baber/WOPTO huggingface dataset:
Patent KR-20030023896-A (KR)
Title: a
Inventor: CHO HYEON TAEK
IPC: B07B1/18
Filed: 2001-09-14
Abstract: PURPOSE: Provided is a selector for wastes on site which selects the wastes by four steps as size continuously and recycles them so that it increases convenience in selecting the wastes. CONSTITUTION: The selector for the wastes on site comprises the parts of: a supply part(1) which supplies the wastes for a rotation drum(6) repeatedly; a first selection part(2) which sends the wastes released through a first release hole(20) with 35mm in size along a first guide sheet(23) and a guide bar(24) and collects them at the lower side to select them through a first release belt(22); a second selection part(3) which sends the wastes released through a second release hole(30) with 65mm in size along a second guide sheet(31) and collects them at one place to select them through a second release belt(32); a third selection part(4) which sends the wastes released through a third release hole(40) with 95mm in size along a third guide sheet(41) and collects them at one place to select them through a third release belt(42); and a release hole(5) which is placed at rear side of the third selection part to release the wastes with over 95mm in size through a release part(50) and select them.
Patent KR-20030026557-A (KR)
Title: Gasoline direct injection
Inventor: YOO CHEOL HO
IPC: F02B23/10
Filed: 2001-09-26
Abstract: PURPOSE: A gasoline direct injection type engine is provided to achieve improved fuel efficiency and engine output by strengthening tumble flow of the air introduced into the combustion chamber. CONSTITUTION: A gasoline direct injection type engine comprises a combustion chamber formed with a cylinder head bottom surface and a piston top surface; intake and exhaust valves disposed at intake and exhaust ports; an ignition plug disposed at the bottom surface of the cylinder head arranged in the combustion chamber; and a fuel injector for directly injecting fuel into the combustion chamber. The combustion chamber is formed among an intake valve side inclined surface, bottom surface of the cylinder head, an intake valve side inclined top surface(32) corresponding to the intake valve side inclined surface and exhaust valve side inclined surface, and a piston top surface formed into a pent roof shape by an exhaust valve side inclined top surface. A bowl(40) is formed at a protrusion(38) formed with the intake valve side inclined top surface and the exhaust valve side inclined top surface of a piston(8). An intake port has an upper flow channel formed within a tumble flow channel and a lower flow channel which is open/shut by the control of an engine control unit.
Patent KR-20010112135-A (KR)
Title: 침대용 보조기능 장치
Inventor: JUNG HEUNG SIK
IPC: A47C21/00
Filed: 2001-09-27
Abstract: 본 발명은 부부 생활에 사용하는 통상의 침대에 부설하여 해먹 기능 및 부부 성생활 기능향상에 기여 할 수 있게 한 침대용 보조기능 장치에 관한 것이다. 
     통상 사용되고 있는 부부용 침대는 이의 기능이 부부 성생활 장소 및 안락한 수면을 제공하는 데 불과하였던 것이다. 
     그러나 그간 금기 상태로 되어 있었던 성문화가 개방됨에 따라 부부간의 이혼율은 날로 높아가고 있고 이의 원인의 대부분은 부부 성생활의 불만족에 기인하고 있는 것이다. 이와 같은 문제점에 있어서 그간 학계의 연구 결과에 따르면 성생활에 있어 남성의 경우는 체질이 강하기 때문에 능동적이고 적극적인 반면 여성의 경우는 체질이 연약하기 때문에 소극적이고 피동적인 것으로부터 성적 불만족 현상이 야기 되고 있다는 것이다. 그리고 이와 같은 문제점을 극복하기 위하여 대 다수의 여성들은 체력 증강을 위하여 스테미너 음식 습취에 취중한 나머지 영양분의 과습취로 비만증만 양산하고 있는 실정인 것이다. 
