baber/WOPTO huggingface dataset:
Patent KR-20010110740-A (KR)
IPC: G06Q20/10
Filed: 2000-04-13
Abstract: 한 당사자(매수자)로부터 다른 한 당사자 (매도자)로 자금을 이체함을 포함하는 개인간, 사업체간, 사업체와 개인간 그리고 개인과 서업체간 거래를 발생시키는 안전한 방법 및 시스템이 제공된다. 
     이 발병은 기존의 크레디트/데빗 카드의 기능 
     그리고 관련된 기반을 확장하여 
     비밀 정보를 드러내지 않고, 혹은 크레디트/데빗 허용 상인이 될 필요도 없이 개인/기업체가 자금을 수령할 수 있기 위해 안전한 글로벌 메카니즘을 제공하도록 한다.
Patent KR-20020007368-A (KR)
IPC: G11B20/14
Filed: 2001-02-14
Abstract: CD-ROM 드라이버와 같은 데이터 판독기의 디지털 오디오 컴팩트 디스크 상의 데이터를 억세스, 추출 또는 판독할 수 있는 능력은 음악 산업에 문제점을 안겨준다.  사용자는 그의 CD-ROM 드라이브를 사용하여 오디오 디스크에서 데이터를 읽어들인 후 그것을 컴퓨터 파일로 저장할 수 있고, 그 데이터 파일은 복사될 수 있다.  복사 방지를 위해서, CD 상의 데이터에 에러가 섬세하게 유도되지만, 이러한 에러는 일반적으로 오디오 재생기에는 명백하지만 데이터 판독기에 의한 오디오 데이터의 판독에는 문제를 일으키게 된다.  표준에 따라서, CD 상의 데이터는 EFM(eight to fourteen modulation)에 의해 프레임으로 인코딩된다.  각 프레임은 동기화 데이터, 제어 및 디스플레이 심볼을 제공하는 하위 비트, 데이터 비트 및 패리티 비트를 가지며, CD-DA에 대한 오디오 데이터인 24바이트의 데이터를 포함한다.  상기 기준은 98개의 그러한 프레임인 하나의 섹터로 그룹화될 것을 요구한다.  복사 방지를 위해, 각 섹터에는 비표준수의 프레임이 제공되며, 예컨대 98 프레임이 아닌 99개의 프레임이 제공된다.  상기 S0 및 S1 하위-코드 동기화 패턴은 다른 경우라면 배치될 위치보다 한 프레임 늦춰져 배치되지만, 각 프레임 내의 데이터는 동일하다.  오디오 재생기는 부정확한 시간 디스플레이이긴 하지만, 상기 섹터의 각 프레임으로부터의 24 바이트의 데이터를 4바이트 샘플로 분할하고 디스크의 재생을 계속할 것이다.  그러나, 복사본을 만들어낼 수 있기 위한 CD-DA로부터의 오디오 데이터를 판독하는데 사용되는 데이터 판독기는 저하된 품질의 사운드를 갖는 복사본을 발생시킬 것이다.
Patent KR-20020026163-A (KR)
IPC: B41M5/24
Filed: 2000-05-12
Abstract: 실질적으로 투명한 전극 조립체의 제조에 유용한 애블레이션 가능한 박막 이미지 매체가 개시되어 있다.  박막 이미지 매체는 기판, 고굴절율 금속 산화층, 애블레이션 가능한 금속 도전층, 고굴절율 도전성 금속 산화층 및 애블레이션 보강층을 구비한다.  애블레이션 보강층은 고굴절율 도전성 금속 산화층에 비해 IR 흡수율은 높고 IR 반사율은 낮다.  박막 기록 매체에 애블레이션 보강층을 구비함으로써 매체의 노출 임계값을 낮추고 애블레이션 정확성을 높이게 되는데, 낮은 임계값과 높은 애블레이션 정확성에 의해 LCD 전극 패턴의 제조의 경우, 종합적으로 그리고 최종적으로 바람직하지 않은 전기적 "단락"이 생길 가능성을 없애고 더 신뢰성 있게 형성된 전기적 구조를 얻을 수 있다.
