Patents by Inventor Chandrakant C. Patel

Chandrakant C. Patel 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).

  • Publication number: 20220352598
    Abstract: Nanoporous composite separators are disclosed for use in batteries and capacitors comprising a nanoporous inorganic material and an organic polymer material. The inorganic material may comprise Al2O3, AlO(OH) or boehmite, AlN, BN, SiN, ZnO, ZrO2, SiO2, or combinations thereof. The nanoporous composite separator may have a porosity of between 35-50%. The average pore size of the nanoporous composite separator may be between 10-90 nm. The separator may be formed by coating a substrate with a dispersion including the inorganic material, organic material, and a solvent. Once dried, the coating may be removed from the substrate, thus forming the nanoporous composite separator. A nanoporous composite separator may provide increased thermal conductivity and dimensional stability at temperatures above 200° C. compared to polyolefin separators.
    Type: Application
    Filed: July 11, 2022
    Publication date: November 3, 2022
    Applicant: Meta Materials Inc.
    Inventors: David W. Avison, Shreyans Shingi, Chandrakant C. Patel, Charles R. Comeau, JR., Samuel Lim
  • Patent number: 11387521
    Abstract: Nanoporous composite separators are disclosed for use in batteries and capacitors comprising a nanoporous inorganic material and an organic polymer material. The inorganic material may comprise Al2O3, AlO(OH) or boehmite, AlN, BN, SiN, ZnO, ZrO2, SiO2, or combinations thereof. The nanoporous composite separator may have a porosity of between 35-50%. The average pore size of the nanoporous composite separator may be between 10-90 nm. The separator may be formed by coating a substrate with a dispersion including the inorganic material, organic material, and a solvent. Once dried, the coating may be removed from the substrate, thus forming the nanoporous composite separator. A nanoporous composite separator may provide increased thermal conductivity and dimensional stability at temperatures above 200° C. compared to polyolefin separators.
    Type: Grant
    Filed: December 28, 2021
    Date of Patent: July 12, 2022
    Assignee: Optodot Corporation
    Inventors: David W. Avison, Shreyans Shingi, Chandrakant C. Patel, Charles R. Comeau, Jr., Samuel Lim
  • Publication number: 20220123434
    Abstract: Nanoporous composite separators are disclosed for use in batteries and capacitors comprising a nanoporous inorganic material and an organic polymer material. The inorganic material may comprise Al2O3, AlO(OH) or boehmite, AlN, BN, SiN, ZnO, ZrO2, SiO2, or combinations thereof. The nanoporous composite separator may have a porosity of between 35-50%. The average pore size of the nanoporous composite separator may be between 10-90 nm. The separator may be formed by coating a substrate with a dispersion including the inorganic material, organic material, and a solvent. Once dried, the coating may be removed from the substrate, thus forming the nanoporous composite separator. A nanoporous composite separator may provide increased thermal conductivity and dimensional stability at temperatures above 200° C. compared to polyolefin separators.
    Type: Application
    Filed: December 28, 2021
    Publication date: April 21, 2022
    Inventors: David W. Avison, Shreyans Shingi, Chandrakant C. Patel, Charles R. Comeau, JR., Samuel Lim
  • Patent number: 11217859
    Abstract: Nanoporous composite separators are disclosed for use in batteries and capacitors comprising a nanoporous inorganic material and an organic polymer material. The inorganic material may comprise Al2O3, AlO(OH) or boehmite, AlN, BN, SiN, ZnO, ZrO2, SiO2, or combinations thereof. The nanoporous composite separator may have a porosity of between 35-50%. The average pore size of the nanoporous composite separator may be between 10-90 nm. The separator may be formed by coating a substrate with a dispersion including the inorganic material, organic material, and a solvent. Once dried, the coating may be removed from the substrate, thus forming the nanoporous composite separator. A nanoporous composite separator may provide increased thermal conductivity and dimensional stability at temperatures above 200° C. compared to polyolefin separators.
