baber/WOPTO huggingface dataset:
Patent KR-20200145789-A (KR)
Inventor: SUNGGI KIM
IPC: H02K7/14
Filed: 2020-10-20
Abstract: According to one embodiment of the present invention, disclosed is a motor assembly comprising: a rotary shaft; an impeller installed on the rotary shaft; a rotor installed on the rotary shaft to be spaced apart from the impeller at a predetermined interval in an axial direction of the rotary shaft; a stator surrounding an outer side of the rotor to be spaced apart from the rotor at a predetermined interval in a radial direction of the rotary shaft; a rolling bearing installed on the rotary shaft and installed between the impeller and the rotor to support a first support portion of the rotary shaft; a motor housing having a stator installed on an inner peripheral surface thereof and a gas bearing bracket which accommodates a second support portion of the rotary shaft positioned at an opposite side of the first support portion with respect to the rotor in the axial direction of the rotary shaft; and a gas bearing assembly accommodated in the gas bearing bracket to support rotation of the second support portion of the rotary shaft, wherein the gas bearing assembly includes a gas bearing surrounding an outer peripheral surface of the second support portion and spaced apart from the second support portion of the rotary shaft at a predetermined interval when the rotary shaft rotates, and an elastic member interposed between an inner peripheral surface of the gas bearing bracket and an outer peripheral surface of the gas bearing to elastically support the gas bearing. According to the present invention, the lifespan of the bearing can be sufficiently ensured.
Patent KR-20210049009-A (KR)
Title: Pressurized gas tank
Inventor: KERFORN PATRICE
IPC: F17C13/00
Filed: 2020-10-23
Abstract: A tank for pressurized gas such as hydrogen, according to the present invention, comprises a structure, a base (4), a sealing jacket (6) and a ring (9). The structure has a substantially cylindrical shape along an axis (A) and includes at least one axial opening (3) along the axis (A). The base (4) is able to be positioned in the axial opening (3) and comprises, on the inner side, a housing of revolution about the axis (A) and a first fastener (10), and is pierced with at least one through pipe (5) which is axial along the axis (A). The sealing jacket (6) is flexible and tight, and is to cover the inner wall of the structure and comprises a neck (8) able to be received in the housing. The ring is substantial of revolution about the axis (A), and comprises a second fastener (11) able to cooperate with the first fastener (10) in order to assemble the ring (9) with the base (4), on the inner side, by bringing the ring (9) closer to the base (4) along the axis, so as to progressively press the neck (8) between the ring (9) and the base (4). The ring (9) comes closer to the base (4) following a movement parallel to the axis (A) from the inside of the tank (1) toward the outside, and a face (16) of the housing opposite the neck (8) and a face (12) of the ring (9) opposite the neck (8) have a small taper (C).
Patent KR-20220055343-A (KR)
Title: Chimeric antibacterial peptide and use thereof
Inventor: HWANG DO WON
IPC: A01N25/26
Filed: 2020-10-26
Abstract: The present invention relates to a modified antibacterial peptide in which a lipid is bound to an antibacterial peptide having antibacterial activity and a micelle comprising the same. The micelle composed of the antibacterial peptide can effectively remove bacteria by effectively binding the same to the cell membrane of the bacteria. Also, in mice infected with antibiotic-resistant bacteria, the micelle specifically removes the infectious bacteria. The result can be used to detect bacterial infections and develop nanopharmaceuticals based on the antibacterial peptide for treatment.
Patent KR-20210053246-A (KR)
Title: Tricyclic compound and pharmaceutical use thereof
Inventor: PAGIRE HAUSHABHAU SHIVAJI
IPC: A61K31/4545
Filed: 2020-10-30
Abstract: Since a compound which is a tricyclic derivative represented by chemical formula 1 or a pharmaceutically acceptable salt thereof of the present invention has an excellent effect of inhibiting serotonin activity, a pharmaceutical composition comprising the same can be usefully used for preventing or treating metabolic diseases related to serotonin activation.
