Patents by Inventor Masao Iwaya

Masao Iwaya 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: 11621422
    Abstract: An electrode slurry contains (A) a cellulose fiber, (B) a carboxymethyl-group-containing cellulose ether or a salt thereof, and a particulate material containing at least (C) an electrode active material, and the cellulose fiber (A) has an average fiber length of 1 to 750 ?m. The amount of the carboxymethyl-group-containing cellulose ether or the salt thereof (B) is 0.1 to 3 parts by weight based on 100 parts by weight of the total amount of the cellulose fiber (A), the carboxymethyl-group-containing cellulose ether or the salt thereof (B), and the electrode active material (C), in terms of solid content. The present invention provides an electrode slurry that allows an improved surface smoothness (coating uniformity) of an electrode and an improved coating property, a process for producing the electrode slurry, an electrode, a process for producing the electrode, a non-aqueous secondary battery, and a lithium-ion secondary battery.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: April 4, 2023
    Assignees: DAICEL CORPORATION, DAICEL FINECHEM LTD.
    Inventors: Masao Iwaya, Shinya Ono, Naoki Doi
  • Publication number: 20230099980
    Abstract: Provide are an ionic liquid composition for a carbon dioxide separation membrane, a carbon dioxide separation membrane retaining the composition in voids, and a carbon dioxide concentration apparatus provided with the carbon dioxide separation membrane that can be used to separate carbon dioxide from high partial pressure to low partial pressure. The permeability of CO2 and CO2 selectivity ratio of the carbon dioxide separation membrane can be improved, and carbon dioxide from high partial pressure to a low partial pressure of 1 kPa or lower can be selectively separated and recycled by using an ionic liquid composition prepared by combining: an ionic liquid (I) that is an aminium having one or more primary or secondary amino groups and an ethylenediamine or propylenediamine backbone in the cation; and an ionic liquid (II) in which the cation has no primary or secondary amino group and the anion is an oxoacid anion.
    Type: Application
    Filed: February 16, 2021
    Publication date: March 30, 2023
    Inventors: Takashi MAKINO, Mitsuhiro KANAKUBO, Masao IWAYA, Yo YAMATO
  • Patent number: 11524265
    Abstract: A carbon dioxide separation membrane according to the present invention includes: an ionic liquid affinitive porous layer (C) having an ionic liquid-containing liquid (A) retained in voids; and an ionic liquid non-affinitive porous layer (B). The ionic liquid affinitive porous layer (C) may contain inorganic materials (for example, metal oxide particles having an average particle size of about 0.001 to 5 ?m on a number basis). An average thickness of the ionic liquid affinitive porous layer (C) may be about from 0.01 to 10 ?m. The ionic liquid affinitive porous layer (C) may include the ionic liquid-containing liquid (A) at a ratio from 0.1 to 99 parts by volume with respect to 100 parts by volume of voids. It may be a carbon dioxide separation membrane for fertilizing plants with carbon dioxide. The carbon dioxide separation membrane can reduce a size of the carbon dioxide concentrating device and enables smooth operation of the device.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: December 13, 2022
    Assignee: DAICEL CORPORATION
    Inventors: Toshikazu Nakamura, Masao Iwaya, Takamasa Suzuki, Tomohiro Goto
  • Patent number: 11491447
    Abstract: This ionic liquid-containing laminate includes a porous layer having affinity with ionic liquids (C), said layer holding an ionic liquid-containing liquid (A) within voids therein, and a porous layer lacking affinity with ionic liquids (B). The porous layer having affinity with ionic liquids (C) may include an inorganic material (e.g., metal oxide particles having an average particle size of 0.001 to 10 ?m on a number basis). The ionic liquid-containing liquid (A) may include an ionic liquid containing cations selected from ammonium, imidazolium and phosphonium cations, and anions selected from fluorine-containing anions, cyano-containing anions and amino acid-derived anions. The porous layer having affinity with ionic liquids (C) may include 1 to 100 volume parts of the ionic liquid-containing liquid (A) with respect to 100 volume parts of voids therein.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: November 8, 2022
    Assignee: DAICEL CORPORATION
    Inventors: Toshikazu Nakamura, Masao Iwaya, Takamasa Suzuki, Tomohiro Goto
  • Patent number: 11094934
    Abstract: An electrode slurry contains (A) a cellulose fiber and (C) an electrode active material, the electrode active material (C) contains at least a silicon particle and may contain a silicon particle and a carbonaceous particle. The slurry may further contain (B) a carboxymethyl-group-containing cellulose ether or a salt thereof. The average fiber length L (1 to 750 ?m) of the cellulose fiber (A) is larger than the average particle size DSi (1 nm to 1 ?m) of the silicon particle as the electrode active material (C). The average particle size ratio L/DSi is 5 to 15,000. The electrode slurry can improve a discharge capacity and is useful for forming an electrode of a non-aqueous secondary battery (lithium-ion secondary battery) that can maintain a high discharge capacity after repeated charging and discharging.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: August 17, 2021
    Assignees: DAICEL CORPORATION, DAICEL FINECHEM LTD.
