence Bauer, Kenneth Giewont, Subramanian Iyer, Bosang Kim, Jeffrey Lloyd, Peter Locke, James Norum, Paul Parries, Kent Way, Kwong Wong
  • Publication number: 20040156857
    Abstract: The invention is directed to a composition and method for the treatment and prevention of inflammation and inflammatory related disorders. The composition is glucosamine in combination with an egg product. It is generally preferred that the egg product is obtained from an avian which has been hyperimmunized with an immunogenic mixture and/or which contains an anti-inflammatory composition.
    Type: Application
    Filed: February 6, 2004
    Publication date: August 12, 2004
    Inventors: Orn Adalsteinsson, Jeffrey G. Hunchar, Subramanian Iyer
  • Patent number: 6706267
    Abstract: The invention is directed to a composition and method for the treatment and prevention of inflammation and inflammatory related disorders. The composition is glucosamine in combination with an egg product. It is generally preferred that the egg product is obtained from an avian which has been hyperimmunized with an immungenic mixture and/or which contains an anti-inflammatory composition.
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: March 16, 2004
    Assignee: Arkion Life Sciences LLC
    Inventors: Orn Adalsteinsson, Jeffrey G. Hunchar, Subramanian Iyer
  • Publication number: 20040005327
    Abstract: The present invention is a novel approach for stimulating or enhancing immune T-cells in an animal. In particular, the invention is directed to an egg, and more specifically, a fraction thereof of a size less than 3000 daltons, obtained from an avian that has been hyperimmunized with one or more immunogens. The ingestion by an animal of an effective amount of the hyperimmune egg or fraction thereof causes a significant increase in the overall T-cell population in that animal.
    Type: Application
    Filed: May 15, 2003
    Publication date: January 8, 2004
    Inventors: Subramanian Iyer, Ruye Xing
  • Patent number: 6624499
    Abstract: The present invention provides a system, apparatus and method of programming via electromigration. A semiconductor fuse which includes a cathode and an anode coupled by a fuse link having an electrically conductive component, such as silicide, is coupled to a power supply. A potential is applied across the conductive fuse link via the cathode and anode in which the potential is of a magnitude to initiate electromigration of silicide from a region of the semiconductor fuse reducing the conductivity of the fuse link. The electromigration is enhanced by effectuating a temperature gradient between the fuse link and one of the cathode and anode responsive to the applied potential. Portions of the semiconductor fuse are selectively cooled in a heat transfer relationship to increase the temperature gradient. In one embodiment, a heat sink is applied to the cathode. The heat sink can be a layer of metal coupled in close proximity to the cathode while insulated from the fuse link.
    Type: Grant
    Filed: September 19, 2002
    Date of Patent: September 23, 2003
    Assignees: Infineon Technologies AG, International Business Machines Corporation
    Inventors: Chandrasekharan Kothandaraman, S. Sundar Kumar Iyer, Subramanian Iyer, Chandrasekhar Narayan
  • Publication number: 20030160297
    Abstract: The present invention provides a system, apparatus and method of programming via electromigration. A semiconductor fuse which includes a cathode and an anode coupled by a fuse link having an electrically conductive component, such as silicide, is coupled to a power supply. A potential is applied across the conductive fuse link via the cathode and anode in which the potential is of a magnitude to initiate electromigration of silicide from a region of the semiconductor fuse reducing the conductivity of the fuse link. The electromigration is enhanced by effectuating a temperature gradient between the fuse link and one of the cathode and anode responsive to the applied potential. Portions of the semiconductor fuse are selectively cooled in a heat transfer relationship to increase the temperature gradient. In one embodiment, a heat sink is applied to the cathode. The heat sink can be a layer of metal coupled in close proximity to the cathode while insulated from the fuse link.
