公开(公告)号：US11752549B2

公开(公告)日：2023-09-12

申请号：US17150979

申请日：2021-01-15

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Masahiro Hachiya ,  Hitoshi Matsuura ,  Takayuki Arai ,  Shuhei Kurahashi ,  Hideo Machida ,  Hidekazu Teshigawara ,  Naoya Honmo

IPC: H01F17/00 ,  H01F27/255 ,  H01F27/28 ,  H01F17/04 ,  H01F27/29 ,  B22F1/08 ,  H01F1/20 ,  H01F1/24 ,  H01F1/36 ,  B22F1/16 ,  B22F1/102 ,  H01F41/02 ,  H01F41/04 ,  H01F1/147 ,  B22F7/02

CPC classification number: B22F1/08 ,  B22F1/102 ,  B22F1/16 ,  H01F1/20 ,  H01F1/24 ,  H01F1/36 ,  H01F17/0013 ,  H01F17/0033 ,  H01F17/04 ,  H01F27/255 ,  H01F27/2804 ,  H01F27/292 ,  B22F7/02 ,  B22F2998/10 ,  B22F2999/00 ,  H01F1/14766 ,  H01F41/0246 ,  H01F41/04 ,  H01F2017/0066 ,  H01F2017/0093 ,  H01F2017/048 ,  H01F2027/2809 ,  B22F2998/10 ,  B22F3/02 ,  B22F3/1007 ,  B22F2999/00 ,  B22F3/1007 ,  B22F2201/03 ,  B22F2201/50

Abstract: A coil component includes: a magnetic body part and a cover part covering one side of a magnetic layer part; and a coil part embedded in the magnetic body part. The magnetic body part is comprised of the following two types of layers: (A) an oblate soft magnetic grain-containing layer, and (B) a spherical grain-containing layer, wherein layer (A) extends over the entire range of the magnetic body part except for a portion including the coil part in a direction perpendicular to an axis direction of the coil part, layer (B) adjoins layer (A) in the axis direction. The cover part is constituted by multiple layers including one or more of layer(s) (A) and one or more of layer(s) (B) and extending over the entire range of the magnetic body part in the direction perpendicular to the axis direction.

公开(公告)号：US11739403B2

公开(公告)日：2023-08-29

申请号：US16829074

申请日：2020-03-25

Applicant: TDK CORPORATION

Inventor： Satoko Mori ,  Kazuhiro Yoshidome ,  Hiroyuki Matsumoto

IPC: C22C38/16 ,  H01F1/147 ,  B22F9/08 ,  C22C38/12 ,  C22C38/00 ,  H01F1/153 ,  C22C38/02 ,  H01F1/33 ,  H01F1/36 ,  B22F1/16 ,  H01F1/20 ,  H01F1/24 ,  B22F1/08

CPC classification number: C22C38/16 ,  B22F1/08 ,  B22F1/16 ,  B22F9/082 ,  C22C38/002 ,  C22C38/02 ,  C22C38/12 ,  H01F1/14766 ,  H01F1/15308 ,  H01F1/15333 ,  H01F1/15341 ,  H01F1/20 ,  H01F1/24 ,  H01F1/33 ,  H01F1/36 ,  B22F2301/35 ,  C22C2200/02 ,  C22C2200/04 ,  C22C2202/02

Abstract: A soft magnetic metal powder that has low coercivity Hcj and high saturation magnetic flux density Bs, and has high powder resistivity and high insulating performance is obtained. The soft magnetic metal powder is soft magnetic metal powder containing Fe. The soft magnetic metal powder has particles each including a soft magnetic metal portion and a coating portion coating the soft magnetic metal portion. The coating portion includes a first coating portion and a second coating portion. The first coating portion is closer to the soft magnetic metal portion than the second coating portion. The first coating portion and the second coating portion have oxides containing at least one element selected from Si, Fe, and B as a main component. The first coating portion includes amorphous material, the second coating portion includes crystals, and the second coating portion has a higher crystal content ratio than the first coating portion.

公开(公告)号：US11732336B2

公开(公告)日：2023-08-22

申请号：US16648269

申请日：2018-09-20

Applicant: National Institute of Advanced Industrial Science and Technology

Inventor： Shinpei Yamamoto ,  Nobuyoshi Imaoka ,  Kimihiro Ozaki

IPC: H01F1/147 ,  B22F1/00 ,  C22C33/02 ,  H01F1/06 ,  H01F1/153 ,  H01F1/33 ,  B22F3/00

CPC classification number: C22C33/02 ,  B22F1/00 ,  B22F3/00 ,  H01F1/065 ,  H01F1/14741 ,  H01F1/14775 ,  H01F1/15316 ,  H01F1/33

Abstract: Provided are: a novel magnetic material having high magnetic stability, in particular, having an extremely high saturation magnetization; and a method for producing the same, wherein the magnetic material, due to having a higher saturation magnetization than ferrite magnetic materials and a higher electrical resistivity than existing metallic magnetic materials, resolves problems such as eddy current loss. According to the present invention, Co-ferrite nanoparticles obtained by wet synthesis are reduced in hydrogen and subjected to grain growth, and bcc- or fcc-(Fe, Co) phases and Co-enriched phases are nano-dispersed using phase separation via a disproportionation reaction to prepare a magnetic material powder. In addition, the magnetic material powder is sintered into a solid magnetic material.

