Patents by Inventor Kostantinos Kourtakis

Kostantinos Kourtakis 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: 11254094
    Abstract: In a first aspect, a multilayer polymer film includes a first polymer layer having a first elastic modulus and a second polymer layer having a second elastic modulus. The first polymer layer includes a polyimide, a polyamide imide, a block copolymer of a polyimide or a polyamide imide or a mixture thereof. The second polymer layer includes a polyimide, a polyamide imide, a block copolymer of a polyimide or a polyamide imide or a mixture thereof. The first elastic modulus is different from the second elastic modulus. The first and second polymer layers are bonded by consolidation. In a second aspect, a cover window for a display includes a hard coat layer and the multilayer polymer film of the first aspect. The first polymer layer of the multilayer polymer film is the layer farthest from the display and is adhered to the hard coat layer.
    Type: Grant
    Filed: October 26, 2020
    Date of Patent: February 22, 2022
    Assignee: DUPONT ELECTRONICS, INC.
    Inventors: Kostantinos Kourtakis, Gene M Rossi, Leopoldo Alejandro Carbajal, Mark Allan Lamontia, Mobin Yahyazadehfar, Ross S Johnson, Weiying Gao, Aref Samadidooki
  • Patent number: 11256001
    Abstract: In a first aspect, a low haze polymer film includes a polymer and a refractive index-matching nanoparticle aggregate. The polymer includes a polyimide, a polyamide imide or a polyester imide, and the refractive index-matching nanoparticle aggregate includes a first nanoparticle having a refractive index that is less than the refractive index of the polymer and a second nanoparticle having a refractive index that is greater than the refractive index of the polymer. A difference in the refractive indices of the polymer and the refractive index-matching nanoparticle aggregate is less than 0.1, and the low haze polymer film has a thickness in a range of from 1 to 150 ?m and a haze of less than 4%. In a second aspect, an electronic device includes the low haze polymer film of the first aspect.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: February 22, 2022
    Assignee: DUPONT ELECTRONICS, INC.
    Inventors: Kostantinos Kourtakis, Gene M Rossi
  • Patent number: 11248143
    Abstract: In a first aspect, a coated film includes a polyimide film, a curable resin coating composition and an adhesion-promoter. The curable resin coating composition includes a curable oligomer and first nanoparticles. The adhesion-promoter includes a polyamic acid composition and is on a surface of the polyimide film that is in contact with the curable resin coating composition. In a second aspect, an electronic device includes the coated film of first aspect.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: February 15, 2022
    Assignee: DUPONT ELECTRONICS, INC.
    Inventors: Kostantinos Kourtakis, Tao Huang
  • Patent number: 11104801
    Abstract: In a first aspect, a low haze polyimide film includes, a dianhydride, a diamine, and a color-tuning compound. The low haze polyimide film has a thickness in a range of from 1 to 150 um, an a* closer to zero with a |?a*| greater than 0.2 and a b* that is at most 0.2 further away from zero, or a b* closer to zero with a |?b*| greater than 0.2 and an a* that is at most 0.2 further away from zero, when compared to a low haze polyimide film of the same dianhydride and diamine composition, but without the color-tuning compound, and a haze of less than 4%. In a second aspect, an electronic device includes the low haze polyimide film of the first aspect.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: August 31, 2021
    Inventors: Kostantinos Kourtakis, Gene M Rossi, Peggy Scott
  • Patent number: 11038196
    Abstract: Disclosed herein are electrolyte compositions comprising at least one electrolyte component comprising a cyclic carbonate, such as a fluoroethylene carbonate, and at least one additive comprising a 6-member ring heterocyclic sulfate, such as a 1,3 propylene sulfate. The disclosed electrolyte compositions can comprise additional electrolyte components, such as fluorinated acyclic carboxylic acid esters, and additional additives, such as lithium boron compounds, and cyclic carboxylic acid anhydrides, such as maleic anhydride. The improved battery performances, which include high temperature cycling conditions and/or room temperature stability, make these electrolyte compositions useful in electrochemical cells, such as lithium ion batteries.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: June 15, 2021
