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公开(公告)号：US20190055077A1
公开(公告)日：2019-02-21
申请号：US16078139
申请日：2017-02-17
发明人： Toru IMORI , Koichi TAKEMOTO , Hideaki FUKUYO , Shiro TSUKAMOTO , Takahiro UCHIDA , Masatomi MURAKAMI
摘要： Provided is a high-purity tin product that does not contain undesirable carbonaceous impurities as a result of the following: a vacuum-packed high-purity metal article (vacuum-packed high-purity tin article) is obtained by vacuum packaging a high-purity metal (high-purity tin), at least a portion of a surface of a high-purity metal being covered with a fluorocarbon resin sheet; and the vacuum-packed high-purity metal article(vacuum-packed high-purity tin article) is obtained by vacuum packaging, with a vacuum packaging film, the high-purity metal in which at least a portion of a surface is covered with the fluorocarbon resin sheet.
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公开(公告)号：US20210047198A1
公开(公告)日：2021-02-18
申请号：US16978439
申请日：2018-12-06
发明人： Koichi TAKEMOTO , Toru IMORI
摘要： The purpose of the present invention is to provide a stannous oxide, which has excellent solubility and resistance to oxidation, from a stannous oxide powder comprising a stannous oxide and inevitable impurities, the stannous oxide powder having a stannous oxide content of 99.99 mass % or more in dry mass, a specific surface area of less than 0.5 m2/g, a D50 particle size of 20 to 60 μm, and a half width of the particle size distribution of 5 to 30 μm.
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公开(公告)号：US20210381082A1
公开(公告)日：2021-12-09
申请号：US17287205
申请日：2020-02-27
发明人： Takahiro UCHIDA , Toru IMORI , Koichi TAKEMOTO , Shiro TSUKAMOTO
摘要： In the present invention, a high-purity metallic tin suitable for use in an EUV exposure device is provided through use of an oxidation-resistant metallic tin, the oxidation-resistant metallic tin containing 99.995 mass % or more of tin, and unavoidable impurities, and the thickness of an oxide film being 2.0 nm or less when the surface of a cut face of the oxidation-resistant metallic tin is measured by AES.
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公开(公告)号：US20190338431A1
公开(公告)日：2019-11-07
申请号：US16514554
申请日：2019-07-17
发明人： Toru IMORI , Kouichi TAKEMOTO
摘要： Provided is a high purity tin (Sn) having an extremely low oxygen content. A high purity tin having a tin purity of 5N (99.999% by mass, provided that carbon, nitrogen, oxygen and hydrogen are excluded) or more, wherein the high purity tin has an oxygen content of less than 10 ppb by mass, as measured by elemental analysis using Dynamic-SIMS.
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公开(公告)号：US20210359482A1
公开(公告)日：2021-11-18
申请号：US17288403
申请日：2020-01-06
发明人： Masahiro TAKAHATA , Hideaki FUKUYO , Toru IMORI , Koichi TAKEMOTO
IPC分类号： H01S3/038
摘要： A copper electrode material comprising Cu and unavoidable impurities, wherein the content of the unavoidable impurities is 1 ppm by mass or less and the average crystal grain diameter is 100 μm or less. A copper-containing electrode material having improved corrosion resistance is provided by the copper electrode material.
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公开(公告)号：US20200231461A1
公开(公告)日：2020-07-23
申请号：US16652609
申请日：2018-09-13
发明人： Koichi TAKEMOTO , Toru IMORI
IPC分类号： C01G19/02
摘要： Provided is a method for producing stannous oxide, comprising a step of subjecting stannous sulfate to neutralization in an aqueous solution using ammonium carbonate or ammonium bicarbonate, and thereby precipitating stannous oxide. This production method is a novel means for producing stannous oxide in which chlorine, sulfur, sodium, and potassium are sufficiently reduced, and which has excellent solubility.
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公开(公告)号：US20190153607A1
公开(公告)日：2019-05-23
申请号：US15775731
申请日：2017-03-02
发明人： Toru IMORI , Koichi TAKEMOTO
摘要： Provided is high purity tin having purity of 5N (99.999% by mass), which can suppress generation of particles. According to the high purity tin, the number of particles each having a particle diameter of 0.5 μm or more is 50,000 or less per a gram.
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