baber/WOPTO huggingface dataset:
Patent KR-20090051980-A (KR)
Inventor: KIM HYEON SEOG
IPC: G07F9/00
Filed: 2007-11-20
Abstract: 본 발명은 우대권 발매기능 및 보충기능을 갖는 자동발매 시스템에 관한 것이다. 
     본 발명의 자동발매 시스템은, 표시부, 사용자 입력부, 지폐처리부, 동전처리부, 전원부, 중앙제어부 이외에 우대권을 발급 받으려는 희망자의 증명서를 인식하기 위한 증명서 인식부, 상기 중앙제어부의 제어에 의하여 승차권 또는 상기 우대권을 발행하는 승차권 발행부, 상기 중앙제어부의 제어에 의하여 교통카드를 발행하는 교통카드 발행부 및 상기 중앙제어부의 제어에 의하여 상기 교통카드를 충전하는 교통카드 보충부를 추가로 포함하되, 상기 중앙제어부는 상기 증명서 인식부를 통하여 인식된 상기 증명서에 존재하는 정보를 식별하여 우대권 발급 대상자임이 확인되면 상기 승차권 발행부를 통하여 상기 우대권을 발행하도록 제어하고, 발행필요금액 이상의 금전이 상기 지폐처리부 또는 상기 동전처리부를 통하여 투입되고 상기 사용자 입력부를 통하여 교통카드 발행요구 메시지 또는 승차권 발행요구 메시지가 입수되었을 때 상기 교통카드 발행부 또는 상기 승차권 발행부를 통하여 상기 교통카드 또는 상기 승차권을 발행하도록 제어하고, 충전요구액이 상기 사용자 입력부를 통하여 입력되고 상기 충전요구액 이상의 금전이 상기 지폐처리부 또는 상기 동전처리부를 통하여 투입되고 상기 교통카드를 상기 교통카드 보충부가 인식하였을 때 상기 교통카드 보충부를 통하여 상기 충전요구 금액만큼 상기 교통카드에 충전하도록 제어하는 것을 특징으로 한다. 
     본 발명에 의하면, 자동발매기 기능, 보충기 기능, 우대권 발매기능 뿐만 아니라 지폐 거스름돈 반환기능 등, 승객에게 승차할 수 있는 수단을 제공하는 동일한 목적의 모든 기능을 하나의 시스템에 집약함으로써 개별 기능을 갖는 시스템 각각을 설치하는 비용을 절감할 수 있을 뿐만 아니라 역 구내 시스템 설치공간도 줄어들어 역 구내공간의 불필요한 소요를 줄이는 효과가 있다. 
       
     우대권, 교통카드, 보충기, 지폐교환, 승차권발매
Patent KR-20080107239-A (KR)
Title: Liquid crystal display and control method of the same
Inventor: JUNG JUN HO
IPC: G02F1/133
Filed: 2007-11-27
Abstract: A liquid crystal display and a control method thereof are provided to solve the problem of image duplication or afterimage. A liquid crystal display comprises a liquid crystal shutter glass(30), a liquid crystal panel(10), a glass control unit(40), a light source(50), and a light source driving unit(60). The liquid crystal panel reciprocally indicates the right image at the predetermined scan period. The glasses controller outputs the control signal in order to open or close right and left side of the liquid crystal shutter glasses for synchronizing with the scan period. The light source driving unit supplies the driving power to the light source in order to transmit light to the liquid crystal panel. By the light source driving unit, the light is transmitted after the left image, and the right image along the scan direction.
Patent KR-20090055102-A (KR)
Title: Organic sludge drying into the liquid fuel from waste prastic and syn-gas producing method using gasification with dried sludge
Inventor: KO YONG SOO
IPC: C10G1/10
Filed: 2007-11-28
Abstract: A drying method of organic sludge and a manufacturing method of the synthetic gas are provided, which improve efficiency and reliability in the energy recovery utilization. A drying method of organic sludge and a manufacturing method of the synthetic gas comprise: a pre-treatment process(S100) which removes the foreign material including the metal etc in the waste plastic or the waste plastic film and pulverizes it; a liquefaction process(S200) which injects the waste plastic or the waste plastic film in the liquefaction apparatus, reacts it at 300~500deg.C, and generates the liquid fuel by passing it through the condensation device; a sludge drying process(S300) manufacturing the dry sludge; and a synthetic gas manufacture process(S400) which thermally decomposes the sludge dried in the sludge drying process and manufactures the synthetic gas in which the melting slag, the hydrogen and carbon monoxide are the main component.
