公开(公告)号：US12207654B2

公开(公告)日：2025-01-28

申请号：US17594373

申请日：2020-04-20

Applicant: Kureha Corporation

Inventor： Hideaki Tateishi ,  Erina Kimura ,  Tatsuyuki Koshiyama ,  Mayumi Ishikawa

IPC: A01N43/653 ,  A01N43/50 ,  A01P3/00

Abstract: Provided is an agricultural or horticultural fungicide that has low toxicity to humans and animals, that is excellent in handling safety, and that has an excellent controlling effect against a wide range of plant diseases and a high antimicrobial action against plant disease fungi.
The agricultural or horticultural fungicide of the present invention includes, as an active ingredient, an azole derivative represented by the following general formula (I) and other active ingredients.

公开(公告)号：US20250002622A1

公开(公告)日：2025-01-02

申请号：US18697184

申请日：2022-09-29

Applicant: Kureha Corporation

Inventor： Nozomu ODAGAWA ,  Yoshiyuki NAGASAWA

IPC: C08F214/22

Abstract: A vinylidene fluoride polymer solution in which a vinylidene fluoride polymer is dissolved in a solvent that has a lower environmental impact and is easy to handle. The vinylidene fluoride polymer solution contains a vinylidene fluoride polymer and a solvent. The solvent includes an affinity solvent having a molecular weight of 100 or more and containing at least one structure selected from ethers, ketones, and esters, and the vinylidene fluoride polymer satisfies some specific requirements.

公开(公告)号：US12110758B2

公开(公告)日：2024-10-08

申请号：US18547246

申请日：2022-02-24

Applicant: Kureha Corporation

Inventor： Shinnosuke Yoshida ,  Shinya Takahashi

IPC: E21B33/129 ,  E21B33/126 ,  E21B33/128

CPC classification number: E21B33/1285 ,  E21B33/1265 ,  E21B33/129

Abstract: A downhole tool securing device and a frac plug which are excellent in setting properties and water pressure resistance and have excellent fracturing properties. A downhole tool securing device (slips) of a frac plug according to one embodiment of the present invention includes a button containing a powder metallurgy material and having a compressive elastic modulus of at least 13.5 GPa and a toughness of 0.23 GJ/m3 or greater and 1.0 GJ/m3 or less.

公开(公告)号：US20240322179A1

公开(公告)日：2024-09-26

申请号：US18262675

申请日：2022-01-25

Applicant: Kureha Corporation

Inventor： Haruki SAITO ,  Kayoko OKADA ,  Yasufumi IKEYAMA ,  Masataka KATONO

IPC: H01M4/62 ,  C08F14/22 ,  C08K5/12 ,  C08K5/134 ,  C08K5/1515 ,  C08K5/524 ,  H01M4/13

CPC classification number: H01M4/623 ,  C08F14/22 ,  C08K5/12 ,  C08K5/134 ,  C08K5/1515 ,  C08K5/524 ,  H01M4/13

Abstract: An object of the present application is to provide a binder for a non-aqueous electrolyte secondary battery having high adhesiveness to an active material and/or a current collector and also having high flexibility capable of withstanding bending in an electrode having a highly densified mixture layer. A binder for a non-aqueous electrolyte secondary battery, which achieves the object, contains: a vinylidene fluoride polymer having a vinylidene fluoride-derived structural unit as a main constituent component; and an additive having a specific structure, and a mass ratio of the vinylidene fluoride polymer to the additive is from 99/1 to 60/40:

公开(公告)号：US20240279847A1

公开(公告)日：2024-08-22

申请号：US18566864

申请日：2022-05-20

Applicant: KUREHA CORPORATION

Inventor： Haruki MOKUDAI ,  Wataru FURUKAWA ,  Takashi MASAKI ,  Yoshinori SUZUKI

IPC: D01F6/60 ,  D01D5/088

CPC classification number: D01F6/60 ,  D01D5/0885 ,  D10B2331/02 ,  D10B2401/063 ,  D10B2507/00

Abstract: To provide a monofilament of PA4, which has a low density. The monofilament of polyamide 4 in an embodiment of the present invention has a density of 1.230 g/cm3 or less. A method for producing a monofilament of polyamide 4 according to an embodiment of the present invention includes: melt-extruding polyamide 4; and cooling a melted and extruded matter of the polyamide 4 obtained by the melt-extruding process, at −10° ° C. or lower by using a nonpolar solvent.

