baber/WOPTO huggingface dataset:
Patent WO-2021010560-A1 (WO)
Inventor: PARK JU-CHAN
IPC: H01L51/52
Filed: 2020-02-03
Abstract: A display device including a first pixel area in which a first pixel is positioned and a second pixel area in which a second pixel is positioned can comprise: a lower connection wiring for connecting the first pixel and the second pixel and crossing the first pixel area and the second pixel area; an inorganic insulation layer which is disposed on the lower connection wiring and which has a groove between the first pixel area and the second pixel area; and an organic insulation layer for filling the groove of the inorganic insulation layer.
Patent WO-2021187636-A1 (WO)
Title: Phase noise compensation method and device
Inventor: KIM SUNAM
IPC: H04L27/26
Filed: 2020-03-18
Abstract: Disclosed is a phase noise compensation method performed by a terminal. The terminal may: receive a signal, wherein the signal is transmitted via multiple symbols; estimate phase noise for each of multiple phase noise estimation sections included in the multiple symbols in the time domain, wherein each of the multiple phase noise estimation sections is included in cyclic prefixes (CPs) included in the respective multiple symbols; and perform the phase noise compensation on the multiple symbols in the time domain on the basis of the estimated phase noise.
Patent WO-2020226313-A1 (WO)
Inventor: LEE JIN-SEOB
IPC: A41B13/06
Filed: 2020-04-27
Abstract: The present invention relates to an infant carrier. Specifically, according to one embodiment of the present invention, an infant carrier may be provided, the infant carrier comprising: a wearable waist member which is provided so as to be worn on a user's waist and comprises a first wearable part and a second wearable part; a tightening unit, which is provided on the wearable waist member, for adjusting, when the wearable waist member is worn on the user's waist, a distance between the first wearable part and the second wearable part; a cover, which is detachably connected to the wearable waist member, for covering at least a portion of the tightening unit; and a back panel which is detachably attached to one surface of the cover and can support the user's waist.
Patent WO-2020231080-A1 (WO)
Inventor: KANG TAE HUN
IPC: B25J9/16
Filed: 2020-05-07
Abstract: One embodiment of the present invention provides an intersection point pattern recognition system using sensor data of a mobile robot, comprising: a mobile robot that autonomously drives by using sensor data received from a sensor unit and an intersection point pattern recognition model provided by a management server; and the management server that receives usage environment information of the mobile robot and generates the intersection point pattern recognition model of the mobile robot to provide the intersection pattern recognition model to the mobile robot, wherein the management server comprises: a map generation unit for receiving the usage environment information of the mobile robot and generating a route map of the mobile robot on the basis of the usage environment information; a normalization unit for generating a virtual map by normalizing the route map according to a preset rule; and a learning unit for generating the intersection point pattern recognition model by using the virtual map and the sensor data of the mobile robot as learning data.
Patent WO-2021006608-A1 (WO)
Inventor: CHO NAMJUN
IPC: H04W76/16
Filed: 2020-07-08
Abstract: An electronic device including a housing, at least one antenna disposed inside the housing or disposed on at least a part of the housing, a first transceiver configured to generate a first signal corresponding to a first communication network and transmit the first signal to the at least one antenna, a second transceiver configured to generate a second signal corresponding to a second communication network and transmit the second signal to the at least one antenna, a first coupler electrically connected between the at least one antenna and the first transceiver, a first communication processor operatively connected to the first transceiver, and a second communication processor operatively connected to the second transceiver, wherein the second communication processor is configured to control a transmission power of the second signal, at least partially based on a signal received via feedback by the first coupler.
Patent WO-2021034052-A1 (WO)
Inventor: PARK JINHYUN
IPC: H04L1/18
Filed: 2020-08-14
Abstract: L'invention concerne une technique de communication et un système pour intégrer un système de communication 5G avec une technologie de l'Internet des objets (IdO) pour prendre en charge un débit de transfert de données supérieur après un système 4G. La présente invention peut s'appliquer à des services intelligents basés sur une technologie de communication 5G et une technologie liée à l'IdO (tels qu'une maison intelligente, un bâtiment intelligent, une ville intelligente, une voiture intelligente ou une voiture connectée, des soins de santé, l'enseignement numérique, le commerce de détail, les services de sécurité et de sûreté, etc.).
