baber/WOPTO huggingface dataset:
Patent KR-20020095771-A (KR)
Title: Process for the preparation of benzidine compound
Inventor: KANG PIL SEUNG
IPC: C07C209/10
Filed: 2001-06-15
Abstract: PURPOSE: A method for preparing a benzidine compound is provided to obtain a benzidine compound from a nitrobenzene compound in a single solvent continuously through processes, for improving the production yield. CONSTITUTION: The method comprises the steps of mixing sodium hydroxide, 2,3-dichloro-1,4-naphthoquinone, a surfactant, a nitrobenzene compound (a), toluene and a platinum catalyst; reacting the mixture with injecting nitrogen gas; making vacuous; supplying hydrogen gas to proceed the hydrogen reductive reaction to prepare a hydrazobenzene compound (b); filtering the solution to recover the catalyst; and adding a HCl solution the remaining solution to proceed the displacement reaction to obtain the benzidine compound (c). In the reaction formula 1, R is H, methyl group, methoxy group or Cl. The surfactant is sodium dodecyl benzene sulfonate. Preferably the reduction is carried out at 80-90 deg.C.
Patent KR-20020095822-A (KR)
Inventor: MIN BYUNG EE
IPC: E03F3/04
Filed: 2001-06-15
Abstract: PURPOSE: A connector of a concrete Hume pipe is provided to connect concrete Hume pipes simply by filling cement mortar in a connection pipe, to seal up a joint between Hume pipes tightly and to use without transformation or damage of a joint caused by external impact. CONSTITUTION: The connector of a concrete Hume pipe comprises a cylindrical connection pipe provided with an inlet(11) to fill up with cement mortar and a fixing wire to prevent the outward expansion of the connection pipe by load of the cement mortar, both side walls(15a,15b) provided with a cut-open part(13) and coupled with right, left sides of the connection pipe, and a coupler(34) formed on both side walls(15a,15b) to reinforce bearing power when placing cement mortar.
Patent KR-20020096590-A (KR)
Inventor: LEE WON
IPC: C08F4/658
Filed: 2001-06-21
Abstract: PURPOSE: A catalyst for the polymerization and copolymerization of ethylene and its preparation method are provided, to improve the catalyst activity and to obtain a polymer having a high apparent density and a narrow distribution of molecular weight and containing the reduced amount of fine particles. CONSTITUTION: The method comprises the steps of contacting a halogenated magnesium compound with an alcohol to prepare a magnesium solution; reacting the magnesium solution with an ester compound having at least one hydroxy group and a boron compound having an alkoxy group; and recrystallizing the obtained product by treating it with a titanium compound and a halogen compound, to prepare a solid titanium catalyst. The boron compound is represented by BR1n(OR2)(4-n), wherein R1 is an alkyl group of C1-C20 or a halogen atom; R2 is a hydrocarbon group of C1-C20; and n is an integer of 1-3. The titanium compound is represented by Ti(OR)aX(4-a), wherein R is an alkyl group of C1-C10; X is a halogen atom; and a is an integer of 0-4.
Patent KR-20030001136-A (KR)
Inventor: KIM SANG IK
IPC: H01L29/786
Filed: 2001-06-28
Abstract: PURPOSE: A method for manufacturing a thin film transistor is provided to improve a processing management capability and to prevent a leakage current by removing carbon generated on a polysilicon layer or a gate oxide by using a dry-etching and a cleaning. CONSTITUTION: An insulating layer(41) and a gate polysilicon layer(42) are sequentially formed on a substrate(40). After forming a gate oxide layer(43) on the resultant structure, a contact hole is formed to expose the surface of the gate polysilicon layer(42) by selectively etching the gate oxide layer(43). Carbon generated on the gate polysilicon layer(42) or the gate oxide layer(43) is then removed by cleaning. The cleaning process includes a dry-etching using a plasma and a wet-cleaning. A channel polysilicon layer(46) is then formed on the resultant structure.
