baber/WOPTO huggingface dataset:
Patent KR-20030039858-A (KR)
Inventor: CHOI GYEONG IL
IPC: C21C5/00
Filed: 2001-11-16
Abstract: PURPOSE: A method for weighing and charging ferro alloy in steel manufacture is provided to accurately weigh and inject the injection quantity of ferro alloy in a process for using ferro alloy facility of an ironworks. CONSTITUTION: The method for weighing and charging ferro alloy in steel manufacture comprises first process (S11,S12) of inputting storage hopper and quantity to be weighed and instructing initiation of weighing; second process (S13 to S15) of initializing respective weighing values and injection values in weighing database and injection database according to instruction of weighing initiation; third process (S16) of judging whether or not a weighing hopper on a line in the same group is used as a storage hopper to be weighed set by an operator after initializing the respective databases; fourth process (S17) of sequentially initiating weighing of the set storage hopper in case of using the weighing hopper of the same line as results of the judgement in such a way that ferro alloy is fed and transferred by starting conveyor and feeder to transfer ferro alloy fed from the storage hopper; fifth process (S18) of measuring weight of the fed ferro alloy by load cell mounted on the lower part of the weighing hopper, and continuously comparing the measured values with a set value; sixth process (S16) of storing the current weighing value by stopping feeding of ferro alloy and copying current weighing value in the weighing database in case the set value is the same as the measured values of the load cell as results of comparison, and continuously repeating weighing until the set value is the same as the measured values in case that the set value is not the same as the measured values; and seventh process (S20 to S22) of finishing weighing and injecting processes of ferro alloy by finally injecting the weighed ferro alloy into LF facility after transferring the weighed ferro alloy to relay hopper.
Patent KR-20030042121-A (KR)
Title: Method for recording program and record/play abstract of program
Inventor: SHIN SANG CHEOL
IPC: H04N5/92
Filed: 2001-11-21
Abstract: PURPOSE: A method for recording a program and a method for recording and playing a summarized program are provided to increase users' convenience by easily recording a repetitively broadcasted program and increase the efficiency of a recording medium. CONSTITUTION: A user sets up a program to be recorded through a user input or by using a specific guide(200). The user confirms a previously recorded program using a specific descriptor(201). It is judged whether the program is recorded in a consecutive recording mode(202). If so, program consecutive recording information is generated(203). The program is recorded after the previously recorded program(204). It is judged whether the program is recorded in a repetitive recording mode(205). If so, program repetitive information is generated(206). The previously recorded program is deleted, and the program is recorded at the deleted part(207).
Patent KR-20030042264-A (KR)
Title: Positive type photoresist composition
Inventor: KIM SEONG HO
IPC: G03F7/039
Filed: 2001-11-22
Abstract: PURPOSE: Provided is a positive photoresist composition which can reduce the excess usage of expensive dissolution inhibitor, and has excellent resolution and high degree of photosensitivity. CONSTITUTION: The positive photoresist composition comprising an alkali-soluble phenol novolac resin, a photoactive compound(PAC) which is a dissolution inhibitor based on O-naphthaquinone diazide sulfonic ester, a solvent, a dye, and an additive, is characterized by further comprising p-t-butylphenol novolac resin having a repeating unit of formula 1 and a number average molecular weight of 1,000-3,000, as a dissolution inhibiting aid.
Patent KR-20030048799-A (KR)
Title: apparatus for eliminating for glasses
Inventor: KIM CHUNG WAN
IPC: B60R21/02
Filed: 2001-12-13
Abstract: PURPOSE: A glasses removing device is provided to prevent an injury to the face of a driver by using bypassed explosive gas and removing the glasses of the driver. CONSTITUTION: A glasses removing device is composed of a steering wheel(S), an inflator installed at a steering shaft connected to the steering wheel and supplying explosive gas when an air bag(A) is operated, the air bag spread by the explosive gas, and a glasses removing unit(1). The glasses removing unit bypasses the explosive gas, and removes the glasses of a driver by the pressure of the explosive gas.