    Type: Application
    Filed: September 19, 2002
    Publication date: August 28, 2003
    Inventors: Chandrasekharan Kothandaraman, S. Sundar Kumar Iyer, Subramanian Iyer, Chandrasekhar Narayan
  • Publication number: 20030152641
    Abstract: Disclosed is a composition comprising a substantially purified Cytokine Inhibitory Factor (CIF) having certain characteristics, including the ability to inhibit RNA transcription of the pro-inflammatory cytokines tumor necrosis factor alpha (TNF-&agr;), interleukin-1-beta (IL-1&bgr;), and interleukin-2 (IL-2). Also disclosed is a method for substantially purifying the Cytokine Inhibitory Factor and a method for modulating the immune system of an animal using such composition.
    Type: Application
    Filed: February 11, 2003
    Publication date: August 14, 2003
    Inventors: Subramanian Iyer, William L. Johnson, Lance Nguyen, Steven C. Ross, Ruye Xing
  • Publication number: 20030143190
    Abstract: Disclosed is an isolated Cytokine Activating Factor (CAF) protein, an isolated nucleic acid molecule encoding a CAF protein, an antibody that selectively binds to a CAF protein, a composition comprising a Cytokine Activating Factor (CAF), and a method for modulating the immune system using the composition. Also disclosed is a method for treating cancer using such a composition.
    Type: Application
    Filed: May 14, 2002
    Publication date: July 31, 2003
    Applicant: DCV, Inc.
    Inventors: Subramanian Iyer, Tay N. Nguyen, Dauh-Rurng Wu, Ruye Xing
  • Publication number: 20030018176
    Abstract: The invention is an acid-chitosan complex which is made up of chitosan, a sufficient amount of one or more acids, and an effective amount of water. This acid-chitosan is water-soluble in a dry form. A further aspect of this invention is various methods for producing such a water-soluble acid-chitosan complex and methods for using this acid-chitosan complex, particularly for reducing fat absorption in an animal.
    Type: Application
    Filed: September 6, 2001
    Publication date: January 23, 2003
    Inventors: J. David Angerer, Donald M. Cyron, Subramanian Iyer, Thomas A. Jerrell
  • Patent number: 6486043
    Abstract: A method for forming a semiconductor devices structure includes providing a semiconductor substrate, forming a deep trench continuously in the substrate to separate a first region from a second region, and then forming a silicon-on-insulator region in the first region while maintaining a non-silicon-on-insulator region in the second region. The deep trench has a depth which is at least as deep as the depth of the buried oxide in the substrate. The invention also includes a device structure resulting from the method.
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: November 26, 2002
    Assignee: International Business Machines Corporation
    Inventors: Robert Hannon, Herbert L. Ho, Subramanian Iyer, S. Sundar Kumar Iyer
  • Patent number: 6433404
    Abstract: A fuse for semiconductor devices, in accordance with the present invention, includes a cathode formed from a first material, an anode formed from a second material and a fuse link connecting the cathode and the anode and formed from the second material. The second material is more susceptible to material migration than the first material when the fuse is electrically active such that material migration is enhanced in the second material.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: August 13, 2002
    Assignees: Infineon Technologies AG, International Business Machines Corporation
    Inventors: Sundar K. Iyer, Chandcasekhar Narayan, Axel Brintzinger, Subramanian Iyer
  • Patent number: 6420337
    Abstract: Disclosed is an isolated Cytokine Activating Factor (CAF) protein, an isolated nucleic acid molecule encoding a CAF protein, an antibody that selectively binds to a CAF protein, a composition comprising a Cytokine Activating Factor (CAF), and a method for modulating the immune system using the composition. Also disclosed is a method for treating cancer using such a composition.
    Type: Grant
    Filed: July 20, 2000
    Date of Patent: July 16, 2002
    Assignee: Arkion Life Sciences LLC
    Inventors: Subramanian Iyer, Tay N. Nguyen, Dauh-Rurng Wu, Ruye Xing
  • Patent number: 6410399
    Abstract: A semiconductor device manufacturing method for silicidizing silicon-containing areas in array regions of dynamic random access memory (DRAMS)and embedded DRAM (eDRAM) devices to lower electrical resistance, and improve device reliability at low temperatures.
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: June 25, 2002
    Assignee: International Business Machines Corporation
    Inventors: Philip Lee Flaitz, Herbert L. Ho, Subramanian Iyer, Babar Khan, Paul C. Parries