Patents by Inventor Tsutomu Sada
Tsutomu Sada 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: 20220102703Abstract: 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 conductiveType: ApplicationFiled: January 27, 2020Publication date: March 31, 2022Applicant: PIOTREK CO., LTD.Inventor: Tsutomu SADA
-
Publication number: 20180340061Abstract: 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: ApplicationFiled: October 19, 2015Publication date: November 29, 2018Applicant: Piotrek Co., Ltd.Inventors: Naoya OGATA, Tsutomu SADA
-
Patent number: 9979037Abstract: 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: GrantFiled: June 6, 2016Date of Patent: May 22, 2018Assignee: PIOTREK CO., LTD.Inventors: Naoya Ogata, Fumito Yamai, Tsutomu Sada
-
Patent number: 9960634Abstract: Power generation and storage system and/or solar power generation and storage packaged panels and storage functions in a device and their installment of Signal UPS system device and this power equipment Station combined with various electric power generators. The first aspect of his invention relates to Intelligent function installing Power generation and storage system, involving a control system of Charge-Discharge, Power storage and supplemental charge-discharge functions, packaging lithium ion rechargeable battery (LIB) (1) sole or a combination of LIB and capacitor-condenser as battery units, Charge-Discharge Control Unit (2) containing Charge-Discharge controller.Type: GrantFiled: December 9, 2011Date of Patent: May 1, 2018Assignee: GEM CORPORATIONInventor: Tsutomu Sada
-
Publication number: 20170040632Abstract: 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: ApplicationFiled: June 6, 2016Publication date: February 9, 2017Applicant: PIOTREK CO., LTD.Inventors: Naoya OGATA, Fumito YAMAI, Tsutomu SADA
-
Patent number: 9562126Abstract: 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: GrantFiled: March 30, 2010Date of Patent: February 7, 2017Assignee: PIOTREK CO., LTD.Inventors: Naoya Ogata, Fumito Yamai, Tsutomu Sada
-
Publication number: 20120202094Abstract: Power generation and storage system and/or solar power generation and storage packaged panels and storage functions in a device and their installment of Signal UPS system device and this power equipment Station combined with various electric power generators. The first aspect of his invention relates to Intelligent function installing Power generation and storage system, involving a control system of Charge-Discharge, Power storage and supplemental charge-discharge functions, packaging lithium ion rechargeable battery (LIB) (1) sole or a combination of LIB and capacitor-condenser as battery units, Charge-Discharge Control Unit (2) containing Charge-Discharge controller.Type: ApplicationFiled: December 9, 2011Publication date: August 9, 2012Applicant: GEM CORPORATIONInventor: Tsutomu SADA
-
Publication number: 20120107726Abstract: 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: ApplicationFiled: March 30, 2010Publication date: May 3, 2012Applicant: PIOTREK CO., LTD.Inventors: Naoya Ogata, Fumito Yamai, Tsutomu Sada
-
Patent number: 7629079Abstract: A lithium secondary battery which comprises: a negative electrode comprising as an active material a carbonaceous material capable of electrochemically holding/releasing lithium; a positive electrode comprising as an active material a lithium chalcogenide; and polymer electrolyte layers united respectively with the negative electrode and the positive electrode. The polymer electrolyte layers comprise an ionically conductive polymer matrix holding a nonaqueous electrolytic solution. They are obtained by crosslinking and polymerizing a liquid mixture of a monomeric precursor for the ionically conductive polymer and the nonaqueous electrolytic solution respectively on the negative electrode and the positive electrode using different polymerization initiators.Type: GrantFiled: September 28, 2001Date of Patent: December 8, 2009Assignees: Dai-Ichi Kogyo Seiyaki Co., Ltd., Sharp CorporationInventors: Tsutomu Sada, Kazunari Takeda, Yumiko Takashima, Naoto Nishimura, Takehito Mitate, Kazuo Yamada, Motoaki Nishijima, Naoto Torata, Kouichi Ui
-
