baber/WOPTO huggingface dataset:
Patent KR-20020023779-A (KR)
Inventor: KIM KI HO
IPC: B01D53/32
Filed: 2001-12-17
Abstract: PURPOSE: A manufacturing method of plasma generator is provided, which can remove particulate matter and smog contained in emission gas of diesel vehicles. The reaction and filtration efficiencies are improved by using as main raw material ceramic elements of BaTiO3, PbTiO3, SrTiO3, CaTiO3, PbZrO3. CONSTITUTION: The plasma generator comprises assembly of molded unit frames made of two parallel plates of positive dielectrics(a10) and negative dielectrics(a20), the two dielectrics being connected by supporters(a30) giving spaces(a40) of 0.5-10 mm between two dielectrics(a50,a60). The outer frame of molded unit frame has two projections(a90) for further assembling of unit frames to give spaces, and in the dielectrics(a10,a20) electrodes of plus(a50) and minus(a60) can be inserted.
Patent KR-20030051915-A (KR)
Title: WLL terminal having a billing function and controlling method therefore
Inventor: LEE JAE GWON
IPC: H04M17/00
Filed: 2001-12-20
Abstract: PURPOSE: A WLL(Wireless Local Loop) terminal including a charging function and a method for controlling the same are provided to receive metering pulse data according to incoming calls to calculate charging information, and to display calculated information on an LCD(Liquid Crystal Display), thereby performing a pay phone function through the integrated WLL terminal without installing an additional pay phone. CONSTITUTION: An RF(Radio Frequency) module(2) processes communication signals including metering pulse data received from an antenna(1) to RF signals. A modem(3) demodulates RF signals inputted from the RF module(2), or modulates signals transmitted from an external. A CPU(5) controls a pay phone function by using the metering pulse data, and controls functions of a WLL terminal(4) on the whole. A charging information generator(6) calculates charging information, such as charges for use and a total conversation time, according to a metering pulse data control signal of the CPU(5). An LCD(7) displays processed information of the WLL terminal(4) including the charging information calculated by the charging information generator(6). A memory(8) sequentially stores the charging information calculated by the charging information generator(6) according to a charging information storage control signal of the CPU(5). A codec(9) connected to the modem(3) processes voice signals. And a keypad(10) connected to the CPU(5) sets up dialing signals.
Patent KR-20030054403-A (KR)
Title: Device for collecting shot ball in descaler
Inventor: CHOI MUN HWAN
IPC: B24B9/00
Filed: 2001-12-24
Abstract: PURPOSE: A device for retrieving a shot ball of a descaler is provided to entirely suck and retrieve the shot ball passing through the descaler by installing the device at the rear of the descaler. CONSTITUTION: A removing unit removes a shot ball and scale from the surface of a strip, and has a support frame(11) and a frame structure(10) installed at the upper and lower end of the strip respectively, brush rolls installed at the support frame and frame structure and brushing the surface of the strip, and a driving motor installed at the frame structure and rotating the brush roll. A vibrating unit vibrates the strip and assists the removing unit in removing the scale, and has an uneven roll(30). A retrieving unit has a suction frame, a suction tube(41), and a suction pump, and sucks and retrieves the shot ball and scale.
Patent KR-20030055511-A (KR)
Title: A method for the preparation of a solid catalyst for alpha olefin polymerization
Inventor: JANG HO SIK
IPC: C08F4/654
Filed: 2001-12-26
Abstract: PURPOSE: A method for preparing a solid catalyst for the polymerization of an α-olefin is provided, to prepare the solid catalyst whose particle size is controlled more easily and which has a large bulk density and a uniform particle shape. CONSTITUTION: The method comprises the steps of dissolving a magnesium halide compound to a solvent mixture comprising cyclic ether, at least one kind of alcohol and a hydrocarbon solvent; reacting the magnesium compound solution with a metal halide compound to prepare a carrier; and reacting the carrier with a titanium compound and an electron donor to support titanium into the carrier. The ratio of the metal halide compound to the alcohol and to the total oxygen-containing solvent is 0.5-0.7 : 1 by mol and 0.24-0.5 : 1 by mol, respectively. Preferably the cyclic ether is tetrahydrofuran or 2-methyl tetrahydrofuran; and the alcohol is an alcohol of C1-C3 and an alcohol of C4-C20.
