baber/WOPTO huggingface dataset:
Patent WO-2020170465-A1 (WO)
Inventor: TAKEDA SHOICHIRO
IPC: G06T7/215
Filed: 2019-05-31
Abstract: An image processing device is provided with: a change detection unit for detecting a phase change with a predetermined change amount from phase changes in a partial area of an edge image having a predetermined resolution; a change amount adjustment unit for adjusting the change amount of the detected phase change; an adjustment image generation unit for generating, on the basis of the phase change acquired by adjusting the change amount of the phase change, an edge image having a predetermined resolution, for which a change amount of a movement change is adjusted; and an area decision unit for deciding, on the basis of the edge image having the predetermined resolution, for which the change amount of the movement change is not adjusted and the edge image having the predetermined resolution, for which the change amount of the movement change is adjusted, a new partial area of an edge image having a new predetermined resolution.
Patent WO-2019235472-A1 (WO)
Title: Buckle support structure
Inventor: ENDOU TOORU
IPC: B60R22/22
Filed: 2019-06-04
Abstract: This buckle device comprises: buckles that are adjacently positioned in a housing hole of a rear seat; a support bracket that is fixed to a floor panel and supports a buckle; a linking belt that links a buckle to the support bracket; and a retaining member that covers each buckle and retains the position of said buckle.
Patent WO-2019240247-A1 (WO)
Title: Undifferentiated cell detection method
Inventor: TANIGUCHI HIDEKI
IPC: C12Q1/6881
Filed: 2019-06-14
Abstract: Provided is a marker gene capable of detecting the persistence/admixture of undifferentiated cells in a differentiated cell population. Undifferentiated cells present in a differentiated cell population are detected by using at least one gene selected from the group consisting of ESRG, VSNL1, THY1, SFRP2, SPP1, USP44, and CNMD as an undifferentiation marker. A method for detecting undifferentiated cells, a method of use as an undifferentiation marker, and an undifferentiated cell detection kit. Also provided is a method for selecting an undifferentiated cell line.
Patent WO-2020012888-A1 (WO)
Title: Monitoring record creation support system and monitoring record creation support method
Inventor: OKADA TAKASHI
IPC: G16H20/60
Filed: 2019-06-18
Abstract: This monitoring record creation support system is provided with: a position detecting unit which, in a state in which a plurality of objects (food) provided as a meal to a monitored person are disposed in a plurality of regions (a plurality of eating utensils), detects the position of each of the plurality of regions on the basis of a first image of the plurality of regions captured before the meal, and detects the position of each of the plurality of regions on the basis of a second image of the plurality of regions captured after the meal; and an ingested amount measuring unit which calculates first amount data enabling the amounts of each of the plurality of objects before the meal to be identified on the basis of the positions of each of the plurality of regions before the meal, calculates second amount data indicating the amounts of each of the plurality of objects after the meal on the basis of the positions of each of the plurality of regions after the meal, and calculates the ingested amounts of each of the plurality of objects on the basis of each set of amount data.
Patent WO-2019245011-A1 (WO)
Inventor: SENGMANY THOMAS
IPC: A61Q19/00
Filed: 2019-06-14
Abstract: The present invention relates to a composition comprising: (a) at least one hydrophobically modified alkylcellulose; (b) at least one amphiphilic polymer comprising at least one hydrophilic unit and at least one hydrophobic unit; (c) at least one alkyl phosphate; and (d) water, wherein the pH of the composition is less than 7.0, preferably less than 6.0, more preferably less than 5.0, and even more preferably less than 4.0. The composition according to the present invention is stable, and can suitably include a cosmetically active ingredient which is unstable in neutral or alkaline conditions. Thus, the cosmetically active ingredient causes, for example, no decomposition.