Patent KR-20020033446-A (KR)
IPC: G01N23/225
Filed: 2000-05-12
Abstract: 본 발명은 샘플 재료 구성의 신속한 묘사를 위한 시스템 및 방법에 관한 것이며, 이는 반도체 제조에 특히 유용하다.  재료 구성은 샘플로부터 방사하는 2차 전자를 분석함으로서 묘사될 수 있다.  일특징에 따르면, 전자 검출기는 샘플로부터 방사하는 2차 전자를 검출하는데 사용된다.  검출기는 2차 전자의 특정 협대역을 검출하기 위해 제어되며, 대역은 상이한 에너지로 SE를 검출하도록 제어된다.  두가지모드, 즉 스폿 모드 및 2차 전자 분광 재료 영상법이 개시된다: 스롯 모드에서, SE의 스펙트럼이 샘플에 대한 단일 스폿으로 얻어지며, 이러한 특성은 스폿의 재료 구성의 정보를 얻기 위해 조사된다.  SESMI 모드에서, 샘플 상의 영역의 SEM 영상이 얻어진다.  각 픽셀에서 SE 스펙트럼이 조사되며 특정 스펙트럼 그룹과 관련된다.  이어 영상은 SE 스펙트럼 그룹에 따라 코딩된다.  이 코딩은 바람직하게 컬러코딩이다.
Patent KR-20020040665-A (KR)
Title: Subtilase enzymes of the i-s1 and i-s2 sub-groups having at least one additional amino acid residue between positions 97 and 98
IPC: C12N1/21
Filed: 2000-05-10
Abstract: Subtilase enzymes of the I-S1 and I-S2 sub-groups having an additional amino acid residue in position 97 of the active site loop (b) region from positions 95 to 103. Variant subtilases exhibit improved wash performance in a detergent in comparison to its parent enzyme.
Patent KR-20030060204-A (KR)
Inventor: HUH GYU DAE
IPC: H02B13/035
Filed: 2002-01-07
Abstract: PURPOSE: A motor spring driving apparatus is provided to reduce a cost through a simple constitution and to improve a quality by preventing an oil from being leaked. CONSTITUTION: A closing spring(10) is pressed by a motor(5), and a closing latch(7) maintains the closing spring at a suppressed state. A crank shaft(12) is rotated by expansion of the closing spring, and a disk cam(13) is rotated by the crank shaft(12). A tripping plate(8) is rotated by the disk cam(13), and a tripping shaft(23) is connected to the tripping plate(8). An opening arm(17) is operated by rotation of the tripping shaft(23), and a driving lever(22) maintains a breaker at a closing state. An opening latch(6) makes the opening spring(18) compressed and expanded. An auxiliary switch(19) protects the closing coil and a trip coil.
Patent KR-20020064174-A (KR)
Inventor: HIRABAYASHI SHIGEFUMI
IPC: B60S5/00
Filed: 2002-01-29
Abstract: PURPOSE: To provide a remote failure diagnostic system of a vehicle, a server, a remote failure diagnostic method, a program for executing remote failure diagnosis, or the like. CONSTITUTION: In this remote failure diagnostic system of the vehicle 1, the server 6 has a first database 20 for housing user information including personal data of each user and vehicle data held by each user, a second database 22 for housing information classified by car models including dissatisfaction and deficiency classified by the car models from users of the car models, a third database 26 for housing the diagnostic program for executing failure diagnosis of the vehicle, and a diagnostic program transmission means for transmitting, through a network 28, the failure diagnostic program to the vehicle of a user whose user information is housed in the first database, and the vehicle has a requiring means for requiring the diagnostic program to the server, a diagnostic program reception means for receiving the diagnostic program, and an inspection means for inspecting the vehicle by the received diagnostic program to acquire an inspection result.
Patent KR-20020070783-A (KR)
Title: Purified developer producing equipment and method
Inventor: HOZAN TAKAHIRO
IPC: B01F3/08
Filed: 2002-02-06
Abstract: PURPOSE: A purified developer producing equipment and a purified developer producing method which make it possible to produce a developer with a specified concentration quickly and with good precision from a developer stock solution on the use side, and which make it possible to control the composition and concentration of the developer thus produced with good precision are provided. CONSTITUTION: In a purified developer producing equipment which is connected via piping to working equipment in which electronic circuits on which fine working is performed are formed, and which produces an alkali type developer used in the working equipment, the purified developer producing equipment(100) comprises a preparation tank(105) to which a developer stock solution and pure water are supplied, and in which these ingredients are agitated so that the alkali type developer is prepared; first alkali concentration measuring means(106) for measuring the alkali concentration of the alkali type developer inside the preparation tank; liquid supply control means(107) for adjusting at least either the amount of the developer stock solution that is supplied to the preparation tank or the amount of the pure water that is supplied to the preparation tank, on the basis of the measured value obtained by the first alkali concentration measuring means; a leveling tank(108) to which the alkali type developer is supplied from the preparation tank, and which evens out the alkali concentration of the alkali type developer; and liquid feed/liquid surface level control means for feeding the alkali type developer into the leveling tank from the preparation tank, thus adjusting the liquid surface level of the alkali type developer in the preparation tank and the liquid surface level of the alkali type developer in the leveling tank.