公开(公告)号：US11732319B2

公开(公告)日：2023-08-22

申请号：US17414042

申请日：2019-12-10

Applicant: JFE Steel Corporation

Inventor： Yoshihiko Oda ,  Yoshiaki Zaizen ,  Tomoyuki Okubo ,  Takaaki Tanaka ,  Yukino Miyamoto

IPC: C21D9/46 ,  C21D6/00 ,  C21D8/00 ,  C21D8/12 ,  C22C38/00 ,  C22C38/04 ,  C22C38/06 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/28 ,  C22C38/34 ,  C22C38/40 ,  H01F1/147

CPC classification number: C21D9/46 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/005 ,  C21D8/1222 ,  C21D8/1233 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/008 ,  C22C38/04 ,  C22C38/06 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/28 ,  C22C38/34 ,  C22C38/40 ,  H01F1/147 ,  C22C2202/02

Abstract: Proposed is a non-oriented electrical steel sheet being low in iron loss and excellent in tensile strength and fatigue strength, which has a chemical composition comprising C: not more than 0.005 mass %, Si: 3 to 5 mass %, Mn: not more than 5 mass %, P: not more than 0.1 mass %, S: not more than 0.01 mass %, Al: not more than 3 mass %, N: not more than 0.005 mass %, Zn: 0.0005 mass % to 0.003 mass %, and the remainder being Fe and inevitable impurities, an average crystal grain size being not more than 40 μm, the number of the inclusions having a diameter of not less than 5 μm being not more than 5/mm2, a tensile strength being not less than 600 MPa, and the fatigue strength being not less than 450 MPa.

公开(公告)号：US20230257859A1

公开(公告)日：2023-08-17

申请号：US18014098

申请日：2021-03-19

Applicant: DAIDO STEEL CO., LTD.

Inventor： Takamasa SATO ,  Yusuke KUSAFUKA ,  Chihiro FURUSHO ,  Yoshihiko KOYANAGI

IPC: C22C38/10 ,  C22C38/02 ,  C22C38/04 ,  H01F1/147 ,  C21D9/46 ,  H01F1/16 ,  C21D8/02

CPC classification number: C22C38/10 ,  C22C38/02 ,  C22C38/04 ,  H01F1/147 ,  C21D9/46 ,  H01F1/16 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0205

Abstract: An alloy for an Fe—Co-based soft-magnetic member, includes an alloy composition including, in terms of mass %, from 5.00% to 25.00% of Co, from 0.10% to 2.00% of Si, and from 0.10% to 2.00% of Al, provided that a total content of Si and Al is from 1.00% to 3.00%, with the balance being Fe and unavoidable impurities.

公开(公告)号：US20230253136A1

公开(公告)日：2023-08-10

申请号：US18136590

申请日：2023-04-19

Applicant: Fermi Research Alliance, LLC

Inventor： Vadim V. Kashikhin

IPC: H01F6/06 ,  H01F41/04 ,  H01F1/147 ,  B23K26/354 ,  B33Y10/00 ,  B23K26/342 ,  B33Y70/00 ,  B22F10/00 ,  H01F5/02 ,  H01F41/082

CPC classification number: H01F6/06 ,  H01F41/048 ,  H01F1/147 ,  B23K26/354 ,  B33Y10/00 ,  B23K26/342 ,  B33Y70/00 ,  B22F10/00 ,  H01F5/02 ,  H01F41/082 ,  B33Y80/00

Abstract: A Conductor on Molded Barrel (COMB) magnet assembly optimized for High Temperature Superconducting (HTS) materials. The magnet assembly comprises a magnetic coil(s) carried by a conductor support structure and configured in cosine-theta geometry. Created using additive manufacturing, the conductor support structure features a continuous cable channel that fittedly carries and positions elongated straight portion(s) of the magnetic coil(s) parallel to a magnetic axis. The conductor support structure may be cylindrically shaped and longitudinally bored, with the continuous cable channel comprising an outer channel portion (distal on the cylinder) and an inner channel portion (proximal on the cylinder). A transition hole that joins the outer channel portion and the inner channel portion allows a single magnetic coil to be wound along both the outer and inner surfaces of the conductor support structure. The conductor support structure may be fabricated as longitudinally-symmetrical halves, and secured for operation using azimuthal and/or midplane shims.

