baber/WOPTO huggingface dataset:
Patent WO-2019231009-A1 (WO)
Title: Ultra-thin acoustic lens for subwavelength focusing in megasonic range, and design method therefor
Inventor: HYUN JAE-YUB
IPC: G10K11/30
Filed: 2018-05-30
Abstract: The present invention relates to an ultra-thin acoustic lens for subwavelength focusing in a megasonic range, and a design method therefor. More specifically, the present invention relates to a super-oscillatory planar ultra-thin acoustic lens for subwavelength focusing in a megasonic range, which includes a plurality of concentric regions arranged in a concentric shape with reference to the center point, wherein the concentric regions include a plurality of sound insulation regions for insulating incident sound waves, and a plurality of transmission regions for transmitting sound waves, the sound insulation regions and the transmission regions being formed alternately in a radial direction from the center point so as to focus incident sound wave energy onto a subwavelength region. The acoustic lens has flat surfaces on both sides thereof respectively and has a plate shape having a constant thickness, and a layout, which is a radius of each of the plurality of sound insulation regions and transmission regions in the concentric regions, is determined by a topology optimization reverse design method.
Patent WO-2019004615-A1 (WO)
Title: Novel strains metarhizium anisopliae jef-197 and metarhizium anisopliae jef-279, having control effect on monochamus alternatus, pest control composition containing same, and method for controlling monochamus alternatus by using same
Inventor: KIM JAE SU
IPC: C12R1/645
Filed: 2018-05-31
Abstract: The present invention relates to: Metarhizium anisopliae JEF-197(KFCC11720P) and Metarhizium anisopliae JEF-279( KFCC11721P), which are novel strains having a control effect on Monochamus alternatus; a pest control composition containing the same; and a method for controlling Monochamus alternatus by using the same.
Patent WO-2019093628-A1 (WO)
Title: 불연속 일방향 배향 섬유강화 복합재의 제조방법, 불연속 일방향 배향 섬유강화 복합재 및 샌드위치 구조체
Inventor: AHN SEUNG-HYUN
IPC: B32B7/00
Filed: 2018-08-17
Abstract: 불연속 일방향 배향 섬유강화 복합재의 제조방법, 불연속 일방향 배향 섬유강화 복합재 및 샌드위치 구조체가 제공된다. 상기 불연속 일방향 배향 섬유강화 복합재의 제조방법은 에어레이드법을 이용하여 고분자 기재 상에 단섬유들을 불연속적으로 일방향 배향하는 것을 포함한다.
Patent WO-2019098535-A1 (WO)
Title: 유기전기 소자용 화합물, 이를 이용한 유기전기소자 및 그 전자 장치
Inventor: PARK HYOUNG KEUN
IPC: H01L51/50
Filed: 2018-10-12
Abstract: 화학식 1로 표시되는 화합물과, 제 1전극, 제 2전극 및 상기 제 1전극과 상기 제 2전극 사이의 유기물층을 포함하는 유기전기소자, 및 상기 유기전기소자를 포함하는 전자장치가 개시된다. 상기 유기물층에 화학식 1로 표시되는 화합물을 포함함으로써, 유기전기소자의 구동전압을 낮출 수 있고 발광 효율 및 수명을 향상시킬 수 있다.
Patent WO-2020080569-A1 (WO)
Title: Driver drowsiness determination device using radar signal and operation method thereof
Inventor: SONG MOON VIN
IPC: B60N2/00
Filed: 2018-10-18
Abstract: An embodiment of the present invention may comprise: a radar module which is provided in a backrest of a driver seat and transmits or receives a radar signal to or from a driver; and a control module which executes a driver sitting detection mode to determine, using the radar module, whether the driver's sitting on the driver seat is detected, executes a heartbeat detection mode to allow the transmission or reception direction of the radar module to be directed toward the driver's heart when the driver's sitting is detected, and then executes a driver drowsiness determination mode to determine whether the driver is drowsy, using the radar signal of the radar module, which is directed toward the driver's heart.
