Patents by Inventor Rajiv Ranjan

Rajiv Ranjan 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: 8635490
    Abstract: In one example, a backup intrusion detection and prevention (IDP) device includes one or more network interfaces to receive a state update message from a primary IDP device, wherein the state update message indicates a network session being inspected by the primary IDP device and an identified application-layer protocol for the device, to receive an indication that the primary device has switched over or failed over to the backup device, and to receive a plurality of packets of the network session after receiving the indication, each of the plurality of packets comprising a respective payload including application-layer data, a protocol decoder to detect a beginning of a new transaction from the application-layer data of one of the plurality of packets, and a control unit to statefully process only the application-layer data of the network session that include and follow the beginning of the new transaction.
    Type: Grant
    Filed: October 15, 2012
    Date of Patent: January 21, 2014
    Assignee: Juniper Networks, Inc.
    Inventors: Krishna Narayanaswamy, Rajiv Ranjan
  • Publication number: 20130108151
    Abstract: A system and method for generating a focused image of an object is provided. The method comprises obtaining a plurality of images of an object, estimating an initial depth profile of the object, estimating a parallax parameter and a blur parameter for each pixel in of the plurality of images and generating a focused image and a corrected depth profile of the object using a posterior energy function. The posterior energy function is based on the estimated parallax parameter and the blur parameter of each pixel in the plurality of images.
    Type: Application
    Filed: December 17, 2012
    Publication date: May 2, 2013
    Inventors: Rajiv Ranjan Sahay, Rajagopalan Ambassamudram Narayanan
  • Patent number: 8358833
    Abstract: A system and method for generating a focused image of an object is provided. The method comprises obtaining a plurality of images of an object, estimating an initial depth profile of the object, estimating a parallax parameter and a blur parameter for each pixel in of the plurality of images and generating a focused image and a corrected depth profile of the object using a posterior energy function. The posterior energy function is based on the estimated parallax parameter and the blur parameter of each pixel in the plurality of images.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: January 22, 2013
    Assignee: Indian Institute of Technology Madras
    Inventors: Rajiv Ranjan Sahay, Rajagopalan Ambasamudram Narayanan
  • Patent number: 8291258
    Abstract: In one example, a backup intrusion detection and prevention (IDP) device includes one or more network interfaces to receive a state update message from a primary IDP device, wherein the state update message indicates a network session being inspected by the primary IDP device and an identified application-layer protocol for the device, to receive an indication that the primary device has switched over or failed over to the backup device, and to receive a plurality of packets of the network session after receiving the indication, each of the plurality of packets comprising a respective payload including application-layer data, a protocol decoder to detect a beginning of a new transaction from the application-layer data of one of the plurality of packets, and a control unit to statefully process only the application-layer data of the network session that include and follow the beginning of the new transaction.
    Type: Grant
    Filed: January 8, 2010
    Date of Patent: October 16, 2012
    Assignee: Juniper Networks, Inc.
    Inventors: Krishna Narayanaswamy, Rajiv Ranjan
  • Publication number: 20110262030
    Abstract: A system and method for generating a focused image of an object is provided. The method comprises obtaining a plurality of images of an object, estimating an initial depth profile of the object, estimating a parallax parameter and a blur parameter for each pixel in of the plurality of images and generating a focused image and a corrected depth profile of the object using a posterior energy function. The posterior energy function is based on the estimated parallax parameter and the blur parameter of each pixel in the plurality of images.
    Type: Application
    Filed: April 27, 2010
    Publication date: October 27, 2011
    Applicant: INDIAN INSTITUTE OF TECHNOLOGY MADRAS
    Inventors: Rajiv Ranjan Sahay, Rajagopalan Ambasamudram Narayanan
  • Publication number: 20110173490
    Abstract: In one example, a backup intrusion detection and prevention (IDP) device includes one or more network interfaces to receive a state update message from a primary IDP device, wherein the state update message indicates a network session being inspected by the primary IDP device and an identified application-layer protocol for the device, to receive an indication that the primary device has switched over or failed over to the backup device, and to receive a plurality of packets of the network session after receiving the indication, each of the plurality of packets comprising a respective payload including application-layer data, a protocol decoder to detect a beginning of a new transaction from the application-layer data of one of the plurality of packets, and a control unit to statefully process only the application-layer data of the network session that include and follow the beginning of the new transaction.