Patent KR-20010079333-A (KR)
Inventor: JONG HYONG
IPC: B66C1/04
Filed: 2001-07-07
Abstract: PURPOSE: An automatic opener of a magnetic adsorber is provided to lift iron materials by adsorbing with magnetic, to simply control and to improve safety. CONSTITUTION: An automatic opening device mounted in a body(1) automatically turns on/off adsorption magnetic force. A rotation magnet case(5-1) rotates clockwise with 180 degrees while tension of a crane is firstly extended to turn on the adsorption magnet. The rotation magnet case rotates clockwise at 180 degrees while the tension of the crane is secondly extended to turn off the adsorption magnet. Thereby, the automatic opening device of a magnetic adsorber is conveniently controlled. An actuator(13) is installed on inside of the body to prevent malfunction of the opening device by preventing being damaged from other material.
Patent KR-20030005462-A (KR)
Title: High Strength-High Ductility Aluminum Casting Alloy containing Sn and Method thereof
Inventor: KIM GYEONG HYEON
IPC: C22C21/12
Filed: 2001-07-09
Abstract: PURPOSE: A high strength/high ductility aluminum casting alloy containing Sn is provided which is inexpensive and has superior mechanical properties such as strength and ductility to replace with an A201 alloy containing expensive Ag as a conventional high strength aluminum casting alloy, and a manufacturing method thereof is provided. CONSTITUTION: The high strength/high ductility aluminum casting alloy containing Sn comprises 4.0 to 5.0 wt.% of Cu, 0.3 to 0.5 wt.% of Mn, 0.1 to 0.3 wt.% of Ti, 0.01 to 0.1 wt.% of Zr, 0.05 to 0.15 wt.% of Sn and a balance of Al. The manufacturing method of the high strength/high ductility aluminum casting alloy containing Sn comprises the processes of bubbling an aluminum alloy melt having a composition comprising 4.0 to 5.0 wt.% of Cu, 0.3 to 0.5 wt.% of Mn, 0.1 to 0.3 wt.% of Ti, 0.01 to 0.1 wt.% of Zr, 0.05 to 0.15 wt.% of Sn and a balance of Al; manufacturing a casting ally by injecting the bubbled aluminum alloy melt into a preheated mold; solution treating the casting alloy, and water cooling the solution treated casting alloy; and aging the water cooled casting alloy at a temperature of 150 to 190 deg.C, wherein temperature of the aluminum alloy melt is held at 730 to 780 deg.C, the mold into which the melt is injected is preheated to about 250 deg.C, and the solution treatment is performed at a temperature of 520 to 545 deg.C for 5 to 15 hours.
Patent KR-20030006828-A (KR)
Title: Pre-alignment system having edge exposure device
Inventor: KIM JONG HYEON
IPC: H01L21/027
Filed: 2001-07-16
Abstract: PURPOSE: A pre-alignment system with a wafer edge exposure(WEE) apparatus is provided to improve productivity by simultaneously performing an alignment process and an edge exposure process, and to more precisely perform an edge exposure process by using laser as a light source. CONSTITUTION: A rotation axis(10) is prepared. A wafer(20) is placed on a stage installed on the rotation axis. An align sensor aligns the wafer on the stage. An edge exposure apparatus performs an edge exposure process of the wafer. The light source(60) irradiates light to the wafer. A control unit(70) controls the width of the light irradiated from the light source. The edge exposure apparatus includes the light source and the control unit.
Patent KR-20030013109-A (KR)
Inventor: KANG CHEOL HWAN
IPC: A01C7/08
Filed: 2001-08-07
Abstract: PURPOSE: Provided is a polyethylene film mulching planter which is combined with a rotary device of a tractor to form a ridge, plant polyethylene film and sow seeds at the same time so that it makes ease of works related to seeding. CONSTITUTION: In the polyethylene film mulching planter which is combined with agricultural machines including a common tractor to plant polyethylene film, punch the coated polyethylene film and sow the seeds as the planter moves, the sowing machine for planting polyethylene film comprises the parts of: a support(100) which is combined with the agricultural machines; a ridge former(300) which is combined with the support to form plural ridges on the soil at regular intervals; plural polyethylene film planting devices(400) which covers the ridge with polyethylene film and cover both edges with soil; and a sower(500) which punches a hole on the polyethylene film at regular intervals and sows the seeds into the hole.
