baber/WOPTO huggingface dataset:
Patent KR-20000040333-A (KR)
Title: Communication system using vcr
Inventor: HONG SEONG HWA
IPC: G11B15/02
Filed: 1998-12-17
Abstract: PURPOSE: A communication system using a VCR(video cassette recorder) is provided to perform functions as a communication system as well as to perform simple recording and playback. CONSTITUTION: During operating a VCR, a microcomputer(26) transmits a busy signal if a signal received in a mode(21) is an image signal. Without operating the VCR, a message to inform a receiving of the image signal is displayed on an OSD(on screen display) screen. Without existing a recording tape in a deck, a buzzer to inform the lack of tape is transmitted to a wireless telephone as remote controller(30). In existing the tape, the receiving signal is recorded. While talking over the telephone, the microcomputer transmits the busy signal if the signal received in the modem(21) is an acoustic signal. Without the telephone call, the message is displayed on the OSD screen. The busy signal is transmitted if a user does not start the telephone call. A VCR unit(20) and the wireless telephone as remote controller(30) transmits and receives a specific RF frequency through an RF/infrared rays transmitting/receiving conversion units(25)(31) when the user starts the telephone call.
Patent KR-19990063208-A (KR)
Title: 액체 지방상중에 분산된 중합체 입자를 함유하고 장기간 정착성을 갖는 미분 화장 조성물
IPC: A61K8/85
Filed: 1998-12-18
Abstract: 본 발명은 콤팩트된(compacted), 프레스된(pressed), 또는 프리(free) 파우더의 형태로 제공될 수 있는, 피부의 보호 및/또는 메이크업용 미분(微粉) 조성물, 특히 화장, 피부학, 약학 및 위생학적 미분 조성물에 관한 것으로서, 이 조성물은 액체 지방상, 특히 휘발성 액체 지방상내의 표면에서 안정화되는 2 중량% 이상의 중합체를 함유하는 지방 결합제 및 1 종 이상의 미분 화합물을 함유한다.     중합체의 양에 따라, 입술 또는 피부상에 묻어나지 않고 정착성이 긴 주목할 만한 성질을 갖는 파우더 화장품을 수득할 수 있다. 
     본 발명은 또한 상기 조성물중의 이 분산물의 용도에 관한 것이다.
Patent KR-20000042540-A (KR)
Title: Metal powder removing device of red pepper pulverizer
Inventor: LEE JEONG BOK
IPC: A23N15/00
Filed: 1998-12-26
Abstract: PURPOSE: A device for removing metal powder installed on a red pepper pulverizer to remove metal powder from red pepper powder using magnetic force is provided which has simple structure, is easy to maintain and repair and has low manufacturing costs. CONSTITUTION: A device comprises a body (17) forming a red pepper powder supply inlet (11) to communicate with an outlet of a red pepper pulverizer at its one end and a red pepper powder supply outlet (12) to communicate with the red pepper powder supply inlet at its another end; a supporting plate (13) with a handle (15) on one side; a plurality of magnetic rods (14) connected to one end of the supporting plate; a plurality of ring-shaped fixtures (16) made of rubber placed on the body adjacent the red pepper powder supply inlet to detachably attach magnetic rods to the body by elastically fixing a peripheral surface of a plurality of magnetic rods.
Patent KR-20000043660-A (KR)
Title: Device and method for displaying function key guiding data of vcr
Inventor: PARK NAM SIK
IPC: G11B15/02
Filed: 1998-12-29
Abstract: PURPOSE: A device and a method for displaying function key guiding data of a VCR are provided to display the guiding data of a function key not used for some period to help a user. CONSTITUTION: A regular time count is started since a VCR is turned on. A user sets a closing time for counting the number of key inputs and a device counts the number of key inputs rarely used. The number of the key inputs is accumulated until the closing time is done. Then, the number of the key inputs is compared with the set minimum limit value and the function keys less than the limit value are displayed to guide the usage.
