baber/WOPTO huggingface dataset:
Patent KR-20000043115-A (KR)
Title: Connection structure of fuel tank door in vehicle
Inventor: KIM JIN TAE
IPC: B60K15/00
Filed: 1998-12-28
Abstract: PURPOSE: A connection structure of a fuel tank door in a vehicle is provided to improve the assembly property of a fuel tank door by fixing a connection structure of the fuel tank door with a boss for hinge-connection, a steel pin and an E-ring. CONSTITUTION: In producing a hinge(20) for a fuel door, two panels are each arranged on both sides, and a groove is formed in the middle of one pair of the panels(21). Then bolt holes(21a,11a) formed in the groove are inserted on combining with the fuel door(10). The fuel door is combined to a panel for supporting rotation of the hinge and is prepared with the bosses inserted in the central groove of the panel(21) on both sides. Thus, the fuel door is fixed by using each steel pin(13) on both sides after combining the panel with the boss. An E-ring combination groove(13a) is formed on a lower end of the steel pin so that it is fixed with an E-ring(14) after inserting the steel pin.
Patent KR-20000043535-A (KR)
Title: Method for spreading flames when igniting gas boiler
Inventor: PARK JAE KYEONG
IPC: F23N3/00
Filed: 1998-12-29
Abstract: PURPOSE: A flame spreading method is provided to ignite gas sprayed from burner pins by transmitting flames generating from an ignition plug to respective burner pins when igniting a gas boiler. CONSTITUTION: A fan is driven to discharge residual gas in a combustion chamber. A gas valve is opened to supply gas after sufficiently discharging the residual gas. Electricity is supplied to an ignition plug to ignite flames to the gas supplied from burner pins adjacent to the ignition plug. The ignition is sensed. If the gas is ignited, the voltage for driving a fan is set in minimum value and time for driving a fan is sensed. The driving time of a fan is decided. If a certain time is not elapsed, a fan is driven at a minimum speed. After a certain time, the voltage for driving a fan is reset in an ignition value and driving time is sensed. After a certain time, a step for setting of a first voltage for driving a fan and sensing driving time is performed repeatedly.
Patent KR-20000043626-A (KR)
Title: Fabrication method of semiconductor device
Inventor: MUN YEONG HO
IPC: H01L21/28
Filed: 1998-12-29
Abstract: PURPOSE: A method for forming a lower electrode of a capacitor in a semiconductor device is provided to prevent a connection failure and to secure a process margin. CONSTITUTION: A process for forming a lower electrode(260,280) of a capacitor in a semiconductor device includes a step of forming a first dielectric layer(22) having a hole therein on a semiconductor substrate(20), and a step of forming a contact plug(23) in the hole. The process further includes a step of forming a second dielectric layer(24) and a nitride layer(25) on the first dielectric layer(22), a step of forming a first conductive layer(260) over the second dielectric layer(24) to connect with the contact plug(23), a step of forming a sacrificial pattern(27) on the first conductive layer(260), a step of forming a second conductive layer(280), a step of forming a mask layer(29) for etch barrier on the second conductive layer(280), a step of exposing the nitride layer(25) by etching back of the second conductive layer(280), and a step of removing the mask layer(29) and the sacrificial layer(27).
Patent KR-20000045540-A (KR)
Title: Lan data dedicated network system of wideband wireless local loop and data service method
Inventor: LEE CHANG JOO
IPC: H04L12/28
Filed: 1998-12-30
Abstract: PURPOSE: A lan data dedicated network system of a wideband wireless local loop and the data service method thereby are provided to prevent data calls from encroaching on PSTN calls, as all data subscribers share data channels allocated exclusively for data per wireless local loop LAN. CONSTITUTION: A lan data dedicated network system of a wideband wireless local loop is comprised of a plurality of subscriber terminals(10), connected with a plurality of radio interface units(20) through RS232 and LAN communication ports, and a dedicated channel for data communication in allocating channels between a plurality of radio interface units(20) and a plurality of radio ports(30) in charge of the connection and release of bearers by wireless.