Patent WO-2020004425-A1 (WO)
Inventor: HORIKOSHI FUMIAKI
IPC: C12N5/10
Filed: 2019-06-25
Abstract: ＭＤＣＫ細胞を宿主とするインフルエンザウイルスの培養方法において、より効率的にインフルエンザウイルスを培養する方法を提供する。 ＭＤＣＫ細胞が対数増殖期を超えた後、プロテアーゼを含まない培地条件下でインフルエンザウイルスを接種することによる。 プロテアーゼによるＭＤＣＫ細胞の凝集や損傷を防ぎ、効率的にインフルエンザウイルスを培養することができる。更に、鶏卵を宿主としてインフルエンザウイルスを増殖させるよりも、高い収量のウイルスタンパク質が予想される。
Patent WO-2020009028-A1 (WO)
Inventor: OKABAYASHI YOSHIFUMI
IPC: G03G21/00
Filed: 2019-06-28
Abstract: 表示制御装置は、表示部と表示制御部とを備える。表示制御部は、第１画像（７０３ａ）～（７０３ｆ）と第２画像とを表示するように、表示部を制御する。第１画像（７０３ａ）～（７０３ｆ）は、第２画像の上位層に表示される。第１画像（７０３ａ）～（７０３ｆ）は、カテゴリー項目を示す。第２画像は、カテゴリー項目に属する設定項目を示す。表示制御部は、設定項目への入力に応じて、第１画像（７０３ａ）～（７０３ｆ）に所定画像（７０５）を表示するように、表示部を制御する。
Patent WO-2020022141-A1 (WO)
Title: Plasma processing device
Inventor: KANEKO HIROFUMI
IPC: H01L21/3065
Filed: 2019-07-17
Abstract: The present invention provides a plasma processing device having a vacuum container having a controllable internal pressure, a gas supply means, an electrode provided inside the vacuum container and having a substrate placed on an upper surface, and an antenna for inductive coupling arranged facing the electrode, wherein: one end of the antenna for inductive coupling is connected to a high-frequency power supply via a matching circuit, and the other end is an open end; the length of the antenna is less than 1/2 λ of a RF frequency wavelength (λ); an impedance adjustment circuit connected in parallel to the antenna is connected to the RF power feed side of the antenna; and the reactance component of the combined impedance due to the impedance adjustment circuit can be adjusted, with respect to the RF frequency supplied to the antenna, from a capacitive load to an inductive load.
Patent WO-2020026962-A1 (WO)
Title: Power supply device and vehicle equipped with same
Inventor: TERAUCHI SHINOBU
IPC: H01M50/264
Filed: 2019-07-26
Abstract: In order to stably maintain the fastening of a layered battery comprising a plurality of secondary battery cells stacked on each other, a power supply device (100) is provided with: a plurality of secondary battery cells (1) each having a flat rectangular form; a pair of end plates (20) which respectively cover both end side surfaces of the layered battery (10) that comprises the plurality of the secondary battery cells (1) stacked on each other; and a plurality of fastening members (30) for fastening the end plates (20) together. Each of the plurality of fastening members (30) has a plate-like form that extends along the direction of the stacking of the plurality of secondary battery cells (1), and is arranged on surfaces of the layered battery (10) which face each other, and has opened through-holes (32) respectively formed at both ends of the plate-like form. Each of the pair of end plates (20) has pipe parts (21) each of which is inserted into a through-hole formed in each of a pair of fastening members (30) that are respectively arranged on the surfaces of the layered battery (10) which face each other, among the plurality of fastening members (30).
Patent WO-2021024500-A1 (WO)
Title: 端末
Inventor: HARADA HIROKI
IPC: H04J99/00
Filed: 2019-08-08
Abstract: 端末は、第１スロットパターンを用いる場合と異なる変調方式（FTN）が適用される場合に用いられる第２スロットパターンを有する無線フレームを受信する。端末は、第２スロットパターンでも、第１スロットパターンと同じ参照サブキャリア間隔を用いて、無線フレームにおける時分割復信に従った上りリンク及び下りリンクの設定を適用する。
Patent WO-2020039999-A1 (WO)
Title: Method for manufacturing all-solid-state battery
Inventor: MATSUNAGA MASAFUMI
IPC: H01M10/0562
Filed: 2019-08-13
Abstract: [Problem] To lower electrical resistance by increasing the interfacial surface area and the adhesion between a current collector and an active material or an electrolyte, or between the active material and the electrolyte in an all-solid-state battery. In addition, to improve battery performance by eliminating or minimizing residual carbon originating from a binder. [Solution] According to the present invention, a slurry, composed of an electrode active material and a solvent, and a slurry, composed of electrolyte particles and a solvent, can be impacted against a target and thereby attached thereto to form a high-density layer and improve adhesion. Moreover, residual carbon is eliminated or minimized by eliminating or minimizing the content of binders, thereby improving battery performance.
