baber/WOPTO huggingface dataset:
Patent KR-20090016356-A (KR)
Title: Gas treatment device
Inventor: HAN SANG KOOK
IPC: B01D53/02
Filed: 2007-08-10
Abstract: A gas treatment apparatus is provided to successively purify gas without stopping the apparatus by using two cartridges and two regeneration liquid-circulating pumps, thereby continuously operating the other cartridge although the operation of one cartridge is stopped. A gas treatment apparatus comprises a cartridge assembly(10), a regeneration liquid tank(30), a regeneration liquid supply pipe(21), a regeneration liquid recovery pipe(22), and a regeneration liquid-circulating pump(41). The cartridge assembly includes a gas treatment cartridge(11), a gas inlet(12), and a gas outlet(13). In the cartridge assembly, a regeneration liquid cleaning a gas treatment cartridge flows into a top part of the gas treatment cartridge in the form of a laminar flow and discharges from a bottom part of the gas treatment cartridge. The regeneration liquid tank is installed on a bottom part of the cartridge assembly, has a cross-sectional area larger than that of the cartridge assembly, and contains a regeneration liquid recovered from the cartridge assembly after the regeneration liquid is supplied to the cartridge assembly. The regeneration liquid supply pipe is installed on a top part of the cartridge assembly and the regeneration liquid tank to supply the regeneration liquid from the regeneration liquid tank to the cartridge assembly. The regeneration liquid recovery pipe is installed between a bottom part of the cartridge assembly and the regeneration liquid tank to recover the regeneration liquid passing through the cartridge assembly into the regeneration liquid tank. The regeneration liquid-circulating pump is installed within the regeneration liquid tank to supply the regeneration liquid to the cartridge assembly through the regeneration liquid supply pipe.
Patent KR-20090022368-A (KR)
Title: Cosmetic composition for alleviating the skin wrinkle comprising the extract of metasequoia glyptostroboides
Inventor: LEE GHANG TAI
IPC: A61Q19/08
Filed: 2007-08-30
Abstract: A cosmetic composition with metasequoia glyptostroboides extracts is provided to promote synthesis of collagen and suppress generation of a collagen decomposition enzyme. A cosmetic composition comprises 0.00001-30.0%(w/w) of metasequoia glyptostroboides extracts on a total weight basis of the cosmetic composition. The metasequoia glyptostroboides extracts are obtained by heating metasequoia glyptostroboides with an extraction solvent indicating water, a C1-C4 anhydrous or hydrous alcohol, acetone, ethyl acetate and a butyl acetate in an extractor with a cooling condenser at a temperature of 40-100°C for 3-20 hours.
Patent KR-20090027512-A (KR)
Title: Reinforcing armature for concrete structure and repair method using the same
Inventor: LEE SU NAM
IPC: E04G23/02
Filed: 2007-09-12
Abstract: A reinforced panel for the concrete structure is provided that the tensile strength and the compressive strength are improved since the reinforced panel ossifying the sheet steel in the ceramic-based mortar is fixed to the surface of the concrete structure. A reinforced panel for the concrete structure comprises a panel body(11) in which the ceramic-based mortar metalizes and which is formed, a sheet steel(12) reclaimed within the panel body, a connection part (12a) exposed by the outside of the panel body, an anchor bolt inserted into the surface of the concrete structure through the connection part.
Patent KR-20090028113-A (KR)
Title: Video remote controller
Inventor: JUNG MI KYOUNG
IPC: H04Q9/04
Filed: 2007-09-14
Abstract: A video remote controller for the remote control of DTV and information process are provided to coincide with current broadcasting information and the stored broadcast information by automatically updating broadcasting information based on EPG(Electronic Program Guide) information. A communications device(260) receives EPG(Electronic Program Guide) information transmitted from a digital television receiver. A processor(210) performs the processing of the received EPG information. A storage unit(230) stores the received EPG information processor. A display devicE displays the received EPG information. The receiving device receives the time/day information from DTV. A time/date of the remote controller is automatically set up the processor.