    Type: Application
    Filed: January 8, 2010
    Publication date: July 14, 2011
    Applicant: Juniper Networks, Inc.
    Inventors: Krishna Narayanaswamy, Rajiv Ranjan
  • Patent number: 7789918
    Abstract: The present invention relates to a additive composition for use as lubricity improver for low sulphur diesel, comprising c) 0.1-10% by weight of ester derivative derived from cashew nut shell liquid (CNSL esters) of formula (I); f) 0.1-10% by weight of ester derivative derived from cashew nut shell liquid of formula (II); g) 50-95% by weight of free fatty acid of the formula RCOOH in which R represents an alkyl/alkenyl group with 12 to 24 carbon atoms. h) 1-30% by weight of synthetic esters derived by esterifying tri, tetra, penta hydric alcohols with carboxylic acids such as lauric, palmitic, linoleic, ricinoleic etc.
    Type: Grant
    Filed: August 9, 2004
    Date of Patent: September 7, 2010
    Assignee: Indian Oil Corporation Limited
    Inventors: Deepak Kumar Tuli, Ajay Kumar Arora, Shanti Prakash, Rajiv Ranjan, Krishan Kumar Swami, Ajay Kumar, Rakesh Sarin, Ram Prakash Verma, Niranjan Raghunath Raje
  • Patent number: 7427303
    Abstract: The present invention relates a surfactant composition for use as an emulsifier in water blended fuel mixture. The said composition includes ethoxylate of cashew nut shell liquid. In addition ethoxylate of cashew nut shell liquid, the said composition comprises a co-surfactant having a hydrophilic lipophilic balance in the range of 4 to 12 and a polymeric dispersant. The water blended fuel mixture using emulsifiers of the present invention, overcome some of the shortcomings of the previously known emulsions. The ethoxylate of cashew nut shell liquid is of the formula (I).
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: September 23, 2008
    Assignee: Indian Oil Corporation Limited
    Inventors: Rakesh Sarin, Deepak Kumar Tuli, Shanti Parkash, Krishan Kumar Swami, Rajiv Ranjan, Ram Prakash Verma, Niranjan Raghunath Raje, Akhilesh Kumar Bhatnagar
  • Publication number: 20080098642
    Abstract: The present invention relates to a additive composition for use as lubricity improver for low sulphur diesel, comprising c) 0.1-10% by weight of ester derivative derived from cashew nut shell liquid (CNSL esters) of formula (I); f) 0.1-10% by weight of ester derivative derived from cashew nut shell liquid of formula (II); g) 50-95% by weight of free fatty acid of the formula RCOOH in which R represents an alkyl/alkenyl group with 12 to 24 carbon atoms. h) 1-30% by weight of synthetic esters derived by esterifying tri, tetra, penta hydric alcohols with carboxylic acids such as lauric, palmitic, linoleic, ricinoleic etc.
    Type: Application
    Filed: August 9, 2004
    Publication date: May 1, 2008
    Inventors: Deepak Kumar Tuli, Ajay Kumar Arora, Shanti Prakash, Rajiv Ranjan, Krishan Kumar Swami, Ajay Kumar, Rakesh Sarin, Ram Prakash Verma, Niranjan Raghunath Raje
  • Patent number: 7354630
    Abstract: A granular perpendicular magnetic recording medium, comprising: (a) a non-magnetic substrate having a surface; and (b) a layer stack on the substrate surface, the layer stack including a granular perpendicular magnetic recording layer formed by: (1) reactively sputtering a target comprised of a magnetic alloy in an atmosphere containing at least one ionized oxygen species derived from a source gas comprised of a compound of oxygen and at least one other non-metallic element; and (2) oxidizing an exposed upper surface of the granular perpendicular magnetic recording layer by generating a plasma containing at least one ionized oxygen species derived from a source gas comprised of a compound of oxygen and at least one other non-metallic element and treating the exposed upper surface of the granular perpendicular magnetic recording layer with the plasma.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: April 8, 2008
    Assignee: Seagate Technology LLC
    Inventors: Rajiv Ranjan, Thomas Patrick Nolan
  • Patent number: 7354618
    Abstract: A method of manufacturing magnetic recording media, comprising sequential steps of: (a) providing an apparatus for manufacturing the media; (b) supplying the apparatus with at least one substrate for the media; (c) forming a magnetic recording layer on the at least one substrate in a first portion of the apparatus, the magnetic recording layer including a surface; (d) treating the surface of the magnetic recording layer with an ionized oxygen-containing plasma in a second portion of the apparatus to form a plasma oxidized surface layer; and (e) forming a protective overcoat layer on the plasma oxidized surface layer of the magnetic recording layer in a third portion of the apparatus.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: April 8, 2008