    Inventors: Masao Iwaya, Shinya Ono, Naoki Doi
  • Publication number: 20210154622
    Abstract: A carbon dioxide separation membrane according to the present invention includes: an ionic liquid affinitive porous layer (C) having an ionic liquid-containing liquid (A) retained in voids; and an ionic liquid non-affinitive porous layer (B). The ionic liquid affinitive porous layer (C) may contain inorganic materials (for example, metal oxide particles having an average particle size of about 0.001 to 5 ?m on a number basis). An average thickness of the ionic liquid affinitive porous layer (C) may be about from 0.01 to 10 ?m. The ionic liquid affinitive porous layer (C) may include the ionic liquid-containing liquid (A) at a ratio from 0.1 to 99 parts by volume with respect to 100 parts by volume of voids. It may be a carbon dioxide separation membrane for fertilizing plants with carbon dioxide. The carbon dioxide separation membrane can reduce a size of the carbon dioxide concentrating device and enables smooth operation of the device.
    Type: Application
    Filed: April 27, 2018
    Publication date: May 27, 2021
    Applicant: Daicel Corporation
    Inventors: Toshikazu NAKAMURA, Masao IWAYA, Takamasa SUZUKI, Tomohiro GOTO
  • Publication number: 20210083275
    Abstract: An electrode slurry contains (A) a cellulose fiber and (C) an electrode active material, the electrode active material (C) contains at least a silicon particle and may contain a silicon particle and a carbonaceous particle. The slurry may further contain (B) a carboxymethyl-group-containing cellulose ether or a salt thereof. The average fiber length L (1 to 750 ?m) of the cellulose fiber (A) is larger than the average particle size DSi (1 nm to 1 ?m) of the silicon particle as the electrode active material (C). The average particle size ratio L/DSi is 5 to 15000. The electrode slurry can improve a discharge capacity and is useful for forming an electrode of a non-aqueous secondary battery (lithium-ion secondary battery) that can maintain a high discharge capacity after repeated charging and discharging.
    Type: Application
    Filed: January 10, 2018
    Publication date: March 18, 2021
    Applicants: Daicel Corporation, Daicel FineChem Ltd.
    Inventors: Masao IWAYA, Shinya ONO, Naoki DOI
  • Publication number: 20200411828
    Abstract: Provided is a secondary battery separator that is lightweight and excels in heat resistance. The secondary battery separator of the present invention includes a porous base layer (A), and a heat resistant layer (B) formed from a non-woven fabric containing a binder and microfibers having a melting point (or a decomposition temperature in case of the microfibers having no melting point) of 200° C. or higher. The microfibers are preferably aramid fibers, and the binder is preferably at least one type selected from a polysaccharide derivative (1), a compound having a constituent unit represented by formula (2), and a compound having a constituent unit represented by Formula (3). In the formulas, R denotes a hydroxyl group, a carboxyl group, a phenyl group, an N-substituted or unsubstituted carbamoyl group, or a 2-oxo-1-pyrrolidinyl group, n is an integer of 2 or higher, and L denotes an ether bond or an (—NH—) group.
