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).
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Patent number: 12582923Abstract: 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: GrantFiled: December 20, 2021Date of Patent: March 24, 2026Assignee: Secretary, Department of Atomic EnergyInventors: M. Balamurugan, N. K. Pandey, Shekhar Kumar, J. B. Joshi
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Patent number: 12499459Abstract: 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: GrantFiled: January 24, 2023Date of Patent: December 16, 2025Assignee: BloomReach, Inc.Inventors: Frank Passantino, Paul Edwards, Ate Douma, Shekhar Kumar
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Publication number: 20240249303Abstract: 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: ApplicationFiled: January 24, 2023Publication date: July 25, 2024Inventors: Frank PASSANTINO, Paul EDWARDS, Ate DOUMA, Shekhar KUMAR
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Publication number: 20240238697Abstract: 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: ApplicationFiled: December 20, 2021Publication date: July 18, 2024Inventors: M. Balamurugan, N. K. Pandey, Shekhar Kumar, J. B. Joshi
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Patent number: 10735208Abstract: 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: GrantFiled: March 2, 2015Date of Patent: August 4, 2020Assignee: Nokia Solutions and Networks OyInventors: Shekhar Kumar, Juergen Opschroef, Martin Karl Peylo, Giangiacomo Guglielmini, Michal Szymanski
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Publication number: 20180351751Abstract: 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: ApplicationFiled: March 2, 2015Publication date: December 6, 2018Inventors: Shekhar KUMAR, Juergen OPSCHROEF, Martin Karl PEYLO, Giangiacomo GUGLIELMINI, Michal SZYMANSKI
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Publication number: 20170250827Abstract: 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: ApplicationFiled: August 22, 2014Publication date: August 31, 2017Applicant: Nokia Solutions and Networks OYInventors: Juergen OPSCHROEF, Shekhar KUMAR, Martin Karl PEYLO, Michal SZYMANSKI, Giangiacomo GUGLIELMINI, Hua LI
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Patent number: 9695408Abstract: 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: GrantFiled: August 19, 2015Date of Patent: July 4, 2017Assignee: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCHInventors: Shekhar Kumar, Neeraj Maheshwari, Girish Sahni
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Publication number: 20150344861Abstract: 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: ApplicationFiled: August 19, 2015Publication date: December 3, 2015Applicant: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCHInventors: Shekhar KUMAR, Neeraj MAHESHWARI, Girish SAHNI
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Patent number: 9115210Abstract: 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: GrantFiled: December 6, 2011Date of Patent: August 25, 2015Assignee: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCHInventors: Shekhar Kumar, Neeraj Maheshwari, Girish Sahni
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Publication number: 20120213763Abstract: 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: ApplicationFiled: December 6, 2011Publication date: August 23, 2012Applicant: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCHInventors: Shekhar KUMAR, Neeraj MAHESHWARI, Girish SAHNI
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Patent number: 8093032Abstract: 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: GrantFiled: March 31, 2009Date of Patent: January 10, 2012Assignee: Council of Scientific and Industrial ResearchInventors: Shekhar Kumar, Neeraj Maheshwari, Girish Sahni
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Publication number: 20100034804Abstract: 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: ApplicationFiled: March 31, 2009Publication date: February 11, 2010Inventors: Shekhar Kumar, Neeraj Maheshwari, Girish Sahni