     본 발명은 이상의 문제점을 해결하고자 발명 한 것으로 이의 발명요지는  통상의 부부용 침대에 바로 설치 할수 있게 좌우 받침간(1)의 중간부 및  앞측에 힌지부(1-1)를 설치하여 이에 유압실린더(2-1)(4-1)를 개재한 기둥간(2)과 하부 버팀간(4)을 절첩가능하게 연결하고 기둥간(2)의 상단에는 걸림턱(2-3)과 체결부(2-2)를 형성하여 걸림턱(2-3)에는 공중 침대 구실 및 어린이 들의 요람이 될수 있는 해먹(Hammock)(7)의 걸고리(7-1)를 걸수 있게하고 체결부(2-2)에는 상부버팀간(5)을 연결하되 이 상부 버팀간(5)의 중간부에는 협지부(5-1)와 협지간(5-2)을 설치하여 고정구(5-3)로서 협지간(5-2)을 고정 할 수 있게 한 것으로 이를 성생활 기능 보조구로 사용할때는  그네몸체(6)에 연결된 지지밴드(6-3)를 전기한 협지부(5-1)에 걸림되게 한 후 협지간(5-2) 및 고정구(5-3)로서 지지밴드(6-3)를 고정하여 그네몸체(6)가 흔들운동되게하면 되는 것으로 이때에는 지지밴드(6-3)와 연결된 좌대(6-1)의 전후 측에는 좌우로 비교적 큰 끼움구멍(6-2)과 조임끈(6-5) 및 받침대(6-6)와 요입부(6-7)가 형성되어 있는 것으로 이를 실시할때는 좌대(6-1)에 걸쳐앉은 상태에서  끼움구멍(6-2)에 좌우 넙적 다리를 끼우면 능동적인 성교 자세가 되어지기 때문에 이와 같은 자세에서 그네몸체(6)를 손에 잡고 흔들 운동을 하게 되면 연약한 체질을 가진 여성(B)의 경우에도 체력의 과소모 없이 능동적이고 원만한 성교 행위를 가능케 한 것이다.
Patent KR-20030028299-A (KR)
Title: Interface apparatus using ether-net device
Inventor: AHN JUNG GYU
IPC: H04L12/413
Filed: 2001-09-29
Abstract: PURPOSE: An interface apparatus in an equipment using an Ethernet is provided to provided to perform the Ethernet and an IPC(Inter-Processor Communication) process efficiently without using a universal socket. CONSTITUTION: A registration function(134) receives directly a registration request from an application program and performs registration of a requested program. A cancel function(133) receives directly a cancel request from an application program and performs a cancel of a requested program. A delivery function(135) delivers data received from the Ethernet to corresponding application programs. A transmission function(136) performs a change of data being transmitted from the application program to the Ethernet. An Ethernet management function(132) controls a transition to an active state or a waiting state of duplex Ethernet drivers. A queue buffer(137) stores data for transmitting/receiving to the Ethernet drives of data. A control structure body(131) performs a control of registration and a cancel of application programs, management of the Ethernet drivers and a queue buffer.
Patent KR-20020031074-A (KR)
Title: Plating bath
Inventor: BAYES MARTIN W
IPC: H01L21/768
Filed: 2001-10-19
Abstract: PURPOSE: An electroplating bath for repairing seed layers by filling apertures prior to metallization is provided. CONSTITUTION: The method for providing a metal seed layer substantially free of discontinuities disposed on a substrate comprises the step of contacting a metal seed layer disposed on a substrate with an alkaline copper electroplating bath (pH 8 to 9) comprising copper pyrophosphate and complexing agent, one or more bases selected from ammonium hydroxide or tetra(C1-C4)alkylammonium hydroxide, one or more compounds selected from halides, brighteners, suppressors, levelers, grain refiners, wetting agents or surfactants.
Patent KR-20010107825-A (KR)
IPC: G01R31/308
Filed: 2001-10-24
Abstract: 비파괴 검사 장치 (또는 방법) 는, 기본적으로, 주사 대상인 반도체 장치 칩 (4) 의 표면 상에 레이저빔 (1300 ㎚) (3, 53) 이 조사되도록 구성된다.     레이저빔의 조사로 인해, 결함위치가 가열되어, 자기장을 유도하는 열기전력 전류를 발생시킨다.     SQUID (55) 등과 같은 자기장 검출기 (5) 가 자기장의 강도를 검출하고, 이에 기초하여 주사 자기장 화상이 생성된다.     표시 장치 (7) 는 스크린 상에서, 주사 레이저 현미경상 상에 주사 자기장 화상을 중첩시켜서, 반도체 장치 칩 상에서 결함 검사를 실행할 수 있다.     또한, 반도체 장치 웨이퍼 (40) 는 열기전력 발생기 (21) 및, 제 1 층 배선들 (34a, 34b) 과 전기적으로 접속된 그 배선들 (20a) 을 포함하도록 구성된다.     레이저빔을 열기전력 발생기 상에 조사시킴으로써, 제 1 층 배선들 사이에 존재하는 단락 결함 (42) 을 검출할 수 있다.     또한,  본딩 패드들을 형성하기 이전인 제조 중간 단계에 있으며,  상대적으로 넓은 범위의 표면적 내에 형성되고 제 2 층 배선 (37) 을 형성하는데 이용되는 금속막 (36) 뿐만 아니라 열기전력 발생 결함 (41) 을 포함한 제 1 층 배선 (34), 회로용 비아 (35) 및 검사용 비아 (305) 로 구성된 폐쇄회로를 포함하는 반도체 집적 회로 상에 비파괴 검사를 실행할 수 있다.
