Patents by Inventor Sagar Mitra

Sagar Mitra 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: 11247230
    Abstract: An object has a durable superhydrophic, self-cleaning, and icephobic coating includes a substrate and a layer disposed on the substrate, the layer resulting from coating with a formulation having an effective amount of hierarchical structuring micro/nanoparticles, liquid silane having one or more groups configured to graft to a hierarchical structuring micro/nanoparticle and at least another group that results in hydrophobicity. The hierarchical structuring micro/nanoparticles are dispersed in the liquid silane. Another effective amount of synthetic adhesive, selected from thermosetting binders, moisture curing adhesives or polymers that form a strong interaction with a surface, is in solution with a solvent. Upon curing, the layer has a contact angle greater than 90° and a sliding angle of less than 10° and, less than 5% of an area of the layer is removed in a Tape test.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: February 15, 2022
    Assignee: THE UNIVERSITY OF MASSACHUSETTS
    Inventors: Jason Constantinou, Hanna Dodiuk-Kenig, Carol M. F. Barry, Samuel Kenig, Joey L. Mead, Artee Panwar, Tehila Nahum, Sagar Mitra
  • Publication number: 20200086342
    Abstract: An object has a durable superhydrophic, self-cleaning, and icephobic coating includes a substrate and a layer disposed on the substrate, the layer resulting from coating with a formulation having an effective amount of hierarchical structuring micro/nanoparticles, liquid silane having one or more groups configured to graft to a hierarchical structuring micro/nanoparticle and at least another group that results in hydrophobicity. The hierarchical structuring micro/nanoparticles are dispersed in the liquid silane. Another effective amount of synthetic adhesive, selected from thermosetting binders, moisture curing adhesives or polymers that form a strong interaction with a surface, is in solution with a solvent. Upon curing, the layer has a contact angle greater than 90° and a sliding angle of less than 10° and, less than 5% of an area of the layer is removed in a Tape test.
    Type: Application
    Filed: November 25, 2019
    Publication date: March 19, 2020
    Applicant: The University of Massachusetts
    Inventors: Jason Constantinou, Hanna Dodiuk-Kenig, Carol M.F. Barry, Samuel Kenig, Joey L. Mead, Artee Panwar, Tehila Nahum, Sagar Mitra
  • Patent number: 10493488
    Abstract: An object has a durable superhydrophic, self-cleaning, and icephobic coating includes a substrate and a layer disposed on the substrate, the layer resulting from coating with a formulation having an effective amount of hierarchical structuring micro/nanoparticles, liquid silane having one or more groups configured to graft to a hierarchical structuring micro/nanoparticle and at least another group that results in hydrophobicity. The hierarchical structuring micro/nanoparticles are dispersed in the liquid silane. Another effective amount of synthetic adhesive, selected from thermosetting binders, moisture curing adhesives or polymers that form a strong interaction with a surface, is in solution with a solvent. Upon curing, the layer has a contact angle greater than 90° and a sliding angle of less than 10° and, less than 5% of an area of the layer is removed in a Tape test.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: December 3, 2019
    Assignee: The University of Masachusetts
    Inventors: Jason Constantinou, Hanna Dodiuk-Kenig, Carol M. F. Barry, Samuel Kenig, Joey L. Mead, Artee Panwar, Tehila Nahum, Sagar Mitra
  • Patent number: 9938153
    Abstract: Embodiments herein provide a method of preparing Silicon (Si) from sand (SiO2).The method includes preparing sand particles with a size less than 50 microns. Further, the method includes obtaining Magnesium (Mg) particles with a size in range of 105-150 microns. Further, the method includes mixing sand and Mg particles in a predefined ratio to obtain a Sand-Magnesium (SM) mixture. Further, the method includes subjecting the SM mixture to heating at a temperature for a predefined time to obtain Si sample. Further, the method includes identifying un-reacted portion of Mg and sand particles. Furthermore, the method includes purifying byproducts of magnesium as well as un-reacted-magnesium and silica to obtain pure Si.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: April 10, 2018
    Assignee: INDIAN INSTITUTE OF TECHNOLOGY BOMBAY
    Inventors: Mohammad Furquan, Savithri Vijayalakshmi, Sagar Mitra
  • Publication number: 20170291821
    Abstract: Embodiments herein provide a method of preparing Silicon (Si) from sand (SiO2).The method includes preparing sand particles with a size less than 50 microns. Further, the method includes obtaining Magnesium (Mg) particles with a size in range of 105-150 microns. Further, the method includes mixing sand and Mg particles in a predefined ratio to obtain a Sand-Magnesium (SM) mixture. Further, the method includes subjecting the SM mixture to heating at a temperature for a predefined time to obtain Si sample. Further, the method includes identifying un-reacted portion of Mg and sand particles. Furthermore, the method includes purifying byproducts of magnesium as well as un-reacted-magnesium and silica to obtain pure Si.
    Type: Application
    Filed: June 2, 2016
    Publication date: October 12, 2017
    Inventors: Mohammad Furquan, Savithri Vijayalakshmi, Sagar Mitra
  • Publication number: 20170036241
    Abstract: An object has a durable superhydrophic, self-cleaning, and icephobic coating includes a substrate and a layer disposed on the substrate, the layer resulting from coating with a formulation having an effective amount of hierarchical structuring micro/nanoparticles, liquid silane having one or more groups configured to graft to a hierarchical structuring micro/nanoparticle and at least another group that results in hydrophobicity. The hierarchical structuring micro/nanoparticles are dispersed in the liquid silane. Another effective amount of synthetic adhesive, selected from thermosetting binders, moisture curing adhesives or polymers that form a strong interaction with a surface, is in solution with a solvent. Upon curing, the layer has a contact angle greater than 90° and a sliding angle of less than 10° and, less than 5% of an area of the layer is removed in a Tape test.
    Type: Application
    Filed: April 17, 2015
    Publication date: February 9, 2017
    Inventors: Jason Constantinou, Hanna Dodiuk-Kenig, Carol M. F. Barry, Samuel Kenig, Joey L. Mead, Artee Panwar, Tehila Nahum, Sagar Mitra