baber/WOPTO huggingface dataset:
Patent KR-20020051871-A (KR)
Inventor: AKIYAMA JUN
IPC: G11B7/125
Filed: 2001-12-21
Abstract: PURPOSE: An optical disk apparatus and a method for adjusting laser power of the same are provided to maintain the power irradiated on an active layer at an optimum laser power. CONSTITUTION: An optical disk apparatus(10), irradiating an active layer of an optical disk, with a laser, comprises a detection unit for detecting an amount of change in a factor causing fluctuation in effective power; a storage unit for storing compensation data indicating a relationship between an amount of change in the factor causing fluctuation in effective power and an optimum emitted power corresponding to the amount of that change; and a control unit for adjusting emitted power based on the compensation data and a value detected by the detection unit. The optical disk further comprises an acquisition unit for acquiring compensation correction values for correcting the compensation data from an optical disk on which recording is to be carried out. The control unit adjusts emitted power based on the detected value, the compensation data, and the compensation correction values.
Patent KR-20030054260-A (KR)
Inventor: HAN DAE SEONG
IPC: H05B6/66
Filed: 2001-12-24
Abstract: PURPOSE: A microwave oven is provided to achieve improved resistance against vibration and effectively remove noises by arranging choke coils at the inside and outside of the magnetron filter box. CONSTITUTION: A microwave oven comprises a DC power(1), a switching unit(2), an inverter unit(3), a high voltage transformer(4), a magnetron driving unit(5) and a magnetron filter box(6). The magnetron filter box includes a magnetron(7), the first choke coil(8a) and a condenser(9). The microwave oven further comprises the second choke coil(10) arranged at the outside of the magnetron filter box and connected in serial to the first choke coil in such a manner that the second choke coil cooperates with the condenser so as to constitute a low pass filter circuit. The first choke coil has an inductance smaller than the inductance of the second choke coil.
Patent KR-20030058326-A (KR)
Title: Guide pin for a robot
Inventor: LIM SU HO
IPC: B25J19/00
Filed: 2001-12-31
Abstract: PURPOSE: A guide pin for a robot is provided to reduce uneven wear by rotating a contact portion of the guide pin and the substrate, and to replace the contact portion of the guide pin easily and promptly by releasing the stopper from the column. CONSTITUTION: A guide pin for a robot is composed of a fitting part(202) inserted to an installation hole of a robot arm; a column part(204) integrally extended from the fitting part to the upper part; a contact part(206) fitted around the column part; and a stopper(208) combined with the upper part of the column part to prevent displacement of the contact part. Uneven wear is reduced by rotating the contact part contacted to the substrate, and the contact part of the guide pin is replaced conveniently and promptly by releasing the stopper from the column part.
Patent KR-20010072780-A (KR)
IPC: A23K1/14
Filed: 1999-08-17
Abstract: A process for converting phytate into inorganic phosphate comprises making a slurry of the phytate containing food, a solvent mixture of water and an immiscible organic solvent and a phytase and removing the organic solvent following the reaction. The phytate containing food may be sunflower seeds, rapeseeds or other oilseeds and the organic solvent is preferably pentane, hexane or heptane.A chelating agent, preferably ascorbic acid, pthalic acid, citric acid or EDTA may be added to the slurry.The slurry may further comprise cereals, fats vitamins, amino acids and other enzymes.
Patent KR-20010106458-A (KR)
IPC: G02F1/1362
Filed: 1999-11-30
Abstract: 본 발명은 액정층을 사이에 두고 제1 기판과 제2 기판을 가지며, 제1 기판에 형성된 박막 트랜지스터가 상기 액정층 상에 형성된 화소 전극과 접속되고, 상기 화소 전극과 상기 박막 트랜지스터 사이에 평탄화용 절연막을 가지며, 상기 평탄화용 절연막에 컨택트 홀이 형성되어 이루어지는 액정 표시 장치에 있어서, 상기 평탄화용 절연막을 화학식 a 또는 b 또는 c로 표시되는 수지 조성물에 의해 형성하였다. 
     <화학식 a> 
     
       
     
     <화학식 b> 
     
       
     
     <화학식 c> 
     
       
     
     <화학식 I> 
     
       
     
     <화학식 II> 
     
       
     
     <화학식 III> 
     
       
     
     <화학식 IV> 
     
       
     
     <화학식 V> 
     
       
     
