baber/WOPTO huggingface dataset:
Patent KR-20010020719-A (KR)
Title: Processes and apparatus for recovery and removal of copper from fluids
Inventor: GOOSEY MARTIN T
IPC: C02F1/46
Filed: 2000-04-07
Abstract: PURPOSE: A system is provided to recover copper from an aqueous solution produced through a production of a printed circuit board by using an electrolytic bath having an anode and a cathode which are separated with a copper ion transmission membrane, and removing copper from an aqueous mixture. CONSTITUTION: A system(10) is provided with a cathode(14) and an anode(16) which are separated with a copper ion transmission membrane(18), and the cathode(14) is formed of stainless steel or other metallic material such as copper and similarly the anode(16) is constituted of a metallic mesh such as a titanium mesh anode. During use of such system(10), copper cation in an anode solution(20) are moved to a cathode solution(22) through the copper ion transmission membrane(18) separating a cell(12), then copper is plated on the cathode(14), and then the copper is removed from the aqueous mixture. Thus, copper is recovered from the treated solution through a production of the printed circuit board without generating solid waste products.
Patent KR-20010095912-A (KR)
Title: Grid precast concrete beam
Inventor: LEE DONG RYEOL
IPC: E04B1/20
Filed: 2000-04-12
Abstract: PURPOSE: A latticed precast reinforced concrete girder is provided to reduce troublesomeness caused by installing a slab form duplicate in a construction field and to construct economically and rapidly by standardized production in a factory. CONSTITUTION: A latticed precast reinforced concrete girder comprises: a grid girder(1) composed of concrete girders(2) arranged in a latticed form to be parallel at regular intervals horizontally and vertically, wherein the length of the outermost concrete(2a) among the concrete girders(2) is a little shorter not to be intersected mutually; and a connection instrument(3) installed on the end of the concrete girder(2a) of the four corners of the grid girder(1) to connect with a column.
Patent KR-20010096803-A (KR)
Inventor: HAN JUNG TAEK
IPC: G06F17/22
Filed: 2000-04-14
Abstract: 단말기 사용자의 문서정보 입력 내용의 방지하여 사용자의 ID, 비밀 번호 등 중요 정보의 유출을 방지하기 위한 것으로, 입력부를 통한 사용자의 문자정보 또는 위치 신호에 따라 단말기 제어부에서 동작 제어를 하며, 동작 제어 상태 및 결과 정보를 디스플레이부로 표시하여 주는 단말기에 문자정보를 암호화하여 입력하도록 한 문자정보 암호화 입력 시스템에 있어서, 사용자에 의해 입력 가능한 문자들의 세트를 저장하며, 문자정보 암호화 입력이 필요할 경우 저장된 문자 세트를 전송하여 주는 응용 프로그램 기능부와, 응용 프로그램 기능부에서 전송되는 문자 세트에서 문자들의 순서를 변경 및 조합하여 문자 배열을 생성하는 믹싱부와, 믹싱부에서 생성된 문자 배열을 그림 정보로 변환하여 단말기 제어부로 전송하여 주는 문자판 표시부와, 그림 정보에 따라 사용자가 입력부 동작을 하여 단말기 제어부에서 위치 신호가 인가되면 이를 확인한 후, 믹싱부에서 생성된 문자 배열에 의해 위치 신호에 해당하는 문자정보를 해석하는 해석부를 포함하여, 특정 좌표에 대한 위치 신호만으로 원하는 문자정보를 입력할 수 있어 사용자 ID, 비밀 번호 등의 중요 정보가 제 3자에게 유출되는 것을 방지할 수 있다.
Patent KR-20010097318-A (KR)
Inventor: KIM CHI KWANG
IPC: A23L2/38
Filed: 2000-04-21
Abstract: 본 발명은 갈근 추출물을 함유하는 기능성 음료에 관한 것으로서, 그 조성은 갈근 추출물이 5 - 85 중량%에 포도당 1-5중량%, 구연산 0.1 - 1 중량%, 염화칼륨 0.001-0.1 중량%, 염화마그네슘 0.01-1 중량%, 젖산칼슘 0.01-1 중량%, 소금 0.01-1 중량%, 구연산 나트륨 0.05-1 중량%, 솔비톨이나 자일리톨 등의 당알코올 1- 10 중량%, 정제수 5 - 70중량%로 구성된다. 
