Patents by Inventor Akio Mitsui

Akio Mitsui 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: 20240234680
    Abstract: An all-solid-state battery has a positive electrode layer, a separator layer and a negative electrode layer. The all-solid-state battery satisfies relationships of “Formula (1): 0.99?Sa0/Sc0?1.01,” “Formula (2): 1.00?Sa1/Sa0?1.13,” and “Formula (3): 0.93?Sc1/Sc0?1.02.” Sc0 indicates an area of the positive electrode layer when the SOC is 0%. Sc1 indicates an area of the positive electrode layer when the SOC is 100%. Sa0 indicates an area of the negative electrode layer when the SOC is 0%. Sa1 indicates an area of the negative electrode layer when the SOC is 100%.
    Type: Application
    Filed: October 6, 2023
    Publication date: July 11, 2024
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, PANASONIC HOLDINGS CORPORATION
    Inventors: Akio MITSUI, Kazuhiro MORIOKA, Koichi HIRANO
  • Publication number: 20240170638
    Abstract: A method of manufacturing a solid-state battery, the method including: over-discharging the solid-state battery having a solid sulfide electrolyte layer.
    Type: Application
    Filed: November 17, 2023
    Publication date: May 23, 2024
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, Panasonic Holdings Corporation
    Inventors: Akio MITSUI, Kenji NAGAO, Izuru SASAKI
  • Publication number: 20240136498
    Abstract: An all-solid-state battery has a positive electrode layer, a separator layer and a negative electrode layer. The all-solid-state battery satisfies relationships of “Formula (1): 0.99?Sa0/Sc0?1.01,” “Formula (2): 1.00?Sa1/Sa0?1.13,” and “Formula (3): 0.93?Sc1/Sc0?1.02.” Sc0 indicates an area of the positive electrode layer when the SOC is 0%. Sc1 indicates an area of the positive electrode layer when the SOC is 100%. Sa0 indicates an area of the negative electrode layer when the SOC is 0%. Sa1 indicates an area of the negative electrode layer when the SOC is 100%.
    Type: Application
    Filed: October 5, 2023
    Publication date: April 25, 2024
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, PANASONIC HOLDINGS CORPORATION
    Inventors: Akio MITSUI, Kazuhiro MORIOKA, Koichi HIRANO
  • Publication number: 20230253558
    Abstract: There is provided a negative electrode layer that is used in an all-solid state battery, containing lithium titanate and a sulfide solid electrolyte, in which a moisture amount contained in the lithium titanate is 25 ppm or more and 547 ppm or less.
    Type: Application
    Filed: February 3, 2023
    Publication date: August 10, 2023
    Inventors: Akio MITSUI, Yasunari SUGITA, Takaaki TAMURA, Shinichirou OOTANI
  • Publication number: 20230231122
    Abstract: There is provided an electrode layer for an all-solid state battery, which contains an electrode active material and a sulfide solid electrolyte, where the sulfide solid electrolyte has an average particle diameter of less than 1 µm and the electrode layer contains an imidazoline-based dispersion material.
    Type: Application
    Filed: October 28, 2022
    Publication date: July 20, 2023
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Akio MITSUI, Yasunari SUGITA, Kenji NAGAO, Izuru SASAKI, Yasutaka TSUTSUI, Takaaki TAMURA, Hiroki KAMITAKE
  • Publication number: 20230231136
    Abstract: An electrode layer for an all-solid state battery contains an electrode active material, a sulfide solid electrolyte, and a residual liquid, where the residual liquid has a ?P of less than 2.9 MPa½ in a Hansen solubility parameter and a boiling point of 190° C. or higher.
    Type: Application
    Filed: November 2, 2022
    Publication date: July 20, 2023
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, Panasonic Holdings Corporation
    Inventors: Akio MITSUI, Yasunari SUGITA, Yasutaka TSUTSUI
  • Publication number: 20230207777
    Abstract: A negative electrode layer that is used for an all-solid-state battery includes: lithium titanate; a sulfide solid electrolyte; and a rubber binder. The ratio of the amount A of the rubber binder adsorbed on the lithium titanate to the total content B of the rubber binder in the negative electrode layer is 1.35% or less.
