baber/WOPTO huggingface dataset:
Patent KR-20000035136-A (KR)
Title: Stirring device
Inventor: KAKINUMA HIROTAKA
IPC: B01F27/94
Filed: 1999-11-01
Abstract: PURPOSE: A stirring device is provided in which oil rising is prevented, and an adverse influence onto oil sealing bellows by a pressure rise accompanying the temperature rise of the crank chamber (26) is prevented. CONSTITUTION: Oil sealing bellows (53) are disposed between a space in a housing (23)and compression and expansion cylinders (45,46), and a buffer tank (59) provided with the pressure adjusting bellows (61) is disposed between a space (69,70) on the back surface side of the compression and expansion pistons (48,55) and the space in the housing (23), so that the pressure rise in the housing (23) and the pressure fluctuation of the space (69,70) are absorbed
Patent KR-20000012473-A (KR)
Inventor: KIM SEONG O
IPC: C11D13/28
Filed: 1999-12-07
Abstract: PURPOSE: A soap cased as usual in paper and plastic container is not easy to carry and apply at specific parts of body. CONSTITUTION: A soap stick contained in lipstick-like case moving up and down with revolving the main body or outer case is invented. The soap stick has many advantages such as carrying, keeping and applying at small parts of body. The soap stick is economical because of reducing unwanted applying and protecting it from destruction.
Patent KR-20010056753-A (KR)
Inventor: JUNG JONG MYEONG
IPC: G06Q50/30
Filed: 1999-12-16
Abstract: PURPOSE: A method for simulating a profit rate is provided to analyze a profit rate in accordance with an investment of a packet network, a frame relay network businessman and a charge structure in multi-dimensions. CONSTITUTION: In calculating of a charge structure profit rate with respect to a packet network and a frame relay network, the charge structure profit rate is classified by a charge structure of inputted data, a varied rate and the others discount rate. If the classification is an input data classification of a measured rate system, the classification is classified as an input data for calculating a profit of a measured rate system commodity, a charging kind is detected. A simulation result report is created by classifying the charging kind into a standard, a connection time and a transmitting quantity and calculating by a rate thereof in accordance with the above result and applying a rate according to an additional or extension services. If the classification is an input date of a fixed sum system, the classification is classified as input data for calculating a profit of a fixed sum system commodity. A calculating is performed by applying a rate in accordance with member contract contents after classifying input data and a profit simulation result report is created in accordance with an application or not of the additional or extension services.
Patent KR-20010063578-A (KR)
Title: Fan motor
Inventor: PARK YONG MYEON
IPC: H02K9/04
Filed: 1999-12-23
Abstract: PURPOSE: A fan motor is provided to reduce manufacturing cost by removing a necessity of using an expensive ball bearing, and improve efficiency in assembling. CONSTITUTION: An end part of a shaft(200) is press fit to a central surface of a blade(100). A wing piece(110) is formed on an outer side surface of a fan motor for ventilation. A magnet is fixedly installed on an inner surface of the blade(100). A bearing holder(300) is slide supported on an outer peripheral surface of the shaft(200) for no-load operation through upper and lower metal bearings(310,320). A housing(400) is coupled on an outer peripheral surface of the bearing holder(300). A coil(410) is disposed on an upper peripheral surface of the housing(400) to generate a rotary electromagnetic force along with the magnet of the blade(100). A latch jaw(420) is formed on the housing(400) and has a circuit board(500) being seated thereon to apply a power to the coil(410). A pressurizing ring(600) is forcibly inserted along the outer peripheral surface of the bearing holder(300) so as for the circuit board(500) to be firmly fixed to the latch jaw(420) of the housing.
Patent KR-20010061811-A (KR)
Inventor: CHOI JIN GU
IPC: H02K1/28
Filed: 1999-12-29
Abstract: PURPOSE: A method for manufacturing a servo motor rotor and the rotor are provided to attach each core on a surface without any adhesive, conveniently separate or assemble a bonded magnet, and prolong a life of the core. CONSTITUTION: An integral core(10) is formed in a mold and includes a through hole(14) and an insert space part(12). Under a state that a connection pin is inserted into the through hole(14) of each core(10), welding process is performed along an outside surface of the core and a laminating process is proceeded with. The insert space part(12) of the core has a latch jaw(12a) on an outside surface thereof and a V-shaped seating groove on an inside surface thereof. The latch jaw(12a) of the insert space part(12) serves to prevent a bonded magnet from being burst out in a circumferential direction when a rotor is rotated. A welding machine is used when the outside surface of the core(10) is welded. A plasma welder or a TIG welder is used as the welding machine.
