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公开(公告)号：US20210069782A1
公开(公告)日：2021-03-11
申请号：US16965279
申请日：2019-01-10
Applicant: NISSHIN ENGINEERING INC.
Inventor： Shu WATANABE , Shiori SUEYASU , Keitaroh NAKAMURA
Abstract: Provided are: a fine particle production method that makes it possible to control the acidity, i.e., a surface property, of fine particles; and fine particles. A fine particle production method in which a raw material powder is used to produce fine particles by means of a gas phase method. The fine particle production method has a step for supplying an organic acid to raw material fine particles. The gas phase method is, for example, a thermal plasma method or a flame method. The fine particles have a surface coating that includes at least a carboxyl group.
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公开(公告)号：US20210017391A1
公开(公告)日：2021-01-21
申请号：US16982481
申请日：2019-03-11
Applicant: NISSHIN ENGINEERING INC.
Inventor： Keitaroh NAKAMURA , Daisuke SATO
IPC: C09C1/36
Abstract: Provided are: composite particles having excellent oxidation resistance; and a method for producing composite particles. The composite particles are obtained by forming a composite of TiN and at least one of Al, Cr, and Nb. In the method for producing composite particles, a titanium powder and a powder of at least one of Al, Cr, and Nb are used as raw material powders and composite particles are produced using a gas phase method.
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公开(公告)号：US20200346286A1
公开(公告)日：2020-11-05
申请号：US16963796
申请日：2019-01-10
Applicant: NISSHIN ENGINEERING INC.
Inventor： Shu WATANABE , Shiori SUEYASU , Keitaroh NAKAMURA
IPC: B22F9/12
Abstract: Provided are: a production method for silver fine particles that retain capabilities such as conductivity and make it possible to form wiring at even lower temperatures; and silver fine particles. A silver fine particle production method in which silver powder is used to produce silver fine particles by means of a gas phase method. The silver fine particle production method has a step for supplying an organic acid to the silver fine particles. The gas phase method is, for example, a plasma method or a flame method. The silver fine particles have a surface coating that includes at least a carboxyl group.
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公开(公告)号：US10413873B2
公开(公告)日：2019-09-17
申请号：US15350627
申请日：2016-11-14
Applicant: NISSHIN ENGINEERING INC.
Inventor： Akihiko Ema , Yusuke Igawa , Kosuke Ando
Abstract: A mixing apparatus for mixing powder and liquid, includes: an apparatus main body having an internal space; a cylindrical member arranged in the internal space with one end facing upward and the other end facing downward, the one end and the other end being opened; a powder dispersing portion arranged above the apparatus main body, the powder dispersing portion dispersing the powder into a space of the cylindrical member; a liquid spraying portion arranged in a vicinity of the powder dispersing portion, the liquid spraying portion spraying the liquid into a space of the cylindrical member; a collection portion arranged below the apparatus main body, the collection portion collecting a mixed powder consisting of the powder dispersed by the powder dispersing portion and the liquid sprayed by the liquid spraying portion; a filter arranged around the cylindrical member in the internal space; and a discharge port discharging air in the internal space through the filter.
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Patent Agency Ranking
25.发明授权公开(公告)号：US10128031B2
公开(公告)日：2018-11-13
申请号：US15116103
申请日：2015-01-20
Applicant: NISSHIN SEIFUN GROUP INC. , NISSHIN ENGINEERING INC.
Inventor： Keitaroh Nakamura , Akihiro Kinoshita , Naohito Uemura
Abstract: Provided is a method for manufacturing magnetic particles, in which an oxidation treatment, a reduction treatment, and a nitriding treatment are performed in that order on raw material particles with a core-shell structure in which a silicon oxide layer is formed on the surfaces of iron microparticles, thereby nitriding the iron microparticles while maintaining the core-shell structure. Due to this configuration, granular magnetic particles with a core-shell structure in which a silicon oxide layer is formed on the surfaces of iron nitride microparticles can be obtained.
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公开(公告)号：US20180137960A1
公开(公告)日：2018-05-17
申请号：US15867143
申请日：2018-01-10
Applicant: NISSHIN SEIFUN GROUP INC. , NISSHIN ENGINEERING INC.