Patent WO-2019098645-A1 (WO)
Title: 수직 보정이 용이한 골프티
Inventor: KIM HYEONU
IPC: A63B102/32
Filed: 2018-11-13
Abstract: 본 발명은 수직 보정이 용이한 골프티에 관한 것으로서, 지면에 고정되는 제1지지대와 상기 제1지지대에 하단부가 제자리 회전으로 안착되어 상기 제1지지대의 박힘상태에 구애되지 않고 사용자가 원하는 위치로 골프공을 안정적으로 위치시켜 편안한 상태로 티샷이 되도록 유도함으로써, 게임의 유희감을 향상시키도록 하는 데 그 목적이 있다. 이를 위해, 본 발명은, 지면에 용이하게 박혀지도록 하는 고정핀(110) 및 상기 고정핀(110)의 상단에 구성되는 하우징(120)을 포함하여 지면에 고정된 상태를 유지하도록 지지하는 제1지지대(10); 및 상기 제1지지대(10)의 상단에 위치되고 상기 하우징(120)에 의해 제자리 회전이 이루어지도록 지지되어 어떤 상황에서도 골프공이 안정적으로 안착된 상태를 유지하도록 지지하는 제2지지대(20);를 포함하는 것을 특징으로 한다.
Patent WO-2019103431-A1 (WO)
Inventor: KANG WOOSEOK
IPC: H04N21/485
Filed: 2018-11-20
Abstract: L'invention concerne un dispositif pouvant recevoir une demande associée au réglage du niveau d'émission de contenu multimédia d'un dispositif récepteur qui est conçu pour émettre un contenu multimédia. Le dispositif peut identifier un gain de source d'un dispositif source qui est conçu pour fournir le contenu multimédia au dispositif récepteur, et un gain de réception du dispositif récepteur. Le dispositif peut identifier une valeur de réglage de réception pour modifier le gain de réception sur la base de la demande de réglage du niveau d'émission de contenu multimédia du dispositif récepteur, du gain de source et du gain de réception. Le dispositif peut transmettre, au dispositif récepteur, un signal de commande pour permettre la modification du gain de réception sur la base de la valeur de réglage de récepteur. Le niveau d'émission de contenu multimédia du dispositif récepteur est basé sur le gain de source et le gain de réception.
Patent WO-2019151647-A1 (WO)
Title: Noise reduction device for transformer
Inventor: KIM DO JIN
IPC: H01F27/28
Filed: 2018-12-21
Abstract: The present invention is a noise reduction device for a transformer. In the present invention, a shielding element (20) or a connection support element (30) is provided in a winding (17) provided in an internal space (12) of an outer housing (10) in order to remove vibration and noise occurring in the outer housing (10) of the transformer. When a current is applied, a flow of magnetic flux occurs in a low voltage winding (18) and a high voltage winding (19) constituting the winding (17, and thus electromagnetic force is generated. The electromagnetic force is transmitted to a surface of the outer housing (10) through an insulating oil and the like in the outer housing (10), thereby causing vibration and noise. In order to offset and remove the electromagnetic force, the shielding element (20) or the connection support element (30) is used. According to the present invention, the electromagnetic force is offset such that the occurrence of noise and vibration can be reduced.
Patent WO-2020138558-A1 (WO)
Title: 소규모 분산전원 관리 시스템
Inventor: KANG SEONG JONG
IPC: H02J3/38
Filed: 2018-12-28
Abstract: 전력 거래 시장에 연계될 수 있는 소규모 분산전원 관리 시스템에 대하여 개시한다. 본 발명에 따른 소규모 분산전원 관리 시스템은 생산된 전기 에너지를 교류 전원으로부터 변환하여 출력하는 제1전력 변환부, 상기 제1전력 변환부에서 변환된 교류 전원을 전달받아 직류 전원으로 변환하여 출력하는 제2전력 변환부와, 상기 제2전력 변환부에서 출력된 직류 전원을 저장하고 각종 설비 및 산업단지에 전력을 공급하는 에너지 저장장치(ESS)를 포함하는 분산 전원부; 상기 분산 전원부로부터 전력 정보를 전달받아, 전력 정보를 저장하고 실시간 전력 상태를 정산하는 데이터 관리부; 및 상기 데이터 관리부의 전력 정보를 분석하고, 부하예측, 수요예측, 환경 데이터 연동, 에너지 저장장치(ESS)의 전력서비스 사업 참여용량 산정, 경제성 분석을 수행하는 에너지 관리 시스템(EMS);를 포함하는 것을 특징으로 한다.