     <화학식 VI> 
     
       
     
     <화학식 VII> 
     
       
     
     <화학식 VIII> 
     
       
     
     단, 식 중 Ar 1 은 화학식 I, II, III의 구조에서 선택되며 단독으로 사용하거나 병용할 수 있고, Ar 2 는 화학식 IV, V, VI, VII, VIII의 구조에서 선택되며 단독으로 사용하거나 병용할 수 있으며, 화학식 a의 I는 3≤I ≤1000의 정수, 화학식 b 또는 c의 m, n은 2≤m, n≤100의 정수이고, X는 중합 가능한 다중 결합을 나타내는 기이다. 
     상기 수지 조성물은 가시광선 영역의 투명성이 높고, 평탄화 특성이 우수하며, 레지스트 박리액에 대한 내성을 갖는다.  따라서, 상기 수지 조성물을 액정 표시 장치의 평탄화용 절연막에 사용함으로써, 콘트라스트가 높고, 화질 저하가 적은 액정 표시 장치를 얻을 수 있다.
Patent KR-20010079778-A (KR)
IPC: A01N43/90
Filed: 1999-09-03
Abstract: 본 발명은 융합-벤젠 유도체, 그의 염 및 조성물, 중간체, 이들의 제조방법 및 제초제로서의 이의 용도에 관한 것이다.
Patent KR-20010075420-A (KR)
IPC: C07K5/075
Filed: 1999-11-01
Abstract: 본원에는 N-(3,3-디메틸부틸)-APM의 B형 결정을 절대 습도가 0.203kg/kg 이하인 환경하에서 재료 온도(品溫: material temperature)를 25 내지 80℃로 제어하여 유지함으로써 결정 전이시켜 안정성이 우수한 A형 결정을 제조하는 방법 및 N-(3,3-디메틸부틸)-APM의 D형 결정을 절대 습도가 0.0550kg/kg 이하인 환경하에서 재료 온도를 25 내지 80℃로 제어하여 유지함으로써 결정 전이시켜 A형 결정을 제조하는 방법이 기재되어 있다.  이러한 결정 전이법에 따르면, 안정성이 우수한 결정을 저비용으로 또한 안정적으로 수득할 수 있다.
Patent KR-20010092747-A (KR)
Title: Multilayer Polyolefin Laminate Having Non-Outer Layer Of Syndiotactic Polypropylene
IPC: C08L23/08
Filed: 1999-11-16
Abstract: A multilayer polyolefin film for use in a vertical form fill seal packaging comprising at least one non-outer layer of syndiotactic polypropylene with a density of from about 0.89 to about 0.90 gm/cm<3> and a melt index of from about 0.5 to about 2.0 dg/min and at least about 60% rrrr pentads measured using NMR, together with at least two layers of an interpolymer of ethylene and at least one C3-C20 alpha-olefin having a density of less than about 0.910 gm/cm<3> and a melt index of about 0.5 to about 2.0 dg/min.
Patent KR-20020000138-A (KR)
IPC: G03B42/02
Filed: 1999-11-23
Abstract: 영상 스크린(10)을 스캐닝하기 위한 장치는, 연속 벨트 드라이브(16), 이 연속 벨트 드라이브(16)에 장착된 제1 스캐닝 헤드(12), 연속 벨트 드라이브(16)에 장착된 제2 스캐닝 헤드(14), 및 영상 스크린(10)에 걸쳐 빔 경로로 레이저 빔(21)을 지향하도록 위치한 레이저(20)를 포함하며, 영상 스크린(10)에 걸쳐 이동할 때 레이저 빔 경로와 동일선상의 제1 및 제2 헤드(12, 14) 각각을 순차적으로 이동하도록 위치된다.
Patent KR-20010101123-A (KR)
Title: Lubricant compositions comprising multiple antioxidants
IPC: C10N40/12
Filed: 1999-11-19
Abstract: A composition is disclosed that comprises lubricating oil and at least a first antioxidant and a second antioxidant, the first antioxidant being a secondary diarylamine and the second antioxidant being a 2,2,4-trialkyl-1,2-dihydroquinoline or a polymer thereof. Also disclosed is a method of increasing the oxidation stability of a lubricating oil comprising adding thereto at least a first antioxidant and a second antioxidant, the first antioxidant being a secondary diarylamine and the second antioxidant being a 2,2,4-trialkyl-1,2-dihydroquinoline or a polymer thereof.
Patent KR-20020009576-A (KR)
IPC: C10N30/06
Filed: 2000-02-15
Abstract: 본 발명은 윤활유 첨가제이고, 윤활유 첨가제는, 
     a. 불포화 또는 포화 에스테르 또는 산, 
     b. 하기 식의 디아민, 
     c. 이황화탄소, 및 
     d. 몰리브데늄 화합물의 반응 생성물을 포함한다. 
     
