baber/WOPTO huggingface dataset:
Patent KR-20000039597-A (KR)
Title: Method for preventing fouling in slurry synthetic process
Inventor: OH JAE SEUNG
IPC: C08F2/02
Filed: 1998-12-15
Abstract: PURPOSE: A method for preventing fouling in a slurry synthetic process is provided which is able to efficiently prevent the fouling by throwing a specific fouling preventing agent in the process of the slurry synthetic process producing olefin monomer. CONSTITUTION: In preparing a single polymer or a copolymer of an olefin monomer in a reactor by a slurry synthetic process using a metallocene supported catalyst, a fouling preventing agent of the following formula 1 of R¬1-N{(R¬2O)nH}2, where R¬1 is either alkyl or alkenyl radical having 4-25 carbon atoms; R¬2 is diradical having 1-4 carbon atoms; and n is an integer of 1-5, is added in an amount of 0.1-3,000 parts per million to a weight of a polymerizing medium to prevent the fouling of an inside wall of the reactor.
Patent KR-20000039776-A (KR)
Title: Apparatus for photographing images
Inventor: MUN BEOM JIN
IPC: G06F3/03
Filed: 1998-12-16
Abstract: PURPOSE: An apparatus for photographing images is provided to generate video signals for the images of a pictured object by using non-visible rays and by making a line reading period shorter. CONSTITUTION: An apparatus for photographing images comprises a sensitive array panel, a formatter, and a reader. Many light sensing cells are arranged in the sensitive array panel as matrix forms. The formatter formats picture element signals of the sensitive array panel to video signals. The reader sequentially samples the picture element signals one line by one line. The reader sequentially transmits the sampled picture element signals to the formatter. The reader comprises a first sampler(52A) and a second sampler(52B). The first sampler samples uneven numbers of the picture element signals. The second alternately driven with the first sampler samples even numbers of the picture element signals. Reference picture element signals(RPS) and sensitive picture element signals(SPS) are sampled for sensed cells on an uneven number line by the first/the second samplers. The RPS and the SPS are sampled for the sensed cells on an even number line by a third sampler(52C) and a fourth sampler(52D).
Patent KR-19990063180-A (KR)
Title: 피드 포워드 증폭기
IPC: H03F1/32
Filed: 1998-12-18
Abstract: 본 발명은 피드 포워드 회로 및 상기 피드 포워드 회로의 주 회로 경로에서 지연 시간을 증가시키지 않고 자체 증폭기에 의해 상기 피드 포워드의 출력 신호에 부가된 왜곡을 감소시키기 위한 방법에 관한 것이다.  이것은 프리-디스토션 회로를 이용하여 프리-디스토션 신호를 수정 증폭기의 입력 신호에 유입시키므로서 달성된다.  상기 프리-디스토션 신호는 상기 수정 증폭기에 의해 유입되는 왜곡 신호를 소거하는데 사용된다.  상기 프리-디스토션 신호는 상기 왜곡 신호와 거의 동일한 주파수 및 진폭을 가진다.  그러나, 상기 프리-디스토션 신호는 상기 왜곡 신호에 대하여 대략 180°의 위상차를 가지며, 따라서 상기 프리-디스토션 신호와 상기 왜곡 신호는 결합될 때 서로 상쇄된다.