Patent KR-20000047033-A (KR)
Title: Large-quantity traffic realtime monitoring device in intelligence network processing system and large-quantity traffic realtime monitoring method
Inventor: YEO GYUNG JIN
IPC: H04L12/24
Filed: 1998-12-31
Abstract: PURPOSE: A large-quantity traffic realtime monitoring device is provided to effectively manage a network by easily managing traffics in a large-quantity intelligence network. CONSTITUTION: A large-quantity traffic realtime monitoring device in intelligence network processing system includes No.7 processor(101), a first call processor(102), a second call processor(103) and a service management processor(104). The No. 7 processor(101) receives a calling transmitted to an intelligence network processing system, and uniformly distributes the calling to each call processing device. The first call processor(102) processes a call service after receiving the calling from the No.7 processor, stores a result in a shared memory, reads a content of the shared memory content at a predetermined time interval, and transmits a traffic content. The second call processor(103) receives a call from the processor(101), processes a call service, stores a result in a shared memory, reads a content of the shared memory content at a predetermined time interval, and transmits a traffic content. The call content from the first and second call processors(102,103) is reflected on a graph expression structure, and a graph of a user-desired format is outputted.
Patent KR-19990071645-A (KR)
IPC: H04L12/28
Filed: 1996-11-21
Abstract: A home network architecture has an internal digital network interconnecting devices in the home. Entertainment services are introduced into the network through network interface units that are coupled to an external network and to internal network. The network interface units are selectively directly connected by a direct circuit crossbar to set-top electronics so that video data, for example, may be directly provided from a network interface unit to the set-top electronics without jitter. A passive hub, which does not have packet routing capability, is then used to provide signal regeneration and re-transmission of other data over the network.
Patent KR-20000064473-A (KR)
IPC: G06T1/00
Filed: 1996-12-13
Abstract: A method of mapping areas of a slide includes the steps of selectively illuminating the slide from a first light source oriented generally obliquely to the surface of the slide, obtaining a first image of the slide illuminated by the first light source, selectively illuminated the slide from a second light source providing generally scattered light, obtaining an image of said second image illuminated by the second light source, and generating a map of areas of significance based on the first and second images.
Patent KR-19990076919-A (KR)
Title: 정보 처리 시스템 및 정보 처리 방법
IPC: G05B19/00
Filed: 1997-10-30
Abstract: 정보 처리 시스템 및 정보 처리 방법에 있어서, 데이타 영역 및 처리 영역으로 압축된 오브젝트는 필요한 경우에 따라 오브젝트 관리자에 의해 메모리 영역내에 제공되고 또한, 각각의 오브젝트들 사이에서 상호 교환된 정보는 정보 처리가 오브젝트 대 오브젝트를 기초로 하여 수행될 수 있도록 공통 상태 절차를 가지는 인터페이스들에 의해 제어된다.
Patent KR-19990081884-A (KR)
Title: 관절용 보철 장치
IPC: A61F2/42
Filed: 1997-01-22
Abstract: 본 발명은 인접한 뼈 부분(5)에 연결되도록 개조된 2개의 고정 부재 사이에 배열된 관절체(1)를 포함하는 사람 또는 동물에 삽입하기 위한 관절용 보철 장치에 관한 것이며, 여기에서 관절체(1)은 하나 이상의 본질적으로 나선형인 스프링 수단을 포함하고, 각각의 스프링 수단의 말단은 고정 부재에 연결된다.
Patent KR-19990087766-A (KR)
Title: 집적된 근거리 통신 시스템
IPC: H04W88/02
Filed: 1997-03-04
Abstract: 집적 근거리 통신 시스템(100)은 복수의 근거리 위치된 통신 장치(110-1 - 110-N)를 구비하고, 그 근거리 위치된 통신 장치중 적어도 하나는 근거리 인터페이스 모듈(120-1 - 120-N)에 동작되게 결합된다. 근거리 통신 링크는 비-근거리 통신 신호를 근거리 통신 신호로 변환하고 모든 근거리 통신 링크에 공통인 단일의 미리 선택된 통신 프로토콜을 사용해서 근거리 통신 신호를 송수신함으로써 적어도 하나의 근거리 인터페이스 모듈(120-1 - 120-N)을 경유해서 어떤 2개의 근거리 위치된 통신 장치(110-1 - 110-N)간에 선택 가능하게 이루어진다. 예시된 실시예(200)는 공중 지상 이동망과 관계된 적어도 하나의 이동국과, 공중 교환 전화망(260)과 관계된 적어도 하나의 무선-향상된 전화 인터페이싱 장치(210)와, 분배된 컴퓨팅 환경에서 선택 가능하게 배치된 적어도 하나의 전자 데이터 단말기와, 핸즈-프리 동작능력에 대한 적어도 하나의 무선 헤드세트를 포함한다.
