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: 9267696
    Abstract: An air temperature and humidity control device is provided including a first heat pump having a compressor, an expansion valve, a condenser, and an evaporator. The first heat pump has a refrigerant circulating there through. A humidity controller includes a first contactor fluidly coupled to the evaporator and condenser. The first contact includes at least one contact module having a porous sidewall that defines an internal space through which a hygroscopic material flows. A first air flow is in communication with the porous sidewall of the first contactor. The device also has a second heat pump including a first polishing coil. The first polishing coil is substantially aligned with and arranged generally downstream from the first contactor relative to the first air flow.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: February 23, 2016
    Assignee: CARRIER CORPORATION
    Inventors: David W. Gerlach, Sherif Kandil, Parmesh Verma, Frederick J. Cogswell, Rajiv Ranjan, Ahmad M. Mahmoud, Richard G. Lord
  • Patent number: 9186622
    Abstract: A method of separating oxygen from nitrogen involves delivering air to a first side of a membrane comprising a polymer support and a layer of zeolite nanosheet particles with thickness of 2 nm to 10 nm and mean diameter of 5 nm to 5000 nm. The delivered air provides a pressure differential between opposite sides of the membrane, thus causing oxygen in the hollow core to diffuse through the polymer support and the zeolite nanosheet layer to the second side of the membrane. The preferential diffusion of oxygen (compared to diffusion of nitrogen) through the membrane produces nitrogen-enriched air on the first side of the membrane and oxygen-enriched air on the second side of the membrane.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: November 17, 2015
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Rajiv Ranjan, Zissis A. Dardas
  • Publication number: 20140264967
    Abstract: A contactor configured for use in a dehumidification system is provided including a plurality of contact modules. Each contact module has a porous sidewall that defines an internal space through which a hygroscopic material flows. Adjacent contact modules are fluidly coupled to form a multipass flow path for the hygroscopic material through the contactor.
    Type: Application
    Filed: January 15, 2014
    Publication date: September 18, 2014
    Applicant: Carrier Corporation
    Inventors: Sherif Kandil, Kenneth David Smith, Zidu Ma, Rajiv Ranjan, Frederick J. Cogswell, Zissis A. Dardas, Bart A. Van Hassel
  • Publication number: 20140245772
    Abstract: An air temperature and humidity control device is provided including a first heat pump having a compressor, an expansion valve, a condenser, and an evaporator. The first heat pump has a refrigerant circulating there through. A humidity controller includes a first contactor fluidly coupled to the evaporator and condenser. The first contact includes at least one contact module having a porous sidewall that defines an internal space through which a hygroscopic material flows. A first air flow is in communication with the porous sidewall of the first contactor. The device also has a second heat pump including a first polishing coil. The first polishing coil is substantially aligned with and arranged generally downstream from the first contactor relative to the first air flow.
    Type: Application
    Filed: February 27, 2014
    Publication date: September 4, 2014
    Applicant: Carrier Corporation
    Inventors: David W. Gerlach, Sherif Kandil, Parmesh Verma, Frederick J. Cogswell, Rajiv Ranjan, Ahmad M. Mahmoud, Richard G. Lord
  • Publication number: 20140238057
    Abstract: A contactor for an air temperature and humidity control device is provided including a plurality of contact modules. Each contact module has a generally porous sidewall configured to define an internal space through which a hygroscopic material flows. A first airstream passes over a first portion of the plurality of contact modules. A second airstream passes over a second portion of the plurality of contact modules.
    Type: Application
    Filed: February 20, 2014
    Publication date: August 28, 2014
    Applicant: Carrier Corporation
    Inventors: Sherif Kandil, Zidu Ma, Rajiv Ranjan, Gary D. Winch
  • Publication number: 20140223947
    Abstract: An air temperature and humidity control device is provided including a heat pump and a humidity controller. The heat pump has a condenser, a first evaporator, a compressor, and a second evaporator. The humidity controller includes a first contactor fluidly coupled to the second evaporator. The first contactor includes at least one contact module having a porous sidewall that defines an internal space through which a liquid desiccant flows. A liquid source is coupled to the first contactor such that a second liquid provided by the liquid source flows through the first contactor adjacent an external side of the porous sidewall. Heat and/or water vapor transfers between the second liquid and the liquid desiccant.
    Type: Application
    Filed: February 10, 2014
    Publication date: August 14, 2014
    Applicant: Carrier Corporation
    Inventors: Rajiv Ranjan, Gary D. Winch
  • Patent number: 8718357
    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 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: December 17, 2012
    Date of Patent: May 6, 2014
    Assignee: Indian Institute of Technology Madras
    Inventors: Rajiv Ranjan Sahay, Rajagopalan Ambassamudram Narayanan
  • Patent number: 8650644
    Abstract: A computing device may receive compressed data that includes a sequence of references corresponding to dictionary words used to compress the compressed data. The computing device may obtain the dictionary words used to compress the compressed data, and identify malicious content corresponding to one or more of the dictionary words. The computing device may also identify malicious content corresponding to the compressed data based on the one or more dictionary words and produce a notification of the malicious content corresponding to the compressed data.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: February 11, 2014
    Assignee: Juniper Networks, Inc.
    Inventors: Rajiv Ranjan, Sunil Ravi
  • 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