Patent KR-20020042416-A (KR)
Title: Plasma switched organic electroluminescent display
Inventor: BYUN BYEONG HYEON
IPC: H05B33/00
Filed: 2001-11-09
Abstract: PURPOSE: A plasma switched organic electroluminescent display is provided to reduce the driving voltage by using a plasma switch as a driving device. CONSTITUTION: An electroluminescent unit is comprised of a cathode layer(63), an electroluminescent layer(62) provided on the cathode layer(63), an anode layer(58) provided on the electroluminescent layer(62). A first power supplying unit is electrically connected to the anode layer(58) for supplying a first electric power to the electroluminescent layer(62) and is disconnected to the cathode layer(63). A plasma generating unit creates plasma and allows the plasma to contact to the cathode layer(63). A second power supplying unit supplies a second electric power to the plasma generating unit to generate the plasma. The cathode layer(63) is electrically connected to the first power supplying unit through the plasma.
Patent KR-20030039239-A (KR)
Title: Method of manufacturing capacitor in semiconductor device
Inventor: KIM GYEONG MIN
IPC: H01L21/8242
Filed: 2001-11-12
Abstract: PURPOSE: A method for manufacturing a capacitor in a semiconductor device is provided to reduce a leakage current by removing impurities in a Ta2O5 film and to improve capacitance by increasing dielectric constant of the Ta2O5 film. CONSTITUTION: A capacitor including a lower electrode(40), a ferroelectric film(50) and an upper electrode(60), is formed on a semiconductor substrate(10). The lower electrode(40) is formed by CVD(Chemical Vapor Deposition) using a Ru film as the lower electrode. The ferroelectric film(50) is composed of a Ta2O5-TiO2 film. Also, a Ru film or a TiN film is used as the upper electrode(60).
Patent KR-20020037694-A (KR)
Inventor: NIHEI MITSUYOSHI
IPC: H01J31/15
Filed: 2001-11-13
Abstract: PURPOSE: To enable high-frequency induction heating of the getter, without impairing the effects of reflection reduction, in the fluorescent display tube formed with a metal film for half mirror over the whole surface the front glass. CONSTITUTION: A half-mirror metal film 14, of which the opening parts are arranged in lattice-shape, is formed over the whole face of the inner face of the front glass 12, and a widow part 141 for high-frequency induction heating of the getter 31 is formed on the half-mirror metal film 14, and plural pieces of electrically insulated metal film 411 are formed on the window part 141. The high-frequency heating coil can heat the getter 31 by magnetic induction via the window part 141, without being affected by the metal film 411. The metal films 411 at the window part 141 perform the effect of reflection reduction same as the half-mirror metal film 14.
Patent KR-20030039713-A (KR)
Title: Image sensor and method of fabricating the same
Inventor: LEE JU IL
IPC: H01L27/146
Filed: 2001-11-14
Abstract: PURPOSE: An image sensor is provided to simplify a fabricating process and control a decrease of yield by simultaneously eliminating a step caused by a metal interconnection and a color filter and scum caused by the color filter. CONSTITUTION: A light receiving region is formed in a semiconductor substrate(31). An interlayer dielectric(34) is formed on the semiconductor substrate. A plurality of metal interconnections(35) are formed on the interlayer dielectric, exposing the light receiving region. The metal interconnection and the interlayer dielectric are covered with a passivation layer(36). A plurality of color filters have the same thickness as the passivation layer, planarized with the surface of the passivation layer and surrounded by a concave portion of the passivation layer between the metal interconnections. A plurality of micro lenses(38) are formed on the color filter.
