baber/WOPTO huggingface dataset:
Patent WO-2021132798-A1 (WO)
Title: Procédé et appareil d'anonymisation de données
Inventor: JEPSON ALLAN
IPC: G06T1/20
Filed: 2020-02-14
Abstract: Un appareil pour nettoyer une image peut comprendre une mémoire stockant des instructions ; et un processeur configuré pour exécuter les instructions pour : recevoir une image d'entrée ; introduire un attribut public prédéfini dans un réseau neuronal de codeur ; obtenir une caractéristique nettoyée à partir de l'image d'entrée sur la base de l'attribut public prédéfini, par l'intermédiaire du réseau neuronal de codeur ; le réseau neuronal de codeur étant entraîné sur la base d'une quantité d'informations dans la caractéristique nettoyée autour de l'image d'entrée, et d'un attribut public estimé estimé à partir de la caractéristique nettoyée.
Patent WO-2020175941-A1 (WO)
Title: Methods and systems for mitigating denial of service (dos) attack in a wireless network
Inventor: TANGUDU NARENDRANATH DURGA
IPC: H04W12/00
Filed: 2020-02-27
Abstract: The present disclosure relates to a pre-5 th -Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4 th -Generation (4G) communication system such as Long Term Evolution (LTE). Methods, network entities, and systems for mitigating Denial of Service (DoS) attack in a wireless network (e.g., access network (AN), core network (CN)). Embodiments herein disclose methods and systems for mitigating Denial of Service (DOS) attacks in wireless networks, by performing admission control by verifying a User Equipment's (UE's) registration request via a Closed Access Group (CAG) cell without performing a primary authentication. Embodiments herein disclose methods and system for verifying permissions of the UE to access a CAG cell based on the UE's Subscription identifier, before performing the primary authentication. Methods and systems for mitigating Denial of Service (DoS) attack in a wireless network. A method for mitigating Denial of Service (DOS) attacks in wireless networks includes requesting a public land mobile network (PLMN) for accessing a non-public network (NPN) through a Closed Access Group (CAG) cell, verifying the permissions of a user equipment (UE) to access the requested NPN through the CAG cell, and performing a primary authentication.
Patent WO-2020242206-A1 (WO)
Title: Dispositif à plasma comprenant un dispositif oes, et électrode
Inventor: SONG JAE MIN
IPC: H01J37/32
Filed: 2020-05-28
Abstract: Dispositif à plasma comprenant un dispositif OES pour diagnostiquer un espace de plasma. Le dispositif à plasma comprenant un dispositif OES pour diagnostiquer un espace de plasma, comprend : une partie de génération de plasma ; une entrée de gaz dans laquelle un gaz est injecté dans la partie de génération de plasma ; une fenêtre de pénétration positionnée sur le côté entrée de gaz dans la partie de génération de plasma ; et une partie de réception de lumière conçue pour délivrer, à un capteur OES, une lumière entrante provenant de la fenêtre de pénétration.
Patent WO-2020251307-A1 (WO)
Inventor: KIM EUN YEONG
IPC: C09J133/08
Filed: 2020-06-12
Abstract: La présente invention concerne un film non conducteur et un procédé de préparation d'un stratifié semi-conducteur faisant appel audit film non conducteur, ledit film non conducteur comprenant : une couche de liaison comprenant une résine époxy de faible poids moléculaire ; et une couche adhésive comprenant une composition prédéfinie.
Patent WO-2021167176-A1 (WO)
Inventor: KIM SUNG HYUN
IPC: H01L23/00
Filed: 2020-06-24
Abstract: 본 발명에 따른 태양전지 셀의 태빙방법은, 와이어를 재단하는 와이어 재단과정; 상기 와이어의 제1 부분을 압연하는 와이어 압연과정; 상기 와이어의 제1 부분이 서로 인접하는 제1 및 제2 태양전지 셀의 경계부분에 위치하도록, 상기 와이어를 상기 제1 태양전지 셀의 상면 및 제2 태양전지 셀의 배면에 정렬하는 와이어 정렬과정; 및 상기 정렬된 와이어를 상기 태양전지 셀에 솔더링하는 와이어 솔더링과정을 포함한다.