Patent KR-19990063238-A (KR)
Title: 적층된 커패시터내의 확산을 최소화하기 위해 실리콘플러그상에 형성된 장치 및 방법
IPC: H01L21/02
Filed: 1998-12-19
Abstract: 본 발명은 적층된 커패시터 구조물을 제조하는 장치와 방법에 관한 것이고, 이러한 적층된 커패시터 구조물은 배리어층을 포함한다.  본 발명의 일 특징에 따르면, 집적 회로내 확산을 감소시키기 위한 방법은 기판 상부에 게이트 산화물을 형성하는 단계 및 게이트 산화물층의 일부상에 실리콘 플러그를 형성하는 단계를 포함한다.  다음으로 실리콘 이산화물층이 게이트 산화물층 상부에 형성되고 실리콘 플러그 주위에 배치된다.  제 1 배리어 박막이 실리콘 플러그 상부에 형성되고, 유전체층이 실리콘 이산화물층 상부에 형성된다.  일실시예에서, 제 1 배리어 박막을 형성하는 단계는 실리콘 플러그 상부에 제 1 산화물층을 형성하는 단계, 제 1 산화물층을 질화시키는 단계 및 질화된 제 1 산화물층을 에칭하는 단계를 포함한다.
Patent KR-20000041550-A (KR)
Title: Alignment layer structure of vertical alignment mode liquid crystal display device and method for manufacturing the same
Inventor: KIM CHEOL HA
IPC: G02F1/1337
Filed: 1998-12-23
Abstract: PURPOSE: An alignment layer structure of a vertical alignment mode liquid crystal display device and a method for manufacturing the same are provided to prevent liquid crystal molecule from colliding with adjacent molecules. CONSTITUTION: An alignment layer structure of a vertical alignment mode liquid crystal display device includes a substrate(10), a first vertical alignment layer(12), and a second vertical alignment layer(14). The substrate(10) includes a pixel region(pix) which is confined for a plurality of pixels. The first vertical alignment layer(12) is formed on the upper surface of the substrate in a region corresponding to the regions of the plurality of pixels. The second vertical alignment layer(14) is formed on the upper surface of the substrate on a region corresponding to the region surrounding the region for the plurality of pixels. The second vertical alignment layer is further formed on the first vertical alignment layer.
Patent KR-20000042492-A (KR)
Title: Data input circuit of semiconductor memory device
Inventor: OH HAK JUN
IPC: H01L27/10
Filed: 1998-12-24
Abstract: PURPOSE: A data input circuit of a semiconductor memory device is provided to latch internal data exactly by introducing a delay conversion circuit using operation frequency information at an input device. CONSTITUTION: A data input circuit of a semiconductor memory device comprises an input buffer(10) which buffers input data(DQ) from the exterior. A frequency sensing part(16) senses an operation frequency of an external main clock(CCLK) to generate a decoding output signal(F(n)). An internal clock generating part(14) receives the main clock(CCLK) and a data strobe clock(DCLK) to output an internal data strobe clock(IDCLK). A frequency control delay part(18) selectively controls a delay time of the buffered output signal(DIN) in response to the decoding output signal(F(n)), and generates a conversion delay output signal(DIN_D). A data latch part(12) latches the conversion delay output signal(DIN_D) in synchronization with the internal data strobe clock(IDCLK).
Patent KR-20000043031-A (KR)
Title: Method for fabricating cylindrical capacitor of semiconductor device
Inventor: HAN MIN SEOP
IPC: H01L27/108
Filed: 1998-12-28
Abstract: PURPOSE: A method for fabricating a cylindrical capacitor of a semiconductor device is provided to make the capacitance uniform. CONSTITUTION: A method for fabricating a cylindrical capacitor of a semiconductor device comprises forming an insulating layer(22) and contact holes therein, forming a poly-silicon layer(23), forming a photoresist pattern(24) on a region for forming a capacitor, depositing a relux material(25) around the photoresist pattern(24), forming a cross-link material(25) and the relux material which is not reacted with the photoresist by selective baking or exposure, removing the polysilicon layer(23) at outside of a cylinder and the cross-link material(25) on baked or exposed photoresist pattern(26), removing the photoresist pattern(26), removing the polysilicon layer(23) at inside of the cylinder, and removing the crosslink material(25).