Patent KR-20090032179-A (KR)
Title: Non-volatile memory device and method of manufacturing the non-volatile memory device
Inventor: SHIN WON SIK
IPC: H01L27/115
Filed: 2007-09-27
Abstract: A non-volatile memory device and a method of manufacturing the non-volatile memory device are provided to uniformly form the dissemination of the threshold voltage during the erase operation by forming the impurity concentration of the floating gate electrode adjacent to the dielectric layer pattern higher than the impurity concentration of the floating gate electrode adjacent to the turner insulating layer. A tunnel insulating film pattern(118) is formed in a substrate(100) and a floating gate electrode(130) and the substrate are insulated. The floating gate electrode comprises the first poly silicon film pattern(126) and the second poly silicon film pattern(128). The first poly silicon film pattern comprises the poly silicon which the first impurity of the first concentration is doped. A field insulating film pattern(122) is extended from the inside of substrate. The field insulating film pattern has the structure protruded from the surface of substrate. The dielectric layer pattern comprises the silicon oxide, the oxide/nitride or the high-k dielectric material. A control gate electrode(134) is formed in the dielectric layer pattern.
Patent KR-20090032191-A (KR)
Title: Structure of horn switch
Inventor: BAE JIN HO
IPC: H01H5/00
Filed: 2007-09-27
Abstract: A structure of a horn switch is provided to minimize friction between a movable terminal and a driving terminal by forming an uneven groove on a surface of a contact point plate. A screw groove(3) is formed on a top of a hub core(1). A horn plate(11) has a movable terminal(12), and is fixed in a top part of a bolt(31) inserted in the screw groove. An insulator(14) is fixed in a coupling part of the horn plate and the bolt. An elastic spring(32) is installed in a bottom of the insulator, and maintains an optimal interval between the horn plate and the hub core. A contact point plate(21) supports a bottom of the elastic spring. A fixing terminal(22) corresponding to the movable terminal is formed in one end of the contact point plate. The contact point plate is adhered to a top surface of the hub core.
Patent KR-20090032680-A (KR)
Title: Composition of semiconductor attaching paste
Inventor: LEE JUN WOO
IPC: C09J1/02
Filed: 2007-09-28
Abstract: An adhesive paste composition for a semiconductor device is provided to ensure properties of adhesive, for example, printing characteristic, die attachment and moisture-resistance, and to solve viscosity increase and heat/electric conductivity. An adhesive paste composition for a semiconductor device comprises base resin and additives. The additives comprise inorganic filler 0.1-5 parts by weight based on the whole composition 100.0 parts by weight. The inorganic filler comprises the first inorganic filler component having low specific gravity and molecular weight and the second filler component having low specific gravity and molecular weight. The second filler component is contained in the amount of 10-30 parts by weight based on the first inorganic filler.
Patent KR-20090040968-A (KR)
Inventor: HWANG CHEON NAM
IPC: F21V3/04
Filed: 2007-10-23
Abstract: 본 발명은 조명장치의 광원의 외측에 배치되어 광원으로부터 방출된 빛을 외부로 출사하는 조명장치용 커버플레이트에 있어서, 광원에서 입사되는 빛의 반사율을 줄임으로써 높은 광투과도와 고휘도의 빛을 출사할 수 있는 조명장치용 커버플레이트에 관한 것이다, 본 발명에 따른 조명장치용 커버플레이트는, 내부에 빛의 산란을 위한 무수히 많은 기포가 형성된 광투과성의 합성수지 재질로 이루어지며, 광입사면에 요철형태의 패턴이 형성되어, 상기 광입사면의 패턴을 통해 내부로 입사된 빛을 전면(全面)으로 확산시키면서 출사하도록 된 것을 특징으로 한다. 
     이러한 본 발명에 따르면, 커버플레이트의 광입사면에 소정의 패턴이 형성되어 있으므로 커버플레이트로 입사되는 빛의 반사량이 줄어들게 되고, 내부로 입사된 빛이 기포에 의해 산란되면서 퍼지게 되므로 커버플레이트의 전면(全面)에 걸쳐 균일하게 빛이 확산됨과 더불어, 높은 광투과도와 고휘도로 빛을 출사시킬 수 있다.  
       
     조명장치, 광고장치, 광고판, 커버플레이트, 기포, 패턴
Patent KR-20090041775-A (KR)
Title: Screw for loading and unloading of coal
Inventor: KIM BYUNG DOO
IPC: B65G65/22
Filed: 2007-10-24
Abstract: A screw for loading and unloading coal is provided to prevent abrasion of a screw blade due to the contact between the screw blade and coal and lengthen lifetime of the screw by forming a high hardness member at the site in which the abrasion of the screw blade is generated. A screw for loading and unloading coal comprises: a screw blade(10) spirally coupled in the outer circumference of a main shaft(120) rotated in the inside of the screw case; and a high hardness member(20) which is coupled in the leading end of the screw blade and prevents the abrasion of the screw blade. The high hardness member is made of the material sintered by mixing binder metal for sintering with carbides, nitrides, borides and ceramics.