Patent KR-20030068017-A (KR)
Title: High tension hollow fiber membrane, and method of manufacture the same
Inventor: PARK HUN HWEE
IPC: B01D69/08
Filed: 2002-02-09
Abstract: PURPOSE: A high tensile strength hollow fiber membrane reinforced with fibrous support is provided which increases tensile strength by forming the support of fibrous material and increases permeable water amount by controlling thickness of hardened polymer membrane, and a method for manufacture the same is provided. CONSTITUTION: The high tensile strength hollow fiber membrane(14) is characterized in that the outer surface of the fibrous support(11) is coated with the polymer solution by passing a fibrous support as hollow fiber membrane through coating vat(12) containing polymer solution(5), wherein the fibrous support is formed of wick fiber of hollow fiber, wherein the polymer solution for coating is polyvinylidene fluoride, polyethersulfone, polyacrylonitrite, polysulfone, or polyvinylchloride, wherein the wick fiber is polyester, polystyrene, polypropylene, nylon, natural cotton, or glass fiber, wherein the wick fibrous support has tensile strength of 12,00 to 18,000 kgf/cm¬2, wherein pore size of the hollow fiber membrane is 0.1 to 1.0 μm, and wherein permeable water amount of the polymer solution coated fibrous support membrane has 20 to 30 liters/m¬2·hr in wastewater and 900 to 1,300 liters/m¬2·hr in clean water. The method for manufacture the high tensile strength hollow fiber membrane(14) comprises the steps of drying the dipped and washed fibrous support at a temperature of 40 to 60 deg.C after dipping and washing a fibrous support used as wick in water tank of an ordinary temperature; coating the polymer solution on the outer surface of hollow fibrous support by passing the fibrous support through coating vat(12) containing polymer solution; winding the coated hollow fiber membrane on coiling type roller; and drying the hollow fiber membrane dipped into the water bath after dipping the manufactured hollow fiber membrane into a water bath having ordinary temperature.
Patent KR-20020026906-A (KR)
Inventor: SON YOUNG SUK
IPC: A23L1/00
Filed: 2002-02-26
Abstract: PURPOSE: Provided is a cuisine containing pharmacological components by using medicinal herbs, seaweeds, animals, plants, healthy foods or mush rooms. Particularly, the pharmacological components are extracted from therefrom then fermented naturally. And the fermentates are added into food ingredients. CONSTITUTION: The manufacturing a cuisine containing pharmacological components is characterized by processing saccharification or fermentation with adding medicinal herbs, plants(roots, fruits, stems, leaves), animals, seaweeds, minerals, or other healthy foods which have pharmacological components and are specifically described as in the description.
Patent KR-20020096857-A (KR)
Inventor: CHOI BYEONG HO
IPC: G11B7/007
Filed: 2002-03-15
Abstract: PURPOSE: An optical recording medium is provided to make all areas of a first layer having structures under the same condition at a multi-layer optical recording medium, thereby preventing deterioration of write and/or read caused by a difference of transmittance at the first layer. CONSTITUTION: An optical recording medium includes a lead-in area(100), a user data area(120) and a lead-out area(130); wherein the lead-in area, the user data area and the lead-out area are formed of grooves(123) and lands(125); wobbles(105,135) are formed at the one side of the groove and the land, wherein wobble characteristic of the lead-out area is different from wobble characteristic of the user data area to prevent an optical pickup from leaving a data area in writing and/read data at the lead-out area.
Patent KR-20020029032-A (KR)
Inventor: SON YOUNG SUK
IPC: A61L9/015
Filed: 2002-03-25
Abstract: PURPOSE: A high tech digital multi-functional melody and perfume generating apparatus is provided to improve the convenience of use by offering various functions, thus to improve the value of a product. CONSTITUTION: The high tech digital multi-functional melody and perfume generating apparatus(1) comprises an electronic circuit computer chip(1'), a perfume generator(2'), a microchip(6'), a perfume material reservoir(2), a grain separation vessel(35'), a lighting(39), an ultrasonic skin controller(3'), a perfume input/output button(9), a plug(5) and a socket(5'), an inner power source(4), a TV chip(32"), an electro-card chip(37'), a bell(23'), a TV(32'), an alarm(6), an operating circuit controller(8), and so on.