Patent KR-20090046652-A (KR)
Inventor: KOO HYOUN HEE
IPC: H04L1/12
Filed: 2007-12-11
Abstract: 무선통신 시스템에서 ACK(Acknowledgement)/NACK(Negative Acknowledgement) 정보를 송신하는 방법을 제공한다. 상기 방법은 데이터 블록내에 ACK/NACK 정보의 포함 여부를 지시하는 내부 ACK/NACK 필드를 포함하는 메시지를 수신하는 단계 및 상기 메시지의 지시에 따라 수신한 데이터 블록의 ACK/NACK 정보를 포함하는 데이터 블록을 송신하는 단계를 포함한다. 네트워크 및/또는 이동국은 수신한 데이터 블록에 대한 ACK/NACK 정보를 별도의 메시지없이 송신할 수 있다.
Patent KR-20090062442-A (KR)
Title: Device and method of estimating frequency offset using a plurality of correlaors
Inventor: KIM KYEONG PYO
IPC: H04J11/00
Filed: 2007-12-13
Abstract: A device and a method for estimating a frequency offset are provided to estimate the frequency offset with a simple hardware structure by using a plurality of correlators. A receiver includes an analog to digital converter(110), a low pass filter, a correlation value generator(130), a frequency offset estimator(140) and a symbol detector(150). The analog to digital converter converts an analog in-phase signal and an analog quadrature signal into a digital in-phase signal and a digital quadrature signal. The correlation value generator outputs the plurality of correlation values for a training signal by using the plurality of correlators. The plurality of correlators output the maximum correlation value if the predetermined phase rotation exists. The frequency offset estimator estimates the frequency offset based on the plurality of correlation values. A symbol detector detects the symbol included in a data signal according to the estimated frequency offset.
Patent KR-20090064868-A (KR)
Title: A carrier for semiconductor package
Inventor: LEE HONG HA
IPC: H01L21/67
Filed: 2007-12-17
Abstract: A carrier for a semiconductor package is provided to improve a structure by reducing the number of parts. A carrier for a semiconductor package includes a base member, a pair of latches, a pushing member, and an elastic member. The base member(110) has a pocket(110a) in which a semiconductor package is loaded. A top end of a pair of latches(120) is rotatably installed in the base member. A bottom end of a pair of latches selectively limits movement of the semiconductor package. The pushing member(130) is installed in a top part of the base member. The elastic member is installed between the pushing member and the base member.
Patent KR-20090066474-A (KR)
Title: Gripper clamping structure of automatic tool changer arm
Inventor: CHA BO NAM
IPC: B23Q3/00
Filed: 2007-12-20
Abstract: A gripper clamping device of an automatic tool changer arm is provided to perform tool exchange work stably by clamping the machine tool after increasing the contact rate between the gripper and the machine tool. A gripper clamping device of an automatic tool changer arm exchanges a tool holder in which a tool is mounted while rotating. The gripper clamping device includes upper and lower fingers(12,13), a rotation axis pin(11), grippers(14,15), and a plate(30). The upper and lower fingers are installed at opposite sides of an arm(20). The rotation axis pin is installed on both end sides of the arm as the rotation center of the upper and lower fingers. The grippers are installed on the top center of the upper and lower fingers and advance in V-groove which is formed on the tool holder. The plate is mounted on one side of both ends of the arm and fixes the tool by making three-point contact together with the grippers when the grippers advance horizontally in the V-groove.
Patent KR-20090069005-A (KR)
Title: Bio-chip ditector within loading unit
Inventor: KIM SOO KYUNG
IPC: G01N33/53
Filed: 2007-12-24
Abstract: An apparatus for detecting a plurality of bio-chips is provided to perform detection fastly by comprising a plurality of bio-chips to a detection stage rotating at high speed, to reduce manufacturing costs, and to easily make insertion and exhaustion by fixing the bio-chip on a detection stage. An apparatus for detecting a plurality of bio-chips by projecting the light source comprises a rotary detection stage(20) loading one or more bio-chips(10). The detection stage is formed in a disk plate shape capable of high speed rotation. The apparatus further comprises one or more bio-chip loading unit on the upper side of the detection stage. The loading unit comprises a fixed supporting part(40) fixing the side of each bio-chip and a horizontal supporting part. In the fixed supporting part and horizontal supporting part, a transverse section of the side contacting the bio-chip has acute angle.