Patent WO-2020050167-A1 (WO)
Title: Adhesive tape for dicing and method for manufacturing semiconductor chips
Inventor: MASUDA AKIYOSHI
IPC: H01L21/301
Filed: 2019-08-30
Abstract: An adhesive tape for dicing, said adhesive tape comprising a substrate and a silicone adhesive layer laminated on the substrate, to be used in dividing a semiconductor material, which comprises multiple semiconductor elements coated with a coating material, into multiple semiconductor chips, wherein: the silicone adhesive layer comprises an addition reaction-type silicone adhesive as a main agent together with a photoresponsive platinum (Pt) catalyst and a crosslinking agent for the addition reaction-type silicone adhesive; the ratio by mass of a silicone gum to a silicone resin ranges from 35/65 to 50/50; and the content of a silicone gum having an alkenyl group ranges from 35 mass% to 50 mass% inclusive relative to the total mass of the silicone gum and the silicone resin.
Patent WO-2020059466-A1 (WO)
Title: 撒積貨物船の船艙壁面清掃装置
Inventor: TAKASAKI TOSHIYUKI
IPC: B63B25/04
Filed: 2019-08-27
Abstract: 撤積貨物船の船艙壁面清掃作業の安全化、省力化を図ることができる船艙壁面清掃装置を提供する。伸縮式のアーム（最長伸張時は船艙の高さにほぼ相当する長さとする）と、船艙床面上に置かれ該アームの下端部を支持する基部台車と、ハッチコーミング上に据えられ、該アームを吊上げ保持する吊上げワイヤーを留める上部懸架台と、で構成され、該アームを船艙壁面に立て掛けた状態で該アームの長さを変化させることにより、該アーム先端を船艙壁面の高所に至るまで任意の高さに接触させて、そこに取付けた各種清掃器具にて船艙壁面の清掃を可能とする。
Patent WO-2020079991-A1 (WO)
Title: Battery material lamination device
Inventor: YAMASHITA MANABU
IPC: H01M10/04
Filed: 2019-09-10
Abstract: The purpose of the present invention is to provide a battery material lamination device capable of laminating battery materials at high speed. The buttery material lamination device comprises a conveyance mechanism 1 that conveys a workpiece in a predetermined direction, a coating mechanism 2 that applies a bonding member B onto the surface of the workpiece W being conveyed by the conveyance mechanism 1, and a lamination mechanism 3 that constitutes a lamination body SW by laminating the workpiece W conveyed by the conveyance mechanism 1. When the workpiece W conveyed by the conveyance mechanism 1 is laminated on the lamination mechanism 3, the surface coated with the bonding member B of the workpiece W is stuck to the surface of the lamination body SW of the workpiece W constituted in the lamination mechanism 3.
Patent WO-2020059584-A1 (WO)
Inventor: HOASHI MASAKAZU
IPC: H04W84/12
Filed: 2019-09-11
Abstract: This control method, which is implemented by a refrigerator application installed in a mobile terminal (110), includes: an instruction step for instructing an operating system of the mobile terminal (110) to connect to a refrigerator that is operating in a software access font mode; and a transmission step for transmitting, to the refrigerator, the SSID of an access point and a password for connecting to the access point. The SSID of the refrigerator that operates in the software access font mode and a password for connecting to the refrigerator that operates in the software access font mode are previously built into the refrigerator application.
Patent WO-2020066727-A1 (WO)
Inventor: YAKUSHIJIN TADAYUKI
IPC: F16K7/17
Filed: 2019-09-17
Abstract: Provided is a diaphragm valve with which a Cv value can be adjusted during assembly of the diaphragm valve. The diaphragm valve has a valve body (2), a diaphragm (2f), an actuator (4), a bonnet (3), a stem (8), and a diaphragm presser (7). The bonnet (3) is provided with a through-hole (3e) into which a female thread (3d) coaxial with the stem (8) is cut, a cylindrical body (5) having a male thread (5a) cut into the outer surface is threaded together with the female thread (3d) and screwed into the through-hole (3e), the stem (8) is inserted through the cylindrical body (5), a diaphragm (2f)-side end surface of the cylindrical body (5) protrudes toward the diaphragm (2f) past a diaphragm (2f)-side opening surface of a through-hole (5b), a stem (8)-side end surface of the diaphragm presser (7) and the diaphragm (2f)-side end surface of the cylindrical body (5) come into contact, and the positions of the contacting surfaces along the stem axis are adjusted by the threading together of the male thread (5a) and the female thread (3d).
