公开(公告)号：US20190322588A1

公开(公告)日：2019-10-24

申请号：US16467624

申请日：2017-12-07

Applicant: KOA CORPORATION ,  JFE MINERAL COMPANY, LTD.

Inventor： Yoji GOMI ,  Kenichi IGUCHI ,  Etsurou UDAGAWA ,  Yuko ECHIZENYA ,  Yoshimi NAKATA

IPC: C04B35/453 ,  C01G9/02 ,  H01C7/12

Abstract: Focus is on zinc oxide itself, which is a base material for a zinc oxide varistor (laminated varistor), wherein specified quantities of additives are added to a zinc oxide powder having a crystallite size of 20 to 50 nm, grain diameter of 15 to 60 nm found using the specific surface area BET method, untamped density of 0.38 to 0.50 g/cm3, and tap density of 0.50 to 1.00 g/cm3. This allows securing of uniformity, high compactness, and high electrical conductivity of a zinc oxide sintered body, and provision of a zinc oxide varistor having high surge resistance.

公开(公告)号：US20190186044A1

公开(公告)日：2019-06-20

申请号：US16067923

申请日：2016-12-21

Applicant: JFE MINERAL COMPANY, LTD

Inventor： Yosuke IWASAKI ,  Keiichiro NAKAMURA

IPC: C30B29/40 ,  H01L21/02 ,  H01L29/20

Abstract: Provided is an aluminum nitride single crystal which is easier to cut than conventional ones. The presently disclosed aluminum nitride single crystal 1 has a matrix region M constituting a matrix of the aluminum nitride single crystal, and at least one domain region D included in the matrix region M.

公开(公告)号：US20180318343A1

公开(公告)日：2018-11-08

申请号：US15735640

申请日：2016-06-10

Applicant: JFE MINERAL COMPANY, LTD.

Inventor： Etsurou UDAGAWA ,  Yuko ECHIZENYA ,  Chisaki MIURA ,  Yoshimi NAKATA ,  Osamu YAMAMOTO

IPC: A61K33/30 ,  A61K9/70 ,  A61K8/27 ,  A61L15/22 ,  A61P17/02 ,  A61Q19/00

CPC classification number: A61K33/30 ,  A61K8/27 ,  A61K9/70 ,  A61K9/7007 ,  A61L15/22 ,  A61P17/02 ,  A61Q19/00

Abstract: Provided is a therapeutic agent for skin wounds or rough skin that includes at least one selected from the group consisting of zinc sulfate, zinc chloride, zinc carbonate, zinc hydroxide, and zinc oxide, may include a pharmaceutically acceptable carrier, and is effective in regenerating tissue.

公开(公告)号：US12281020B2

公开(公告)日：2025-04-22

申请号：US17049443

申请日：2019-04-24

Applicant: JFE MINERAL COMPANY, LTD.

Inventor： Hidefumi Konnai

IPC: C01B33/40 ,  B82Y40/00

Abstract: Provided are a novel metahalloysite powder and a production method thereof, which are not present in the prior art. The metahalloysite powder is a powder which comprises granules of aggregated metahalloysite comprising metahalloysite nanotubes, which are tube-shaped metahalloysite. The production method comprises a step of preparing a halloysite slurry which comprises halloysite nanotubes, a step for formulating a powder from the slurry, and a step for firing the formulated powder at a firing temperature of 500° C. or above.

公开(公告)号：US20230356189A1

公开(公告)日：2023-11-09

申请号：US17802182

申请日：2021-02-26

Applicant: JFE MINERAL COMPANY, LTD.

Inventor： Hidefumi Konnai ,  Takahiro Takei

IPC: B01J21/10 ,  B01J21/16 ,  B01J23/04 ,  B01J23/755 ,  B01J23/46 ,  B01J23/75 ,  B01J23/52 ,  B01J35/00 ,  B01J35/02 ,  B82Y35/00 ,  B82Y40/00

CPC classification number: B01J21/10 ,  B01J21/16 ,  B01J23/04 ,  B01J23/755 ,  B01J23/462 ,  B01J23/75 ,  B01J23/52 ,  B01J35/0006 ,  B01J35/026 ,  B82Y35/00 ,  B82Y40/00

Abstract: Provided is a composite body that includes halloysite powder including a granule in which halloysite including a halloysite nanotube is aggregated, and a transition metal catalyst carried in the halloysite powder. The granule preferably includes a first pore derived from a tube hole of the halloysite nanotube, and a second pore different from the first pore. The transition metal catalyst preferably includes at least one element selected from the group consisting of iron, ruthenium, cobalt, nickel and silver.

公开(公告)号：US11370671B2

公开(公告)日：2022-06-28

申请号：US15734863

申请日：2019-06-04

Applicant: KOA CORPORATION ,  JFE MINERAL COMPANY, LTD.