Patent KR-20220060760-A (KR)
Title: Smart electronic blood pressure meter
Inventor: CHO SUN MAN
IPC: A61B5/00
Filed: 2020-11-05
Abstract: The present invention relates to a smart electronic blood pressure gauge which can provide the operating state of an electronic blood pressure gauge based on a sound signal. The smart electronic blood pressure gauge comprises: a tourniquet enclosing an arm of a subject; a pressure adjustment unit adjusting the pressure applied to the arm of the subject through an air amount injected into the tourniquet; a sensing unit sensing a pulse sound transferred from the tourniquet; a processor receiving and analyzing the pulse sound to calculate and display the highest/lowest blood pressure, and calculating and notifying the first sensing time, continuous sensing time, and final sensing time of the pulse sound; a sound output unit generating and amplifying sound signals corresponding to the first sensing time, continuous sensing time, and final sensing time of the pulse sound to output the sound signals through at least one between a speaker and a headset; and a reporting unit providing the highest/lowest blood pressure and the first/final sensing time identified through the processor in an audiovisual manner, printing the highest/lowest blood pressure and the first/final sensing time on paper, or sharing the highest/lowest blood pressure and the first/final sensing time with an external terminal.
Patent KR-20220065553-A (KR)
Title: Reduction coil for wireless charging and, electromagnetic wave reduction apparatus including reduction coil
Inventor: MOON JUNG ICK
IPC: H01F27/38
Filed: 2020-11-13
Abstract: The present invention relates to a reduction coil and an electromagnetic wave reduction device comprising the reduction coil. More specifically, by disposing the reduction coil between a transmission coil and a reception coil constituting an electromagnetic wave reduction device, an unwanted electromagnetic wave generated in a process of transmitting an electromagnetic wave output from the transmission coil to the reception coil by the reduction coil is reduced.
Patent KR-20220065622-A (KR)
Title: THe concentrate container combined with drinking container
Inventor: LEE SANG ROK
IPC: B65D81/32
Filed: 2020-11-13
Abstract: The present invention relates to a drinking container having an outlet through which drinking water may be discharged, and a concentrate container coupled to the drinking container. The concentrate container comprises: a chamber which contains a concentrate; an outlet which allows the concentrate to be inserted into a drinking container; and a container exit which allows the drinking container and the concentrate container to be coupled such that liquid, in which the concentrate and drinking water are mixed, may be discharged to the outside. The size of the inner diameter of the outlet of the concentrate container is formed to be coupled to the outside of an outlet of the drinking container. A screw thread is provided in the outlet of the concentrate container so that the screw thread is screw-coupled to the screw thread of the outlet of the drinking container, such that additives such as a high-concentration extract and the like may be easily stored and distributed for a long period of time, and distribution costs may be reduced. In addition, the mixing container, in which a predetermined amount of the additives is accommodated, may be conveniently mounted on the drinking container in which drinking contents are accommodated, such that the additives and the drinking contents may be mixed at the optimal ratio in a convenient manner to be consumed at the optimal taste.
Patent KR-20220029275-A (KR)
Inventor: CHUANG CHIA HO
IPC: G03F1/66
Filed: 2020-11-16
Abstract: Provided is a reticle pod cleansing apparatus including a chamber, an air injection unit, a fine dust calculation unit, and a control unit, wherein the chamber has an empty space, and an air inlet and an air outlet connected to the empty space, the air injection unit is installed in the empty space and connected to an air injection device through the air inlet to inject air into the empty space, the fine dust calculation unit is connected to the air outlet to receive air discharged from the outlet and calculate a content of fine dust in the discharged air, and the control unit is connected with the fine dust calculation unit through a signal to transmit the signal when the content of the fine dust in the discharged air calculated by the fine dust calculation unit is lower than a set threshold. According to the present invention, the reticle pod cleansing apparatus accurately and immediately detects whether a reticle pod being cleansed is sufficiently clean during a cleansing process.
Patent KR-20220070896-A (KR)
Title: Method, system and non-transitory computer-readable recording medium for determining recommendable books for users
Inventor: CHO SO HYUNG
IPC: G06Q30/02
Filed: 2020-11-23
Abstract: According to an embodiment of the present invention, a method for determining recommendable books for users comprises the steps of: determining recommending criteria on the basis of at least one of information regarding books read by a first user and input by the first user and information regarding the books read by the first user and input by a second user who is a reading leader of the first user, and evaluation information regarding books not read by the first user and input by other users for each of a plurality of evaluation items; and determining books to be recommended to the first user according to the recommending criteria within the range of books to be recommended to the first user among the books not read by the first user with reference to at least one of the age of the first user, recommended ages for the books not read by the first user, and fields to which the books not read by the first user belong, if the range is determined. Therefore, the method enables more suitable books to be provided to children.
