Patents by Inventor Nisha BAYAL

Nisha BAYAL 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).

  • Synthesis of fibrous nano-silica spheres with controlled particle size, fibre density, and various textural properties
    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
  • SYNTHESIS OF FIBROUS NANO-SILICA SPHERES WITH CONTROLLED PARTICLE SIZE, FIBRE DENSITY, AND VARIOUS TEXTURAL PROPERTIES
    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