Patent WO-2021020852-A1 (WO)
Inventor: YOON HO BYUNG
IPC: G01R31/392
Filed: 2020-07-28
Abstract: A device for managing a battery according to the present disclosure comprises: an SOC calculation unit which calculates the SOC of a battery module in which a plurality of battery cells are connected in parallel by using at least one of a voltage, a current, or a temperature measured for the battery module; an SOH calculation unit which calculates the SOH of the battery module on the basis of the SOC calculated by the SOC calculation unit and at least one of the voltage, the current, or the temperature of the battery module; and a diagnosis unit which calculates the change rate of the SOH by using the SOH, and diagnoses the state of the battery module by using the calculated change rate of the SOH. The state of the battery module may be any one of a normal state, a state including a degenerate battery cell, or a state including a current interrupt device (CID) open battery cell.
Patent WO-2021054601-A1 (WO)
Title: Image-based wireless positioning method and device
Inventor: LEE TAIK JIN
IPC: G06T7/73
Filed: 2020-07-31
Abstract: The present invention relates to an image-based wireless positioning method and device, in which: one pixel value is generated from an ID of at least one fixed node and an intensity of at least one signal received from the fixed node; a moving path image of a moving node is generated by expressing a reception point of the at least one signal by using a pixel having the pixel value; and a position of the moving node is estimated on the basis of comparison of the moving path image with a map image for a region in which the moving node is positioned, so that it is possible to improve positioning accuracy in a large space, such as a square, or at a branch point where a road is split into several branches, while improving calculation efficiency of a wireless positioning algorithm.
Patent WO-2021045551-A1 (WO)
Title: Position monitoring system and method
Inventor: KIM JEONGHWAN
IPC: G06F21/32
Filed: 2020-09-04
Abstract: The present invention relates to a position monitoring system and method, the system comprising: a terminal to be monitored which is activated when a subject to be monitored has been authenticated through the bio-information of the subject to be monitored, and which is attached to the subject to be monitored so that the position of the subject to be monitored can be monitored within a predefined boundary; a relay device provided within the boundary so as to communicate with the terminal to be monitored; and a control device for monitoring, through the relay device, the position of the terminal to be monitored so as to monitor whether the subject to be monitored exists within the boundary.
Patent WO-2021085843-A1 (WO)
Title: Use of calcium channel blocker for inhibiting exosome secretion or pd-l1 expression
Inventor: BAEK MOON-CHANG
IPC: A61P35/00
Filed: 2020-09-09
Abstract: The present invention relates to a use of a calcium channel blocker for inhibiting exosome secretion or PD-L1 expression. It was confirmed that the calcium channel blocker inhibits calcium channels, which are currently known as a target for anticancer drug development, to not only inhibit the secretion of cancer cell-derived exosomes, but also reduce the expression of PD-L1 in cells, and is thus effective for cancer treatment when used in combination with existing anticancer drugs or when used alone in the form of a drug. Accordingly, the present invention can be used in novel modes of anticancer drug development using drugs exhibiting immune-checkpoint inhibition effects and exosome secretion inhibition effects.
Patent WO-2021091229-A1 (WO)
Title: Method and apparatus for performing dynamic cross-link interference measurement and reporting in next-generation mobile communication system
Inventor: JIN SEUNGRI
IPC: H04W24/10
Filed: 2020-11-04
Abstract: The disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The disclosure provides a method for performing dynamic cross-link interference (CLI) measurement and reporting in a mobile communication system. In accordance with an aspect of the disclosure, the method performed by a terminal comprises: receiving, from a base station, first information for a measurement object associated with a CLI and second information for a report configuration, the first information including at least one of configuration for sounding reference signal (SRS) resources and configuration for resources to measure a received signal strength indicator (RSSI) associated with the CLI,; obtaining a reference signal received power (RSRP) of at least one SRS based on the SRS resources and at least one bandwidth part (BWP) identifier (ID) included in the configuration for the SRS resources,; and transmitting, to the base station, a measurement report including the RSRP based on the second information.
Patent WO-2022059853-A1 (WO)
Title: Healthcare information provision system linked to healthcare device, and healthcare information provision method using same
Inventor: PARK UNG YONG
IPC: A61B5/00
Filed: 2020-12-01
Abstract: One embodiment of the present invention comprises: a healthcare device, which includes one or more sensor units for collecting body information about a user and provides care to the body of the user; a smart device which is wirelessly connected to the healthcare device, and in which a display for displaying information collected by the sensor units is embedded; and a control management server, which is wirelessly connected to the smart device, receives, through the smart device, the information collected by the sensor units, so as to analyze data, and transmits analyzed information to the smart device.