       
     
     여기서, R 8 은 탄소 원자 1 내지 40개를 갖는 알킬기, R 9 및 R 10 은 독립적으로 선택된 지방족 또는 방향족 잔기이고, W는 산소, 황 또는 -CH 2 -이다. 
     상기 첨가제는 마찰 개질성 및 바람직한 내마모성, 극압성 및 산화 안정성을 윤활유에 부여한다.
Patent KR-20010112930-A (KR)
IPC: A61K48/00
Filed: 2000-03-31
Abstract: 치료용 유전자 발현 염기서열 및 유전자 치료용 약제가 개시된다.  편평상피세포에 치료용 유전자를 특이적으로 발현시키는, 하기 (a) ∼ (d) 중 어느 하나의 치료용 유전자 발현 염기서열이 개시된다. 
     (a) 서열번호 1 로 표시되는 염기서열 
     (b) 서열번호 18 로 표시되는 염기서열 
     (c) 서열번호 17 로 표시되는 염기서열 
     (d) 서열번호 16 로 표시되는 염기서열. 
     또한 상기 어느 하나의 염기서열의 하류영역에 치료용 유전자를 갖고, 치료용 유전자를 편평상피세포에 특이적으로 발현시키는 유전자 치료용 약제가 개시된다.
Patent KR-20020013848-A (KR)
IPC: H05H1/34
Filed: 2000-04-11
Abstract: 플라즈마 토치는 단지 여섯 부분으로 이루어진 교환가능한 카트리지(100)를 포함한다. 
     -전해질 구리로 제조된 양극 노즐(1) 
     -L자형 S32-0684-AMctrolytic 구리로 제조된 음극 지지부(2) 
     -도핑된 텅스텐 음극(3) 
     -플라스틱 물질로 제조된 음극을 중심에 둔 디퓨저 장치(4) 
     -플라스틱 물질로 제조된 조립구(5) 
     -세라믹 삽입부(6) 
     이 부분들은 프레스에 의해 조립되며, 이 부분들의 조립은 토치의 양극(1) 및 다른 구성요소의 냉각회로를 이루는 볼륨(71, 72, 73)을 이루며, 플라즈마 가스는 도관 및 코넥터로 유입된다. 
     유체의 유입 및 유출은 간편 카트리지(100) 조립에 제공되는 연결 및 보유 구조를 통한다는 것은 확실하다.
Patent KR-20020003390-A (KR)
IPC: C22B15/02
Filed: 2000-05-08
Abstract: 본 발명은, 용해로의 내부로 1 - 25 mm 범위의 크기를 가지는 고로용 코크스를 공급함에 의해, 서스펜션 용해로에서 구리 또는 니켈과 같은 비철금속 생산시에 발생하는 슬래그 중의 비철금속의 함량을 감소시키는 방법에 관련된다.     배플이 용해로의 지붕으로부터 아래로 설치될 수 있고, 이러한 배플에 의해 구리 및 니켈을 포함하는 작은 입자들이 용해로의 뒷부분으로 부유되어 슬래그와 함께 유출되는 것이 방지된다.     배플은 작은 입자들이 용해로의 환원 영역에서 침강되게 한다.
Patent KR-20030061072-A (KR)
Title: Antenna of wireless phone
Inventor: KWAK MIN U
IPC: H04B1/38
Filed: 2002-01-10
Abstract: PURPOSE: A cellular phone antenna is provided to connect the second antenna installed in a folder with the first antenna installed in a body with a connectless system, thereby basically intercepting a disconnection of an antenna line. CONSTITUTION: The second coupling plate(121) is installed in a curved surface of a hinge. The second coupling plate(121) is connected to an antenna of a folder(102). The first coupling plate(120) is connected to an antenna of a body(101). The first coupling plate(120) is installed in a body unit by corresponding to the hinge. The first coupling plate(120) and the second coupling plate(121) always have the same surface and uniform gaps within a rotational angle area for switching the folder(102) by the hinge, and are overlapped with each other.
Patent KR-20020066966-A (KR)
Inventor: HSU SHENG TENG
IPC: H01L27/105
Filed: 2002-01-29
Abstract: PURPOSE: A method of fabricating MFMOS memory transistors and MFMS memory transistors are provided not to require exceptionally precise etching procedures. CONSTITUTION: An intermediate oxide layer(30) is deposited by CVD, to a thickness which is at least 150 percent thicker than the thickness of electrode plug. Intermediate oxide layer(30) and silicon nitride are smoothed and thinned by chemical mechanical polishing(CMP). The silicon nitride is then wet etched completely to remove the electrode plug.
Patent KR-20030068312-A (KR)
Title: the gem and manufactur method of syntheticresin
Inventor: CHOI TAECK GYU
IPC: A44C17/00
Filed: 2002-02-15
Abstract: PURPOSE: Provided are a method for producing a ring stone treated with a synthetic resin, by which it is possible to produce a ring stone having elegant and aesthetic appearance, and the ring stone produced therefrom. CONSTITUTION: The method includes the steps of forming a ring stone(10) to be fixed on the top of a ring(16); mechanically sculpturing a shape and patter on the surface of the ring stone(10); treating the sculptured ring stone with a synthetic resin(14); grinding the surface of the ring stone treated with the synthetic resin and applying a brightener on the surface; and adhering the ring stone in the groove(20) of the ring(16). The ring stone is one selected from nacre, Turkish stone, coral, lapislazuli, synthetic amber, and green jadeite.
Patent KR-20030070301-A (KR)
Title: Home Appliance Network System
Inventor: HAN GYEONG HAE
IPC: H04L12/12
Filed: 2002-02-23
