baber/WOPTO huggingface dataset:
Patent KR-20030046684-A (KR)
Title: device for driving liquid crystal device
Inventor: MUN SEUNG HWAN
IPC: G02F1/133
Filed: 2001-12-06
Abstract: PURPOSE: A liquid crystal display driving system is provided to vary gradation voltage according to a variation in surrounding temperature to obtain uniform gradation characteristic even if the temperature changes. CONSTITUTION: A liquid crystal display driving system includes a scan driver(2), a data driver(3), and a gradation voltage generator(6). The scan driver provides a gate voltage to gate lines of a liquid crystal display(1). The data driver supplies a corresponding gradation voltage to data lines of the liquid crystal display according to a data signal. The gradation voltage generator generates multiple gradation voltages to provide the gradation voltages to the data driver. The gradation voltage varies according to the surrounding temperature.
Patent KR-20030048735-A (KR)
Title: A disposal method of food garbage drainage
Inventor: NA KYUNG WOOK
IPC: C02F9/00
Filed: 2001-12-13
Abstract: PURPOSE: A disposal method of food garbage drainage is provided to prevent the environmental contamination by treating the leachate as the second rate water standard, save the treatment period to 5 days and the treatment cost. CONSTITUTION: The disposal method of food garbage drainage comprises a process which makes floc with coagulant by controlling pH, a dehydration process which separates floc and wastewater, a process which removes dissolved solids from the water through electrolysis basin, a process which removes deposit from the water by gravity difference, a process which makes floc with alkalinity, a process which removes floating matter from water with fine bubble floating device, a process which removes foam from the water by spraying the water.
Patent KR-20030050834-A (KR)
Title: Current power generating system installed in cassion
Inventor: CHO CHEOL HUI
IPC: F03B13/12
Filed: 2001-12-19
Abstract: PURPOSE: An oceanic current power generation system installed in a breakwater is provided to reduce the cost for installing an oceanic current power generation system, to use the kinetic energy and potential energy as an energy resource, and to easily install, repair, and maintain a generator module. CONSTITUTION: A tunnel(52) is penetrated through a breakwater(51) to incline downwardly from the ocean toward the land. Hatches(53,53') are installed in the front and rear ends of the tunnel to cut off an ocean current. A generator module(60) is installed in the lower end face of the rear portion of the tunnel. A main electricity collector(61) stores the electricity generated from the generator module.
Patent KR-20030052066-A (KR)
Title: Anti-dandruff hair-care cosmetic composition containing willow extract
Inventor: KIM JI WON
IPC: A61Q5/02
Filed: 2001-12-20
Abstract: PURPOSE: A hair cosmetic composition containing an extract of Salix(for example, S. koreensis Anderss, S. nigra, S. fragilis and S. alba) as an active ingredient. The salix extract has an excellent antimicrobial activity against Pityrosporum ovale and causes no adverse effect on the skin. Therefore it can be effectively used in the prevention of dandruff. CONSTITUTION: A cosmetic composition contains 0.1 to 10% by weight of an extract of Salix and additionally 0.001 to 1% by weight of any one selected from the group consisting of zinc pyrithione, piroctone olamine and a mixture thereof, based on the total dried weight of the composition. The extract of Salix is obtained by extraction in a solvent with a cooling condenser for 3hr, filtration with a filter paper of 100 meshes, concentration at 60deg.C under reduced pressure and freeze-drying. The solvent is selected from the group consisting of water, C1-4 anhydrous or hydrous lower alcohol and a mixture thereof.
Patent KR-20030052152-A (KR)
Title: Display assembly for refrigerator
Inventor: KIM MYEONG GUK
IPC: F25D23/00
Filed: 2001-12-20
Abstract: PURPOSE: A display assembly of a refrigerator is provided to reduce the number of parts and improve productivity in the assembly process by simplified combining structure. CONSTITUTION: A display assembly of a refrigerator includes a frame(12) fixed to a door of the refrigerator, and a display unit(16). The frame has an opening(12a) formed in the front and plural combining hooks(14a,14b,14c) protruded backward. The display unit is installed in the rear of the opening, and the display unit displays predetermined refrigerator information. The display unit has plural combining holes(16a,16b,16c) combined with the combining hooks of the frame.