Patent WO-2021125630-A1 (WO)
Title: 가공부 내식성이 우수한 Zn-Al-Mg계 용융합금도금 강재 및 그 제조방법
Inventor: KIM HEUNG-YUN
IPC: C22C18/04
Filed: 2020-12-02
Abstract: 본 발명의 일 실시형태는 소지철; 및 상기 소지철 상에 형성된 용융합금도금층을 포함하고, 상기 용융합금도금층은 중량%로, Al: 8%초과~25%, Mg: 4%초과~12%, 잔부 Zn 및 기타 불가피한 불순물을 포함하며, 상기 용융합금도금층 내 MgZn2상의 분율은 10~45면적%이고, 상기 MgZn2상은 그 내부에 균열을 가지고, 상기 균열은 강판 두께 방향으로의 단면을 기준으로 할 때 관찰되는 시야에서 상기 강판 두께 방향의 수직 방향으로 100㎛당 3~80개 존재하는 가공부 내식성이 우수한 Zn-Al-Mg계 용융합금도금 강재 및 그 제조방법을 제공한다.
Patent WO-2022025373-A1 (WO)
Title: 펜타입 휴대용 자외선 살균기
Inventor: KIM KYOUNG YOUN
IPC: A61L2/10
Filed: 2021-01-25
Abstract: 본 발명은, 펜형상의 하우징; 상기 하우징에 설치되는 기판; 상기 기판의 제 1 면에 배치되는 배터리; 상기 기판의 제 2 면에 설치되어 UV 광을 출력하는 엘이디 발광소자; 상기 기판의 제 1 면 또는 제 2 면 중 어느 한면에 설치되는 전원 제어 회로; 및 상기 하우징의 일측에 설치되어서 상기 엘이디 발광소자의 온/오프 신호를 출력하는 스위치;를 포함하는, 펜타입 휴대용 자외선 살균기에 관한 것이다.
Patent WO-2021201608-A1 (WO)
Title: 노이지 제거 기능을 구비한 고속 키보드장치
Inventor: YUN HAI JIN
IPC: G06F3/023
Filed: 2021-03-31
Abstract: 키를 인식하는 메인 컨트롤 유닛(MCU)과 입력 키를 일대일 직접 연결 방식으로 구현하여 키의 동작 반응에 대해 입력 지연을 최소화함으로써 고속 키보드를 구현하고, 키의 누름 동작에 따른 채터링(바운스) 노이지를 제거하여 부품 수명이 단축되는 것을 방지하도록 한 노이지 제거 기능을 구비한 고속 키보드장치에 관한 것으로서, 키보드의 개별 키와 일대일 병렬방식 직접 연결 방식을 이용하여 모든 키를 실시간 지연 없이 동작 상황을 인식하고, 키 정보를 고속 전송 방식인 USB 하이 스피드(High Speed) 방식으로 컴퓨터 본체에 전송함으로써, 고속 키보드를 구현하며, 개별 키의 조작시 기계적인 스위치(SW)가 접점과 접속할 때, 채터링 노이지를 제거하여 채터링 노이지에 의해 발생하는 스파크의 제거로 개별 키의 수명단축을 방지함으로써 키보드의 수명 연장을 도모한다.
Patent WO-2021241983-A1 (WO)
Title: Method and apparatus for semi-supervised learning
Inventor: BALAZEVIC IVANA
IPC: G06N20/00
Filed: 2021-05-25
Abstract: Provided is a computer-implemented method for training a machine learning (ML) model using labelled and unlabelled data, the method comprising obtaining a set of training data comprising a set of labelled data items and a set of unlabelled data items, training a loss module of the ML model using labels in the set of labelled data items, to generate a trained loss module capable of estimating a likelihood of a label for a data item, and training a task module of the ML model using the loss module, the set of labelled data items, and the set of unlabelled data items, to generate a trained task module capable of making a prediction of a label for input data.
