Patents by Inventor Shekhar Kumar

Shekhar 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: 12582923
    Abstract: This disclosure relates to an annular centrifugal extractor with Solid Separation Part to Separate Solid Particles Present in Solvent Extraction Fluid. In order to remove solid particles from the solution, a solid separation part/rotating bowl is attached to rotating bowl in such a way that solid particles settle inside the solid separation part. This solid separating centrifugal extractor contains two parts: (I) upper part which acts as a liquid-liquid separator to separate aqueous and organic solution used in solvent extraction operation and (II) bottom part which acts as a solid separator to separate solid particle present in solvent extraction liquids. The bottom rotating rotor is coupled with upper rotating rotor by threading arrangement. Both the rotating rotors are confined within a stationary cylinder. Dispersion with solid particles entering inside the rotating bowl is deflected towards the wall of the rotating cylinder by deflecting baffle by centrifugal sedimentation.
    Type: Grant
    Filed: December 20, 2021
    Date of Patent: March 24, 2026
    Assignee: Secretary, Department of Atomic Energy
    Inventors: M. Balamurugan, N. K. Pandey, Shekhar Kumar, J. B. Joshi
  • Patent number: 12499459
    Abstract: Methods and apparatuses for customer engagement include: receiving a first product search query from a visitor identified in a visitor session, wherein the first product search query includes at least a visitor identifier associated with customer segments; returning first product search results based on the first product search query; updating, after the first product search query, the customer segments associated with the visitor identifier based on real time evaluation of visitor characteristics and/or actions; receiving a second product search query that is the same as the first product search query from the visitor, wherein the second product search query includes at least the visitor identifier associated with the updated customer segments; and returning second product search results based on the second product search query that is different from the first product search results.
    Type: Grant
    Filed: January 24, 2023
    Date of Patent: December 16, 2025
    Assignee: BloomReach, Inc.
    Inventors: Frank Passantino, Paul Edwards, Ate Douma, Shekhar Kumar
  • Publication number: 20240249303
    Abstract: Methods and apparatuses for customer engagement include: receiving a first product search query from a visitor identified in a visitor session, wherein the first product search query includes at least a visitor identifier associated with customer segments; returning first product search results based on the first product search query; updating, after the first product search query, the customer segments associated with the visitor identifier based on real time evaluation of visitor characteristics and/or actions; receiving a second product search query that is the same as the first product search query from the visitor, wherein the second product search query includes at least the visitor identifier associated with the updated customer segments; and returning second product search results based on the second product search query that is different from the first product search results.
    Type: Application
    Filed: January 24, 2023
    Publication date: July 25, 2024
    Inventors: Frank PASSANTINO, Paul EDWARDS, Ate DOUMA, Shekhar KUMAR
  • Publication number: 20240238697
    Abstract: This disclosure relates to an annular centrifugal extractor with Solid Separation Part to Separate Solid Particles Present in Solvent Extraction Fluid. In order to remove solid particles from the solution, a solid separation part/rotating bowl is attached to rotating bowl in such a way that solid particles settle inside the solid separation part. This solid separating centrifugal extractor contains two parts: (I) upper part which acts as a liquid-liquid separator to separate aqueous and organic solution used in solvent extraction operation and (II) bottom part which acts as a solid separator to separate solid particle present in solvent extraction liquids. The bottom rotating rotor is coupled with upper rotating rotor by threading arrangement. Both the rotating rotors are confined within a stationary cylinder. Dispersion with solid particles entering inside the rotating bowl is deflected towards the wall of the rotating cylinder by deflecting baffle by centrifugal sedimentation.
    Type: Application
    Filed: December 20, 2021
    Publication date: July 18, 2024
    Inventors: M. Balamurugan, N. K. Pandey, Shekhar Kumar, J. B. Joshi
  • Patent number: 10735208
    Abstract: It is provided a method, including checking if an indication is received that a certificate installed in a communication entity is to be revoked at a revocation time in the future; preparing, if the indication is received, a first revocation list, wherein the first revocation list includes an identifier of the certificate and the revocation time; providing the first revocation list to the communication entity.