Patent KR-20030040951-A (KR)
Title: Epitaxial wafer of high quality and method for fabricating thereof
Inventor: KIM HYEON SU
IPC: H01L21/20
Filed: 2001-11-17
Abstract: PURPOSE: A high quality epitaxial wafer and a fabricating method thereof are provided to reduce a fabricating cost by growing continuously the first epitaxial layer and the second epitaxial layer. CONSTITUTION: The first epitaxial layer(102) is formed on a silicon wafer(100). The first epitaxial layer is formed with a heavily doped layer. The second epitaxial layer(104) is formed on the first epitaxial layer. The doping density of the second epitaxial layer is lower than the doping density of the first epitaxial layer. The first epitaxial layer has the thickness of 2 or more micrometer. The first epitaxial layer is used as a gettering region by doping p type dopant of 1x10¬17 atoms/cm¬3 and n type dopant of 1x10¬16 atoms/cm¬3. The second epitaxial layer has the thickness of 2 or more micrometer. The second epitaxial layer is used as a semiconductor device forming region by doping p type dopant of 1x10¬16 atoms/cm¬3 and n type dopant of 1x10¬15 atoms/cm¬3.
Patent KR-20030041327-A (KR)
Title: the method extrusion test for slide door
Inventor: CHOI JAE HONG
IPC: G01M99/00
Filed: 2001-11-19
Abstract: PURPOSE: A method for performing an extrusion test of a slide door is provided to uniformly apply a load to a door by distributing the load through a jig and to prevent the load to be concentrated into a deforming section of the jig when the jig is deformed by installing an anchor adjacent to the jig. CONSTITUTION: A door is provided in such a manner that a load is uniformly distributed over the whole area of the door(S1). A jig is fabricated by cutting a steel plate having a predetermined thickness(S2). Then, the jig is welded into an inner panel of the door(S3). After that, an angle is welded on the jig in order to prevent the door from being deformed(S4). Then, an extrusion point is formed on the jig so as to allow a wire to be passed into the jig(S5). The extrusion point is formed at the center point of mass so as to uniformly distribute the load when the door is withdrawn(S6).
Patent KR-20020085763-A (KR)
Inventor: JUN JONG HYEOK
IPC: H04W4/12
Filed: 2001-12-08
Abstract: PURPOSE: A system and method for instructing medicine application using a mobile terminal is provided to store a message in an automatic scheduler through a message conversion program when dosage information is inputted through a prescription input program at a pharmacy and to automatically transmit the stored message to a patient's mobile terminal in time. CONSTITUTION: A system for instructing medicine application using a mobile terminal is comprised of a display part(170), a prescription receiving part(110), a medicine application instruction service part(13), a database(12), an Internet network(140), an SMS server(150), and a client's portable phone(160). The medicine application instruction service part(13) comprises a pharmacy server(120), an automatic scheduler(130), and a message conversion part(124). The database(12) contains a patient DB(121), a dosage DB(122), and a message DB(123). The prescription receiving part(110) receives prescription information from a user and transfers it to the pharmacy server(120). Among the data transferred to the pharmacy server(120), necessary contents for medicine application instructions are stored in the patient DB(121) and the dosage DB(122). The message conversion part(124) converts dosage information into a message suitable for medicine application instructions and stores it in the message DB(123).
Patent KR-20030047579-A (KR)
Title: Method for recording data in optical disk of optical disk recording/reproducing apparatus
Inventor: JIN U GANG
IPC: G11B7/004
Filed: 2001-12-11
Abstract: PURPOSE: A method for recording data on an optical disk of an optical disk recording/reproducing system is provided to prevent data from being abnormally stored in the optical disk. CONSTITUTION: The kind of data to be recorded on an optical disk and a recording speed of the optical disk are determined(S100). It is inspected whether or not the optical disk has a flaw(S115). Information about the position of the flaw is stored in a storage(S120). The data is recorded in the grooves of the optical disk other than the point on the optical disk at which the flaw exists(S125). The storage corresponds to a buffer memory included inside an optical disk recording/reproducing system. When the optical disk is not flawed, the data is recorded on the optical disk(S130).
Patent KR-20020047010-A (KR)
Inventor: KOIZUMI SACHIO
IPC: H01J29/48
Filed: 2001-12-14
Abstract: PURPOSE: To provide an excellent cathode-ray tube having a cathode structure of hermetic seal type in which reduction of emission of gas from an insulator made of crystallized glass holding the cathode sleeve and improvement in thermal resistance are made, and which has a superior electron emission property and can hold the interval between the cathode and a first grid electrode in high precision. CONSTITUTION: This is a cathode-ray tube that has a cathode structure of hermetic seal type, and the crystalline phase of the insulator 2 made of crystallized glass that holds the cathode sleeve is set so that the diffraction peak strength at the vicinity of 25.5°C of the diffraction angle in the X-ray diffraction may have a diffraction peak strength of 0.05-1.05 times against the diffraction peak strength at the vicinity of 26.5°C.