Patent WO-2022149672-A1 (WO)
Inventor: PARK JUNHYUNG
IPC: H04N21/442
Filed: 2021-06-24
Abstract: An electronic device is disclosed. The present electronic device comprises: a memory; a communication interface; and a processor which controls the communication interface to transmit content and a first trace log request to an external device, when a first trace log response corresponding to the first trace log request is received from the external device, controls the communication interface to obtain a first ratio value between a first trace log response time at which the first trace log response is received and a predetermined first trace log request time corresponding to the first trace log request, and transmit a second trace log request to the external device at an arbitrary time, identifies whether a second trace log response corresponding to the second trace log request is received from the external device, and identifies whether the content is being normally played, on the basis of at least one of the first ratio value and information indicating whether the second trace log response is received.
Patent WO-2023074929-A1 (WO)
Inventor: PAIK BONGKYU
IPC: H04L1/16
Filed: 2021-10-27
Abstract: La présente divulgation concerne un système d'écouteur bouton sans fil et son procédé de fonctionnement, le système d'écouteur bouton sans fil réduisant au minimum la fréquence d'occurrence d'un relais de données entre les écouteurs boutons et le temps de retard, et réduisant au minimum la consommation de la batterie. Le système d'écouteur bouton sans fil comprend : un dispositif source ; un premier dispositif récepteur recevant des données audio en provenance du dispositif source ; et un second dispositif récepteur permettant de surveiller les données audio transmises à partir du dispositif source. Si des données ne parviennent pas à être surveillées par le second dispositif récepteur, le premier dispositif récepteur peut transmettre un paquet relais au second dispositif récepteur de sorte qu'un relais de données est réalisé.
Patent WO-2022158741-A1 (WO)
Inventor: CHUN JEONG HWAN
IPC: B01J37/08
Filed: 2021-12-27
Abstract: La présente invention concerne un procédé de production de chlore à un rendement élevé par l'intermédiaire d'une réaction d'oxydation de chlorure d'hydrogène et, plus spécifiquement, la présente invention est caractérisée en ce que le chlore est produit avec un rendement élevé lorsque le chlorure d'hydrogène dans un gaz mixte contenant de l'oxyde de carbone est soumis à une réaction d'oxydation.
Patent WO-2022182114-A1 (WO)
Inventor: AHN HYEJIN
IPC: G02B1/11
Filed: 2022-02-23
Abstract: The present invention provides a polarizing plate and an image display device comprising same, the polarizing plate comprising: a polarizer; and a surface treatment film laminated on one surface of the polarizer, wherein the surface treatment film has a total haze of 15-25% and a reflectance of at most 1%, and satisfies a specific mathematical equation 1. The polarizing plate, according to the present invention, when applied to a panel, exhibits low panel reflectance and may inhibit the visibility of ghost images and sparkling phenomenon.
Patent WO-2023277307-A1 (WO)
Inventor: KWON NARA
IPC: C12P13/14
Filed: 2022-03-31
Abstract: 본 출원은 고농도 L-글루탐산을 생산하기 위한 균주 및 이를 이용한 L-글루탐산 생산방법에 관한 것이다.
Patent WO-2022255673-A1 (WO)
Inventor: SON JONGIN
IPC: H01M50/578
Filed: 2022-05-09
Abstract: 본 발명의 일 실시예에 따른 이차 전지는, 전극 조립체; 상기 전극 조립체가 수납되고, 상부가 개방된 전지 케이스; 및 상기 전지 케이스의 개방된 상부에 결합되는 캡 조립체를 포함한다. 상기 캡 조립체는, 안전 벤트; 및 상기 안전 벤트 아래에 위치한 CID 필터를 포함한다. 상기 안전 벤트는, 상단에서 외부로 노출되며, 상기 안전 벤트에 상하로 관통된 벤트홀이 형성되고, 상기 CID 필터에, 상하로 관통되고 상기 벤트홀과 연결되는 CID 홀이 형성된다. 상기 전극 조립체로부터 연장된 제1 전극탭이 상기 CID 필터에 접합되며, 상기 CID 홀은 상기 제1 전극탭에 의해 폐쇄되거나 개방된다.