     본 발명의 음료는 칡뿌리(갈근) 추출물에 이소플라본 등을 포함하고 있으므로 음료의 근본적 요소인 갈증해소와 기능성을 현대인의 건강 증진에 많은 이바지를 할 것으로 사료된다.
Patent KR-20010106536-A (KR)
Title: knowledge delivering system using internet and system thereof
Inventor: KIM CHUNG TAE
Filed: 2000-04-26
Abstract: The invention relates to a fuel injection valve (1) with a nozzle body (5), for injecting fuel directly into the combustion chamber (3) of an internal combustion engine. To this end, the inventive fuel injection valve can be introduced into a locating bore (2) of a cylinder head (4) of the internal combustion engine. A metal ring (6) located on the nozzle body (5) deforms on heating, and so after the fuel injection valve (1) has been introduced into the locating bore (2), does not cause a radial compression of the fuel injection valve in said locating bore (2) until heated.
Patent KR-20010049345-A (KR)
Inventor: HARADA HIROSHI
IPC: C04B35/26
Filed: 2000-05-12
Abstract: PURPOSE: To provide ceramic granules which allow the continuous molding of ceramic moldings having good dimensional accuracy with a good flow property, packability into metal molds and sticking resistance and the harmony obtained between a low pressure collapsing property and collapse resistance. CONSTITUTION: The ceramic granules are obtained by granulating one or >= 2 kinds of ceramic particles together with a binder. The ceramic granules are classified as desired to remove the fine particles below 10 μm in grain size. While the granules are rolled and fluidized under such conditions of the volume of the water to be added, addition rate, intra-layer temperature and fluid under which the granules do not flocculate within a fluidized bed, the water is sprayed to impart moisture to the granules. The granules are fluidized and dried within the fluidized bed and are then humidified in such a manner that the moisture content on the granule surfaces attains a range where the flow property sufficient for packing in the molds for the ceramic moldings and that the moisture content over the entire part of the granules attains a range having the harmonized low pressure collapsing property and collapse resistance. The moldings are formed from such ceramic granules.
Patent KR-20010107202-A (KR)
Inventor: KIM HONG GYEONG
IPC: B60R7/06
Filed: 2000-05-25
Abstract: 본 발명은 자동차의 센터 페이스 트레이에 관한 것으로서, 트레이의 안정된 이송을 도모할 수 있을 뿐만 아니라, 충격이 가해질 경우에도 적재된 물품이 이탈되는 것을 안정되게 차단할 수 있도록 한 것이다. 
     본 발명은, 대쉬보드(1)의 중심면에 위치되며, 내부에 소정폭의 수납 공간부(21)가 형성된 센터 페이스 플레이트(20)와; 센터 페이스 플레이트(20)의 수납 공간부(21) 내측을 따라 왕복 이송 가능하게 설치되며, 상부 내면에 물품을 수납하기 위한 적재홈(31)이 형성된 트레이 본체(30)와; 트레이 본체(30)의 진행 방향을 기준으로 하여, 트레이 본체(30)의 내측 상면에 마련되며, 적재홈(31) 내측의 물품이 트레이 본체(30)의 후면과 센터 페이스 플레이트(20) 사이의 수납 공간부(21) 내측으로 이탈되는 것을 방지하기 위한 걸림리브(40);로 구성된다.
Patent KR-20010109817-A (KR)
Inventor: EO CHANG HYEON
Filed: 2000-06-02
Abstract: 본 발명은 차세대 고밀도 기록 매체를 위한 디지털 데이터의 오류 정정 부호화 방법에 관한 것으로서, 입력되는 디지털 데이터를 기 설정된 행렬로 배치하여 소단위 행렬 블록으로 만들고, 상기 소단위 행렬 블록의 열과 행에 기 설정된 크기의 아우터 패리티 데이터와 이너 패리티 데이터를 각각 생성 부가하여 오류 정정 소단위 행렬 블록으로 만든 다음, 상기 오류 정정 소단위 행렬 블록에서 상기 아우터 패리티 데이터가 포함된 행들을 그 외의 행들 사이의 기 설정 위치에 각각 분산 삽입하여 조합함으로써, 제 1 오류 정정 소단위 행렬 블록 및 제 2 오류 정정 소단위 행렬 블록을 만드는 단계; 및 상기 제 1 및 제 2 오류 정정 소단위 행렬 블록을 각각, 상기 아우터 패리티 데이터가 포함된 각 행을 기준 행으로 각 기준 행이 최하위 행이 되도록 행분할하여 복수의 분할 행렬 블록으로 만들고, 상기 제 1 오류 정정 소단위 행렬 블록의 각 분할 행렬 블록 사이에 상기 제 2 오류 정정 소단위 행렬 블록의 각 분할 행렬 블록을 행순으로 순차 삽입하여 조합함으로써, 기록매체 상에 기록하기 위한 디지털 데이터들의 오류 정정 단위 행렬 블록으로 만드는 단계를 포함하여 구성되어,고밀도 기록 매체에 대한 오류 정정 능력을 향상시킨다.