Patent KR-20030056663-A (KR)
Inventor: HAN CHANG HUN
IPC: H01L27/112
Filed: 2001-12-28
Abstract: PURPOSE: A method for manufacturing a flat cell mask ROM(Read Only Memory) is provided to be capable of reducing cost by simplifying manufacturing processes, and improving the reliability and the degree of integration by simultaneously forming patterns for a buried N+ junction region and an isolation region. CONSTITUTION: After sequentially depositing the first oxide layer(220), a nitride layer(230), and an anti-reflective coating(240) made of the second oxide layer on a silicon substrate(210), a mask(255) is formed on the resultant structure for forming patterns for a trench and a buried N+ junction region. Then, the patterns for a trench and a buried N+ junction region are formed by carrying out an etching process at the resultant structure using the mask. Then, the buried N+ junction region and the trench are formed by using the patterns.
Patent KR-20030056897-A (KR)
Title: Method for fabricating wave guide
Inventor: JUNG I SEON
IPC: H01P11/00
Filed: 2001-12-28
Abstract: PURPOSE: A wave guide making method is provided to be capable of removing scattered reflection of light by removing roughness of a surface due to a surface tension. CONSTITUTION: A mesa structure which consists of a mask layer pattern, a cladding layer pattern and a silicon germanium film pattern is formed by selectively removing a silicon germanium film(23), a cladding film(25) and a mask layer(27,29) on a silicon substrate. A high-temperature annealing process is performed with respect to the mesa structure. The silicon germanium film is formed to have a thickness of 50 to 10000 angstroms under a pressure of 10 mtorr to 200 torr at a temperature of 650-1200°C. A gas used to form the silicon germanium film is one selected from a group of DCS, H2, GeH4 and HCl. The high-temperature annealing process is performed during 10 to 600 seconds under the conditions of 700 to 1200°C and 10 to 500 torr.
Patent KR-20030057707-A (KR)
Title: Method for fabricating image sensor
Inventor: KO HO SUN
IPC: H01L27/146
Filed: 2001-12-29
Abstract: PURPOSE: A method for manufacturing an image sensor is provided to be capable of preventing the cross-talk between unit pixels. CONSTITUTION: A semiconductor layer(22) is formed on a semiconductor substrate(21). A trench is formed by selectively etching the semiconductor layer(22) until the depth as the diffusion distance of the substrate(21). A field oxide layer(28) is filled entirely into the trench, wherein the field oxide layer(28) is an oxide layer by CVD(Chemical Vapor Deposition) or an SOG(Spin On Glass). A unit pixel is then formed in the semiconductor layer(22).
Patent KR-20030059404-A (KR)
Title: Method of manufacturing cleaning solution for semiconductor device
Inventor: CHOI GEUN MIN
IPC: H01L21/304
Filed: 2001-12-29
Abstract: PURPOSE: A method for manufacturing a cleaning solution of a semiconductor device is provided to be capable of reducing manufacturing costs by forming simultaneously an acidic oxidation water and an alkaline deoxidation water by using a single electrolyte equipment. CONSTITUTION: An electrolyte equipment composed of an anode cell(30), a cathode cell(10) and a half cell(20), is prepared. UPW(Ultra Pure Water) is added to the anode cell(30) and the cathode cell(10), and NH4Cl as an electrolyte is added to the half cell(20). By performing electrolysis processing, an acidic oxidation water and an alkaline deoxidation water are simultaneously generated at the anode cell(30) and the cathode cell(10), respectively.
Patent KR-20030058711-A (KR)
Title: Mobile-phone using medical diagnoses system and method thereof
Inventor: JANG YONG SU
IPC: H04W4/00
Filed: 2001-12-31
Abstract: PURPOSE: A medical diagnosis system and method using a mobile communication terminal are provided to allow a user to check a physical health by transmitting blood pressure or pulse data sensed by a diagnosis device to a terminal and to a hospital server and transmitting a data analysis result of a doctor to the terminal. CONSTITUTION: A mobile terminal performs a function(S101). In order to switch the mobile terminal to a diagnosis mode(S102), a user of the mobile terminal inputs a diagnosis key(S103) and then inputs a diagnosis start key(S104). The terminal generates a diagnosis start signal and transfers it to a diagnosis device(S105). The diagnosis device performs a diagnosis operation on the body of the user(S106) and wirelessly transmits a diagnosis result to the terminal(S107). Upon receiving the diagnosis result(S108), the terminal transmits it to a provider server(S109). When the provider server receives the diagnosis result, a provider analyzes the diagnosis result data(S110). The provider server transmits an analysis result to the terminal(S111). The terminal receives and displays the analysis result(S112).