Patent KR-20030049691-A (KR)
Title: a preventing structure of noise discharge through intake system of engine for vehicles
Inventor: YOON GI SU
IPC: F02M35/108
Filed: 2001-12-17
Abstract: PURPOSE: Structure for preventing the emission of engine noise of an intake system is provided to reduce the engine noise emitted through an intake line of an intake system by repeating a sonic wave offset process. CONSTITUTION: An air duct connecting an air cleaner with an intake manifold of an engine is divided into a main intake line(10) and an auxiliary intake line(20). The main and auxiliary intake lines are connected with a vertical lines(31) and connecting lines(30). The sonic wave emitted from the engine is diversified in the vertical line. The sonic wave advancing toward the first connecting line through the vertical line has a phase change during advance. Thus, the sonic wave faces the original sonic wave in the connecting lines. Thus, the sonic waves are offset.
Patent KR-20030050579-A (KR)
Title: High Performance Road Side Equipment System Based on Dedicated Short Range Communication
Inventor: KIM DONG JIN
IPC: H04B7/15
Filed: 2001-12-19
Abstract: PURPOSE: A DSRC(Dedicated Short Range Communication)-based RSE(Road Side Equipment) system is provided to offer a protocol stack which can perform initialization of every communication with car terminals, manage information on car terminals, perform a setup function from a local server, and effectively manage the car terminals. CONSTITUTION: An RM process(110) of an RM layer(100) communicates with a local server through a higher TCP/IP API and also communicates with a lower L7 layer(40) to prepare an initial transaction with on-board devices of a car which passes a communication region of a road side equipment. In addition, the RM process(110) generates a memory control message for an OBE(On Board Equipment) according to a request of the local server, transfers it to a lower L7 layer(40), and when the RM process(110) receives data stored in a memory of the OBE from the L7 layer(40), it analyzes the data, extracts only the requested data, and transfers it to the local server. An L7 layer includes an I_KE process(41), a B_KE process(42) and a T_KE process(43). The I_KE process(41) performs a communication initialization at a level of an application layer. The B_KE process(42) performs a function or multiple application function, or performs collecting, broadcasting and searching data on several on-board devices of cars. The T_KE process(43) transfers an APDU(Application Protocol Data Unit) to a peer entity of a corresponding system. An LLC process(31) starts transmission or reception of PDU(Protocol Data Unit), controls a logical flow of data, interprets received command PDU and generates a suitable response PDU, and controls and restores error in the LLC layer(30).
Patent KR-20030054856-A (KR)
Title: Structure for preventing foreign material from irruption into Liquid Cristal Display
Inventor: JUNG IN SEOK
IPC: G02F1/1333
Filed: 2001-12-26
Abstract: PURPOSE: A structure for preventing an inflow of alien substances of a liquid crystal display device is provided to prevent the alien substances held between a liquid crystal panel and a back light assembly by forming pads preventing the inflow of the alien substances and a groove for collecting the alien substances. CONSTITUTION: A back light assembly is arranged in a rear surface of a liquid crystal panel(10) for emitting light to the liquid crystal panel. A mold frame(30) is provided for securing and supporting the liquid crystal panel and the back light assembly. A metal chassis(40) is combined with edges of the mold frame and the liquid crystal panel, covering the edges. A securing part(35) is formed following an inner surface of each corner part of the mold frame for securing and supporting each corner part of the liquid crystal panel. A plurality of pads(51,52) for preventing an inflow of alien substances are installed following the securing part of the mold frame to be placed between each corner part of the liquid crystal panel and the securing part of the mold frame. A groove(53) is formed on the securing part for collecting alien substances.
Patent KR-20030057881-A (KR)
Title: Method of forming a copper wiring in a semiconductor device
Inventor: YOO CHUN GEUN
IPC: H01L21/768
Filed: 2001-12-29
Abstract: PURPOSE: A method for forming a copper line of a semiconductor device is provided to be capable of preventing organic solvent or etching gas from being penetrated into a porous low dielectric layer by forming an SiCH copper diffusion barrier at both sidewalls of the porous low dielectric layer using SiH4 plasma. CONSTITUTION: After forming a lower metal line(11) at the upper portion of a semiconductor substrate, a low dielectric layer(12) is deposited on the entire surface of the resultant structure. After sequentially forming a hard mask layer(13) and a photoresist pattern on the low dielectric layer, a damascene pattern is formed by selectively etching the low dielectric layer using the photoresist pattern as an etching mask. At this time, a polymer layer is formed at both sidewalls of the damascene pattern. Then, the polymer layer is transformed into an SiCH copper diffusion barrier(160) by using SiH4 plasma. An upper copper line(17) is then formed on the resultant structure.