    Type: Application
    Filed: October 11, 2022
    Publication date: June 29, 2023
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, PANASONIC HOLDINGS CORPORATION
    Inventors: Akio MITSUI, Aiko NAGANO, Yasunari SUGITA, Takaaki TAMURA, Yasutaka TSUTSUI
  • Publication number: 20220320512
    Abstract: A main object of the present disclosure is to provide an all solid state battery with low battery resistance. The present disclosure achieves the object by providing an all solid state battery including a cathode layer, an anode layer, a solid electrolyte layer formed between the cathode layer and the anode layer; wherein the anode layer contains a lithium titanate that is an anode active material, and a solid electrolyte; a proportion of the anode active material with respect to a total of the anode active material and the solid electrolyte is 40 volume % or more and 80 volume % or less; and the anode layer does not contain a conductive material.
    Type: Application
    Filed: March 16, 2022
    Publication date: October 6, 2022
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Akio Mitsui
  • Publication number: 20220263095
    Abstract: Provided is a ferritic stainless steel sheet for current collectors for sulfide-based solid-state batteries, which has excellent sulfidation resistance and adhesiveness. The ferritic stainless steel sheet has a component composition containing Cr in an amount of 16% by mass or more, wherein the surface of the ferritic stainless steel sheet has an uneven structure having recessed portions and projecting portions, the average height of the projecting portions is 20 to 50 nm inclusive, the average distance between the projecting portions is 20 to 200 nm inclusive, and the [Cr]/[Fe], i.e., the ratio of the atom concentration of Cr that is present in a form other than the metal form to the atom concentration of Fe that is present in a form other than the metal form, on the surface of the ferritic stainless steel sheet is 1.0 or more.
    Type: Application
    Filed: June 29, 2020
    Publication date: August 18, 2022
    Applicants: JFE STEEL CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takayoshi YANO, Shin ISHIKAWA, Akio MITSUI
  • Publication number: 20220243309
    Abstract: A ferritic stainless steel sheet for collectors of sulfide-based solid-state batteries has excellent sulfurization resistance. This ferritic stainless steel sheet has a component composition which contains, in mass %, from 0.001% to 0.050% of C, from 0.01% to 2.00% of Si, from 0.01% to 1.00% of Mn, 0.050% or less of P, 0.010% or less of S, from 18.00% to 32.00% of Cr, from 0.01% to 4.00% of Ni, from 0.001% to 0.150% of Al and 0.050% or less of N, with the balance being made up of Fe and unavoidable impurities.
    Type: Application
    Filed: June 29, 2020
    Publication date: August 4, 2022
    Applicants: JFE STEEL CORPORATION, TOYOTA MOTOR CORPORATION
    Inventors: Takayoshi YANO, Shin ISHIKAWA, Akio MITSUI
  • Patent number: 6106991
    Abstract: There is disclosed a photographic element which contains, in a binder on a base, a specified compound having a group that is capable of causing chemical reaction with a reactive group contained in the binder, to form a covalent bond. According to the photographic element, a color image excellent in light-fastness can be obtained.
    Type: Grant
    Filed: September 20, 1999
    Date of Patent: August 22, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toshiki Taguchi, Takeshi Shibata, Nobuo Seto, Hideaki Naruse, Akio Mitsui
  • Patent number: 5484692
    Abstract: A silver halide photographic material comprising a support having provided thereon at least one layer, wherein said at least one layer contains at least one compound which is represented by the following formula (1) and is liquid at 25.degree. C.: ##STR1## wherein R.sub.1 and R.sub.2, which may be the same or different, each represents a hydrogen atom, an unsubstituted unsaturated straight-chain aliphatic group, or an unsubstituted branched alkyl group; provided that both R.sub.1 and R.sub.2 must not be hydrogen atoms and that the sum of the carbon atoms in R.sub.1 and R.sub.2 is 18 or more.