Patent KR-20030052421-A (KR)
Title: Supplementary equipment for measurement and improvement of strip flatness in skin pass mill
Inventor: JUNG JE SUK
IPC: B21B37/48
Filed: 2001-12-21
Abstract: PURPOSE: A supplementary apparatus for measuring and improving a strip profile is provided to correct the strip profile by using an auxiliary roll installed at the very front portion of a skin pass mill. CONSTITUTION: A supplementary apparatus includes a correction roll(10), a fixing roll(11), a shape meter(12), a reverse-bending measuring section(13), and a plurality of auxiliary rolls(8). The correction roll(10) is movably installed at a lower portion of a threading strip(7). The fixing roll(11) is spaced from the correction roll(10) in order to press an upper end of the threading strip(7). The shape meter(12) measures a shape of the threading strip(7) in a non-contact manner. The reverse-bending measuring section(13) installed at an upper portion of the threading strip(7) so as to adjust a movement of the correction roll(10) by measuring a lengthwise reverse-bending of the threading strip(7). The auxiliary rolls(8) are installed at a lower portion of the threading strip(7).
Patent KR-20030052599-A (KR)
Title: A method for setting dynamically inter-processor communication path information in atm switch
Inventor: JE DONG GUK
IPC: H04L12/50
Filed: 2001-12-21
Abstract: PURPOSE: A method for dynamically setting IPC(Inter-Processor Communication) path information in an ATM exchange is provided to dynamically set the IPC path information, thereby setting necessary information when activating individual processors and device controllers and changing the IPC path information if forms of the processors or the device controllers are changed. CONSTITUTION: If an operation maintenance processor receives form information from an operation workstation(31), an ATM exchange extracts communication path information(32), and transmits the extracted communication path information to all processors mounted on a system(33). If a response to the path information transmission is received from a processor and device controller(34), the operation maintenance processor changes a path state(35), and reports changed path state information to the operation workstation(36). The operation maintenance processor unlimitedly repeats the path information transmission by a timer, and always stands by a path setup response and the form information.
Patent KR-20030053840-A (KR)
Title: Sevral light using method for iris recognition of pc
Inventor: CHAE JANG JIN
IPC: G06K9/00
Filed: 2001-12-24
Abstract: PURPOSE: A method for using many illuminations of an iris recognition system for a PC is provided to use many illuminations by applying an algorithm for controlling a restricted power in an iris recognition system for the PC using a USB having a restricted current and voltage. CONSTITUTION: If a user accesses to an iris recognition system, a recognition distance between an eye of the user and a camera is measured by a distance measuring sensor(S401). If the distance between an eye of the user and a camera is capable of being measured, an illumination control unit applies a trigger signal to one illumination, a charging unit receives a charged illumination, and the illumination is weakened(S402). If the illumination is weakened, an area of an iris only is extracted(S403). It is judged whether an SR(Specular Reflection) exists in the extracted iris area(S404). If the SR does not exist in the extracted iris area, the trigger signal of the illumination control unit is applied, a power is received from the charging unit, and the illumination is brightened(S405). When the illumination is brightened, an iris image is extracted by the camera(S406). If the SR exists in the extracted iris area in the above stage(S404), the illumination of other position is lighted, and an iris image of no reflection state is extracted(S407).
