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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.
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公开(公告)号：US20210238052A1
公开(公告)日：2021-08-05
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
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.
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公开(公告)号：US20210238053A1
公开(公告)日：2021-08-05
申请号：US16972266
申请日：2019-06-05
Applicant: JFE MINERAL COMPANY, LTD.
Inventor： Yoshimi NAKATA , Etsurou UDAGAWA , Yuko ECHIZENYA
IPC: C01G9/02
Abstract: A zinc oxide powder for producing a zinc oxide sintered body is provided with which it is possible to obtain a zinc oxide sintered body that has a small sintered particle size and high strength. This zinc oxide powder for producing a zinc oxide sintered body is used for producing a zinc oxide sintered body, wherein the Al content represented in formula (I) is greater than or equal to 20 mol ppm and less than or equal to 2 mol %. (I){nAl/(nZn+nAl)}×100. In formula (I), nAl represents the Al content in the zinc oxide powder, nZn represents the Zn content in the zinc oxide powder, and the unit of nZn and nAl is moles in both cases.
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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
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.
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5.发明申请公开(公告)号：US20200078396A1
公开(公告)日：2020-03-12
申请号：US16468227
申请日：2017-12-08
Applicant: JFE MINERAL COMPANY, LTD.
Inventor： Yuko ECHIZENYA , Yoshimi NAKATA , Etsurou UDAGAWA , Osamu YAMAMOTO
Abstract: Disclosed is an inorganic composition which is useful as a base for pharmaceuticals and has excellent stability, and a method for producing the inorganic composition. The inorganic composition contains at least one compound selected from the group consisting of zinc sulfate, zinc chloride, zinc carbonate, zinc hydroxide, and zinc oxide, and has a pH of 7.2 or higher but lower than 8.3. After a dissolution test of the inorganic composition performed by a stirring method, the amount of Zn2* ions released therefrom is 0.1 pg/m2 or larger. This inorganic composition has the excellent property of gradually releasing zinc ions which makes the inorganic composition usable as a base for pharmaceuticals.
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Patent Agency Ranking
公开(公告)号：US20180311277A1
公开(公告)日：2018-11-01
申请号：US15735634
申请日：2016-06-10
Applicant: JFE MINERAL COMPANY, LTD.
Inventor： Etsurou UDAGAWA , Yuko ECHIZENYA , Chisaki MIURA , Yoshimi NAKATA , Osamu YAMAMOTO
Abstract: Provided is a low-cost, easy-to-handle, effective therapeutic agent for wounds that is a therapeutic agent for skin wounds or rough skin that includes at least one selected from the group consisting of zinc chloride, zinc hydroxide, and zinc oxide and may include a pharmaceutically acceptable carrier.
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公开(公告)号：US20210354995A1
公开(公告)日：2021-11-18
申请号：US16467799
申请日：2017-12-07
Applicant: JFE MINERAL COMPANY, LTD.
Inventor： Etsurou UDAGAWA , Yuko ECHIZENYA , Yoshimi NAKATA
IPC: C01G9/02
Abstract: The zinc oxide powder has a crystallite size of 20 to 50 nm as determined by X-ray diffraction, a particle diameter of 15 to 60 nm as determined by the BET method, a loose bulk density of 0.38 to 0.50 g/cm3, and a tapped density of 0.50 to 1.00 g/cm3. The zinc oxide powder has a small number of bound particles and a high tap density, and is useful as a raw material for obtaining a zinc oxide sintered body exhibiting high strength and low thermal conduction.
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公开(公告)号：US20210238054A1
公开(公告)日：2021-08-05
申请号：US16972268
申请日：2019-06-05
Applicant: JFE MINERAL COMPANY, LTD.
Inventor： Yoshimi NAKATA , Etsurou UDAGAWA , Yuko ECHIZENYA
IPC: C01G9/02
Abstract: A zinc oxide powder for producing a zinc oxide sintered body is provided with which it is possible to obtain a zinc oxide sintered body that has a large sintered particle size and excellent conductivity. This zinc oxide powder for producing a zinc oxide sintered body is used for producing a zinc oxide sintered body, wherein the Ga content represented in formula (I) is greater than or equal to 30 mol ppm and less than 3 mol %. (I) {nGa/(nZn+nGa)}×100 In formula (I), nGa represents the Ga content in the zinc oxide powder, nZn represents the Zn content in the zinc oxide powder, and the unit of nZn and nGa is moles in both cases.
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公开(公告)号：US20200237814A1
公开(公告)日：2020-07-30
申请号：US16851862
申请日：2020-04-17
Applicant: JFE MINERAL COMPANY, LTD.
Inventor： Etsurou UDAGAWA , Yuko ECHIZENYA , Chisaki MIURA , Yoshimi NAKATA , Osamu YAMAMOTO
Abstract: Provided is a low-cost, easy-to-handle, effective therapeutic agent for wounds that is a therapeutic agent for skin wounds or rough skin that includes at least one selected from the group consisting of zinc chloride, zinc hydroxide, and zinc oxide and may include a pharmaceutically acceptable carrier.
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10.发明申请公开(公告)号：US20200061109A1
公开(公告)日：2020-02-27
申请号：US16467852
申请日：2017-12-08
Applicant: JFE MINERAL COMPANY, LTD.
Inventor： Yoshimi NAKATA , Yuko ECHIZENYA , Etsurou UDAGAWA , Osamu YAMAMOTO
Abstract: Provided are: zinc chloride hydroxide that is useful as a pharmaceutical ingredient, has excellent zinc ion sustained-releasbility when used as a pharmaceutical agent, and exhibits excellent stability as a pharmaceutical ingredient; and a production method therefor. Disclosed is zinc chloride hydroxide that can be used as a pharmaceutical ingredient, that has excellent zinc ion sustained-releasability, that includes at least one member selected from the group consisting of zinc chloride, zinc hydroxide, and zinc oxide.
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