Patent KR-20220072054-A (KR)
Title: 곤충사육용기 자동 반입/반출기
Inventor: LEE YOUNG GIL
IPC: A01K67/033
Filed: 2020-11-24
Abstract: 본 발명에 의한 곤충사육용기 자동 반입/반출기는 좌측에 수직 방향으로 승하강 가능하게 배치된 승하강 부재(20), 상기 승하강 부재(20)의 우측에 전방 또는 후방 방향으로 이동 가능하게 배치된 전후 이동 부재(30), 상기 전후 이동 부재(30)의 우측에 회동 가능하게 배치된 회전 포크부(40), 상기 승하강 부재(20)의 좌측에 연장 배치되어, 상기 승하강 부재(20)를 수직 방향으로 승하강시키고, 곤충사육사의 천장 하부에 연장 배치되어, 상기 승하강 부재(20), 전후 이동 부재(30) 및 회전 포크부(40)를 좌측 또는 우측 방향으로 이동시키는 주행 모듈(50) 및 상기 승하강 부재(20), 전후 이동 부재(30), 회전 포크부(40) 및 주행 모듈(50)의 구동을 제어하는 구동 모듈(60)을 포함하고, 상기 전후 이동 부재(30)는 전후 이동 프레임(33)의 상부에 배치되어, 전력에 의해 구동되는 제1 서보 모터(31), 상기 전후 이동 프레임(33)의 하부에 배치되고, 상기 제1 서보 모터(31)에 축 결합되어, 상기 제1 서보 모터(31)에 의해 회동하는 제1 피니언 기어(32) 및 상기 제1 피니언 기어(32)의 회전력에 의해 전방 또는 후방 방향으로 이동하는 전후 이동 프레임(33)을 포함하는 것을 특징으로 한다.
Patent KR-20220071405-A (KR)
Title: Agricultural support system and method using big data of smart farm
Inventor: KIM HAK CHUL
IPC: G08B21/18
Filed: 2020-11-24
Abstract: The present invention relates to a system and a method for supporting agriculture using smart farm big data. The system of the present invention includes: an interface unit collecting smart farm data including at least one of target crop growth information, environmental information, cultivation facility information, farming information, and management information; an integrated control unit analyzing the collected smart farm data and pre-provided data to generate an artificial intelligence model; and a management server including a management support unit. When smart farm management request information is received, the management support unit analyzes the received smart farm management request information in accordance with the generated artificial intelligence model to generate smart farm decision-making information. According to the present invention, smart farm big data including target crop growth information, environmental information, cultivation facility information, farming information, management information, or the like is collected, a cloud platform built with the collected smart farm big data and artificial intelligence technology are used, and thus agricultural decision making necessary for smart farm operation and management can be effectively supported.
Patent KR-20220077584-A (KR)
Inventor: KIM JUONG HEE
IPC: A23L5/10
Filed: 2020-12-02
Abstract: 본 발명은 감자를 슬라이스(slice) 또는 육면체의 형태로 절단한 감자를 소재로 하는 굳지 않는 감자떡의 제조방법에 관한 것으로, 쌀을 세척하는 단계(1단계); 상기 세척된 쌀을 수침하는 단계(2단계); 상기 수침된 쌀의 물을 제거하는 단계(3단계); 상기 물을 뺀 쌀을 분쇄하는 단계(4단계); 상기 분쇄된 쌀을 1차로 증자하여 반죽을 만드는 단계(5단계); 상기 1차 증자된 반죽에 소금물을 첨가하는 단계(6단계); 상기 소금물이 첨가된 반죽을 2차로 증자하는 단계(7단계); 상기 2차 증자된 반죽을 식히는 단계(8단계); 상기 식혀진 반죽에 밀가루를 첨가하는 단계(9단계); 상기 밀가루가 첨가된 반죽을 펀칭하는 단계(10단계); 상기 펀칭한 반죽에 조림감자를 사용하여 성형하는 단계(11단계)를 포함하는 굳지 않는 감자떡 제조방법에서, 상기 감자는 감자를 절단하는 A단계; 상기 절단된 감자를 찌는 B단계; 상기 찐 감자를 건조하는 C단계; 상기 건조한 감자를 불리는 D단계; 및 상기 건조한 감자를 조림하는 E단계를 통해 제조된 감자인 것을 특징으로 하는, 굳지 않는 감자떡 제조방법을 제공한다.