Patent KR-20090046232-A (KR)
Inventor: HUH YUN SUNG
IPC: H02S20/10
Filed: 2007-11-05
Abstract: 학교 또는 관공서와 같이 비교적 넓은 옥상을 구비한 건축물에 용이하게 설치할 수 있으며, 또한 건축물의 옥상 바닥 면을 손상시키는 일이 없이 견고하게 설치할 수 있는 자중형 태양광 전지 어셈블리를 개시한다. 본 발명의 태양광 전지 어셈블리는, 건축물의 옥상 바닥면에 배치되고 길이 방향을 따라 양단부가 서로 연결되는 메인 지지대들, 메인 지지대들에 결합되는 기둥부들, 기둥부들에 결합되는 집광판들을 포함한다. 
       
     태양전지, 발전판, 집광판, 솔라셀, 지지대
Patent KR-20090046542-A (KR)
Inventor: LEE JAE BEUM
IPC: B22C9/22
Filed: 2007-11-06
Abstract: 본 발명은 디스크 로터 주조용 금형의 구조에 관한 것으로, 이는 내부에 제조될 제품의 형상과 적어도 부분적으로 상응하게 된 상부공동부(12)를 갖는 상부금형(10)과, 이 상부금형(10)의 상부공동부(12)와 대칭되는 형상으로 된 하부공동부(22)를 갖는 하부금형(20)과, 상기 상부금형(10) 및 상기 하부금형(20)의 사이에서 상하로 대향되게 배치되어 상부공동부(12) 및 하부공동부(22)에 각각 주조공동부(50a,50b)를 형성하게 되는 쌍으로 된 중자(30a,30b)와, 이들 중자(30a,30b) 사이의 대칭중심에 위치되는 중자연결부재(40)로 이루어져서, 임의의 크기를 갖는 한 쌍의 금형 내에서 임의의 개수로 배열된 주조공간부를 복층으로 구성할 수 있게 되어, 제품의 생산량을 2배로 향상시킬 수 있게 된다.
Patent KR-20090048194-A (KR)
Inventor: HAN JUNG PILL
IPC: B29C48/92
Filed: 2007-11-09
Abstract: 본 발명은 압출물 휨 방지장치에 관한 것으로, 보다 상세하게는 압출다이의 후방부에 설치되어 압출물과의 접촉에 의해 압출물의 속도를 감속시키는 속도제어부재; 상기 속도제어부재를 상하방향으로 이동 조절하는 상하이동 조절 유닛; 및 상기 속도제어부재를 좌우방향으로 이동 조절하는 좌우이동 조절 유닛을 포함하여, 속도제어부재를 상하방향 및 좌우방향으로 정확하고 용이하게 조작할 수 있어 압출물의 휨을 효과적으로 방지할 수 있는 압출물 휨 방지장치에 관한 것이다.  
       
     허니컴, 구조체, 세그먼트, 필터, 압출기, 속도, 휨
Patent KR-20090058694-A (KR)
Title: Driving apparatus and driving method for organic light emitting device
Inventor: SUNG SI DUK
IPC: G09G3/32
Filed: 2007-12-05
Abstract: A driving apparatus and a driving method for an organic light emitting device is provided to shorten a lifetime due to current variation flowing an emitting diode by controlling a current flowing a emitting diode. An amplifying unit(651) expands the number of a first image signal and outputs a second image signal. A compression unit(653) reduces the number of the grayscale of a second image signal, and it compresses a corresponding voltage and generates a third image signal. An operation unit(652) calculates a voltage corresponding to a second image signal and outputs a constant value, and an accumulation unit(654) accumulates the constant value. A memory(655) increases the number of the bit in response to an output signal of the accumulation unit.