Patent WO-2023128079-A1 (WO)
Inventor: PARK JONG-IL
IPC: G06T13/40
Filed: 2022-05-19
Abstract: La présente invention concerne un procédé de reproduction d'une expression faciale à l'aide d'un avatar 3D basé sur un mouvement existant sans processus de production de modèle d'avatar 3D permettant une modification supplémentaire ou une reproduction d'expression faciale d'un modèle d'avatar 3D, permettant la reproduction d'expression faciale d'un avatar 3D. La présente invention comprend : une unité de génération de données d'apprentissage qui obtient des données d'apprentissage de divers éléments de données d'expression faciale à l'aide de l'avatar 3D ; une unité d'estimation de paramètre qui extrait un paramètre de reproduction d'expression faciale à l'aide des données d'apprentissage ; et une unité de reproduction permettant de reproduire une expression faciale de l'avatar 3D par réflexion d'une expression faciale en temps réel d'un utilisateur à l'aide du paramètre extrait. La présente invention offre une compatibilité élevée de l'utilisation immédiate d'un modèle d'avatar 3D utilisé dans une animation, un film ou un jeu existant, dans un système qui nécessite une technologie de reproduction faciale, comme une réunion virtuelle à l'aide d'un avatar 3D, sans technologie d'animation professionnelle.
Patent WO-2022250399-A1 (WO)
Inventor: LEE CHOONJAE
IPC: G06K19/07
Filed: 2022-05-23
Abstract: The present invention provides a vehicle process management system and method capable of preventing a process delay due to a defect or non-attachment of a tag device. The present invention comprises: a plurality of tag devices which are respectively attached to a plurality of vehicles each having an identification code and move around on a production line together in order to identify locations of the plurality of vehicles, and each have a tag ID; a tag reader unit which is arranged in the production line and recognizes the tag IDs of the tag devices; a code reader unit which is arranged in the production line and recognizes the identification codes of the vehicles; and a server which receives the identification codes of the vehicles from the code reader unit and receives the tag IDs of the tag devices from the tag reader unit, so as to map the identification codes to the tag IDs, respectively, and when the identification codes are not mapped to the tag IDs for a certain reason, generates virtual tags each having a virtual ID, maps the identification codes to the virtual IDs, and tracks the virtual tags.
Patent WO-2023234448-A1 (WO)
Inventor: MOON BYUNGYOON
IPC: B65G47/88
Filed: 2022-06-03
Abstract: 컨베이어의 투입구 또는 배출구 중 적어도 일측에 제1 샤프트를 중심으로 힌지 결합하는 스토퍼 모듈; 및 상기 스토퍼 모듈에 결합하며 상기 스토퍼 모듈을 브릿지 모드 또는 스토퍼 모드로 전환하는 액츄에이터를 포함하고, 상기 스토퍼 모듈은, 일측에 상기 제1 샤프트가 위치하는 스토퍼 하우징; 및 상기 제1 샤프트와 이격되어 상기 스토퍼 하우징에 위치하며 상기 액츄에이터가 결합하는 제2 샤프트를 포함하고, 상기 브릿지 모드에서는 상기 스토퍼 모듈의 상면이 상기 컨베이어의 상면과 연속적인 면을 형성하고, 상기 스토퍼 모드에서는 상기 스토퍼 모듈의 상면이 상기 컨베이어의 상면과 소정각도 이상의 각도로 꺾어지는 면을 형성하는 컨베이어 스토퍼는, 컨베이어 간 높이 단차나 소정의 이격거리가 있음에도 이동대상물의 이재 또는 적재가 원활하게 가능하도록 브릿지 역할을 하거나 컨베이어의 오작동에도 이동대상물이 추락하지 않게 스토퍼 역할을 할 수 있다.
Patent WO-2023068480-A1 (WO)
Title: Electronic device, terminal device, and method for controlling same
Inventor: PARK SANGJUN
IPC: G10L13/08
Filed: 2022-06-27
Abstract: An electronic device, a terminal device, and a method for controlling same are disclosed. The electronic device comprises: an input interface; and a processor comprising a prosody module, for extracting audio properties, and a vocoder module for generating a voice waveform. The processor: receives an input of text by means of the input interface; identifies a first audio property from the input text by means of the prosody module, wherein the first audio property corresponds to a first sampling rate; generates a changed audio property corresponding to a changed sampling rate different from the first sampling rate, on the basis of the identified first audio property; and generates a plurality of vocoder learning models by training the vocoder module on the basis of the first audio property and the changed audio property.