Patent KR-20010109897-A (KR)
Inventor: PARK BYEONG MU
Filed: 2000-06-03
Abstract: 본 발명은, 연속적으로 연결되어 관상의 공동구를 형성하는 복수의 암거유니트를 갖는 암거에 관한 것으로서, 상기 인접한 암거유니트의 결합부에 그라우팅수용부가 형성되도록 상기 암거유니트의 양측단부의 둘레에 걸쳐 형성된 계단형의 홈부와; 상기 암거유니트 단부의 둘레방향에 걸쳐 상기 홈부에 설치된 방수부재와; 상기 인접한 암거유니트의 상기 방수부재의 접촉영역에 마련되어 상기 방수부재를 결합하는 결합부재를 포함하는 것을 특징으로 한다.  이에 의해, 인접한 암거유니트의 결합강도를 증대시킬 수 있으며, 암거유니트 단부의 둘레방향에 배치된 고정부재와 결합부재에 의해 연접한 암거유니트의 접촉결합선 영역의 방수효과를 더욱 향상시킬 수 있다.
Patent KR-20010113139-A (KR)
Inventor: KIM YONG HWAN
IPC: C22B34/34
Filed: 2000-06-16
Abstract: 본 발명은 몰리브덴 산화물이 투입되는 스테인레스 제강 전기로 조업에서 몰리브덴을 회수하는 방법에 관한 것으로, 스테인레스 스크랩 및 몰리브덴 산화물의 장입물을 전기로에 투입하는 투입단계와, 전극의 아크열을 이용하여 상기 장입물을 용해하여 용강을 형성하는 용해단계와, 상기 용강에 분체탄소를 취입하는 취입단계와, 완전 용해된 용강을 전기로로부터 출탕하는 출탕단계로 이루어진 것을 특징으로 하므로, 몰리브덴과 같은 유가금속의 회수율을 향상시킬 수 있다.
Patent KR-20020002164-A (KR)
Title: Method of forming isolation layer of semiconductor device
Inventor: CHA YONG WON
IPC: H01L21/76
Filed: 2000-06-29
Abstract: PURPOSE: A method for manufacturing an isolation layer of a semiconductor device is provided to prevent a dishing phenomenon in performing a planarization process using a chemical mechanical polishing process, by forming a trench in a semiconductor substrate and filling the trench with an oxide layer and by forming a dishing blocking layer on the resultant structure. CONSTITUTION: A nitride layer(110) is formed on a semiconductor substrate(100). A photoresist layer pattern for a trench is formed on the nitride layer. The nitride layer is etched by using the photoresist layer pattern as an etch mask to expose a predetermined region of the semiconductor substrate. A predetermined depth of the semiconductor substrate in the exposed portion is etched to form the trench, and the photoresist layer pattern is eliminated. The first oxide layer(120) and a dishing blocking layer are sequentially formed on the resultant structure. The dishing blocking layer and the first oxide layer are sequentially etched to make the dishing blocking layer on the trench left by a predetermined thickness. After the second oxide layer is formed on the resultant structure, a chemical mechanical polishing process is performed to eliminate the dishing blocking layer on the trench and a planarization process is carried out. The nitride layer formed on the semiconductor substrate is etched.
Patent KR-20000058801-A (KR)
Inventor: LEE CHANG WOOK
Filed: 2000-06-29
Abstract: PURPOSE: A complex investment managing method is provided to enable an inverter to feel an accomplishment by making a web client manage complexly. CONSTITUTION: A complex investment managing method comprises sending file information of a home page to a web client connected through a web browser and conducting a login through the home page file(S1). Information to a choice object is provided to the web client so as to be estimated(S2). The choice object is selected according to the estimated value(S3), and is opened to a web client, which is registered as a member, to collect an investor and an investment money(S4). The object is managed using the investment collected by the investor(S5), and earnings is divided to the investor(S6).