    Assignee: Solvay SA
    Inventors: Stephen E. Burkhardt, Kostantinos Kourtakis, Brian Levy-Polis
  • Patent number: 11021606
    Abstract: In a first aspect, a multilayer film includes a first outer layer including a first thermoplastic polyimide, a core layer including a polyimide, and a second outer layer including a second thermoplastic polyimide. The polyimide of the core layer includes a first aromatic dianhydride including 3,3?,4,4?-biphenyl tetracarboxylic dianhydride and a first aromatic diamine including p-phenylenediamine. The multilayer film has a total thickness in a range of from 5 to 150 ?m. A thickness of the core layer is in a range of from 35 to 73% of the total thickness of the multilayer film. A minimum peel strength for at least one of the first and second outer layers, when adhered to copper foil and tested following ASTM method IPC-TM-650, method No. 2.4.9B, is greater than 0.9 kgf/cm (0.88 N/mm). In a second aspect, a metal-clad laminate includes the multilayer film of the first aspect and a first metal layer adhered to an outer surface of the first outer layer of the multilayer film.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: June 1, 2021
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Kostantinos Kourtakis, Rosa Irene Gonzalez, Herbert W Lim
  • Publication number: 20210079181
    Abstract: In a first aspect, a polyimide film includes a dianhydride and a diamine. The dianhydride, the diamine or both the dianhydride and the diamine include an alicyclic monomer, an aliphatic monomer or both an alicyclic monomer and an aliphatic monomer. The polyimide film has a b* of 1.25 or less and a yellowness index of 2.25 or less for a film thickness of 50 ?m. The polyimide film is formed by: (a) polymerizing the dianhydride and the diamine in the presence of a first solvent to obtain a polyamic acid solution; (b) imidizing the polyamic acid solution to form a substantially imidized solution; (c) casting the substantially imidized solution to form a film; and (d) drying the film.
    Type: Application
    Filed: June 25, 2020
    Publication date: March 18, 2021
    Inventors: Kostantinos Kourtakis, Gene M Rossi, Joseph Casey Johnson, Michael Thomas Kwasny
  • Publication number: 20210079182
    Abstract: In a first aspect, a polyimide film includes a dianhydride and a diamine. The dianhydride, the diamine or both the dianhydride and the diamine include an alicyclic monomer, an aliphatic monomer or both an alicyclic monomer and an aliphatic monomer. The polyimide film has a tensile modulus of 5.5 GPa or more, a b* of 1.4 or less and a yellowness index of 2.25 or less for a film thickness of 50 ?m. In a second aspect, an electronic device includes the polyimide film of the first aspect.
    Type: Application
    Filed: June 25, 2020
    Publication date: March 18, 2021
    Inventors: JOSEPH CASEY JOHNSON, KOSTANTINOS KOURTAKIS, MICHAEL THOMAS KWASNY, GENE M. ROSSI
  • Publication number: 20210053314
    Abstract: In a first aspect, a multilayer polymer film includes a first polymer layer having a first elastic modulus and a second polymer layer having a second elastic modulus. The first polymer layer includes a polyimide, a polyamide imide, a block copolymer of a polyimide or a polyamide imide or a mixture thereof. The second polymer layer includes a polyimide, a polyamide imide, a block copolymer of a polyimide or a polyamide imide or a mixture thereof. The first elastic modulus is different from the second elastic modulus. The first and second polymer layers are bonded by consolidation. In a second aspect, a cover window for a display includes a hard coat layer and the multilayer polymer film of the first aspect. The first polymer layer of the multilayer polymer film is the layer farthest from the display and is adhered to the hard coat layer.