Patent KR-20090070458-A (KR)
Title: Method of forming contact hole in semiconductor device
Inventor: OH HEE SUNG
IPC: H01L21/28
Filed: 2007-12-27
Abstract: A method for forming a contact hole of a semiconductor device is provided to reduce a manufacturing cost by forming the contact hole of a critical dimension below 0.4 um without using a DUV(Deep Ultra Violet) light source. An insulating layer is deposited on a wafer(100) including a gate pattern(110). A photoresist pattern for forming a contact is formed on the insulating layer(120). A first contact hole pattern with a down slope is formed in the insulating layer by performing the etching using the photoresist pattern as an etch mask. A second contact hole pattern is formed on the wafer by performing the etching using the insulating layer with the first contact hole pattern as a hard mask. The etching is performed in the first contact hole so that the CD of the lower side of the first contact hole pattern corresponds to the CD of the second contact hole pattern. The I-line light source is used to form the photoresist pattern.
Patent KR-20090073566-A (KR)
Title: A collective fibers reinforced polymeric strip, method thereof, and a geogrid using the same
Inventor: YUN KWANG JUNG
IPC: E02D29/02
Filed: 2007-12-31
Abstract: A fiber reinforced polymer strip, a manufacturing method thereof, and geogrid using the same are provided to minimize degradation of mechanical property according to foam introduction by controlling size and the amount of micro pore of a foam. A fiber reinforced polymer strip(1) includes a matrix strip(2) consisting of a thermoplastic polymer and a fiber assembly(3) in which a plurality of fibers are arranged horizontally, and located inside the strip. The matrix strip is a foam including minute pores of which average particle diameter is 0.1 - 60 mum. The porosity of the foam is 10 - 70%. A gross cross sectional area of the fiber assembly is 10 - 80% of the fiber reinforced polymer strip whole cross-section.
Patent KR-20070020573-A (KR)
IPC: H04N21/4627
Filed: 2005-06-28
Abstract: 관리 방식에 따라 배포 및 사용되는 전송 모듈을 이용하는 방법, 장치, 및 시스템.  이 전송 모듈은 한 단말에서 다른 단말로 콘텐츠를 전송하는데 필요한 바인딩 해제 및 바인딩 동작들을 수행하도록 콘텐츠를 해독 및 재암호화 할 충분한 액세스 권리를 가진다.  관련 데이터의 백업 사본이 사용자에 의해 보유된다고 가정할 때, 그 백업 사본은 신용할 수 있는 당사자의 키를 가지고 암호화된다.  암호화된 데이터는 새 장치로 전송될 수 있다.  대응되는 해독 키가 그 신용할 수 있는 당사자로부터 새 장치로, 전송 모듈과 함께 전송된다.
Patent KR-20070052282-A (KR)
Title: Adaptor and method for converting standard tube fitting/port to push-to-connect tube fitting/port
Inventor: UDHOFER ANDREAS
IPC: F16L19/02
Filed: 2005-07-21
Abstract: An adaptor (45) for converting to a push-to-connect tube fitting/port a standard tube fitting/port body (10, 110, 210, 310, 410, 510, 610) having a threaded portion (11) for threaded attachment of a nut/plug (12), comprises a coupling nut/plug (12, 112, 212, 312, 412, 512, 612) having an axially inner threaded end portion for threaded attachment to the threaded portion (11) of the fitting/port body (10); a tube sealing member (15, 115, 215, 315, 415, 515, 615) contained within the nut/plug (12) for sealing to a tube (19) having a locking surface (22) spaced from the end of the tube (19); and a retention device (23) retained in the nut/plug (12), which nut/plug (12) has at an axially outer end thereof a central opening through which the tube (19) can be inserted into the coupling nut/plug (12), whereby the locking surface (22) can be engaged by the retention device (23) to prevent axial withdrawal of the tube (19) from the coupling nut/plug (12) once inserted; wherein sealing and retention of the tube (19) is effected within the confines of the coupling nut/plug (12) and separate from and without requiring modification of the standard tube fitting/port body (10).
