Patents by Inventor Venkat Raghavan

Venkat Raghavan 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: 20130069200
    Abstract: A method of forming a capacitor structure comprises: forming a doped polysilicon layer on an underlying dielectric layer; forming a dielectric stack on the doped polysilicon layer; forming a contact hole in the dielectric stack to expose a surface region of the doped polysilsicon layer; forming a conductive contact plug that fills the contact hole and is in contact with the exposed surface of the doped polysilicon layer; forming a plurality of trenches in the dielectric stack such that each trench exposes a corresponding surface region of the doped polysilicon layer; forming a conductive bottom capacitor plate on exposed surfaces of the of the dielectric stack an don exposed surfaces of the doped polysilicon layer; forming a capacitor dielectric layer on the bottom capacitor plate; and forming a conductive top capacitor plate on the capacitor dielectric layer.
    Type: Application
    Filed: September 21, 2011
    Publication date: March 21, 2013
    Inventors: Venkat Raghavan, Andrew Strachan
  • Publication number: 20120172700
    Abstract: Systems and methods for supporting a diagnostic workflow from a computer system are disclosed herein. In accordance with one implementation, a set of pre-identified anatomical landmarks associated with one or more structures of interest within one or more medical images are presented to a user. In response to a user input selecting at least one or more regions of interest including one or more of the pre-identified anatomical landmarks, the user is automatically navigated to the selected region of interest. In another implementation, a second user input selecting one or more measurement tools is received. An evaluation may be automatically determined based on one or more of the set of anatomical landmarks in response to the second user input.
    Type: Application
    Filed: February 1, 2012
    Publication date: July 5, 2012
    Applicant: SIEMENS MEDICAL SOLUTIONS USA, INC.
    Inventors: Arun Krishnan, Marcos Salganicoff, Xiang Sean Zhou, Venkat Raghavan Ramamurthy, Luca Bogoni, Gerardo Hermosillo Valadez
  • Publication number: 20120132975
    Abstract: An electrically programmable read only memory (EPROM) BIT cell structure formed on a semiconductor substrate comprises an N-type epitaxial layer formed on the semiconductor substrate, an N-type well region formed in the epitaxial layer, LOCOS field oxide formed at the periphery of the well region to define an active device region in the well region, a field oxide ring formed in the active region and space-apart from the LOCOS field oxide to define an EPROM BIT cell region, and an EPROM BIT cell formed in the EPROM BIT cell region.
    Type: Application
    Filed: November 29, 2010
    Publication date: May 31, 2012
    Inventors: Venkat Raghavan, Andrew Strachan
  • Patent number: 8160314
    Abstract: A system and method for linking volumes of interest (VOIs) across timepoints are provided. The method comprises: loading an image dataset of a first timepoint and an image dataset of a second timepoint; registering the image dataset of the first timepoint and the image dataset of the second timepoint; displaying the image dataset of the first timepoint and the image dataset of the second timepoint; selecting a VOI in the image dataset of the first timepoint and the image dataset of the second timepoint; and linking the VOIs in the image dataset of the first timepoint and the image dataset of the second timepoint.
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: April 17, 2012
    Assignees: Siemens Aktiengesellschaft, Siemens Medical Solutions USA, Inc.
    Inventors: Venkat Raghavan Ramamurthy, Arun Krishnan, Christian Beldinger, Juergen Soldner, Maxim Mamin, Axel Barth, Stefan Käpplinger, Michael Gluth, Peggy Hawman, Darrell Burckhardt, Axel Platz
  • Patent number: 8084313
    Abstract: A method for forming BiCMOS integrated circuits and structures formed according to the method. After forming doped wells and gate stacks for the CMOS devices and collector and base regions for the bipolar junction transistor, an emitter layer is formed within an emitter window. A dielectric material layer is formed over the emitter layer and remains in place during etching of the emitter layer and removal of the etch mask. The dielectric material layer further remains in place during source/drain implant doping and activation of the implanted source/drain dopants. The dielectric material layer functions as a thermal barrier, to limit out-diffusion of the emitter dopants during the activation step.
