Patents Assigned to PIOTREK CO., LTD.
  • Patent number: 11735763
    Abstract: Solid state solid electrolyte rechargeable battery in no use of separator comprising a positive electrode/a conductive polymer solid state electrolyte layer/a negative electrode in which the solid state electrolyte layer is a composition comprising an inorganic solid electrolyte and a polymer electrolyte composition wherein the polymer electrolyte composition is selected from the group consisting of a polymer electrolyte composition (X1) obtained by graft polymerizing or living radical polymerization of a molten salt monomer having a polymerizable functional group and having an onium cation and an anion containing a halogen with a fluoro polymer, and a polymer electrolyte composition comprising (X1) and at least one kind selected from the following (X2) and (X3), X2: a molten salt having an onium cation and an anion containing a halogen, or a molten salt monomer having a polymerizable functional group and having an onium cation, X3: a polymer or copolymer of a molten salt monomer having a polymerizable funct
    Type: Grant
    Filed: January 4, 2021
    Date of Patent: August 22, 2023
    Assignee: Piotrek Co., Ltd.
    Inventor: Sada Tsutomu
  • Publication number: 20220102703
    Abstract: Production of conductive polymer inorganic solid electrolyte secondary batteries: (I) producing positive electrode with close-packed structure having a pore packing rate of at least 70% including a conductive material and an ion-transfer binder; (II) positive electrode obtained in (I) impregnated and filled and/or surface thin-film coated with conductive polymer solution; (III) inorganic solid electrolyte blended into the conductive polymer solution and casting shiny prepared on the positive electrode obtained in (II), surface-coated, and integrally formed with the positive electrode, or conductive polymer solid electrolyte membrane is prepared, press-bonded, and molded into two layers, to produce a positive electrode; heating (IV) positive electrode having the conductive polymer and inorganic solid electrolyte obtained in (III); and (V) positive electrode having conductive polymer solid electrolyte obtained in (IV) and bonding/heat pressing a negative electrode, or a negative electrode having the conductive
    Type: Application
    Filed: January 27, 2020
    Publication date: March 31, 2022
    Applicant: PIOTREK CO., LTD.
    Inventor: Tsutomu SADA
  • Publication number: 20210135272
    Abstract: Solid state solid electrolyte rechargeable battery in no use of separator comprising a positive electrode/a conductive polymer solid state electrolyte layer/a negative electrode in which the solid state electrolyte layer is a composition comprising an inorganic solid electrolyte and a polymer electrolyte composition wherein the polymer electrolyte composition is selected from the group consisting of a polymer electrolyte composition (X1) obtained by graft polymerizing or living radical polymerization of a molten salt monomer having a polymerizable functional group and having an onium cation and an anion containing a halogen with a fluoro polymer, and a polymer electrolyte composition comprising (X1) and at least one kind selected from the following (X2) and (X3), X2: a molten salt having an onium cation and an anion containing a halogen, or a molten salt monomer having a polymerizable functional group and having an onium cation, X3: a polymer or copolymer of a molten salt monomer having a polymerizable fun
    Type: Application
    Filed: January 4, 2021
    Publication date: May 6, 2021
    Applicant: Piotrek Co., Ltd.
    Inventor: Sada TSUTOMU
  • Publication number: 20200350616
    Abstract: Solid state solid electrolyte rechargeable battery in no use of separator comprising a positive electrode/a conductive polymer solid state electrolyte layer/a negative electrode in which the solid state electrolyte layer is a composition comprising an inorganic solid electrolyte and a polymer electrolyte composition wherein the polymer electrolyte composition is selected from the group consisting of a polymer electrolyte composition (X1) obtained by graft polymerizing or living radical polymerization of a molten salt monomer having a polymerizable functional group and having an onium cation and an anion containing a halogen with a fluoro polymer, and a polymer electrolyte composition comprising (X1) and at least one kind selected from the following (X2) and (X3), X2: a molten salt having an onium cation and an anion containing a halogen, or a molten salt monomer having a polymerizable functional group and having an onium cation, X3: a polymer or copolymer of a molten salt monomer having a polymerizable fun
    Type: Application
    Filed: April 27, 2018
    Publication date: November 5, 2020
    Applicant: Piotrek Co., Ltd.
    Inventor: Sada TSUTOMU
  • Publication number: 20190270876
    Abstract: This invention proposes a conductive material having a high conductivity, a high density conductivity, a pressure sensitive adhesiveness, a durability and a high speed responsibility. A conductive material comprising a polymer electrolyte composition (X1) obtained by graft polymerizing or living polymerizing 2 to 90 mole % of a molten salt monomer having a polymerizable functional group and having an onium cation and anion containing a fluorine with at least one kind selected from the group consisting of a fluorine containing polymer, vinyl acetal polymer, rubber having a polar group and cellulose having a hydroxyl and/or carboxyl group and a polymer or copolymer (X2) of a molten salt monomer having a polymerizable functional group and having an onium cation and anion containing a fluorine, wherein the amount of X1 is 5 to 90 wt. % based on the total amount of X1 and X2.
