Patents by Inventor Thein Kyu

Thein Kyu 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: 20240128503
    Abstract: An energy storage device is provided that includes a first electrode, a second electrode, and a polymer electrolyte membrane disposed between the first electrode and the second electrode. The polymer electrolyte membrane includes a copolymer network including a polyoxide and a polysulfide. The polymer electrolyte membrane is prelithiated by deep discharging of the battery of in a voltage range of ?0.5 V to 5.0 V such that the polymer electrolyte membrane after deep discharging includes additional lithium ions stored therein as compared with prior to deep discharging.
    Type: Application
    Filed: September 30, 2022
    Publication date: April 18, 2024
    Inventors: Thein Kyu, Hyunsang Lee, Jisoo Jeong, Javier Parrondo, Dianne Atienza Hay, Somayeh Zamani
  • Patent number: 11908997
    Abstract: A solid-state polymer electrolyte membrane and a supercapacitive lithium-ion battery utilizing the solid-state polymer electrolyte membrane. The solid-state polymer electrolyte membrane comprising a mixture of a lithium salt, a plasticizer, and a co-network of a crosslinkable polyether addition and a crosslinkable amine addition. The co-network is crosslinked, and the solid-state polymer electrolyte membrane is conductive on the order of 10?3 S cm?1. The supercapacitive lithium-ion battery utilizing the solid-state polymer electrolyte membrane has an operating range of between about 0.01 and about 4.3 V without short-circuiting while also having a higher capacity relative to conventional liquid electrolyte lithium-ion batteries.
    Type: Grant
    Filed: August 23, 2021
    Date of Patent: February 20, 2024
    Assignee: THE UNIVERSITY OF AKRON
    Inventors: Thein Kyu, Ran Li
  • Publication number: 20230389433
    Abstract: Organic Electrochemical Transistors (OECTs) have the potential to enable fully flexible low-cost electronics. Combining OECTs with ionic electroactive polymers (IEAP) yields a highly sensitive bending sensors with respect to mechanical bending. In comparison the proposed sensor has a sensitivity that is several orders of magnitude larger than conventional electroactive polymers.
    Type: Application
    Filed: October 13, 2021
    Publication date: November 30, 2023
    Inventors: Vikash KAPHLE, Chathuranga P.H. RAJAPAKSHA, Björn LÜSSEM, Pushpa Raj PAUDEL, Antal JÁKLI, Thein KYU
  • Patent number: 11814562
    Abstract: An ionic liquid crystal elastomer composition includes a liquid crystal elastomer; and an ionic liquid.
    Type: Grant
    Filed: January 11, 2021
    Date of Patent: November 14, 2023
    Assignees: KENT STATE UNIVERSITY, THE UNIVERSITY OF AKRON
    Inventors: Antal Jákli, Chenrun Feng, Chathuranga Prageeth Hemantha Rajapaksha, Vikash Kaphle, Thein Kyu
  • Publication number: 20220131179
    Abstract: A solid-state polymer electrolyte membrane and a supercapacitive lithium-ion battery utilizing the solid-state polymer electrolyte membrane. The solid-state polymer electrolyte membrane comprising a mixture of a lithium salt, a plasticizer, and a co-network of a crosslinkable polyether addition and a crosslinkable amine addition. The co-network is crosslinked, and the solid-state polymer electrolyte membrane is conductive on the order of 10?3 S cm?1. The supercapacitive lithium-ion battery utilizing the solid-state polymer electrolyte membrane has an operating range of between about 0.01 and about 4.3 V without short-circuiting while also having a higher capacity relative to conventional liquid electrolyte lithium-ion batteries.
    Type: Application
    Filed: August 23, 2021
    Publication date: April 28, 2022
    Inventors: Thein Kyu, Ran Li
  • Publication number: 20210214613
    Abstract: An ionic liquid crystal elastomer composition includes a liquid crystal elastomer; and an ionic liquid.