Patent number: 7311998Abstract: A polymer battery which comprises a negative electrode comprising a carbon material as an active material, an electrolyte layer and a positive electrode comprising a chalcogenide containing lithium as an active material, characterized in that the electrolyte layer comprises an ion-conducting compound and a polymer fiber, and the carbon material comprises the graphite particles having amorphous carbon adhered on the surface thereof. The polymer battery is capable of preventing the decomposition of the ion-conductive material by graphite particles.Type: GrantFiled: November 17, 2000Date of Patent: December 25, 2007Assignee: Sharp Kabushiki KaishaInventors: Tsutomu Sada, Kazunari Takeda, Naoto Nishimura, Takehito Mitate, Naoto Torata, Kazuo Yamada, Motoaki Nishijima
-
Patent number: 7273503Abstract: A lithium polymer secondary cell having a negative electrode, a positive electrode and, arranged between the electrodes, a polymer electrolyte layer, characterized in that the cell has been subjected to a heat treatment at a temperature of 40 to 60° C. after the assembly thereof. The polymer cell is freed of or is reduced in the adverse effect of a residual monomer and initiator on the performance of the cell. The polymer electrolyte is formed by cross-linking polymerization of a precursor monomer for an ion conducting polymer in a non-aqueous electrolyte, and the residual monomer and initiator contained therein is consumed by the heat treatment.Type: GrantFiled: September 28, 2001Date of Patent: September 25, 2007Assignee: Sharp CorporationInventors: Tsutomu Sada, Kazunari Takeda, Yumiko Takashima, Naoto Nishimura, Takehito Mitate, Kazuo Yamada, Motoaki Nishijima, Naoto Torata
-
Patent number: 7270914Abstract: In a lithium secondary cell having a negative electrode, a positive electrode and, arranged between the electrodes, a polymer electrolyte layer, the internal resistance of the cell and the interfacial resistance between the electrode and the polymer electrolyte can be reduced by incorporating into the electrode, in advance, a polymer electrolyte precursor solution in a manner such that the electrode has a higher content of the precursor monomer and/or an oligomer thereof than that in the polymer electrolyte layer formed on the electrode.Type: GrantFiled: September 28, 2001Date of Patent: September 18, 2007Assignee: Sharp CorporationInventors: Tsutomu Sada, Kazunari Takeda, Yumiko Takashima, Naoto Nishimura, Takehito Mitate, Kazuo Yamada, Motoaki Nishijima, Naoto Torata
-
Patent number: 7238444Abstract: A lithium secondary battery which comprises a negative electrode, a positive electrode, and disposed therebetween a polymer electrolyte comprising an ionically conductive polymer. The polymer electrolyte has a two-layer structure composed of a positive-electrode-side layer and a negative-electrode-side layer. The polymer electrolyte on the positive-electrode side contains a nonaqueous electrolytic solution containing a lithium salt in a higher concentration than that in the polymer electrolyte on the negative-electrode side. The battery is improved in charge/discharge cycling characteristics and high-load discharge characteristics.Type: GrantFiled: September 28, 2001Date of Patent: July 3, 2007Assignees: Dai-Ichi Kogyo Seiyaku Co., Ltd., Sharp CorporationInventors: Tsutomu Sada, Kazunari Takeda, Yumiko Takashima, Naoto Nishimura, Takehito Mitate, Kazuo Yamada, Motoaki Nishijima, Naoto Torata
-
Patent number: 7192675Abstract: A lithium polymer secondary battery which comprises a negative electrode, a positive electrode, and polymer electrolyte layers united respectively with the two electrodes and differing in viscoelastic behavior. In this battery, conformation to the expansion and shrinkage accompanying charge/discharge is easy and the interfacial resistance between each electrode and the polymer electrolyte is kept low.Type: GrantFiled: September 28, 2001Date of Patent: March 20, 2007Assignee: Sharp Kabushiki KaishaInventors: Tsutomu Sada, Kazunari Takeda, Yumiko Takashima, Naoto Nishimura, Takehito Mitate, Kazuo Yamada, Motoaki Nishijima, Naoto Torata
-
Publication number: 20050100788Abstract: In a lithium secondary cell having a negative electrode, a positive electrode and, arranged between the electrodes, a polymer electrolyte layer, the internal resistance of the cell and the interfacial resistance between the electrode and the polymer electrolyte can be reduced by incorporating into the electrode, in advance, a polymer electrolyte precursor solution in a manner such that the electrode has a higher content of the precursor monomer and/or an oligomer thereof than that in the polymer electrolyte layer formed on the electrode.Type: ApplicationFiled: September 28, 2001Publication date: May 12, 2005Inventors: Tsutomu Sada, Kazunari Takeda, Yumiko Takashima, Naoto Nishimura, Takehito Mitate, Kazuo Yamada, Motoaki Nishijima, Naoto Torata