    Assignee: Seagate Technology LLC
    Inventors: Chung-Hee Chang, Xiaoding Ma, Michael Joseph Stirniman, Jeffrey Shane Reiter, Samuel Dacke Harkness, IV, Rajiv Ranjan
  • Publication number: 20060109591
    Abstract: A method for making substrates is disclosed. The method comprises providing a rod, which is made out of a substrate material and has an outside diameter substantially the same size as the outside diameter of a finished substrate and an inside diameter substantially the same size as the inside diameter of the finished substrate. The rod is cut with a multi-wire cutter to make a substrate slice substantially the same size as a finished substrate. The multi-wire cutter has wires positioned to substantially match the final thickness of the finished substrate. Additionally the cutting process is facilitated by using slurry and by providing a rocking motion between the rod and the wires of the multi-wire cutter so that the wires contact the rod in a rocking motion with respect to a normal to the center of the rod.
    Type: Application
    Filed: November 19, 2004
    Publication date: May 25, 2006
    Inventors: Rajiv Ranjan, Shashi Agarwal, Ian Beresford, Koji Shima, Keith Goodson, Joel Weiss
  • Publication number: 20060051623
    Abstract: A magnetic recording medium having a substrate and a SiO2-containing magnetic layer comprising grains is disclosed. The magnetic layer has substantial SiO2 between the grains. This condition is achieved by sputter depositing the magnetic layer in a chamber containing a gas under vacuum. The gas contains substantially no oxygen. Such a gas is one into which no oxygen is intentionally introduced to create an oxygen-containing gas mixture but may contain a trace amount of oxygen molecules in an amount that are present in air under a similar vacuum as that of the gas in the chamber.
    Type: Application
    Filed: October 12, 2005
    Publication date: March 9, 2006
    Applicant: SEAGATE TECHNOLOGY
    Inventors: Stella Wu, Thomas Nolan, Samuel Harkness, Rajiv Ranjan
  • Publication number: 20050178651
    Abstract: A method of forming a uniform thickness layer of a selected material on a surface of a substrate comprises steps of: (a) providing a multi-stage cathode sputtering apparatus comprising a group of spaced-apart cathode/target assemblies and a means for transporting at least one substrate/workpiece past each cathode/target assembly, each cathode/target assembly comprising a sputtering surface oriented substantially parallel to the first surface of the substrate during transport past the group of cathode/target assemblies, the group of cathode/target assemblies adapted for providing different angular sputtered film thickness profiles; and (b) transporting the substrate past each cathode/target assembly while providing different sputtered film thickness profiles from at least some of the cathode/target assemblies, such that a plurality of sub-layers is deposited on the surface of the substrate/workpiece which collectively form a uniform thickness layer of the selected material.
    Type: Application
    Filed: February 12, 2004
    Publication date: August 18, 2005
    Inventors: Rajiv Ranjan, Jeffrey Reiter, Thomas Nolan
  • Publication number: 20050163037
    Abstract: A perpendicular magnetic recording medium having a substrate and a magnetic underlayer on the substrate, the magnetic underlayer having an easy axis of magnetization substantially directed in a radial or transverse direction, and a process for manufacturing the perpendicular magnetic recording medium are disclosed.
    Type: Application
    Filed: March 22, 2005
    Publication date: July 28, 2005
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Chung-Hee Chang, Rajiv Ranjan
  • Publication number: 20050100664
    Abstract: A method of manufacturing magnetic recording media, comprising sequential steps of: (a) providing an apparatus for manufacturing the media; (b) supplying the apparatus with at least one substrate for the media; (c) forming a magnetic recording layer on the at least one substrate in a first portion of the apparatus, the magnetic recording layer including a surface; (d) treating the surface of the magnetic recording layer with an ionized oxygen-containing plasma in a second portion of the apparatus to form a plasma oxidized surface layer; and (e) forming a protective overcoat layer on the plasma oxidized surface layer of the magnetic recording layer in a third portion of the apparatus.