Patent KR-20020004086-A (KR)
Title: A method for competed brokerage service link system on the internet by reverse auction
Inventor: LEE BYEONG IK
Filed: 2000-07-01
Abstract: PURPOSE: An interconnection service method is provided to eliminate complex when trade-concerned persons contact plural agents and to induce service-provision competition from plural certificated agents. CONSTITUTION: A trade-concerned person and a realty agent register as a member through the Internet, and connect to an intermediation service(S100, S200, S210, S300). The trade-concerned person registers realty details, a trade condition and a service condition(S400, S500, S510). After classifying and publishing an information class of the registered realty(S700, S800, S900), the realty agent presents a provision service corresponding to the condition presented by the trade-concerned person(S1000). A dedicated mediator is selected by rating provision services presented from mediators(S1100, S1200). The dedicated mediator concludes a promise with the trade-concerned person on a cyber, and the dedicated mediator concludes a papered mediation contract with the trade-concerned person(S1300). The dedicated mediator plays a mediation role and periodically reports a mediation result to the trade-concerned person.
Patent KR-20020006382-A (KR)
Title: the manufacturing method of food using extracted material in earthworm
Inventor: KIM SEONG HEON
IPC: A23L33/00
Filed: 2000-07-12
Abstract: PURPOSE: Provided is a manufacturing method of health-food using the extract of earthworm, therefore the health-food can be easily taken and rapidly absorbed into a human body. CONSTITUTION: The manufacturing method of health-food is characterized by adding 80-130 part by weight of genuine first milking colostrum as an additive to 100 part by weight of the extract of earthworm. The powdery extract of earthworm is prepared by the steps of: crushing earthworm and adding protease thereto; centrifuging it to obtain supernatant; and freeze-drying the supernatant.
Patent KR-20020009002-A (KR)
Inventor: LIM YEONG SUN
IPC: H04M7/00
Filed: 2000-07-22
Abstract: PURPOSE: An internet picture phone is provided to enable a user to easily use an internet picture phone service using a personal computer and to communicate using a public switched telephone network(PSTN). CONSTITUTION: A speech path network(115) transfers an analog voice signal of a user to the other person and receives an analog voice signal from the other person. A serial transmission means(119) is connected with a personal computer. A voice CODEC(118) converts analog voice signal from the speech path network into a digital signal, which is outputted to the serial transmission means. The voice CODEC decodes digital voice data from the serial transmission means to output the decoded data to the speech path network. A control means(HOOK S/W) connects the speech path network to a pubic switched telephone network through a telephone line when a mode set key is set to a PSTN mode. The control means connects the speech path network to the voice CODEC so as to be connected with the personal computer when the mode set key is set to an internet mode.
Patent KR-20000063938-A (KR)
Inventor: LEE JUN SIK
IPC: G06Q30/02
Filed: 2000-08-11
Abstract: PURPOSE: A method for approving service fees using internet's cyber money is provided to enable users to directly approve service fees on a web site of a service company such as a communications company with the accumulated internet cyber money. CONSTITUTION: A method for approving service fees using internet's cyber money is composed of the steps of registration, confirmation, approval, and reduction. The membership of the client, who is connected to the service company's server, is verified when logging-in(S30). If not a member, the client is guided and becomes a member(S32). The client requests for the confirmation of the payable service fees to the service company website(S34). The service company server outputs the client's service fee on the web page(S36). The client confirms the service fee amount and selects a payment method from the web page(S38). The client selects a cyber money payment as a payment method(S40), confirms one's accumulated cyber money from the service company's web site(S42), and approves the payment of the service fee(S44). The service company informs the cyber money accumulation server of the payment approval completion(S46) and the cyber money accumulation server reduces the amount of client's accumulated cyber money(S48).
Patent KR-20020015487-A (KR)
Title: The minute flute cutting tool
Inventor: KANG HO YUN
IPC: B23B27/02
Filed: 2000-08-22
Abstract: PURPOSE: A cutting tool of a fine groove is provided to simultaneously process a fine groove in a base groove and to increase a life span of the tool by preventing the wear and the transformation of a cutting blade. CONSTITUTION: A cutting tool comprises a base groove cutting portion(20) formed in front of a shank portion(10) and to process a base groove in a workpiece; and a fine groove cutting portion(30) formed many hills(31) with many cutting blades to be lengthened toward a cutting direction. The cutting portion(30) is longer than the cutting portion(20). The fine groove cutting portion(30) is formed by a rough cut portion(40) and a right cut portion(50). Thereby, the wear and the transformation of the cutting blades are prevented.