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: December 27, 2011
    Assignee: Agere Systems Inc.
    Inventors: Arun K. Nanda, Venkat Raghavan, Nace Rossi
  • Patent number: 8068650
    Abstract: A method for lesion detection includes acquiring pre-therapy medical image data from a first modality. Post-therapy medical image data is acquired from a second modality. A transformation matrix for transforming from an image space of the first modality to an image space of the second modality is calculated. A volume of interest is defined from the medical image data of the first modality. The volume of interest includes one or more lesions. The volume of interest is automatically copied to the medical image data of the second modality using the calculated transformation matrix. Treatment is directed to the lesion using the medical image data of the second modality including the copied volume of interest data.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: November 29, 2011
    Assignees: Siemens Information Systems, Ltd., Siemens Medical Solutions USA, Inc.
    Inventors: Shashi Kumar, Xiang Zhou, Karthikeyan Kaliyamoorthi, Venkat Raghavan Ramamurthy, Arun Krishnan
  • Publication number: 20110162055
    Abstract: A method, system and computer program for business process automation facilitates transforming a user's identity/credentials as part of the enablement of transaction fulfillment, e.g., within a SOA environment. In one embodiment, identity and attribute information is added to one or more business process models that each represents a sub-transaction within an overall transaction fulfillment business process flow. As the business model is mapped to an execution environment, the identity and attribute information in the model is used to configure appropriate tooling to define the identity/attribute transformation required to complete the particular portion of the transaction represented by the model.
    Type: Application
    Filed: December 30, 2009
    Publication date: June 30, 2011
    Applicant: International Business Machines Corporation
    Inventors: Heather Maria Hinton, Venkat Raghavan, Sridhar R. Muppidi, Casey M. Plunkett
  • Patent number: 7891000
    Abstract: A security management system provides rules for monitoring network activity of applications to groups of host, computers, specifically activity indicating that communications mechanisms have been established (i.e. open TCP ports) but are receiving little or no use (i.e., few connection acceptances). Agents on the hosts utilize monitoring software inserted between the applications and the network protocol stacks. The agents store network activity data gathered during the monitoring in local storage, and periodically upload the data to a centralized server in a compressed and optionally encrypted fashion. The server uses the uploaded data from all hosts to update a security management database reflecting the network activity of all the hosts. Reports may be generated to identify activity that may present security risks, such as open but inactive ports, to enable a network administrator to take remedial action such as de-activating or de-installing applications.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: February 15, 2011
    Assignee: Cisco Technology, Inc.
    Inventors: Venkat Raghavan Rangamani, Philip J. S. Gladstone, Brian F. Costello
  • Publication number: 20100303314
    Abstract: A method is provided for detecting a corresponding region of interest in digital medical images, the method including receiving a plurality of digital images including a primary image, at least one of the images being a projective image, identifying anatomical landmarks and structures within each of the images and correlating the images based on the identified anatomical landmarks and structures identifying a location of interest in the primary image, and automatically identifying a region of interest in the rest of the images, the region of interest corresponding to the identified location of interest in the primary image.
    Type: Application
    Filed: May 28, 2010
    Publication date: December 2, 2010
    Applicant: Siemens Medical Solutions USA, Inc.
    Inventors: Yuanhsi (Tony) Chen, Zhigang Peng, Venkat Raghavan Ramamurthy, Xiang Sean Zhou
  • Patent number: 7840050
    Abstract: A system and method for piecewise registration of timepoints are provided. The method comprises: selecting an image dataset of a first or second timepoint to be registered; defining a sub-volume in the selected image dataset; and registering the sub-volume with a whole-volume of the unselected image dataset.