Patent KR-20030058758-A (KR)
Inventor: KIM JIN GYU
IPC: G02F1/133
Filed: 2001-12-31
Abstract: PURPOSE: A liquid crystal display is provided to reduce gate line resistance by arranging second gate lines connected with ends of gate lines to be parallel with the gate lines, thereby reducing gate signal delay generated pixels formed at the ends of the gate lines. CONSTITUTION: M gate lines(GL) are provided. N data lines(DL) are provided. M x n pixels are defined by the gate lines and the data lines and are arranged in matrix type. Storage capacitors(Cst) are overlapped with the gate lines. Second gate lines(GL') are connected with final points of the gate lines applying signals to n line of pixels. Thin film transistors(20) are formed at crossing parts of the gate lines and the data lines. Each thin film transistor is formed of a gate electrode(21) drawn from the gate line, a source electrode(23) drawn from the data line, and a drain electrode(27) connected with a pixel electrode(25).
Patent KR-20010053633-A (KR)
IPC: C12N15/09
Filed: 1999-08-05
Abstract: The present invention relates, in general, to urate oxidase (uricase) proteins and nucleic acid molecules encoding same. In particular, the invention relates to uricase proteins which are particularly useful as, for example, intermediates for making improved modified uricase proteins with reduced immunogenicity and increased bioavailability.
Patent KR-20010072431-A (KR)
IPC: C08L81/06
Filed: 1999-08-12
Abstract: A method for lateral chain modification of aryl main chain polymers with aromatic ketones or aldehydes containing tertiary basic N-groups is described. The modification can be accomplished via addition of an aromatic carboxylic acid or an acid derivative containing a tertiary amine moiety to a metallized polymer. The tertiary amines on the modified polymer can be converted to quaternary amines with halogen alkanes. Modification of the aryl main chain polymers with aromatic groups containing sulphonic acid radicals is also described. The polymers formed can be crosslinked and prepared for use in a wide variety of membrane technologies including ion exchange, dialysis, reverse osmosis, nanofiltration.
Patent KR-20010072433-A (KR)
Title: 차체의 하부 보호제 또는 밀봉제용 분무성 분말 조성물
IPC: C09K3/10
Filed: 1999-08-03
Abstract: 본 발명은 극성 및 작용성 기를 갖는 중합체를 기재로 하고, 하부 보호용 또는 밀봉제용으로 사용되는 분무성 분말 조성물의 제조에 적합한 분말성 열가소성 중합체 조성물에 관한 것이다. 
     또한, 상기 조성물은 본질적으로 물, 휘발성 유기 용매 및/또는 액체 가소제를 함유하지 않고, 공지 분말 코팅 기술을 사용하여 코팅 또는 밀봉될 기체(基體) 상에 침적된다.   상기 조성물은 하부 보호제로서 또는 밀봉제로서 자동차 구제에 사용된다.
Patent KR-20020002458-A (KR)
IPC: H04N5/00
Filed: 1996-04-25
Abstract: 통신 매체의 전파 지연을 식별자를 이용하여 표시함으로써, 대역의 취득에 관한 수속을 간략화하는 것을 목적으로 한다. 
     제 2 송신 장치(814)의 대역 취득 수단(809)은, 제 1 송신 장치(806)의 송신을 정지시킨 후, 제 1 송신 장치(806)로부터 판독된 전파 지연 식별자(804)와 최대 송신 데이터량(805)을 사용함으로써, 제 1 송신 장치(806)가 사용하고 있던 대역을 구하고, 이 대역을 사용하여 송신을 개시하는 구성으로서, 송신 장치를 전환한 경우에 대역의 반환과 재취득을 수반하지 않기 때문에 필요한 수속을 간략화할 수 있다.  또한, 전파 지연 식별자를 사용함으로써 대역의 유효한 이용이 가능하게 된다.
Patent KR-20010082301-A (KR)
Title: Odor-neutralizing and liquid-absorbing trash bags
IPC: B65F7/00
Filed: 1999-11-16
Abstract: A bag or other flexible container for the disposal of food wastes and scraps contains inside an absorbent material on which is deposited an odor-neutralizing composition. Solid and liquid food wastes are placed inside the bag, which is then sealed and placed in a home trash receptacle.