公开(公告)号：US11702718B2

公开(公告)日：2023-07-18

申请号：US17195008

申请日：2021-03-08

Applicant: Dieter Krech ,  Thomas Kloss

Inventor： Dieter Krech ,  Thomas Kloss

IPC: C21D9/52 ,  C21D8/02 ,  H01F1/147

CPC classification number: C21D9/52 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  H01F1/147

Abstract: A method of making a soft magnetic intermediate product of metal with particularly good magnetization behavior, the method comprising the following method steps:



production or provision of a metallic, rollable blank of a metallic product,
preliminary rolling of the metallic blank with a defined degree of deformation to an intermediate thickness, the degree of deformation being matched to a critical or postcritical degree of rolling to be observed during subsequent rolling,
heat treatment of the prerolled blank, preferably annealing of the prerolled blank,
rolling of the blank with a critical or postcritical degree of rolling to a final thickness and subsequent annealing to set a defined grain size and
finishing of the intermediate product.

公开(公告)号：US20230187575A1

公开(公告)日：2023-06-15

申请号：US18162946

申请日：2023-02-01

Applicant: INGENTEC CORPORATION

Inventor： HSIANG-AN FENG ,  CHIA-WEI TU ,  CHENG-YU CHUNG ,  YA-LI CHEN

IPC: H01L33/00 ,  H01F1/147 ,  H01L25/075

CPC classification number: H01L33/0095 ,  H01F1/14708 ,  H01L25/0753

Abstract: A magnetic light-emitting structure and fabrication method for manufacturing a magnetic light-emitting element are provided. The fabrication method comprises providing a magnetic metal composite substrate, wherein a second metal layer is respectively disposed on an upper and lower surface of a first metal layer; forming a connecting metal layer, an epitaxial layer and a plurality of electrode unit on top; and performing a complex process, which removes the second metal layer on the lower surface of the first metal layer and part of the first metal layer and performs cutting according to the number of the electrode unit, so as to form a plurality of epitaxial die. Each epitaxial die corresponds to an electrode unit to form a magnetic light-emitting element. The proposed method improves soft magnetic properties of an original substrate and enables dies to reverse spontaneously, thereby used perfectly for industrial mass transfer technology.

公开(公告)号：US11676787B2

公开(公告)日：2023-06-13

申请号：US16495576

申请日：2017-12-13

Applicant: Siemens Aktiengesellschaft

Inventor： Andreas Krauss ,  Michael Stehle

IPC: H01H47/22 ,  H01F1/147 ,  H01F1/36 ,  H01H71/10 ,  H03H7/06 ,  H02H1/06 ,  H02H9/02 ,  H01F1/34 ,  H02H3/08

CPC classification number: H01H47/22 ,  H01F1/14733 ,  H01F1/34 ,  H01F1/36 ,  H01H71/10 ,  H02H1/06 ,  H02H3/08 ,  H02H9/02 ,  H03H7/06

Abstract: The application relates to a power switch for breaking an electrical circuit when current and/or current time span threshold values are exceeded, including an energy converter, which on the primary side is connected to the electrical circuit, and on the secondary side provides an energy supply for at least one control unit of the power switch. A choke is connected between the secondary-side output of the energy converter and the control unit of the power switch.

公开(公告)号：US11661636B2

公开(公告)日：2023-05-30

申请号：US16981126

申请日：2019-03-19

Applicant: NIPPON STEEL CORPORATION

Inventor： Nobusato Morishige ,  Takashi Kataoka ,  Haruhiko Atsumi ,  Yasuhiro Mayumi ,  Toshiya Takechi ,  Naoto Masumitsu ,  Tomoya Suenaga ,  Masamitsu Kubota ,  Hideyuki Hamamura ,  Kazuhiko Fukutani

IPC: C21D9/46 ,  C21D8/12 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/20 ,  C22C38/60 ,  C23G1/00 ,  H01F1/147

CPC classification number: C21D9/46 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1272 ,  C21D8/1283 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/20 ,  C22C38/60 ,  C23G1/00 ,  H01F1/14783

Abstract: A method for manufacturing a grain-oriented electrical steel sheet according to an aspect of the present invention includes a step of obtaining a hot-rolled steel sheet by carrying out hot rolling on a slab containing a predetermined component composition with a remainder including Fe and impurities, a step of obtaining a hot-rolled annealed sheet by carrying out hot-rolled sheet annealing as necessary, a step of carrying out pickling to obtain a pickled sheet, a step of carrying out cold rolling to obtain a cold-rolled steel sheet, a step of carrying out primary recrystallization annealing, a step of applying an annealing separating agent including MgO to a surface and then carrying out final annealing to obtain a final-annealed sheet, and a step of applying an insulating coating and then carrying out flattening annealing.