    Type: Application
    Filed: January 11, 2021
    Publication date: July 15, 2021
    Applicants: Kent State University, The University of Akron
    Inventors: Antal Jákli, Chenrun Feng, Chathuranga Prageeth Hemantha Rajapaksha, Vikash Kaphle, Thein Kyu
  • Patent number: 10731635
    Abstract: A polymer electrolyte membrane assembly includes a polymer electrolyte membrane layer positioned between a first electrode and a second electrode. The polymer electrolyte membrane layer can be made from a composition including a polymer matrix, a plasticizer, and an ionic material. The polymer electrolyte membrane assembly may be utilized to harvest electrical energy by allowing the polymer electrolyte membrane assembly to bend to thereby produce a second ion concentration gradient different from an initial ion concentration gradient.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: August 4, 2020
    Assignee: The University of Akron
    Inventors: Thein Kyu, Camilo Rendon Piedrahita, Jinwei Cao
  • Publication number: 20180337417
    Abstract: A polymer electrolyte membrane assembly includes a polymer electrolyte membrane layer positioned between a first electrode and a second electrode. The polymer electrolyte membrane layer can be made from a composition including a polymer matrix, a plasticizer, and an ionic material. The polymer electrolyte membrane assembly may be utilized to harvest electrical energy by allowing the polymer electrolyte membrane assembly to bend to thereby produce a second ion concentration gradient different from an initial ion concentration gradient.
    Type: Application
    Filed: May 17, 2018
    Publication date: November 22, 2018
    Applicant: The University of Akron
    Inventors: Thein Kyu, Camilo Rendon Piedrahita, Jinwei Cao
  • Patent number: 9548514
    Abstract: A method of creating an electrolyte film includes mixing succinonitrile (SCN), lithium salt and crosslinkable polyether addition to form an isotropic amorphous mixture; and crosslinking the crosslinkable polyether to form a cured film, wherein the cured film remains amorphous without undergoing polymerization-induced phase separation or crystallization.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: January 17, 2017
    Assignee: The University of Akron
    Inventors: Thein Kyu, Mauricio Echeverri
  • Patent number: 9062022
    Abstract: A biocompatible polymer composition suited to forming a dialysis membrane includes a matrix material and at least one xanthone. The composition may be formed into a membrane for inserting into a dialyzer filter whereby free radicals in the fluid are removed by the membrane.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: June 23, 2015
    Assignee: The University of Akron
    Inventors: Thein Kyu, Neelakandan Chandrasekaran
  • Patent number: 8883010
    Abstract: A biocompatible polymer composition which includes a matrix material and at least one of an isoflavone and a flavone at least partially dispersed in the matrix material is suited to use in a membrane for hemodialysis and other in vivo and in vitro applications.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: November 11, 2014
    Assignee: The University of Akron
    Inventors: Neelakandan Chandrasekaran, Thein Kyu
  • Publication number: 20140255772
    Abstract: A method of creating an electrolyte film includes mixing succinonitrile (SCN), lithium salt and crosslinkable polyether addition to form an isotropic amorphous mixture; and crosslinking the crosslinkable polyether to form a cured film, wherein the cured film remains amorphous without undergoing polymerization-induced phase separation or crystallization.
    Type: Application
    Filed: October 22, 2012
    Publication date: September 11, 2014
    Inventors: Thein Kyu, Mauricio Echerriveri
  • Publication number: 20110233138
    Abstract: A biocompatible polymer composition suited to forming a dialysis membrane includes a matrix material and at least one xanthone. The composition may be formed into a membrane for inserting into a dialyzer filter whereby free radicals in the fluid are removed by the membrane.
    Type: Application
    Filed: December 1, 2009
    Publication date: September 29, 2011
    Inventors: Thein Kyu, Neelakandan Chandrasekaran
  • Publication number: 20110186518
    Abstract: A biocompatible polymer composition which includes a matrix material and at least one of an isoflavone and a flavone at least partially dispersed in the matrix material is suited to use in a membrane for hemodialysis and other in vivo and in vitro applications.
