baber/WOPTO huggingface dataset:
Patent KR-20040033466-A (KR)
Inventor: KIM JIN SEON
IPC: H02J7/00
Filed: 2002-10-14
Abstract: PURPOSE: A battery pack is provided to prevent a lowering of an induced electromotive force and to prevent an increase of resistance by intercepting a heat transfer from a battery cell to a secondary coil at a charging time. CONSTITUTION: A battery pack(100) comprises a magnetic field receiving part for generating an induced electromotive force by inducing a magnetic force from a magnetic field sending part of a charger, and a battery cell(110) charged by the induced electromotive force from the magnetic field receiving part. An adiabatic plate(120) is inserted between the magnetic field receiving part and the battery cell. A high temperature heat energy conduction from the battery cell to the magnetic field receiving part is intercepted through the intermediary of the adiabatic plate. The adiabatic plate is a resin or synthetic rubber added with a ferrite.
Patent KR-20030031453-A (KR)
Title: Optical device
Inventor: JOJIKI MASAO
IPC: G02B7/00
Filed: 2002-10-15
Abstract: PURPOSE: An optical apparatus is provided to enable a user to view an object placed over a head without excessive eye-rolling and head-stooping. CONSTITUTION: A frame(F) is configured to be supported by a wearer. At least one lens unit(3) is connected to the frame so that the wearer views an object. The lens unit comprises a deflector which a view direction to which the wearer looks the lens unit. The lens unit is configured to provide an object-magnified image. At least one spectacle lens(14) is supported by the frame. The lens unit is fixed to a part of the spectacle lens so that the wearer views an image, which is not magnified by the lens unit, via the other part of the spectacle lens.
Patent KR-20040033965-A (KR)
Title: Method for regulating tapasin-dependency of MHC class I molecules
Inventor: AHN GWANG SEOK
IPC: C07K14/74
Filed: 2002-10-16
Abstract: PURPOSE: A method for regulating tapasin-dependency of MHC class I molecule is provided, thereby regulating the cell surface expression of a specific histocompatibility antigen, and treating several symptoms associated with the tapasin-dependency of MHC class I molecules. CONSTITUTION: A mutant MHC class I molecule is characterized in that an amino acid residue at position 114 in wild MHC class I molecule is substituted from the basic residue to the acidic residue or from the acidic residue to the basic residue, wherein the basic residue is histidine, arginine or lysine and the acidic residue is aspartic acid or glutamic acid. A recombinant expression vector contains the gene encoding the mutant MHC class I molecule. A method for regulating tapasin-dependency of MHC class I molecules comprises substituting the amino acid residue at position 114 from the basic residue to the acidic residue or from the acidic residue to the basic residue.
Patent KR-20040036810-A (KR)
Title: System for informing the state of driving in cellular phone and method
Inventor: KIM SEUNG HAN
IPC: H04W4/04
Filed: 2002-10-24
Abstract: PURPOSE: A mobile phone announcement system and method during driving is provided to inform a caller of a current state of a user(callee) through an announcement that the callee is driving a car. CONSTITUTION: A car(60) includes a signal generator(62) which generates a CW signal regularly and transmits scores of Watt power externally. A mobile phone(10) has a sensor(12) for wirelessly sensing a distance between itself and the car(60) and includes a program supporting an SMS(Short Message Service). A HLR(Home Location Register)(20) stores subscriber information and position information. When an on-driving activation message is transmitted, the HLR(20) transmits a parameter to a mobile switching center(40) to inform that a callee is driving a car in response to an incoming call which has been made to a mobile phone(10) from an origination terminal(50) during driving. The mobile switching center(40) transfers the on-driving message to the origination terminal(50) and the incoming call to the HLR(20). An incoming recording server(30) generates an origination information DB(32) by subscribers and stores origination information such as an origination number or a short message.
Patent KR-20030069779-A (KR)
Title: Thin film transistor and method for manufacturing thereof
Inventor: HAN MIN GOO
IPC: H01L21/336
Filed: 2002-10-25
Abstract: PURPOSE: A thin film transistor(TFT) and a fabricating method therefor are provided to form a polycrystalline silicon TFT having high mobility, a low leakage current and excellent electrical reliability regarding high temperature carrier stress by growing uniform grains not smaller than 4 micrometer so that one grain boundary is formed in a channel region. CONSTITUTION: An insulated substrate is prepared. A heat intercepting layer is disposed on the insulated substrate in a predetermined channel formation region, made of a material that has low heat conductivity to control vertical heat transfer in an annealing process. A semiconductor layer is formed on the insulated substrate and the heat intercepting layer, having a source region, a drain region and a channel region between the source region and the drain region such that the channel region overlaps the heat intercepting layer. An insulation layer is formed on the semiconductor layer in the channel region. A gate electrode is formed on the insulation layer, overlapping the channel region.