Patent KR-20010064612-A (KR)
Inventor: CHUN U JIN
IPC: B60J5/04
Filed: 1999-12-29
Abstract: PURPOSE: Door checker install structure is provided to continuously apply synovia to a contact face between a roller and a checker arm and to prevent a noise generated by drying the synovia on the contact face. CONSTITUTION: A roller(100) is closely attached to a peripheral face of a checker arm(11) by an elastic member(103) fixing the roller while the roller is located on a thread of the checker arm. Thus, a push piston(105) is inserted to inside of a receive groove(103) to compress air in the receive groove by pumping. The compressed air is let in a synovia storage(101) through a first air through hole(106) to push back the synovia via a synovia-discharging hole(102) by pressurizing pressure to the synovia contained in the synovia storage. The synovia discharged from the storage flows down on the roller and the peripheral face of the checker arm for being applied to a contact face between the roller and the checker arm. Then, the push piston is protruded form the receive groove by repulsive force of the elastic member while the roller is located on a recessed portion. Thereby, the synovia is not counter flowed by preventing vacuum of the receive groove by letting the outer air in the receive groove via a second air through hole(107).
Patent KR-20010058982-A (KR)
Inventor: HAN SUNG SOO
IPC: G07F11/72
Filed: 1999-12-30
Abstract: PURPOSE: Provided is an apparatus for discharging gift certificates that is connected with a vending machine, which can promote selling of the machine by giving the certificate whenever buying goods from the vending machine. CONSTITUTION: The apparatus comprises a main body(10) fixed at one side of a vending machine and composed of a front cover(11) with an outlet port(12) and a rear cover opened and shut, a central wall dividing the inside of the body into a first and a second chambers(20,30), a first partition(21) dividing the inside of the first chamber up and down to place a controller(40) and a driving motor(41) separately, a switch(43) of which one end is electrically contacted with the controller and the other end is passed through the body and the inside of the vending machine to be operated by a discharged item from the vending machine, a second partition(31) dividing the inside of the first chamber up and down to place gift certificates at the top and a driving roller(50) operated by the motor and including an opened groove(63) at the top face, and a sensor placed in the second chamber for controlling the controller by sensing discharge of the gift certificate through the outlet port.
Patent KR-20010066273-A (KR)
Inventor: LEE GI HAK
IPC: H04B7/00
Filed: 1999-12-31
Abstract: PURPOSE: A distributed data processing apparatus and method is provided to enhance a data transmission or a modem efficiency by periodically receiving commands related with several information of previously set communication states in a data processing unit without the change of a mode and monitoring communication-related information through a PC monitoring system. CONSTITUTION: A modem(19) converts a digital data received from a data processing unit(20) into an analog data. A communication port unit(15) transmits and receives the analog data through the modem(19). A switching unit(16) connects the analog data of the communication port unit(15) with a communication channel. A control logic unit(14) senses an escape character from the modem(19) and transmits the sensed escape character to a command processor(13). The command processor(13) processes several commands connected with the modem(19) when the modem(19) is operated as a command mode.
Patent KR-20010066548-A (KR)
Inventor: LEE BYEONG JUN
IPC: B60T8/00
Filed: 1999-12-31
Abstract: PURPOSE: An automatic brake operating device is provided to automatically operate a brake pedal independently with a driver's will if an object is detected on the running direction of a vehicle when the vehicle runs at more than certain speed in rainy weather. CONSTITUTION: A brake operating device comprises an operating device, a hydraulic pressure generating device and a controller(ECU). The operating device is installed to a brake pedal(1) to forcedly rotate the brake pedal rotatably installed on a car body. The hydraulic pressure generating device applies hydraulic pressure to the operating device to activate the operating device. The controller has a car speed sensor(14), an object detecting sensor(16) and a rainfall detecting sensor(15) and applies a control signal to the hydraulic pressure generating device to generate hydraulic pressure if an object is detected on the running direction of a vehicle when the vehicle runs in more than certain speed in rainy weather.