Inventor： Keitaroh NAKAMURA , Akihiro KINOSHITA , Naohito UEMURA
Abstract: Provided is a method for manufacturing magnetic particles, in which an oxidation treatment, a reduction treatment, and a nitriding treatment are performed in that order on raw material particles with a core-shell structure in which a silicon oxide layer is formed on the surfaces of iron microparticles, thereby nitriding the iron microparticles while maintaining the core-shell structure. Due to this configuration, granular magnetic particles with a core-shell structure in which a silicon oxide layer is formed on the surfaces of iron nitride microparticles can be obtained.
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公开(公告)号：US20180117673A1
公开(公告)日：2018-05-03
申请号：US15527947
申请日：2015-11-20
Applicant: NISSHIN ENGINEERING INC.
Inventor： Shu WATANABE , Keitaroh NAKAMURA , Shiori SUEYASU
CPC classification number: B22F1/0062 , B22F1/0018 , B22F1/0044 , B22F1/02 , B22F9/082 , B22F2009/045 , B22F2202/13 , B22F2301/255 , B22F2998/10 , B22F2999/00 , C22C1/0466 , C22C5/06 , B22F1/0011
Abstract: In the present invention, a fine silver particle has a particle diameter of 65-80 nm and has, on the surface of the particle, a thin film comprising a hydrocarbon compound. The fine silver particle has an exothermic peal temperature of 140-155° C. in differential thermal analysis. If d denotes the particle diameter after firing at a temperature of 100° C. for one hour and D denotes the particle diameter before firing, it is preferable for the fine silver particle to have a particle growth rate, as represented by (d−D)/D (%), of 50% or higher.
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公开(公告)号：US20170197843A1
公开(公告)日：2017-07-13
申请号：US15315644
申请日：2015-03-31
Applicant: NISSHIN ENGINEERING INC.
Inventor： Akihiro KINOSHITA
CPC classification number: C01G3/006 , C01G3/00 , C01P2002/72 , C01P2002/84 , C01P2004/03 , C01P2004/64 , C01P2006/40 , C01P2006/60 , H05H1/28 , H05H1/42 , H05H1/46 , H05H2001/4667
Abstract: The metal complex oxide particles according to the present invention are represented by general formula MCu2O2 and include copper. M is at least one of the alkaline earth metals Sr and Ba, and the metal complex oxide particles have a particle size of 1 to 100 nm and are transparent. M may further include at least one of the alkaline earth metals Mg and Ca. These metal complex oxide particles are granular p-type inorganic oxide semiconductor particles which are transparent and have a narrow particle size distribution and a uniform particle size, with there being few coarse particles of 1 μm or greater. In addition, a method for producing the metal complex oxide particles according to the present invention can easily and reliably produce transparent granular metal complex oxide particles.
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公开(公告)号：US20150175429A1
公开(公告)日：2015-06-25
申请号：US14411850
申请日：2013-06-03
Applicant: NISSHIN ENGINEERING INC.
Inventor： Shu Watanabe , Keitaroh Nakamura
IPC: C01B31/30
CPC classification number: C01B32/921 , H05H1/30
Abstract: A method for production of titanium carbide nanoparticles, the method having: a step for supplying titanium powder or titanium oxide powder into a thermal plasma flame; and a step for producing titanium carbide nanoparticles by supplying a reactive gas as a cooling gas and as a source of carbon at the downstream end of the thermal plasma flame. By varying the supplied quantity of the reactive gas, the oxygen concentration of the produced titanium carbide nanoparticles is varied. Therefore, for example, titanium carbide nanoparticles having different volume resistivity values can be produced.
Abstract translation: 一种生产碳化钛纳米颗粒的方法，该方法具有：将钛粉末或氧化钛粉末供应到热等离子体火焰中的步骤; 以及通过在热等离子体火焰的下游端提供作为冷却气体的反应性气体和碳源作为碳源来制造碳化钛纳米粒子的步骤。 通过改变反应气体的供给量，可以改变生成的碳化钛纳米粒子的氧浓度。 因此，例如可以制造具有不同体积电阻率值的碳化钛纳米粒子。
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