Patent KR-20030077837-A (KR)
Title: Cryo pump for manufacturing semiconductor
Inventor: KIM HAN SEONG
IPC: H01L21/02
Filed: 2002-03-27
Abstract: PURPOSE: A cryo pump for manufacturing a semiconductor device is provided to be capable of breaking contaminated gas from being re-flowed into the cryo pump and uniformly supplying purge gas by using a ring type purge guide. CONSTITUTION: A cryo pump(200) is provided with a pump case(210) installed with an air exhaust pipe, an inner barrel(220) having a purge gas inflow port(222), installed in the pump case, a gas condensation part installed at the inner barrel for condensing and adsorbing gas molecules, a cooling unit(230) for cooling the gas condensation part to a cryogenic state, and a recycling part for removing the condensed gas molecules by supplying purge gas(70) to the purge gas inflow port. At this time, the recycling part includes a purge gas supply unit(282) for supplying the purge gas, a purge gas supply pipe(284) connected with the purge gas supply unit for flowing the purge gas, and a purge gas nozzle unit. Preferably, a purge guide(226) is installed at the bottom portion of the inner barrel for uniformly flowing the purge gas into the inner barrel.
Patent KR-20020030067-A (KR)
Inventor: KIM DONG SUNG
IPC: C04B14/22
Filed: 2002-04-04
Abstract: PURPOSE: A manufacturing method of decorative blocks is provided to express patterns, save manufacturing costs and prevent environmental pollution by using waste glass. The resultant blocks used for interior finishing materials and pavement blocks have good strength and easy drainage in raining. CONSTITUTION: The decorative block(50) comprising a block body(30), and a pattern layer(20) is manufactured by the following steps: mixing ground glass, waste glass, with a binder, glue, in a weight ratio of 80:20; spreading ground glass on the bottom of the mold in a certain pattern and color; pouring the mixture of glass and binder into the mold; pressing to attach the ground glass forming a pattern to the mixture; polishing on the surface of the pattern layer for interior bottom materials or coating it with a waterproof agent for interior wall materials.
Patent KR-20030080482-A (KR)
Title: door latch dead-lock control system in vehicle
Inventor: MOK MU GYUN
IPC: E05B49/00
Filed: 2002-04-09
Abstract: PURPOSE: A vehicle door latch dead lock control apparatus is provided, which enables door dead lock state not to be released by an artificial operation from the external with low cost using a shape memory alloy. CONSTITUTION: A dead lock apparatus of a door latch comprises an open lever(110-3) which is located at a fixed position of a control lever(110) and is operated by a remote control input signal. The open lever is operated by locking or unlocking the door dead lock state by a shape memory alloy spring(110-8) whose shape is changed according to temperature variation. And the open lever is combined to a fixed center position of the control lever by a hinge connection member.
Patent KR-20030081817-A (KR)
Title: Smart card management apparatus and method to use wireless communication network
Inventor: PARK SIN YEONG
IPC: G06K17/00
Filed: 2002-04-13
Abstract: PURPOSE: A smart card management system and method is provided to manage applications and data, stored at a smart card, in real time at a remote place by using a mobile terminal over a wireless network. CONSTITUTION: The system comprises a smart card management data generation server(10), a smart card management database(40), a smart card management server(30), a mobile terminal(50) and a smart card(60). The smart card management data generation server(10), in association with a member management database(20), generates applications or data to be embedded on the smart card. The smart card management server(30) combines the generated applications or data with a member identification code, searches for an identification code of a smart card(60) owned by the corresponding member in the smart card management database(40), downloads the applications or the data to the mobile terminal(50), including the smart card, over the wireless network, receives download confirmation message from the mobile terminal(50), and updates the smart card management database(40).