Patent KR-19990087823-A (KR)
Title: 말단 알데히드의 제조방법
IPC: C07C67/38
Filed: 1997-03-07
Abstract: 본 발명은 말단 알데히드의 제조방법에 관한 것으로서, 
     두자리 유기 아인산염 리간드와 이리듐 또는 로듐으로 이루어진 촉매계의 존재하에서, 일산화탄소와 수소로 에틸렌계 불포화 유기 화합물을 반응시키는 히드로포르밀화에 의해 말단 알데히드를 제조하는 방법에 있어서, 
     상기 아인산염 리간드의 두 개의 인원자가 하기 화학식 2의 구조(Q)를 갖는 2,2′-디히드록시-1,1′-비나프탈렌 브리지 그룹에 연결되는 것을 특징으로 한다.. 
     (화학식 2) 
     
       
     
     (상기에서, R 1 및 R 2 는 수소이외의 치환체이고, R 3 및 R 4 는 같거나 또는 다른 치환된 1가 아릴기 및/또는 -O-R 5 -O-그룹을 형성하는 하나의 인원자에 연결된 OR 3 및 OR 4 중 하나로, 여기서 R 5 는 하나 또는 두 개의 아릴기를 함유하는 2가 유기기이다)
Patent KR-20000064851-A (KR)
Title: 반강유전성 액정 셀
IPC: G02F1/133
Filed: 1998-02-05
Abstract: 본 발명은 한쌍의 기판사이에 반강유전성 액정이 끼움 고정되어 이루어지는 반강유전성 액정셀의 명암비의 향상에 관한 것이다.  반강유전성 액정셀은, 기준주파수로서의 정현파전압을 액정셀에 인가함으로써 생성된 출력전압에 퓨리에 변환을 적용할 시에, 변환된 출력 전압이 기준 주파수의 기수배 및 우수배에서의 주파수 성분을 포함하는 층 구조를 갖고 있으며, 액정셀의 광학적 행로길이는 100nm 내지 800nm의 범위에 있다.
Patent KR-20000011125-A (KR)
Title: Wafer-level burn-in process and test
Inventor: KHANDROS IGOR Y
IPC: H05K3/20
Filed: 1997-05-15
Abstract: PURPOSE: A wafer-level burn-in process and test is provided, which identifies a known good die to perform a semiconductor device in a wafer level. CONSTITUTION: The apparatus for wafer-level burn-in process and test comprises: test substrates (106, 108) for having active electronic components such as ASICs (106) mounted to an interconnection substrate or incorporated therein; a metallic spring contact element (110) for effecting interconnections between the ASICs (106); and a plurality of devices-under-test (DUTs) to be located on a wafer-under-test (WUT)(102), wherein test substrates (106, 108), the metallic spring contact element (110) and DUTs are all disposed in a vacuum vessel so that the ASICs (106) and can be operated at temperatures independent from and significantly lower than the burn-in temperature of the DUTs. Thereby, it is possible to mount the precise alignment of a plurality of ASICs on the support substrate.
Patent KR-20000050910-A (KR)
Inventor: CHU DAE HO
IPC: B23K26/00
Filed: 1999-01-15
Abstract: PURPOSE: A cutting device is provided to elevate cutting speed and the quality of a cut surface when cutting a liquid crystal display panel formed of a fragile material such as glass by using a laser. CONSTITUTION: A base glass plate(100) to be cut is settled on a fixing plate. A laser cutting device(200) moves toward the glass plate and a second laser(240) irradiates laser beam to a finishing end from a starting end of the glass plate to preheat a predetermined cutting line(120). A second laser(220) following the second laser irradiates laser beam along the preheated predetermined cutting line. A nozzle(230) following the first laser disperses a coolant toward the predetermined cutting line to cool the preheated cutting line rapidly. High thermal stress is occurred due to thermal expansion and thermal contraction on the cutting line. Due to the thermal stress, a crack is created along the cutting line. The progressing direction of the crack is the same as the irradiation direction of the laser beam from the first laser. According to the vertical progressing direction to the plane surface of the glass plate is cut completely.