    Type: Application
    Filed: October 26, 2020
    Publication date: February 25, 2021
    Inventors: Kostantinos Kourtakis, Gene M Rossi, Leopoldo Alejandro Carbajal, Mark Allan Lamontia, Mobin Yahyazadehfar, Ross S Johnson, Weiying Gao, Aref Samadidooki
  • Patent number: 10916805
    Abstract: Electrolyte compositions comprising fluorinated acyclic carboxylic acid esters, fluorinated acyclic carbonates, and/or fluorinated acyclic ethers; co-solvents; and certain film-forming chemical compounds are described. The electrolyte compositions are useful in electrochemical cells, such as lithium ion batteries where they provide the improved performance of a combination of high capacity and high cycle life.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: February 9, 2021
    Assignee: Solvay SA
    Inventors: Xudong Chen, Charles J. Dubois, William L. Holstein, Kostantinos Kourtakis, Mark Gerrit Roelofs
  • Publication number: 20200369913
    Abstract: In a first aspect, a coated film includes a polyimide film, a curable resin coating composition and an adhesion-promoter. The curable resin coating composition includes a curable oligomer and first nanoparticles. The adhesion-promoter includes a polyamic acid composition and is on a surface of the polyimide film that is in contact with the curable resin coating composition. In a second aspect, an electronic device includes the coated film of first aspect.
    Type: Application
    Filed: May 21, 2020
    Publication date: November 26, 2020
    Inventors: Kostantinos Kourtakis, Tao Huang
  • Publication number: 20200321657
    Abstract: Disclosed herein are electrolyte compositions comprising a fluorinated solvent, a fluorinated sulfone, at least one component selected from a borate salt, and/or an oxalate salt, and/or a fluorinated cyclic carbonate, and at least one electrolyte salt. The fluorinated solvent may be a fluorinated acyclic carboxylic acid ester, a fluorinated acyclic carbonate, a fluorinated acyclic ether, or combinations thereof. The electrolyte compositions are useful in electrochemical cells, such as lithium ion batteries.
    Type: Application
    Filed: June 3, 2016
    Publication date: October 8, 2020
    Inventors: Stephen E. BURKHARDT, Kostantinos KOURTAKIS, Mark Gerrit ROELOFS
  • Publication number: 20200270406
    Abstract: In a first aspect, a polyimide film includes a dianhydride, a fluorinated aromatic diamine and an aliphatic diamine. The polyimide film has a b* of less than one for a film thickness of at least 30 microns and a glass transition temperature of less than 300° C. In a second aspect, an electronic device includes the polyimide film of the first aspect.
    Type: Application
    Filed: February 19, 2020
    Publication date: August 27, 2020
    Inventors: Joseph Casey Johnson, Kostantinos Kourtakis
  • Patent number: 10686220
    Abstract: Electrolyte compositions comprising fluorinated acyclic carboxylic acid esters, fluorinated acyclic carbonates, and/or fluorinated acyclic ethers; co-solvents; and certain film-forming chemical compounds are described. The electrolyte compositions are useful in electrochemical cells, such as lithium ion batteries where they provide the improved performance of a combination of high capacity and high cycle life.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: June 16, 2020
    Assignee: Solvay SA
    Inventors: Stephen E. Burkhardt, Xudong Chen, Charles J. Dubois, William L. Holstein, Kostantinos Kourtakis, Mark Gerrit Roelofs
  • Patent number: 10673096
    Abstract: Described are electrolyte compositions comprising a fluorinated solvent, an organic carbonate, a sultone, and optionally a borate. The fluorinated solvent may be a fluorinated acyclic carboxylic acid ester, a fluorinated acyclic carbonate, a fluorinated acyclic ether, or mixtures thereof. The organic carbonate may be fluorinated or non-fluorinated. The electrolyte compositions are useful in electrochemical cells, such as lithium ion batteries.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: June 2, 2020
    Assignee: Solvay SA
    Inventors: Stephen E. Burkhardt, Kostantinos Kourtakis, Jun J. Liu, Mark Gerrit Roelofs, Sang-Hwan Kim
  • Publication number: 20200147945
    Abstract: In a first aspect, a multilayer polymer film includes a first transparent, colorless polymer layer comprising a polyimide, a polyamide imide, or a block copolymer of a polyimide and a second transparent, colorless polymer layer comprising a polyimide, a polyamide imide, or a block copolymer of a polyimide. An elastic modulus of the first transparent, colorless polymer layer is different than an elastic modulus of the second transparent, colorless polymer layer. The first and second transparent, colorless polymer layers are bonded by consolidation. In a second aspect, a cover window for a display includes the multilayer polymer film of the first aspect. The first transparent, colorless layer of the multilayer polymer film is the layer farthest from the display.