Patent KR-20020016445-A (KR)
Title: Measuring apparatus for the width of hot material using an infrared laser and line scan camera and method thereof
Inventor: WEE HYEON GON
IPC: G03B37/00
Filed: 2000-08-25
Abstract: PURPOSE: An apparatus and a method for measuring the width of a hot object are provided to accurately measure the width of an iron and steel object having high temperature regardless of the temperature by using an infrared laser and a line scan camera. CONSTITUTION: An apparatus for measuring the width of a hot object comprises a slit beam generator(11) placed at the lower portion of a high temperature iron and steel product to irradiate beams to the entire part of the high temperature iron and steel product, a line scan camera(13) placed at the upper portion of the iron and steel product in opposition of the slit beam generator to crosswise scan the iron and steel product by using the infrared rays irradiated from the slit beam generator, a filter(12) installed on the front face of the lens of the line scan camera to transmit only infrared rays, and an operating unit to obtain the width of the iron and steel product by calculating the number of pixel forming a line measured via the line scan camera.
Patent KR-20010015987-A (KR)
Title: repair mothod of saw blade
Inventor: CHUNG BYUNG CHANG
IPC: B23D45/00
Filed: 2000-08-26
Abstract: PURPOSE: A repairing method of a circular saw is provided to recycle the circular saw by repairing the saw of which disc is curved. CONSTITUTION: A curved disc is supported on a hanger frame of appropriate height(S1). The disc is descended while rotated at a specific speed(S2). The disc is pressurized by blocks of mutually corresponding structure with the hydraulic pressure from right and left sides(S3). The curved disc is corrected through a rolling work with the hydraulic pressure from the right and left sides(S4). When the flatness of the disc is over a specific size, the process is circulated to the first step(S5). Accordingly, cost of components is saved by correcting the curved disc through a press process and a rolling process.
Patent KR-20000072295-A (KR)
Inventor: JUN KYE RUCK
IPC: G01N33/493
Filed: 2000-08-24
Abstract: PURPOSE: A urine analysis system is provided to shorten test time, to sample an accurate data, to simplify a mechanism of an optic measurement part and to realize an accurate optic measurement part in a high speed motion by using a CIS(contact image sensor). CONSTITUTION: A urine analysis system is composed by combining an optic measurement part(1) using a CIS, a main processing part, a periphery part(3) and a strip transport control part(4). The optic measurement part is consisting of an optic measurement unit and a transpose amplifying unit. The optic measurement unit has a programmable gain of 14 bit A/D(analog/digital) 6mSPS conversion ratio, a programmable offset and a programmable clamp voltage as optic measurement elements. The transpose amplifying unit converts a level by synchronizing TC(time constant) exclusively for CIS.
Patent KR-20020029446-A (KR)
Title: Process for Preparing Ultrafine Barium Titanate Dielectric Ceramic Material
Inventor: JE HAE JUN
IPC: C04B35/46
Filed: 2000-09-15
Abstract: PURPOSE: Provided is a preparation method of ultrafine barium titanate(Cu-coated BaTiO3) dielectric ceramic materials for low temperature sintering by coating BaTiO3 with Cu-organic compound solution. CONSTITUTION: The preparation method of Cu-coated BaTiO3 powder is as follows: preparing a slurry by wet ball-milling ultrafine BaTiO3(>=99.9% purity) obtained by hydrothermal method, 2-5wt.%(based on the amount of BaTiO3) of Cu-organic compound, Cu-2 ethylhexanoate, and anhydrous solvent, 1-butanol; drying at 100deg.C for 12hrs.; thermal treating at 500deg.C for 2hrs. The sizes of prepared and sintered BaTiO3 powder, being obtained by firing at 800-1100deg.C for 0.5hr., are 120-130nm and 0.31-0.47micrometer, respectively. Also, the change of permittivity of sintered BaTiO3 is -14 - 52% in a range of -55 - 125deg.C.