Patent KR-20020023850-A (KR)
Inventor: LEE JONG BUM
IPC: F25B39/04
Filed: 2001-12-24
Abstract: PURPOSE: A radiating fin for refrigerator condenser and method for coupling radiating fins is provided to achieve an improved heat efficiency by attaching radiating fins with increased radiating surface, to the refrigerator condenser. CONSTITUTION: A radiating fin(10) shaped as a square has a plurality of holes(20) with a burring portion(30) and a slitting portion(40). The burring portion is tampered, and has an inlet portion with an inner diameter larger than the outer diameter of a refrigerant pipe. The burring portion has an outlet portion with an inner diameter smaller than the outer diameter of the refrigerant pipe. The slitting portion is formed at the side surface of the burring portion. A method for coupling radiating fins and a refrigerant pipe, comprises the steps of arranging the radiating fins in a single row, and rotating and inserting the refrigerant pipe to the hole formed at the radiating fin, in such a manner that the refrigerant pipe tightly contacts the burring portion formed at the hole.
Patent KR-20030056014-A (KR)
Title: Method for manufacturing storage node electrode of semiconductor device
Inventor: JUNG JUNG TAEK
IPC: H01L27/108
Filed: 2001-12-27
Abstract: PURPOSE: A method for manufacturing a storage node of a semiconductor memory device is provided to be capable of preventing the decrease of yield due to etching residues by carrying out a spin wet etching process by using chemical mixed with fluoric acid, nitric acid and TMAH. CONSTITUTION: A sacrificial layer(36) is formed at the upper portion of a semiconductor substrate(10) for defining a pattern region of a storage node. A plurality of opening portions are formed at a memory cell region(100) by selectively etching the sacrificial layer. A conductive layer(46) is deposited on the entire surface of the resultant structure. The conductive layer formed at a peripheral region(200) is removed by using a spin wet etching process in which chemical mixed with fluoric acid, nitric acid and TMAH are used.
Patent KR-20030056763-A (KR)
Title: An aquarium
Inventor: NAM SEUNG WAN
IPC: A01K63/00
Filed: 2001-12-28
Abstract: PURPOSE: An aquarium, where several sandbags full of sand and pebbles are laid out on the bottom and a mesh, to which sand is attached, is covered on the sandbags in order to be seen to be full of sand in the aquarium, is provided to be cleaned easily by taking out the mesh and sandbags from the aquarium. CONSTITUTION: The aquarium includes sandbags which hold sand(22), laid out on the bottom of the aquarium, and which allows water to go in and out; a mesh(20), a flexible material with latticed pattern, which is installed to cover the sandbags and the surface of which is attached to sand by an adhesive in order for the aquarium(100) to be seen to be full of sand; and an adhesive is silicone.
Patent KR-20010083083-A (KR)
IPC: C07D307/12
Filed: 1999-07-02
Abstract: 본 발명은 특히, 약제학적 활성 화합물인 2-(4-플루오로페녹시메틸)-5-(4-N-하이드록시우레이딜-1-부티닐)-테트라하이드로푸란 및 그의 전구체를 제조하는 방법을 포함한다.
Patent KR-20010079503-A (KR)
IPC: A61P25/08
Filed: 1999-07-02
Abstract: 본 발명은 신경 세포 사멸(변성) 및 신경변성 질환의 치료 방법에 관한 것이다.  본 발명의 방법은 졸중 또는 최상성 뇌 손상 또는 신경변성 질병에 걸린 환자와 같은 하기 치료를 요하는 환자에게 유효량의 GDF-1 단독 또는 뉴로트로핀-3 과 배합하여 투여함을 포함한다.
Patent KR-20010075522-A (KR)
IPC: G02F1/13363
Filed: 1999-07-22
Abstract: 필름과 평행한 제1 방향으로는 제1 열 팽창 계수를, 필름과 평행한 제2 방향으로는 제2 열 팽창 계수를 갖는 프레임에 의해 경계를 이루는 필름을 포함하고, 프레임의 열 팽창에 비해 필름의 열 팽창이 제2 방향 보다는 제1 방향을 따라서 더 크고, 필름은 프레임 형상과는 다른 주위 기준 온도에서의 형상을 갖고, 상기 필름의 형상은 소정의 상승된 기준 온도 이상의 온도에서 제1 방향에서의 열 팽창을 위해 필름 및 프레임 사이의 충분한 공간을 허용하면서, 간극을 감소시키도록 선택되는 것을 특징으로하는 조립체.