Patent WO-2022034960-A1 (WO)
Title: Appareil de nettoyage de roue
Inventor: KIM KANG
IPC: B08B3/02
Filed: 2020-09-17
Abstract: La présente invention concerne un appareil de nettoyage de roue permettant à un utilisateur de fauteuil roulant en difficulté, impliquant avec ses membres inférieurs, de nettoyer les roues d'un fauteuil roulant après avoir été à l'extérieur, sans l'aide d'une autre personne. Un mode de réalisation de la présente invention fournit un appareil de nettoyage de roue pour nettoyer les roues d'un fauteuil roulant, l'appareil de nettoyage de roue comprenant : un module de guidage qui guide un fauteuil roulant pour pénétrer dans un emplacement prédéterminé ; un module de nettoyage qui reçoit l'énergie afin de nettoyer les roues d'entraînement et les roues de direction du fauteuil roulant simultanément à l'aide d'un procédé de friction ; et un module d'entraînement qui transfère l'énergie au module de nettoyage à l'aide du frottement entre le module d'entraînement et les roues de direction.
Patent WO-2021071210-A1 (WO)
Title: Holographic light guide plate
Inventor: KHO EUN HO
IPC: G02B5/32
Filed: 2020-10-06
Abstract: [Abstract] A holographic light guide plate according to an embodiment of the present invention comprises: a light guide unit for guiding light; a first holographic optical element arranged on one surface or an opposite surface of the light guide unit so that light output from a light source can be input and guided onto the light guide unit, to thereby diffract the input light; a second holographic optical element arranged on one of the one surface and the opposite surface of the light guide unit to receive light guided through the light guide unit by being diffracted from the first holographic optical element, and to partially diffract the received light so that the received light is directed to the other of the one surface and the opposite surface of the light guide unit; a third holographic optical element arranged on a surface opposite to a surface on which the second holographic optical element of the light guide portion is arranged to receive light diffracted from the second holographic optical element and to guide, by diffraction, the received light to a region different from regions in which the first and second holographic optical elements are arranged on the light guide portion; and a fourth holographic optical element receiving the light diffracted from the third holographic optical element and outputting, by diffraction, the received light, from the light guide unit.
Patent WO-2021137419-A1 (WO)
Title: Fundamental frequency extraction method based on dj conversion
Inventor: KIM DONG JIN
IPC: G10L25/18
Filed: 2020-11-12
Abstract: According to an embodiment of the present invention, a method of extracting a fundamental frequency of an input sound comprises the steps of: generating, for the input sound, a DJ conversion spectrogram indicating a frequency corresponding to a natural frequency of each of a plurality of springs and an estimated pure tone amplitude according to a plurality of time points by performing a DJ conversion for calculating the estimated pure tone amplitude by modeling vibrational motions of the plurality of springs having different natural frequencies; calculating, for each natural frequency of the DJ conversion spectrogram, a fundamental frequency fitness on the basis of a moving average of the estimated pure tone amplitude or a moving standard deviation of the estimated pure tone amplitude; and extracting the fundamental frequency on the basis of a maximum value of the fundamental frequency fitness according to the natural frequency for each time point.
Patent WO-2021107667-A1 (WO)
Inventor: KIM AHHYUN
IPC: H04M1/725
Filed: 2020-11-27
Abstract: Disclosed is an electronic device. The electronic device comprises: a memory in which an application is stored; a display; a position sensor; and a processor which executes the application to acquire user position information corresponding to a user terminal position sensed by the position sensor, and control a display to provide a UI for controlling a cycle time of a washing apparatus, the UI being provided on the basis of information related to the cycle time of the washing apparatus and the user position information.
Patent WO-2022114285-A1 (WO)
Inventor: SONG KI DONG
IPC: H04L25/03
Filed: 2020-11-27
Abstract: A wireless data transmission method according to one embodiment may include the operations of: receiving, on the basis of a control signal, a first display signal having a first interface from a transmission end; extracting necessary data from the received first display signal; converting the first display signal into an RF signal of an extremely high frequency on the basis of the necessary data; transmitting and/or receiving the RF signal of the extremely high frequency; and converting, at a reception end, the received RF signal of the extremely high frequency into a second display signal having a second interface. A wireless data transmitter and receiver can use different communication protocols, and the transmitter and the receiver may include an operation of detecting a communication protocol used by a counterpart transmitter and receiver, so as to convert a signal into a corresponding protocol, and thus transmit or receive the converted signal.
