Patents by Inventor Vivek Polshettiwar

Vivek Polshettiwar 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: 11242257
    Abstract: The present disclosure provides a method for synthesizing fibrous silica nanospheres, the method can include, in sequence, the steps of: a) providing a reaction mixture comprising a silica precursor, a hydrolyzing agent, a template molecule, a cosurfactant and one or more solvents; b) maintaining the reaction mixture under stirring for a length of time; c) heating the reaction mixture to a temperature for a length of time; d) cooling the reaction mixture to obtain a solid, and (e) calcinating the solid to pro duce fibrous silica nanospheres, wherein desirable product characteristics such as particle size, fiber density, surface area, pore volume and pore size can be obtained by controlling one or more parameters of the method. The present disclosure further provides a method for synthesizing fibrous silica nanospheres using conventional heating such as refluxing the reactants in an open reactor, thereby eliminating the need for microwave heating in a closed reactor or the need for any pressure reactors.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: February 8, 2022
    Assignee: TATA INSTITUTE OF FUNDAMENTAL RESEARCH
    Inventors: Vivek Polshettiwar, Nisha Bayal, Baljeet Singh, Rustam Singh, Ayan Maity
  • Publication number: 20190002297
    Abstract: The present disclosure provides a method for synthesizing fibrous silica nanospheres, the method can include, in sequence, the steps of: a) providing a reaction mixture comprising a silica precursor, a hydrolyzing agent, a template molecule, a cosurfactant and one or more solvents; b) maintaining the reaction mixture under stirring for a length of time; c) heating the reaction mixture to a temperature for a length of time; d) cooling the reaction mixture to obtain a solid, and (e) calcinating the solid to pro duce fibrous silica nanospheres, wherein desirable product characteristics such as particle size, fiber density, surface area, pore volume and pore size can be obtained by controlling one or more parameters of the method. The present disclosure further provides a method for synthesizing fibrous silica nanospheres using conventional heating such as refluxing the reactants in an open reactor, thereby eliminating the need for microwave heating in a closed reactor or the need for any pressure reactors.
    Type: Application
    Filed: April 1, 2016
    Publication date: January 3, 2019
    Inventors: Vivek POLSHETTIWAR, Nisha BAYAL, Baljeet SINGH, Rustam SINGH, Ayan Maity
  • Patent number: 9937459
    Abstract: In accordance with the purpose(s) of the present disclosure, as embodied and broadly described herein, embodiments of the present disclosure, in one aspect, relate to materials that can be used for gas (e.g., CO2) capture, methods of making materials, methods of capturing gas (e.g., CO2), and the like.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: April 10, 2018
    Assignee: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Vivek Polshettiwar, Umesh Patil
  • Publication number: 20160129386
    Abstract: In accordance with the purpose(s) of the present disclosure, as embodied and broadly described herein, embodiments of the present disclosure, in one aspect, relate to materials that can be used for gas (e.g., CO2) capture, methods of making materials, methods of capturing gas (e.g., CO2), and the like.
    Type: Application
    Filed: January 15, 2016
    Publication date: May 12, 2016
    Inventors: Vivek Polshettiwar, Umesh Patil
  • Patent number: 9272262
    Abstract: In accordance with the purpose(s) of the present disclosure, as embodied and broadly described herein, embodiments of the present disclosure, in one aspect, relate to materials that can be used for gas (e.g., CO2) capture, methods of making materials, methods of capturing gas (e.g., CO2), and the like.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: March 1, 2016
    Assignee: King Abdullah University of Science and Technology (KAUST)
    Inventors: Vivek Polshettiwar, Umesh Patil
  • Patent number: 8883308
    Abstract: Disclosed are high surface area nanoparticles that have a fibrous morphology. The nanoparticles have a plurality of fibers, wherein each fiber is in contact with one other fiber and each fiber has a length of between about 1 nm and about 5000 nm. Also disclosed are applications of the nanoparticles of the present invention, and methods of fabrication of the nanoparticles of the present invention.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: November 11, 2014
    Assignee: King Abdullah University of Science and Technology
    Inventors: Vivek Polshettiwar, Jean-Marie Basset
  • Patent number: 8324125
    Abstract: This invention relates to the use of nano-organocatalysts, and, more specifically, to the use of magnetic nanomaterial-supported organocatalysts. It is an object of the present invention to provide “green” catalysts and protocols. According to one embodiment of the invention, a nano-organocatalyst in the form of a magnetic nanomaterial-supported organocatalyst is provided. According to other embodiments of the invention, glutathione and cysteine are provided as organocatalysts and magnetic nanomaterial-supported glutathione and magnetic nanomaterial-supported cysteine are provided for use as nano-organocatalysts. According to another embodiment of the invention, a method of using a recyclable magnetic nanomaterial-supported organocatalyst using a totally benign aqueous protocol, without using any organic solvent in the reaction or during the workup, is provided.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: December 4, 2012
    Assignee: The United States of America as represented by the Administrator of the U.S. Environmental Protection Agency
    Inventors: Rajender S. Varma, Vivek Polshettiwar
  • Publication number: 20110253643
    Abstract: Disclosed are high surface area nanoparticles that have a fibrous morphology. The nanoparticles have a plurality of fibers, wherein each fiber is in contact with one other fiber and each fiber has a length of between about 1 nm and about 5000 nm. Also disclosed are applications of the nanoparticles of the present invention, and methods of fabrication of the nanoparticles of the present invention.
    Type: Application
    Filed: March 2, 2011
    Publication date: October 20, 2011
    Inventors: Vivek Polshettiwar, Jean-Marie Basset
  • Publication number: 20110054180
    Abstract: This invention relates to the use of nano-organocatalysts, and, more specifically, to the use of magnetic nanomaterial-supported organocatalysts. It is an object of the present invention to provide “green” catalysts and protocols. According to one embodiment of the invention, a nano-organocatalyst in the form of a magnetic nanomaterial-supported organocatalyst is provided. According to other embodiments of the invention, glutathione and cysteine are provided as organocatalysts and magnetic nanomaterial-supported glutathione and magnetic nanomaterial-supported cysteine are provided for use as nano-organocatalysts. According to another embodiment of the invention, a method of using a recyclable magnetic nanomaterial-supported organocatalyst using a totally benign aqueous protocol, without using any organic solvent in the reaction or during the workup, is provided.
    Type: Application
    Filed: September 3, 2009
    Publication date: March 3, 2011
    Applicant: USA as Represented by the Administrator of U.S. Environmental Protection Agency
    Inventors: Rajender S. Varma, Vivek Polshettiwar