公开(公告)号：US11926782B2

公开(公告)日：2024-03-12

申请号：US17754654

申请日：2020-10-12

申请人： 3M INNOVATIVE PROPERTIES COMPANY

发明人： Sergei A. Manuilov ,  Adam D. Milller ,  Laura M. Lara Rodriguez ,  Dwight D. Erickson ,  Anatoly Z. Rosenflanz

IPC分类号： C09K3/14 ,  H01F1/11

CPC分类号： C09K3/1436 ,  H01F1/11

摘要： A magnetizable abrasive particle is presented. The magnetizable abrasive particle has a ceramic particle having an outer surface. The magnetizable abrasive particle also has a magnetic coating layer applied to the outer surface of the ceramic particle prior to sintering. The sintered magnetizable particle is responsive to a magnetic field.

公开(公告)号：US20240033979A1

公开(公告)日：2024-02-01

申请号：US18379809

申请日：2023-10-13

申请人： TODA KOGYO CORP.

发明人： Yasushi NISHIO ,  Yasuhiko FUJII ,  Hiromitsu SAKURAI

IPC分类号： B29C45/00 ,  C01G49/00 ,  H01F1/11

CPC分类号： B29C45/0001 ,  C01G49/0036 ,  H01F1/11 ,  C01P2006/42 ,  C01P2006/12 ,  B29K2505/12

摘要： The present invention relates to ferrite particles for bonded magnets and a resin composition for bonded magnets which can provide a bonded magnet molded product capable of realizing a high magnetic force and a complicated multipolar waveform owing to such a feature that the ferrite particles are readily and highly oriented against an external magnetic field in a flowing resin upon injection molding, as well as a bonded magnet molded product obtained by injection-molding the above composition. According to the present invention, there are provided ferrite particles for bonded magnets which have a crystallite size of not less than 500 nm as measured in an oriented state by XRD, and an average particle diameter of not less than 1.30 μm as measured by Fisher method; a resin composition for bonded magnets; and a molded product obtained by injection-molding the composition.

公开(公告)号：US11776720B2

公开(公告)日：2023-10-03

申请号：US17724696

申请日：2022-04-20

申请人： PROTERIAL, LTD.

发明人： Yasuaki Tanioku ,  Yushi Yoshimitsu ,  Yoshinori Kobayashi

IPC分类号： H01F1/11 ,  H01F1/03 ,  H01F1/08 ,  H01F41/02

CPC分类号： H01F1/11 ,  H01F41/0266

摘要： A sintered ferrite magnet having a composition of metal elements of Ca, R, A, Fe and Co, which is represented by the general formula of Ca1−x−yRxAyFe2n−zCoz, wherein R is at least one of rare earth elements indispensably including La; A is Sr and/or Ba; x, y, z and n represent the atomic ratios of Ca, R, A, Fe and Co; 2n represents a molar ratio expressed by 2n=(Fe+Co)/(Ca+R+A); and x, y, z and n meet the conditions of 0.15≤x≤0.35, 0.05≤y≤0.40, (1−x−y)>y, 0

公开(公告)号：US11691892B2

公开(公告)日：2023-07-04

申请号：US17166352

申请日：2021-02-03

申请人： ROGERS CORPORATION

发明人： Yajie Chen ,  Li Zhang ,  Shawn Williams

IPC分类号： H01F1/34 ,  H01F1/11 ,  C01G51/00 ,  C04B35/26 ,  C08K3/22

CPC分类号： C01G51/66 ,  C08K3/22 ,  H01F1/348 ,  C01P2004/04 ,  C01P2004/64 ,  C08K2003/2265 ,  C08K2201/001 ,  C08K2201/005 ,  C08K2201/01 ,  C08K2201/011

摘要： In an aspect, a Co2Z ferrite has the formula: (Ba1-xSrx)3Co2+yMyFe24-2y-zO41. M is at least one of Mo, Ir, or Ru. The variable x can be 0 to 0.8, or 0.1 to 0.8. The variable y can be 0 to 0.8, or 0.01 to 0.8. The variable z can be −2 to 2. The Co2Z ferrite can have an average grain size of 5 to 100 nanometers, or 30 to 80, or 10 to 40 nanometers as measured using at least one of transmission electron microscopy, field emission scanning electron microscopy, or x-ray diffraction.

公开(公告)号：US20230192508A1

公开(公告)日：2023-06-22

申请号：US17924163

申请日：2021-08-24

申请人： DOWA ELECTRONICS MATERIALS CO., LTD.