Patent KR-20020029571-A (KR)
Title: 9-time steamed -and dried green tea tobacco
Inventor: GO WUN MAM
IPC: A24B15/00
Filed: 2000-10-13
Abstract: PURPOSE: Provided is a mild cigarette without stimulation to bronchus and/or other respiration organs when smoking the cigarette by comprising specific amount of nine-steamed and nine-dried green tea. CONSTITUTION: The cigarette comprises 10% green tea leaves and 90% cigarette leaves. The cigarette leaves are penetrated by beneficial green tea components such as polyphenol, catechin, flavin, amino acid and/or other enzymes. The green tea is prepared by steaming and drying by turns in nine times. The dried cigarette leaves are immersed in green tea solution for 24 hours then steamed and dried for nine times by turns. By the process, the catechin component can detoxicate harmful components such as nicotine or tar contained in the cigarette leaves to lead a neutralized mild product. The obtained product(300) is constructed of a filter portion(100), a connection pipe(200,200a), a guide groove(210) and the cigarette leaves(310).
Patent KR-20020029818-A (KR)
Title: Bio-supporter and manufacturing method of same
Inventor: LEE YEONG HUN
IPC: G01N33/547
Filed: 2000-10-14
Abstract: PURPOSE: A bio-supporter and a preparing process thereof are provided, therefore three-dimensional structured biopolymer can be effectively fixed on the bio-supporter and the complementary binding of the biopolymer on the bio-supporter can be improved. CONSTITUTION: The bio-supporter is a slide glass having aldehyde group combined with the dendrimer on its surface, in which the amine group of the dendrimer may be further connected with a linker selected from the group consisting of a compound of formula(I), a compound of formula(2), a compound of formula(3) and n-hydroxysuccin imidyl iodoacetate(NIA). The process of preparing the bio-supporter comprises the steps of: reacting aldehyde group on a silylated slide with dendrimer to prepare a schiff base, so that a dendrimer monolayer is formed on the silylated slide; and adding sodium borohydride (NaBH4) to the dendrimer monolayer to convert the aldehyde group on the slide glass into alcohol, in which after adding sodium boroydride, a linker may be further added into the dendrimer monolayer.
Patent KR-20010060183-A (KR)
Inventor: DEGANI YINON
IPC: H01L21/60
Filed: 2000-10-20
Abstract: PURPOSE: A method of fabricating IC package is provided to lower the height of an IC package. CONSTITUTION: The method includes the step of thinning the IC device of a chip form. At the final stage of assembly in which a chip is flip chip-bonded to a substrate, and the backside of the chip is exposed due to thinning. When the method is used, the chip of which final thickness is about 2 to 8 mils can be manufactured and the whole thickness of the package is considerably reduced.
Patent KR-20020031014-A (KR)
Title: Assembly Panel For Golf Putting Practice
Inventor: CHOI BEOM
IPC: A63B69/36
Filed: 2000-10-21
Abstract: PURPOSE: An assembly panel for golf putting exercise is provided to enable a user to more effectively exercise putting action toward a hole cup while freely changing a putting position by embodying various kinds of green having different shapes and curves. CONSTITUTION: The assembly panel for golf puting exercise consists of plural putting panels(10) that a green part(2) is attached to the top surface thereof respectively. The green part is provided with a hole cup insertion portion(10a) into which a hole cup(1) having a hole cup cover(1a) is received, and artificial grass(15) is covered around the hole cup insertion portion. The plural putting panels are assembled to embody a curved plane similar with irregular green around an actual hole cup. The putting panel is formed with an assembly groove(70) on the circumference thereof into which an assembly rod(60) is inserted and fastened.
Patent KR-20010000863-A (KR)
Inventor: KIM JONG MOK
IPC: C22C9/00
Filed: 2000-10-24
Abstract: PURPOSE: A pink coloured gold alloy is disclosed to reduce production cost by reducing content of gold, as compared with prior gold alloys, has good mechanical and physical properties sufficient to produce accessaries. CONSTITUTION: A pink coloured gold alloy comprises 20 weight part of gold, 35-45 weight part of silver and 35-45 weight part of copper based on total 100 weight part of product. The alloy can also contain 0.5-5 weight part of at least one metal selected from the group of palladium, nickel and zinc, based on 20 weight part of such gold. The gold alloy is prepared by rolling each of the materials such as gold, silver and copper into thin foil sheets and cutting them into pieces, placing them in a ceramic melting port to form melt by heating and then pouring into the molten material into a mold to produce the alloy product having pink colour suitable to various applications.