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).
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Publication number: 20220352598Abstract: 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: ApplicationFiled: July 11, 2022Publication date: November 3, 2022Applicant: Meta Materials Inc.Inventors: David W. Avison, Shreyans Shingi, Chandrakant C. Patel, Charles R. Comeau, JR., Samuel Lim
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Patent number: 11387521Abstract: 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: GrantFiled: December 28, 2021Date of Patent: July 12, 2022Assignee: Optodot CorporationInventors: David W. Avison, Shreyans Shingi, Chandrakant C. Patel, Charles R. Comeau, Jr., Samuel Lim
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Publication number: 20220123434Abstract: 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: ApplicationFiled: December 28, 2021Publication date: April 21, 2022Inventors: David W. Avison, Shreyans Shingi, Chandrakant C. Patel, Charles R. Comeau, JR., Samuel Lim
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Patent number: 11217859Abstract: 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: GrantFiled: July 13, 2020Date of Patent: January 4, 2022Assignee: OPTODOT CORPORATIONInventors: David W. Avison, Shreyans Shingi, Chandrakant C. Patel, Charles R. Comeau, Jr., Samuel Lim
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Patent number: 10879513Abstract: 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: GrantFiled: April 29, 2014Date of Patent: December 29, 2020Assignee: Optodot CorporationInventors: David W. Avison, Shreyans Shingi, Chandrakant C. Patel, Charles R. Comeau, Jr., Samuel Lim
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Publication number: 20200343507Abstract: 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: ApplicationFiled: July 13, 2020Publication date: October 29, 2020Inventors: David W. Avison, Shreyans Shingi, Chandrakant C. Patel, Charles R. Comeau, JR., Samuel Lim
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Publication number: 20160104876Abstract: 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: ApplicationFiled: April 29, 2014Publication date: April 14, 2016Applicant: OPTODOT CORPORATIONInventors: David W. Avison, Shreyans Shingi, Chandrakant C. Patel, Charles R. Comeau, JR., Samuel Lim
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Patent number: 6294251Abstract: 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: GrantFiled: December 31, 1998Date of Patent: September 25, 2001Assignee: Lintec CorporationInventors: Toshio Minagawa, Kohei Tachikawa, Leonardo M. Garcia, Chandrakant C. Patel
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Patent number: 5683805Abstract: 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: GrantFiled: March 15, 1996Date of Patent: November 4, 1997Assignee: Lintec CorporationInventors: Katsuyuki Oita, Kohei Tachikawa, Leonardo M. Garcia, Chandrakant C. Patel, Toshio Minagawa