Patent KR-20030035728-A (KR)
Title: Process for production of a polyester multifilament yarn for the industrial use
Inventor: CHO EUN RAE
IPC: D01F8/14
Filed: 2001-12-20
Abstract: PURPOSE: A manufacturing method of polyester multi-filaments is capable of increasing equality of stress and producing polyester multi-filaments having at least 1000denier at spinning velocity of over 2000m/min. The polyester multi-filaments are characterized by having a strength of at least 7.8g/d, a shrinkage of below 4.7%, high modulus, excellent dimensional stability, high tenacity, a single yarn fineness of 2.5-6denier and total fineness of over 1000denier. CONSTITUTION: The polyester multi-filaments are obtained by the steps of: (A) melt-extruding a polyester polymer containing at least 90mol% of ethylene terephthalate unit to manufacture discharged yarn; (B) passing the discharged yarn through a heating area, followed by quenching and solidifying it by a radial in to out quenching method; (C) oiling the yarn within a distance of 2meters from the first winding roller and winding it at a spinning velocity of 2000-3200m/min. to get the undrawn yarn having a birefringence rate of 0.025-0.11 and a density of 1.338-1.375; and (D) drawing the yarn in a draw ratio of 1.5-2.5. The polyester polymer has an inherent viscosity of 0.90-1.2.
Patent KR-20030053182-A (KR)
Inventor: KIM GYEONG SEOP
IPC: G02F1/13
Filed: 2001-12-22
Abstract: PURPOSE: A liquid crystal display is provided to combine a cover bottom with a printed circuit board using a fixing clip. CONSTITUTION: A liquid crystal display includes a liquid crystal display module having a printed circuit board for providing drive signals to a liquid crystal panel(56). The liquid crystal display further includes a cover bottom(52) for supporting the liquid crystal display module and a fixing clip(64) for combining the printed circuit board with the cover bottom. A fixing hole in which the fixing clip is fixed is formed at one side of the printed circuit board. The fixing clip has a protrusion(64a) corresponding to the fixing hole. The liquid crystal display also has a top case surrounding the edge of the top and side of the liquid crystal display module.
Patent KR-20010086376-A (KR)
Title: Doctor rod for a coating device
IPC: B05C11/04
Filed: 1999-08-26
Abstract: Known doctor rods (1) used as dosing elements in coating devices have a cylindrical steel base body on whose cover surface a chromium or ceramic layer of hard material is applied. According to the invention, the cracks and craters in the layer of hard material are closed by a joint which is produced by means of an ion implantation process, by the hard material reacting with the ions applied in a plasma. The improved doctor rods have a longer service life than known doctor rods.
Patent KR-20010083916-A (KR)
IPC: A61P37/04
Filed: 1999-10-20
Abstract: 잔존활성이 천연체톡신의 1/2000 이하인 감독화톡신을 유효성분으로서 포함하는 아쥬반트 및 이 아쥬반트를 포함하는 백신에 의해 상기 과제를 해결한다. 예를 들면 천연 콜레라톡신의 감독화체의 이용에 의해, 경피접종 및 경비접종에 있어서도 충분한 면역증강성을 나타내는 백신을 제공한다.
Patent KR-20010080360-A (KR)
IPC: C08F2/00
Filed: 1999-11-01
Abstract: 본 발명은 제지기 펠트 및 다른 스테이플 섬유 응용 분야에 사용하기 위한 것과 같은 공업용 고상대점도 필라멘트에 관한 것이다.  본 발명은 또한 공업용 고상대점도 필라멘트를 재용융하고 방사하는 것과 같은 용도에 사용하기에 적합한 폴리아미드 플레이크의 고체상 중합을 위한 장치 및 방법에 관한 것이다.  본 발명은 또한 필라멘트를 제조하기 위한 용융 중합체의 용융상 중합 방법에 관한 것이다.
Patent KR-20010080478-A (KR)
Title: Method for decoratively shaping a painted substrate surface
IPC: B05D7/24
Filed: 1999-11-16
Abstract: According to the inventive method for decoratively shaping the surface of a substrate, a curable coating agent is applied to the substrate surface to be decorated and one or more embossing matrices are each pressed into the uncured coating layer at the point or points that is or are to be decorated with their side that has a relief characterised by amplitude maxima that are set 100 to 20000 nm apart. At least the areas covered by the embossing matrix or matrices are then at least partially cured, the embossing matrix or matrices are removed, and if there are still points in the coating layer that have not yet been cured, these are completely cured.
