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公开(公告)号：US11279624B2
公开(公告)日：2022-03-22
申请号：US15962381
申请日：2018-04-25
发明人： Tadayuki Isaji , Takashi Ogihara , Takayuki Kodera
摘要： A method for producing forsterite microparticles having a primary particle size of 1, to 50 nm, as determined through electron microscopy. The method includes spray-drying, in an atmosphere of 50° C. or higher and lower than 300° C., a solution containing a water-soluble magnesium salt and colloidal silica at a mole ratio of magnesium atoms to silicon atoms (Mg/Si) of 2; and subsequently, firing the spray-dried product in air at 800 to 1,000° C.
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公开(公告)号：US11066599B2
公开(公告)日：2021-07-20
申请号：US16072579
申请日：2017-01-25
IPC分类号： C09K11/65 , C01B32/184
摘要： Provided is a production method for a carbon-based light-emitting material that generates light having a wavelength of 500 to 700 nm when exposed to excitation light having a wavelength of 300 to 600 nm. The production method comprises a step for mixing and heating a starting material containing ascorbic acid, an acid catalyst containing an inorganic acid, and a solvent.
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公开(公告)号：US11041120B2
公开(公告)日：2021-06-22
申请号：US16573801
申请日：2019-09-17
发明人： Tadayuki Isaji , Naoki Otani , Masahiro Ueda , Takayoshi Kawasaki
IPC分类号： C09K11/65 , C09K11/08 , C01B32/184
摘要： Provided is a method for manufacturing a carbonaceous luminescent material in which a polycarboxylic-acid-containing starting material, an acid catalyst, and a solvent are mixed together and heated.
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公开(公告)号：US09988278B2
公开(公告)日：2018-06-05
申请号：US15109949
申请日：2015-03-24
发明人： Tadayuki Isaji , Takashi Ogihara , Takayuki Kodera
CPC分类号： C01B33/22 , C01P2002/72 , C01P2004/04 , C01P2004/62 , C01P2004/64 , C04B35/20 , C04B35/64 , C04B2235/3418 , C04B2235/449 , C09C1/028 , C09C1/30
摘要： A method for producing forsterite microparticles having a primary particle size of 1 to 200 nm, as determined through electron microscopy, characterized in that the method includes spray-drying, at 50° C. or higher and lower than 300° C., a solution containing a water-soluble magnesium salt and colloidal silica at a mole ratio of magnesium atoms to silicon atoms (Mg/Si) of 2; and subsequently, firing the spray-dried product in air at 800 to 1,000° C.
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公开(公告)号：US10767109B2
公开(公告)日：2020-09-08
申请号：US15549844
申请日：2016-02-02
发明人： Tadayuki Isaji , Naoki Otani , Masahiro Ueda , Takayoshi Kawasaki
IPC分类号： C09K11/65 , C09K11/08 , C01B32/184
摘要： Provided is a method for manufacturing a carbonaceous luminescent material in which a polycarboxylic-acid-containing starting material, an acid catalyst, and a solvent are mixed together and heated.
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公开(公告)号：US10232335B2
公开(公告)日：2019-03-19
申请号：US15543455
申请日：2015-12-16
摘要： The β-eucryptite fine particle production method of the invention includes spraying, into an atmosphere at 50° C. to a temperature lower than 300° C., a solution containing a water-soluble lithium salt, a water-soluble aluminum salt, and colloidal silica, in such amounts that the mole proportions among lithium atoms, aluminum atoms, and silicon atoms (Li:Al:Si) are adjusted to 1:1:1, to thereby dry the solution, and, subsequently, firing the dried product in air at 600 to 1,300° C.
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