公开(公告)号：US20250118471A1

公开(公告)日：2025-04-10

申请号：US18836537

申请日：2023-02-07

Applicant: TODA KOGYO CORP.

Inventor： Hidemi TSUKAMOTO ,  Kozo WATANABE ,  Hideharu MITSUI ,  Yasushi NISHIO

IPC: H01F1/34 ,  C01G49/00 ,  C08K3/22 ,  H05K9/00

Abstract: Provided is a ferrite particle powder for electromagnetic wave absorption that can maintain flexibility and uniformity of physical properties of a sheet even when the sheet is highly filled with the ferrite particle powder and is excellent in electromagnetic wave absorbing performance in a GHz band. The ferrite particle powder is a ferrite particle powder for electromagnetic wave absorption, the ferrite particle powder containing magnetoplumbite-type ferrite represented by a chemical formula of AxFe(12-y)(TizMn(1-z))yO19, where A is at least one selected from Ba, Sr, Ca, and Pb, x is 0.9 to 1.1, y is 5.0 or less, and z is 0.35 to 0.65, and the ferrite particle powder having: a compressed density of 3.00 g/cm3 or more; and an average particle diameter of 0.50 to 3.0 μm determined by an air permeability method (Blaine method).

公开(公告)号：US20240145713A1

公开(公告)日：2024-05-02

申请号：US18546514

申请日：2022-03-30

Applicant: TODA KOGYO CORP.

Inventor： Nobuyuki KOBAYASHI ,  Haruki KUROKAWA

IPC: H01M4/587 ,  H01M4/04 ,  H01M4/36 ,  H01M4/48 ,  H01M10/0525

CPC classification number: H01M4/587 ,  H01M4/0471 ,  H01M4/366 ,  H01M4/483 ,  H01M10/0525 ,  H01M2004/021

Abstract: The purpose of the present invention is to provide a negative electrode material for a lithium ion secondary battery, which is improved in the capacity retention rate. The aspect of the present invention, there is provided silicon-containing amorphous carbon particles comprising an easy-graphitizable amorphous carbon containing silicon oxide particles having a chemical formula represented by SiOx (0

公开(公告)号：US11688534B2

公开(公告)日：2023-06-27

申请号：US15010539

申请日：2016-01-29

Applicant: TODA KOGYO CORP.

Inventor： Shohei Kaneko ,  Kuniyoshi Shigeoka ,  Nobuhiro Katayama ,  Koichiro Morimoto

IPC: H01F1/08 ,  B22F9/02 ,  H01F1/053 ,  C22C38/14 ,  C22C38/10 ,  C22C38/06 ,  C22C38/00 ,  H01F1/057

CPC classification number: H01F1/083 ,  B22F9/023 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/14 ,  H01F1/0573 ,  B22F2201/013 ,  B22F2203/13 ,  B22F2301/355 ,  B22F2998/10 ,  C22C2202/02 ,  H01F1/0572 ,  H01F1/0578

Abstract: A process for producing R-T-B-based rare earth magnet powder having excellent coercive force and high remanent flux density. A process for producing R-T-B-based rare earth magnet powder by HDDR treatment, in which a raw material alloy for the R-T-B-based rare earth magnet powder includes R (wherein R represents at least one rare earth element including Y), T (wherein T represents Fe, or Fe and Co) and B (wherein B represents boron), and has a composition including R in an amount of between 12.0 atom % and 17.0 atom %, and B in an amount of between 4.5 atom % and 7.5 atom %; the HDDR treatment includes a DR step including a preliminary evacuation step and a complete evacuation step; and a rate of pressure reduction caused by evacuation in the preliminary evacuation step is not less than 1 kPa/min and not more than 30 kPa/min.

公开(公告)号：US11551851B2

公开(公告)日：2023-01-10

申请号：US16367787

申请日：2019-03-28

Applicant: TODA KOGYO CORP. ,  Securitag Assembly Group Co., Ltd.

Inventor： Jun Koujima ,  Mark Chang ,  Yoshiteru Kouno ,  Peter Yan

IPC: H01F27/28 ,  H01F17/00 ,  H01F27/29 ,  H05K1/02 ,  H05K1/16 ,  H05K1/18 ,  H01Q7/06

Abstract: A module substrate antenna includes: a laminate in which a plurality of ferrite layers are stacked; antennal coils provided on surfaces of the respective ferrite layers; a connection pad connected to an external circuit; and a lead wire provided between the laminate and the connection pad. In the laminate, the antenna coils are two types of the antenna coils, and the two types of the antenna coils are alternately stacked.

公开(公告)号：US20210366636A1

公开(公告)日：2021-11-25

申请号：US17394003

申请日：2021-08-04

Applicant: Toda Kogyo Corp.

Inventor： Nobuhiro KATAYAMA ,  Hirofumi KAWASAKI ,  Koichiro MORIMOTO

IPC: H01F1/057 ,  C22C38/00 ,  C22C38/14 ,  C22C38/10 ,  C22C38/06 ,  H01F41/02

Abstract: The present invention provides R-T-B-based rare earth magnet particles comprising no expensive rare resources such as Dy and having an excellent coercive force which can be produced by HDDR treatment without any additional steps. The present invention relates to R-T-B-based rare earth magnet particles comprising crystal grains comprising a magnetic phase of R2T14B, and a grain boundary phase, in which the grain boundary phase has a composition comprising R in an amount of not less than 13.5 atom % and not more than 35.0 atom % and Al in an amount of not less than 1.0 atom % and not more than 7.0 atom %. The R-T-B-based rare earth magnet particles can be obtained by controlling heat treatment conditions in the DR step of the HDDR treatment in the course of subjecting a raw material alloy to the HDDR treatment.