Patent KR-20000051150-A (KR)
Inventor: KIM HOE SUN
IPC: F16B5/02
Filed: 1999-01-19
Abstract: PURPOSE: A structure of a bolt hole for preventing a deformation of a coupling state is provided to prevent deformation of parts around a bolt hole coupled with a bolt due to a compression force by a bolt torque by forming one or more grooves or holes around the bolt hole, thereby minimizing the deformation and volume loss of a corresponding machine. CONSTITUTION: A structure of a bolt hole for preventing a deformation of a coupling state includes a first plate(10) formed with a coupling groove to be fastened with a bolt, and a second plate formed with one or more grooves or holes for reducing deformation generated when coupling the bolt in a through hole(11), wherein the second plate is formed with grooves(12) at four sides with a same height with the through hole and a grooves in the shape of crescent below the through hole.
Patent KR-20000056897-A (KR)
Title: Method for driving plasma display panel
Inventor: KANG KYUNG HO
IPC: G09G3/293
Filed: 1999-02-27
Abstract: PURPOSE: A method for driving a plasma display panel is provided to reduce the amount of generation of electromagnetic interference waves. CONSTITUTION: A method for driving a plasma display panel is constructed in such a manner that a reset step of erasing remaining wall charges from the previous sub-field, an address step of forming wall charges in a selective pixel region, and a sustain discharging step of applying AC pulses to scanning electrode lines and common electrode lines arranged in parallel with each other, to allow the pixel in which the wall charges are formed to generate light are sequentially performed in a unit sub-field. In the sustain discharging step, a single pulse is simultaneously applied to even-numbered scanning electrode lines and odd-numbered common electrode lines. Upon completion of application of the pulse to the even-numbered scanning electrodes lines and odd-numbered common electrode lines, a single pulse is simultaneously provided to odd-numbered scanning electrode lines and even-numbered common electrode lines. These two steps are repeatedly carried out.
Patent KR-20000059719-A (KR)
Inventor: LEE SANG BEOM
IPC: H04B1/40
Filed: 1999-03-08
Abstract: PURPOSE: A method for selecting telephone numbers using a database is provided, so that users can originate calls with simple key operations by presenting telephone numbers on a displayer without inputting all telephone numbers of receivers, and originate the calls even when the users do not remember the telephone numbers or short keys of memories. CONSTITUTION: A method for selecting telephone numbers using a database comprises the steps of: standing by a key input; if a user presses an optional key, analyzing values of an inputted key; deciding whether the values are numbers from '0' to '9'; if so, storing the values; presenting telephone numbers related to the inputted key values on a displayer; returning to the standing by step; if the values are not numbers, deciding whether a scroll key is inputted; if so, and if another screen exists, moving to a direction indicated by the scroll key; if the scroll key is not inputted, deciding whether a transmitting key is pressed; and if so, performing a call with a telephone number presented on a present screen.
Patent KR-19990046426-A (KR)
Title: 유전체세라믹을이용한고주파용듀얼대역통과필터
IPC: H03H9/00
Filed: 1999-03-11
Abstract: 본 발명은 유전체필터를 이용하여 두 개의 서로다른 주파수대역을 필터링처리하도록 함과 더불어, 서로다른 주파수대역의 출력신호레벨을 안정화시키고, 소형이면서도 저가격으로 제조할 수 있도록 된 유전체세라믹을 이용한 고주파용 듀얼 대역통과필터에 관한 것이다. 
     본 발명에 있어서는 신호입력단(11)과 신호출력단(12) 사이에 제 1 및 제 2대역통과필터(30,40)가 병렬로 결합되고, 상기 신호출력단(11)과 제 1대역통과필터(30)간의 접속노드는 신호보상수단(50)을 통해 접지되어 구성되며, 상기 신호출력단(12)과 제 2대역통과필터(40)간의 접속노드는 위상매칭용 인덕터(L10)를 통해 직렬로 결합하되, 상기 제1 및 제 2대역통과필터(30,40)는 유전체필터를 2단으로 직렬접속하여 구성함으로써, 제 1 및 제 2대역통과필터의 출력신호레벨이 안정화되고 주파수차단특성이 양호한 고주파용 듀얼 대역통과필터를 구현하게 된다.
Patent KR-20000060689-A (KR)
Inventor: KANG U TAK
IPC: H01L21/76
Filed: 1999-03-18
Abstract: PURPOSE: A device isolation and a method for manufacturing the device isolation are provided to reduce the junction leakage current and the junction capacitance by forming LOCOS(LOCal Oxidation of Silicon) isolation film having a larger width which is lager than a width of a trench at a lower portion of the trench. CONSTITUTION: A device isolation comprises a trench(18) which is formed by etching a part of a semiconductor substrate(10). A first device isolation film(22) is formed at a lower portion of the trench(18). The width of the first device isolation film(22) is larger width than the width of the trench(18). A second isolation film(24) is filled in the trench(18). A nitride film spacer(20) is positioned between the trench(18) and the second device isolation film(24). The first device isolation film(22) is a LOCOS(LOCal Oxidation of Silicon) isolation film.