Abstract: PURPOSE: A household appliance network system is provided to mutually and smoothly transmit and receive data through one network in a plurality of household appliances which support inter-different communication standards. CONSTITUTION: The first communication standard household appliance(H1) transmits and receives data with a network constructed for home networking according to the first communication standard. The second communication standard household appliance(H2) transmits and receives data with the network according to the second communication standard. An active-type household appliance(10) monitors the first and second communication standard household appliances, and receives control commands of the first and second communication standard household appliances.
Patent KR-20030072024-A (KR)
Title: Sealing structure for oil way of cylinder block and bed plate for automobiles
Inventor: SHIN JONG CHEOL
IPC: F02F11/00
Filed: 2002-03-05
Abstract: PURPOSE: A sealing structure of an oil passages in a cylinder block and a bed plate is provided to prevent the leakage of oil outside an engine. CONSTITUTION: Recessed grooves(122) are formed around an oil passage(121) of a bed plate(120) to be faced to an oil passage(111) of a cylinder block(110). The contact portion of the bed plate is divided to an internal contact portion(123a) and an external contact portion(123b). In installing a sealant or a sealing device(130) of a gasket, the oil passages are sealed by the internal contact portion and the external contact portion. Thereby, the leaked oil is flowed not into an engine but into the recessed grooves.
Patent KR-20030072684-A (KR)
Title: Intelligent front lighting system for automobile have lighting pattern automatic change function
Inventor: SHIN CHANG HWAN
IPC: B60Q1/08
Filed: 2002-03-06
Abstract: PURPOSE: An intelligent front lighting system for a vehicle having the function of automatically changing a lighting pattern is provided to secure driver's field of vision to the utmost by automatically controlling headlamps according to various conditions and forming the most suitable lighting pattern for securing the field of vision. CONSTITUTION: An intelligent front lighting system for a vehicle having the function of automatically changing a lighting pattern comprises headlamps(10) for lighting the front part of the vehicle; a sensing unit(30); a control unit(40) selecting stored table map information corresponding to each information detected from each sensor of the sensing unit and outputting a control signal to change the lighting pattern of the headlamp according to the selected information; and a driving unit(50) to drive the headlamp according to the control signal of the control unit. The sensing unit comprises a first sensor(31) to detect the lighting state of the high beam of the headlamp; a second sensor(32) to detect the speed of the vehicle; a third sensor(33) to sense moisture; a fourth sensor(34) to sense the peripheral brightness of the vehicle; a fifth sensor(35) to detect the steering angle; a sixth sensor(36) to detect a distance from a preceding vehicle; and a seventh sensor(37) to decide the gradient of the vehicle.
Patent KR-20020073400-A (KR)
Inventor: AMEMIYA SHINICHI
IPC: A61B8/06
Filed: 2002-03-14
Abstract: PURPOSE: To provide a signal processing circuit and an ultrasonic Doppler device compiling continuous wave signal paths relative to a delay circuit input for controlling the ultrasonic wave beam using less switches in an ultrasonic continuous wave Doppler device. CONSTITUTION: This ultrasonic Doppler device is provided with multiple amplification circuits 602 amplifying multiple continuous wave input signals respectively and outputting a pair of amplification signals having mutually inverse phases for every continuous wave input signal, multiple selecting circuits 604 alternately selecting a pair of amplification signals for every multiple amplification circuits, and a matrix switch 608 setting output signals of the multiple selecting circuits as the input signals.
Patent KR-20030025780-A (KR)
Title: noctilucence print a press
Inventor: CHO JUN HEE
IPC: B42D15/00
Filed: 2002-03-18