Patent KR-20010101234-A (KR)
IPC: C07C17/38
Filed: 1999-12-16
Abstract: 하이드로플로오로알칸/플루오르화수소 혼합물을 최소한 하나의 하이드로플루오로알칸의 염소화 또는 클로로플루오르화 전구물질과 반응시켜서하는, 최소한 하나의 하이드로플루오로알칸과 플로오르화 수소를 함유하는 혼합물의 분리방법. 촉매반응단계와 조합하여, 이러한 분리를 이루는 하이드로플루오로알칸의 제조방법. 공비 조성물
Patent KR-20010101977-A (KR)
IPC: C03B8/00
Filed: 2000-01-11
Abstract: 내부표면, 외부표면 또는 내부표면과 외부표면상에 텅스텐 도핑층을 가진 석영도가니를 제조하는 방법을 개시한다.     도가니의 1개 이상의 표면을 증기 텅스텐 소스에 노출시켜 텅스텐을 도가니 표면내부로 어닐링시키고, 결정인상공정에 사용시 버블없는 층과 유사하게 작용하는 텅스텐 도핑층을 생성한다.
Patent KR-20010102513-A (KR)
IPC: H04L7/04
Filed: 2000-03-03
Abstract: 본 발명은 하나이상의 상보적인 시퀀스, 예를 들어 Golay 시퀀스 쌍을 사용하여 무선 송수신기간의 정확하고 효율적인 동기화를 제공하는 것이다. 상보적인 시퀀스 쌍에 대응하는 정합 필터는 수신된 신호를 상보적인 시퀀스 쌍중 하나와 상관시키기 위하여 사용된다. 피크 출력은 정합 필터로부터 검출되고 검출된 피크는 송수신기들간의 전송을 동기화하기 위한 타이밍 추정값을 발생시키기 위하여 사용된다. 각각의 상보적인 시퀀스는 자신의 모든 비제로 지연을 위한 최소 비주기 자동상관 사이드로브 값 및 자신의 제로 지연을 위한 최대 자동상관 메인로브 값을 갖는다. 하나의 시퀀스는 랜덤 액세스 채널을 통해서 이동국에 의해 기지국으로 전송되는 랜덤 액세스 메시지의 프리앰블 부분으로서 사용될 수 있다. 이 시퀀스는  또한 동기화 채널을 통해서 기지국에 의해 전송되고 동기화를 얻기 위하여 이동국에 의해 사용되는 동기화 코드로서 사용될 수 있다. 단일 시퀀스 및 한 세트의 직교 시퀀스와 각각 상관시키는 효율적인 Golay 상관기 및 일군의 효율적인 Golay 상관기가 서술된다.
Patent KR-20010113761-A (KR)
IPC: H04N1/00
Filed: 2000-12-22
Abstract: 프린트될 기록매체의 제 1 적층(2) 및 스캔될 기록매체의 제 2 적층(5)이 삽입되고 제 1 적층을 유지하기 위한 홀더 수단(25)을 가지고 있고 인출 수단(50)쪽으로 제 1 적층(2)을 가압하기 위한 하중-가압 수단(56), 하중-가압 수단(56)을 이동시키기 위한 작동 수단(63), 및 스캔될 기록매체(11)를 가이드하기 위한 가이드 수단을 가진 장치(1)에 있어서, 하중-가압 수단(56)을 이동시키기 위한 작동 수단(63)은 또한 스캔될 기록매체(11)를 가이드 하기 위한 가이드 수단으로서 구성되어 있다.
Patent KR-20020013536-A (KR)
Title: Process for producing alfa-olefin polymers
IPC: C08F210/06
Filed: 2000-05-04
Abstract: The present invention relates to a process for polymerizing alpha-olefins in at least two stages, the first stage comprising at least one bulk reactor and optionally at least one gas phase reactor for forming the alpha-olefin polymer matrix and the second stage comprising at least one additional gas phase reactor for copolymerization of ethylene with said polymer matrix. In the second stage an antifouling composition is fed into said gas phase reactor(s) for preventing fouling in the second stage.
Patent KR-20010114273-A (KR)
Title: 이치환 이미노헤테로고리형 화합물
IPC: A61P25/28
Filed: 2001-03-21
Abstract: 화학식 I 의 이치환 이미노헤테로고리형 화합물, 또는 그의 약제학적으로 허용가능한 염을 제공한다. 