    Type: Application
    Filed: November 12, 2019
    Publication date: May 14, 2020
    Inventors: KOSTANTINOS KOURTAKIS, GENE M ROSSI, LEOPOLDO ALEJANDRO CARBAJAL, MARK ALLAN LAMONTIA, MOBIN YAHYAZADEHFAR
  • Publication number: 20200147943
    Abstract: In a first aspect, a multilayer polymer film includes a first substantially transparent polymer layer having a first elastic modulus and a second substantially transparent polymer layer having a second elastic modulus. The first elastic modulus is different from the second elastic modulus and the first and second substantially transparent polymer layers are bonded by consolidation. In a second aspect, a cover window includes the multilayer polymer film of the first aspect and a layer of a transparent material. The layer of a transparent material has a speed of sound of at least 2000 m/s. In a third aspect, an electronic device includes the cover window of the second aspect.
    Type: Application
    Filed: November 12, 2019
    Publication date: May 14, 2020
    Inventors: KOSTANTINOS KOURTAKIS, Gene M. Rossi, Leopoldo Alejandro Carbajal, Mark Allan Lamontia, Mobin Yahyazadehfar
  • Publication number: 20200123336
    Abstract: In a first aspect, a low haze polymer film includes a polymer and a refractive index-matching nanoparticle aggregate. The polymer includes a polyimide, a polyamide imide or a polyester imide, and the refractive index-matching nanoparticle aggregate includes a first nanoparticle having a refractive index that is less than the refractive index of the polymer and a second nanoparticle having a refractive index that is greater than the refractive index of the polymer. A difference in the refractive indices of the polymer and the refractive index-matching nanoparticle aggregate is less than 0.1, and the low haze polymer film has a thickness in a range of from 1 to 150 ?m and a haze of less than 4%. In a second aspect, an electronic device includes the low haze polymer film of the first aspect.
    Type: Application
    Filed: October 16, 2019
    Publication date: April 23, 2020
    Inventors: KOSTANTINOS KOURTAKIS, Gene M. Rossi
  • Patent number: 10559850
    Abstract: Described herein are electrolyte compositions containing an organic carbonate, a fluorinated solvent, a cyclic sulfate, and at least one electrolyte salt. The cyclic sulfate can be represented by the formula: wherein each A is independently a hydrogen or an optionally fluorinated vinyl, allyl, acetylenic, propargyl, or C1-C3 alkyl group. The electrolyte compositions are useful in electrochemical cells, such as lithium ion batteries.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: February 11, 2020
    Assignee: Solvay SA
    Inventors: Charles J. Dubois, Kostantinos Kourtakis, Jun J. Liu, Mark Gerrit Roelofs
  • Publication number: 20190334197
    Abstract: Disclosed herein are electrolyte compositions comprising at least one electrolyte component comprising a cyclic carbonate, such as a fluoroethylene carbonate, and at least one additive comprising a 6-member ring heterocyclic sulfate, such as a 1,3 propylene sulfate. The disclosed electrolyte compositions can comprise additional electrolyte components, such as fluorinated acyclic carboxylic acid esters, and additional additives, such as lithium boron compounds, and cyclic carboxylic acid anhydrides, such as maleic anhydride. The improved battery performances, which include high temperature cycling conditions and/or room temperature stability, make these electrolyte compositions useful in electrochemical cells, such as lithium ion batteries.
    Type: Application
    Filed: September 12, 2017
    Publication date: October 31, 2019
    Inventors: Stephen E. BURKHARDT, Kostantinos KOURTAKIS, Brian LEVY-POLIS