Patent WO-2019139298-A1 (WO)
Title: Methods for transmitting and receiving physical random access channel, and device for same
Inventor: KO HYUNSOO
IPC: H04L5/00
Filed: 2019-01-03
Abstract: Disclosed is a method whereby a terminal transmits a physical random access channel (PRACH) in a wireless communication system. In particular, the method comprises: receiving information about PRACH resource allocation; and transmitting the PRACH in any one PRACH occasion among one or more PRACH occasions allocated within a PRACH slot on the basis of the information, wherein the number of the one or more PRACH occasions may be based on a preamble format and a starting orthogonal frequency division multiplexing (OFDM) symbol for the PRACH.
Patent WO-2019143078-A1 (WO)
Title: Dishwasher and driving method therefor
Inventor: HAHM JUNGYOON
IPC: A47L15/42
Filed: 2019-01-11
Abstract: A dishwasher having excellent heat recovery efficiency is disclosed. The dishwasher comprises: a first tank for storing cold washing water to be used for the next operation; a dish-washing tub in which washing is performed; a second tank storing hot washing water, which is used in the dish-washing tub, is adjacently disposed so as to deliver the heat of the stored hot washing water to the cold washing water of the first tank, and has an opening for allowing the hot washing water to be delivered to the dish-washing tub therethrough; and a circulation pipe connecting the dish-washing tub and the second tank so as to circulate the hot washing water used for washing between the second tank and the dish-washing tub, and having a circulation valve for allowing the hot washing water used for washing to pass therethrough or be blocked. The dishwasher of the present invention provides an effect of having very excellent heat recovery efficiency while minimally changing a conventional structure.
Patent WO-2019168269-A1 (WO)
Inventor: HA DEOK-CHAN
IPC: B01J31/02
Filed: 2019-01-24
Abstract: The present invention relates to a bifunctional chiral organocatalytic compound having excellent enantioselectivity, a preparation method therefor, and a method for producing a non-natural gamma amino acid from a nitro compound by using the chiral organocatalytic compound. According to the present invention, the bifunctional chiral organocatalytic compound having excellent enantioselectivity can be easily synthesized, gamma-amino acids with high optical selectivity can be obtained at a high yield by an economical and convenient method using the chiral organocatalytic compound, and various (R)-configuration gamma-amino acids, which are not present in nature, can be produced with high optical purity in large quantities by using a small amount of a catalyst, and therefore, the present invention can be widely utilized in various industrial fields including the pharmaceutical industry.
Patent WO-2019172526-A1 (WO)
Title: Edge type liquid crystal panel, and device and method for controlling same
Inventor: PARK YOUNG IL
IPC: G02F1/1333
Filed: 2019-01-28
Abstract: The invention disclosed herein relates to an edge type liquid crystal panel. The edge type liquid crystal panel of the present invention comprises: a body part having a flat surface; and side parts disposed on both sides of the body part respectively, each of the side parts being bent with respect to the body part to form a curved surface.
Patent WO-2019160317-A1 (WO)
Title: Brush-type hair dryer
Inventor: OH OKNAM
IPC: A45D20/50
Filed: 2019-02-13
Abstract: The purpose of the present invention is to provide a brush-type hair dryer improved to be capable of easily and quickly drying wet hair and maintaining healthy hair by allowing hair to be easily dried while brushing, and reducing the consumption of electric energy, the hair dryer comprising: a tubular case member having a discharge port formed on one side thereof and a suction port formed on the other side to form a wind path; a handle member integrally formed on the side of the suction port on one side of the case member to be gripped by the hand; and a brush part integrally formed on the side of the discharge port on the other side of the case member and having a plurality of protruding parts formed in the form of a brush attached thereto, wherein each protruding part has a plurality of holes through which the air discharged from the discharge port is discharged to the outside.
Patent WO-2019209007-A1 (WO)
Title: Ai-based image compression and decompression system
Inventor: JANG KYOUNG IK
IPC: H04N21/472
Filed: 2019-04-23
Abstract: An image compression and decompression system according to an embodiment of the present invention can comprise: an image processing server for compressing acquired image data through artificial neural network-based image learning and storing same, and decompressing a compressed image so as to restore the resolution thereof according to a user request, thereby providing the decompressed image to user equipment; and the user equipment for performing control such that the image data is transmitted to the image processing server, and receiving a result of the image learning and the restoration performed by the image processing server.