Patent KR-20030014016-A (KR)
Title: Structure for open and close of folder type cellular
Inventor: KANG SANG GYUN
IPC: H04B1/38
Filed: 2001-08-10
Abstract: PURPOSE: An opening and closing structure for a folder-type terminal is provided to transmit much information without opening a folder cover by an LCD window installed at a front surface by rotationally moving the folder cover in a horizontal direction. CONSTITUTION: A body(10) has a keypad, and a combination hole(24) formed at an internal side of a guide groove is formed at one side of the body(10). A folder cover(20) has an insertion hole(13) penetrated with the combination hole(24) and an LCD window at its one side, and a lower insertion hole(14) having a bridging jaw(15) is formed on an upper portion of the folder cover(20). A hinge axis(30) is inserted into through the combination hole(24) of the body(10), an axis asperity(32) is formed on its upper portion of hinge axis(30) for guiding and limiting the rotation of the guide groove, and a rotation preventing jaw(34) is formed at a lower portion of the hinge axis(30) for being combined with the bridging jaw(15) and preventing the rotation of the hinge axis(30). A torsion spring(40) is combined with an end of the hinge axis(30), and is supported at its both sides by the body(10) and the folder cover(20) for providing a rotation force of the folder cover(20). A return spring(50) is installed at a lower portion of the hinge axis(30) for recovering the downward pushed hinge axis(30).
Patent KR-20020013818-A (KR)
Inventor: DENG ZHONGHAN JOHN
IPC: H04N5/335
Filed: 2001-08-16
Abstract: PURPOSE: A circuit and a method for pixel rearrangement in digital pixel sensor readout are provided to improve the performance of an image sensor by using an integrated auxiliary circuit. CONSTITUTION: An image sensor(100) includes a sensor array(102), a data memory(110) for storing pixel data and a pixel normalization circuit(112). The sensor array has a two-dimensional array of pixel elements and outputs digital signals as pixel data representing an image of a scene. The pixel data output by the sensor array are arranged in a sensor-bit arrangement and the pixel normalization circuit rearranges the pixel data into a pixel-bit order. The image sensor includes a sensor array, a data memory, and a pixel normalization circuit, all fabricated on a single integrated circuit. The pixel normalization circuit includes one or more of a pixel rearrangement circuit, a Gray code to binary conversion circuit, a reset subtract circuit, and a multiple sampling normalization circuit. Finally, a Gray code to binary conversion circuit is provided for high speed conversion.
Patent KR-20030018172-A (KR)
Title: Method of sensing an air suction in the wall of regenerator of coke oven
Inventor: CHOI JAE HUN
IPC: C10B29/06
Filed: 2001-08-27
Abstract: PURPOSE: A method for sensing the air inhalation is provided, to sense and prevent the air inhalation due to the crack generated at the wall of the heat storage room of a cocks oven. CONSTITUTION: The method comprises the steps of sensing the heat at a heat sensor loaded on the wall and delivering the sensed temperature to a computer; making the computer recognize the state to be normal if the temperature rises when air is exhausted and goes down when air is supplied; and making the computer recognize the state to be abnormal if the temperature goes down when air is exhausted and rises when air is supplied.