Patent KR-20000044026-A (KR)
Title: Control apparatus for gas turbine engine and control method thereof
Inventor: RYU SEOK JOO
IPC: F01D17/00
Filed: 1998-12-29
Abstract: PURPOSE: A control apparatus for gas turbine engine is provided to achieve a synthetic function of starting-up of the engine, charging of a battery, prevention against an overspeed of the engine, and checking an abnormity of the engine by a simplified configuration. CONSTITUTION: A control apparatus in a gas turbine engine which is started by a discharge current of a battery and generates a voltage using a rotatory force of the engine, the control apparatus comprising a startup/generator motor having functions of both startup motor and direct current generator, a switching unit for electrically connecting the battery and the startup/generator motor, a speed sensing unit for sensing a rotational speed of the gas turbine engine, and a control unit for starting the gas turbine engine, charging the battery, determining the state of the gas turbine engine from the rotational speed of the engine so as to prevent an overspeed of the engine, and controlling the switching unit according to the determination.
Patent KR-20000045115-A (KR)
Title: Radio interface unit of wideband-wireless local loop system for increasing subscribers
Inventor: LEE DONG GEOL
IPC: H04W28/02
Filed: 1998-12-30
Abstract: PURPOSE: A radio interface unit(RIU) of a wideband-wireless local loop(W-WLL) system is provided to increase telephone subscribers in one traffic channel, by adopting a sound processing system by a 16Kbps low delay-code excited linear prediction(LD-CELP) in the RIU of the W-WLL system. CONSTITUTION: A wideband-wireless local loop(W-WLL) system comprises a radio interface unit(RIU), a base station, a base station controller, and an exchange. The RIU wirelessly links with the base station. The base station connected to a telephone office with a wire wirelessly links with the RIU. The RIU of the W-WLL system comprises an analog to digital(A/D)/digital to analog(D/A) converter(10), a modem(20), a controller(30), a time switch(40), a low delay-code excited linear prediction(LD-CELP) unit(50), a clock generator(60), a Combo unit(70), and a SLIC unit(80). The time switch switches digital data decoded in the modem into time slots selected by the Combo unit. The time switch switches digital data inputted through an E1 line into the time slots, and outputs the time slots to the modem. The LD-CELP unit demodulates 16Kbps data inputted by being switched from the time switch to 64Kbps pulse code modulation(PCM) data. The LD-CELP unit modulates the inputted 64Kbps PCM data to the 16Kbps data, and outputs the 16Kbps data to the time switch. The clock generator generates frame synchronous clocks to the Combo unit, and enables corresponding time slots for transmitting/receiving data. The Combo unit composed of 9 combos converts the demodulated 64Kbps PCM data into analog signals, or converts the inputted analog signals into the 64Kbps PCM data. The Combo unit outputs the converted 64Kbps PCM data to the LD-CELP unit. The SLIC unit composed of 9 SLICs applies an impedance matching process to the converted analog signals to output the analog signals to a subscriber. The SLIC unit applies an impedance matching process to analog signals output from the subscriber, and outputs the analog signals to the Combo unit.
Patent KR-20000046503-A (KR)
Title: Apparatus for improving concentration of study in television with brain wave control capability and method thereof
Inventor: LEE DONG HA
IPC: H04N5/44
Filed: 1998-12-31
Abstract: PURPOSE: An apparatus for improving concentration of study in television with a brain wave control capability and a method thereof are provided to display message corresponding to various brain waves. CONSTITUTION: An apparatus for improving concentration of study in television with a brain wave control capability includes a brain data storage(15), a brain sound processor(16), an audio synthesis/amplifier(8A), a transmitter(22), an image brain data storage(17), an image brain data processor(7), and an image synthesizer(21). The brain data storage(15) stores audio data corresponding to each brain wave frequency. The brain sound processor(16) processes audio data corresponding each of the brain wave frequency. The audio synthesis/amplifier(8A) deals with the output of the processor(16). The transmitter(22) outputs the brain wave sound data to a wireless headphone. The image brain data storage(17) stores image brain wave data. The operation of the image brain data processor(7) and the image synthesizer(21) are similar to those of corresponding devices for audio signals.