    Type: Application
    Filed: February 22, 2019
    Publication date: December 31, 2020
    Applicant: DAICEL CORPORATION
    Inventors: Akito YAMAMOTO, Masao IWAYA
  • Publication number: 20200230925
    Abstract: The present invention provides a laminated body obtained by bonding a thinned glass plate and a resin film with an adhesive agent, the laminated body having excellent bending resistance. The laminated body according to an embodiment of the present invention comprising a structure having a glass plate with a thickness of 150 ?m or less and a resin film laminated with an adhesive layer; the laminated body having a bending resistance based on a test below of 10 or greater. Bending Resistance Test: in the case where a set of operation includes bending a laminated body for 180° from a state where the laminated body is stretched, in a direction that makes a surface of a glass plate concave and a bending radius 3 mm and then stretching the laminated body again, an index of the bending resistance is the number of sets of the operation until the laminated body cracks when the operation was performed at a rate of 43 sets per minute.
    Type: Application
    Filed: April 25, 2018
    Publication date: July 23, 2020
    Applicant: DAICEL CORPORATION
    Inventors: Naotaka NISHIO, Tomoya MIZUTA, Masao IWAYA, Toshikazu NAKAMURA
  • Patent number: 10703951
    Abstract: Disclosed is a heat transport medium to be transported with a fluid that is liquid in an operating temperature range containing a porous material and a latent heat storage material penetrated in the pores of the porous material, wherein the latent heat storage material is incompatible with the fluid and has a melting point within the operating temperature range, and the porous material has a liquid repellency to the fluid, an affinity for the latent heat storage material, and a sponge hardness of not more than 50. This invention achieves stable heat transport with a high heat conversion efficiency even by circulating the medium through a pipeline over a long period of time. The porous material has an apparent density of about 0.05 to 0.5 g/cm3.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: July 7, 2020
    Assignee: DAICEL CORPORATION
    Inventors: Masao Iwaya, Tomoya Mizuta, Naotaka Nishio, Yutaka Isobe, Masatake Kudoh, Masanori Yoshikane
  • Publication number: 20200094195
    Abstract: This ionic liquid-containing laminate includes a porous layer having affinity with ionic liquids (C), said layer holding an ionic liquid-containing liquid (A) within voids therein, and a porous layer lacking affinity with ionic liquids (B). The porous layer having affinity with ionic liquids (C) may include an inorganic material (e.g., metal oxide particles having an average particle size of 0.001 to 10 ?m on a number basis). The ionic liquid-containing liquid (A) may include an ionic liquid containing cations selected from ammonium, imidazolium and phosphonium cations, and anions selected from fluorine-containing anions, cyano-containing anions and amino acid-derived anions. The porous layer having affinity with ionic liquids (C) may include 1 to 100 volume parts of the ionic liquid-containing liquid (A) with respect to 100 volume parts of voids therein.
    Type: Application
    Filed: April 27, 2018
    Publication date: March 26, 2020
    Applicant: Daicel Corporation
    Inventors: Toshikazu NAKAMURA, Masao IWAYA, Takamasa SUZUKI, Tomohiro GOTO
  • Publication number: 20190334175
    Abstract: An electrode slurry contains (A) a cellulose fiber, (B) a carboxymethyl-group-containing cellulose ether or a salt thereof, and a particulate material containing at least (C) an electrode active material, and the cellulose fiber (A) has an average fiber length of 1 to 750 ?m. The amount of the carboxymethyl-group-containing cellulose ether or the salt thereof (B) is 0.1 to 3 parts by weight based on 100 parts by weight of the total amount of the cellulose fiber (A), the carboxymethyl-group-containing cellulose ether or the salt thereof (B), and the electrode active material (C), in terms of solid content. The present invention provides an electrode slurry that allows an improved surface smoothness (coating uniformity) of an electrode and an improved coating property, a process for producing the electrode slurry, an electrode, a process for producing the electrode, a non-aqueous secondary battery, and a lithium-ion secondary battery.