Patent KR-20040038033-A (KR)
Title: compulsion air feeding device of an incinerator
Inventor: KIM HYANG WON
IPC: F23N3/02
Filed: 2002-10-31
Abstract: PURPOSE: A forcible air supply device of an incinerator is provided to promote complete combustion of waste by forcibly supplying external air to a waste layer according to the accumulated amount of waste and the combustion state, to reduce the cost of oil by reducing the time for combustion, and to sharply reduce loss on ignition of bottom ash. CONSTITUTION: A forcible air supply device of an incinerator(100) comprises a blower forcibly blowing external air to the inside of the incinerator; supply pipes(130) forming plural air nozzle holes(136); and a valve(120) controlling the supply amount of the external air forcibly blown to the supply pipes. The supply pipes include first supply pipes(132) formed along the periphery of the inner wall of the incinerator and second supply pipes(134) protruded upward from the bottom surface of the incinerator.
Patent KR-20040038210-A (KR)
Title: A electric filter of the air cleaner
Inventor: CHO HYEON UK
IPC: B03C3/34
Filed: 2002-10-31
Abstract: PURPOSE: An electrostatic dust filter in an air cleaner is provided to perform dust collection and deodorization filtering at the same time and thus, to reduce cost and time, and to reduce power consumption and improve dust collection efficiency. CONSTITUTION: The electrostatic dust filter in an air cleaner includes an ionizer(66) for charging dust in the air with electricity; a collector(65) for adsorbing charged dust particles at the ionizer(66) and removing impurities in the air; and an illuminator disposed at one side of the collector(65) to generate a light and having an illuminating unit for activating a photocatalyst. Between the electrostatic dust filter and a fan(60) is a barrier(70) for dividing inside of a cabinet(50) into a blowing chamber and a collecting chamber.
Patent KR-20040039847-A (KR)
Title: Mode-switch apparatus for magnetic recording/reading apparatus
Inventor: CHOI DO YEONG
IPC: G11B15/02
Filed: 2002-11-05
Abstract: PURPOSE: A mode switch device of a magnetic record/playback system is provided to be installed under a cam gear so that it reduces the number of parts and simplifies an assembling process. CONSTITUTION: The device comprises a cam gear(30), an elastic brush(40) and an FPC(Flexible Printed Circuit, 50). The cam gear(30), rotationally installed on a main deck, loads or unloads a sub deck on or from the main deck. The elastic brush(40), installed at a bottom of the cam gear(30), includes plural contact parts. The FPC(50) includes a mode sensing pattern which the elastic brush(40) contacts, and faces a bottom face of the cam gear(30). A holding groove, formed at the bottom of the cam gear(30), holds the elastic brush(40).
Patent KR-20040039904-A (KR)
Title: Automatic channel change method and apparatus
Inventor: LEE GI HUN
IPC: H04N21/4725
Filed: 2002-11-05
Abstract: PURPOSE: A method and an apparatus for automatically switching a channel are provided to continuously watch a broadcasting program which is divided into a plurality of broadcasting programs by automatically returning to a previous channel when a continuous next broadcasting program is started. CONSTITUTION: If a reference region is selected for discriminating a broadcasting program, a microprocessor stores position information and channel information of the reference region. The microprocessor extracts broadcasting program discriminating information from video data corresponding to the position of the reference region, and stores extracted broadcasting program discriminating information(300). The microprocessor checks whether information same to stored broadcasting program discriminating information is extracted from video data corresponding to the position of the reference region among video data received from the stored channel(302-308). If information same to stored broadcasting program discriminating information is extracted, the microprocessor switches a current channel to the stored channel(312).