Patent KR-19990063603-A (KR)
Title: 가변형 이젝터 냉각 노즐
IPC: F02K1/36
Filed: 1996-09-20
Abstract: 항공기 가스 터빈 엔진 배출 노즐(14)의 발산 부분(48)내의 고온 배출 가스 흐름(4)을 한정하는 종방향으로 연장하고 그리고 원주방향으로 인접한 발산 배출 흐름 형성 요소(54, 55)를 선택적으로 냉각시키며, 선대칭 방향전환 노즐(14)내의 발산 플랩(54) 및 시일(55)을 위한 피봇운동을 제공하기 위한 노즐 냉각 시스템(2)이다.  이 장치는 적어도 하나의 배출 유동 형성 요소(일반적으로, 플랩 및 시일이라 불리움)의 축방향으로 인접한 전방 및 후방 부분(49F, 49A), 각기 전방 및 후방 내부 고온 표면(47F, 47A)을 갖는 인접한 전방 및 후방 부분, 후방 부분을 적어도 2개의 위치중 하나인 전방 부분에 장착하기 위한 장착 장치(56)를 포함한다.  이러한 2개의 위치중 제 1 위치는 섹션사이에 갭(106)을 형성하도록 섹션을 이격시켜 냉각 공기(102)가 후방 내부 고온 표면상으로 유동하도록 하며, 이러한 2개 위치중 제 2 위치는 냉각 공기가 후방 내부 고온 표면상으로 유동하는 것을 근본적으로 차단하도록 폐쇄 근접 관계로 섹션을 위치시킨다.
Patent KR-19990067193-A (KR)
Title: 루테늄 촉매의 활성 회복 방법
IPC: C07C5/11
Filed: 1996-10-18
Abstract: 불포화 유기 화합물의 수소화에의 사용으로 활성이 감소된 루테늄 촉매를 액체상에서 산소와 접촉시키는 단계, 및 수소화에서보다 낮은 수소 분압과 수소화 온도보다 50 ℃ 낮은 온도 이상의 온도에서 촉매를 유지하는 단계로 이루어진, 루테늄 촉매의 활성 회복 방법.
Patent KR-19990067592-A (KR)
Title: 메탈로프로테아제 억제제로서의 신규한 마크로사이클릭 화합물
Filed: 1996-11-13
Abstract: 본 발명은 아그레카나제를 포함하는 메탈로프로테이나제를 억제하는 마크로사이클릭 분자, 및 종양 괴사 인자(TNF)의 제조에 관한 것이다.  특히 본 발명의 화합물은 조직 분해에 수반된 메탈로프로테이나제의 억제제 및 종양 괴사 인자의 방출 억제제이다.  본 발명은 또한 그러한 화합물을 포함하는 제약 조성물, 및 염증성 질병 치료를 위해 상기 화합물을 사용하는 방법에 관한 것이다.
Patent KR-19990072181-A (KR)
Title: 공작기계의 변위보정장치
IPC: G05B19/404
Filed: 1997-01-08
Abstract: 현시점을 기준으로 하여 과거의 각 시간범위에 있어서의 주축회전수의 함수값의 이력을 이력테이블(22D)에 기억함과 동시에, 이 이력데이터 테이블(22D)의 기억위치에 관련시켜 보정계수를 보정계수 테이블(22C)에 미리 기억한다. 보정계수 테이블(22C)로부터 각 기억위치와 보정계수를 읽어냄과 동시에, 이력데이터 테이블(22D)로부터 상기 기억장치에 이력데이터 테이블(22D)로부터 상기 기억위치에 대응하는 주축회전수의 함수값을 읽어내어, 각 기억장치에 있어서의 함수값과 보정계수와의 각 곱의 총합으로부터 보정값을 산출하여, 이 보정값으로 NC 지령위치를 보정한다.