公开(公告)号：US11096318B2

公开(公告)日：2021-08-17

申请号：US15743794

申请日：2016-07-11

Applicant: TODA KOGYO CORP.

Inventor： Yoji Okano ,  Akihiro Yoshida ,  Kazumi Yamamoto ,  Yuji Omote

IPC: H05K9/00 ,  B32B7/02 ,  H01F1/36 ,  H01F1/34

Abstract: In accordance with the present invention, there is provided a noise suppression sheet that is capable of absorbing noise at a wide frequency range of from 10 MHz to 1 GHz. The present invention relates to a ferrite laminate formed by laminating a conductive layer comprising a conductive filler and a resin and a magnetic layer comprising ferrite; the conductive layer has a surface electrical resistance of of 100 to 5000 Ω/□; the ferrite is partitioned into small parts; and a real part of a magnetic permeability of the ferrite as measured at 10 MHz is 130 to 480, and an imaginary part of of the magnetic permeability of the ferrite as measured at 10 MHz is 30 to 440.

公开(公告)号：US10714247B2

公开(公告)日：2020-07-14

申请号：US15312288

申请日：2015-05-21

Applicant: TODA KOGYO CORP.

Inventor： Yoji Okano ,  Makoto Sadai ,  Shingo Honda ,  Mitsunori Kurumada ,  Akihiro Yoshida ,  Kazuyoshi Kawato

IPC: H05K9/00 ,  H01F1/34 ,  C04B35/26

Abstract: The present invention relates to a ferrite sintered plate having a composition comprising 47 to 50 mol % of Fe2O3, 7 to 26 mol % of NiO, 13 to 36 mol % of ZnO, 7 to 12 mol % of CuO and 0 to 1.5 mol % of CoO, as calculated in terms of the respective oxides, in which the ferrite sintered plate has a volume resistivity of 1×108 to 1×1012·cm and a thickness of 10 to 60 μm; and a ferrite sintered sheet comprising the ferrite sintered plate on a surface of which a groove or grooves are formed, and an adhesive layer and/or a protective layer formed on the ferrite sintered plate, in which the ferrite sintered sheet has a magnetic permeability at 500 kHz a real part of which is 120 to 800 and an imaginary part of which is 0 to 30, and a product (μm) of the real part of the magnetic permeability at 500 kHz of the ferrite sintered sheet and a thickness of the ferrite sintered plate is 5000 to 48000. The ferrite sintered plate and the ferrite sintered sheet according to the present invention have a high volume resistivity as well as a large μ′ value and a small μ″ value of a magnetic permeability thereof, and therefore can be suitably used as a shielding plate in a digitizer system.

公开(公告)号：US10570016B2

公开(公告)日：2020-02-25

申请号：US15525165

申请日：2015-11-12

Applicant: TODA KOGYO CORP.

Inventor： Wataru Oda ,  Kazushige Kawai ,  Tomohiro Honda ,  Seiji Okazaki ,  Norimichi Nagai ,  Tetsuro Toda

IPC: C01B32/159 ,  B01J23/745 ,  H01M4/62 ,  C01B32/162 ,  H01M10/0525

Abstract: The present invention relates to carbon nanotubes that are excellent in dispersibility and a process for producing the carbon nanotubes. The carbon nanotubes according to the present invention each comprise a wall that comprises a parallel portion and a narrowed portion having a tube outer diameter that is not more than 90% of a tube outer diameter of the parallel portion. Thus, the carbon nanotubes are readily dispersible owing to a high abundance ratio of easily-breaking portions.

公开(公告)号：US10547047B2

公开(公告)日：2020-01-28

申请号：US15527417

申请日：2015-11-20

Applicant: TODA KOGYO CORP.

Inventor： Kazumichi Koga ,  Hiroaki Masukuni ,  Kazutoshi Matsumoto

IPC: H01M4/04 ,  H01M4/131 ,  H01M4/1391 ,  H01M10/0525 ,  H01M4/02

Abstract: Positive electrode active material particle powder includes lithium manganese oxide particle powder having Li and Mn as main components and a cubic spinel structure with an Fd-3m space group. The lithium manganese oxide particle powder is composed of secondary particles, which are aggregates of primary particles, an average particle diameter (D50) of the secondary particles being from 4 μm to 20 μm, and at least 80% of the primary particles exposed on surfaces of the secondary particles each have a polyhedral shape in which each (111) plane thereof is adjacent to at least one (100) plane thereof.

公开(公告)号：US20190393500A1

公开(公告)日：2019-12-26

申请号：US16561761

申请日：2019-09-05

Applicant: TODA KOGYO CORP.

Inventor： Kazumichi KOGA ,  Hiroaki MASUKUNI ,  Kazutoshi MATSUMOTO

IPC: H01M4/505 ,  H01M10/0525 ,  H01M4/131

Abstract: Positive electrode active material particle powder includes: lithium manganese oxide particle powder having Li and Mn as main components and a cubic spinel structure with an Fd-3m space group. The lithium manganese oxide particle powder is composed of secondary particles, which are aggregates of primary particles, an average particle diameter (D50) of the secondary particles being from 4 μm to 20 μm, and at least 80% of the primary particles exposed on surfaces of the secondary particles each have a polyhedral shape having at least one plane that is adjacent to two planes.