Inventor： Naomi Ishida ,  Yoji Gomi ,  Kenichi Iguchi ,  Etsurou Udagawa ,  Yuko Echizenya ,  Yoshimi Nakata

IPC: H01B1/08 ,  C01G9/02 ,  H01C7/12 ,  C01G9/00 ,  H01C7/112 ,  B82Y40/00

Abstract: Focusing on zinc oxide itself, which is a main raw material for a zinc oxide varistor (laminated varistor), a predetermined amount of additive is added to a zinc oxide powder having crystallite size of 20 to 100 nm, particle diameter of 20 to 110 nm found using a specific area BET method, untamped density of 0.60 g/cm3 or greater, and tap density of 0.80 g/cm3 or greater. This allows a zinc oxide sintered body to secure uniformity, high density, and high electric conductivity, resulting in a zinc oxide varistor with high surge resistance, capable of downsizing and cost reduction. Moreover, addition of aluminum (Al), as a donor element, to the zinc oxide powder allows control of sintered grain size in conformity with the aluminum added amount and baking temperature, and also allows adjustment of varistor voltage, etc.

公开(公告)号：US20200062603A1

公开(公告)日：2020-02-27

申请号：US16344650

申请日：2017-10-24

Applicant: JFE MINERAL COMPANY, LTD.

Inventor： Hidefumi KONNAI ,  Takayuki FUJITA

IPC: C01B33/40

Abstract: Provided are a halloysite powder having a novel granular structure not available in the prior art and a method for producing the halloysite powder. The halloysite powder contains granules in which halloysite including halloysite nanotubes is aggregated. The granules have first pores derived from the tube holes in the halloysite nanotubes and second pores that are different from the first pores.

公开(公告)号：US20190270646A1

公开(公告)日：2019-09-05

申请号：US16344955

申请日：2017-10-25

Applicant: JFE MINERAL COMPANY, LTD.

Inventor： Hidefumi KONNAI ,  Shogo SHIMAZU

IPC: C01B33/26 ,  C07D307/46 ,  C07H3/02 ,  B01J21/16 ,  B01J35/02

Abstract: Disclosed is a novel solid catalyst having high catalytic activity, a method for producing the solid catalyst, and a catalytic reaction using the solid catalyst. A disclosed surface-modified halloysite is a halloysite having a carboxy group-containing group or a sulfo group-containing group on the surface thereof.

公开(公告)号：US20230191481A1

公开(公告)日：2023-06-22

申请号：US18008291

申请日：2021-04-20

Applicant: JFE MINERAL COMPANY, LTD.

Inventor： Kensuke MATSUKI ,  Hiroshi YAMANE ,  Daiki FUKUDOME

IPC: B22F3/02 ,  B22F1/05 ,  B22F1/103 ,  B22F9/28 ,  C22C38/34 ,  C22C38/00 ,  C22C33/02 ,  C23C16/448 ,  C23C16/56 ,  C23C16/08 ,  H01F1/147

CPC classification number: B22F3/02 ,  B22F1/05 ,  B22F1/103 ,  B22F9/28 ,  C22C38/34 ,  C22C38/004 ,  C22C38/002 ,  C22C33/02 ,  C23C16/448 ,  C23C16/56 ,  C23C16/08 ,  H01F1/14766 ,  C22C2202/02 ,  B22F2301/35 ,  H01F27/255

Abstract: A metal powder capable of producing a dust core having a high saturation magnetic flux density, excellent rust resistance, and a low iron loss. The metal powder includes from 1.0% to 15.0% of Si, from 1.0% to 13.0% of Cr, from 10 ppm to 10000 ppm of Cl, from 100 ppm to 10000 ppm of S (sulfur), and from 0.2% to 7.0% of O (oxygen) by mass concentration, the remainder including Fe and unavoidable impurities, in which the average particle diameter of the metal powder is from 0.1 μm to 2.0 μm. This facilitates the production of a dust core having a high magnetic flux density, excellent rust resistance, and a low iron loss.

公开(公告)号：US20220280686A1

公开(公告)日：2022-09-08

申请号：US17628313

申请日：2020-07-10

Applicant: JFE MINERAL COMPANY, LTD.

Inventor： Yoshimi Nakata ,  Etsurou Udagawa ,  Osamu Yamamoto

IPC: A61L27/04 ,  A61L27/16

Abstract: Provided is a bone regenerative agent which can repair a bone defect site with preventing from remaining at the bone defect site. The bone regenerative agent comprises zinc subcarbonate containing hydrozincite. It is preferred that the zinc subcarbonate has a Zn2+ ion elution amount of 0.1 ppm by mass or more after an elution test and also has a pH value of 7.2 or more and less than 8.3 after an elution test. It is preferred that some carbonate ions in the hydrozincite are substituted by sulfate ions or chloride ions. It is preferred that the bone regenerative agent is applied to a bone defect site.