Patent KR-20220078928-A (KR)
Title: 건설산업현장 근로자를 위한 보험 서비스 시스템 및 방법
Inventor: TAE SUCK HO
IPC: G06Q50/08
Filed: 2020-12-04
Abstract: 본 발명은 소규모 건설현장 및 산업현장의 일용직근로자들에 대하여 산재보험과는 별도로 특화되고, 실제적인 혜택을 바로 받을 수 있도록 건설산업현장의 일용직근로자를 피보험자로 하고, 일용직근로자와 계약된 회사의 계약관계에 따라 보험금 수익자로 일용직근로자나, 해당 근로자의 법정 상속인 또는 회사를 수익자로 하여 보험회사와 보험계약을 체결하여 해당 일용직근로자에 대한 사고 발생 시 일용직근로자와 근로자를 채용한 회사 모두 빠른 보험금 지급에 의한 다양한 보장이 가능하도록 한 건설산업현장 근로자를 위한 보험 서비스 시스템 및 방법에 관한 것이다. 
이러한 본 발명은 건설사의 건설현장에 일용직으로 근무하는 근로자의 스마트폰으로 해당 건설현장에서 일용직으로 근무하는 근무시작시간과 근무종료시간까지 건설사에서 보험회사와 일용직근로자를 피보험자로 하여 개발된 보험상품에 대한 보험계약을 설치된 앱을 통해 가입하는 일용직근로자 스마트폰(100); 일용직근로자를 단기간 임시로 채용하는 건설사에게 일용직근로자에게 일용직근로자의 근무기간과 미리 설정된 시간내에서 가입, 관리 및 보상하는 보험상품을 소개하고, 상기 건설자의 일용직근로자의 보험가입 시 일용직근로자가 보험회사와 직접적인 접촉 없이 보험가입이 가능하도록 하는 앱을 제공하며, 일용직근로자의 보험가입 처리, 근무 모니터링, 모니터링 정보의 저장 및 전송과 가입된 보험상품에 해당되는 사건사고 발생 시 보험회사로 보험금 청구 및 청구된 보험금 입금시, 보험가입시 설정된 수익자에게 보험회사의 보험금을 송금하는 보험관리서버(200); 일용직근로자에게 건설사와의 계약에 따른 보험상품을 제공하는 보험회사 서버(300); 및 채용된 일용직근로자에게 보험회사에서 개발된 일용직근로자의 보험상품을 제공하며, 보험료를 납부하는 건설사 서버(400);를 포함하여 구성됨을 특징으로 하는 건설산업현장 근로자를 위한 보험 서비스 시스템을 제공한다.
Patent KR-20210093152-A (KR)
Title: Apparatus for feeding bag
Inventor: NAKAMOTO SHUICHI
IPC: B65B61/10
Filed: 2020-12-09
Abstract: The present invention relates to a bag supply apparatus. A film roll (5) on which a tube film (51) is wound is supported by a lower rack (23) of a frame (2). The tube film (51) is unwound from a reel unit (4). A table (3) guiding the unwound tube film (51) is provided in an upper part of the same apparatus. The tube film (51) on the table (3) is held by a clip unit (7) and then is withdrawn toward the front end of the table (3), and the withdrawn tube film (51) is pressed and cut by a predetermined length through a pressing type cutter (6). The clip unit (7) includes a clip (71) having a pair of fingers (71A) holding the tube film (51). The clip unit (7) is installed on a sliding unit (8) reciprocating the clip (71).
Patent KR-20220086055-A (KR)
Title: 후드 마운팅 구조
Inventor: KIM EONPYO
IPC: B62D25/12
Filed: 2020-12-16
Abstract: 본 발명은 후드 마운팅 구조에 관한 것으로, 차체의 길이 방향을 따라 구비되는 펜더 에이프론 어퍼 멤버, 차체의 전방 상부에 배치되는 후드 및 상기 후드의 하부와 연결되는 힌지 어퍼 암 및 상기 펜더 에이프론 어퍼 멤버의 측면에 장착되는 힌지 로어 암을 포함하는 후드 힌지를 포함한다.