Patent WO-2022092440-A1 (WO)
Inventor: LEE KANGWOOK
IPC: G06N3/08
Filed: 2020-12-23
Abstract: 전자 장치 및 그 제어 방법이 개시된다. 본 전자 장치는, 신경망 모델을 저장하는 메모리 및 입력 데이터를 상기 신경망 모델에 입력하여 출력 데이터를 획득하는 프로세서를 포함하고, 상기 신경망 모델은, 입력된 제1 모달리티에 기초한 제1 출력 데이터 및 입력된 제2 모달리티에 기초한 제2 출력 데이터의 비교에 기초하여, 상기 제2 모달리티가 입력되면, 상기 제1 출력 데이터에 대응되는 상기 제1 모달리티를 출력하도록 학습된 모델이며, 상기 제2 모달리티는, 적어도 하나의 마스킹 요소를 포함할 수 있다.
Patent WO-2022075534-A1 (WO)
Title: 표시패널 및 그 제조방법
Inventor: LEE SEON UK
IPC: G02B5/20
Filed: 2021-01-18
Abstract: 표시패널은 제1 화소영역 및 제2 화소영역을 포함한다. 분할격벽은 적어도 제1 화소영역에 대응하는 개구부를 구비한다. 개구부 내측에 소스광의 컬러를 변환하는 광 변환패턴이 배치된다. 제2 화소영역에 대응하게 광학패턴이 배치된다. 광학패턴은 소스광을 투과시킨다. 광학패턴은 분할격벽과 일체의 형상을 갖거나, 다른 형상을 가질 수 있다.
Patent WO-2021153961-A1 (WO)
Title: Image input system using virtual reality and image data generation method using same
Inventor: YANG BYOUNG SEOK
IPC: G06F3/041
Filed: 2021-01-25
Abstract: Disclosed is an image data generation method using virtual reality. The image data generation method using virtual reality, according to the present invention, comprises the steps in which: a topological data management unit of a system server receives, from a tablet, through a data transmission/reception unit, first topological data generated by means of a pen device touching at least one corner of an input unit of the tablet, and second topological data generated by means of the pen device touching an arbitrary point on the surface of the input unit; by using the first topological data and second topological data, a screen data generation unit of the system server generates virtual screen data which is matched to the input unit; and a screen information management unit of the system server transmits the virtual screen data to a HMD through the data transmission/reception unit.
Patent WO-2021172869-A1 (WO)
Inventor: KIM DAE WHANG
IPC: A61K33/18
Filed: 2021-02-24
Abstract: The present invention relates to: an oral spray apparatus equipped with a nozzle capable of spraying the nasopharynx, larynx, throat, and inner walls of the oral cavity with a drug by turning upward, downward, leftward, and rightward; and an oral spray method thereof. More specifically, provided are: an oral drug spray apparatus capable of spraying by turning upward, downward, leftward, and rightward, wherein the distal end of a nozzle tube forms an L-shape, and a spray head is mounted to the end thereof, and thus the area from the uvula to the nasopharynx can be sprayed, the larynx can be sprayed by turning the spray head, and the tonsils and side walls of the oral cavity can be sprayed by turning the spray head laterally; and an oral drug spray method. The drug spray apparatus and method according to the present invention provide a means for a patient to administer a drug in the left, right, up, and down directions to the posterior upper airway and the lower airway inside the mouth, and thereby prevent/treat respiratory infection diseases by himself/herself.
Patent WO-2021221304-A1 (WO)
Inventor: SHIN INSUB
IPC: C07F5/02
Filed: 2021-03-11
Abstract: Provided are a compound represented by a specific chemical formula, an anti-reflective film including same, and a display device including the anti-reflective film.
Patent WO-2021194291-A1 (WO)
Title: (-)-시벤졸린 숙신산염의 결정다형
Inventor: BRUGMAN SANDER
IPC: C07D233/10
Filed: 2021-03-26
Abstract: 본 발명은 (-)-시벤졸린 숙신산염의 결정형에 관한 것이다. 본 발명은 또한 (-)-시벤졸린 숙신산염 및 이의 결정형의 제조 공정을 제공한다. 본 발명에 따른 (-)-시벤졸린 숙신산염의 결정형은 흡습성이 낮고, 가속조건 및 장기보관 조건에 따른 안정성이 우수하며, 장기간 함량의 변화없이 안정적으로 유지될 수 있다.