公开(公告)号：US20240271331A1

公开(公告)日：2024-08-15

申请号：US18566847

申请日：2022-05-20

Applicant: Kureha Corporation

Inventor： Haruki MOKUDAI ,  Wataru FURUKAWA ,  Takashi MASAKI ,  Yoshinori SUZUKI

IPC: D01F6/60

CPC classification number: D01F6/60

Abstract: To provide a monofilament of polyamide 4 (PA4) having high tensile characteristics even when the monofilament is knotted. A monofilament of PA4, in a scattering vector in a range of 0.02 nm−1 or greater and 0.04 nm−1 or less measured by small-angle X-ray scattering, the monofilament having an average value of a ratio I2/I1 of a normalized scattering intensity I2 in an equatorial direction to a normalized scattering intensity I1 in a meridian direction of 5 or less. A birefringence of the monofilament is 50×10−3 or greater.

公开(公告)号：US12044094B2

公开(公告)日：2024-07-23

申请号：US18247816

申请日：2021-10-11

Applicant: KUREHA CORPORATION

Inventor： Takuma Kobayashi

IPC: E21B33/12 ,  E21B33/134

CPC classification number: E21B33/12 ,  E21B33/134

Abstract: A plug that can maintain isolation also in a high-temperature and low salt concentration fluid or water only for a predetermined period of time is provided. A plug for temporarily preventing circulation of a fluid in a well includes or composed of a resin molded article, the resin molded article being formed from a polyglycolic acid resin composition containing a polyglycolic acid and a cyclic carbodiimide compound and having a carbodiimide group concentration of 15 eq/t or greater.

公开(公告)号：US20240166847A1

公开(公告)日：2024-05-23

申请号：US18552360

申请日：2022-02-16

Applicant: Kureha Corporation

Inventor： Motoharu SHODA ,  Fuminori KOBAYASHI ,  Takenori TOSE ,  Yoshinori SUZUKI

IPC: C08K5/1539 ,  C08G63/664 ,  C08G65/332 ,  C08G77/46

CPC classification number: C08K5/1539 ,  C08G63/664 ,  C08G65/3322 ,  C08G77/46 ,  C08G2230/00 ,  C08G2650/24 ,  C08G2650/58

Abstract: To provide a glycolic acid copolymer composition that can be solidification- and extrusion-molded and that improves rate of decrease in thickness of the molded article during degradation. The glycolic acid copolymer composition according to an embodiment of the present invention includes a glycolic acid copolymer and a carboxylic anhydride, the glycolic acid copolymer including two or more straight macromolecular chains A, each containing a repeating unit derived from glycolic acid and being chemically bonded to a particular macromolecular chain B that is different from the macromolecular chain A, and a weight average molecular weight of the composition is 150000 or greater.

公开(公告)号：US20240120492A1

公开(公告)日：2024-04-11

申请号：US18546202

申请日：2022-02-14

Applicant: Kureha Corporation

Inventor： Aya SHIKE ,  Yoshiyuki NAGASAWA ,  Tamito IGARASHI

IPC: H01M4/62 ,  C08F214/22 ,  C08L27/16 ,  H01M4/13 ,  H01M10/0562

CPC classification number: H01M4/623 ,  C08F214/22 ,  C08L27/16 ,  H01M4/13 ,  H01M10/0562 ,  C08L2201/56 ,  C08L2203/20 ,  H01M2300/008

Abstract: Provided are a binder solution, an electrode mixture, an electrode, and an all-solid-state battery, which use an organic solvent having low reactivity with a solid electrolyte and in which a binder easily dissolves. The binder solution for an all-solid-state battery contains: a binder made of a vinylidene fluoride polymer; and an organic solvent. The organic solvent is at least one selected from the group consisting of a cyclic ether, a ketone, and an ester. The organic solvent has a boiling point of 60° C. or higher and 160° C. or lower. A residual moisture content of the organic solvent is 300 ppm or less.

公开(公告)号：US20240049723A1

公开(公告)日：2024-02-15

申请号：US18260434

申请日：2022-01-06

Applicant: Kureha Corporation

Inventor： Tatsuyuki KOSHIYAMA ,  Mutsumi KANEKO ,  Yukihiro HIGASHIYAMA

IPC: A01N63/32 ,  A01N43/50 ,  A01P21/00

CPC classification number: A01N63/32 ,  A01N43/50 ,  A01P21/00

Abstract: The plant growth regulator according to an embodiment of the present invention contains an extract of an ergothioneine-producing microorganism as an active ingredient. The extract contains ergothioneine.