Patents by Inventor Rajat Kumar

Rajat Kumar 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: 10001531
    Abstract: The present invention relates to a compound exhibiting Giant Magneto-Impedance (GMI) properties. The general chemical formula of the compound is (FeXCo100-X)100-(?+?+?)Cr?Si?B?, characterized in that ?<? and ?<?, wherein ? is preferably in the range of 2 to 4% by weight, ? is preferably in the range of 11.5% to 13% by weight, and ? is preferably in the range of 11% to 13% by weight, and X is preferably about 6% by weight. The chemical formula more preferably is (Fe6%Co94%)72.5%Cr2% Si12.5%B13%. The present invention also relates to a giant magneto-impedance (GMI) based sensing device for non-destructive contactless detection of carburization in austenitic stainless steel samples in field.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: June 19, 2018
    Assignees: Indian Oil Corporation Limited, COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Sova Bhattacharya, Qazi Mohammad Amir, Chandrasekaran Kannan, Brijesh Kumar, Biswapriya Das, Ashish Kumar Panda, Rajat Kumar Roy, Tarun Kumar Das, Swapan Kumar Das, Amitava Mitra
  • Publication number: 20180098710
    Abstract: A method and system for determining cognitive load of a person using a modified baseline is provided. The person is asked to perform a series of activities including staying in eye closed rest state and baseline state and performing a trial state. Simultaneously, EEG signal and GSR signal of the person are captured. The EEG signal and the GSR signal are preprocessed and segmented. The EEG and GSR signals are then used to determine a first set and a second set of inactive states from the baseline interval and the rest interval. The most inactive window is then identified out of the first set of inactive states. The most inactive window is determined from the rest interval of the person. The inactive window is used as the modified baseline to measure the cognitive load of the person.
    Type: Application
    Filed: October 6, 2017
    Publication date: April 12, 2018
    Applicant: Tata Consultancy Services Limited
    Inventors: Rahul Dasharath GAVAS, Rajat Kumar Das, Pratyusha Das, Debatri Chatterjee, Aniruddha Sinha
  • Publication number: 20180014768
    Abstract: The present disclosure envisages a computer implemented system and method to derive a relationship between Elementary Cognitive Tasks (ECTs) and the underlying cognitive skills of individuals through Electroencephalogram (EEG) analysis. The aim is to evaluate or improve the perceptual-cognitive traits of a subject that comprises disintegrating a given task into elementary task that are further mapped to identified cognitive categories of Bloom's Taxonomy, upon which a cluster analysis is performed. The separation index between the clusters thereafter establishes that individuals have different thinking process which is characteristics of that subject.
    Type: Application
    Filed: April 7, 2016
    Publication date: January 18, 2018
    Applicant: Tata Consultancy Services Limited
    Inventors: DEBATRI CHATTERJEE, ANIRUDDHA SINHA, RAJAT KUMAR DAS, SHREYASI DATTA
  • Patent number: 9715514
    Abstract: Technologies are generally provided for converting a k-ary tree to an equivalent height balanced binary tree. A k-ary tree root may be first set as the binary tree root. Nodes may then be inserted in the binary tree based on nodes of the k-ary tree. First two children of each k-ary tree node may be inserted as left and right children in the binary tree. If there are additional children, those may be inserted into a child queue. If there are less than two children in the k-ary tree, children from the child queue may be used to fill the left and right child nodes in the equivalent binary tree repeating the process level-wise until all nodes in the k-ary tree are processed.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: July 25, 2017
    Assignee: UNIVERSITY OF CALCUTTA
    Inventors: Rajat Kumar Pal, Angana Chakraborty, Novarun Deb
  • Patent number: 9668184
    Abstract: To help manage resources in a cellular wireless communication system, a base station may track air interface resource allocation for each UE the base station is serving with a call and may identify one or more of the UEs or calls as candidates for handover from the base station on grounds that air interface resource allocation to each of the identified one or more UEs is high. Upon receipt of a request from a UE to initiate a new call, the base station may then predict based at least on that UE's channel quality what the air interface resource allocation rate will be for the requested call. And if the predicted rate for the given UE is threshold low, the base station may select one of the candidate UEs and force a handover of the selected UE's call from the base station.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: May 30, 2017
    Assignee: Sprint Spectrum L.P.