    Type: Application
    Filed: April 12, 2011
    Publication date: August 4, 2011
    Applicant: The University of Akron
    Inventors: Neelakandan Chandrasekaran, Thein Kyu
  • Patent number: 6815016
    Abstract: An electrically tunable microlens array. The array is formed by pattern photopolymerization of photoreactive mixtures comprising a polymerizable material and liquid crystals; wherein the photopolymerization is characterized by the interaction of multiple-wave mixing. The liquid crystals are contained as droplets in regions between the polymerized material.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: November 9, 2004
    Assignee: The University of Akron
    Inventors: Thein Kyu, Domasius Nwabunma
  • Publication number: 20040105048
    Abstract: An electrically tunable microlens array. The array is formed by pattern photopolymerization of photoreactive mixtures comprising a polymerizable material and liquid crystals; wherein the photopolymerization is characterized by the interaction of multiple-wave mixing. The liquid crystals are contained as droplets in regions between the polymerized material.
    Type: Application
    Filed: December 23, 2002
    Publication date: June 3, 2004
    Inventors: Thein Kyu, Domasius Nwabunma
  • Patent number: 5905554
    Abstract: The invention pertains generally to miscible polymer blends which can be used in optical applications, particularly in liquid crystal displays and optical adhesives, in that they are essentially birefiringence-free. The polymeric blend alloy includes a first polymer having an inherent positive birefringence and a second polymer having an inherent negative birefringence, the first and second polymers being soluble within each other to predefined limits. The polymer blend is an essentially birefringence-free film layer suitable for use in liquid crystal displays which has adequate mechanical properties, such as dimensional stability, permeability to water vapor, scratch-resistance and insensitivity to temperature, in that it is possible for them to be processed continuously and flexibly to all the required shapes. The polymer blends can be prepared not only from solvent solutions, but by melt-mixing as well.
    Type: Grant
    Filed: January 6, 1997
    Date of Patent: May 18, 1999
    Assignee: The University of Akron
    Inventor: Thein Kyu
  • Patent number: 5049619
    Abstract: Two-component polymeric compositions having two interconnected solid phases, and exhibiting spinodal decomposition morphology at the domain boundaries are shown, as are methods for forming the same. The compositions are prepared from two different polymers one of which possesses ductility in that it shows substantial yield behavior under tensile stressing, the other being brittle, exhibiting no such behavior; thermoplastic polymers, in conjunction with thermotropic liquid crystalline materials, exemplify such systems. The desired morphology is created by preparing the two component compositions in a single solid phase below the lower critical solution temperature of the compositions, and thereafter heating the compositions above such temperature to form a two-phase system.
    Type: Grant
    Filed: April 14, 1989
    Date of Patent: September 17, 1991
    Assignee: Edison Polymer Innovation Corporation
    Inventor: Thein Kyu
  • Patent number: 4743654
    Abstract: Clear, transparent, single phase blends of polycarbonate and a polyalkyl methacrylate in which the alkyl radical contains from 1 to about 10 carbon atoms, and in which the polycarbonate and the polyalkyl methacrylate are miscible in all proportions are obtained. Polymethyl methacrylate (PMMA) is the preferred polyalkyl methacrylate. These blends may be prepared by dissolving the two polymers in a mutual solvent having a boiling point of at least about 30.degree. C. and evaporating the solvent at a temperature of from about 30.degree. C. to the boiling point of the solvent. The preferred evaporation temperatures are from about 45.degree. C. to the boiling point of the solvent. This is in contrast to presently known PC/PMMA blends, which are miscible only when the content is nearly all PC or nearly all PMMA. Preferred blends according to this invention contain from 10 to 80 percent by weight of PC and conversely 90 to 20 percent by weight of PMMA. The single phase blends are moldable and transparent.
    Type: Grant
    Filed: November 13, 1986
    Date of Patent: May 10, 1988
    Assignee: University of Akron
    Inventors: Thein Kyu, Jeanne M. Saldanha