-
Publication number: 20040048159Abstract: A lithium polymer secondary battery which comprises a negative electrode, a positive electrode, and polymer electrolyte layers united respectively with the two electrodes and differing in viscoelastic behavior. In this battery, conformation to the expansion and shrinkage accompanying charge/discharge is easy and the interfacial resistance between each electrode and the polymer electrolyte is kept low.Type: ApplicationFiled: September 3, 2003Publication date: March 11, 2004Inventors: Tsutomu Sada, Kazunari Takeda, Yumiko Takashima, Naoto Nishimura, Takehito Mitate, Kazuo Yamada, Motoaki Nishijima, Naoto Torata
-
Publication number: 20040029010Abstract: A lithium secondary battery which comprises a negative electrode, a positive electrode, and disposed therebetween a polymer electrolyte comprising an ionically conductive polymer. The polymer electrolyte has a two-layer structure composed of a positive-electrode-side layer and a negative-electrode-side layer. The polymer electrolyte on the positive-electrode side contains a nonaqueous electrolytic solution containing a lithium salt in a higher concentration than that in the polymer electrolyte on the negative-electrode side. The battery is improved in charge/discharge cycling characteristics and high-load discharge characteristics.Type: ApplicationFiled: August 12, 2003Publication date: February 12, 2004Inventors: Tsutomu Sada, Kazunari Takeda, Yumiko Takashima, Naoto Nishimura, Takehito Mitate, Kazuo Yamada
-
Publication number: 20040029009Abstract: A lithium secondary cell with a small decrease in discharge capacity during high-load discharge and little self-discharge. The electrolytic layers of the cell consist of positive-side and negative-side polymer electrolytic layers integrated with their respective electrodes, wherein the positive-side electrolytic layer is lower than the negative-side electrolytic layer indirect current resistance.Type: ApplicationFiled: August 12, 2003Publication date: February 12, 2004Inventors: Tsutomu Sada, Kazunari Takeda, Yumiko Takashima, Naoto Mishimura, Takehito Mitate, Kazuo Yamada
-
Publication number: 20040023114Abstract: A lithium polymer secondary cell having a negative electrode, a positive electrode and, arranged between the electrodes, a polymer electrolyte layer, characterized in that the cell has been subjected to a heat treatment at a temperature of 40 to 60° C. after the assembly thereof. The polymer cell is freed of or is reduced in the adverse effect of a residual monomer and initiator on the performance of the cell. The polymer electrolyte is formed by cross-linking polymerization of a precursor monomer for an ion conducting polymer in a non-aqueous electrolyte, and the residual monomer and initiator contained therein is consumed by the heat treatment.Type: ApplicationFiled: August 20, 2003Publication date: February 5, 2004Inventors: Tsutomu Sada, Kazunari Takeda, Yumiko Takashima, Naoto Nishimura, Takehito Mitate, Kazuo Yamada, Motoaki Nishijima, Naoto Torata
-
Patent number: 6190804Abstract: A solid battery using a solid electrolyte obtained by dissolving a tetrafunctional high-molecular compound and an electrolyte salt in a solvent and crosslinking the solution by the irradiation of an actinic radiation and/or by heating, wherein the solid electrolyte is one obtained by using a tetrafunctional terminal acryloyl-modified alkylene oxide polymer having a high-molecular chain represented by following formula (I) as the above-described tetrafunctional high-molecular compound, compounding the solvent with the polymer at a ratio of from 220 to 1,900% by weight to the above-described tetrafunctional high-molecular compound, and crosslinking the compounded mixture: wherein R1 and R2 each represents a hydrogen atom or a lower alkyl group; R3 represents a hydrogen atom or a methyl group; m and n each represents 0 or an integer of at least 1; in one high-molecular chain, m+n≧35.Type: GrantFiled: December 1, 1998Date of Patent: February 20, 2001Assignee: Dai-Ichi Kogyo Seiyaku Co., Ltd.Inventors: Eriko Ishiko, Michiyuki Kono, Tsutomu Sada