Patent KR-20040042437-A (KR)
Title: Chairs of office use having apparatus for fixing rollers
Inventor: PARK SEONG WI
IPC: A47C9/02
Filed: 2002-11-14
Abstract: PURPOSE: An office chair mounted with a wheel fixing device is provided to fix wheels of the chair by operating a lever and thus, to maximize work efficiency of office workers. CONSTITUTION: The office chair includes a seat; a connecting pipe connected to a lower end of the seat; a base connected to the connection pipe and including a plurality of wheels(40) attached to a lower end thereof; a fixed lever mounted on one side of the seat or on the arm rests of the seat; and a wheel fixing device(60). The wheel fixing device includes a wire(61) connected to the fixed lever; and a fixing piece(63) installed at one side of the wheel(40). Particularly, the fixing piece(63) is operated as the wire(61) is pulled, and coupled to both sides of a hinge shaft(62) installed at a wheel cover(41) to provide frictional force to the side of each wheel(40).
Patent KR-20040045588-A (KR)
Title: Feeding Belt for Strip-Shaped Elements
Inventor: CHOI GI YEOL
IPC: B65G15/42
Filed: 2002-11-25
Abstract: PURPOSE: A connecting method between a belt main body and a finger is improved to prevent escaping of the finger from the belt main body and slipping of element by the finger. CONSTITUTION: In a transferring belt of a strip shape element, a plurality of fingers(30) is installed in a certain pitch in a belt main body(20). The belt main body comprises a mounting hole(22) to connect an elastic hinge portion(34) and a mounting portion(32) of the finger. An opening hole(24) is formed in lower part of the mounting hole to connect a bent holding portion(38) of the finger. The mounting portion and the elastic hinge portion are formed integrally, and the bent holding portion and the elastic hinge portion are connected by a direction converting portion(36).
Patent KR-20040049093-A (KR)
Title: A centering jig for door hinge assembly
Inventor: SONG JI MYEON
IPC: B25B11/00
Filed: 2002-12-03
Abstract: PURPOSE: A centering jig is provided to minimize the installing distribution, to improve the door appearance and to minimize the distribution of opening force of a door by assembling a door hinge assembly in a chassis after arranging the assembling position of the door hinge assembly. CONSTITUTION: A pin portion(23) is inserted in position deciding holes by forming a taper portion(25) in the tip and having a square sectional area. A stopper portion(27) limits the insertion of the pin portion against each position deciding hole by forming in a square plate shape in the back of the pin portion. A handle portion(31) is formed in the stopper portion through a connecting rod. Thereby, a chassis and a door hinge assembly are assembled by arranging an assembling position through the position deciding holes.
Patent KR-20040048706-A (KR)
Title: Producing method of photograph album cover with window and a photograph album cover producted by this method
Inventor: JUNG JOONG SUP
IPC: B42D3/00
Filed: 2002-12-04
Abstract: PURPOSE: Provided is a method for making an album cover formed with a simple structure and appearance and having a window into which a photo can be inserted, by which the working process is simplified and the manufacturing cost is reduced. CONSTITUTION: The method for making an album cover having a window into which a desired photo or a printed paper for displaying the contents of the album is inserted comprises the steps of: forming an opening having a desired shape in a hardboard having an adequate thickness by a wood frame; disposing PVC cover sheets on both sides of the hardboard, the PVC cover sheets being larger than the hardboard, and heat-bonding the edges of each PVC cover sheet with a part corresponding to the inner circumference of the opening by using a first high-frequency press mold to enclose the hardboard with the PVC cover sheet and form a window-for-view conformed to the opening on the PVC cover sheet; and heat-bonding the edges of the PVC pocket sheet having a size larger than that of the window on the inner PVC cover sheet by using a second high-frequency press mold, wherein a part of the edges of the pocket sheet has an opening through which a photo or the like is introduced/removed.
Patent KR-20030051275-A (KR)
Title: Dielectric resonance element, dielectric resonator, filter, resonator device, and communication device
Inventor: MATSUURA FUMIO
IPC: H03B5/02
Filed: 2002-12-11
Abstract: PURPOSE: A dielectric resonant element, a dielectric resonator, a filter, a vibrator device and a communication device are provided to cause no problems of multi-coupling, even when a filter comprising at least a four stage resonator is formed. CONSTITUTION: A dielectric resonance element comprises a dielectric member having a first plate portion(1a) and a second plate portion(1b), the first and second plate portions(1a,1b) intersecting each other and having respective center lines(V) which are coincident with each other. The TE01 delta mode electromagnetic fields are generated in the first and second plate portions(1a,1b), respectively, such that electric field vectors are turned in respective in-plane directions of the first and second plate portions(1a,1b).