Patent KR-20000068234-A (KR)
Title: 황화수소 및 다른 황 성분을 함유하는 기체내 총 황 함량을 감소시키는 방법
IPC: B01D53/86
Filed: 1997-08-21
Abstract: 본 발명은 하기를 포함하는, 황화수소 및 다른 황 성분을 함유하는 기체의 총 황 함량을 감소시키는 방법에 관한 것이다: 
     (a) 무정형 실리카-알루미나를 함유하는 담체상에 지지된 VIB 및 VIII 족에서 선택된 하나 이상의 금속 성분을 함유하는 수소화 촉매 존재 하에서 기체를 환원 기체와 접촉시킴, 
     (b) (a) 단계에서 수득한 기체의 적어도 일부를 황화 카르보닐의 가수분해를 촉매작용하여 황화수소를 형성할 수 있는 가수분해 촉매와 접촉시킴, 및 
     (c) (b) 단계에서 수득한 기체로부터 황화수소를 제거하여 총 황 함량이 감소된 생성 기체를 수득함.
Patent KR-20000052735-A (KR)
Title: Solid electrolytes containing toughening agents and electrolytic cells produced therefrom
Inventor: GOLOVIN MILTON NEAL
IPC: H01M4/62
Filed: 1997-10-20
Abstract: PURPOSE: A solid electrolyte is provided to improve a mechanical strength and adherence to the anode and cathode. CONSTITUTION: A solid electrolyte contains a polymeric matrix, a salt, a solvent, and a toughening agent. A toughening agent may include alumina, silica, zeolite, and metal oxides (e.g., calcium oxide and magnesium oxide), and mixtures thereof. The toughening agent acts as a drying agent to remove excess solvent in the electrolyte. The solid electrolytes have improved mechanical strength and adherence to the anode and cathode.
Patent KR-20000069510-A (KR)
Title: 다층/다수 심 프레스 직물의 심 완전성 개선
IPC: D03D13/00
Filed: 1998-04-03
Abstract: 온-머신-시머블 제지기 직물은 제1 베이스 직물과 제2 베이스직물을 포함하고, 그 각각은 심과 순환형태로 결합한다.  제 1 베이스 직물과 제2 베이스 직물은 적어도 한층의 짧은섬유솜에 의하여 상호 부착되어, 결합시 세로방향으로 서로에 대해 오프셋된다.  그 결과, 제1 베이스 직물의 하나의 가로방향 가장자리에 있는 시밍루프는 제2 베이스 직물의 비-심구역과 일치하고, 제2 베이스 직물의 하나의 가로방향 가장자리에 있는 시밍루프는 제1 베이스 직물의 비-심구역과 일치한다.  순환형태로 결합되는 경우에, 제1 베이스 직물은 외부 베이스 직물이고, 제2 베이스 직물은 내부 베이스 직물이다.  적어도 하나의 여분 교차기계방향(CD)실이 (a) 외부 베이스 직물의 적어도 하나의 가로방향 가장자리의 시밍루프의 외측 (b) 외부 베이스 직물의 적어도 하나의 가로방향 가장자리의 시밍루프의 내측 (c) 내부 베이스 직물의 적어도 하나의 가로방향 가장자리의 시밍루프의 외측 (d) 내부 베이스 직물의 적어도 하나의 가로방향 가장자리의 시밍루프의 내측 중의 적어도 두개와 직조된다.  향상된 심 완전성과 심구역에 의한 짧은섬유솜의 보유뿐만 아니라 종이장 오염의 감소는 여분 CD실의 포함으로 부터 비롯된다.
Patent KR-20000069611-A (KR)
Title: 수중 작동용 전기적 외과 수술 발생기 및 시스템
IPC: A61B18/14
Filed: 1997-12-17
Abstract: 전기 수술용 시스템에 무선 주파수 발생기가 제공되어 있다. 상기 시스템은 전기 전도성 액체에 침지되어 사용되는 두 개의 전극을 가진 전극 조립체를 포함한다. 상기 발생기는 소정의 임계 제한치에 도달한 피크 무선 주파수 출력 전압의 몇몇 사이클내에서 최소한 50%만큼 분배 무선 주파수 출력 전력을 급속히 감소시키는 제어 회로를 구비하고 있다. 이러한 방식으로, 조직 응고는 예를 들어 상당한 스팀발생없이 염수에서 행해진다. 동일 피크 전압 제한법이 전극 소실을 피하기 위해 그리고 전극에서 스팀 포켓의 크기를 제한하기 위해 조직 건조 또는 절개 모드에 사용된다. 상기 발생기는 직렬 공진 출력 회로를 구비한 푸시-풀 출력단을 구비하고 있고, 출력단은 일반적으로 상기 공진 출력 회로의 공진 주파수와 다른 주파수에서 무선 주파수 발진기에 의해 구동된다. 푸시-풀 출력쌍을 형성하는 스위칭 트랜지스터의 ON 시간를 가변함으로써, 그리고, 직렬 공진 출력 회로의 공진 주파수와 여기 주파수사이에서 이격된 주파수를 바꿈으로써, 전력 제어가 이루어진다. 대체 실시예에서, 두 개의 푸시-풀 쌍을 이용한 브리지 구조가 사용되고, 추가 전력 제어 변수; 개별 트랜지스터 쌍에서의 구동 신호의 상대적인 위상을 생성한다.