Patent KR-19990082667-A (KR)
IPC: C08F110/02
Filed: 1997-02-19
Abstract: Polymerizable alkanes are prepared by gas-phase polymerization in the presence of catalyst systems by a process in which the catalyst systems used are supported castalyst systems.
Patent KR-20000005186-A (KR)
Title: Antenna assembly for radiotelephonic device
Inventor: EPPERSON DARRELL
IPC: H04B1/38
Filed: 1997-04-01
Abstract: PURPOSE: An antenna assembly, and an associated method, facilitates communication of a radio telephone operable in a satellite communication system, such as a satellite cellular communication system. CONSTITUTION: A patch antenna (78 and 86) is rotatably coupled to a radio telephonic housing (42) of the radio telephone (10). The patch antenna (78) exhibits circular polarization characteristics, best to detect and to transmit communication signals to a satellite-based transceiver. By positioning patch antennas (78, 86) at opposing sides of the radio telephone, down-link signals transmitted to the radio telephone are detectable irrespective of the orientation of the radio telephone.
Patent KR-20000065184-A (KR)
IPC: A61K8/46
Filed: 1997-04-25
Abstract: Disclosed are topical skin care compositions which comprise from about 0.1 % to about 20 % by weight of a cationic surfactant, from about 0.1 % to about 20 % by weight of an anionic surfactant, from about 0.001 % to about 20 % by weight of a skin active agent, from about 40 % to about 99 % by weight of water, and dispersed surfactant complex formed prior to or during formulation of the composition, which complex comprises from about 25 % to about 100 % of the cationic surfactant of the composition and from about 25 % to about 100 % of the anionic surfactant of the composition. The skin care compositions are useful for clarifying the skin and reducing pore size, while providing improved deposition or efficacy of skin active agents onto the surface of the skin, milder cleansing of the skin, and improved skin feel benefits.
Patent KR-20000015823-A (KR)
Title: Extrudable thermoplastic elastomeric urea-extended polyurethane
Inventor: SLAGEL EDWIN C
IPC: C08G18/75
Filed: 1997-05-20
Abstract: PURPOSE: The polyurethane has high-temperature-resistance and is thus extrudable at high temperatures when it contains diamine mixture. CONSTITUTION: An extrudable urea-extended thermoplastic polyurethane elastomer is formed from at least one aliphatic diisocyanate, at least one polyester glycol of polyether glycol, and diamine curing agent. At least one second diamine curing agent and/or at least one extrusion processing aid may be included. The polyurethane is also strong and durable. The polyurethane can be liquid-cast, injection-molded, transfer-molded, sprayed, and extruded without changing either the chemistry or stoichiometry of the polyurethane. The polyurethane may be used for making vehicle air bags or other any application for thermoplastic urethanes which requires increased thermal stability.
Patent KR-20000050604-A (KR)
Inventor: PARK YEON SOO
IPC: F16K31/64
Filed: 1999-01-07
Abstract: PURPOSE: A constitution of faucet opened/closed by magnetic force and water supplying/intercepting device and manufacturing method thereof is provided to easily use a faucet, save water, diminish manufacturing cost, regularly supply/intercept water and automatically supply/intercept water according to humidity or atmosphere temperature. CONSTITUTION: A constitution of faucet opened/closed by magnetic force and watersupplying/intercepting device is as follows. A water ejecting pipe(11) of a faucet(2) is screwed with a bolt pipe(12). A connecting line(10) connected to a grasp(16) of a valve(15) is connected to a lever(4). A permanent magnet(5) is fixed on lower end of the lever(4). A supporting pipe(20), a spring(21) and a valve(22) having a grasp(24) are gradually mounted and a supporting panel(27) fitted with an o-ring(23) into a circular protrusion(26) is inserted in a neck turned pipe(19). A water ejecting pipe(31) is inserted into the neck turned pipe(19) fitted with an o-ring(28). An upper end(29) of a lever(30) is contacted under the grasp(24). A nonmagnetic material pipe(48) has a grasp of a valve having permanent magnet on a grasp thereof, a water supplying pipe screwed on upper end thereof. A permanent magnet is fixed on a shaft supporter formed on upper surface of the nonmagnetic material pipe(48).