Patent KR-20220008715-A (KR)
Title: Electronic device including display support structure
Inventor: SHIN MOONCHUL
IPC: G06F1/16
Filed: 2020-12-18
Abstract: Various embodiments of the present invention relate to an electronic device which comprises: a first housing including first space; a second housing including second space and joined to the first housing to be able to slide in a first direction therefrom; a bendable member connected to the first housing, at least partially accommodated in the second space in a slide-in state, and forming the plane at least partially same as the plane of the first housing in a slide-out state; a flexible display including a first portion disposed to be viewed from the outside in the slide-in state and a second portion extended from the first portion and accommodated through at least a part of the bendable member in the second space not to be viewed from the outside; and a support assembly disposed on the first housing to face the second space and pressurize the second housing in a slide-out direction, wherein a part of the first housing is accommodated in the second space not to be viewed from the outside in the slide-in state and the remaining part thereof may be disposed to be viewed from the outside. Other embodiments are possible. According to the present invention, electronic components having different mounting structures can be efficiently disposed.
Patent KR-20220090216-A (KR)
Inventor: LEE MOON BONG
IPC: A24F40/40
Filed: 2020-12-22
Abstract: 본 발명은 에어로졸 생성 물질 가열 장치 및 시스템에 관한 것이다. 본 발명의 일 실시예에 따른 에어로졸 생성 물질 가열 장치는, 본체부, 본체부의 일 영역에 형성되고 에어로졸 생성 제품을 수용하는 케이스가 삽입되는 케이스 수용부, 케이스 수용부에 삽입된 케이스 내의 에어로졸 생성 제품을 가열하기 위한 제1 가열부 및 제1 가열부에 인가되는 전력을 제어하는 제어부를 포함하고, 제1 가열부는 케이스 내부의 열 전도성 시트를 서셉터로 하여 열 전도성 시트를 유도 가열할 수 있다. 
이에 따라, 별도의 서셉터 없이 에어로졸 생성 제품을 수용하는 케이스 내부의 열 전도성 시트를 서셉터로 활용하여 에어로졸 생성 제품을 가열할 수 있고, 사용자 퍼프 이전에 스틱 내 수증기를 제거하여 사용자 만족도를 높일 수 있게 된다.
Patent KR-20220092672-A (KR)
Inventor: SHIN SOO BEOM
IPC: C14C3/28
Filed: 2020-12-24
Abstract: The present invention relates to a deliming agent used in a deliming process in a leather processing process and a deliming treatment method using the same. Related are a deliming agent which does not generate ammonia gas during a deliming process and a deliming treatment method for leather using the same. The deliming agent includes boric acid, formic acid, sodium bisulfite, and sodium formate.
Patent KR-20220091966-A (KR)
Title: High functional infrared optical coating and method thereof
Inventor: IN JEONG HWAN
IPC: C09D5/00
Filed: 2020-12-24
Abstract: The present invention relates to a highly functional infrared optical coating and a method thereof, comprising: an optical base material having a predetermined refractive index so that an infrared region is transmitted; a first coating part formed on an upper part of the optical base material; and a second coating part bonded to the first coating part through a chemical reaction and activating functions including water repellency and anti-fingerprint functions, wherein the first coating part includes a bonding intermediate layer made of any one light-transmitting material of silicon (Si), germanium (Ge), metal oxide (AOX), or a mixture thereof on an uppermost surface bonded to the second coating part, thereby capable of being used effectively in mid-infrared and far-infrared rays.
Patent KR-20220092279-A (KR)
Title: Visual Abstraction Analysis Method of Power System
Inventor: KIM TAE HYOUNG
IPC: G01R21/00
Filed: 2020-12-24
Abstract: The present invention is an analysis method for grasping a state of an analysis target device under an operation of an actual power system. The analysis method implements a node formed by classifying a device to be analyzed on a screen by a factor consisting of at least one of a shape, size and color of a figure, and a size of a font, and visually shows a change of the factor over time. Accordingly, a visual abstraction analysis method of the power system may be provided to determine the characteristics of the device to be analyzed in the power system.