Patent KR-20070031477-A (KR)
IPC: H03L7/16
Filed: 2004-09-08
Abstract: 본 발명은 록업 타임을 단축하고, 회로 면적을 억제한다.  전압 제어 발진기(17a),(17b)는 제어 전압에 의해 발진 주파수가 제어되고, 주파수(f1),(f2)의 출력 신호를 출력한다.  스위치(18)는 출력 신호를 선택 출력한다.  분주기(19)는 분주비를 전환할 수 있는 출력 신호를 분주한다.  위상 비교기(13)는 출력 신호와 출력 신호에 대응한 기준 신호와의 위상차를 출력한다.  스위치(15)는 위상차의 출력 경로를 전환한다.  LPF(16a),(16b)는 전압 제어 발진기(17a),(17b)에 대응하여 설치되고 위상차를 제어 전압으로 변환하며, 시정수가 전환된다.  컨트롤 회로(20)는 주파수(f1),(f2)의 출력 신호가 항상 출력되도록 스위치(15),(18)와 분주기(19)의 동작을 순차 전환하고, 전원 투입 후, 전체 주파수(f1),(f2)의 출력 신호가 안정적으로 출력되게 된 후, LPF(16a),(16b)의 시정수를 전환한다.
Patent KR-20070046914-A (KR)
Title: Motor vehicle handle
Inventor: SCHINDLER MIRKO
IPC: E05B17/00
Filed: 2005-05-04
Abstract: A motor vehicle door handle includes a grip area and an electronics module arranged inside the grip area. A plastic injection moulded carrier core extends inside the motor vehicle door handle. The electronics module is arranged in a recess of the carrier core. A covering layer, which is made of plastic and which forms an outer wall of the motor vehicle door handle, is injected around the carrier core and the electronics module. Preferably, the carrier core is an injection moulded part having a foam structure, produced according to a MuCell method.
Patent KR-20070055544-A (KR)
Inventor: FLYNN DANIEL P
IPC: A61J15/00
Filed: 2005-09-19
Abstract: 이산화탄소 지시기(12)를 가지는 위삽입관 배치 장치(10)가 개시된다.  이산화탄소 지시기(12)는 내부에 이산화탄소 검출기(17)가 배치된 통로(44)를 통해 실질적으로 축방향 유동을 허용하는 대항 포트(30, 32)와 연통하는 통로(44)를 형성하는 장방형 하우징(18)을 포함한다.  위삽입관(14)이 커넥터(16)의 내측에 결합된 상태로 주 포트(56)와 연통하는 제1 및 제2 다리부(52, 54)를 가지는 Y 포트 커넥터(16)가 환자의 식도를 통한 위삽입관(14)의 말단부의 삽입을 위해 제공된다.  이산화탄소 검출기(17)는, 하우징(18) 내측에 불용 공간을 최소화하도록 구성되고 시린지 또는 유사한 공기 소기 장치(50)가 장방형 하우징(18)에 결합되어 하우징(18)으로부터 공기를 흡인할 때 통로(44)를 통해 실질적으로 축방향 공기 유동을 용이하게 하는, 장방형 하우징(18) 내측에 배치된다. 
       
     위삽입관 배치 장치, 이산화탄소 지시기, 위삽입관, Y 포트 커넥터
Patent KR-20070083733-A (KR)
Title: Piping
Inventor: CARO COLIN GERALD
IPC: B01F25/64
Filed: 2005-09-21
Abstract: The present invention relates to piping (1) for use in industrial activities, where the piping (1) has a specific geometry. In particular, the piping (1) is formed as a lowamplitude helix, which causes fluid flowing through the piping (1) to swirl. This swirl flow provides a large number of advantages. Particular applications where the piping (1) can be used include petroleum production risers and flowlines, production tubing for downhole use in wells, pipelines for the transportation of fluids, static mixers, bends, junctions or the like, penstocks and draft tubes, reactors for chemical, petrochemical, and pharmaceutical applications, heat exchangers, cold boxes, incinerators and furnaces for waste disposal, static separators, and air intakes.