Patent WO-2023008610-A1 (WO)
Inventor: JEONG MEE HYE
IPC: B01J23/42
Filed: 2021-07-28
Abstract: La présente invention concerne un catalyseur hétérogène pour la fabrication d'un composé hétérocyclique aromatique d'acide dicarboxyl et un procédé de préparation d'un composé hétérocyclique aromatique d'acide dicarboxyl. Selon la présente invention, un oxyde ayant un rendement et une pureté améliorés peut être produit par une réaction d'oxydation d'un composé hétérocyclique aromatique à base biologique sous un catalyseur hétérogène.
Patent WO-2022075568-A1 (WO)
Title: Dispositif électronique pliable comprenant une structure de fixation
Inventor: KIM JUNGJIN
IPC: G06F1/16
Filed: 2021-08-10
Abstract: Divers modes de réalisation de la présente invention concernent un dispositif électronique pliable comprenant : un dispositif d'affichage souple ; un premier boîtier supportant un côté du dispositif d'affichage souple ; un second boîtier supportant l'autre côté du dispositif d'affichage souple ; au moins une structure de charnière reliant le premier boîtier au second boîtier ; une structure de verrouillage qui est agencée sur un côté du premier boîtier et qui est reliée à la structure de charnière pour avoir un état d'agencement de celui-ci changeant selon l'état déplié ou plié du premier boîtier et du second boîtier ; et une structure de verrouillage qui est formée sur un côté du second boîtier et est couplée à la structure de verrouillage lorsque le premier boîtier et le second boîtier sont dans un état plié.
Patent WO-2022086130-A1 (WO)
Inventor: SEO DAE HAN
IPC: G01J3/10
Filed: 2021-10-19
Abstract: L'invention concerne un système d'observation d'objets utilisant un élément optique holographique. Le système d'observation d'objets peut comprendre : une source de lumière infrarouge (IR) qui émet une lumière infrarouge; un élément optique holographique comprenant un film d'élément optique configuré pour réfléchir et diffracter, vers un objet, une lumière infrarouge d'une longueur d'onde déterminée parmi la lumière infrarouge émise par la source de lumière IR; et un détecteur de lumière IR qui détecte la lumière infrarouge d'une longueur d'onde déterminée réfléchie par l'objet.
Patent WO-2022131559-A1 (WO)
Inventor: HAN YOUNGSEOK
IPC: G06Q30/02
Filed: 2021-11-12
Abstract: 서비스 내용, 서비스 시간 및 서비스 지역을 포함하는 압축된 긱서비스 정보를 획득하는 단계; 상기 압축된 긱서비스 정보에 대한 주문량을 예측하는 단계; 상기 압축된 긱서비스 정보 및 주문량에 기초하여, 상기 압축된 긱서비스 정보에 대한 가격을 결정하는 단계; 상기 압축된 긱서비스 정보 및 긱서비스 가격을 포함하는 긱서비스 오퍼를 생성하는 단계; 및 상기 긱서비스 오퍼를 적어도 하나의 긱서비스 요청자 단말에게 송신하는 단계를 포함하는 압축된 긱서비스 제공 방법 및 그 장치가 개시되어 있다.
Patent WO-2023008664-A1 (WO)
Inventor: JUNG KWANG HWAN
IPC: C07K14/405
Filed: 2021-12-07
Abstract: La présente invention concerne un système de vecteurs pour la transformation de Chlorella vulgaris ( Chlorella vulgaris ), un procédé de transformation de Chlorella vulgaris l'utilisant, et un transformant de Chlorella vulgaris.
Patent WO-2022124807-A1 (WO)
Title: 세탁기
Inventor: LEE HYOUNYOUNG
IPC: D06F37/26
Filed: 2021-12-09
Abstract: 구조를 개선한 베어링 하우징을 포함하는 세탁기를 개시한다. 세탁기는 터브와, 상기 터브 내측에 위치하고 회전 가능하게 설치되는 드럼 및 상기 드럼을 구동시키는 샤프트를 회전 가능하게 지지하고, 상기 터브에 인서트되는 베어링 하우징으로서, 상기 샤프트를 회전시키는 구동 모터의 스테이터가 결합되도록 마련되는 스테이터 결합부와, 상기 스테이터 결합부의 원주 방향을 따라 이격되게 마련되는 복수의 레그부를 포함하는 베어링 하우징을 포함하고, 상기 복수의 레그부 각각은, 상기 스테이터 결합부와 연결되는 제1단과, 상기 제1단으로부터 상기 스테이터 결합부의 반경 방향 외측으로 연장되는 제2단을 포함하는 레그 플레이트와, 서로 인접한 상기 복수의 레그부의 상기 제1단 사이를 연결하도록 마련되는 연결부와, 상기 복수의 레그부의 상기 제2단 사이에 형성되는 이격 공간 및 상기 레그 플레이트와 상기 연결부의 테두리를 따라 형성되는 외곽 리브를 포함할 수 있다.