    Inventors: Suryanarayanan Ramamurthy, Rajat Kumar, Talat Jamshidi, Jay D. Cole
  • Publication number: 20170131369
    Abstract: The present invention relates to a compound exhibiting Giant Magneto-Impedance (GMI) properties. The general chemical formula of the compound is (FeXCo100-X)100-(?+?+?)Cr?Si?B?, characterized in that ?<? and ?<?, wherein ? is preferably in the range of 2 to 4% by weight, ? is preferably in the range of 11.5% to 13% by weight, and ? is preferably in the range of 11% to 13% by weight, and X is preferably about 6% by weight. The chemical formula more preferably is (Fe6%Co94%)72.5%Cr2% Si12.5%B13%. The present invention also relates to a giant magneto-impedance (GMI) based sensing device for non-destructive contactless detection of carburization in austenitic stainless steel samples in field.
    Type: Application
    Filed: July 5, 2016
    Publication date: May 11, 2017
    Inventors: Sova BHATTACHARYA, Qazi Mohammad AMIR, Chandrasekaran KANNAN, Brijesh KUMAR, Biswapriya DAS, Ashish Kumar PANDA, Rajat Kumar ROY, Tarun Kumar DAS, Swapan Kumar DAS, Amitava MITRA
  • Publication number: 20170103668
    Abstract: A method and system is provided for assessing the learning experience of the person by monitoring the mental state of the person. The method involves measuring the brain signal, skin conductance using GSR device, and heart rate variability using the pulse oximeter. These physiological signals are measured when the person is performing an activity such as the modified Stroop test. Once the activity is performed, an offline questionnaire is also filled by the person. Based on the comparison of the offline questionnaire and the physiological signals, a model is generated. This model is used to assess the learning experience of the person. According to another embodiment, a method is also provided for maintaining the steady flow state of a person while performing any activity.
    Type: Application
    Filed: October 5, 2016
    Publication date: April 13, 2017
    Applicant: Tata Consultancy Services Limited
    Inventors: Debatri CHATTERJEE, Aniruddha SINHA, Rahul Dasharath GAVAS, Rajat Kumar DAS, ARIJIT SINHARAY
  • Patent number: 9591548
    Abstract: In accordance with the disclosed methods and systems, while providing a service that enables user equipment devices (UEs) being served by a first network to engage in signaling with a second network via the first network, a controller or other network entity may detect an error condition associated with the service, such as a threshold-high level of signaling or an interface failure. In response to detecting the error condition, base stations in the first network may then direct one or more UEs being served by the first network to refrain from using the given service. As a result, the one or more UEs may refrain from using the given service and may instead use another approach to engage in signaling with the second network, which may enable the one or more UEs to circumvent the error condition until it gets remedied.
    Type: Grant
    Filed: September 16, 2014
    Date of Patent: March 7, 2017
    Assignee: Sprint Spectrum L.P.
    Inventors: Talat Jamshidi, Wen Xue, Jay D. Cole, Rajat Kumar, Siddharth S. Oroskar, Nitesh Manchanda, Jasinder P. Singh
  • Patent number: 9544936
    Abstract: Systems, methods, and computer-readable media for managing bearers are provided. In a current telecommunications system, a maximum number of bearers are available to simultaneously support various services. By utilizing different internet protocol addresses from differing networks, the maximum number of bearers may be increased. Specifically, by registering a user device with both an IPv4 and IPv6 network, with different IP addresses associated with the respective bearers, a user device may access an additional number of bearers in excess of the previous maximum number of bearers available.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: January 10, 2017
    Assignee: Sprint Communications Company L.P.