Patent KR-20000061129-A (KR)
Title: Circular rubber attachment by using negative pressure
Inventor: LEE CHANG JIN
IPC: F16B47/00
Filed: 1999-03-18
Abstract: PURPOSE: A circular rubber attachment by using a negative pressure is provided to make the force of attachment stronger and expand the force longer by forming a rubber lid on an attachment element and attaching the attachment on a wall after forming a negative pressure in the between the rubber lid and the attachment element. CONSTITUTION: A circular rubber attachment by using a negative pressure includes a rubber lid(1) having a spiral part, and an inlet(3) made of rubber material having a spiral part(2) which becomes narrower downward and having a complementary size with the rubber lid, wherein the circular rubber attachment is used by drawing the rubber lid, the inlet part is pressed to draw out air and then inserting the rubber lid again into the lid, then a negative pressure is formed, thereby the attachment force becomes stronger.
Patent KR-20000065346-A (KR)
Inventor: YUN KYU JUNG
IPC: E05B5/00
Filed: 1999-04-02
Abstract: PURPOSE: A handle for a distributor part is provided to adjust a rotation direction of a knob and a keeper, and force out the keeper by a spring force if the knob is moved up. CONSTITUTION: In a handle for a distributor part, if a knob is moved up, a keeper is forced out by a spring force. If a position of a stopper and a position of the keeper are changed, their horizontal rotation directions are changed. A rotation shaft(6) and a knob(7) are connected to a body(1) in order to make a hinge-movement. A cam surface(7a,7b) is made on a knob shaft. A compression spring is operated on the rotation shaft. If the knob is moved up by a button, the keeper(2) is moved back by a spring(13) force. At this time, if the knob is rotated horizontally by 90 deg., the keeper is released from a door frame without a friction. The knob and the keeper can be rotated in an opposite direction by 90 deg., when a position of the stopper(23) and a direction of the keeper are changed and coupled to each other. Therefore, a body is selectively mounted to the right side or the left side of the door. A waterproof structure is made by O-ring(9) and a pad(10).
Patent KR-20000065398-A (KR)
Title: Apparatus for rapid thermal processing
Inventor: PARK SEUNG BAE
IPC: H01L21/324
Filed: 1999-04-02
Abstract: PURPOSE: An apparatus for a rapid thermal processing(RTP) is provided to shorten a manufacturing process by performing a thermal process regarding two semiconductor wafers. CONSTITUTION: An apparatus for a rapid thermal processing(RTP) comprises a chamber(200), a boundary wall, a heater, a first holder and a second holder. The chamber has an outer wall having a quadrilateral section. The boundary wall divides the chamber into first and second regions, connected to both side surfaces of the outer wall. The heater heats a semiconductor device, established on the boundary wall and outer wall. The first holder holds the semiconductor device, provided in the first region of the chamber. The second holder holds the semiconductor device, provided in the second region of the chamber. When a thermal process is performed in the chamber, two semiconductor devices are thermally processed simultaneously.
Patent KR-19990083388-A (KR)
Title: 에칭방법
IPC: H01L21/311
Filed: 1999-04-22
Abstract: 반응 생성물의 제거 공정과 세정 공정을 생략하여도, 산화막과 질화 규소막을 적층한 층간막에 컨택트홀을 형성할 수 있는 에칭 방법을 제공한다. 
     본 발명에 따른 에칭 방법은, 질화 규소막(304)과 그 위에 형성된 산화막(303)으로 이루어지는 적층막을 에칭하는 것이다.  이 에칭 방법은, C 4 F 8 계 가스(306a)에서 상기 산화막(303)의 에칭을 개시하고, 상기 질화 규소막(304)이 노출하기 전에 상기 C 4 F 8 계 가스에서의 에칭을 정지하는 공정과, 에칭 가스를 C 4 F 8 계 가스(306a)에서 CHF 3 계 가스(306b)로 전환하여 잔여 산화막(303)과 상기 질화 규소막(304)을 에칭하는 공정을 구비하는 것이다.