Patent WO-2022131854-A1 (WO)
Title: Appareil à faisceau de câbles
Inventor: LIM DA YOUNG
IPC: H01B13/012
Filed: 2021-12-17
Abstract: Est divulgué un appareil à faisceau de câbles apte à traiter automatiquement divers types de bornes. L'appareil à faisceau de câbles selon la présente invention comprend : une unité de découpe de bornes qui découpe et sépare des bornes d'une unité de bande, les bornes étant agencées à certains intervalles et reliées à l'unité de bande d'une bande enroulée sur une bobine ; une unité de transport de bornes qui transporte les bornes découpées par l'unité de découpe de bornes vers des positions de pressage dans lesquelles les bornes sont accouplées à une partie de revêtement d'un fil ; une unité d'alignement de bornes qui aligne les bornes transportées vers les positions de pressage de sorte qu'une opération de pressage peut être effectuée au niveau de positions exactes ; et une unité de pressage qui accouple les bornes, qui sont alignées sur l'unité d'alignement de bornes, par l'intermédiaire d'un traitement de compression des bornes à l'aide d'une presse de moulage.
Patent WO-2022139564-A1 (WO)
Inventor: LEE JONGSEUNG
IPC: A61K31/165
Filed: 2021-12-27
Abstract: La présente invention concerne un nouveau composé dérivé ayant un groupe biphényle introduit dans de l'acide amino-alcanoïque et une composition anti-inflammatoire le comprenant. La présente invention vise à fournir une composition pharmaceutique comprenant un nouveau composé dérivé ayant un groupe biphényle introduit dans de l'acide amino-alcanoïque, un sel de celui-ci, et/ou un solvate de celui-ci en tant que principe actif pour la prévention ou le traitement de fibroses, de maladies inflammatoires, de maladies auto-immunes et/ou de maladies allergiques.
Patent WO-2022164172-A1 (WO)
Title: 치열 교정 브라켓
Inventor: LEE KEE JOON
IPC: A61C7/30
Filed: 2022-01-25
Abstract: 본 발명은 치아에 고정되는 고정부와, 상기 고정부에 연장되는 지지부와, 상기 지지부와 함께 와이어가 결착되는 와이어 결착부를 형성하는 레일부를 포함하는 베이스; 상기 레일부에 일 영역이 돌출되게 마련되며, 가요성이 있는 금속 재질의 탄성체; 및 상기 탄성체에 선택적으로 결합되는 복수의 결합홈을 형성하고, 상기 레일부를 커버하며 상기 레일부에 슬라이딩 이동가능하게 마련되어 상기 와이어 결착부를 개폐하는 캡을 포함하며, 상기 탄성체가 복수의 상기 결합홈 중 어느 하나의 결합홈에 선택적으로 결합될 때, 상기 탄성체는 탄성변형한 상태로 상기 결합홈에 결합되면서 상기 캡에 햅틱을 유도하는 것을 특징으로 하는 치열 교정 브라켓에 관한 것이다.
Patent WO-2022216019-A1 (WO)
Inventor: KIM MINJUN
IPC: C09K11/06
Filed: 2022-04-05
Abstract: 본 발명은 양극과 음극 사이의 발광층을 포함하고, 상기 발광층은 화학식 1로 표시되는 화합물 및 화학식 2로 표시되는 화합물을 포함하는 구동 전압, 효율 및 수명이 우수한 유기 발광 소자에 관한 것입니다.