    Type: Application
    Filed: January 10, 2018
    Publication date: October 31, 2019
    Applicants: DAICEL CORPORATION, DAICEL FINECHEM LTD.
    Inventors: Masao IWAYA, Shinya ONO, Naoki DOI
  • Publication number: 20190112417
    Abstract: Provided are a novel organic polymer useful for forming an organic semiconductor and a use of the novel organic polymer. A compound represented by the following formula (Ia) is subjected to a coupling reaction to give an organic polymer: wherein a ring A and a ring B represent an aromatic hydrocarbon ring or an aromatic heterocyclic ring, n denotes an integer of 0 or 1 to 6, R1 to R2+n represent a substituent (such as an alkyl group), a1 to a (2+n) denote an integer of 0 to 2, a ring C represents a benzene ring ortho-fused sequentially and nonlinearly to an adjacent benzene ring depending on the number of n, X represents a hydrogen atom, a halogen atom, a lithium atom, or —MgX1 (wherein X1 represents a halogen atom).
    Type: Application
    Filed: March 24, 2017
    Publication date: April 18, 2019
    Applicants: THE UNIVERSITY OF TOKYO, DAICEL CORPORATION
    Inventors: Toshihiro OKAMOTO, Junichi TAKEYA, Daiji IKEDA, Masao IWAYA
  • Publication number: 20190036094
    Abstract: The present invention provides a secondary battery including a separator which is better in heat resistance than conventional polyolefin-based separators for secondary batteries so that safety can be improved, and which has a low electric resistance while maintaining insulation. It is also an object of the present invention to provide a secondary battery that is excellent in wettability for electrolytic solution, and excellent in productivity in an assembling step of the secondary battery.
    Type: Application
    Filed: November 30, 2016
    Publication date: January 31, 2019
    Applicant: DAICEL CORPORATION
    Inventors: Yo YAMATO, Masao IWAYA
  • Publication number: 20180187059
    Abstract: Used as a heat transport medium to be transported with a fluid that is liquid in an operating temperature range is a medium in which a latent heat storage material is penetrated in a porous material, wherein the latent heat storage material is incompatible with the fluid and has a melting point within the operating temperature range, and the porous material has a liquid repellency to the fluid, an affinity for the latent heat storage material, and a sponge hardness of not more than 50. This achieves stable heat transport with a high heat conversion efficiency even by circulating the medium through a pipeline over a long period of time. The porous material may have continuous pores. The porous material may have a void ratio of not less than 50%. The porous material has an apparent density of about 0.05 to 0.5 g/cm3. The ratio of the latent heat storage material is about 100 to 5000 parts by weight relative to 100 parts by weight of the porous material.