Patent WO-2023003263-A1 (WO)
Inventor: CHO INNWHAN
IPC: H01M10/04
Filed: 2022-07-13
Abstract: La présente invention concerne une unité de chauffage de stratifié d'électrode et un appareil de stratification la comprenant, l'unité de chauffage de stratifié d'électrode comportant : un élément chauffant pour chauffer un stratifié d'électrode qui comprend des électrodes et un séparateur et est transféré dans une direction ; et un élément de vision pour mesurer les positions des électrodes dans une zone où le stratifié d'électrode traverse l'élément chauffant.
Patent WO-2023096071-A1 (WO)
Title: Vehicle seat sliding device
Inventor: BAE JI SUNG
IPC: H02J50/10
Filed: 2022-07-26
Abstract: The present invention relates to a vehicle seat sliding device, comprising: rail units mounted on a vehicle body; transfer units which are slidably installed on the rail units and support a seat part; driving units which are connected to the transfer units and generate a driving force so as to slidably move the transfer units; a power supply unit which is mounted on the vehicle body and supplies power; and a wireless transmission unit which wirelessly transmits the power supplied from the power supply unit to the driving units.
Patent WO-2023014163-A1 (WO)
Inventor: KIM KYOUNGJOUNG
IPC: F25D11/00
Filed: 2022-08-05
Abstract: Un appareil ménager comprend : un coffre comportant un espace ; et une porte configurée pour ouvrir et fermer l'espace, la porte comprenant : un corps de porte pourvu d'un matériau isolant à l'intérieur de celui-ci ; un dispositif d'éclairage configuré pour émettre de la lumière ; une plaque avant disposée sur une surface avant du corps de porte et comprenant une première partie et une seconde partie à travers lesquelles la lumière émise par le dispositif d'éclairage peut être transmise et qui est disposée à l'extérieur de la première partie. Lorsque la lumière émise par le dispositif d'éclairage passe à travers la seconde partie, la seconde partie de la plaque avant s'éclaire avec une couleur spécifique sous l'effet de la lumière émise par le dispositif d'éclairage.
Patent WO-2023043073-A1 (WO)
Inventor: BAE SUNWOOK
IPC: H04L67/125
Filed: 2022-08-22
Abstract: 웨어러블 전자 장치가 제공된다. 상기 웨어러블 전자 장치는, 신체 착용 가능하도록 형성된 하우징, 적어도 하나의 센서, 통신 모듈, 디스플레이 및 상기 적어도 하나의 센서, 상기 통신 모듈 및 상기 디스플레이와 작동적으로 연결된 적어도 하나의 프로세서를 포함하고, 상기 적어도 하나의 프로세서는, 복수의 사물 인터넷 장치들과 무선 통신 연결된 전자 장치로부터, 상기 복수의 사물 인터넷 장치들과 관련된 상태 정보를 획득하고, 상기 적어도 하나의 센서를 이용하여 센서 데이터를 획득하고, 상기 센서 데이터 및 상기 복수의 사물 인터넷 장치들과 관련된 상태 정보에 기반하여, 상기 복수의 사물 인터넷 장치들 중 적어도 하나의 사물 인터넷 장치 장치에서 제공 가능한 후보 기능을 식별하고, 상기 적어도 하나의 사물 인터넷 장치에서 제공 가능한 후보 기능의 정보를 상기 디스플레이 상에 표시하도록 설정할 수 있다.
Patent WO-2023075438-A1 (WO)
Title: Waste plastic pyrolysis oil refining equipment and method of refining waste plastic pyrolysis oil
Inventor: JEON HEEJUNG
IPC: C10G65/04
Filed: 2022-10-27
Abstract: Provided is waste plastic pyrolysis oil refining equipment including: a guard bed 100 where a waste plastic pyrolysis oil and a hydrogen gas are introduced and hydrotreated at a first temperature in the presence of a hydrotreating catalyst to produce a fluid from which chlorine has been removed; a main bed 200 where the fluid and the hydrogen gas are introduced from the guard bed 100 and hydrotreated at a second temperature higher than the first temperature in the presence of a hydrotreating catalyst to produce a refined oil from which impurities have been removed; and a recovery tank 300 where the refined oil from which impurities have been removed is recovered from the main bed 200, wherein a temperature before the refined oil is recovered to the recovery tank 300 is maintained at 290°C or higher and lower than 350°C.