Patent KR-20040053631-A (KR)
Title: System and Method for credit card service using telephone/cellular phone numbers
Inventor: CHOI JEONG IL
Filed: 2002-12-17
Abstract: PURPOSE: A system and a method for settling a credit/debit card using a wire/wireless telephone number are provided to settle accounts using the credit/debit card by managing/matching the telephone number with the credit/debit card information and automatically confirming the CID(Caller ID) information if a customer makes an order to a credit card member shop by a telephone. CONSTITUTION: A settlement terminal(21) requests the settlement approval of the credit/debit card by automatically detecting the CID information, receiving an ordered price, and transmitting the telephone number and the ordered price. An operation center server(22) stores/manages the telephone number and the credit/debit card information of each customer(10), and transmits the approval to the settlement terminal by inquiring the credit/debit card information corresponding to the CID information if the settlement approval is requested from the settlement terminal. A credit/debit card company server(23) decides the settlement approval using the credit/debit card if the settlement approval is requested from the operation center sever, and transmits a result to the operation center server.
Patent KR-20040055256-A (KR)
Title: Waste heat recycling system of a power generator using steam turbine
Inventor: LEE JAE SEON
IPC: F01K23/10
Filed: 2002-12-20
Abstract: PURPOSE: A waste heat restoring system for a generator using a vapor turbine is provided to collect vapor to a deaerator during bypass operation of the vapor caused by the failure of the turbine or the initial driving of the turbine, thereby using the restored vapor. CONSTITUTION: A waste heat restoring system for a generator using a vapor turbine includes a waste heat restoring pipe(10) connecting a low pressure bypass pipe(220) to an auxiliary vapor supply pipe(216). The waste heat restoring pipe has a check valve(32) mounted between a part branched from the low pressure bypass pipe and a waste heat restoring control valve(30). The check valve controls the vapor flow to supply reheating vapor of a reheating vapor supply pipe(212) to a deaerator(170). An interlock check valve(34) is mounted to the waste heat restoring pipe between the waste heat restoring control valve and the check valve, and turned on/off by preset conditions.
Patent KR-20040059838-A (KR)
Inventor: CHO DAE BOK
IPC: H01L21/205
Filed: 2002-12-30
Abstract: PURPOSE: A vertical type furnace is provided to prevent the contamination of a wafer by jetting gas from a gas jet groove to the peripheral portion of a boat as the boat comes down from a process chamber. CONSTITUTION: A vertical type furnace is provided with a process tube(10) having a boat gate(11), a lift(20), a pedestal(30) on the lift, and a boat(40) on the pedestal for loading a plurality of wafers(w). The vertical type furnace further includes a gas jet groove(50) at the lower portion of the process tube, a gas flow port(60) connected with the gas jet groove, a gas supply part(70) for supplying gas to the gas flow port, a switching valve(80) between the gas supply part and the gas flow port, and a gas jet controller(90) for opening the switching valve as the boat comes down from the process chamber.
Patent KR-20040059971-A (KR)
Title: Method for fabricating capacitor in semiconductor device
Inventor: CHO GWANG JUN
IPC: H01L27/108
Filed: 2002-12-30
Abstract: PURPOSE: A method for manufacturing a capacitor of a semiconductor device is provided to restrain the formation of an interface oxide layer between a lower electrode and a dielectric film by nitrifying the surface of the lower electrode. CONSTITUTION: A capacitor insulating layer(36) is formed on a semiconductor substrate(30). A capacitor hole is formed by selectively etching the capacitor insulating layer. A lower electrode(38) is formed in the capacitor hole. The surface of the lower electrode is nitrified by using remote plasma. Then, a dielectric film and an upper electrode are sequentially formed on the lower electrode.
Patent KR-20020032532-A (KR)
Title: Method and apparatuses for planarizing microelectronic substrate assemblies
IPC: C10N20/02
Filed: 2000-07-19
Abstract: Methods and apparatuses for planarizing microelectronic substrate assemblies on fixed-abrasive polishing pads with non-abrasive lubricating planarizing solutions. One aspect of the invention is to deposit a lubricating planarizing solution without abrasive particles onto a fixed-abrasive polishing pad having a body, a planarizing surface on the body, and a plurality of abrasive particles fixedly attached to the body at the planarizing surface. The front face of a substrate assembly is pressed against the lubricating planarizing solution and at least a portion of the fixed abrasive particles on the planarizing surface of the polishing pad. At least one of the polishing pad or the substrate assembly is then moved with respect to the other to impart relative motion therebetween. As the substrate assembly moves relative to the polishing pad, regions of the front face are separated from the abrasive particles in the polishing pad by a lubricant-additive in the lubricating planarizing solution.
