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Patent Agency Ranking
1.发明公开公开(公告)号：US20240228382A9
公开(公告)日：2024-07-11
申请号：US18401228
申请日：2023-12-29
Applicant: NICHIA CORPORATION
Inventor： Shozo TAKETOMI , Ryo YAMAMOTO , Tomomi FUJII , Toshiyuki HIRAI
CPC classification number: C04B35/44 , C04B38/0054 , C09K11/7706 , C04B2235/5463 , C04B2235/74 , C04B2235/785 , C04B2235/786 , C04B2235/80
Abstract: A rare earth aluminate sintered compact including rare earth aluminate phosphor crystalline phases and voids, wherein an absolute maximum length of 90% or more by number of rare earth aluminate phosphor crystalline phases is in a range from 0.4 μm to 1.3 μm, and an absolute maximum length of 90% or more by number of voids is in a range from 0.1 μm to 1.2 μm.
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公开(公告)号：US20230348331A1
公开(公告)日：2023-11-02
申请号：US18310949
申请日：2023-05-02
Applicant: NICHIA CORPORATION
Inventor： Ryo YAMAMOTO , Shozo TAKETOMI
IPC: C04B35/44
CPC classification number: C04B35/44 , C04B2235/3224 , C04B2235/3217
Abstract: A rare earth aluminate sintered body includes crystal agglomerated particles containing a rare earth aluminate fluorescent material crystal phase, and a rare earth aluminate crystal phase having a refractive index different from that of the rare earth aluminate fluorescent material crystal phase, wherein the rare earth aluminate crystal phase is arranged around the crystal agglomerated particles.
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3.发明公开公开(公告)号：US20240132408A1
公开(公告)日：2024-04-25
申请号：US18401228
申请日：2023-12-29
Applicant: NICHIA CORPORATION
Inventor： Shozo TAKETOMI , Ryo YAMAMOTO , Tomomi FUJII , Toshiyuki HIRAI
CPC classification number: C04B35/44 , C04B38/0054 , C09K11/7706 , C04B2235/5463 , C04B2235/74 , C04B2235/785 , C04B2235/786 , C04B2235/80
Abstract: A rare earth aluminate sintered compact including rare earth aluminate phosphor crystalline phases and voids, wherein an absolute maximum length of 90% or more by number of rare earth aluminate phosphor crystalline phases is in a range from 0.4 μm to 1.3 μm, and an absolute maximum length of 90% or more by number of voids is in a range from 0.1 μm to 1.2 μm.
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公开(公告)号：US20240286189A1
公开(公告)日：2024-08-29
申请号：US18590845
申请日：2024-02-28
Applicant: NICHIA CORPORATION
Inventor： Ryo YAMAMOTO , Shozo TAKETOMI
CPC classification number: B22F1/12 , B22F3/10 , B22F2301/052 , B22F2301/30 , B22F2301/45
Abstract: A method for producing a sintered body includes: providing a raw material mixture containing oxide particles containing Ce, Al, Ga, optionally Sc, and a rare earth element R1 being at least one selected from the group consisting of Y, La, Gd, and Tb to obtain a target composition, wherein a total molar ratio of R1 and Ce is 3, and a molar ratio of Ce, a total molar ratio of Al, Ga, and Sc, a molar ratio of Al and a molar ratio of the Ga are as described in the disclosure; molding the raw material mixture to obtain a molded body; and calcining the molded body to obtain a sintered body containing a rare earth aluminate crystal phase and 2.7% by volume or more to 57.0% by volume or less of an aluminum oxide phase.
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公开(公告)号：US20240076542A1
公开(公告)日：2024-03-07
申请号：US18454933
申请日：2023-08-24
Applicant: NICHIA CORPORATION
Inventor： Ryo YAMAMOTO , Shozo TAKETOMI
IPC: C09K11/02 , C04B35/117 , C04B35/626 , C04B35/64 , C09K11/77
CPC classification number: C09K11/02 , C04B35/117 , C04B35/62655 , C04B35/64 , C09K11/7774 , C04B2235/3222 , C04B2235/5409 , C04B2235/5436 , C04B2235/656 , C04B2235/85 , C04B2235/9646
Abstract: A sintered body includes an aluminum oxide phase and crystal agglomerated particles containing a rare earth aluminate fluorescent material crystal phase, wherein the aluminum oxide phase is disposed around the crystal agglomerated particles. A method for producing a sintered body includes: providing a first mixture obtained by wet mixing raw materials and then drying; dry mixing the first mixture and aluminum oxide particles; molding a mixture obtained by dry mixing the first raw material mixture and the aluminum oxide particles; and calcining a molded body obtained by molding the mixture.
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