     [화학식 I] 
     
       
     
     [식 중, 
     A 는 임의 치환 알킬기; 임의 치환 아릴기; 또는 임의 치환 헤테로고리기이고; 
     X 는 산소 원자; 황 원자; 탄소 원자; 또는 질소 원자이고; 
     -X-Y- 기는 임의 치환 알킬렌 또는 고리형 알킬렌 결합을 나타내고; 
     B 1 및 B 2 는 수소 원자, 임의 치환 알킬기, 임의 치환 아릴기 또는 임의 치환 헤테로고리기이고, 서로 독립적이다].   이러한 화합물은 α4 β2 니코틴성 아세틸콜린 수용체에 대한 양호한 친화성을 나타내고, 그를 활성화시킴에 의해 뇌 기능장애에 대한 예방 또는 치료 작용을 나타낸다.
Patent KR-20030059969-A (KR)
Inventor: LEE BYOUNG BAE
IPC: B03D3/00
Filed: 2002-01-04
Abstract: PURPOSE: Provided is a mineral selector by specific gravity which is based on specific gravity of the mineral to be sort out to sink the mineral with high specific gravity and rise the mineral with low specific gravity so that it raises selection efficiency. CONSTITUTION: The mineral selection method by specific gravity is characterized by the steps of: (i) pouring minerals into a water passage(1) as the size of particles; (ii) using pressure of a nozzle(17) to let particles(11) with low specific gravity risen, collected at a water tank(14) and released outside through a releasing screw(12); and (iii) allowing particles(18) with high specific gravity to be lowered, passed between the pipes and collected at a collection tank(5), with connecting the nozzle.
Patent KR-20030060607-A (KR)
Title: The Method of Character Arrangement in The Keyboard for PDA
Inventor: LEE JAE HEON
IPC: H04M1/23
Filed: 2002-01-10
Abstract: PURPOSE: A system for arraying characters of a keypad in a PDA(Personal Digital Assistant) is provided to configure 35 character keys, and to array characters in the 35 keys, thereby magnifying portability as having all functions of a computer keyboard. CONSTITUTION: For English keys, 26 English alphabets are put in a left-handed English unit(110) and a right-handed English unit(120). A total number of 15 keys are assigned with characters in order, up to the first to the fifth column of the third row, the first to the fifth column of the second row, and the first to the fifth column of the first row in the left-handed English unit(110). 11 keys are sequentially assigned with characters in the second and the fifth column of the sixth row, the second to the fifth column of the fifth row, and the second to the sixth column of the fourth row in the right-handed English unit(120). A rest ',' of symbol keys is assigned in the sixth column of the fifth row, overlapping with a period '.'. Number keys are arrayed as follows. '1, 2, 3' are assigned in the third to the fifth column of the first row. '4, 5, 6' are assigned in the third to the fifth column of the second row. '7, 8, 9' are assigned in the third to the fifth column of the third row. '0' is assigned in the fourth column of the fourth row.
Patent KR-20020033652-A (KR)
Title: Interchangeable cover of ink cartridge
Inventor: BAE YUN SIK
IPC: B41J2/175
Filed: 2002-01-17
Abstract: PURPOSE: A compatible cover for ink cartridge is provided to achieve improved productivity and user convenience by allowing users to use reproduced ink cartridges regardless of the manufacturer and model type. CONSTITUTION: A compatible cover(100) comprises a cover plate(110) coupled onto a housing of an ink cartridge; a lower mount(120) protruded from the upper surface of the cover plate; an upper mount(130) protruded upward from the upper surface of the lower mount; a pair of ribs(140) extended from the upper surface of the cover plate and which support the side surface of the upper mount; an air hole(150) formed at the upper surface of the cover plate; and a stopper groove(160) formed at an end of the cover plate and coupled with a stopper protrusion formed at an upper end of the housing of the ink cartridge.
Patent KR-20030064197-A (KR)
Inventor: SON SIL KYU
IPC: F01M11/12
Filed: 2002-01-23
Abstract: PURPOSE: A level alarm device is provided to reduce the size of the level switch and allow for ease of manufacture, while preventing an erroneous operation of the alarm device. CONSTITUTION: A level alarm device comprises a buoyancy difference float(10) having a larger buoyancy moment for the larger gravity moment and a smaller buoyancy moment for the smaller gravity moment, centering from a float rotating shaft(13); the float rotating shaft serving as a center shaft for the rotation of the buoyancy difference float; a support(40) for supporting the float rotating shaft; a buoyancy difference level switch constituted by an electrical contact which is electrified in accordance with the rotation of the buoyancy difference float; an electronic unit for sensing and outputting signals output from the buoyancy difference level switch; and an alarm lamp for permitting a driver to recognize the signal output from the electronic unit.