Patent KR-20030020567-A (KR)
Inventor: LEE YEONG SEOK
IPC: C23C16/44
Filed: 2001-09-01
Abstract: PURPOSE: A method of forming hydrogenated silicon oxycarbide films having a low dielectric constant is provided to minimize a loss of carbon by forming a thin film with gases including hydrogen. CONSTITUTION: A gas exhaust hole(300) is formed at a process chamber(304). A plurality of susceptors(303) are installed in the inside of the process chamber(304) in order to load wafers. A heater(312) is used for heating the susceptors(303). The RF power is applied to a plasma electrode in order to generate plasma within the process chamber(304). A rotary jet spray includes the first injector(308a) and the second spray injector. The first spray injector(308a) is used for supplying BTMSM(bis-trimethylsilylmethane) vapor and gases including oxygen. The second spray injector is used for supplying gases including hydrogen. A thin film is deposited by rotating horizontally the spray injector. A pressure of the process chamber(304) is 0.1 to 1 Torr in a deposition process. The temperature of a wafer is 25 to 400 degrees centigrade in the deposition process. The RF power of 100 to 2000W is applied to the plasma electrode in the deposition process.
Patent KR-20020032296-A (KR)
Inventor: HASHIMOTO MINORU
IPC: G02F1/01
Filed: 2001-09-06
Abstract: PURPOSE: An optical fiber dispersion equalizer is provided to compensate variation in propagation rate among employed wavelengths. CONSTITUTION: An optical fiber(1) having a grating(2) causes reflection of light of a predetermined wavelength from signal light propagating through the optical fiber(1). A substrate(4) has a groove for mounting the optical fiber(1). A plurality of heaters(3) regulate the temperature of the optical fiber(1). A plurality of heaters(3) are arranged on the substrate(4) along the groove.
Patent KR-20030021719-A (KR)
Title: An optical fiber mebroidery machine having cam driving style
Inventor: JIN SEUNG HO
IPC: D05C7/00
Filed: 2001-09-07
Abstract: PURPOSE: An embroidery machine for optical fiber equipped with a feeding assembly operated by a cam-driven method and a reel driving apparatus capable of preventing breaking of optical fiber regardless of instant high tensile force is provided which is simple in structure, low in noise, stable in feeding the optical fiber and excellent in durability. CONSTITUTION: The embroidery machine comprises: an XY axis driving apparatus capable of being moved in the direction of an X axis and Y axis, a cam-driven feeding assembly(100) installed on the XY axis driving device for embroidering with optical fiber on a fabric and reel driving apparatus for supplying optical fiber to the feeding assembly. The feeding assembly consists of a cam driven lifting device(110) for inserting a needle passed by optical fiber into a fabric and eliminating therefrom; a cam-driven optical fiber feeding device(170) for supplying optical fiber to the lifting device; and an optical fiber cutting device for cutting the optical fiber.
Patent KR-20030025984-A (KR)
Title: Hydraulic system for preventing free fall mast in forklift truck
Inventor: LEE JEONG HUN
IPC: B66F9/22
Filed: 2001-09-24
Abstract: PURPOSE: A hydraulic system is provided to effectively prevent free fall of the carriage and mast assembly without changing the configuration of the hydraulic system. CONSTITUTION: A hydraulic system comprises a first check valve(40) arranged on a hydraulic line(32a) for connecting a lift spool(32) and a lower chamber(8a) of a lift cylinder(8), wherein the first check valve includes a check flow channel(40a) for preventing the working oil from flowing backward from the lower chamber, and a communication flow channel(40b) for permitting the working oil to flow backward from the lower chamber; and a first check valve switching unit interlocked to the lift spool, and which switches the first check valve to the communication flow channel when the lift cylinder moves down. The first check valve switching unit includes a solenoid arranged at the first check valve, and a first switch(42) arranged at an operation lever(33) of the lift spool. The solenoid and the first switch are electrically connected with each other.
Patent KR-20030026032-A (KR)
Inventor: SONG MU GANG
IPC: H01J11/44
Filed: 2001-09-24
Abstract: PURPOSE: A plasma display panel is provided to prevent non-uniformity of luminance caused due to the difference of luminance of red, green and blue phosphors, by correcting the difference of luminance through the structural enhancement of the black matrix. CONSTITUTION: A plasma display panel comprises a front substrate and a rear substrate opposed to each other; barrier ribs(21) disposed in the gap formed between the front substrate and the rear substrate, and which define discharge cells; a plurality of first electrodes arranged on the front substrate; a plurality of second electrodes arranged on the rear substrate in the direction crossing the first electrodes; discharge cells formed at the crossing points of first and second electrodes; and a black matrix(BM) formed between discharge cells so as to improve contrast. The black matrix on the front substrate forms an aperture for passage of light emitted from phosphor layers. The discharge cells corresponding to the red, green and blue phosphor layers, respectively, have different areas of apertures.