Patent KR-20090059515-A (KR)
Title: Method for predicting user preference and apparatus thereof
Inventor: CHOI SUNG HWAN
IPC: H04N5/44
Filed: 2007-12-06
Abstract: A user preference predicting method and an apparatus thereof are provided to be used when selecting an item which can be recommended for a user. A user preference predicting method comprises the following steps of: calculating the similarity between the first and second users by using the repetition rate in which the first item of contents is consumed between the users(210); generating a similar user list of the first user based on the calculated similarity(220); and predicting the preference of the first user for the second item based on the preference of the third user, who is included in the similar user list, for the second item(230).
Patent KR-20090059522-A (KR)
Title: Apparatus and method for depositing thin film
Inventor: JANG CHUL HEE
IPC: C23C16/00
Filed: 2007-12-06
Abstract: A thin film depositing device and a deposition method thereof are provided to bury a trench of high aspect ratio by selectively removing an overhang only formed in an inlet of the trench using a neutral beam. A thin film depositing device comprises: a chamber(100) providing a reaction space; a gas supply part(200) supplying the reaction gas to the inside of the chamber; a stage(500) installed at the inside of the chamber and settling a substrate; a neutral beam generating part(400) installed on the top of the chamber; and a heating part to heat up the substrate. The neutral beam generating part provides the neutral beam incoming through the direction of substrate.
Patent KR-20090060619-A (KR)
Title: Internal combustion engine structure
Inventor: KIM YONG HEE
IPC: F16F15/00
Filed: 2007-12-10
Abstract: An internal combustion engine structure is provided to improve the output of the internal combustion engine by changing rotational angular velocity of a crank shaft according to the rotation angle of the crank shaft and forming the suitable condition of a combustion chamber and the motion condition of the piston. A piston(1) linearly reciprocating in an internal combustion engine is connected to a crank shaft(5) through a connecting rod(3) and rotates the crank shaft. The structure of the internal combustion engine comprises: a flywheel(7) having the rotary shaft of the direction inclined to the rotary shaft of the crank shaft; and a universal joint(9) connecting the flywheel and the crank shaft to each other.
Patent KR-20090062421-A (KR)
Title: Motor torque limit method of hybrid electric vehicle
Inventor: MOON SANG HYEON
IPC: B60L50/16
Filed: 2007-12-13
Abstract: A method for restricting the motor torque of a hybrid vehicle is provided to prevent the counter-rotation of an engine, thereby preventing the damage of an engine due to the counter-rotation. A method for restricting the motor torque of a hybrid vehicle comprises the steps of determining the motoring mode or the generating mode in the control process of the motor torque output; comparing the present motor speed with the regenerative torque limit start velocity set according to the vehicle engine idle speed in case of the generating mode; and restricting the motor torque output by using the torque value calculated based on the regenerative maximum torque, the regenerative torque limit start speed and the motor speed as a torque instruction value if the motor speed is equal to or greater than 0 and is equal to or less than the regenerative torque limit start speed in the generating mode.
Patent KR-20090064750-A (KR)
Title: 반도체 소자의 마스크 및 마스크 제조 방법
Inventor: KIM JONG DOO
IPC: H01L21/027
Filed: 2007-12-17
Abstract: 실시예에 따른 반도체 소자의 마스크는 제1 식각 영역이 형성되고, 석영을 포함하는 제1층; 상기 제1층 위에 형성되고, 상기 제1 식각 영역이 형성되며, 상기 제1 식각 영역에 인접된 제3 식각 영역이 형성되고, 다수의 제2 식각 영역이 형성되며, 몰리브덴/실리콘(MoSi)을 포함하는 제2층; 상기 제1 식각 영역과 상기 제3 식각 영역 사이에 형성되며, 크롬 또는 니켈을 포함하는 제3층을 포함한다. 
     실시예에 의하면, 미세 독립 패턴의 해상력을 향상시킬 수 있고, 웨이퍼 상에 구현된 패턴 이미지의 변형을 최소화할 수 있다. 또한, 고해상력의 선택적 위상반전 마스크를 독립 패턴에 적용하고, 감쇄형 위상반전 마스크를 밀집 패턴에 적용하여 함께 구현할 수 있으며, 리소그라피 공정 마진을 최소화할 수 있다. 