Patent WO-2022260496-A1 (WO)
Title: Over-discharge prevention device and method
Inventor: CHOI JANG-HYEOK
IPC: G01R31/382
Filed: 2022-06-10
Abstract: An over-discharge prevention device according to an embodiment of the present invention relates to a device for preventing over-discharge of a battery pack provided in a vehicle, the device comprising: a measurement unit configured to measure a voltage of a main battery provided in the battery pack according to an operation mode; and a control unit configured to determine an operating state of a charging/discharging relay connected to the main battery, and control the operation mode of the measurement unit on the basis of at least one of the determined operating state of the charging/discharging relay, whether the vehicle is stopped, and the voltage of the main battery measured by the measurement unit.
Patent WO-2023277631-A1 (WO)
Title: Communication device for vehicle, and vehicle having same
Inventor: KIM TAEKYOUNG
IPC: H04L12/66
Filed: 2022-06-30
Abstract: The present disclosure relates to a communication device for a vehicle, and a vehicle having same. The communication device for a vehicle according to one embodiment of the present disclosure comprises: a gateway for establishing data communication with multiple area electronic control devices on the basis of a first communication scheme; and a service orchestration for controlling such that data, which is provided by a first area electronic control device which is a service provider from among the multiple area electronic control devices, is transmitted to a second area electronic control device which is a service consumer. Therefore, the present invention enables dynamic control of data which can be provided among multiple electronic control devices.
Patent WO-2023043035-A1 (WO)
Inventor: LEE SANGYOON
IPC: G16H20/30
Filed: 2022-07-20
Abstract: 일 실시 예에 따른, 전자 장치는 전자 장치의 제1 이동 정보 및 외부 전자 장치의 제2 이동 정보를 획득할 수 있다. 상기 전자 장치는, 상기 전자 장치의 제1 이동 정보 및 상기 외부 전자 장치의 제2 이동 정보에 기반하여, 상기 제1 웨어러블 장치가 상기 제1 액츄에이터를 이용하여 동작할 모드인 제1 모드 및 상기 제2 웨어러블 장치가 상기 제2 액츄에이터를 이용하여 동작할 모드인 제2 모드를 식별할 수 있다. 상기 전자 장치는, 상기 제1 액츄에이터를 이용하여 상기 제1 모드로 동작하라는 요청 신호를 상기 제1 웨어러블 장치에게 송신할 수 있다. 상기 전자 장치는, 상기 제2 모드로 동작하라는 요청 신호를 상기 외부 전자 장치에게 송신할 수 있다.
Patent WO-2023063678-A1 (WO)
Inventor: CHOI SANGWOO
IPC: B21C23/08
Filed: 2022-10-11
Abstract: La présente invention concerne une tige de fil d'acier au graphite, un fil d'acier et un acier au graphite, qui présentent d'excellentes performances de coupe, et des procédés de fabrication associés, et, de manière plus spécifique : une tige de fil d'acier au graphite, un fil d'acier et un acier au graphite auquel du soufre est ajouté et qui ont une performance de coupe supérieure à celle d'un acier de décolletage normal ; et des procédés de fabrication associés. Spécifiquement, la présente invention concerne une tige de fil d'acier au graphite et un fil d'acier, et des procédés de fabrication associés, la tige et le fil comprenant, en % en poids, 0,60 à 0,90 % de carbone (C), 2,0 à 2,5 % de silicium (Si), 0,1 à 0,6 % de manganèse (Mn), 0,015 % ou moins de phosphore (P) (à l'exclusion de 0), 0,031 à 0,3 % de soufre (S), 0,01 à 0,05 % d'aluminium (Al), 0,005 à 0,02 % de titane (Ti), 0,0005 à 0,0020 % de bore (B), 0,0030 à 0,0150 % d'azote (N), et le reste étant constitué de Fe et des impuretés inévitables. De plus, la présente invention concerne de l'acier au graphite et un procédé de fabrication associé, l'acier comprenant, en % en poids, 0,60 à 0,90 % de carbone (C), 2,0 à 2,5 % de silicium (Si), 0,1 à 0,6 % de manganèse (Mn), 0,015 % ou moins de phosphore (P) (à l'exclusion de 0), 0,031 à 0,3 % de soufre (S), 0,01 à 0,05 % d'aluminium (Al), 0,005 à 0,02 % de titane (Ti), 0,0005 à 0,0020 % de bore (B), 0,0030-0,0150 % d'azote (N), et le reste étant constitué de Fe et des impuretés inévitables, ayant, en tant que microstructure, des grains de graphite distribués dans une matrice de ferrite, ayant un degré de graphitisation de 95 % ou plus, et contenant 5 % ou moins d'inclusions de MnS et de perlite au total.