    Type: Grant
    Filed: August 24, 1994
    Date of Patent: January 16, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akio Mitsui, Hiroo Takizawa
  • Patent number: 5356759
    Abstract: A color reversal image forming process using a color reversal photographic material is disclosed. The process comprises an exposure step, a black and white development step, a reversal step, a color development step and a desilvering step. The color reversal photographic material comprises a support and one or more silver halide emulsion layers. According to one embodiment of the present invention, at least one silver halide emulsion layer comprises silver halide containing chloride of not less than 90 mole %, iodide of 0 mole % and bromide of not more than 10 mole %. According to another embodiment, at least one silver halide emulsion layer comprises silver halide containing chloride of not less than 88 mole %, iodide of 0.1 to 2 mole % and bromide of not more than 10 mole %. The silver halide emulsion layer further contains a compound represented by the formula (Ia) or (Ib): ##STR1## wherein R.sup.11 is an alkyl group, an alkenyl group, a heterocyclic group or an aryl group; X.sup.
    Type: Grant
    Filed: November 19, 1992
    Date of Patent: October 18, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akio Mitsui, Takatoshi Ishikawa
  • Patent number: 5336590
    Abstract: A silver halide color photographic photosensitive material is disclosed which comprises a transparent support on which there are provided at least one cyan color forming coupler containing layer, at least one magenta color forming coupler containing layer, and at least one yellow color forming coupler containing layer, and at least one light-insensitive layer, wherein a compound represented by formula (I), a compound represented by formula (IIa) or (IIb) or both, and an internal latent image forming silver halide grain are contained in the photographic material: ##STR1## wherein Z.sup.11 represents a group of non-metal atoms which is required to form a five or six membered heterocyclic ring, and Z.sup.11 may be substituted with substituent groups; R.sup.11 is an aliphatic group; and R.sup.12 is a hydrogen atom, an aliphatic group or an aromatic group; R.sup.11 and R.sup.12 may be substituted with substituent groups; R.sup.12 may be joined to the heterocyclic ring completed by Z.sup.
    Type: Grant
    Filed: September 28, 1992
    Date of Patent: August 9, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Akio Mitsui
  • Patent number: 5286615
    Abstract: A silver halide color photographic material comprises a support, a blue sensitive layer, a green sensitive layer and a red sensitive layer and at least one non-light-sensitive layer. The non-light-sensitive layer is an intermediate layer arranged between the silver halide emulsion layers. According to the present invention, the non-light-sensitive intermediate layer contains a compound represented by the formula (1a) or (1b): ##STR1## in which R.sup.12 is an aliphatic group, an aromatic group or a heterocyclic group; M is --CO--, --SO.sub.2 --, --N(R.sup.15)CO--, --OCO-- or --N(R.sup.15)SO.sub.2 --; each of R.sup.14, R.sup.15 and R.sup.24 independently is hydrogen, an alkyl group or an aryl group; L is a divalent linking group necessary for forming a 5, 6 or 7-membered ring; each of R.sup.11, R.sup.13 and R.sup.
    Type: Grant
    Filed: October 15, 1991
    Date of Patent: February 15, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Sadanobu Shuto, Akio Mitsui
  • Patent number: 5079132
    Abstract: A method for forming a color positive image which comprises steps of:(a) exposing a color positive type silver halide material including a support having thereon at least two silver halide emulsion layers which have different spectral sensitivity distribution from each other, to light passed through a filter having at least one absorption band where light is absorbed in a sharp width; at least one absorption peak thereof being in a wavelength of from 480 to 520 nm or from 580 to 620 nm, the optical density of the absorption peak being at least 0.8; the 3/4 value width of the absorption peak, designated as W 3/4, being at least 5 nm and the 3/4 value width of the absorption peak and the 1/4 value width of the absorption peak, designated as W 1/4, satisfying the following relation:W3/4= W1/4.ltoreq.30 nm.and(b) developing the exposed material.