Patent KR-20000051149-A (KR)
Title: Scroll compressor
Inventor: JANG YOUNG IL
IPC: F04C18/02
Filed: 1999-01-19
Abstract: PURPOSE: A scroll compressor is provided to simplify a structure to uniformly maintain a pressure of an intermediate pressure chamber for providing a back pressure to a rotation scroll and prevent excessive friction between fixing and rotation scrolls. CONSTITUTION: A scroll compressor, includes a rotation scroll(53) and a fixing scroll(51) engaged together for forming a plurality of compression chamber, a main frame(55) formed below the rotation scroll, an intermediate pressure chamber(61) for providing a predetermined size of back pressure to the rotation scroll to remove an axial gap formed between the scrolls, a communication channel(65) formed between the scrolls for communicating with a suction chamber(63) and the intermediate pressure chamber, and an opening and closing element(67) mounted on the communication channel for opening the communication channel to maintain the back pressure of the intermediate pressure chamber by introducing a pressure of the intermediate pressure chamber to the suction chamber when a pressure difference between the chambers is larger than a predetermined value.
Patent KR-20000055345-A (KR)
Inventor: IM JAE HUN
IPC: F25D29/00
Filed: 1999-02-05
Abstract: PURPOSE: A device and a method for controlling a compressor of a refrigerator are provided to decrease vibration caused by the operation of a compressor. CONSTITUTION: A DC motor(511) is operated and vibration by the action of a compressor is detected through a vibration sensor(25). When it is decided that the detected vibration value is less than a reference vibration value, a common cooling operation is performed by rotating the DC motor at 3600RPM as the established rotation number. When it is decided that the detected vibration value is more than the reference vibration value, the DC motor is rotated by increasing the established rotation number by a certain degree.
Patent KR-20000056180-A (KR)
Inventor: PARK CHANG SU
IPC: H04W52/04
Filed: 1999-02-13
Abstract: PURPOSE: An apparatus of controlling power for handoffs of frequencies in a code division multiple access(CDMA) communication system is provided to reduce interferences caused by an excessive transmission power, by controlling a regular power in a frame section including a transmission-intercepting section when the handoffs are performed between the frequencies. CONSTITUTION: An apparatus of controlling power for handoffs of frequencies in a base station of a code division multiple access(CDMA) communication system, comprises a power control command generator, a channel transmitter, a power control processor(114), gain controllers(100), and a radio frequency(RF) transmitter. The power control command generator compares a terminal signal with a preset power control reference value, and generates a power control command. The power control command generator changes the power control reference value to generate a power control command, when a frame having a transmission-intercepting section is received. The channel transmitter generates transmitting frame data and includes the power control commands. The power control processor decides a frame transmission power including the transmission-intercepting section for the handoffs. The gain controller controls a transmission power of a signal output from the channel transmitter by the decided transmission power. The RF transmitter modulates a gain-controlled signal into a transmission frequency to transmit the frequency.
Patent KR-20000056261-A (KR)
Inventor: HWANG CHER WON
IPC: A01N25/34
Filed: 1999-02-18
Abstract: PURPOSE: An agricultural chemical preparation is an antifungus non-poisonous pesticide against Botrytis cinerea causing gray mould rot. CONSTITUTION: A agricultural chemical preparation is extracted from the juice of Korean Raphanus sativius, which is subjected to centrifugal separation and freeze drying. The preparation is used as an antifungus non-poisonous pesticide against Candida and Botrytis cinerea causing gray mould rot, without causing damages on the human body in relation with acidification of the soil. The biological pesticide prevents accumulation of the residual chemicals in the human body and contributes to the preservation of the ecosystem.