Patent KR-20020026955-A (KR)
Title: De-icing composition and method
IPC: C09K3/00
Filed: 2000-07-25
Abstract: A composition for reducing the buildup of snow and ice on a surface. The composition includes a sugar-water mixture combined with a steepwater solubles-water admixture.
Patent KR-20020047115-A (KR)
IPC: B01J23/08
Filed: 2000-08-11
Abstract: 본 발명은 균질하게 분산된 상태로 첨가제를 함유하는 미세-결정질 베마이트에 관한 것으로서, 적당한 첨가제로는 알칼리토금속, 알칼리금속, 희토류 금속, 전이금속, 악티늄족 원소, 실리콘, 갈륨, 붕소, 티탄 및 인의 그룹에서 선택되는 원소를 함유하는 화합물이며, 본 발명에 따른 상기 MCB는 여러가지 방법으로 제조되며, 일반적으로 미세-결정질 베마이트 전구물질 및 첨가제는 균질하게 분산된 상태로 첨가제를 함유하는 미세-결정질 베마이트로 전환되며, 또한 상기에서 제조된 미세-결정질 베마이트로 이루어진 성형된 입자 및 촉매 조성물을 청구하는 것을 특징으로 한다.
Patent KR-20020053055-A (KR)
IPC: B65H59/04
Filed: 2001-06-27
Abstract: 스풀로부터 필라멘트 재료를 풀어내는 것을 조절하는 자가보상식 장력 제어장치는 고정된 지지부와 이 고정된 지지부에 피벗된 스핀들 조립체를 포함하며, 스핀들 조립체는 필라멘트 재료의 스풀을 회전가능하게 지지한다. 필라멘트 재료에 의해 부여되는 당기는 힘은 스핀들 조립체가 각운동하게 하고 스풀을 회전시킨다. 고정된 지지부에 장착되며 스핀들 조립체에 커플링되는 제동 조립체는 스핀들 조립체의 각도에 따라 제동력을 가한다.
Patent KR-20020031418-A (KR)
IPC: A61K31/196
Filed: 2000-08-03
Abstract: 본 발명은 적어도 부분 지연된 작용을 갖는 경구 약제학적 투여 형태에 관한 것이다.  당해 투여 형태중에 함유된 약제학적 활성 물질인 트라마돌은 적어도 부분적으로는, 수 용해도가 100㎎/㎖ 이하인, 동일 반응계내에서 형성되는 화합물의 형태이다.  또한, 본 발명은 이러한 투여 형태를 제조하는 방법에 관한 것이다.
Patent KR-20020042840-A (KR)
Title: Electrostatic deposition formulations
IPC: B24D3/00
Filed: 2000-08-30
Abstract: Fine abrasive powders can be made more free-flowing and better adapted to electrostatic upward projection deposition in the production of coated abrasives by the control of the volume resistivity of the powder to a level that is not greater than 1014 ohms.cm by incorporation of a silica powder.
Patent KR-20020034202-A (KR)
IPC: A01N43/58
Filed: 2000-09-28
Abstract: 본 발명에 따르는 연마액과 함께 사용하기 위한 연마 패드는, 연마층(10), 연마층을 통과하는 개구부(16) 속의 윈도우(30), 및 연마층, 윈도우 및 개구부를 가로질러 연장되어 있으며 연마액의 누출을 차단하는 비단절 연속 차단층을 제공하며 상부에 접착제가 도포되어 연마층 및 윈도우와 함께 접합 밀봉부를 형성하는 유체 불투과층(40)을 갖는다.