       
     반도체 소자, 마스크, 독립 패턴, 밀집 패턴, 위상 반전 마스크
Patent KR-20090065704-A (KR)
Title: Apparatus and method for manufacturing thin film
Inventor: BAE KYUNG BIN
IPC: H01L31/0445
Filed: 2007-12-18
Abstract: A thin film manufacturing apparatus and a thin film manufacturing method are provided to obtain a thin film for solar cell having high quality by depositing simultaneously copper, indium, gallium, and selenium. A substrate supporting plate(200) is installed at a lower part within a chamber(100) in order to support a substrate. The substrate is loaded on the substrate supporting plate. A target supporting plate(310) is formed to support a target. The target supporting plate is positioned opposite to the substrate supporting plate. An evaporation source(400) is partially inserted into the inside of the chamber in order to supply a deposition gas to the inside of the chamber. The evaporation source is installed at one side of the target supporting plate.
Patent KR-20090065807-A (KR)
Title: Jig for protecting load cell
Inventor: JEON SUNG WON
IPC: G01N3/02
Filed: 2007-12-18
Abstract: A jig for load cell protection is provided to replace a fractured board with a new one, thereby being semi-permanent. In a top body(10), a first internal space(11) is prepared. As to the top body, a lower side is opened. A contact pin is prepared within the first internal space. The contact pin is vertically fixed to the ceiling surface of the top body. One part of a bottom body(30) is inserted within the first internal space. In the bottom body, a second internal space is prepared. As to the bottom body, an upper side is opened. A fractured board(40) is prepared within the second internal space. The fractured board is parallelly arranged to the floor side of the bottom body. The fractured board contacts with a contact pin.
Patent KR-20090066436-A (KR)
Title: Device for inspecting solder paste
Inventor: KIM SUNG WOOK
IPC: B05C3/04
Filed: 2007-12-20
Abstract: A solder paste coating device having an ultrasonic wave vibrator is provided to obtain clean and minute patterns and to reduce the frequency of periodic cleaning for a solder mask by preventing solder paste from adhering to a slit or hole and. A solder paste coating device comprises: a solder mask(10) placed on a printed circuit board wherein patterns are formed; and a vibration unit applying vibration to the solder mask. The vibration unit includes an ultrasonic wave vibrator(30), which applies the vibration to the solder mask by ultrasonic wave. The vibration unit is connected to a squeeze injecting solder paste to the solder mask in order to deliver the vibration to the solder mask through the squeeze(20). The vibration unit is installed in the solder mask.
Patent KR-20080079582-A (KR)
Title: Wear look for lumbago gymnastics effect
Inventor: ISHIDA NOBUO
IPC: A41C1/00
Filed: 2007-12-20
Abstract: Clothing for lumbago gymnastic effects is provided to obtain a correction function for changing the muscular actions of a user and controlling the user's posture by being put on the user. A front bone(14) of a vertical direction that is non-elastic is bonded to the inner sides of the left and right long bones on the front side of the pelvis. A rear bone of a vertical direction that is non-elastic is bonded to the sacrum between the left and right pelvises. A knit(27) in the shape of a net having the lower end thereof as a free open end is installed between the front bone and the rear bone. The knit in the shape of a net is overlapped and bonded to the upper end portion of the knit of the main body part of the knit, which is made of a power net. The crotch portions are formed in the shape of pants.
Patent KR-20080061299-A (KR)
Title: Conductive rubber roller and transfer roller
Inventor: URANO RYUTA
IPC: G03G5/00
Filed: 2007-12-26
Abstract: A conductive rubber roller, and a transfer roller using the conductive rubber roller are provided to reduce resistance variation and the voltage dependence of resistance and to inhibit the contamination of an electrophotographic receptor. A conductive rubber roller comprises a conductive core material; and a rubber layer comprising rubber composition formed on the core material, wherein the rubber composition comprises a rubber component and a filler component. The rubber component comprises an epichlorohydrin-based rubber; and the filler component comprises a carbon black having an N2 adsorption specific surface area of 20-40 m^2/g and a DBP oil absorption of 80-100 mL/100 g and a carbon black having an N2 adsorption specific surface area of 15 m^2/g or less and a DBP oil absorption of 40 mL/100 g or less.