    Inventors: Suryanarayanan Ramamurthy, Rajat Kumar, Talat Jamshidi
  • Patent number: 9445256
    Abstract: A first home packet gateway (PGW) device may receive a binding update message on behalf of a wireless communication device (WCD). The first home PGW device may be associated with a first pool of Internet Protocol (IP) addresses, and the WCD may be assigned a particular IP address. It may be determined that the first pool of IP addresses does not include the particular IP address, and that the particular IP address is included in a second pool of IP addresses that is associated with a second home PGW device. Possibly in response to determining that the particular IP address is included in the second pool of IP addresses that is associated with the second home PGW device, the first home PGW device may forward the binding update message to the second home PGW device.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: September 13, 2016
    Assignee: Sprint Spectrum L.P.
    Inventors: Jay D. Cole, Wen Xue, Talat Jamshidi, Rajat Kumar
  • Patent number: 9445323
    Abstract: A method is disclosed to help keep a UE's network identifier available for reassignment to that UE even after that UE engages in a particular type of handover. In accordance with the method, a network may make a determination that a UE should engage in a particular type of handover. In response to making this determination, the network may terminate the UE's active connection. However, based on the particular type of handover in which the network determined that the UE should engage, the network may also reserve the network identifier assigned for the UE's active connection.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: September 13, 2016
    Assignee: Sprint Spectrum L.P.
    Inventors: Suryanarayanan Ramamurthy, Rajat Kumar, Talat Jamshidi
  • Patent number: 9401834
    Abstract: A method and system for responding to a call-teardown request generated, for instance, as a result of a user equipment device (UE) losing coverage of a first serving radio access network (RAN) while the UE is engaged in a call with another party. A signaling intermediary receives the call-teardown message en route from a first call server to a second call server and responsively determines whether the UE is now served by a second RAN. Responsive to determining that the UE is served by the second RAN, the intermediary arranges for establishment of a new call connection with the UE via the second RAN and for linking of the new call connection with an existing leg of the call with the other party, and the intermediary discards the call-teardown message rather than forwarding it along to the second call server.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: July 26, 2016
    Assignee: Sprint Spectrum L.P.
    Inventors: Talat Jamshidi, Jay D. Cole, Suryanarayanan Ramamurthy, Rajat Kumar
  • Patent number: 9402218
    Abstract: Systems, methods, and computer-readable media for prioritizing a handover from an LTE network to a legacy network are provided. The method includes receiving, at a management component, a message from a mobile device. The message communicates a capability type associated with the mobile device. Based, in part, on this capability type, the management component assigns a priority to the mobile device. According to the assigned priority, the management component prioritizes the handover of the mobile device from the LTE network to the legacy network. This method reduces the latency for network handovers of mobile devices that are assigned a high priority.
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: July 26, 2016
    Assignee: Sprint Communications Company L.P.
    Inventors: Talat Jamshidi, Saravana Kumar Velusamy, Rajat Kumar, Suryanarayanan Ramamurthy
  • Patent number: 9390213
    Abstract: Techniques generally disclosed herein relate to computation of a guard zone of a three-dimensional object. In some examples, guard zones may be computed by identifying intersection lines that couple adjacent planes of an object, and categorizing an external angle at an intersection line between adjacent planes as concave or convex. In some embodiments, for convex angles, a cylindrical surface can be determined that is located about an outside surface of the object and centered along the intersection line between the adjacent planes. In some embodiments, for concave angles, the external angle can be bisected with a bisection plane. A guard zone may be formed by one or more of (i) providing a guard zone plane parallel to the object that is a tangent to a given cylindrical surface, (ii) providing a guard zone plane parallel to the object that intersects a given bisection plane, and/or (iii) coupling adjacent guard zone planes.
    Type: Grant
    Filed: January 8, 2014
    Date of Patent: July 12, 2016
    Assignee: University of Calcutta
    Inventors: Rajat Kumar Pal, Ranjan Mehera
  • Patent number: 9369336
    Abstract: Systems, methods, and computer-readable media for managing communication links are provided. A bridging interface that is automatically created between two or more packet gateways during a failed communications link is described. The bridging interface may be utilized during the communications link such that a user experience is not negatively impacted. Temporary ownership of internet protocol addresses may be transferred among packet gateways such that sessions are not terminated during the transfer.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: June 14, 2016
    Assignee: Sprint Communications Company L.P.