Patent KR-19990045940-A (KR)
Title: 전자빔을이용한이산화탄소의제거방법
Filed: 1999-02-24
Abstract: 본 발명은 전자빔을 이용한 이산화탄소의 제거방법에 관한 것으로, 그 목적은 화석연료를 주연료로 사용하는 대형 빌딩이나 산업시설의 보일러 또는 대규모 소각시설로부터 발생되는 배연가스중에 포함된  CO 2 가스를 대기로 배출되기 전단계에서 보다 효과적으로 제거함과 동시에 부산물로서 유용한 성분인 요소를 합성시킬 수 있도록 한 것이다. 
     본 발명은 보일러 또는 소각로로부터 배출된 CO 2 가스를 포함하는 배연가스를 스프레이 쿨러(Spray Cooler)내에서 냉각 및 가습시키는 전처리 단계와; 전처리된 배연가스를 중화제인 20∼30%농도의 액상 NH 3 와 함께 반응기내로 유입시키는 단계와; 반응기내로 유입된 배연가스에 0.5∼1.5Mev, 5∼20mA 에너지조건의 전자빔을 상온에서 일정 시간동안 조사(照射)하는 단계와; 조사된 전자빔에 의하여 배연가스내에 함유된 N 2, O 2, H 2 O 등의 성분이 활성화되면서 라디칼이 생성되고, CO 2 가스는 중화제인 NH 3 와 반응되어 요소가 합성되는 요소합성단계와; 합성된 요소를 포집하는 단계와; 포집된 요소를 그래뉼레이터(Granulator)로써 사용가능한 비료로 전환시키는 단계로 이루어진다. 
     본 발명을 적용하면, 재래식 배기가스 처리방법에 비하여 공정이 단순하고, 관리운영 및 조작이 용이하며, 설치면적의 감소로 인하여 경비가 절감된다. 
     또한, CO 2 가스의 처리와 함께 실용자원화 물질인 요소의 생산이 가능하고, CO 2 가스의 처리를 위한 별도의 폐수처리시설이 불필요하며, 설비수명이 길고 기타 소모품의 빈번한 교체가 불필요하게 된다. 
     또한, CO 2 가스를 유용한 물질인 요소로 전환시킬 수 있기 때문에 산업경쟁력이 강화되는 것은 물론, CO 2 가스 배출권 거래, 청정기술의 이전 및 플랜트수출을 통하여 국가산업발전에 커다란 기여를 할 수 있다. 
     또한, 이와 같은 본 발명을 적용하면 위에서 언급한 경제적인 효과 이외에도  도시형 연료유로부터 나오는 배기가스로 인한 대기오염문제가 현저하게 개선되기 때문에 삶의 질이 향상되며, 청정기술의 개발에 따라 환경에 대한 일반 대중의 인식도를 앙양시키게 되고, 유류사용 보일러나 소각로 설치에 대한 부정적인 인식을 근본적으로 변화시킬 수 있게 된다.
Patent KR-20000060011-A (KR)
Inventor: YANG JOON HO
IPC: C04B35/71
Filed: 1999-03-10
Abstract: PURPOSE: A plastic working method for changing an elvan stone block to a ceramic block is provided to enhance a production yield and a thermal stability of a ceramic block. CONSTITUTION: A stone's part having no crack is cut, an elvan stone block having a predetermined size is prepared, The elvan stone block is dried at 40-50°C for 6-7 hours. Then, the elvan stone block is heated at 150-200°C for 2 hours, a coupling moisture is removed. After that, the elvan stone block is heated at 400-500°C for 1 hour, thereby removing a thermal soluble material. The elvan stone block is thermal-processed at 1300°C for 1 hour. Then, the elvan stone block is gradually cooled for 12 hours, thereby obtaining an inventive ceramic block.