Patent KR-20030057979-A (KR)
Title: Internet joint advertising cooperation system
Inventor: OH JEONG HWAN
Filed: 2001-12-29
Abstract: PURPOSE: A system for an Internet common advertisement cooperation is provided to increase an advertisement and sale promotion effect and to reduce a price of a commodity by selling a shopping mall cooperated commodity on the Internet or relaying a common cooperation between enterprises, between an enterprise and an individual, and between an enterprise and a nation. CONSTITUTION: An advertiser connects to an Internet common advertisement cooperation site and is authenticated as a member(S41). The advertiser connects to the Internet common advertisement cooperation site(S42). The advertiser searches or inquires a common cooperated company in a cooperated commodity DB of the Internet common advertisement cooperation site, checks a price, a selling price, a manufacturing company, and a standard of a commodity to be advertised. The advertiser selects a purchase-wanted commodity(S43). The advertiser reads selection information of the common cooperated commodity, selects the common cooperated company, and requests a cooperation. A manager of the Internet common advertisement cooperation site checks contents of the cooperated commodity stored in a cooperation requested table of the cooperated commodity DB with the cooperated company. The manager informs an approval to the advertiser, discusses additional items such as a design with respect to the approval contents, and manufactures the commodity(S45). The advertiser decides to register a shopping mall for the commodity(S46). If the advertiser requests an exhibition of the commodity, the commodity is stored in an Internet shopping mall DB(S47).
Patent KR-20030057990-A (KR)
Title: Animation method in a mobile phone
Inventor: PARK CHAN YONG
IPC: H04B1/40
Filed: 2001-12-29
Abstract: PURPOSE: An animation providing method of a mobile communication terminal is provided to effectively a storage space required to be enlarged for a high definition color animation by setting a background image as a frame unit data format and substituting a portion of the frame data with an object data. CONSTITUTION: When a user issues an execution command for opening an animation file(S101), a controller of a terminal reads the animation file and extracts an operation data, a background image frame data and an object image data(S102). The controller generates background frame data to be displayed at each frame(S103). The controller generates frame image data by substituting each portion of the background image frame data with the object image data(S104). The controller transfers the frame image data to a display unit through a screen buffer, and the display unit processes them to display a corresponding animation on a screen(S105).
Patent KR-20010071721-A (KR)
Title: 스핑고이드 염기를 생산하는 개선된 미생물 균주
IPC: C12N1/14
Filed: 1999-07-02
Abstract: 본 발명은 Pichia ciferrii Y-1031 F-60-10 에 비하여 실질적으로 향상된 스핑고이드 염기의 생산성을 가진 Pichia 균주를 개시한다. 본 발명은 더욱이 스핑고이드 염기의 항균작용에 기초한 초기의 스크리닝 단계를 포함하는 스핑고이드 염기의 향상된 생산성을 가진 미생물 균주를 얻는 방법을 개시한다.
Patent KR-20010071960-A (KR)
Title: 캐스케이드 마스크 구조를 사용하는 광학 ｃｄｍａ
IPC: H04J14/00
Filed: 2000-05-05
Abstract: 광학 CDMA 송신기와 수신기는 정의된 주파수 위치에서 격자의 유무에 의해 정의된 CDMA 코드로 부호화된 파이버 격자 필터장치를 사용하는 공간 변조기를 포함한다.  특정 칩 주파수 근처의 범위에 미치는 파이버 격자 필터의 존재는 "비트 0" 칩을 한정하고, 다른 칩 주파수에서 파이버 격자 필터의 부재는 "비트 1" 칩을 나타낸다.  파이버를 따른 칩 위치의 시퀀스에 결쳐서 선택적으로 제공된 격자의 조합은 CDMA 코드를 정의한다.  이 파이버 격자 필터장치는 각각이 스펙트럼 영역의 CDMA 코드 비트에 대응하는 많은 대역저지 격자 필터의 캐스케이드로서 보여질 수 있다.  결과적으로, CDMA 송신기는 2개의 성분, 광대역 광원, 예를 들어 에르비듐 첨가 파이버 소스(EDFS) 또는 초발광 다이오드(SLD)를 변조하는 데이터 변조기와, 광대역 광원의 스펙트럼의 부분을 선택적으로 전송하고 차단하기 위한 파이버 격자 필터장치를 포함한다.  다음에 이 송신기의 광학 CDMA 부호화된 출력은 광학 네크워크로 출력된다.