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: January 4, 2022
    Assignee: OPTODOT CORPORATION
    Inventors: David W. Avison, Shreyans Shingi, Chandrakant C. Patel, Charles R. Comeau, Jr., Samuel Lim
  • Patent number: 10879513
    Abstract: Nanoporous composite separators are disclosed for use in batteries and capacitors comprising a nanoporous inorganic material and an organic polymer material. The inorganic material may comprise Al2O3, AlO(OH) or boehmite, AlN, BN, SiN, ZnO, ZrO2, SiO2, or combinations thereof. The nanoporous composite separator may have a porosity of between 35-50%. The average pore size of the nanoporous composite separator may be between 10-90 nm. The separator may be formed by coating a substrate with a dispersion including the inorganic material, organic material, and a solvent. Once dried, the coating may be removed from the substrate, thus forming the nanoporous composite separator. A nanoporous composite separator may provide increased thermal conductivity and dimensional stability at temperatures above 200° C. compared to polyolefin separators.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: December 29, 2020
    Assignee: Optodot Corporation
    Inventors: David W. Avison, Shreyans Shingi, Chandrakant C. Patel, Charles R. Comeau, Jr., Samuel Lim
  • Publication number: 20200343507
    Abstract: Nanoporous composite separators are disclosed for use in batteries and capacitors comprising a nanoporous inorganic material and an organic polymer material. The inorganic material may comprise Al2O3, AlO(OH) or boehmite, AlN, BN, SiN, ZnO, ZrO2, SiO2, or combinations thereof. The nanoporous composite separator may have a porosity of between 35-50%. The average pore size of the nanoporous composite separator may be between 10-90 nm. The separator may be formed by coating a substrate with a dispersion including the inorganic material, organic material, and a solvent. Once dried, the coating may be removed from the substrate, thus forming the nanoporous composite separator. A nanoporous composite separator may provide increased thermal conductivity and dimensional stability at temperatures above 200° C. compared to polyolefin separators.
    Type: Application
    Filed: July 13, 2020
    Publication date: October 29, 2020
    Inventors: David W. Avison, Shreyans Shingi, Chandrakant C. Patel, Charles R. Comeau, JR., Samuel Lim
  • Publication number: 20160104876
    Abstract: Nanoporous composite separators are disclosed for use in batteries and capacitors comprising a nanoporous inorganic material and an organic polymer material. The inorganic material may comprise Al2O3, AlO(OH) or boehmite, AlN, BN, SiN, ZnO, ZrO2, SiO2, or combinations thereof. The nanoporous composite separator may have a porosity of between 35-50%. The average pore size of the nanoporous composite separator may be between 10-90 nm. The separator may be formed by coating a substrate with a dispersion including the inorganic material, organic material, and a solvent. Once dried, the coating may be removed from the substrate, thus forming the nanoporous composite separator. A nanoporous composite separator may provide increased thermal conductivity and dimensional stability at temperatures above 200° C. compared to polyolefin separators.
    Type: Application
    Filed: April 29, 2014
    Publication date: April 14, 2016
    Applicant: OPTODOT CORPORATION
    Inventors: David W. Avison, Shreyans Shingi, Chandrakant C. Patel, Charles R. Comeau, JR., Samuel Lim
  • Patent number: 6294251
    Abstract: A colored film is formed of a transparent film and at least one colored adhesive layer colored with at least one coloring agent and provided on at least one side of the transparent film. The colored adhesive layer comprises a polyester resin as an adhesive, and the coloring agent comprises a pigment and a polyester-base dispersant.
    Type: Grant
    Filed: December 31, 1998
    Date of Patent: September 25, 2001
    Assignee: Lintec Corporation
    Inventors: Toshio Minagawa, Kohei Tachikawa, Leonardo M. Garcia, Chandrakant C. Patel
  • Patent number: 5683805
    Abstract: Described is a colored film formed of a transparent film and at least one colored adhesive layer arranged on one side of the transparent film. The adhesive layer has been colored by a colorant composed of a pigment and a dispersant. The dispersant comprises a (meth)acrylate ester polymer formed, as essential monomer components, of an aromatic vinyl monomer, a primary to tertiary amino-containing (meth)acrylate ester monomer and a (meth)acrylate ester monomer containing an ammonium group quaternized with an aromatic compound.
    Type: Grant
    Filed: March 15, 1996
    Date of Patent: November 4, 1997
    Assignee: Lintec Corporation
    Inventors: Katsuyuki Oita, Kohei Tachikawa, Leonardo M. Garcia, Chandrakant C. Patel, Toshio Minagawa