Patent KR-20000070435-A (KR)
Title: Removable protective film for plaster systems, in particular self-adhesive plaster systems, containing active substances
IPC: B32B27/10
Filed: 1998-01-03
Abstract: The invention relates to a removable protective film (3) for plaster systems, in particular self-adhesive plaster systems, containing active substances, characterized in that it consists of a laminate constituted by a paper layer (7) and an abhesively coated polyester film (8).
Patent KR-20010006533-A (KR)
IPC: H04J11/00
Filed: 1999-02-19
Abstract: 튜너(2)에서 수신한 OFDM 신호의 중간 주파신호에 승산기(3)와 승산기(4)로 반송파를 승산하여 베이스 밴드의 OFDM 신호를 생성한다. FFT회로(5)에서 상기 베이스 밴드의 OFDM신호를 FFT처리하며, 등화회로(13)의 제산회로(10)와 파이롯트 신호 추출회로(8)로 출력한다. 파이롯트 신호 추출회로(8)에서 추출된 파이로트 신호는, 보간필터(9)에 공급되며, 보간 처리되어 파이롯트 신호의 진폭성분과 위상성분이 제산회로(10)에 공급된다. 제산회로(10)는, FFT회로(5)로부터 입력된 신호를 보간필터(9)로부터 공급된 진폭과 위상으로 제산하며, 디맵핑 회로(11)로 출력한다. FFT 윈도우 회로(6)는, 승산기(3), 승산기(4)의 출력으로부터 가이드 인터벌의 길이를 검출하며, 검출신호를 제어회로(21)에 출력한다. 제어회로(21)는, 입력된 가이드 인터벌의 길이에 대응하여 보간필터(9)의 대역폭을 제어하는 것에 의해 노이즈에 의한 등화특성의 열화를 억제한다.
Patent KR-20010014326-A (KR)
Title: 방식도료 조성물
IPC: C09D157/02
Filed: 1999-05-13
Abstract: 에폭시수지(A), 경화제, 바람직하게는 아민계 경화제(B) 및 인덴류 함유율 60∼90중량%의 분해유 분류분을 페놀류의 공존하에 프리델-크라프트 촉매에 의해 중합하여 얻어지는, 페놀성 수산기를 1분자당 1.0개 미만 함유하는 방향족성 석유수지(C)를 배합하고, 상기 방향족성 석유수지(C)의 함유량을 에폭시수지 100중량부에 대하여 1∼500중량부로 하므로써, 타르를 포함하지 않고, 해수에 접촉하는 부위에 적용가능한 방식용의 에폭시 도료조성물을 얻는다.
Patent KR-20010073749-A (KR)
Title: Implemention method for reducing caculation in finite impulse response filter
Inventor: LEE CHAE GYEONG
IPC: H03H17/00
Filed: 2000-01-20
Abstract: PURPOSE: A method for manufacturing a finite impulse response filter by reducing the calculating amount thereof is provided to realize a finite impulse response filter unconcerned with numbers of taps and the coefficient decided according to the interference frequency and the ratio of noise to signal. CONSTITUTION: In the method for manufacturing the finite impulse response filter by reducing the calculating amount thereof, S1, S2, ADD1 and ADD2 are included. The tap coefficient about the input data is displayed with the binary display method. The input data are shifted as the multiple of 2 and the calculating amount is reduced by adding and subtracting the input data. For example, when the data by multiplying each coefficient are added, one S1 and the other S1 are added. When the added result, ADD1 is added with S2s and the result becomes ADD2.
Patent KR-20000024266-A (KR)
Inventor: HONG SUNG MIN
IPC: G06F3/02
Filed: 2000-02-02
Abstract: PURPOSE: A keyboard is provided to be capable of exchanging a key group having a different arrangement or a different function after separating a specific key group. CONSTITUTION: In a key module, a specific key board is separated from a computer keyboard which is composed of character keys, function keys and number keys, and a different key group is mounted instead of the separated key group. The key module is composed of a character key group, and are divided into two parts so as to be folded. The folded portion of the key module is coupled by a hinge, and the key module comprises an auxiliary plate(606) and a stopper(608). An inner groove(607) in which a protrusion portion(605) is inserted, is formed at the auxiliary plate(606). The stopper(608) is coupled with the protrusion portion(605) so that the protrusion portion(605) is inserted in the groove(607).