Patent KR-20080061323-A (KR)
Title: Multilayered coated cutting tool
Inventor: ASTRAND MARIA
IPC: C23C14/00
Filed: 2007-12-27
Abstract: A cutting tool having a wear resistant coating is provided, a coating having an increased hardness is provided, and a coating which is suitable for sharp edges is provided. In a cutting tool comprising a substrate made of sintered cemented carbide or cermet, ceramic, cubic boronitride or high speed steel and a thin, adhesive, hard and wear resistant coating, the coating comprising a laminar multilayered structure(X+Y+X+Y+X....) formed by alternately disposing layers of refractory compounds in non-repeated shape, the alternately disposed layers(X,Y) are comprised of metalnitrides, metalcarbides or metalcarbonitrides, wherein in the coating, the sequence of individual layer thicknesses have not a repeated period but are essentially aperiodic in the entire multilayered structure, the cutting tool is characterized in that: the individual X or Y layer thickness is more than 0.1 nm to less than 100 nm, preferably less than 50 nm, most preferably 2 to 30 nm, and varies essentially at random; the total thickness of the multilayered coating is 0.5 mum to 20 mum, preferably 1 to 10 mum and most preferably 1 to 5 mum; and the multilayered structure has an average chemical composition of AlaTibSicCrd(CeN1-e), where 0<a<0.5, preferably 0.05<a<0.4, 0.1<b<0.9, preferably 0.3<b<0.9, 0.01<c<0.17, preferably 0.02<c<0.1, 0<=d<0.06, a+b+c+d=1, and 0<=e<1, preferably 0<=e<0.2.
Patent KR-20070034059-A (KR)
Title: 전동 벨트
IPC: C08J3/24
Filed: 2005-06-21
Abstract: 본 발명에 의하면, 유류가 존재하는 환경 하에 있어서, 고무층을 형성하는 에틸렌-α-올레핀-디엔 고무 가류물에 유류의 부착이 있더라도, 팽윤의 정도가 적고, 또한, 고무층의 경도의 저하나 마모가 작은, 내유성이 뛰어난 전동 벨트가 제공된다. 그와 같은 전동 벨트는, 고무층으로서 압축 고무층과 접착 고무층을 가지며, 이 압축 고무층과 접착 고무층이 가류 접착되어 있는 동시에, 상기 접착 고무층 내에 심선이 매설되어 이루어지는 전동 벨트에 있어서, 상기 고무층 중 적어도 압축 고무층이 에틸렌-α-올레핀-디엔 고무를 유기 과산화물과 3관능성의 공가교제에 의해 가류하여 이루어지는 에틸렌-α-올레핀-디엔 고무 가류물로 이루어진다.
Patent KR-20070042589-A (KR)
Title: Method and device for liquid level measurement by means of radar radiation
Inventor: KLEMAN MIKAEL
IPC: G01F23/284
Filed: 2000-06-19
Abstract: A liquid level measuring gauging system including a radar antenna, a plurality of functionally independent radar measuring channels, and a feeder operably connected with the channels and operable to feed microwave signals of the channels to the antenna.
Patent KR-20070085495-A (KR)
Title: Novel methods for cleaning ion implanter components
Inventor: DIMEO FRANK JR
IPC: B08B6/00
Filed: 2005-10-21
Abstract: A method and apparatus for cleaning residue from components of the vacuum chamber and beaming of an ion implanter used in the fabrication of microelectronic devices. To effectively remove residue, the components are contacted with a gas-phase reactive halide composition for sufficient time and under sufficient conditions to at least partially remove the residue. The gas-phase reactive halide composition is chosen to react selectively with the residue, while not reacting with the components of the ion source region of the vacuum chamber.
Patent KR-20070089920-A (KR)
Title: Electrochemical cell architecture and method of making same via controlled powder morphology
Inventor: SEABAUGH MATTHEW M
IPC: H01M8/10
Filed: 2005-10-31
Abstract: The embodiments relate to an electrochemical cell that includes a first layer including a porous ceramic layer having pore channels. The pore channels can be infiltrated with a conductive coating, and can be sufficiently large that a majority of the pore channels remain open after applying the conductive coating. The cell can include a second layer on the first layer, the second layer including a porous interlayer. The first and second layer can function as an anode or a cathode. The cell can include a third layer including a ceramic membrane, and a cathode positioned on the third layer. The embodiments also relate to a method of making an electrochemical cell.
Patent KR-20070085744-A (KR)
Title: Method for producing chiral 8-(3-amino-piperidin-1-yl)-xanthines
Inventor: PFRENGLE WALDEMAR
IPC: C07D473/04
Filed: 2005-11-02
Abstract: The invention relates to an improved method for producing enantiomer-free 8-(3-amino-piperidin-1-yl)-xanthines.