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).
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Patent number: 9267696Abstract: 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: GrantFiled: February 27, 2014Date of Patent: February 23, 2016Assignee: CARRIER CORPORATIONInventors: David W. Gerlach, Sherif Kandil, Parmesh Verma, Frederick J. Cogswell, Rajiv Ranjan, Ahmad M. Mahmoud, Richard G. Lord
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Patent number: 9186622Abstract: 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: GrantFiled: June 11, 2014Date of Patent: November 17, 2015Assignee: Hamilton Sundstrand CorporationInventors: Rajiv Ranjan, Zissis A. Dardas
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Publication number: 20140264967Abstract: 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: ApplicationFiled: January 15, 2014Publication date: September 18, 2014Applicant: Carrier CorporationInventors: Sherif Kandil, Kenneth David Smith, Zidu Ma, Rajiv Ranjan, Frederick J. Cogswell, Zissis A. Dardas, Bart A. Van Hassel
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Publication number: 20140245772Abstract: 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: ApplicationFiled: February 27, 2014Publication date: September 4, 2014Applicant: Carrier CorporationInventors: David W. Gerlach, Sherif Kandil, Parmesh Verma, Frederick J. Cogswell, Rajiv Ranjan, Ahmad M. Mahmoud, Richard G. Lord
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Publication number: 20140238057Abstract: 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: ApplicationFiled: February 20, 2014Publication date: August 28, 2014Applicant: Carrier CorporationInventors: Sherif Kandil, Zidu Ma, Rajiv Ranjan, Gary D. Winch
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Publication number: 20140223947Abstract: 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: ApplicationFiled: February 10, 2014Publication date: August 14, 2014Applicant: Carrier CorporationInventors: Rajiv Ranjan, Gary D. Winch
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Patent number: 8718357Abstract: 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: GrantFiled: December 17, 2012Date of Patent: May 6, 2014Assignee: Indian Institute of Technology MadrasInventors: Rajiv Ranjan Sahay, Rajagopalan Ambassamudram Narayanan
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Patent number: 8650644Abstract: 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: GrantFiled: December 28, 2011Date of Patent: February 11, 2014Assignee: Juniper Networks, Inc.Inventors: Rajiv Ranjan, Sunil Ravi
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Patent number: 8635490Abstract: 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: GrantFiled: October 15, 2012Date of Patent: January 21, 2014Assignee: Juniper Networks, Inc.Inventors: Krishna Narayanaswamy, Rajiv Ranjan
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Publication number: 20130108151Abstract: 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: ApplicationFiled: December 17, 2012Publication date: May 2, 2013Inventors: Rajiv Ranjan Sahay, Rajagopalan Ambassamudram Narayanan
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Patent number: 8358833Abstract: 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: GrantFiled: April 27, 2010Date of Patent: January 22, 2013Assignee: Indian Institute of Technology MadrasInventors: Rajiv Ranjan Sahay, Rajagopalan Ambasamudram Narayanan
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Patent number: 8291258Abstract: 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: GrantFiled: January 8, 2010Date of Patent: October 16, 2012Assignee: Juniper Networks, Inc.Inventors: Krishna Narayanaswamy, Rajiv Ranjan
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Publication number: 20110262030Abstract: 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: ApplicationFiled: April 27, 2010Publication date: October 27, 2011Applicant: INDIAN INSTITUTE OF TECHNOLOGY MADRASInventors: Rajiv Ranjan Sahay, Rajagopalan Ambasamudram Narayanan
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Publication number: 20110173490Abstract: 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: ApplicationFiled: January 8, 2010Publication date: July 14, 2011Applicant: Juniper Networks, Inc.Inventors: Krishna Narayanaswamy, Rajiv Ranjan
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Patent number: 7789918Abstract: 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: GrantFiled: August 9, 2004Date of Patent: September 7, 2010Assignee: Indian Oil Corporation LimitedInventors: Deepak Kumar Tuli, Ajay Kumar Arora, Shanti Prakash, Rajiv Ranjan, Krishan Kumar Swami, Ajay Kumar, Rakesh Sarin, Ram Prakash Verma, Niranjan Raghunath Raje
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Patent number: 7427303Abstract: 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: GrantFiled: August 27, 2002Date of Patent: September 23, 2008Assignee: Indian Oil Corporation LimitedInventors: Rakesh Sarin, Deepak Kumar Tuli, Shanti Parkash, Krishan Kumar Swami, Rajiv Ranjan, Ram Prakash Verma, Niranjan Raghunath Raje, Akhilesh Kumar Bhatnagar
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Publication number: 20080098642Abstract: 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: ApplicationFiled: August 9, 2004Publication date: May 1, 2008Inventors: Deepak Kumar Tuli, Ajay Kumar Arora, Shanti Prakash, Rajiv Ranjan, Krishan Kumar Swami, Ajay Kumar, Rakesh Sarin, Ram Prakash Verma, Niranjan Raghunath Raje
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Patent number: 7354630Abstract: 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: GrantFiled: November 6, 2003Date of Patent: April 8, 2008Assignee: Seagate Technology LLCInventors: Rajiv Ranjan, Thomas Patrick Nolan
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Patent number: 7354618Abstract: 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: GrantFiled: November 12, 2003Date of Patent: April 8, 2008Assignee: Seagate Technology LLCInventors: Chung-Hee Chang, Xiaoding Ma, Michael Joseph Stirniman, Jeffrey Shane Reiter, Samuel Dacke Harkness, IV, Rajiv Ranjan
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Publication number: 20060109591Abstract: 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: ApplicationFiled: November 19, 2004Publication date: May 25, 2006Inventors: Rajiv Ranjan, Shashi Agarwal, Ian Beresford, Koji Shima, Keith Goodson, Joel Weiss