Patent KR-20030085152-A (KR)
Title: An apparatus for maintaining the accuracy of a roll neck part
Inventor: HAN SANG BIN
IPC: B21B28/00
Filed: 2002-04-29
Abstract: PURPOSE: An apparatus for constantly maintaining accuracy of neck part of roll by removing sticker phenomena due to scratches generated on the neck part of the roll and corrosion of lubricant is provided. CONSTITUTION: The apparatus comprises a piler on the upper part of which rolling roll(10) is rotationally rested; a cylindrical drum(30) which is back and forth movably installed at both sides of the piler so that the neck part(10a) of the rolling roll(10) enters and leaves the cylindrical drum(30); a moving block(50) vertically and horizontally installed inside the cylindrical drum(30) and moved to the side of the roll neck part(10a) as adjusting means(40) connected to the outer wall of the cylindrical drum(30); and a plurality of cylindrical stones(70) rotationally installed at the lower side of the moving block(50) to grind the roll neck part(10a) rotationally approaching the inside of the cylindrical drum(30), wherein the cylindrical drum(30) comprises drum body(30a), supporting plate(30b) and cover plate(30d), the center of the body and respective plates is opened for coming and going of the roll neck part(10a), and wherein the adjusting means(40) comprises adjusting block(42) and support(44).
Patent KR-20030085983-A (KR)
Title: Herb Extract which has synergistic apoptosis-inducing effect in combination with anticancer drugs
Inventor: MUN GU
IPC: A61P35/00
Filed: 2002-05-03
Abstract: PURPOSE: A mixed herbal extract having a synergistic apoptosis-inducing effect when administered together with doxorubicin is provided. The extract increases expression of Fas/Fas-L systems, activates caspase-3, fragments PARP, increases expression of Bax, inhibits activity of gene transcription factor AP-1 and NF-kB and activates JNK in Fas receptor expressing cancer cells to induce apoptosis. CONSTITUTION: A mixed herbal extract of 12g of Ginseng Radix, 12g of Polia, 12g of Rhizoma rehmanniae, 12g of Amydae Carapax, 12g of Manitis Squama, 10g of Atractylodis Rhizoma Alba, 10g of Angelicae Gigantis Radix, 10g of Paeoniae Radix rubra, 10g of Scirpi Rhizoma, Zedoariae Rhizoma, 10g of Cyperi Rhizoma, Mastrix, 9g of Cnidii Rhizoma and 6g of Glycyrrhizae Radix has a synergistic apoptosis-inducing effect when administered together with an anticancer agent in Fas expressing cancer cell. The cancer cells are selected from the group consisting of Chang cell lines and HL-60 cell lines.
Patent KR-20030089219-A (KR)
Title: Discharged water treatment method
Inventor: LEE HO SANG
IPC: C02F9/04
Filed: 2002-05-17
Abstract: PURPOSE: Provided is an effluent water treatment method being capable of stably eliminating suspended solids, bacteria, virus, dissolved solids, ions, nutrients, stench, and color from effluent water of a wastewater treatment system. CONSTITUTION: The method comprises the steps of taking raw water from a sewer outlet of a wastewater treatment plant, oxidizing the raw water using ozone in an ozone contact reactor(2), transporting the ozone treated water to a coagulation tank(3) and feeding coagulant into the water to form floc, settling the floc in a settling tank(4), filtering the decant water of the settling tank(4), adsorbing impurities in the filtrate, sterilizing the impurities-eliminated water using chlorine, concentrating the sludge from the settling tank(4) using a sludge thickener(7), dehydrating the concentrated sludge, thereby producing sludge cake, and returning the decant water of the sludge thickener(7) and dehydration filtrate to the coagulation tank(3).
Patent KR-20030089324-A (KR)
Title: Broadcast control channel structure and cell selection method
Inventor: KIM JIN HUN
IPC: H04B7/26
Filed: 2002-05-17
Abstract: PURPOSE: A BCCH(Broadcast Control Channel) structure is provided to have an FCCH(Frequency Correction Channel) pattern and an SCH(Synchronization Channel) pattern in one time slot, and to simultaneously demodulate the FCCH pattern and the SCH pattern, thereby reducing operation time of a terminal. CONSTITUTION: Both an FCCH bit pattern(230) and an SCH bit pattern(240) are configured on every time slot(220) disposed on each frame(210) forming a forward BCCH. The FCCH bit pattern(230) and the SCH bit pattern(240) are simultaneously demodulated when measuring receiving power by receiving the BCCH from each cell. A connection is attempted, based on corresponding demodulation information for the cells after selecting the cells in reference to the measured receiving power.