Patent WO-2019231288-A1 (WO)
Title: Rna interference-inducing nucleic acid inhibiting noncanonical targets of micro rna, and use for same
Inventor: CHI SUNG WOOK
IPC: C12Q1/6876
Filed: 2019-05-31
Abstract: The present invention relates to RNA interference-inducing nucleic acid that inhibits noncanonical target genes of micro RNA, in which part of the sequence of a specific micro RNA has been modified, and by using the RNA interference-inducing nucleic acid of the present invention, the biological function micro RNA exhibits by inhibiting noncanonical target genes is effectively increased or there is the benefit of selectively exhibiting only one of the biological functions of conventional micro RNA, i.e. the function of inhibiting noncanonical target genes, and the interference-inducing nucleic acid of the present invention enables cell cycling, differentiation, dedifferentiation, formation, movement, splitting, proliferation or death adjustment, and it is expected that the invention can be used in various fields such as drugs and cosmetics.
Patent WO-2021015360-A1 (WO)
Title: Method for preparing polyimide powder, and polyimide powder prepared thereby
Inventor: LEE KIL NAM
IPC: C08G73/10
Filed: 2019-10-17
Abstract: The present invention relates to a method for preparing a polyimide powder, and a polyimide powder prepared thereby, and, more specifically, the method comprises: a dispersion solution preparation step of preparing a dispersion solution by dispersing a dianhydride compound and a diamine compound in a mixed solvent; a dispersion solution reaction step of injecting the dispersion solution, having been prepared through the dispersion solution preparation step, into a reactor and reacting same at a temperature of 150-400°C under a pressurized condition; and a polyimide powder preparation step of preparing a polyimide powder by filtering and drying a reaction product prepared through the dispersion solution reaction step, wherein the mixed solvent comprises water and a high-boiling-point organic solvent. The method for preparing a polyimide powder through the steps can control a polymerization reaction by using the mixed solvent comprising water and a high-boiling-point organic solvent, and thus a high-molecular-weight polyimide powder can be provided.
Patent WO-2020122606-A1 (WO)
Title: 인공신경망을 이용한 장기의 부피 측정 방법 및 그 장치
Inventor: SHIN TAE YOUNG
IPC: A61B5/00
Filed: 2019-12-11
Abstract: 본 발명의 일 실시예에 따른 장기의 부피 측정 방법은 상기 장기를 촬영한 복수의 이미지 및 촬영 메타 데이터를 획득하고, 상기 복수의 이미지를 전처리 하여 지정된 크기의 복수의 이미지 패치(patch)를 획득하는 단계, 상기 복수의 이미지 패치를 3D CNN(Convolutional Neural Network) 기반의 신경망 모델에 입력하여, 상기 복수의 이미지 패치 각각에 대응되는 장기 영역을 추정하는 단계, 상기 추정된 장기 영역의 넓이 및 상기 촬영 메타 데이터를 이용하여 상기 장기의 부피를 측정하는 단계, 상기 신경망 모델의 추정 결과를 기초로 신경망 모델의 불확실성 수치 및 복수의 이미지의 불확실성 수치를 측정하는 단계를 포함한다.
Patent WO-2020145679-A1 (WO)
Inventor: KANG HYUNJEONG
IPC: H04W72/02
Filed: 2020-01-09
Abstract: A method is provided. The method is performed by a user equipment (UE), of performing sidelink communication, and includes obtaining a valid system information block (SIB) for sidelink communication, autonomously determining a sidelink resource based on information of a pool of sidelink resources included in the valid SIB for sidelink communication, and performing sidelink communication with another UE using the determined sidelink resource.
Patent WO-2020189919-A1 (WO)
Title: 배터리 상태 추정 장치
Inventor: BAE YOON-JUNG
IPC: G01R31/382
Filed: 2020-02-28
Abstract: 본 발명의 일 실시예에 따른 배터리 상태 추정 장치는 배터리 셀의 전압을 측정하고, 측정된 전압이 기준 충전 전압에 도달할 때마다 상기 배터리 셀의 개방 회로 전압을 측정하는 전압 측정부; 및 전압 측정부에 의해 측정된 개방 회로 전압을 수신하고, 수신한 개방 회로 전압을 기저장된 기준 전압과 비교하여 전압 변동률을 산출하며, 산출된 전압 변동률 및 기저장된 전압 변동률 데이터에 기반하여 전압 증감 패턴을 결정하고, 결정된 전압 증감 패턴에 따라 상기 배터리 셀의 퇴화 가속 정도를 판단하도록 구성된 제어부를 포함한다.