Abstract: PURPOSE: Provided is a luminous printed matter which forms a luminous layer on the surface of the printed matter to collect light at day and emit the collected light at night so that it helps people to see the printed matter clearly even at night. CONSTITUTION: The luminous printed matter is produced by comprising the steps of: (i) preparing the printed paper, in which characters(1a) like printings and writings are printed on the surface of board(1) like a paper or plastic sheet; and (ii) forming the luminous layer(2) which is made from luminous materials on the surface of the printed part at 10-20 micron thickness, in which luminous materials comprises 60% of luminous paint, 30% of transparent U.V. 5% of benzene, 2.5% of hardening agent and 2.5% of silicone liquid.
Patent KR-20020076123-A (KR)
Inventor: OKAMURA MATSUO
IPC: G01R1/073
Filed: 2002-03-22
Abstract: PURPOSE: To provide a probe device efficiently holding many probes without enlarging a probe holder. CONSTITUTION: The probe holder 40 installed on the other opening end side of a housing 31 and holding the base end of a probe is equipped with an outside probe insertion hole 42 installed in the outer circumferential part of a holder body 41 and into which the probe 20 is inserted; an inside probe insertion hole 43 installed in the central part of the holder body 41 and into which the probe 20 is inserted; a groove 44 formed in the holder body 41; and a fixing member 46 detachably attached to the groove 44, and fixing the probe 20 inserted into the inside probe insertion hole 43 to the holder body 41.
Patent KR-20030076050-A (KR)
Title: Cigarette filter with soluble chitosan fibre
Inventor: KIM DONG YEONG
IPC: A24D3/06
Filed: 2002-03-22
Abstract: PURPOSE: A filter for a cigarette by using water-soluble chitosan is provided to manufacture chitosan fiber and to improve connecting force of chitosan to harmful materials like tar and nicotine by applying water-soluble chitosan fiber to the filter of the cigarette. CONSTITUTION: A rear portion of a cigarette filter near a smoker is composed of a usual fiber filter(20). A front portion is composed of one hundred percent of water-soluble chitosan fiber filter(10). A hollow portion of the filter has the water-soluble chitosan because harmful materials in smoking comes in through the hollow portion. Thereby, tar and nicotine of smoke are reduced reasonably. Xylitol is added to an end of the water-soluble chitosan filter to prevent teeth from decaying by melting xylitol with saliva.
Patent KR-20030001228-A (KR)
Title: Indoor CDMA mobile communication systems for supplying traffic signal, control signal and GPS signal simultaneously using existing LAN cable and method for controlling as the same
Inventor: CHOI JUNG HAN
IPC: H04B7/26
Filed: 2002-03-26
Abstract: PURPOSE: An indoor CDMA(Code Division Multiple Access) mobile communication system for simultaneously providing a traffic signal, a control signal, and a GPS(Global Positioning System) signal using a LAN(Local Area Network) cable, and a control method thereof are provided to retrench a cost required in the installation of a GPS providing device, and a cost required in the installation and operation of a repeater or a remote wireless device by transmitting GPS information using the LAN cable and simultaneously transmitting traffic information, control information, a power, and a reset signal using the repeater or the remote wireless device. CONSTITUTION: A GPS antenna(300) receives a GPS signal outputted from a satellite. A coaxial cable(310) transmits the received GPS signal. A GPS adaptor(320) has a GPS receiver(321) for receiving the GPS signal and demodulating the received GPS signal, and an encoder(322) for modulating and encoding a traffic signal, a control signal, and the GPS signal to match the signals to the characteristic of a LAN cable in consideration of the electric and mechanical characteristics of the LAN cable. A base station system(350) has a GPS signal decoder(351) for converting the signal transmitted through the LAN cable(330) into an original GPS signal. The base station system(350) is connected to the GPS adaptor(320) through the LAN cable(330), and is synchronized to the decoded GPS signal.
Patent KR-20030080114-A (KR)
Title: An apparatus for treating the sheet scrap in strip line