Patent KR-20070060151-A (KR)
Title: Microdischarge devices with encapsulated electrodes and method of making
Inventor: EDEN J GARY
IPC: H01J17/04
Filed: 2005-10-04
Abstract: An embodiment of the invention is a microdischarge device including a first electrode (230) encapsulated in a dielectric, which may be a nanoporous dielectric film. A second electrode (240) is provided which may also be encapsulated with a dielectric. The electrodes are configured to ignite a discharge in a microcavity when a time-varying (an AC, RF, bipolar or a pulsed DC, etc.) potential is applied between the electrodes. In specific embodiments of the invention, the second electrode may be a screen covering the microcavity opening and the microcavity may be closed at one end. In some embodiments of the invention, the second electrode may be in direct contact with the first electrode. In other embodiments, a gap separates the electrodes. In a preferred method of manufacturing microdischarge devices with encapsulated electrodes, a metal substrate is used to form a nanoporous dielectric encapsulated electrode and dissolve a portion of the dielectric layer. The dielectric layer is then anodized a second time, resulting in a nanoporous dielectric encapsulated electrode with improved regularity of the nanoscale dielectric structures. In some embodiments of the invention, the columnar voids in the dielectric may be backfilled with one or more materials to further tailor the properties of the dielectric.
Patent KR-20070112759-A (KR)
Title: Method and device for descaling a metal strip
Inventor: BEHRENS HOLGER
IPC: B21B45/06
Filed: 2006-03-16
Abstract: The invention relates to a method and a device for descaling a metal strip (1), especially a hot-rolled strip consisting of normal steel or a cold-rolled or hot-rolled strip consisting of austenitic or ferritic stainless steel. According to said method, the metal strip (1) is guided in a transport direction (R) through at least one plasma descaling device (2, 3) in which it is subjected to a plasma descaling process. The aim of the invention is to improve the production of one such metal strip. To this end, the metal strip (1) is subjected to a regulated cooling process in a cooling device (4, 5) following the plasma descaling process in the at least one plasma descaling device (2, 3), in such a way that it has a defined temperature downstream of the cooling device (4, 5). The invention also relates to a method, according to which the strip is provided with a coating consisting of a coating metal, using the heat produced by the plasma descaling process, following the same.
Patent KR-20070068449-A (KR)
Title: Recovered high strength multi-layer aluminum brazing sheet products
Inventor: KILMER RAYMOND J
IPC: C22F1/04
Filed: 2005-10-13
Abstract: A metallurgical product consists essentially of a core aluminum alloy, purposefully tailored through chemistry and processing route to resist recrystallization during the brazing cycle to intentionally exploit the higher strengths immediately after brazing of a deformed and recovered microstructure, the core aluminum alloy being bonded on one side to an aluminum alloy interliner designed to be resistant to localized ero sion, which, in turn, is bonded to a 4xxx cladding alloy.
Patent KR-20070072588-A (KR)
Title: Amorphous and polymorphic forms of telmisartan sodium
Inventor: WIZEL SHLOMIT
IPC: C07D235/20
Filed: 2005-11-03
Abstract: Provided is the amorphous form of telmisartan sodium and the preparation thereof. Also provided are the telmisartan sodium polymorph crystal Forms 0 to XIII and XV to XX and preparations thereof. Also provided are pharmaceutical composition of amorphous and polymorphic forms of telmisartan sodium or mixtures thereof, and methods of treatment of a mammal in need thereof.
Patent KR-20070091276-A (KR)
Title: Highly scratch-resistant and highly elastic coating agents based on alkoxysilane-functional components
Inventor: POPPE ANDREAS
IPC: C09D133/10
Filed: 2005-09-03
Abstract: The invention relates to thermally curing coating agents which comprise (A) at least 50 % by weight, based on the content in nonvolatile substances in the coating agent, of (A1) 0 to 50 % by weight, based on the total of components (A1) and (A2), of a polymethacrylate copolymer which comprises more than 50 % by weight, based on the total of comonomers in copolymer (A1), of a radically polymerizable, ethylenically unsaturated compounds (a1) having at least one reactive group of formula (I)-X-SiR"x(OR')3-x (I), and (A2) 50 to 100 % by weight, based on the total of components (A1) and (A2), of an adduct from polyisocyanate and alkoxysilane, whereby (A2) contains at least one reactive group of formula (II):-NR-C(O)-N-(X-SiR"x(OR')3-x)n(X'-SiR"y(OR')3-y)m (II), (B) a catalyst for cross-linking the-Si(OR')3-x units, and (C) an aprotic solvent or a mixture of aprotic solvents.