Patent KR-20030009314-A (KR)
IPC: H04N5/93
Filed: 2001-08-17
Abstract: 재생 장치(1)의 오버뷰 재생 모드에서 저장될 필름의 장면들(S)을 재생하는 재생 장치(1)는, 필름 재생 시간들(TW1, TW2) 동안에 정규 재생 속도로 재생 가능한 필름의 오디오/비디오 데이터(AVD)를 저장하기 위한 랜덤 액세스 메모리 수단(8)과; 상기 재생 장치(1)의 오버뷰 재생 모드가 활성화되도록 인에이블하는 모드 수단(4)으로서, 저장된 필름(FI1, FI2)의 적어도 2개의 장면들(S1 내지 S6, S7 내지 S12)은 오버뷰 재생 모드에서 상기 재생 장치(1)에 의해 정규 또는 증가된 재생 속도로 연속적으로 재생되고, 2개의 장면들(S1 내지 S6, S7 내지 S12) 사이에 기록되고 오버뷰 재생 모드에서 재생되지 않는 스킵 재생 시간 간격들(TZ1, TZ2) 동안에 정규 재생 속도로 재생 가능한, 상기 모드 수단과; 상기 재생 장치(1)의 오버뷰 재생 모드에서, 장면 재생 시간(TS) 동안에 장면 시작 위치들(SBI)에서 장면 끝 위치들(SEI)까지 정규 재생 속도로 필름의 저장된 오디오/비디오 데이터(AVD)를 재생하는 재생 수단(9)과; 오버뷰 재생 모드에서 상기 재생 수단(9)에 의해 재생되는 저장된 필름의 장면들(S1 내지 S6, S7 내지 S12)을 자율적으로 규정하는 장면 규정 수단(14)으로서, 상기 장면 규정 수단(14)에 의해 저장된 필름에 대하여 규정되는 장면 재생 시간의 상기 장면 재생 시간들(TS)의 합계는, 상기 저장된 필름들(FI1, FI2)의 필름 재생 시간(TW1, TW2)이 서로 다른 경우에도 항상 같은 필름 오버뷰 재생 시간 간격(TU)에 대응하는, 상기 장면 규정 수단을 구비한다.
Patent KR-20020064801-A (KR)
Title: 증류 스피리트의 모든 자연 촉진된 숙성
IPC: C12G3/04
Filed: 2000-11-07
Abstract: 본 발명은 원액 또는 부분적으로 숙성된 음료를 열 및 산소 농도를 제어하고 음료 숙성용 목제품과 접촉하게 하며 밀폐 시스템에서 가공 처리하는 것인, 숙성 음료, 바람직하게는 목제품과 접촉하며 숙성되는 증류 스피리트의 제조 방법에 관한 것이다.  특정 실시양태에서, 에틸 아세테이트가 숙성 과정 전에 음료 원액에 첨가된다.
Patent KR-20020051934-A (KR)
IPC: H01L23/31
Filed: 2000-09-13
Abstract: 최상부면(117)과 바닥면(116)을 갖는 전기적 및 열적으로 전도성인 히트 싱크(100)로서 최상부면과 바닥면상에서 개방하는 관통하여 형성된 슬롯(110)을 갖는 상기 히트 싱크(100)를 포함하는 본 발명에 따른 볼 그리드 어레이와 사용하기에 적합한 패키지 기판이 개시되었다.  유전층(102)은 슬롯에 근접한 히트 싱크의 바닥면에 바람직하게는 중간 접착층없이 거기에 직접 형성된다.  회로(105)는 유전층상의 회로 패턴에 선택적으로 형성된다.  전기적 저항성 솔더마크(108)는 유전층 및 회로에 배치되고, 솔더마크는 회로의 본드 패드(106)를 노출시키는 그것을 관통하는 개구를 갖는다.  본 발명에 따른에 따른 상기와 같은 기판은 집적회로 다이가 리드-온-칩 패키지 방식으로 슬롯 위에 장착되는 것을 허용하지만, 볼 그리드 어레이를 형성하기 위해 솔더 볼(107)이 장착될 수 있는 본드 패드를 제공한다.
Patent KR-20020074151-A (KR)
Title: 경질 올레핀의 선택적 제조방법
IPC: C10G35/06
Filed: 2000-10-27
Abstract: 본 발명은 촉매, 및 촉매적 분해 또는 열분해된 나프타 스트림으로부터 경질(즉, C 2 -C 4 ) 올레핀을 선택적으로 제조하는 방법에 관한 것이다.  상기 나프타 스트림은 반응조건에서 평균공극직경 약 0.7nm 미만의 결정질 제올라이트를 약 10 내지 50중량% 함유하는 촉매와 접촉시킨다.  본 발명의 촉매는 증기 활성화를 필요로 하지 않는다.