Patent KR-20010071994-A (KR)
Title: 통신 방법, 통신 장치, 통신 시스템 및 제공 매체
IPC: H04L12/40
Filed: 2000-05-19
Abstract: 본 발명은 IEEE1394 방식 등의 버스로 접속된 기기 사이에서, 로크 트랜잭션을 실행하는 경우에, 데이터의 전송처리가 적은 회수로 실행할 수 있도록 하기 위해서, 직렬 통신 버스로 접속된 원하는 기기에, 조건부로 기록이 가능하게 제한되어 있는 레지스터가 실장되어 있는 경우에, 상기 레지스터가 실장된 기기에 대하여 다른 기기로부터 버스를 통한 통신으로 기록을 행할 때, 소정의 처리로 레지스터에 기록되어 있다고 상정되는 값을 얻고, 그 값과 레지스터에 기록시키고자 하는 값을 직접 지시하여, 레지스터의 기록 제어를 행하도록 하였다.
Patent KR-20010072506-A (KR)
IPC: A24F47/00
Filed: 1999-08-12
Abstract: An inhaler for use by an individual to inhale a particulate medicament from a reservoir comprises a chamber having a first end connectable to the reservoir to be in air flow communication therewith, a second end for delivering the medicament to the individual upon inhalation and a conduit defining an air flow path extending between the first end and the second end; and, an orifice in the chamber between the first end and the second end, the orifice utilizing the Coanda Effect when the reservoir is in air flow communication with the chamber and upon inhalation by the individual to draw medicament from the reservoir into the air flow path.
Patent KR-20010075485-A (KR)
Title: High pressure reservoir for fuel
IPC: F02M55/02
Filed: 2000-08-01
Abstract: A high-pressure fuel accumulator for a common-rail fuel injection system of an internal combustion engine includes a tubular main body which is equipped with a plurality of connections. In order to provide a high-pressure fuel accumulator which may be used for a large number of similar engines, a continuous connecting strip or several connections, whose dimensions in the longitudinal direction of the tubular main body are greater than the space required for connections, are provided on the tubular main body.
Patent KR-20010089629-A (KR)
IPC: C08L69/00
Filed: 2000-01-24
Abstract: 본 발명은 열가소성 폴리카보네이트, 및 평균 입경이 1 nm 내지 20 ㎛, 바람직하게는 1 nm 내지 10 ㎛, 특히 바람직하게는 5 내지 500 nm인 알루미늄 화합물을 (폴리카보네이트) 100 중량부 당 0.01 내지 30 중량부를 포함하는 열가소성 성형 재료에 관한 것이다.
Patent KR-20010108170-A (KR)
Title: Ｏ-티오카바모일-아미노알카놀 화합물, 이의 약학적 허용염 및 제조방법
Inventor: CHOI YONG MUN
Filed: 1999-02-05
Abstract: 본 발명은 중추신경계 치료에 사용되는, 화학식 (VI)로 표시되는, 라세미성 또는 거울상 이성질체 특성이 풍부한 O-티오카바모일-아미노알카놀 화합물 및 이의 약학적 허용염에 관한 것이다. 상기식에서, Ar은 식 (I)로 표시되는 페닐기이고, R은 수소, 1 내지 8개 탄소수의 저급 알킬, F, Cl, Br 및 I로부터 선택된 할로겐, 1 내지 3개 탄소수의 알콕시, 1 내지 3개 탄소수의 티오알콕시, 니트로, 히드록시 및 트리플루오로카본으로 구성되는 군으로부터 선택된 일원이고, x는 1 내지 3의 정수인 바, R은 x가 2 또는 3일 때 동일하거나 상이하고,  R 1, R 2 , R 3 , 및 R 4 는 서로 동일하거나 상이할 수 있고 독립적으로 수소, 1 내지 8 개 탄소수의 저급알킬, 아릴, 3 내지 7개 원자 구성의 알리파틱 고리 화합물로 구성되는 군으로부터 선택되며, R 3 과 R 4 는 인접 N 원자와 같이 5 내지 7개 원자 구성의 고리 화합물을 형성하는바, 선택적으로, 수소, 알킬 및 아릴기로 구성되는 군으로부터 선택된 치환체로 치환된 추가의 질소 원자를 하나 더 포함 또는 포함하지 않거나 또는 직접적으로 연결되지 않은 산소 원자를 하나 더 포함 또는 포함하지 않고, l, m 및 n 각각은 0 또는 1이다.