Patent KR-20070086446-A (KR)
Title: Nanofabrication based on sam growth
Inventor: BURDINSKI DIRK
IPC: H01L21/027
Filed: 2005-12-14
Abstract: The present invention relates to a process of nano fabrication based on nucleated SAM growth, to patterned substrates prepared thereby, to a nano wire or grid of nanowires prepared thereby and to electronic devices including the same. In particular, there is provided a process which comprises applying a first SAM-forming molecular species to a first surface region of the substrate surface, so as to provide a first SAM defining a scaffold pattern on the first surface region; and applying a second SAM-forming molecular species to at least a second surface region of said substrate surface which is not covered by the first SAM, whereby a second replica SAM comprising the second SAM-forming molecular species selectively forms on substrate surface adjacent to at least one edge of said first SAM.
Patent KR-20070086759-A (KR)
Title: Ac sensing for resistive memory
Inventor: VOSHELL THOMAS W
IPC: G11C11/16
Filed: 2004-10-06
Abstract: Alternating current is used to sense a logic state of a memory cell that has a resistive memory element. The memory element can be in an array and a memory device can include the array and peripheral circuitry for reading or sensing each memory cell in the array. The peripheral circuitry can include a clock/control circuit providing a control signal, which controls when a row of memory cells are sensed, a switching circuit for receiving a cellplate count signal and a bit count signal provided by the clock/control circuit, a cellplate line signal and a bit line signal from the memory cell, the switching circuit producing a first output signal and a second output signal, wherein one of the first output signal and the second output signal is at a supply voltage and the other of the first output signal and the second output signal alternates polarity with each sensing operation and a comparison circuit receiving the first output signal and the second output signal and outputting a signal corresponding to the logic sate of the memory cell.
Patent KR-20070086940-A (KR)
Title: Wireless communication method and apparatus for adaptively biasing channel quality indicators to maintain a desired block error rate
Inventor: PIETRASKI PHILIP J
IPC: H04L27/02
Filed: 2005-10-25
Abstract: A method and apparatus for adaptively biasing a channel quality indicator (CQI) used for setting a configuration of communication between a transmitter and a receiver in a wireless communication system. The receiver sends a CQI and positive acknowledgement (ACK)/negative acknowledgement (NACK) messages to the transmitter. The ACK/NACK messages indicate the absence or presence of error, respectively, in a transmitted data packet. The CQI is derived from the signal-to-interference ratio (SIR) and the ACK/NACK messages. The transmitter calculates the block error rate (BLER) of the transmitted data packets based upon the ACK/NACK messages sent from the receiver. The transmitter compares the BLER of the transmitted data packets to a target BLER and biases the CQI based on the comparison in order to achieve the target BLER.
Patent KR-20070091206-A (KR)
Title: Magnetic fluid sealing unit for semiconductor wafer vertical heat treating apparatus
Inventor: SHIMAZAKI YASUYUKI
IPC: F27D99/00
Filed: 2005-12-19
Abstract: An outer shell member (60) arranged from a lower part onto an outer circumference of a unit main body (30) is fixed on a lower end of a rotating shaft (20). A space between the rotating shaft (20) and the unit main body (30) is magnetically sealed by a magnetic fluid sealing section (40). A shaft bearing section (70) is provided at a lower end part of the unit main body (30) between the unit main body (30) and the outer shell member (60). Further, at a position closer to a reactor vessel than the magnetic fluid sealing section (40) in the vicinity of the magnetic fluid sealing section (40), a space between the rotating shaft (20) and the unit main body (30) is supplied with a purge gas.
Patent KR-20070108178-A (KR)
Title: Process for producing synthetic quartz glass, jig for synthetic-quartz-glass production, and synthetic quartz glass for optical member
Inventor: HINO KEIGO
IPC: C03B8/04
Filed: 2006-02-17
Abstract: An object of the invention is to provide a process for producing a synthetic quartz glass while taking account of a refractive index distribution remaining in the synthetic quartz glass; a jig for use in the synthetic-quartz-glass production process; and a synthetic quartz glass for an optical member, produced by the process. A process for producing a synthetic quartz glass, which comprises: depositing and growing fine quartz glass particles synthesized by flame hydrolysis of a glass-forming material on a rotating target to thereby form a porous quartz glass base of a substantially cylindrical shape; presintering the porous quartz glass base (1); and heating the presintered porous quartz glass base to a temperature not lower than the vitrification temperature to convert the base into a transparent glass, wherein in the step of conversion into a transparent glass, the porous quartz glass base is placed so as to make its growth axis vertical and a load (13, 14) is vertically imposed on the thus-placed porous quartz glass base.