Patent KR-20010077795-A (KR)
Title: Get rid of red tide and daitomic and clean water, mud
Inventor: BANG DAE SAN
IPC: C02F1/52
Filed: 2000-02-08
Abstract: PURPOSE: An agent for inhibiting red tide of sea water and green algae of fresh water, purifying water quality and improving sea silt(soil) are provided, which removes spore of green algae, reduces P, N and S in water, prevents contamination of a nursery and improves the growth and quality of fish, shellfish, laver and brown seaweed by spreading the agent regularly. CONSTITUTION: The agent is manufactured by: (i) mixing 70 % of loess in limestone, 20 % of weathered feldspar and 10 % of pearlite; and (ii) heat-treating at a high temperature of 1500 deg. C for preparing fine powder.
Patent KR-20000024399-A (KR)
Inventor: KYUNG WON SEOK
IPC: G01N33/18
Filed: 2000-02-11
Abstract: PURPOSE: A signal device for discriminating irrigation timing of plant soil is to provide an irrigation checking device having an electronic signal function to discriminate rapidly whether the moisture maintaining level under the plant soil is appropriate. CONSTITUTION: In the exterior of a case, a moisture detection sensor axis(5,7), LED lamps(10,11) and a switch(2) are installed. Resistances for sensitivity adjustment(10,11), a switching component SCR(9), a light emitting diodes(3,4), NAND GATE IC/RC, an oscillator(17), a transistor(18) and a buzzer(19) are installed in the interior of the case. A resistance value is detected corresponding to a moisture level and has an effect on the switching component S.C.R to determine whether the moisture condition under the plant soil is appropriate, when the sensor axis(5,7) is inserted into the plant soil and the switch(2) is on.
Patent KR-20010077803-A (KR)
Title: The manufacturing process of Tomato Kimchi
Inventor: JUN KUN SIG
IPC: A23B7/10
Filed: 2000-02-15
Abstract: PURPOSE: A method for preparing a kind of kimchi by using tomato containing 95% of water and various kinds of vitamins and mineral is provided to serve a high quality fermented tomato kimchi promoting physical health. CONSTITUTION: The method is characterized by the following steps of: (i) cutting 1.12% of green onion, 2.45% of onion, 0.56% of dropwort and 0.56% of leek into a size of 2-3cm and mixing the cut vegetables with 0.56% of smashed garlic, 0.27% of sugar, 1.12% of powdered red pepper and 1.68% of salted seafood; (ii) cutting cleared tomato into a thickness of 5-6cm or 6-10 pieces and preserving the prepared tomato in salt for about 30min; (iii) dressing the cut and salted tomatoes with the assorted seasoning; and then (iv) aging the seasoned tomato at least 10deg.C for 72hrs.
Patent KR-20010081570-A (KR)
Title: Inspection system and method for radiation
Inventor: JU HYO NAM
IPC: G01N23/04
Filed: 2000-02-16
Abstract: PURPOSE: An X-ray examining system and a method thereof are provided to precisely and rapidly form a visual image, and to reduce cost. CONSTITUTION: To examine a material(3), an X-ray is generated from a scanning X-ray electronic tube(1) toward the material. The X-ray transmits the material to be formed on an upper surface of an image amplifying tube(5). The X-ray is transformed into a visual image for being formed on a visual image surface(6) at a lower surface of the image amplifying tube. Then, a control unit supplies a signal to a decoder to supply power to a transmitting area corresponding to the visual image. Thus, the image is formed on a CCD(Charge Coupled Device) camera(15). Herein, eight visual images are formed on the visual image surface. Therefore, eight transmitting areas are formed. Moreover, power is successively supplied to the transmitting areas to form the visual images on the CCD camera.