Patent KR-20000045766-A (KR)
Title: Interface apparatus of atm communication terminal
Inventor: AHN JEONG JOON
IPC: H04L29/10
Filed: 1998-12-30
Abstract: PURPOSE: An interface apparatus of an ATM(Asynchronous Transfer Mode) communication terminal is to extract a function required to ATM terminals in common and to provide an integrated service to an ATM communication terminal, according to the character of the service. CONSTITUTION: A physical layer connection part(3100) extracts physical layer information from ATM cells transmitted and received, matched with an external ATM network. A physical layer framer/deframer(3200) extracts ATM cells from a frame supplied through the physical layer connection part(3100) and transmits them to a SAR(Segmentation And Reassembly) processing part(3300). The SAR processing part(3300) extracts available ATM cells out of ATM cells supplied through preprocessing and supplies them to a control processing part(3400). The control processing part(3400) processes the data provided from a user plane, composed of an IP processing module, a H.310 service processing module, a H.321 service processing module and a VOD service processing module, so as to be interfaced with the SAR processing part(3300).
Patent KR-19990035948-A (KR)
Title: 가열 조리 장치 및 그 조작 방법
IPC: H05B6/68
Filed: 1996-07-29
Abstract: 요리의 순서, 재료의 종류, 재료의 분량, 가열 방식, 가열 시간 등을 표시하는 가열 조리기에 관한 것이며, 요리책의 취급 설명서를 필요로 하지 않는 사용하기 간편한 가열 조리기 및 그 조작 방법을 제공하는 것을 목적으로 한다.  피가열물을 조리하기 위한 조리 방법을 선택하는 조리 설정키와, 조리 시간 등을 입력하는 조리 시간 설정키와, 요리책에 기재되어 있는 바와 같은 「반찬」등의 요리를 선택하는 요리 선택키와, 그 각각의 요리에 필요한 재료, 그 분량, 조리 기구, 사용하는 모든 조리 방법 및 그 시간 등을 기억하는 기억 수단과, 조리 메뉴, 조리 시간, 사전 준비의 방법 등의 조리 방법 및 조리시의 가열 조리기의 조작 방법 등을 표시하는 표시 수단과, 상기 요리 선택키에 의해 선택된 요리마다 필요한 정보를 식별하고 표시 수단에 표시하는 등의 제어를 하는 제어 수단을 구성한다.
Patent KR-19990063715-A (KR)
IPC: G11C16/02
Filed: 1996-02-06
Abstract: A solid state memory for emulating a disk drive comprising: translation means for translating a logical sector address to a main memory address; a main memory composed of non-volatile memory cells erasable in blocks; characterized in that a first pointer is used to point to an unwritten location in main memory, and a second pointer is used to point to the next unerased erasable block in sequence to the erasable block containing the said unwritten memory location; control means being provided to ensure that there is always at least one erasable block in the erased condition between the first and second pointers.
Patent KR-19990072193-A (KR)
Title: 핵 수용체 리간드 및 리간드 결합 도메인
Filed: 1996-12-13
Abstract: 본 발명은 핵 수용체 특히, 티로이드 수용체(본원에서는 "TR"로 언급함)의 3차 구조를 기초로한 핵 수용체 합성 리간드의 생성을 위한 조성물 및 이들의 새로운 방법 특히, 컴퓨터를 사용한 방법을 제공한다.  또한, 결정, 핵 수용체 합성 리간드 및 관련된 방법을 제공한다.
Patent KR-19990077138-A (KR)
Title: 저장 능력이 향상된 랩 재료
IPC: B05D1/28
Filed: 1997-01-08
Abstract: 본 발명은  음식물과 같이 상하기 쉬운 물질의 보존뿐만 아니라,  각종 물품의 포장 및 보호에 사용하기에 적당한 시이트형 재료에 관한 것이다.     보다 구체적으로는,  본 발명은  제 1 면과 제 2 면을 갖는 시이트 재료를 포함하는 저장 랩 재료를 제공한다.     제 1 면은  사용자에 의한 활성화 전에 나타나는 접착 박리력보다  사용자에 의한 활성화 후 더 큰 접착 박리력을 나타내는 활성면을 포함한다.     저장 랩 재료는  상이한 접근 방법에 의해 활성될 수 있지만,  소정의 실시예에서 활성면은  시이트 재료상에 가해진 외부적에서 적용된 힘에 의해 활성가능하다.     상기 힘은  시이트 재료와 수직 방향으로 가해진 외부에서 적용된 압축력일 수 있다.     본 발명에 따르면,  저장 랩 재료는  개별 영역에서 원하는 곳과 원하는 때 접착 특성을 제공하기 위해서 사용자에 의해 선택적으로 활성가능하다.     물질의 표면상 접착제 또는 접착제형 물질의 사용은  음식물등과 같이 상하기 쉬운 물품이  효과적으로 보존될 수 있도록 재료 및 목표면의 배리어 씰 이상의 목표면에 대해서 배리어 씰을 성형하기에 충분한 활성화 후의 접착 박리력을 제공한다.    본 발명의 저장 랩 재료는,  소정의 물품에의 직접 적용,  소정 물품의 밀폐 및 그 자체, 및/또는 반 밀폐된 컨테이너와 조합 상태로의 고착을 포함하는, 다양한 응용 방법에 의해 다양한 물품을 밀폐하여 보호하는데 이용될 수 있다.