Patent KR-20010102080-A (KR)
Title: Method for the Racemization of Optically Active Amines
IPC: C07C213/08
Filed: 1999-05-10
Abstract: A process for the preparation of racemic amines of the formula I where R1 and R2 are different and R1, R2, R3 are alkyl, cycloalkyl, arylalkyl, aryl, heteroaryl and heterocyclic radicals and R3 can also be hydrogen, where the radicals can bear substituents selected from the group consisting of alkyl, cycloalkyl, alkoxy, aryloxy, amino, alkylamino and dialkylamino, which comprises simultaneously reacting in situ the corresponding optically active amine I and the secondary alcohol of the formula II and/or the unsymmetrical ketone of the formula III and the amine of the formula R3NH2 in the presence of hydrogen and a hydrogenation catalyst or dehydrogenation catalyst at elevated temperature.
Patent KR-20010102182-A (KR)
IPC: D04B1/24
Filed: 2000-03-01
Abstract: 본 발명은 일반적인 절단이나 재봉작업 없이 팔다리용 개구 및 숄더스트랩과 끈이 달린 튜브형 니트웨어를 생산하는 방법 및 장치에 관한 것이다. 자카드 디자인에 따라, 그리고 편물기의 작업사이클에 따라 니들을 적절히 선택하여, 특정 영역에서의 스티치 줄을 분리하여 자동으로 프로그램함으로써, 적어도 하나의 완전한 개구(5,5a), 끈을 환경에 따라 단순웰트나 이중웰트로 형성할 수 있다. 끝으로, 본 발명은 현재의 절단작업이나 재봉작업에서 생기는 자투리를 완벽히 없앨 수 있다.
Patent KR-20020027301-A (KR)
IPC: C02F1/20
Filed: 2000-02-28
Abstract: 본 발명은 삼투막 탈가스기(108)를 통하여 세척용액과 처리유체를 통과시켜 산소가 없고 수소는 풍부한 세척용액을 이용하여 반도체장치(22)와 기타 다른 공작물을 세척하기 위한 방법과 장치(10)에 관한 것이다. 우선 실시형태에서, 산소를 제거하고 수소를 주입하는 두 기능을 제공토록 단일의 콤팩트한 형성가스가 사용된다.
Patent KR-20020023981-A (KR)
Inventor: CHOI JAE SEUNG
IPC: G06Q50/10
Filed: 2001-12-29
Abstract: PURPOSE: A method for managing a Chinese hall is provided to teach Chinese, to agent the formalities of entry and departure for Korean resident in China and to agent for an employment and marriage. CONSTITUTION: The lecture room for lecturing Chinese is formed as much as the number of attendant, one lecture room has 7-8 persons, and one Chinese lecturer takes 7-8 persons. A counselor for an employment and marriage has a counseling room of fixed space and a counseling sofa. The number of men taking charge of immigrant business is varied according to the business amount. For managing the Chinese hall, a total business manager and middle manager is needed.
Patent KR-20030059742-A (KR)
Inventor: SHIN OH BUM
IPC: B65H57/00
Filed: 2002-01-04
Abstract: PURPOSE: Threads are wound without vibration to prevent loss of the thread by the vibration, thereby improving productivity with high rotation and preventing damage to a spindle. CONSTITUTION: A spindle(111) is installed rotatably in a frame(110). A thread(119) is wound by a transverse bar(117) in outer circumference of the spindle. A spindle holder(130) is installed in an end of the spindle. An end of the spindle is fixed to a shaft hole of a bearing connected to an upper part of the spindle holder. The spindle holder is fixed to a shaft rod(115) supporting a cutting device(114).