    Type: Application
    Filed: November 12, 2003
    Publication date: May 12, 2005
    Inventors: Chung-Hee Chang, Xiaoding Ma, Michael Stirniman, Jeffrey Reiter, Samuel Harkness, Rajiv Ranjan
  • Publication number: 20050098426
    Abstract: A method of manufacturing magnetic recording media, comprising sequential steps of: (a) providing an apparatus for manufacturing the media; (b) supplying the apparatus with at least one substrate for the media; (c) forming a magnetic recording layer on the at least one substrate in a first portion of the apparatus, the magnetic recording layer including an exposed surface; (d) thermally oxidizing the exposed surface of the magnetic recording layer in a second portion of the apparatus; and (e) forming a protective overcoat layer on the thermally oxidized exposed surface of the magnetic recording layer in a third portion of the apparatus.
    Type: Application
    Filed: November 12, 2003
    Publication date: May 12, 2005
    Inventors: Rajiv Ranjan, Chung-Hee Chang
  • Publication number: 20050100764
    Abstract: A granular perpendicular magnetic recording medium, comprising: (a) a non-magnetic substrate having a surface; and (b) a layer stack on the substrate surface, the layer stack including a granular perpendicular magnetic recording layer formed by: (1) reactively sputtering a target comprised of a magnetic alloy in an atmosphere containing at least one ionized oxygen species derived from a source gas comprised of a compound of oxygen and at least one other non-metallic element; and (2) oxidizing an exposed upper surface of the granular perpendicular magnetic recording layer by generating a plasma containing at least one ionized oxygen species derived from a source gas comprised of a compound of oxygen and at least one other non-metallic element and treating the exposed upper surface of the granular perpendicular magnetic recording layer with the plasma.
    Type: Application
    Filed: November 6, 2003
    Publication date: May 12, 2005
    Inventors: Rajiv Ranjan, Thomas Nolan
  • Publication number: 20050095421
    Abstract: A magnetic recording medium having a substrate and a SiO2-containing magnetic layer comprising grains is disclosed. The magnetic layer has substantial SiO2 between the grains. This condition is achieved by sputter depositing the magnetic layer in a chamber containing a gas under vacuum. The gas contains substantially no oxygen. Such a gas is one into which no oxygen is intentionally introduced to create an oxygen-containing gas mixture but may contain a trace amount of oxygen molecules in an amount that are present in air under a similar vacuum as that of the gas in the chamber.
    Type: Application
    Filed: November 3, 2003
    Publication date: May 5, 2005
    Applicant: SEAGATE TECHNOLOGY
    Inventors: Zhong Wu, Thomas Nolan, Samuel Harkness, Rajiv Ranjan
  • Publication number: 20050037237
    Abstract: Carbon or boron is added into the CoCr layers of a multiplayer perpendicular magnetic media structure to reduce media noise. The perpendicular magnetic media structure has sharp interfaces between Co-alloy layers and Pd or Pt layers and significantly reduced exchange coupling. In accordance with one embodiment of the invention, the perpendicular magnetic media structure with carbon or boron additives is 700 ? FeCo30.8B12/20 ? TaOx/700 ? FeCo30.8B12/20 ? TaOx/700 ? FeCo30.8B12/20 ? TaOx/158 ? FeCo30.8B12/17 ? Ta/49 ? ITO/33 ? CoCr37Ru10/2.5 ? COy/2.5 ? C/[(CoCr9)C6.8/Pd]19/50 ? CHN. [(CoCr9)C6.8/Pd]19 means 19 layers of the bi-layer stack (CoCr9)C6.8/Pd. TaOx stands for surface-oxidized Ta and COy stands for C oxides . ITO stands for Indium Tin Oxide and consists of In2O3 and Sn2O5 at 80 and 20 molecular percent respectively. CHN refers to hydrogenated and nitrogenated carbon.
    Type: Application
    Filed: March 28, 2003
    Publication date: February 17, 2005
    Inventors: Qixu Chen, Charles Brucker, Rajiv Ranjan