Patent KR-19990082005-A (KR)
IPC: G10K11/16
Filed: 1997-01-23
Abstract: A soundabsorbing element consisting of a sheet of material with holes arranged in it. The sheet of material is self-supporting, and the holes are formed of microslits (1) that are distributed spaced from each other in the width and length of the sheet. Each slit has an elongated shape narrower at the ends at least part of the sheet close to each slit partly has been partly pressed out of the plane of the sheet. The microslits have a maximum width of approximately 0.01 to 0.8 mm and a length of 3-20 mm, preferably 4-10 mm, and most preferably 5-6 mm.
Patent KR-20000005495-A (KR)
Title: Process for the manufacture of surfactants containing branch chain alkyl groups
Inventor: CONNOR DANIEL STEDMAN
IPC: C07C15/073
Filed: 1997-04-16
Abstract: PURPOSE: The Branched-chain olefins are prepared and used as feedstocks in the manufacture of detersive surfactants. CONSTITUTION: A process for manufacturing comprises: compound, which comprises CO and H2, producing step; alpha-olefin, which has branch in the middle or middle part of the chain, making step by reacting the mixture of CO and H2 in the presence of catalyst under the Fischer-Tropsch condition; Branched-chained olefins separation step from the mixtures.
Patent KR-20000064948-A (KR)
Title: 화상 처리 장치 및 화상 처리 방법
IPC: G06T15/00
Filed: 1998-02-18
Abstract: 축구 게임등의 화상 처리에서, 게임의 리얼감, 현장감을 보다 한층 높인 처리를 실시한다.  특히, 캐릭터의 움직임을 실제의 경기자의 그것에, 보다 정확하게 시뮬레이트하고, 게임의 리얼감을 향상시킨다. 
     가상 3차원 공간에서 경기자를 모방한 캐릭터의 거동을 화상 표시하는 화상 처리 장치이다.  캐릭터에 게임을 통해 관계를 갖는 목표체(예를 들면, 상대 캐릭터나 볼)와 상기 캐릭터 사이의 상호적 관계(거리 등) 또는 게임 내용에 관한 관계(센터링 영역에 있음, 등)가 소정 조건에 합치하는 소정 상태인지의 여부를 판단하고(S21 ∼ S24 등), 소정 상태가 판단될 때, 캐릭터의 시선을 목표체를 향하게 한다(S25, S26, S28 등).  특히 축구 게임에 적합하다.
Patent KR-20000010554-A (KR)
Title: New substituted pyridyl keto enols, preparation and usage thereof
Inventor: LIEB FOLKER
IPC: C07D401/04
Filed: 1997-04-28
Abstract: PURPOSE: New substituted pyridyl keto enols which may have various functional groups substituted by using various methods are provided which can be used for agrochemicals such as herbicides or pesticides and the like. CONSTITUTION: The new pyridyl-substituted cyclic keto enols, in the form of formula (I) have various intermediates and derivatives thereof, and have an excellent activity as herbicides or pesticides. Particularly in some cases, these pyridyl-substituted keto enol compounds are advantageous in producing an agrochemical which is resistant to crop. In the formula (I), V¬1, V¬2 or V¬3 is nitrogen, Het represents one of the group (1), (2), (3), (4), (5). Formulations containing the pyridyl-substituted keto enol compounds could further include diluents, bases, surfactant and the like.
Patent KR-20000016008-A (KR)
Title: Brake device and method for judging value that displays system pressure inside brake circuit included in brake device
Inventor: ERBAN ANDRIAS
IPC: B60T8/40
Filed: 1998-03-10
Abstract: PURPOSE: A method for judging brake circuit pressure for rising and falling pressure unrelated in an operator. CONSTITUTION: A brake device contains a storing tank(102), a main brake cylinder(101) having two braking circuit that contain a brake pedal(104) and an air servo brake(103), and two brake circuits(107,108). The brake circuit allots two wheels(105hl,105hr) with corresponding actuators(138hl,138hr). In addition, a wheel slip adjustor(106) is placed between main brake cylinder(101) and actuators(138hl,138hr,138vl,138vr).