    Type: Grant
    Filed: September 16, 1988
    Date of Patent: January 7, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akio Mitsui, Nobuyuki Kimura, Junichi Tamano, Mitsugi Kawakami
  • Patent number: 5079133
    Abstract: A silver halide color photographic material is provided that contains at least one pyrazoloazole type coupler represented by formula (I) ##STR1## wherein Za and Zb each represents ##STR2## or .tbd.N--, R.sub.1 and R.sub.
    Type: Grant
    Filed: July 16, 1990
    Date of Patent: January 7, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akio Mitsui, Takashi Ozawa
  • Patent number: 4965179
    Abstract: A novel silver halide color photographic material is described, comprising a support having thereon at least three silver halide emulsion layer units each having a sensitivity to each of three primary colors of blue, green and red, wherein at least one unit among said silver halide emulsion layer units comprises a layer group containing at least two layers each having a different sensitivity and at least one layer in said layer group, which satisfies the following condition (A) or (B):(A) in the case where the silver halide emulsion layer unit is a blue-sensitive or green-sensitive unit, the layer is one to take charge of coloration of a substantially highest density range on a characteristic curve; or(B) in the case where the silver halide emulsion layer unit is a red-sensitive unit, the layer is one other than a layer which is in charge of coloration of a substantially highest density range on a characteristic curve,contains at least one compound of the general formula (I): ##STR1## wherein R.sub.
    Type: Grant
    Filed: December 27, 1988
    Date of Patent: October 23, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shigeru Kuwashima, Akio Mitsui
  • Patent number: 4959298
    Abstract: A siliver halide color photographic material, comprising at least one of magenta couplers having the following general formula (I) ##STR1## wherein R.sup.1 represents a hydrogen atom or a substituent; X represents a hydrogen atom or a group that can be cleaved by the coupling reaction with the oxidation product of an aromatic primary amine developing agent; Za, Zb and Zc each represents a methine group, a substituted methine, .dbd.N--or --NH--; one of the Za--Zb bond and the Zb--Zc bond is a double bond and the other is a single bond; and Zb-Zc may be fused to an aromatic ring, the coupler may form a dimer or higher polymer via R.sup.1 or X, and when Za, Zb or Zc is a substituted methine, the coupler may form a dimer or higher polymer through the substituted methine, and at least one of compounds having the following general formula (II): ##STR2## wherein M represents a hydrogen atom, an alkali metal atom, a quaternary ammonium group or a group that can be cleaved under an alkaline condition; and R.sub.
    Type: Grant
    Filed: October 7, 1988
    Date of Patent: September 25, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akio Mitsui, Takashi Ozawa
  • Patent number: 4865963
    Abstract: A silver halide color photographic material comprising a support having thereon at least one silver halide emulsion layer, said silver halide emulsion layer containing a pyrazoloazole series magenta coupler represented by general formula [I] ##STR1## wherein, R.sup.1 and R.sup.2 each represents a hydrogen atom or a substituent; and X represents a hydrogen atom or a releasing group which is released at the reaction with the oxidation product of an aromatic primary amine developing agent; at least one of said R.sup.1 and R.sup.2 is an alkyl group having a secondary or tertiary carbon atom directly bonded to the skeleton, at least one of said R.sub.1 and R.sub.2 is a sulfonamidoalkyl group or a sulfamoylalkyl group; and the magenta coupler may form a dimer or more polymer at the position of said R.sup.1, R.sup.2 or X.By the combined use of high boiling point organic solvent and ultraviolet absorbent, light fastness and coloring property are markedly improved.
    Type: Grant
    Filed: September 30, 1986
    Date of Patent: September 12, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobuo Furutachi, Tadahisa Sato, Seiki Sakanoue, Akio Mitsui, Minoru Sakai, Masakazu Morigaki, Hidetoshi Kobayashi, Nobuo Sakai, Kiyoshi Nakazyo, Takeshi Hirose, Toshio Kawagishi