Patent KR-20220061792-A (KR)
Title: Sedentary exercise device
Inventor: YOO WON GYU
IPC: A63B23/02
Filed: 2020-12-28
Abstract: The disclosed technology relates to a sedentary exercise device which comprises: a housing having a rectangular parallelepiped shape with an upper surface inclined at a predetermined angle and a pair of left and right spaces formed inside a body; a first fixing member having one side fixed to an upper part of the left space among the pair of spaces of the housing and extending toward a center of the left space; a second fixing member having one side fixed to an upper part of the right space among the pair of spaces of the housing and extending toward a center of the right space; a third fixing member having one side fixed to a lower part of the left space of the housing and extending toward the center of the left space; a fourth fixing member having one side fixed to a lower part of the right space of the housing and extending toward the center of the right space; a first footplate having an upper part connected to the other side of the first fixing member and a lower part connected to the other side of the third fixing member, and moving in a free direction within the left space; and a second footplate having an upper part connected to the other side of the second fixing member and a lower part connected to the other side of the fourth fixing member, and moving in a free direction within the right space. As a result, the sedentary exercise device can relax a musculoskeletal system without temporal and spatial limitations.
Patent KR-20220093862-A (KR)
Inventor: OH HYE MI
IPC: G09G3/3275
Filed: 2020-12-28
Abstract: A display device comprises: a display panel including a plurality of pixels connected to a data line, a sensing line, and a gate line, and including a light-emitting element and a driving element for controlling a current flowing through the light-emitting element; a data driving circuit for supplying a data voltage and a reference voltage to the pixels through the data line and the sensing line, respectively, and sensing a sensing voltage through the sensing line to output sensing data; a gate driving circuit for supplying a scan signal and a sense signal through the gate line; and a timing controller for controlling the data driving circuit and the gate driving circuit to output input image data through the display panel and to change a data voltage by using the sensing data. The light-emitting element includes an anode electrode connected to a first electrode of the driving element and a cathode electrode for receiving a low potential power supply voltage. The timing controller controls the data driving circuit and the gate driving circuit to initialize the first electrode to a first reference voltage that is higher than the low potential power supply voltage in a state in which the driving element is turned off, and to obtain first sensing data by sensing a potential of the sensing line connected to the first electrode as a first sensing voltage when a first period of time elapses.
Patent KR-20220095682-A (KR)
Inventor: HONG JUNG KUK
IPC: A61H15/00
Filed: 2020-12-30
Abstract: A massage device using a vibration motor according to one embodiment of the present disclosure comprises: a main body part comprising an elastic body and a non-elastic body; a handle part coupled to each of both ends of the main body part; a handle part coupled to each of both ends of the main body part; a roller part rotatably coupled with the main body part as a central axis; a vibration motor disposed inside of the main body, and generating vibration to be transmitted to the roller part; and a control part that controls an operation of the vibration motor. Therefore, the present invention is capable of enabling a massage to be performed effectively.
Patent KR-20200028380-A (KR)
Title: 플라스틱의 표면 특성을 개선하기 위한 방사선-경화성 코팅 조성물
Inventor: DRUJON XAVIER
IPC: C08F230/02
Filed: 2018-07-05
Abstract: 본 발명은 플라스틱 부품의 표면 부착을 개선하기 위한 특정 방사선-경화성 코팅 조성물 및 프라이머 코트로서, 베이스 코트로서 또는 클리어 코트로서의 그것의 용도에 관한 것이다.     조성물은 색소가 있거나 또는 색소가 없을 수 있고, UV 및/또는 EB 에 의해 경화될 수 있다.     본 발명은 또한 이러한 경화로부터 초래되는 경화된 코팅 및 표면 부착이 개선된 코팅된 플라스틱 기판에 관한 것이다.
Patent KR-20200022011-A (KR)
Title: 전지 외통캔용 강판, 전지 외통캔 및 전지
Inventor: SUTO MIKITO
IPC: C22C38/00
Filed: 2018-07-18
Abstract: 후도금법에 이용하는 전지 외통캔용 강판으로서, 퀀칭강으로 만들어진 성형형을 사용하여 프레스 성형을 반복하여 행하는 경우에도 흠집의 발생이 억제되고, 또한, 얻어지는 전지 외통캔의 내식성 및 내좌굴성도 우수한 전지 외통캔용 강판, 그리고, 이를 이용한 전지 외통캔 및 전지를 제공한다.  상기 전지 외통캔용 강판은, 강판의 양면의 표층에 Fe-Ni 확산층을 갖고, 상기 강판의 Nb 함유량이, 0.010질량％ 이상 0.050질량％ 이하이고, 상기 Fe-Ni 확산층은, 상기 강판의 편면당의 Ni 환산의 부착량이, 50㎎/㎡ 이상 500㎎/㎡ 이하이다.