Patent KR-20010108141-A (KR)
Title: Fabrication of collimators employing optical fibers fusion-spliced to optical elements of substantially larger cross-sectional areas
IPC: G02B6/42
Filed: 2000-11-27
Abstract: A fiber collimator is provided, comprising at least two optical components, one of the optical components (e.g., an optical element such as a collimating lens or a plano-plano pellet) having a surface that has a comparatively larger cross-sectional area than the surface of the other optical component(s) (e.g., at least one optical fiber). The optical components are joined together by fusion-splicing, using a laser. A gradient in the index of refraction is provided in at least that portion of the surface of the optical element to which the optical fiber(s) is fusion-spliced or at the tip of the optical fiber. The gradient is either formed prior to or during the fusion-splicing. Back-reflection is minimized, pointing accuracy is improved, and power handling ability is increased.
Patent KR-20010111580-A (KR)
IPC: C07D405/12
Filed: 2001-02-02
Abstract: 본 발명은 파클리탁셀과 비교하여 개선된 용해도를 갖는 다양한 탁산 제형물, 특히 환자에게 경구 또는 비경구 투여하기 위한 탁산 유도체와 같은 제형물에 관한 것이다.
Patent KR-20020003238-A (KR)
Title: 촉매수용액에서 물과 시클로헥사논을 아세트산으로치환하는 방법
IPC: C07C49/403
Filed: 2000-04-19
Abstract: 이 발명은 양호하게는 코발트화합물인 수용성 촉매용액 속에서 물과 시클로헥사논을 아세트산으로 치환하는 방법에 관한 것이다.  그러한 수용액은 시클로헥산을 아디프산으로 직접 산화시킴으로써 만들어지는 반응생성물인 시클로헥사논/물 용액으로부터 촉매를 물과 함께 추출함으로써 생성된다.  물과 시클로헥사논 모두의 치환은 용매치환주 속에서 수행되며, 이 때, 아세트산은 촉매를 용해시키고, 수증기는 시클로헥사논을 응축기 속으로 밀어넣으며, 대부분이 시클로헥사논인 상부액상과 대부분이 물인 하부액상으로 이루어진 두 가지의 액상이 형성되거나 분리될 수 있는 경사분리기로 보내진다.  농축된 촉매추출물이 용매치환주로 들어가기 전에 시클로헥사논이 사전처리구역에서 제거될 수도 있으며, 이 때, 물의 일부도 제거될 수 있다.
Patent KR-20020009625-A (KR)
Title: Stern tube
IPC: B63H23/36
Filed: 2000-05-04
Abstract: The present invention relates to a stern tube (1) for ships, for enclosing a propeller shaft (2) which extends between a propeller and a driving motor. More specifically, the invention relates to a stern tube comprising a tube having at least one interior bearing (3) supporting the propeller shaft, a first fastening means (5) which is fixedly connected to a fixed part (4a) of the ship and arranged on a part facing the propeller, and a second fastening means (6) which is spaced apart from the first fastening means and connected to a second fixed part of the ship. According to the invention, the second fastening means (6) allows axial displacement of the stern tube (1) relative to the fixed part (4b), but prevents displacement of the stern tube (1) in the radial direction.
Patent KR-20020008850-A (KR)
IPC: A61P25/28
Filed: 2000-05-31
Abstract: 본 발명은 하기 화학식 I의 화합물 및 그의 약학적으로 허용되는 산부가염에 관한 것이다: 
     화학식 I 
     
       
     
     상기 식중, 
     R 1 은 수소 또는 히드록시를 나타내고; 
     R 2 는 수소 또는 메틸을 나타내고; 
     X는 -O- 또는 -CH 2 -를 나타낸다. 
     본 발명의 화합물은 NMDA 수용체에 우수한 친화성을 가지므로 질병의 치료에 유용한 것으로 확인되며, 이때, 치료학적 적응증으로는 발작 또는 뇌손상에 의해 야기되는 신경변성의 급성 형태; 알츠하이머병, 파킨슨병, 헌팅톤병 또는 근위축성측삭경화증(amyotrophic lateral sclerosis)과 같은 신경변성의 만성 형태; 박테리아 또는 바이러스 감염과 관련된 신경변성, 및 정신분열증, 불안증, 우울증 및 만성/급성 통증과 같은 질병이 포함된다.