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: August 4, 2020
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Shekhar Kumar, Juergen Opschroef, Martin Karl Peylo, Giangiacomo Guglielmini, Michal Szymanski
  • Publication number: 20180351751
    Abstract: It is provided a method, including checking if an indication is received that a certificate installed in a communication entity is to be revoked at a revocation time in the future; preparing, if the indication is received, a first revocation list, wherein the first revocation list includes an identifier of the certificate and the revocation time; providing the first revocation list to the communication entity.
    Type: Application
    Filed: March 2, 2015
    Publication date: December 6, 2018
    Inventors: Shekhar KUMAR, Juergen OPSCHROEF, Martin Karl PEYLO, Giangiacomo GUGLIELMINI, Michal SZYMANSKI
  • Publication number: 20170250827
    Abstract: There are provided measures for trust anchor update in a public key infrastructure. Such measures exemplarily comprise, for managing, in a network utilizing authentication based on certificates for secure connections between end entities, an update from an old trusted anchor certificate to a new trusted anchor certificate, wherein each of said trusted anchor certificates is a root point of a chain of certificates, providing, for a pre-migration period, said old trusted anchor certificate as valid, providing, for a migration period, said old trusted anchor certificate and said new trusted anchor certificate, coincidentally, as valid, and providing, for a post-migration period, said new trusted anchor certificate as valid.
    Type: Application
    Filed: August 22, 2014
    Publication date: August 31, 2017
    Applicant: Nokia Solutions and Networks OY
    Inventors: Juergen OPSCHROEF, Shekhar KUMAR, Martin Karl PEYLO, Michal SZYMANSKI, Giangiacomo GUGLIELMINI, Hua LI
  • Patent number: 9695408
    Abstract: The present invention relates to novel mutants of Streptokinase, its functional fragments and covalently modified forms. Methods are provided for the preparation of the bacterial plasminogen activator protein, Streptokinase its muteins, species variants and their covalently modified variants that are characterized by improved therapeutic properties, such as increased proteolytic stability, extended plasma half-lives, reduced immuno-reactivity and enhanced fibrin clot specificity. The method involves either incorporating additional cysteine residues, or substituting cysteine residues for naturally occurring amino acids into non-essential regions of the protein such that the catalytic activity of the resultant protein remains largely unaltered. These cysteine variants were further modified by covalently attaching a cysteine reactive polymer such as polyethylene glycol (PEG) or sulfhydryl-reactive moieties from a group that includes fluorophore, spin labels or other small conjugates.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: July 4, 2017
    Assignee: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Shekhar Kumar, Neeraj Maheshwari, Girish Sahni
  • Publication number: 20150344861
    Abstract: The present invention relates to novel mutants of Streptokinase, its functional fragments and covalently modified forms. Methods are provided for the preparation of the bacterial plasminogen activator protein, Streptokinase its muteins, species variants and their covalently modified variants that are characterized by improved therapeutic properties, such as increased proteolytic stability, extended plasma half-lives, reduced immuno-reactivity and enhanced fibrin clot specificity. The method involves either incorporating additional cysteine residues, or substituting cysteine residues for naturally occurring amino acids into non-essential regions of the protein such that the catalytic activity of the resultant protein remains largely unaltered. These cysteine variants were further modified by covalently attaching a cysteine reactive polymer such as polyethylene glycol (PEG) or sulfhydryl-reactive moieties from a group that includes fluorophore, spin labels or other small conjugates.