Patent WO-2020090352-A1 (WO)
Title: Subject tracking device, subject tracking method, and program
Inventor: MATSUMURA MASAAKI
IPC: H04N5/232
Filed: 2019-10-07
Abstract: This subject tracking device is provided with: a first histogram generation unit that generates a first histogram which indicates the appearance frequency of image feature amounts in a subject region for each of segments and sub segments of the image feature amounts; a second histogram generation unit that generates, for each of candidate regions, a second histogram which indicates the appearance frequency of image feature amounts in the candidate regions for each of segments and sub segments of the image feature amounts; a difference deriving unit that compares, for each segment and sub segment, the first histogram and the second histogram, and derives, for each candidate region, a difference sum value of the appearance frequency of the image feature amounts in the first histogram and the second histogram; and a region selecting unit that selects, from among the respective candidate regions, a candidate region having the minimum difference sum value. The sub segments are determined so as to be bridged across the boundaries between the segments.
Patent WO-2020194811-A1 (WO)
Inventor: SHIMOYAMA TAKESHI
IPC: H01H3/12
Filed: 2019-10-15
Abstract: In order to minimize wobbling of a button and limit reaction force when the button is pushed, this hinge structure for a button (4) comprises: a contact section (4G) brought into contact with a substrate (5) on which the button (4) is arranged; a button body (4B) in which the relative positional relationship with the substrate (5) changes; a first hinge (4D) that is flexible and that has one end connected to the button body (4B) and the other end connected to the contact section (4G); and a second hinge (4E) that is flexible, that has one end connected to a position in the button body (4B) on the side opposite from that on which the first hinge (4D) is connected to the button body (4B), and that has the other end connected to the first hinge (4D) at a position in the button body (4B) on the side on which the first hinge (4D) is connected.
Patent WO-2021074969-A1 (WO)
Inventor: KOGA YOHEI
IPC: H01Q9/42
Filed: 2019-10-15
Abstract: Provided are: an antenna device that suppresses a decrease in radiation efficiency of an antenna even when metal is present in the vicinity of the antenna; and a wireless communication device on which the antenna device is mounted. This antenna device comprises: a ground substrate; a feeding point provided on the ground substrate; a plate-shaped first conductor element which has one end electrically connected to the feeding point and is parallel to the ground substrate; a plate-shaped second conductor element which is disposed between the first conductor element and the ground substrate, has one end electrically connected to the ground substrate, and is parallel to the ground substrate; and a connecting portion for electrically connecting the other end of the first conductor element and the other end of the second conductor element, wherein the width of the first conductor element is greater than the width of the second conductor element, and the lengths of the first conductor element and the second conductor element are 1/2 of the wavelength of the radio wave for operating the antenna device.
Patent WO-2020085251-A1 (WO)
Inventor: TSUJI NAOKO
IPC: H01L25/07
Filed: 2019-10-18
Abstract: Provided is a technique within a semiconductor device manufacturing method in which semiconductor elements are layered in a multilayered manner by layering wafers that have semiconductor elements formed therein, said technique being appropriate for efficiently manufacturing semiconductor devices while suppressing warping of a wafer layered body. This semiconductor device manufacturing method includes a preparation step, a thinning step, and a bonding step. In the preparation step, a plurality of first wafer layered bodies are prepared. Each first wafer layered body includes a first wafer and a second wafer each having an element formation surface and a back surface opposite therefrom, and has a layered structure in which the element formation surface sides of the first and second wafers are bonded together. In the thinning step, the first wafers of the first wafer layered bodies are thinned, to form first wafer layered bodies having thinned first wafers. In the bonding step, the thinned first wafer sides of two first wafer layered bodies that have passed through the thinning step are bonded together to form a second wafer layered body.
Patent WO-2020158077-A1 (WO)
Inventor: UENO YOSUKE
IPC: H04N5/357
Filed: 2019-10-25
Abstract: La présente invention réduit le bruit provoqué par la gigue dans un élément d'imagerie à semi-conducteurs ayant un CAN à une seule pente fourni à celui-ci.　Cet élément d'imagerie à semi-conducteurs est équipé d'une unité de génération de signal de référence, d'un circuit de filtre et d'un convertisseur analogique-numérique. L'unité de génération de signal de référence génère un signal de référence prédéterminé qui est synchronisé avec un signal d'horloge prédéterminé. Le circuit de filtre permet le passage d'une composante de fréquence spécifique entre la gigue du signal d'horloge. Le convertisseur analogique-numérique convertit un signal analogique en un signal numérique, à l'aide de la composante de fréquence spécifique et du signal de référence.