Inventor: WEE JONG HWAN
IPC: B21D45/00
Filed: 2002-04-03
Abstract: PURPOSE: An apparatus for continuously treating sheet type scrap cut after checking only a portion containing welding part and defect part during the process of producing sheet material is provided. CONSTITUTION: In an apparatus for treating sheet type scrap(101) cut to various lengths and transported through conveyor belt(103), the apparatus for continuously treating sheet type scrap comprises a coiling part(10) comprising first motor(13) for rotating in a direction any one drum out of first and second coiling drums(11,12) into which a front end part of the cut scrap(101) is inserted and second motor(15) for rotating in a direction a rotation plate(14) on left and right both ends of which the first and second coiling drums(11,12) are mounted so that the scrap(101) is coiled in the coiling part(10) in a roll form; a close adherence fixing part(30) comprising first cylinder(31) for ascending and descending close adherence rollers(33) so that the close adherence rollers(33) are closely adhered to the outer circumferential surface of the scrap(101) coiled on the first and second coiling drums(11,12), and second cylinder(32) for ascending and descending welding tip for welding the scrap to prevent the scrap(101) from unwinding; and a treatment part(50) comprising third cylinder(53) for reciprocating back and forth first and second extracting rings(51,52) arranged at the first and second coiling drums(11,12) so that coiling completed scrap is discharged from the treatment part(50).
Patent KR-20020077832-A (KR)
Title: Genetic modification of plants for enhanced resistance and decreased uptake of heavy metals
Inventor: BAE HYEON JU
IPC: C12N15/82
Filed: 2002-04-04
Abstract: PURPOSE: Provided is a genetic modification of plants for enhanced resistance and decreased uptake of heavy metals, thereby developing plants capable of growing in the heavy metal contaminated soil and containing decreased amount of Pb and Cd. CONSTITUTION: The method for producing a genetically modified plants for enhanced resistance and decreased uptake of heavy metals comprises the steps of: (a) preparing an expression cassette containing the nucleotide sequence which encodes P type ATPase protein transferring heavy metals and is connected under control of transcription and translation controlling factors which can be expressed in plants; (b) constructing an expression vector containing the expression cassette; and inserting the expression vector into plant cells or tissues, wherein the P type ATPase is ZntA; the nucleotide sequence encoding the P type ATPase has the nucleotide sequence of SEQ ID NO: 1; the ZntA has the amino acid sequence of SEQ ID NO: 2; and the heavy metal is As, Sb, Pb, Hg, Cd, Cr, Sn, Zn, Ba, Bi, Ni, Co, Mn, Fe, Cu or V.
Patent KR-20030080673-A (KR)
Title: Al and Al alloy surface treating method using micro arc
Inventor: LIM JIN YEONG
IPC: C25D11/04
Filed: 2002-04-10
Abstract: PURPOSE: A surface treatment method of aluminum and aluminum alloy using micro arc having high heat resistance, scratch resistance, wear resistance, chemical resistance, corrosion resistance and non-tackiness is provided. CONSTITUTION: The surface treatment method of aluminum and aluminum alloy using micro arc comprises the steps of pretreating a metal to be treated(5); charging the metal to be treated into an electrolytic cell(1); and forming a protection film on the surface of the metal to be treated by generating micro arc in the electrolytic cell, wherein the pretreatment step comprises surface stress increasing process and aging treatment process, and wherein the degreased and washed aluminum alloy is charged into the electrolytic cell(1) by degreasing and water washing the metal to be treated(5) such as aluminum alloy(5) after completing the aging treatment process, the anode of DC power supply(7) is connected to the aluminum alloy(5) charged into the electrolytic cell(1) through diode (D) and condensers (C1,C2) while the cathode is connected to the electrolytic cell(1), and a certain electrolyte(3) is filled in the electrolytic cell(10).