Patent KR-20010084202-A (KR)
Title: Novel cephem compounds and preparation thereof
Inventor: BAE AE NIM
IPC: C07D501/16
Filed: 2000-02-24
Abstract: PURPOSE: Provided is a cephem derivative which has broad range of antimicrobial activity. And its producing method is also provided. CONSTITUTION: The cephalosporin compounds represented by formula (1) and its pharmaceutically acceptable salts are produced. In the formula, R1 is hydrogen or an amine protecting group generally used in cephalosporin compounds; R2 is hydrogen or an oxim protecting group; R3 is hydrogen or a chloro group; R5 is hydrogen or an ester producing group, a salt producing atom or a carboxy protecting group; and R4 is ring substituent having Q group, in which Q is hydrogen, halogen, hydroxy, mercapto, cyano, carboxy, carboxylic acid ester, carbamoyloxymethyl, N,N-dimethylcarbamoyloxymethyl, carbamoyl, N,N-dimethylcarbamoyl, C1 to C4 alkyl, C1 to C4 alkyloxy, halogen substituted methyl, halogen substituted C1 to C4 alkyloxy, aryl or hetero ring substituent. The cephalosporin derivative of formula (1) is produced by reacting a compound of formula (7) with a compound of formula (8).
Patent KR-20000030647-A (KR)
Inventor: JUN CHANG GEUN
Filed: 2000-03-09
Abstract: PURPOSE: An internet advertising method selectively using on line and off line is provided to carry out an advertisement in the state of on line and off line by selecting the advertisement according to a user's taste. CONSTITUTION: A user connects with the homepage of an advertisement agency, and inputs various private data (1-3). The user downloads and installs a banner advertising window program and a desktop and screen saver advertising program from a server(4). Accessing the internet, the user downloads desktop screens and screen saver advertisements from the advertisement agency server, while banner advertisements are carried out(4-7). In the off-line state, the advertisements downloaded from the advertisement agency server are displayed on the desktop screen of the user's computer(8).
Patent KR-20000076934-A (KR)
Title: 칼라 음극선관
IPC: H01J29/48
Filed: 2000-03-23
Abstract: 전체 길이를 짧게 하여 모니터 장치를 소형으로 하면서, 또한 화면 전체에 걸쳐 포커스 특성이 우수한 칼라 음극선 관은, 
     형광면의 대각 치수(De)와 형광면 중앙으로부터 전자총의 주 렌즈부를 형성하는 집속 전극의 양극 전극과 대향하는 단부까지의 거리(Lg)의 비가 De/Lg 〉 1.5가 되는 관계를 갖고, 집속 전극 및 양극 전극의 수평 방향의 개구 치수가 네크부 외경의 68 % 이상인 단일 개구부를 설치하고, 전자 비임이 통과하는 관축 방향으로 상기 개구부의 단부면을 서로 대향시킨 전자총을 구비한다.
Patent KR-20010006863-A (KR)
Inventor: PEGLION JEAN-LOUIS
IPC: C07D409/12
Filed: 2000-03-24
Abstract: PURPOSE: To obtain the subject new compound containing a cis-ring connection acting as a strong serotonin retake inhibitor, useful for treating depression, fear spasm, etc. The compound is used as a tablet, etc., and the amount of the compound used is 0.5-50 mg/day. CONSTITUTION: The compound represented by formula(I), wherein R1 to R3 are each H, a halogen, a 1-6C alkyl or the like; R4 is H, a 1-6C alkyl or the like; R5 is an aryl or the like; n is an integer of 1 to 3 such as cis-3a-£(3,4-methylenedioxyphenoxy) methyl|-2,3,3a,7b-tetrahydro-1H-benzo£3,4|cyclobuta£1,2-c|pyrrole, is obtained by reacting a compound of formula (II) with sodium amide to give a compound of formula (III); treating the compound with an inorganic base; reacting the resultant compound with an acetal of N,N-dimethylformamide of the formula (CH3)2NCH(OG)2 to give an ester of formula IV; reducing the ester into an alcohol; and then reacting the alcohol with a compound of the formula R5-OH.
Patent KR-20010076135-A (KR)
Title: Ergonomic computer mouse
Inventor: LEE JONG HYUN
IPC: G06F3/0354
Filed: 2000-03-31
Abstract: PURPOSE: A mouse for computers is provided to give the convenience of manipulation by designing the structure of a mouse so as to be easily held by a user and to eliminate the plate to fix the mouse so that it can be used freely and conveniently. CONSTITUTION: A track ball(12) is diagonally installed in the front of a mouse body(11) on which a user s thumb is located as if the user is griping a gun. The first click switch(13a) and the second click switch(13b) are protruded and formed in the back of the mouse body(11) on which the index finger and the middle finger are located. The ring finger and the little finger are located in the lower part of the click switches(13a,13b) so that the mouse body(11) can be supported when the mouse body(11) is separated from a fixing plate. A concave part(14) is formed so that the mouse body(11) can be used freely, independently of the fixing plate.