Patent WO-2020095763-A1 (WO)
Title: Composition for low dielectric heat conductive material and low dielectric heat conductive material
Inventor: LI JIANGUANG
IPC: H05K7/20
Filed: 2019-10-29
Abstract: The purpose of the present invention is to provide a novel low dielectric heat conductive material, etc. that do not use a hollow filler. This composition for a low dielectric heat conductive material comprises: an acrylic resin composition that includes one or more (meth)acrylates and an acrylic polymer formed by polymerizing one or more (meth)acrylates; crystalline silica that has an average particle size of 20 μm or more; a metalhydroxide that has an average particle size of 15 μm or less; a polyfunctional monomer; and a polymerization initiator. The crystalline silica, metalhydroxide, polyfunctional monomer, and polymerization initiator are blended, respectively, in amounts of 330 to 440 parts by mass, 90 to 190 parts by mass, 0.01 to 0.5 parts by mass, and 0.6 to 1.3 parts by mass relative to 100 parts by mass of the acrylic resin composition.
Patent WO-2021117211-A1 (WO)
Title: 細胞培養装置
Inventor: MINAMI TATSUYA
IPC: C12M1/02
Filed: 2019-12-13
Abstract: 培養槽（３）内に培地（Ｗ）と共に収容されている細胞（Ｓ）を観察する観察部（７）と、培養槽（３）内の培地（Ｗ）を撹拌する撹拌機構（５）と、観察部（７）に隣接して配され、培養槽（３）内の前記細胞（Ｓ）を回収する回収部（９）と、観察部（７）によって所望の特徴を有する前記細胞（Ｓ）を検出し、検出した所望の特徴を有する前記細胞（Ｓ）を回収部（９）によって回収する制御部（１１）とを備える細胞培養装置（１）である。
Patent WO-2020188921-A1 (WO)
Title: Précurseur de polybenzoxazole contenant ester-diamine, composition de résine photosensible, film sec, produit durci, et composant électronique
Inventor: AKIMOTO Maho
IPC: C08G73/22
Filed: 2019-12-17
Abstract: Le problème décrit par la présente invention est de produire une composition de résine photosensible comprenant un précurseur de polybenzoxazole contenant un ester-diamine qui atteint un fort contraste de dissolution et qui est en outre résistant à la fissuration et au gauchissement. La solution selon l'invention porte sur un précurseur de polybenzoxazole contenant un ester-diamine qui est caractérisé en ce qu'il comporte une structure représentée par la formule générale (1) et/ou (2) et une structure représentée par la formule générale (3).
Patent WO-2020129969-A1 (WO)
Inventor: MISAKI SHINJI
IPC: B60R11/02
Filed: 2019-12-17
Abstract: 作業車は、運転部を覆うキャビンと、衛星からの位置情報を受信する受信装置１１と、受信装置１１を支持するステー２２と、を備えている。受信装置１１は、キャビンのルーフ１２の上方に配置され、かつ、ステー２２を介してキャビンのキャビンフレーム１５に支持されている。
Patent WO-2021130921-A1 (WO)
Inventor: KUROHA Takashi
IPC: B61B13/00
Filed: 2019-12-25
Abstract: L'invention concerne un système de traitement d'informations, un procédé de traitement d'informations, un support d'enregistrement et un système de transport permettant de réaliser l'automatisation du transport de cargaison tout en garantissant un niveau élevé de sécurité. Le système de traitement d'informations comprend : une unité de génération qui génère des informations d'instruction de transport pour fournir une instruction, concernant le transport de cargaison, à un appareil de transport qui se déplace de façon autonome dans un tunnel et transporte la cargaison ; et une unité de transmission qui transmet les informations d'instruction de transport à l'appareil de transport.
Patent WO-2020194962-A1 (WO)
Title: Display device
Inventor: KATSUTA TADAYOSHI
IPC: G09G3/20
Filed: 2019-12-25
Abstract: The present invention comprises a drive signal generation circuit (23) for generating a gate drive signal ENB, a scan line drive circuit (22) for supplying the gate drive signal to a scan line, and a first wiring (L1) for supplying the gate drive signal from the drive signal generation circuit (23) to the scan line drive circuit (22). The drive signal generation circuit (23) includes a first potential supply circuit (Tr1, Drv1) for supplying a first potential (VGL) that is equal to or less than the OFF potential of a pixel transistor to the first wiring (L1), a second potential supply circuit (Tr2, Drv2) for supplying a second potential (VGL2) that is lower than the first potential (VGL) to the first wiring (L1), a third potential supply circuit (Tr3, Drv3) for supplying a third potential (GND) that is higher than the first potential (VGL) to the first wiring (L1), and a fourth potential supply circuit (Tr4, Drv4) for supplying a fourth potential (VGH2) that is equal to or greater than the ON potential of the pixel transistor to the first wiring (L1).