    Inventors: Talat Jamshidi, Rajat Kumar, Suryanarayanan Ramamurthy
  • Patent number: 9369592
    Abstract: Examples disclosed herein provide systems, methods, and software for responding to data balance queries for a wireless device. In one example, a method of operating a communication system includes initiating a data balance query for a wireless device and transferring the query to a packet data network gateway. In response to the query, the packet data network gateway and an online charging server are configured to transfer data usage information to a prepaid management system. In turn, the prepaid management module is configured to update the account for the wireless device based on the data usage information, and provide a data balance response to the wireless device.
    Type: Grant
    Filed: February 10, 2014
    Date of Patent: June 14, 2016
    Assignee: Sprint Communications Company L.P.
    Inventors: Saravana Velusamy, Suryanarayanan Ramamurthy, Rajat Kumar, Talat Jamshidi
  • Patent number: 9363138
    Abstract: Systems, methods, and computer-readable media for bridging communications are provided. Interfaces between multiple high speed gateways exist but are only capable of use during handovers between varying cell towers, are manually configured, and only communicate signaling information. A bridging interface that is automatically created between two or more high speed gateways during a failed communications link is described. The bridging interface is capable of communicating both signal and data information and is associated with a single cell tower. The bridging interface may be utilized during the communications link such that a user experience is not negatively impacted.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: June 7, 2016
    Assignee: Sprint Communications Company L.P.
    Inventors: Rajat Kumar, Talat Jamshidi, Suryanarayanan Ramamurthy
  • Patent number: 9350734
    Abstract: A gateway may respond to a data-connection request, relating to a request to establish a packet data connection for a requesting wireless communication device (WCD), based on a request rate determined from the number of other data-connection requests that the gateway has received during a particular period of time. If the request rate is below a first threshold, the gateway may initiate an authentication process to authenticate the requesting WCD and either accept or reject the data-connection request based on whether the authentication process is successful or unsuccessful. If the request rate is greater than the first threshold and less than a second threshold, the gateway may accept the data-connection request without initiating the authentication process. If the request rate is greater than the second threshold, the gateway may reject the data-connection request without initiating the authentication process.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: May 24, 2016
    Assignee: Sprint Spectrum L.P.
    Inventors: Talat Jamshidi, Suryan Ramamurthy, Rajat Kumar
  • Patent number: 9350604
    Abstract: A first service request, on behalf of a wireless communication device (WCD) may be received. The first WCD may be served by a first base station of a first wireless network provider, and may be subscribed to a second wireless network provider. A home packet gateway (PGW) device, with which to establish an inter-provider bearer path for the first WCD, may be identified. The inter-provider bearer path may include the first base station, a first serving gateway (SGW) device, and the home PGW device. The home PGW device may be operated by the second wireless network provider. In response to determining that the home PGW device is unresponsive, a backup PGW device may be identified. The backup PGW device may be operated by the first wireless network provider. The first SGW device may be instructed to establish intra-provider bearer paths that include the backup PGW device.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: May 24, 2016
    Assignee: Sprint Spectrum L.P.
    Inventors: Wen Xue, Talat Jamshidi, Rajat Kumar, Jay D. Cole
  • Patent number: 9325621
    Abstract: Examples disclosed herein provide systems, methods, and software for directing access nodes to offload users based on congestion. In one example, a method of operating a home access node includes determining that wireless usage in the home access node meets a congestion threshold. The method further includes, in response to meeting the congestion threshold, communicating an offload request to a roaming access node requesting that the roaming access node assist with serving a plurality of wireless devices. The method also includes receiving a response from the roaming access node indicating that the roaming access node can assist with serving the plurality of wireless devices, and directing at least a subset of the plurality of wireless devices to the roaming access node until an offload capacity specified by the roaming access node is reached.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: April 26, 2016
    Assignee: Sprint Communications Company L.P.
    Inventors: Suryanarayanan Ramamurthy, Talat Jamshidi, Rajat Kumar