Patent WO-2020242263-A1 (WO)
Title: Device and method for detecting light
Inventor: KIM YOUNG WOOK
IPC: G01N21/01
Filed: 2020-05-29
Abstract: Embodiments of the disclosure relate to a device and method for detecting light in a plurality of independent reaction regions. According to the disclosure, a light detection device includes a plurality of thermally independent reaction regions, a movable optical module for irradiating the reaction regions with lights of a plurality of wavelengths, detectors for detecting lights emitted from the reaction regions, and a controller controlling the reaction regions, the optical module, and the detectors.
Patent WO-2022019352-A1 (WO)
Title: Signal transmission and reception method and apparatus for terminal and base station in wireless communication system
Inventor: KIM SUNAM
IPC: H04W16/28
Filed: 2020-07-22
Abstract: Disclosed in the present disclosure are an operating method for a terminal and a base station in a wireless communication system, and an apparatus for supporting same. According to one embodiment applicable to the present disclosure, an operating method for a terminal may include the steps of: acquiring signals from a plurality of transmission points; selecting one or more TPs on the basis of the signals acquired from the plurality of TPs; selecting a reference TP from among the selected TPs; acquiring reception time difference information on the basis of the selected reference TP; and transmitting the acquired reception time difference information to the one or more TPs.
Patent WO-2021040243-A1 (WO)
Inventor: YOO CHANG HUN
IPC: G06Q20/40
Filed: 2020-07-24
Abstract: 본 발명은 가상카드번호 기반의 금융거래장치, 가상카드번호 기반의 금융거래제공방법 및 가상카드번호 기반의 금융거래제공프로그램에 관한 것으로, 보다 자세하게는 전자지갑 서비스가 인프라가 구축되지 않은 환경에서 사용자에게 금융거래 서비스를 제공할 수 있도록 하는 장치, 방법 및 프로그램에 관한 것이다.
Patent WO-2021029692-A1 (WO)
Inventor: CHA JAEMOON
IPC: H04W52/28
Filed: 2020-08-13
Abstract: An electronic device according to various embodiments may include: at least one antenna; and at least one communication processor configured to support first network communication with a first network and second network communication with a second network different from the first network. The at least one communication processor may be configured to: identify a first cumulative SAR value based on radiation of a communication signal corresponding to the first network communication via a first part of the at least one antenna and a second cumulative SAR value based on radiation of a communication signal corresponding to the second network communication via a second part of the at least one antenna; and adjust one of a transmission intensity of a first communication signal corresponding to the first network communication or a transmission intensity of a second communication signal corresponding to the second network communication, based on a designated condition satisfied by the first cumulative SAR value and the second cumulative SAR value.
Patent WO-2021149888-A1 (WO)
Title: Multi-radiation cancer treatment robot
Inventor: NOH SUNYOUNG
IPC: A61N5/10
Filed: 2020-08-28
Abstract: The present invention relates to a multi-radiation cancer treatment robot comprising: a body rotatably mounted to a ceiling and having a structure suspended therefrom; a plurality of arms having multiple joints to allow unfolding or folding of the arms and mounted to the opposite sides of the body; and a plurality of radiation accelerators mounted to and supported by each of the plurality of arms to be rotatable in the forward-backward direction or the leftward-rightward direction. According to the present invention, each robot may be provided with a plurality of radiation accelerators and thus can reduce the treatment time.
Patent WO-2021071159-A1 (WO)
Title: Antidiabetic, hypotensive, or antioxidant composition comprising yeast fermentate of rhynchosia nulubilis and method for preparing same composition
Inventor: YUM KYU JIN
IPC: A61P39/06
Filed: 2020-09-28
Abstract: The present invention relates to an antidiabetic, hypotensive, or antioxidant composition comprising a yeast fermentate of Rhynchosia Nulubilis and a method for preparing the composition.
Patent WO-2021066506-A1 (WO)
Inventor: LEE KYUSANG
IPC: B04B5/04
Filed: 2020-09-29
Abstract: The present embodiments relate to a chamber for a centrifuge and a centrifuge comprising same. A chamber for a centrifuge, according to one embodiment, may comprise: a main body including a separation unit in which each component of a centrifuged sample is separated and located, and an extraction unit for moving and receiving the components located in the separation unit; an upper plate including an inlet for injecting a sample for centrifugation, and an outlet for withdrawing, to the outside, the separated components received in the extraction unit; and a lower plate which seals an opening in the bottom of the main body.