Patent KR-20000022220-A (KR)
Title: Soap bar composition
Inventor: DE FERRAN MARCIA
IPC: C11D9/38
Filed: 1997-06-10
Abstract: PURPOSE: A new soap composition comprising fatty acid soap associated with mildness actives is provided, which is characterized in that silicones and other emollient agents are mixed together to give agreeable sensation of a lubricated hydrated and silky skin. CONSTITUTION: A composition for a soap bar comprises: (i) from about 0.5 % to about 5 %,by weight, of silicone; (ii) from about 0.5 % to about 5 %, by weight, of a first emollient selected from polyols, selected from glycerin, sorbitol, or mixtures thereof; (iii) up to about 5 %, by weight, of a second emollient selected from vegetable, animal or mineral oils, or free fatty acids, or mixtures thereof.
Patent KR-20000050317-A (KR)
Inventor: CHOI GEUM HO
IPC: B60N2/00
Filed: 1999-01-05
Abstract: PURPOSE: A light seatframe structure for driver's seat for passenger car is provided to lighten driver's seat and to simplify assembly processes. CONSTITUTION: A light seatframe structure for driver's seat for passenger car contains the following characteristics: to form a structure(1), both end of which is protruded and support a light seatframe(10), where specially the structure has many curved parts(2) to absorb an import, and the end of the structure has ribs(3) curved toward the lower.
Patent KR-20000050809-A (KR)
Inventor: JEON BYUNG UK
IPC: F16H59/20
Filed: 1999-01-15
Abstract: PURPOSE: A method for controlling a transmission pattern of an automatic transmission in a vehicle is provided to enhance the performance of a transmission pattern in a transmission controller and to vary the transmission pattern by automatically changing speed in the optimum transmission pattern. CONSTITUTION: A five-level transmission pattern is set up in a transmission controller up to the highest vehicle velocity from the lowest vehicle velocity. The opening amount of a throttle valve is sensed. The transmission pattern is set up according to the decided acceleration intention by deciding the acceleration intention based on the opening amount of the sensed throttle valve. A vehicle travels in the set up transmission pattern. It is judged whether a kick down transmission occurs. With the generation of the kick down transmission, the acceleration intention is reset up by multiplying the acceleration intention through a weighted value. The vehicle travels by selecting the transmission pattern corresponding to the reset acceleration intention.
Patent KR-20000050927-A (KR)
Title: Compressor
Inventor: CHO SEONG HAE
IPC: F04C18/356
Filed: 1999-01-15
Abstract: PURPOSE: A compressor is provided to reduce the consumed electric power by attenuating the load caused by a vane and compressed gas during compression and improve the refrigeration by minimizing back leak generated during compression by decreasing a gap between the inner periphery of a cylinder and the outer periphery of a roller. CONSTITUTION: In a compressor having a roller combined with a cam(3a) of a rotating shaft(3) for eccentrically rotating with slidably contacting with a vane(15), simultaneously with slidably moving following the inner periphery of a cylinder(6), the roller includes a first roller(30) movably combined in the outer periphery of the cam of the shaft, a second movably roller(40) combined in the outer periphery of the first roller for slidably moving following the inner periphery of the cylinder, and an oil injection part(50) evenly cut following shaft direction to the one side of the outer periphery of the first roller for forming a regular area of hole between the first and the second roller when the first roller and the second roller combined with each other.
Patent KR-20000051298-A (KR)
Inventor: KIM CHANG HWAN
IPC: H01L21/027
Filed: 1999-01-20
Abstract: PURPOSE: A method for forming a pattern of a semiconductor device is provided to form a pattern uniformly without using a correction pattern. CONSTITUTION: According to a method for forming a pattern of a semiconductor device, gate patterns(15) are formed perpendicularly to active patterns after forming the active patterns on a semiconductor substrate(13). After forming an interlayer dielectric(17) on the whole surface of the semiconductor substrate to cover the gate patterns, mask patterns are formed on the interlayer dielectric perpendicularly to the gate pattern. After increasing the space between the mask patterns by wet-etching the mask patterns, a contact hole revealing the semiconductor substrate is formed by etching the interlayer dielectric between the gate patterns by a self-align method using the mask patterns with increased space as an etch mask. And after removing the mask patterns, a conductive layer is formed to fill the contact hole. A conductive pad(25) separated by the interlayer dielectric is formed by polishing the conductive layer and the interlayer dielectric with a CMP(Chemical Mechanical Polishing). The wet etching of the mask pattern is performed using HF or NH4F solution and the mask patterns are formed in a pillar shape. Because the conductive pad is formed after etching the interlayer dielectric using the pillar mask patterns as an etching mask, the conductive pad is formed uniformly without a correction pattern.