    Type: Application
    Filed: June 13, 2016
    Publication date: July 5, 2018
    Applicant: Daicel Corporation
    Inventors: Masao IWAYA, Tomoya MIZUTA, Naotaka NISHIO, Yutaka ISOBE, Masatake KUDOH, Masanori YOSHIKANE
  • Patent number: 9406975
    Abstract: An alkali metal-sulfur-based secondary battery, in which coulombic efficiency is improved by suppressing a side reaction during charge, and a reduction in discharge capacity by repetition of charge and discharge is suppressed and which has a long battery life and an improved input/output density, includes a positive electrode or a negative electrode containing a sulfur-based electrode active material; an electrolyte solution containing an ether compound such as THF and glyme and a solvent such as a fluorine-based solvent, wherein at least a part of the ether compound and the alkali metal salt forms a complex; and a counter electrode.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: August 2, 2016
    Assignee: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
    Inventors: Masayoshi Watanabe, Kaoru Dokko, Naoki Tachikawa, Mizuho Tsuchiya, Kazuhide Ueno, Azusa Yamazaki, Kazuki Yoshida, Ryuji Harimoto, Risa Nozawa, Toshihiko Mandai, Ce Zhang, Jun-Woo Park, Yu Onozaki, Masao Iwaya
  • Patent number: 9236636
    Abstract: A non-aqueous electrolyte solution for secondary batteries, comprising a lithium salt (total number of moles of lithium atoms: NLi) and a liquid composition, wherein the liquid composition comprises a specific fluorinated solvent (?) and a cyclic carboxylic acid ester compound (total number of moles: NA), and may contain a specific compound (?) (total number of moles: NB), the content of the fluorinated solvent (?) is from 40 to 80 mass %, NA/NLi is from 1.5 to 7.0, and (NA+NB)/NLi is from 3 to 7.0; and, a lithium ion secondary battery employing such a non-aqueous electrolyte solution for secondary batteries.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: January 12, 2016
    Assignee: Asahi Glass Company, Limited
    Inventors: Yu Onozaki, Toyokazu Enta, Masao Iwaya
  • Patent number: 9214665
    Abstract: To provide a positive electrode material mixture for a non-aqueous secondary battery, which is less likely to be gelled and has a good applicability to a current collector, and is capable of producing a battery capable of sufficiently exhibiting practical performance. A positive electrode material mixture which comprises a cathode active material, a binder containing a fluorinated copolymer having polymerized units derived from tetrafluoroethylene and polymerized units derived from propylene, and an aqueous medium, wherein the cathode active material is that the pH of a supernatant obtained by mixing the cathode active material with water is at least 10, and a positive electrode and a secondary battery, obtainable by employing it.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: December 15, 2015
    Assignee: Asahi Glass Company, Limited
    Inventors: Takehiro Kose, Mitsuru Seki, Masao Iwaya
  • Publication number: 20150171476
    Abstract: To provide a non-aqueous electrolyte solution for secondary batteries, which has a low reactivity with a positive electrode and a negative electrode and which is excellent in stability to prevent thermal runaway of a secondary battery and excellent also in battery properties such as cycle properties and rate properties, and a lithium ion secondary battery employing such a non-aqueous electrolyte solution. A non-aqueous electrolyte solution for secondary batteries, comprising a lithium salt composed of a specific complex such as lithium difluoro(oxalato)borate, a fluorinated solvent (A) containing at least one member selected from the group consisting of a fluorinated ether compound, a fluorinated chain carboxylic acid ester compound and a fluorinated chain carbonate compound, and a cyclic carboxylic acid ester compound (B); and a lithium ion secondary battery employing such a non-aqueous electrolyte solution.
    Type: Application
    Filed: February 25, 2015
    Publication date: June 18, 2015
    Applicant: Asahi Glass Company, Limited
    Inventors: Yu ONOZAKI, Masao IWAYA
  • Publication number: 20150072248
    Abstract: An alkali metal-sulfur-based secondary battery, in which coulombic efficiency is improved by suppressing a side reaction during charge, and a reduction in discharge capacity by repetition of charge and discharge is suppressed and which has a long battery life and an improved input/output density, includes a positive electrode or a negative electrode containing a sulfur-based electrode active material; an electrolyte solution containing an ether compound such as THF and glyme and a solvent such as a fluorine-based solvent, wherein at least a part of the ether compound and the alkali metal salt forms a complex; and a counter electrode.
    Type: Application
    Filed: March 18, 2013
    Publication date: March 12, 2015
    Applicant: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
    Inventors: Masayoshi Watanabe, Kaoru Dokko, Naoki Tachikawa, Mizuho Tsuchiya, Kazuhide Ueno, Azusa Yamazaki, Kazuki Yoshida, Ryuji Harimoto, Risa Nozawa, Toshihiko Mandai, Ce Zhang, Jun-Woo Park, Yu Onozaki, Masao Iwaya