Patent WO-2022097771-A1 (WO)
Inventor: KIM DO HYUN
IPC: B33Y40/20
Filed: 2020-11-05
Abstract: 본 발명은 상이한 소재로 적층된 구조체를 형성하기 위한 3D 프린팅 방법으로서, 스테이지 상에 제1 슬러리를 제공하는 제1 적층 단계, 상기 제1 슬러리에 광을 조사하여 제1 목적물의 일 단면 및 상기 제1 목적물과 소정의 거리만큼 이격된 제1 주변물의 일 단면을 형성하는 제1 경화 단계, 상기 제1 목적물이 형성될때까지 상기 제1 적층 단계 및 상기 제1 경화 단계를 반복하는 단계, 상기 제1 목적물을 덮도록 제2 슬러리를 제공하는 제2 적층 단계, 상기 제2 슬러리에 광을 조사하여 제2 목적물의 일 단면 및 상기 제2 목적물과 상기 소정의 거리만큼 이격된 제2 주변물의 일 단면을 형성하는 제2 경화 단계 및 상기 제2 목적물이 형성될때까지 상기 제2 적층 단계 및 상기 제2 경화 단계를 반복하는 단계를 포함한다.
Patent WO-2021107456-A1 (WO)
Title: 3d 프린팅을 위한 2d 적층 단면 외곽선 기반 중공구조 생성 방법
Inventor: LEE HYE IN
IPC: G06T17/20
Filed: 2020-11-10
Abstract: 적층제조 시 재료 사용량이나 출력물 무게를 줄이기 위해, 3D 모델의 중공구조를 2D 적층 단면 외곽선 기반으로 생성하는 방법이 제공된다. 본 발명의 실시예에 따른 2D 적층 단면 외곽선 기반 중공구조 생성 방법은, 3D 모델을 슬라이싱하는 단계; 슬라이싱 결과를 기반으로 중공구조 외곽선을 생성하는 단계; 인접한 중공구조 외곽선 간 오버행 영역을 검출하는 단계; 오버행 영역의 검출 결과에 따라 중공구조 외곽선을 재계산하는 단계; 및 재계산된 중공구조 외곽선을 기반으로 중공구조 메시를 생성하는 단계;를 포함한다. 이에 의해, 2D 적층 단면 데이터를 이용하기 때문에, 별도의 데이터 처리없이 중공구조를 생성할 수 있어, 연산 부담을 절감시킬 수 있다. 또한, 중공구조 생성 시 오버행 영역이 생기지 않도록 처리하기 때문에 내부에 서포트가 필요하지 않으므로 후처리가 용이하다.
Patent WO-2021101342-A1 (WO)
Inventor: Lee Dahyun
IPC: G06F3/02
Filed: 2020-11-20
Abstract: A foldable keyboard cover according to various embodiments of the present document is attached to an electronic device, in which a first housing and a second housing are connected to each other to be foldable via a hinge unit. The foldable keyboard cover comprises: a first cover facing the first housing of the electronic device and including a first attachment unit attached to the first housing, a second cover facing the second housing of the electronic device and including a second attachment unit attached to the second housing, a first folding unit facing the hinge unit of the electronic device and connecting the first cover and the second cover to be foldable about a first folding axis, and a physical keyboard including a first keyboard arranged on at least a partial region of the first cover and a second keyboard arranged on at least a partial region of the second cover. The first folding unit may be formed of an elastic material such that the first cover and the second cover can completely cover the first housing and the second housing in a state in which the first housing and the second housing of the electronic device are completely folded. Various other embodiments are possible.
Patent WO-2021107614-A1 (WO)
Inventor: CHO KYUNG SUN
IPC: E02B11/00
Filed: 2020-11-25
Abstract: The present invention relates to an extendable perforated pipe having an improved structure so as to prevent clogging of through-holes with external soil, wherein the extendable perforated pipe can be formed in a spiral pipe shape by spirally winding a material and can be extended in the longitudinal direction by sliding a cover part on the upper side of a perforated part in which a plurality of the through-holes are perforated. In the extendable perforated pipe, drainage properties in an extension operation can be improved by increasing the width interval of the perforated part, first and second bent portions can be bent in directions opposite to each other at the lateral edge portions of the cover part and the perforated part so as to adjust the longitudinal extension interval, and by a cover member of a braided structure being arranged outside the perforated pipe, a separate nonwoven fabric can be omitted during construction work of the perforated pipe.