公开(公告)号：US11965228B2

公开(公告)日：2024-04-23

申请号：US17600968

申请日：2020-03-03

Applicant: KOA CORPORATION

Inventor： Shuhei Matsubara ,  Keishi Nakamura

IPC: C22C29/12 ,  B22F1/12 ,  B22F3/14 ,  C04B35/117 ,  C04B35/64 ,  H01C1/14 ,  H01C7/00 ,  H01C17/065

CPC classification number: C22C29/12 ,  B22F1/12 ,  B22F3/14 ,  C04B35/117 ,  C04B35/64 ,  H01C1/14 ,  H01C7/003 ,  H01C17/06553 ,  B22F2302/25 ,  C04B2235/3217 ,  C04B2235/3232 ,  C04B2235/405 ,  C04B2235/5454 ,  C04B2235/9607

Abstract: The resistive material for sensing current contains: metal particles selected from a group consisting of nichrome, copper-manganese, and copper-nickel; insulating particles selected from a group consisting of alumina, aluminum nitride, silicon nitride, and zirconia; and titanium oxide.

公开(公告)号：US12146899B2

公开(公告)日：2024-11-19

申请号：US17916641

申请日：2021-04-01

Applicant: KOA CORPORATION

Inventor： Susumu Toyoda ,  Keishi Nakamura ,  Shuhei Matsubara

IPC: G01R1/20 ,  H01C1/142 ,  H01C17/00

Abstract: The mounting area for an electronic component and a resistor for current detection is reduced. A current detection resistor for detecting current includes a plate-like resistive body, and a first electrode and an opposite second electrode which are stacked in a thickness direction of the resistive body and are disposed so as to sandwich the resistive body. The first electrode has a groove portion.

公开(公告)号：US20210304925A1

公开(公告)日：2021-09-30

申请号：US17263988

申请日：2019-08-02

Applicant: KOA Corporation

Inventor： Shuhei Matsubara ,  Keishi Nakamura

IPC: H01C1/14 ,  H01C17/00 ,  G01R15/14 ,  G01R19/00

Abstract: A resistive material for sensing current contains particles having an electrically insulating property and a metal body having a three-dimensional network enclosing the particles, and a ratio of the metal body to the whole of the resistive material is 30 vol % or more and 80 vol % or less.

公开(公告)号：US11842830B2

公开(公告)日：2023-12-12

申请号：US17602120

申请日：2020-03-03

Applicant: KOA Corporation

Inventor： Susumu Toyoda ,  Shuhei Matsubara ,  Keishi Nakamura

IPC: H01C7/13 ,  G01R15/14 ,  G01R19/00 ,  H01C1/144

CPC classification number: H01C7/13 ,  G01R15/144 ,  G01R15/146 ,  G01R19/0023 ,  H01C1/144

Abstract: A shunt resistor 10, 110 includes a flat resistive element 11; a first electrode block 12 that is made of a conductive metal material and is laminated on a lower surface 11a of the resistive element 11; and a second electrode block 13, 113 that is made of a conductive metal material and is laminated on an upper surface 11b of the resistive element 11, in which the second electrode block 13, 113 is a block body including an electrode portion 14 connected to the resistive element 11 and an extension portion 15, 115 extending downward from a side surface of the electrode portion 14.

公开(公告)号：US11282621B2

公开(公告)日：2022-03-22

申请号：US17257971

申请日：2019-06-21

Applicant: KOA Corporation

Inventor： Shuhei Matsubara ,  Keishi Nakamura

IPC: H01C1/012 ,  H01C1/144

Abstract: A resistor according to the present disclosure includes an insulated substrate, a resistive layer formed of a resistance body material and a bonding layer for bonding the insulated substrate and the resistive layer, wherein the resistor is configured so that a ratio of a sheet resistance of the bonding layer to a sheet resistance of the resistive layer is 100 or more.

公开(公告)号：US11495374B2

公开(公告)日：2022-11-08

申请号：US17263988

申请日：2019-08-02

Applicant: KOA Corporation

Inventor： Shuhei Matsubara ,  Keishi Nakamura

IPC: H01C1/14 ,  G01R15/14 ,  G01R19/00 ,  H01C17/00

Abstract: A resistive material for sensing current contains particles having an electrically insulating property and a metal body having a three-dimensional network enclosing the particles, and a ratio of the metal body to the whole of the resistive material is 30 vol % or more and 80 vol % or less.

公开(公告)号：US20210225562A1

公开(公告)日：2021-07-22

申请号：US17257971

申请日：2019-06-21

Applicant: KOA Corporation

Inventor： Shuhei Matsubara ,  Keishi Nakamura

IPC: H01C1/012 ,  H01C1/144

Abstract: A resistor according to the present disclosure includes an insulated substrate, a resistive layer formed of a resistance body material and a bonding layer for bonding the insulated substrate and the resistive layer, wherein the resistor is configured so that a ratio of a sheet resistance of the bonding layer to a sheet resistance of the resistive layer is 100 or more.

公开(公告)号：US20220157497A1

公开(公告)日：2022-05-19

申请号：US17600968

申请日：2020-03-03

Applicant: KOA CORPORATION

Inventor： Shuhei Matsubara ,  Keishi Nakamura

IPC: H01C1/14 ,  C04B35/117 ,  C04B35/64 ,  B22F3/14 ,  B22F1/12 ,  H01C17/065 ,  H01C7/00

Abstract: The resistive material for sensing current contains: metal particles selected from a group consisting of nichrome, copper-manganese, and copper-nickel; insulating particles selected from a group consisting of alumina, aluminum nitride, silicon nitride, and zirconia; and titanium oxide.

公开(公告)号：US20220148769A1

公开(公告)日：2022-05-12

申请号：US17602120

申请日：2020-03-03

Applicant: KOA Corporation

Inventor： Susumu Toyoda ,  Shuhei Matsubara ,  Keishi Nakamura

IPC: H01C7/13 ,  G01R15/14 ,  H01C1/144 ,  G01R19/00

Abstract: A shunt resistor 10, 110 includes a flat resistive element 11; a first electrode block 12 that is made of a conductive metal material and is laminated on a lower surface 11a of the resistive element 11; and a second electrode block 13, 113 that is made of a conductive metal material and is laminated on an upper surface 11b of the resistive element 11, in which the second electrode block 13, 113 is a block body including an electrode portion 14 connected to the resistive element 11 and an extension portion 15, 115 extending downward from a side surface of the electrode portion 14.