    Type: Grant
    Filed: May 3, 2006
    Date of Patent: November 23, 2010
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Venkat Raghavan Ramamurthy, Christian Beldinger
  • Publication number: 20100273301
    Abstract: A method for forming BiCMOS integrated circuits and structures formed according to the method. After forming doped wells and gate stacks for the CMOS devices and collector and base regions for the bipolar junction transistor, an emitter layer is formed within an emitter window. A dielectric material layer is formed over the emitter layer and remains in place during etching of the emitter layer and removal of the etch mask. The dielectric material layer further remains in place during source/drain implant doping and activation of the implanted source/drain dopants. The dielectric material layer functions as a thermal barrier, to limit out-diffusion of the emitter dopants during the activation step.
    Type: Application
    Filed: July 8, 2010
    Publication date: October 28, 2010
    Applicant: Agere Systems Inc.
    Inventors: Arun K. Nanda, Venkat Raghavan, Nace Rossi
  • Patent number: 7776678
    Abstract: A method for forming BiCMOS integrated circuits and structures formed according to the method. After forming doped wells and gate stacks for the CMOS devices and collector and base regions for the bipolar junction transistor, an emitter layer is formed within an emitter window. A dielectric material layer is formed over the emitter layer and remains in place during etching of the emitter layer and removal of the etch mask. The dielectric material layer further remains in place during source/drain implant doping and activation of the implanted source/drain dopants. The dielectric material layer functions as a thermal barrier, to limit out-diffusion of the emitter dopants during the activation step.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: August 17, 2010
    Assignee: Agere Systems Inc.
    Inventors: Arun K. Nanda, Venkat Raghavan, Nace Rossi
  • Publication number: 20090313495
    Abstract: A method for synchronizing patient data between at least two independent applications in a distributed environment includes capturing screen information from a display window of a first application client that is displaying a medical image of a patient, analyzing the screen information captured from the first application client display to extract patient identifying information, and synchronizing a display of information of the patient on a second application system display screen with the first application display window using the extracted patient identification information.
    Type: Application
    Filed: June 8, 2009
    Publication date: December 17, 2009
    Applicant: Siemens Medical Solutions USA, Inc.
    Inventors: Arun Krishnan, Venkat Raghavan Ramamurthy, Venkata Tumuluri
  • Patent number: 7631346
    Abstract: A method, system, apparatus, and computer program product are presented to support computing systems of different enterprises that interact within a federated computing environment. Federated single-sign-on operations can be initiated at the computing systems of federation partners on behalf of a user even though the user has not established a user account at a federation partner prior to the initiation of the single-sign-on operation. For example, an identity provider can initiate a single-sign-on operation at a service provider while attempting to obtain access to a controlled resource on behalf of a user. When the service provider recognizes that it does not have a linked user account for the user that allows for a single-sign-on operation with the identity provider, the service provider creates a local user account. The service provider can also pull user attributes from the identity provider as necessary to perform the user account creation operation.
    Type: Grant
    Filed: April 1, 2005
    Date of Patent: December 8, 2009
    Assignee: International Business Machines Corporation
    Inventors: Heather Maria Hinton, Ivan Matthew Milman, Venkat Raghavan, Shane Bradley Weeden
  • Patent number: 7616799
    Abstract: A system and method for monitoring disease progression or response to therapy using multi-modal visualization are provided. The method comprises: selecting a first image dataset of a first timepoint; loading the first image dataset of the first timepoint; selecting a second image dataset of a second timepoint; loading the second image dataset of the second timepoint; registering the first image dataset of the first timepoint and the second image dataset of the second timepoint; and displaying the first image dataset of the first timepoint and the second image dataset of the second timepoint.