Patent KR-20010075612-A (KR)
IPC: C22C38/06
Filed: 2000-03-17
Abstract: 밀 스케일을 제거하지 않더라도 레이저 용접성이 우수한 강재를 제공하는 것으로서, 중량%로, C:0.01∼0.20%, Si:0.01∼1.5%, Mn:02∼2.0%, P:0.02% 이하, S:0.02% 이하, Al:0.0005∼1.0%를 함유하고, 잔부가 Fe 및 불가피한 불순물로 이루어지며, 밀 스케일의 두께가 50μm 이하이며, 또, 0.4 < 0.88〔% A1〕+ 1.14〔% Si〕< 1.5를 충족하는 레이저 용접용 강이고, Nb, V, Mo, Cu, Ni, Cr, B이 1종 또는 2종 이상을 추가로 함유하였다.
Patent KR-20010080192-A (KR)
IPC: H04M3/42
Filed: 1999-10-18
Abstract: 호스트 컴퓨터(106)는 비음성 데이터를 무선 단말기(102)에 송신하기를 원한다.  이것은 시그널링 망(302)을 통해 콜백을 요청하는 무선 단말기(102)에 단문 메세지 서비스(SMS)를 송신함으로써 이루어진다.  상기 SMS 메세지에 응답하여, 무선 단말기(102)는 비음성 데이터를 무선 인프라스트럭쳐(104)로 재송신하고, 따라서 호스트 컴퓨터(106)를 콜백한다.
Patent KR-20010080546-A (KR)
IPC: G01R1/067
Filed: 1999-11-15
Abstract: 동축 접촉 어셈블리(100,100',100'')에는 지지부에 고정적으로 장착되는 외부 원통형 배럴(102,102',102'')이 있고, 그 내부에 그라운드 플런저(104,104'')가 포개어 끼우는 식으로 활주 가능하게 수용되며, 차례로 그 그라운드 플런저의 구경 내에 인터페이스 덕터 요소(106,106'')가 포개어 끼우는 식으로 활주 가능하게 수용된다. 상기 인터페이스 덕터 요소는 동축 케이블(1)의 브레이드층에 전기적으로 맞물리도록 고정 부착되며, 복수의 기다란 종방향으로 연장된 핑거(106b)가 형성되는데, 그 핑거는 일정량 방사상 외부로 연장되어 상기 그라운드 플런저의 구경 내에 수용될 때 단단히 전기적으로 맞물리도록 바이어스된다. 상기 인터페이스 덕터 요소와 그라운드 플런저 사이의 역 전기 접속은 그라운드 플런저(104')의 핑거(104b')를 고체 관 모양의 인덕터(106b')와 전기적으로 맞물리도록 바이어스시킨다. 유전체 스페이서(110,110')는 신호 슬리브(16) 상에 장착되어 인터페이스 덕터 요소(106,106')와 내부 접촉 플런저(18) 사이의 전기적 단락을 방지한다. 내부 또는 신호 플런저(18)는 내부 플런저(18) 상에 장착된 유전체 스페이서(108,108',108'')에 의해 그라운드 슬리브와의 동축 관계가 유지된다. 코일 스프링(112,112'')은 인터페이스 덕터 요소 둘레에 배치되어 그라운드 슬리브를 외부로 바이어스시킨다.
Patent KR-20010093260-A (KR)
IPC: G21C19/48
Filed: 2000-01-14
Abstract: The invention provides a series of techniques for processing uranium containing feed materials such as uranium ores, reprocessed uranium, uranium containing residues and uranium containing spent fuel. The processes described involve fluorination of uranium containing material, separation of the uranium containing material from other materials based on ionization thereof with the non-ionized fluorine containing material being recycled. Metallic uranium and/or plutonium and/or fission products may result. The technique offers advantages in terms of the range of materials which can be reprocessed and a reduction in the number of complexity of stages which are involved in the process.