Patent KR-20020026896-A (KR)
Inventor: HWANG JAE RYONG
IPC: C12G3/04
Filed: 2002-02-08
Abstract: PURPOSE: A diluted soju using reverse osmosis-treated water and its producing method are provided, therefore the aging time of soju can be decreased because the molecular binding between ethanol particles and reverse osmosis-treated water is increased, and the taste of the diluted soju can be more soft. CONSTITUTION: The diluted soju using reverse osmosis-treated water is produced by mixing neutral ethanol having 80 to 95 alcohol degree and/or grain ethanol with a specified amount of reverse osmosis-treated water to dilute the ethanol up to 30 to 40 alcohol degree; adding activated carbon into the mixture of ethanol and reverse osmosis-treated water to remove nasty smell and taste from the mixture; adding a small amount of a sweetener into the mixture; and storing, maturing and filtering the mixture, in which the volume ratio of reverse osmosis-treated water to neutral ethanol and/or grain ethanol is 5:1 to 1:1.
Patent KR-20030068641-A (KR)
Title: A door lock
Inventor: KIM GYEONG HAN
IPC: E05B53/00
Filed: 2002-02-15
Abstract: PURPOSE: A door lock system for entrance is provided to operate automatically or manually the door lock system by improving a structure of an existing door lock system. CONSTITUTION: A door lock system includes a motor(M), a locking portion(9), and a latch(3) in order to lock the locking portion and the latch by means of the motor. A driving gear(10) is connected to the motor by using a driving shaft. A bevel gear(12) connected to the driving gear is combined with a switching portion(20). An operating pin(26) is projected from a rotary disc(25). An operating groove(19) is formed on one side of the locking portion. The operating pin of the rotary disc is guided to the operating groove by the rotational motion of the switching portion. The locking portion and the latch are locked by guiding the operating pin of the rotary disc to the operating groove.
Patent KR-20030068808-A (KR)
Title: Control method for a washing machine
Inventor: KIM HYEON SUK
IPC: D06F23/04
Filed: 2002-02-18
Abstract: PURPOSE: A control method of a washing machine is provided to improve washing efficiency, to restrict the laundry from being entangled and to withdraw the laundry conveniently by vibrating a washboard and rotating a dehydrating tub alternately. CONSTITUTION: The laundry and detergent are put into a dehydrating tub, and a driving motor is stopped after finishing detecting the weight of the laundry according to measurement time(S101-S102). Washing water is supplied to a water tub by opening a feed valve(S103), and the dehydrating tub is rotated at low speed by rotating the driving motor(S104). Water supply is decided corresponding to the water level(S105), and the dehydrating tub is stopped in finishing feeding water(S106). Wobbling is performed by vibrating a washboard up and down, and water and detergent are circulated up by pumping(S107). The dehydrating tub is rotated with rotating the washboard, and the laundry, water and detergent are circulated by pumping(S108). A control unit decides the end of washing by a timer, and drains water through a drain hose by opening a drain valve(S109-S110). The control unit decides the end of drainage according to the water level, and keeps the leveling position of the washboard in finishing draining(S111-S112). Washing efficiency is improved, and creases are reduced by vibrating the washboard and rotating the dehydrating tub alternately.
Patent KR-20030068861-A (KR)
Title: White phosphor
Inventor: JUN DEOK YEONG
IPC: C09K11/66
Filed: 2002-02-18
Abstract: PURPOSE: A white fluorescent substance is provided, which can exhibit white color by single phase, is environmental-friendly, is free from discoloration and has an excellent emission luminance. CONSTITUTION: The white fluorescent substance comprises an oxide body represented by ABO3; and 0.2-5.0 mol% of a rare earth element as an activator, wherein A is an alkaline-earth metal, and B is at least one element selected from the group consisting of Sn, Si and Ti. Preferably the alkaline-earth metal is selected from the group consisting of Mg, Ca, Sr and Ba; the rare earth element is selected from the group consisting of Ce, Eu, Tb, Er, Gd, Pr and Dy. Preferably the white fluorescent substance is selected from the group consisting of MgSnO3:Pr, MgSiO3:Pr, MgTiO3:Pr, CaSnO3:Pr, CaSiO3:Pr, CaTiO3:Pr, SrSnO3:Pr, SrSiO3:Pr, SrTiO3:Pr and BaSiO3:Pr.