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: November 10, 2009
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Venkat Raghavan Ramamurthy, Arun Krishnan, Christian Beldinger, Juergen Soldner, Maxim Mamin, Axel Barth, Stefan Käpplinger, Michael Gluth, Peggy Hawman, Darrell Burckhardt, Axel Platz
  • Patent number: 7510944
    Abstract: In a method of forming MIM capacitor structure, a TiW layer is formed and a capacitor mask is used to define areas of the TiW layer that will be sued in the formation of the MIM capacitor. A capacitor mask is then used to expose surface areas of the TiW layer, followed by deposition of a capacitor dielectric layer. A via mask and etch are then performed to provide a contact via to the bottom plate TiW layer. After the via etch, a Ti/TiN liner stack is deposited. The Ti/TiN multilayer stacked film serves as the capacitor top plate as well as the via contact liner film. Next, Tungsten is deposited to fill the vias and a Tungsten planarization step is performed.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: March 31, 2009
    Assignee: National Semiconductor Corporation
    Inventors: Venkat Raghavan, Andrew Strachan
  • Publication number: 20090011553
    Abstract: A method for forming BiCMOS integrated circuits and structures formed according to the method. After forming doped wells and gate stacks for the CMOS devices and collector and base regions for the bipolar junction transistor, an emitter layer is formed within an emitter window. A dielectric material layer is formed over the emitter layer and remains in place during etching of the emitter layer and removal of the etch mask. The dielectric material layer further remains in place during source/drain implant doping and activation of the implanted source/drain dopants. The dielectric material layer functions as a thermal barrier, to limit out-diffusion of the emitter dopants during the activation step.
    Type: Application
    Filed: September 11, 2008
    Publication date: January 8, 2009
    Applicant: Agere Systems Inc.
    Inventors: Arun K. Nanda, Venkat Raghavan, Nace Rossi
  • Publication number: 20080260222
    Abstract: A method for lesion detection includes acquiring pre-therapy medical image data from a first modality. Post-therapy medical image data is acquired from a second modality. A transformation matrix for transforming from an image space of the first modality to an image space of the second modality is calculated. A volume of interest is defined from the medical image data of the first modality. The volume of interest includes one or more lesions. The volume of interest is automatically copied to the medical image data of the second modality using the calculated transformation matrix. Treatment is directed to the lesion using the medical image data of the second modality including the copied volume of interest data.
    Type: Application
    Filed: March 27, 2008
    Publication date: October 23, 2008
    Applicant: Siemens Medical Solutions USA, Inc.
    Inventors: Shashi Kumar, Xiang Zhou, Karthikeyan Kaliyamoorthi, Venkat Raghavan Ramamurthy, Arun Krishnan
  • Patent number: 7439119
    Abstract: A method for forming BiCMOS integrated circuits and structures formed according to the method. After forming doped wells and gate stacks for the CMOS devices and collector and base regions for the bipolar junction transistor, an emitter layer is formed within an emitter window. A dielectric material layer is formed over the emitter layer and remains in place during etching of the emitter layer and removal of the etch mask. The dielectric material layer further remains in place during source/drain implant doping and activation of the implanted source/drain dopants. The dielectric material layer functions as a thermal barrier, to limit out-diffusion of the emitter dopants during the activation step.
    Type: Grant
    Filed: February 24, 2006
    Date of Patent: October 21, 2008
    Assignee: Agere Systems Inc.
    Inventors: Arun K. Nanda, Venkat Raghavan, Nace Rossi
  • Patent number: 7409667
    Abstract: A technique generates circuit board modeling data for a circuit board structure having multiple layers. The technique includes receiving a set of global circuit board dimension parameters from a user. The set of global circuit board dimension parameters defines a set of global circuit board dimensions of the circuit board structure. The technique further includes forming, for each layer, a set of individual circuit board dimension parameters defining a set of individual circuit board dimensions for that layer based on the set of global circuit board dimension parameters. The technique further includes providing a script for use by a 3D modeling subsystem. The script includes a set of circuit board design values based on the set of individual circuit board dimension parameters formed for each layer. Other properties such as layer width and thickness, via dimensions, etc. are handled in a similar manner.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: August 5, 2008
    Assignee: EMC Corporation
    Inventors: Jason Pritchard, Venkat Raghavan Satagopan