Patent KR-20010102483-A (KR)
IPC: B01J35/10
Filed: 2000-03-01
Abstract: 본 발명은 니트로 방향족 화합물 중의 니트로기를 수분의 존재 하에 상응하는 아민으로 수소화시키는 데 사용할 수 있는 수소화 촉매 및 그 제조 방법에 관한 것이다. 상기 촉매는 담체 상에 니켈을 포함하고, 안정화된 것이며, 바이모달 니켈 결정 크기 분포를 가진 니켈 결정을 함유하며, 니켈 함량이 60 중량% 내지 80 중량%(촉매의 총 중량 기준)이고, 환원도(100℃의 온도에서 1 시간 동안 환원 시킨 후)가 70% 이상이다.
Patent KR-20010104721-A (KR)
IPC: G06F13/42
Filed: 1999-12-09
Abstract: 본 발명은 메모리 출력 드라이버가 출력 동작 후에 데이터 버스를 전자적으로 해제시키기 위한 한정된 시간을 요구한다는 사실을 고려하여, 마이크로컨트롤러(110)에 의한 데이터 버스(120)의 제어를 다룬다. 각 메모리(130, 132)는 판독 동작 후 다른 I/O 동작 전에 마이크로컨트롤러(110)를 가변 길이의 대기 상태에 선택적으로 두기 위한 관련 대기 상태 번호를 갖는다.
Patent KR-20020013552-A (KR)
Title: 위치 조절 장치
IPC: F41A21/08
Filed: 2000-05-16
Abstract: 본 발명은 무기 시스템의 적어도 제 1 및 제 2 모듈의 상호 위치를 조절하기 위한 장치에 관한 것이다.  본 발명의 조절 장치는 상기 제 1 조절 편심체(9)를 회전시킴으로써 상기 제 1 모듈이 상기 제 2 모듈에 대해 제 1 조절 직선(x)을 따라서 변위될 수 있는 방식으로 적어도 상기 제 1 모듈에 유효하게 연결되거나, 또는 상기 제 1 모듈이 제 1 조절 평면내에서 피봇할 수 있는 방식으로 유효하게 연결되는 적어도 하나의 제 1 회전가능한 조절 편심체(9)를 포함한다.
Patent KR-20020016807-A (KR)
IPC: G02B6/12
Filed: 2000-05-29
Abstract: 전기배선(120, 121, 122, 123)을 갖는 전기배선판(12)과 그 전기배선기판(12)에 적층되고 한쪽 면에는 광부품이 실장되는 광배선층(11)을 구비한 광·전기배선기판이다. 광배선층(11)은 광을 전파하는 코어(111)와, 코어(111)를 협지하는 클래드(113)와, 코어(111)를 전파하는 광을 그 광배선층(11)에 실장된 광부품을 향하여 반사하는 또는 광부품으로 부터의 광을 코어(111) 중에 반사하는 미러(115)를 가지고 있다. 또, 전기배선기판(12)은 광배선층(11)을 적층방향으로 관통하고, 그 한쪽 끝면에는 광부품(22)이 설치되며, 그 광부품(22)와 전기배선(120, 121, 123)의 전기적 도통을 취하는 도전성 설치수단을 갖는다.
Patent KR-20020023232-A (KR)
IPC: G01F1/00
Filed: 2001-04-18
Abstract: 유입 유로와 유출 유로를 구비한 도관 내에서 유동하는 매체의 적어도 하나의 파라미터를 측정하기 위한 종래의 장치는 유입 유로로 유입되는 유체가 측정 소자에 도달할 수 있어 측정 소자의 측정 보정 특성을 변경시킬 수 있는 단점을 갖는다.  본 발명에 따른 장치(1)는 유입 유로(24)와 유출 유로(44) 사이에 분리 소자(70)를 가진 전환 유로(33)를 포함하며, 이에 의해 유체가 분리될 수 있으며, 따라서 측정 소자(60)에 도달하지 않을 수 있다.