发明人： Yasuto MIYAMOTO

IPC分类号： C01G51/00 ,  G11B5/714 ,  H01F1/11

CPC分类号： C01G51/40 ,  G11B5/714 ,  H01F1/11 ,  C01P2002/50 ,  C01P2004/64 ,  C01P2006/42 ,  C01P2004/04

摘要： A dispersed iron oxide magnetic powder slurry, in which the average secondary particle diameter of ε-type iron oxide measured with a dynamic light scattering particle size distribution analyzer is 65 nm or less, and which has good dispersibility, is obtained by adding a quaternary ammonium salt serving as a first dispersant and an alkali to a slurry containing ε-type iron oxide particles to bring the pH at 25° C. to 11 or higher, and thereafter adding an organic compound, which is an organic acid serving as a second dispersant and having two or more carboxy groups in the molecule, and in which one type or two types of a hydroxy group and an amino group are bound to carbon that does not constitute a carboxy group other than the carboxy groups to bring the pH at 25° C. of the slurry to 4 or higher and lower than 11.

公开(公告)号：US11610705B2

公开(公告)日：2023-03-21

申请号：US16823871

申请日：2020-03-19

申请人： TDK Corporation

发明人： Yoshitaka Murakawa ,  Shogo Muroya ,  Hiroyuki Morita ,  Masanori Ikeda

IPC分类号： H01F1/11 ,  H02K1/02 ,  C04B35/26 ,  H01F1/10

摘要： A ferrite sintered magnet comprising an M type Sr ferrite having a hexagonal structure as a main phase, wherein the ferrite sintered magnet does not substantially comprise a rare earth element and Co, a content of B is 0.005 to 0.9% by mass in terms of B2O3, and a content of Zn is 0.01 to 1.2% by mass in terms of ZnO.

公开(公告)号：US11569013B2

公开(公告)日：2023-01-31

申请号：US16302704

申请日：2017-05-19

申请人： TDK CORPORATION

发明人： Junnichi Nagaoka ,  Hitoshi Taguchi

IPC分类号： H01F1/11 ,  H01F1/03 ,  C01G49/00 ,  C01G51/00 ,  C04B35/26 ,  H01F1/10 ,  C04B35/626

摘要： This ferrite magnet has a magnetoplumbite structure and is characterized in that, when representing the composition ratios of the total of each metal element A, R, Fe and Me with expression (1) A1-xRx(Fe12-yMey)z, the Fe2+ content (m) in the ferrite magnet is greater than 0.1 mass % and less than 5.4 mass % (in expression (1), A is at least one element selected from Sr, Ba, Ca and Pb; R is at least one element selected from the rare-earth elements (including Y) and Bi, and includes at least La, and Me is Co, or Co and Zn). The invention makes it possible to achieve a ferrite magnet with increased Br.

公开(公告)号：US11562839B2

公开(公告)日：2023-01-24

申请号：US15974797

申请日：2018-05-09

申请人： FUJIFILM Corporation

发明人： Kenji Naoi ,  Takashi Fujimoto ,  Masashi Shirata

IPC分类号： H01F1/03 ,  H01F1/00 ,  C01G49/06 ,  C08L101/06 ,  C01G49/08 ,  H01F1/11 ,  G11B5/70 ,  C01G49/00

摘要： A core-shell particle includes: a core including an iron oxyhydroxide compound represented by Formula A3a3Fe1−a3OOH (in which A3 represents at least one metal element other than Fe, and a3 satisfies 0

公开(公告)号：US20220406500A1

公开(公告)日：2022-12-22

申请号：US17349971

申请日：2021-06-17

申请人： OSRAM Opto Semiconductors GmbH

发明人： Robert FITZMORRIS ,  Brian THEOBALD

IPC分类号： H01F1/11 ,  H01L33/50 ,  C09K11/56 ,  C09K11/88 ,  C01F7/02 ,  C01G49/08

摘要： A wavelength converter material and a method of A method of preparing a wavelength converter material may include providing an optionally oxide coated phosphor material, mixing the optionally oxide coated phosphor material with an optionally oxide coated paramagnetic nanoparticle, coating the optionally oxide coated phosphor material and the optionally oxide coated paramagnetic nanoparticle with an oxide coating, thereby preparing a coated phosphor-nanoparticle particle, and separating the coated phosphor-nanoparticle particle, thereby preparing a wavelength converter material. The separating of the coated phosphor-nanoparticle particle may be manipulated by applying a magnetic field.
Furthermore, a wavelength converter material, as well as a light emitting diode are described herein.

公开(公告)号：US11521649B2

公开(公告)日：2022-12-06

申请号：US16330010

申请日：2017-09-27

申请人： SONY CORPORATION

发明人： Atsushi Muramatsu ,  Masafumi Nakaya ,  Masaru Terakawa ,  Satoru Abe ,  Natsuki Toyosawa ,  Katsunori Maeshima

IPC分类号： G11B5/714 ,  C01G49/06 ,  G11B5/65 ,  G11B5/842 ,  H01F1/00 ,  H01F1/06 ,  H01F1/11 ,  G11B5/712 ,  G11B5/706 ,  B82Y25/00 ,  B82Y40/00

摘要： A method of producing a magnetic powder includes: performing heat treatment on first particles that contain triiron tetraoxide to prepare second particles that contain ε-iron oxide.