Patent KR-19990088171-A (KR)
Title: 반도체구조물및그제조방법
IPC: H01L21/768
Filed: 1999-05-11
Abstract: 본 발명은 이중 절연 박막 스택(double insulating film stack)을 마스크로 채용하여 전체 칩에 대한 콘택트 도전체 형상을 규정하고, 게이트 도전체 형상을 규정한 이후에 노출된 도전층 상에 비교적 얇은 손상 방지층을 제공하여, 게이트 도전체에 대한 무경계 콘택트를 확산부에 제공하는 것에 관한 것이다.  일 실시예에서, 기판 상에 절연층을 형성하고, 절연층 상에 도전층을 제공하고, 도전층 상에 제 2 절연층을 제공하고, 제 2 절연층 상에 제 3 절연층을 제공하고, 제 2 및 제 3 절연 층의 기선택된 부분을 제거하고, 제 2 및 제 3 절연층이 제거된 부분 내에 손상 방지층을 제공하고, 제 3 절연층의 기선택된 부분을 제거하고, 손상 방지층을 제거하고, 도전층의 노출된 부분을 제거하고, 제 2 절연층의 노출된 부분을 제거함으로써 무경계 콘택트가 형성된다.
Patent KR-20000073747-A (KR)
Inventor: LEE KWANG YEOR
IPC: B29C43/58
Filed: 1999-05-13
Abstract: PURPOSE: A method of press forming ethylene vinyl acetate mixture material and press apparatus are provided to circumvent a problem that waste material is generated when a foam forming product is produced, by heat/press forming the ethylene vinyl acetate ("EVA") mixture material made in a type of granule or a rod, so as to prevent environment pollution and are also provided to increase productivity of products by offering a press apparatus constituted with two stages, which uses the raw material in a type of granule as it is. CONSTITUTION: In a method of press forming ethylene vinyl acetate mixture material and press apparatus, the method comprises a preheating process under which metal moulds(2, 3, 4, 5) are preheated at early process by heaters(7) mounted on an upper and lower moulds(2, 3, 4, 5), the temperature of the heater(7) being set to a predetermined value; a material injection and pressing process under which an EVA mixture material in a type of granule or rod is input into a cast section formed on a central portion of a first and second lower metal(4, 5) moulds when the temperature of the metal moulds(2, 3, 4, 5) reaches to the set temperature and simultaneously the first and second lower metal moulds(4, 5) are raised; a material pressing process under which the EVA mixture material is pressed for a set time; and a foaming and ejecting process under which the first and second lower metal moulds(4, 5) are forced to descend by means of a cylinder(17) when the set time is reached, the material is foamed and separated from the moulds(2, 3, 4, 5), and then the product is ejected.
Patent KR-20000005661-A (KR)
Inventor: KANG SANG BEOM
IPC: H01L21/02
Filed: 1999-05-14
Abstract: PURPOSE: A method is provided to form a selective metal layer under the low temperature of°C 500. CONSTITUTION: A method of forming a selective metal layer on a semiconductor device having an insulating layer and a conductive layer comprises the steps of: forming a sacrificial metal layer only on the conductive layer by supplying a sacrificial metal source gas having a characteristic of selective evaporation regarding the insulating layer and the conductive layer; and substituting an evaporated metal layer for the sacrificial metal layer by supplying metal halogen compound gas having a cohesive power of halogen smaller than a metal atom of the sacrificial metal layer.
Patent KR-20010001659-A (KR)
Inventor: LEE BYEONG HO
IPC: D07B1/06
Filed: 1999-06-07
Abstract: PURPOSE: A reinforcing steel cord for rubber products such as steel belted radial tires or conveyor belts having improved rubber penetration and ageing adhesive force to rubber material by improving the mechanism of a twisted core to minimize the continuous contact of the core and external wires and forming sufficient interspaces between the core and the external wires is provided, which is most preferably used as a reinforcing material for steel belted radial tires. CONSTITUTION: In the steel cord, the pitch of the twisted core is set to allow the core to be twisted 0.2 to 2 times within the pitch of the cord, thus preferably forming sufficient interspaces between the core and the external wires in addition to the interspaces between the external wires. Since the rubber material is completely filled in the steel cord due to such interspaces, the steel cord is remarkably improved in buckling fatigue resistance, rubber penetration, air permeability, rubber adhesive force, ageing adhesive force relative to rubber, protection of brass coated surfaces of wires, and workability during a process of producing rubber products.