Patent KR-19990046450-A (KR)
Title: 대나무기름추출방법
Filed: 1999-03-13
Abstract: 대나무를 채취하여 가로로 일정규격으로 절단하여 절단된 토막을 세로로 2등분하여 준비된 적재통에 넣고 뚜껑을 닫고 장치가마에 추출구가 아래로 향하게 하여 추출관을 연결되게 하여 장치하고 서서히 가마에 열을 가하여 대나무 기름을 추출하는  방법에 관한다.
Patent KR-20000060467-A (KR)
Inventor: KIM YEONG GEUN
IPC: C07D307/62
Filed: 1999-03-16
Abstract: PURPOSE: A process of preparing a new ascorbic acid derivative having antioxidant activity, showing a relatively high solubility to water and an organic solvent and high stability in an aqueous solution and excellent in skin absorption and thermal stability is provided which produces the title compound useful as raw material for cosmetics, medicines, foods and feeds. CONSTITUTION: The ascorbic acid derivative of formula 1 having antioxidation effect is prepared by reaction of a compound of formula 4 with polyethylene glycol of formula 5 and hydrolysis with an acid catalyst. In formula, R1 and R2 are the same or different H or (CH2CH2O)nOR3(n is an integer from 2 to 400, R3 is C1-10 lower alkyl), R4 and R5 are the same or different H, methyl or ethyl, or -(CH2)m- by binding R4 and R5(m is 4 or 5), R6 is H, benzyl or paramethoxybenzyl.
Patent KR-20000061845-A (KR)
Inventor: LEE TONG HYEONG
IPC: H04B1/40
Filed: 1999-03-31
Abstract: PURPOSE: A method and apparatus for changing a charging limit money of an electronic card is provided to offer a convenience to a user by changing the charging limit money using changing information of the charging limit money in the case that the charging limit money is changed. CONSTITUTION: A display unit(120) displays call information, a charged money list and a transmitting error. A tone signal generating unit(130) generates a sound regarding the call and the transmitting error. A wireless signal processing unit(140) receives a wireless signal and judges as to whether the received wireless signal is general wireless call information or information related to a money charge. An information pattern judging unit(150) checks a signal transmitted from the wireless signal processing unit(140) to judges as to whether the signal is money charge information or charge limit money change information and a check-sum error is occurred in the signal. A memory(190) stores an encoding key value, a specific variable when changing a money charge and a charge limit money and information regarding the charge money and the charge limit money. An information processing unit(180) encodes information related to the money charge using the encoding key value stored in the memory(190).
Patent KR-20000066640-A (KR)
Inventor: PAK CHEOL JU
IPC: A47J37/07
Filed: 1999-04-19
Abstract: PURPOSE: A chicken roaster which can prevents the roasted chicken from polluting with ash or soot, which can extract the oil contained in the chicken and uniformly cook the chicken without overcooking the chicken and which can select the fuel freely among charcoal, wood, electricity and gas is provided. CONSTITUTION: A fireproof pottery chicken roaster using charcoal fire, wood fire, electricity and gas comprises multiple containers made of fireproof pottery for receiving chickens, an iron rod for skewering the fireproof pottery containers, a support for carrying on the containers and rod, a fuel container for heating the fireproof pottery containers, electrical heating wire or gas burner, an electrical motor for driving the support, a blower for blowing air toward the fuel and a drawer for collecting the burned ash.
Patent KR-20000066787-A (KR)
Inventor: PARK SEONG U
IPC: F16H61/04
Filed: 1999-04-21
Abstract: PURPOSE: An automatic transmission power on 3-4 up shift control method of is provided to eliminate the change of torque inputting to an automatic transmission by duty control. CONSTITUTION: A TCU(transmission control unit) outputs a duty control signal with a duty(Du,65%) to PCSV-B as a drive unit by power-on 3-4 up shift request signal. The TCU outputs the duty control signal of duty ratio(delta Du) having ascent angular degrees of alpha%/sec(about 15 angular degrees) and decides the approach the duty of 100%. If the duty ratio doesn't approach to 100%, the duty control signal is outputted to the drive unit for predetermined time.