    Type: Application
    Filed: August 30, 2017
    Publication date: September 5, 2019
    Applicant: PIOTREK CO., LTD.
    Inventor: Sada TSUTOMU
  • Publication number: 20180340061
    Abstract: Problems to be solved by this invention This invention proposes a conductive material and multilayered structure having an excellent conductivity, an excellent durable conductivity and also strength. Further, this invention proposes a multilayered structure having an excellent conductivity, an excellent durable conductivity and also strength comprising laminating the conductive material to one side surface or both surfaces of the non-conductive material layer. The above purpose is accomplished by providing a conductive material comprising a polymer electrolyte composition (X1) obtained by graft polymerizing 2 to 90 mol. % of a molten salt monomer having a polymerizable functional group and having an onium cation and anion containing a fluorine with a fluorine containing polymer and a fluoropolymer (X2) wherein X1 contains 0.1 to 95A wt. % to X2.
    Type: Application
    Filed: October 19, 2015
    Publication date: November 29, 2018
    Applicant: Piotrek Co., Ltd.
    Inventors: Naoya OGATA, Tsutomu SADA
  • Patent number: 9979037
    Abstract: According to this invention, a process for producing fluorine containing polymer to obtain composite polymer electrolyte composition having excellent ion transport number, that is, ion transfer coefficient, for example, excellent transport number of lithium ion, is provided. A process for producing fluorine containing polymer comprising graft-polymerizing a molten salt monomer having a polymerizable functional group and a quaternary ammonium salt structure having a quaternary ammonium cation and anion, with a polymer having the following unit; —(CR1R2—CFX)— X means halogen atom except fluorine atom, R1 and R2 mean hydrogen or fluorine atom, each is same or different atom.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: May 22, 2018
    Assignee: PIOTREK CO., LTD.
    Inventors: Naoya Ogata, Fumito Yamai, Tsutomu Sada
  • Publication number: 20170040632
    Abstract: According to this invention, a process for producing fluorine containing polymer to obtain composite polymer electrolyte composition having excellent ion transport number, that is, ion transfer coefficient, for example, excellent transport number of lithium ion, is provided. A process for producing fluorine containing polymer comprising graft-polymerizing a molten salt monomer having a polymerizable functional group and a quaternary ammonium salt structure having a quaternary ammonium cation and anion, with a polymer having the following unit; —(CR1R2—CFX)— X means halogen atom except fluorine atom, R1 and R2 mean hydrogen or fluorine atom, each is same or different atom.
    Type: Application
    Filed: June 6, 2016
    Publication date: February 9, 2017
    Applicant: PIOTREK CO., LTD.
    Inventors: Naoya OGATA, Fumito YAMAI, Tsutomu SADA
  • Patent number: 9562126
    Abstract: According to this invention, a process for producing fluorine containing polymer to obtain composite polymer electrolyte composition having excellent ion transport number, that is, ion transfer coefficient, for example, excellent transport number of lithium ion, is provided. A process for producing fluorine containing polymer comprising graft-polymerizing a molten salt monomer having a polymerizable functional group and a quaternary ammonium salt structure having a quaternary ammonium cation and anion, with a polymer having the following unit; —(CR1R2—CFX)— X means halogen atom except fluorine atom, R1 and R2 mean hydrogen or fluorine atom, each is same or different atom.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: February 7, 2017
    Assignee: PIOTREK CO., LTD.
    Inventors: Naoya Ogata, Fumito Yamai, Tsutomu Sada
  • Patent number: 8492511
    Abstract: The invention relates to a process for the preparation of crosslinked polymers bearing nitroxide groups, which are prepared by a method frequently called atom transfer radical addition polymerization (ATRA). A further aspect of the invention is the use of such polymeric crosslinked nitroxides as stabilizers for polymers against the detrimental influences of heat and UV light, as stabilizers against premature polymerization of vinyl aromatic monomers and as active electrode materials in secondary batteries.
    Type: Grant
    Filed: March 28, 2007
    Date of Patent: July 23, 2013
    Assignee: Piotrek Co., Ltd.
    Inventors: Peter Nesvadba, Lucienne Bugnon
  • Publication number: 20120107726
    Abstract: According to this invention, a process for producing fluorine containing polymer to obtain composite polymer electrolyte composition having excellent ion transport number, that is, ion transfer coefficient, for example, excellent transport number of lithium ion, is provided. A process for producing fluorine containing polymer comprising graft-polymerizing a molten salt monomer having a polymerizable functional group and a quaternary ammonium salt structure having a quaternary ammonium cation and anion, with a polymer having the following unit; —(CR1R2—CFX)— X means halogen atom except fluorine atom, R1 and R2 mean hydrogen or fluorine atom, each is same or different atom.
    Type: Application
    Filed: March 30, 2010
    Publication date: May 3, 2012
    Applicant: PIOTREK CO., LTD.
    Inventors: Naoya Ogata, Fumito Yamai, Tsutomu Sada