Patent KR-20030060215-A (KR)
Inventor: SHIN DONG CHAN
IPC: H01J9/24
Filed: 2002-01-07
Abstract: PURPOSE: An apparatus is provided to achieve improved accuracy of formation of a seal edge of a funnel, while simplifying a seal edge lapping process and reducing manufacturing costs. CONSTITUTION: An apparatus comprises a support rim(30) having a size and a shape corresponding to a seal edge(2) of a funnel(1), a ring(40) mounted on the outer bottom surface of the support rim in such a manner that the ring presses the seal edge of the funnel, a fixing unit(50) for fixing the support rim to a mounting plate(24) of an air former(20) in such a manner that the support rim is movable in a vertical direction, and an alignment unit(70) for aligning the support rim to a lower mold(10). The fixing unit includes a plurality of arms(54) each of which has an end fixed to the mounting plate of the air former, a guide bar(58) mounted on the support rim, a stopper(62) mounted on the top of the guide bar, and a spring(64) arranged at the bottom of the guide bar.
Patent KR-20030061202-A (KR)
Title: Wafer with groove for lapping and polishing process
Inventor: KIM NAM JUN
IPC: H01L21/304
Filed: 2002-01-11
Abstract: PURPOSE: A wafer having a groove for a lapping and polishing process is provided to be capable of easily penetrating a demounting solution for separating a wafer from a carrier, preventing slurry from intruding into a gap between the wafer and the carrier, and restraining the damage of the wafer due to wax by forming a V-groove on the wafer instead of forming an additional via hole or V-groove on the carrier. CONSTITUTION: After carrying out a lapping and polishing process on a wafer(30) attached on the flat surface of a carrier, the wafer is demounted from the carrier. At this time, the wafer includes an attached surface(31), a plurality of grooves(33), and a plurality of lattices(35). Preferably, a V-groove is used as the groove. Preferably, the grooves are spaced apart from each other.
Patent KR-20030061920-A (KR)
Inventor: LEE GYEONG DO
IPC: F25D21/08
Filed: 2002-01-12
Abstract: PURPOSE: A refrigerator is provided to remove frost formed on a lower area and a side area of a heat exchanger during defrosting. CONSTITUTION: A refrigerator includes a pair of extended plates(40) extended from both sides of defrosted water receiving part(30) along a heat exchanger(20) to have the heat exchanger therebetween; and an auxiliary heater member(41) placed on the extended plate to defrost both sides of the hat exchanger. A main heater member is placed on the defrosted water receiving part to radiate heat together with a heater tube(21) to transmit heat to the heat exchanger so as to remove frost formed on the heat exchanger. The auxiliary heater member is turned on/off independently of the main heater member. Alternatively, the auxiliary heater member is extended from the main heater member. The auxiliary heater member is interposed between side areas of the heat exchanger and the extended plate. The auxiliary heater member is arranged on a surface of the extended plate zigzag. The main heater member and the auxiliary heater member cover the heat exchanger to remove frost formed on the lower area and the side area of the heat exchanger.
Patent KR-20020088346-A (KR)
Title: Pressure responsive device and method of manufacturing semiconductor substrate for use in pressure responsive device
Inventor: NAKABAYASHI MASAKAZU
IPC: H04R7/18
Filed: 2002-01-22
Abstract: PURPOSE: To provide a pressure sensing device with a thin profile that can be small-sized while maintaining high performance and to provide a manufacturing method for a semiconductor substrate used for the device. CONSTITUTION: By providing a back electrode 5 to a bottom side 4a of a recessed part 4 formed to the center of a major side 3a of the semiconductor substrate 3 and fixing a circumferential edge of a vibration electrode film 7 onto a circumferential surface 3c spread around the recessed part 4 a capacitor comprising the back electrode 5, a space 8 (air) and the vibration electrode film 7 are configured. Since etching is adopted to form the recessed part 4, dispersion in the depth of the recessed part 4 in respective devices can be suppressed, resulting that the inexpensive pressure sensing device with high reliability can be obtained.