Patent KR-19990088007-A (KR)
IPC: C08F8/32
Filed: 1999-04-30
Abstract: 본 발명은 높은 습윤 화합물 형성을 가능하게 하기 위한 방법에 관한 것이다.  본 발명의 방법은 폴리알킬렌 그래프된 폴리(알케닐 벤젠-co-말레이미드)폴리머 생성물을 형성하기 위해 충분한, 상당히 건조한 조건하에서 말레이트화된 폴리알킬렌과 알킬 디아민을 폴리(알케닐 벤젠-co-말레이미드) 폴리머와 반응시키고 ; 고무제형내에 폴리알킬렌 그래프트된 폴리(알케닐 벤젠-co-말레이미드)폴리머 생성물을 분산시켜 상대적으로 높은 습윤 화합물을 생성하는 것을 포함한다.  본 발명은 또한 고무 화합 조성물과 그 조성물로부터 제조된 제품을 시도하고 있다.
Patent KR-20000073405-A (KR)
Title: Internet subscriber network system
Inventor: KIM CHEOL HWAN
IPC: H04L12/28
Filed: 1999-05-10
Abstract: PURPOSE: An internet subscriber network system is provided to transmit a data signal by using a 10M ethernet, a 100M ethernet, a 1G internet technology without a digital signal manner, to switch an ethertnet packet from a switching node to a desired root to build a subscriber connecting network, so as to supply cheap and super speed internet services. CONSTITUTION: Community centers are connected to a gigabit ethernet port of an internet backbone network through a first ray path to directly transmit an ethernet packet, and supply a community information server and a routing function to support a logical segmentation of a subscriber group, then perform a switching for connecting remote node devices to the backbone network of the gigabit ethernet port. The remote node devices are connected to the community centers through a second ray path, and transceive a giga optical signal having a signal format according to an ethernet media connection controlling protocol. The remote node devices have transmitting functions of the ethernet packet, and perform ethernet switchings of central node devices to connect the central node devices to one of the community centers by a fast ethernet interface. The central node devices share a phone line of a subscriber house, and have phone-LAN modules transmitting phone signals and local area network(LAN) data signals. The central node devices transmit the ethernet packet by the phone-LAN modules at 10Mbps to perform a switching of the ethernet packet, and connect the switched ethernet packet through one of the remote node devices and one line of two-wire phone lines, four-wire unshielded twisted fair cables, 100MFX optical cables. A subscriber equipment is connected to one of the phone-ran modules installed to one of the central node devices to divide a transmitted signal into the LAN data signal and the phone signal, and transmit the ethernet packet, which is the LAN data signal, to a LAN card to transmit the phone signal to a phone.
Patent KR-20000073981-A (KR)
Inventor: LEE SANG JU
IPC: G01M17/02
Filed: 1999-05-17
Abstract: PURPOSE: A simulation is provided to measure the noise of a trailing unit by simulation. CONSTITUTION: A leading unit(2) and a trailing unit(3) are sampled. A program for simulation outputs the area ratio of a tread block(1) in the area of the sampled portions. Herein, delta functions are obtained and then are added to each other. The sampling procedure is performed along the circumference of a tire and the sequence of delta functions is obtained thereby. According to the delta function sequence, noise is measured.
Patent KR-20010001660-A (KR)
Inventor: JUNG CHANG SEOP
IPC: A01K75/04
Filed: 1999-06-07
Abstract: PURPOSE: A buoy for cultivation and its preparation method are provided, to compress the inside air and to prevent the compressed air from being escaped from the buoy. CONSTITUTION: The buoy for cultivation comprises a floating body which contains the compressed air and is made of plastic; an air valve part(20) where air is injected into the floating body; and a rope engagement ring. The air valve part(20) comprises a connection hole(21) which is formed in the some part of the floating body; a connection bolt(22) which is adhered closely to the connection hole(21), contains an engagement path(22a) in the center, and is made of plastic; an air control valve(23) which is adhered closely to the engagement path(22a) of the connection volt(22); and a sealing plate which seals the upper part of the connection hole(21) containing the connection bolt(22) and the air control valve(23) integrally.