    Type: Application
    Filed: August 19, 2015
    Publication date: December 3, 2015
    Applicant: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Shekhar KUMAR, Neeraj MAHESHWARI, Girish SAHNI
  • Patent number: 9115210
    Abstract: The present invention relates to novel mutants of Streptokinase, its functional fragments and covalently modified forms. Methods are provided for the preparation of the bacterial plasminogen activator protein, Streptokinase its muteins, species variants and their covalently modified variants that are characterized by improved therapeutic properties, such as increased proteolytic stability, extended plasma half-lives, reduced immuno-reactivity and enhanced fibrin clot specificity. The method involves either incorporating additional cysteine residues, or substituting cysteine residues for naturally occurring amino acids into non-essential regions of the protein such that the catalytic activity of the resultant protein remains largely unaltered. These cysteine variants were further modified by covalently attaching a cysteine reactive polymer such as polyethylene glycol (PEG) or sulfhydryl-reactive moieties from a group that includes fluorophore, spin labels or other small conjugates.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: August 25, 2015
    Assignee: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Shekhar Kumar, Neeraj Maheshwari, Girish Sahni
  • Publication number: 20120213763
    Abstract: The present invention relates to novel mutants of Streptokinase, its functional fragments and covalently modified forms. Methods are provided for the preparation of the bacterial plasminogen activator protein, Streptokinase its muteins, species variants and their covalently modified variants that are characterized by improved therapeutic properties, such as increased proteolytic stability, extended plasma half-lives, reduced immuno-reactivity and enhanced fibrin clot specificity. The method involves either incorporating additional cysteine residues, or substituting cysteine residues for naturally occurring amino acids into non-essential regions of the protein such that the catalytic activity of the resultant protein remains largely unaltered. These cysteine variants were further modified by covalently attaching a cysteine reactive polymer such as polyethylene glycol (PEG) or sulfhydryl-reactive moieties from a group that includes fluorophore, spin labels or other small conjugates.
    Type: Application
    Filed: December 6, 2011
    Publication date: August 23, 2012
    Applicant: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Shekhar KUMAR, Neeraj MAHESHWARI, Girish SAHNI
  • Patent number: 8093032
    Abstract: The present invention relates to novel mutants of Streptokinase, its functional fragments and covalently modified forms. Methods are provided for the preparation of the bacterial plasminogen activator protein, Streptokinase its muteins, species variants and their covalently modified variants that are characterized by improved therapeutic properties, such as increased proteolytic stability, extended plasma half-lives, reduced immuno-reactivity and enhanced fibrin clot specificity. The method involves either incorporating additional cysteine residues, or substituting cysteine residues for naturally occurring amino acids into non-essential regions of the protein such that the catalytic activity of the resultant protein remains largely unaltered. These cysteine variants were further modified by covalently attaching a cysteine reactive polymer such as polyethylene glycol (PEG) or sulfhydryl-reactive moieties from a group that includes fluorophore, spin labels or other small conjugates.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: January 10, 2012
    Assignee: Council of Scientific and Industrial Research
    Inventors: Shekhar Kumar, Neeraj Maheshwari, Girish Sahni
  • Publication number: 20100034804
    Abstract: The present invention relates to novel mutants of Streptokinase, its functional fragments and covalently modified forms. Methods are provided for the preparation of the bacterial plasminogen activator protein, Streptokinase its muteins, species variants and their covalently modified variants that are characterized by improved therapeutic properties, such as increased proteolytic stability, extended plasma half-lives, reduced immuno-reactivity and enhanced fibrin clot specificity. The method involves either incorporating additional cysteine residues, or substituting cysteine residues for naturally occurring amino acids into non-essential regions of the protein such that the catalytic activity of the resultant protein remains largely unaltered. These cysteine variants were further modified by covalently attaching a cysteine reactive polymer such as polyethylene glycol (PEG) or sulfhydryl-reactive moieties from a group that includes fluorophore, spin labels or other small conjugates.
    Type: Application
    Filed: March 31, 2009
    Publication date: February 11, 2010
    Inventors: Shekhar Kumar, Neeraj Maheshwari, Girish Sahni