Patent WO-2020138253-A1 (WO)
Inventor: HIRANO YASUHIRO
IPC: E21B43/26
Filed: 2019-12-25
Abstract: 本発明の課題は、一定時間（３０分～５時間程度）は完全溶解せずに膨潤するので坑井の亀裂に対して十分な寒栓性を発揮し、かつ一定時間経過後は４０～６０℃の低温でも速やかに溶解除去されるダイバーティングエージェントを提供することである。本発明は、変性ポリビニルアルコール系樹脂を含有するダイバーティングエージェントに関する。
Patent WO-2021131004-A1 (WO)
Title: 荷物管理システム、荷物管理方法、荷物管理装置、及びコンピュータ読み取り可能な記録媒体
Inventor: KITADA Masato
IPC: G06Q10/08
Filed: 2019-12-26
Abstract: 荷物管理システム１０は、取得した第一の生体情報を用いて、第一の生体情報に関連付けられた利用者１１を識別するための人物識別情報を特定する特定部２１と、特定された人物識別情報に、荷物１５の荷物識別情報と、配送元１６と異なる業種の配送先１７を表す配送先情報とを関連付ける関連付け部２２と、荷物識別情報と配送先情報とに基づいて、荷物１５に取り付ける配送伝票１４を作成する作成端末５０が、配送伝票１４を作成するために用いる配送伝票情報を生成する生成部２３と、取得した第二の生体情報を用いて、第二の生体情報に関連付けられた荷物識別情報を選定する選定部２４と、選定された荷物識別情報を、出力端末６０に出力させるための出力情報を生成する出力情報生成部２５とを有する。
Patent JP-WO2018154765-A1 (JP)
Title: 天井パネルおよび空気調和機
IPC: F24F13/20
Filed: 2017-02-27
Abstract: 天井パネルは、複数のコーナー部を有する枠体と、コーナー部を取り外し可能に覆う複数のコーナーカバーと、を備えている。各コーナー部は、枠体の外郭を規定するとともに複数の係合孔を有する外周部と、外周部よりも内側に位置されたねじ受け部と、ねじ受け部にねじ込まれたカバー固定ねじと、を有する。各コーナーカバーは、係合孔に取り外し可能に引っ掛かる複数の係合爪と、ねじ受け部に向けて突出されたねじ固定部と、を有する。ねじ固定部は、カバー固定ねじの軸部が貫通するとともにねじ固定部の先端に開口されたガイド溝と、ガイド溝を囲むようにねじ固定部から突出されたガイド壁部を有する。ガイド壁部は、カバー固定ねじを締め付けた時に、カバー固定ねじの頭部の外周縁に接することでコーナーカバーをコーナー部の上の正規な位置に向けて移動させる。
Patent JP-WO2018155610-A1 (JP)
Title: 熱間鍛造用棒鋼
IPC: B22D11/00
Filed: 2018-02-23
Abstract: 優れた熱間加工性を有し、熱間鍛造後において高い降伏強度、高い疲労強度、優れた被削性、及び、優れたクラッキング性を示す熱間鍛造用棒鋼を提供する。本開示による熱間鍛造用棒鋼は、質量％で、Ｃ：０．０５〜０．４０％、Ｓｉ：０．０５〜０．５０％、Ｍｎ：１．５１〜３．５０％、Ｐ：０．０１０〜０．１００％、Ｓ：０．３０％以下、Ｃｒ：０．０５〜２．５０％、Ｖ：０．１０〜０．７５％、Ｔｉ：０．００５％〜０．２５０％、Ａｌ：０．００５〜０．０６０％、Ｎ：０．００２〜０．０２０％を含有し、残部がＦｅ及び不純物からなり、式（１）を満たす化学組成を有する。鋼中の２０μｍ以上の円相当径を有するＴｉＮの数密度は０．３〜４．０個／ｍｍ２である。０．４８≦Ｃ＋０．１１Ｍｎ＋０．０８Ｃｒ＋０．７５Ｖ＋０．２０Ｍｏ≦１．５０ （１）ここで、式中の元素記号には、対応する元素の含有量（質量％）が代入される。