Patent KR-20030063797-A (KR)
Title: Apparatus and method for setting neutral position of electronic power steering apparatus
Inventor: JUNG DAE JONG
IPC: B62D6/00
Filed: 2002-01-24
Abstract: PURPOSE: A system and a method for determining the neutral position of an electric power steering device are provided to determine the neutral position of a vehicle by checking the straight advance of the vehicle with the steering angular velocity signal sensed by a motor position sensor and the signal sensed by a torque sensor. CONSTITUTION: A motor position sensor(6) estimates the steering angular velocity of a motor by sensing the position of a motor(5). An ECU(Electronic Control Unit)(10) determines the neutral position of the steering angle by using the vehicle speed sensed by a vehicle speed sensor, the torque sensed by a torque sensor and the steering angular velocity estimated by the motor position sensor. The ECU outputs a voltage value corresponding to the neutral position of the steering angle to a drive circuit(4).
Patent KR-20030066178-A (KR)
Title: Optical filter for plasma display panel and manufacturing method thereof
Inventor: CHO GYU JUNG
IPC: H01J11/44
Filed: 2002-02-05
Abstract: PURPOSE: An optical filter and a method for manufacturing the same are provided to reduce weight and thickness of the filter, while reducing manufacturing procedures and costs. CONSTITUTION: An optical filter(20) comprises a glass substrate(21); a reflection preventive light transmitting film(25) formed on the glass substrate, and which includes a transparent substrate, a reflection prevention film formed on the front surface of the transparent substrate, a near red light shielding and selective light absorbing layer formed on the rear surface of the transparent substrate, and an adhesive layer formed on the near red light shielding and selective light absorbing layer, wherein the adhesive layer directly contacts the front surface of the glass substrate; an adhesive intermediate film(22) formed on the rear surface of the glass substrate; an electromagnetic interference shielding layer(23) formed on the adhesive intermediate film; and a reflection preventive film(24) formed on the electromagnetic interference shielding layer.
Patent KR-20020068294-A (KR)
Title: Method for producing l-glutamic acid
Inventor: AKIYOSHI NAOKI
IPC: C12N1/21
Filed: 2002-02-20
Abstract: PURPOSE: To provide a method for producing L-glutamic acid by a fermentation method, by which L-glutamic acid can be efficiently produced even if a material containing an organic acid for inhibiting the growth of bacterium is used as a sugar source. CONSTITUTION: A bacterium capable of producing L-glutamic acid is cultured in a medium which has pH <=5.0 and in which the total content of the organic acid inhibiting the growth of the bacterium at the pH is an amount not to inhibit the growth of the bacterium to produce L-glutamic acid.
Patent KR-20030070752-A (KR)
Title: Fabrication Process of Porous SiC Particulate Preform Using Polymer Former
Inventor: HONG SUN HYEONG
IPC: C04B35/565
Filed: 2002-02-26
Abstract: PURPOSE: Provided is a simple production method of porous SiC preforms satisfying initial volume fraction by ball-milling and pressing the mixture of SiC, polymer former and additives. CONSTITUTION: The porous SiC preforms used in metal matrix composite is produced by the following steps of: ball milling SiC powder, polymer former, ethyl cellulose(400-500micrometer), and additives such as an inorganic binder, flocculant (polyacryl amide) and water, wherein the volume fraction of SiC and ethyl cellulose is 1:0.9 - 1:1.6 and at least 30wt.% of polyacryl amide is added; pressing the prepared slurry to decrease the moisture content of the slurry; drying through at least two steps of natural and forced (oven at 100deg.C) drying; heating over 1100deg.C at a rate of 5deg.C/min, except for the range of 250-450deg.C at a rate of 2deg.C/min.