Patent KR-20030061518-A (KR)
Inventor: LEE YEONG HO
IPC: H01J29/76
Filed: 2002-01-14
Abstract: PURPOSE: A deflection yoke is provided to allow the coma free to be easily coupled on the rear cover in a slide way. CONSTITUTION: A deflection yoke comprises a coil separator including a screen portion coupled to a screen of a CRT, a rear cover and a neck portion extended from the center of the rear cover and coupled to an electron gun of the CRT; a coma free(20) arranged on the rear cover of the coil separator, and which corrects a mis-convergence on the screen and includes a bobbin(22) wound with a coil(23) and a core(21) having an extended piece with an end inserted into the bobbin; and a slide coupling unit(30) formed integrally with the rear cover, and which permits the coma free to slide from outside of the rear cover to the neck portion and prevents the coma free from moving in an insertion direction. The slide coupling unit includes a pair of guide rails(31,32) protruded from the rear cover; a stopper(33) protruded from the rear cover at the position adjacent to the neck portion, and which contacts the front end of the bobbin so as to prevent the coma free from advancing toward the neck portion; and a hook(34) arranged outside of the guide rails, and which gets caught at the rear end of the bobbin so as to apply a support force.
Patent KR-20030061592-A (KR)
Title: Clean water machinery of the high density an oxygen
Inventor: CHO JUNG SEON
IPC: C02F1/74
Filed: 2002-01-15
Abstract: PURPOSE: A water dispenser of high concentration oxygen water is provided, which uses high efficiency dissolving technology utilizing miniaturized and noise eliminated oxygen generator and low pressure circulating motor pump. CONSTITUTION: In the water dispenser composed of a water purifying system consisting of a raw water feed line(2) and nonwoven fabric filter(3), a motor pump(4), a nonwoven fabric filter of activated carbon(5,5a) and a membrane separation filter(6), and a purified water storage tank(8) consisting of a storage tank influent line(8) and a storage tank, a cold water tank(12) and a hot water tank(13), comprised are a circulating pump(15) and oxygen dissolving device(16) installed on circulation line of the oxygen dissolving device(16) of the cold water tank; and an oxygen generator connected to the oxygen dissolving device(16) using buoyancy and pressure.
Patent KR-20020024095-A (KR)
Inventor: SON BYEONG DEOG
IPC: C04B33/04
Filed: 2002-01-25
Abstract: PURPOSE: Provided is a manufacturing method of far infrared emitting body by incomplete combustion of raw materials comprising yellow earth as a main material, quartz porphyry and saw dust of oak. Accordingly, the far infrared emitting body with an effect of charcoal is used for bowls and construction materials. CONSTITUTION: The manufacturing method is as follows: mixing 60wt.% of yellow earth, 35wt.% of quartz porphyry, 5wt.% of saw dust of oak, and water; forming into bowls and construction materials such as blocks, tiles, panels, etc.; drying; firing at 900-1300deg.C for 8-10hrs. under the condition blocking the inflow of air, which results in that the used saw dust of oak is completely charred.
Patent KR-20030068922-A (KR)
Title: Mortar for composition of concrete wall
Inventor: HONG YOUNG WAN
IPC: C04B28/16
Filed: 2002-02-19
Abstract: PURPOSE: A mortar for the basic background of concrete wall is provided, to allow the background of concrete to be made uniform rapidly by preventing the falling, coming off and set contracting of cement, thereby reducing the processing time and improving the productivity. CONSTITUTION: The mortar comprises 30-50 wt% of cement; 40-65 wt% of micro aggregate with a size of 0.6 mm or less; 2-7 wt% of a mixture comprising calcium sulfur aluminate-based cement, anhydrous gypsum and quick lime; 0.05-0.5 wt% of a moisturizing agent; 0.2-1.0 wt% of a re-emulsion-type powdered resin; 0.05-0.5 wt% of a dispersant; 0.05-0.5 wt% of an antifoaming agent; and 0.01-0.5 wt% of a fibroid admixture. Preferably the moisturizing agent is hydroxymethyl cellulose; and the re-emulsion-type powered resin is at least one selected from the group consisting of an acryl-based resin, a vinyl acetate-based resin, an ethylene-vinyl acetate-based resin and a synthetic rubber resin.
Patent KR-20030069553-A (KR)
Inventor: LEE JEONG HUN
IPC: H01L21/78
Filed: 2002-02-21
Abstract: PURPOSE: A method for cutting a semiconductor wafer is provided to prevent cracks from spreading by forming a guide groove on the edge of the wafer in a direction perpendicular to a cutting groove in a cutting process for separating devices from the wafer including a laser diode. CONSTITUTION: Guide grooves(33) are formed in a portion adjacent to fine cracks(31) scattered on the edge of the semiconductor wafer(30) in which a semiconductor laser diode is completed. The semiconductor wafer is cut in a direction perpendicular to the guide groove. The guide groove has a thickness not greater than 1/3 of the semiconductor wafer.