Patent KR-20030001244-A (KR)
Title: A method of producing liquid crystal display panels
Inventor: WAKAYAMA HARUO
IPC: G02F1/1335
Filed: 2002-05-22
Abstract: PURPOSE: To provide a manufacturing method for a liquid crystal display panel having no problem even when the size of a glass substrate and the polarization direction are changed. CONSTITUTION: A polarizing plate roll body 10 formed by winding a belt like polarizing plate sheet 11 whose polarization direction is formed in a prescribed direction in a roll-shape is prepared. The polarizing plate sheet 11 is sent out from the polarizing plate roll body 10 and the polarizing plate sheet 11 which is sent out is punched in a prescribed quadrangular shape in such a manner that the polarization direction coincides with a prescribed direction to the quadrangular shape and then the punched polarizing plate sheet 11 is stuck to the glass substrate.
Patent KR-20030091360-A (KR)
IPC: F04B27/14
Filed: 2002-05-27
Abstract: 용량제어밸브는, 압축기의 용량을 변경할 수 있는 압축기의 크랭크실 내의 압력을 조정한다.  제어밸브의 감압실에는 흡입압력이 도입된다.  다이어프램은, 감압실 내의 흡입압력에 따라서, 로드를 통하여 밸브체를 작동시킨다.  받이 시트는, 다이어프램을 끼워서 로드의 반대측에 배치되어 있다.  받이 시트에는 위치결정 볼록부가 설치되고, 로드의 상단면에는 위치결정 오목부가 형성되어 있다.  위치결정 볼복부가 위치결정 오목부에 걸어맞춤되도록, 받이 시트 및 로드가 다이어프램을 끼워 유지한다.  그 때문에, 받이 시트는 다이어프램 및 로드에 대하여 확실하게 위치결정된다.
Patent KR-20030092878-A (KR)
Title: Lamp unit and method for assembling thereof
Inventor: CHO CHUN HYEON
IPC: G02F1/13357
Filed: 2002-05-31
Abstract: PURPOSE: A lamp unit and a method for assembling the same are provided to prevent lead poisoning of workers and remove environmental pollution without using lead connecting a lamp with a lamp wire. CONSTITUTION: A lamp(210) has a lamp tube filled with discharge gas for generating light and lamp leads(211) installed at both ends for supplying power to the discharge gas. A lamp wire(220) is connected to the lamp leads for supplying power to the lamp. A clip(230), which is a connecting member, contains the lamp leads and the lamp wire in an inner space, and is compressed by a compressing element for electrically connecting the lamp leads with the lamp wire.
Patent KR-20020059276-A (KR)
Inventor: SEOK CHUL MIN
IPC: A01K91/08
Filed: 2002-05-31
Abstract: PURPOSE: A body rotating angle penetrating method of fishing rod comb holes and manufacturing tools thereof are provided to extend the life of use of the fishing rod and to accurately fabricate a large amount of the fishing rod according to a predetermined standard. CONSTITUTION: In the method for forming a comb hole member on the fishing rod, the comb hole member is able to penetrate through a hole of a body while freely adjusting its insertion length and angle with a protractor needle of a body vise and a body protractor(5) of a shelf(1) without heating a body of the fishing rod itself or applying any physical force thereto. In addition, a drill point is used to successively increase a distance between certain combs so as to increase a length and an angle of the body, thus offering a torsion angle to the body.
Patent KR-20030095893-A (KR)
Title: Pharmaceutical composition for inhibiting phosphoserine phosphatase activity comprising an amino-tetrahydro-benzo[b]thiopene-3-carboxylic acid derivative
Inventor: CHO JUNG MYEONG
IPC: A61P25/28
Filed: 2002-06-15
Abstract: PURPOSE: Provided is a pharmaceutical composition comprising an amino-tetrahydro-benzo£b|thiopen-3-carboxylic acid derivative of the formula(1) for the inhibition of phosphoserine phosphatase(PSP) activity. Therefore, it is useful for the prevention and treatment of dementia and as a PSP inhibitor. CONSTITUTION: A pharmaceutical composition for the inhibition of phosphoserine phosphatase(PSP) activity is characterized by comprising an amino-tetrahydro-benzo£b|thiopen-3-carboxylic acid derivative of the formula(1), its pharmaceutically acceptable slat, hydrate, solvate or isomer, as an active ingredient. In the formula, X is CH2, O, S or NH; and R1 and R2 are individually hydrogen; linear or branched C1-C7 alkyl; or a hydroxy, halogen, alkyloxy, alkyl, amino, alkylamino, carboxylic acid or amide substituted or unsubstituted aromatic group.