Patent KR-20030026555-A (KR)
Title: Alignment Method in Wafer Exposing Equipment
Inventor: CHOI DAE YONG
IPC: H01L21/027
Filed: 2001-09-26
Abstract: PURPOSE: An alignment method in a wafer exposure apparatus is provided to reduce a loss of working time by performing a search alignment using neighboring points of an alignment point. CONSTITUTION: A wafer is loaded(S21). A search alignment process is performed by using a designated alignment point(S22,S23). The alignment process is performed by using the other alignment point if the alignment process is not properly performed(S32). The alignment data are used as data of an accurate alignment process by using a predetermined method(S25). The accurate alignment process is performed by using four or more designated points(S26). The alignment process is performed by using the other alignment point if the alignment process is not properly performed(S33). An aligning state of the wafer is checked(S27). The alignment process for the designated points is finished(S28). A correcting process for the aligned wafer is performed(S29). An exposure process is performed(S30). The wafer is unloaded(S31).
Patent KR-20030030682-A (KR)
Title: Illumination system and a projector imploying it
Inventor: KIM SEONG HA
IPC: G03B21/14
Filed: 2001-10-12
Abstract: PURPOSE: A lighting system and projector adopting the same is provided to realize a color image without using a color wheel. CONSTITUTION: A lighting unit(1,11) has at least one luminescence element(10a) for radiating a light beam of a predetermined wavelength and at least one hologram light element configured to compress a cross-sectional area of the light beam from the luminescence element. The first light path switch(20) changes a progressive path of an incident light from the hologram light element. The hologram light element comprises the first hologram light element(15) for switching a progressive direction of an incident beam from the luminescence element or a luminescence element array, and the second hologram light element(18) designed to reduce a diffraction angle of an incident beam whose progressive direction is switched.
Patent KR-20030033802-A (KR)
Title: Device for supporting a running member of a overhang door
Inventor: WATANABE JIRO
IPC: E05D15/06
Filed: 2001-10-25
Abstract: PURPOSE: A moving body supporting device of an overhung door is provided to improve working efficiency by assembling and disassembling the moving body supporting member from the door simply and securely and adjusting the door up and down. CONSTITUTION: A moving body supporting device comprises a storage case(1) attached to a door, a moving body(2), and a moving body supporting member(3) detachably inserted a space part(11) of the storage case. The moving body supporting member has left and right elastic claws(31) elastically combined assembling ends(12) of the space part, and gripping pieces(32) disassembling the elastic claws. The moving body has a downward screw shaft(21) inserted to a vertical hole(33) of the moving body supporting member with moving up and down to restrict relative rotation. A first bevel gear(34) engaged with a second bevel gear(35) are contained in the moving body supporting device, and a screw hole(36) is formed in the center of the first bevel gear. The screw shaft is inserted to the screw hole, and an operating unit(37) is exposed in the front of the moving body supporting member to rotate the second bevel gear.
Patent KR-20030034943-A (KR)
Title: Direct Observation Apparatus and method of Hot Crack in Coexistence Zone of Solid phase and Liquid phase
Inventor: JUN GI HONG
IPC: G01B11/30
Filed: 2001-10-29
Abstract: PURPOSE: An apparatus for directly observing hot crack in a zone where a solid state and a liquid state coexist, and a method thereof are provided to conveniently observe the generation of the hot crack. CONSTITUTION: A heating coil(104) heats one side of a test piece(103) fixed by a tension tester(100). A cooling gas nozzle(105) sprays cooling gas cooling the other side of the test piece. A camera(106) takes a photograph of a zone where a solid state and a liquid state of the test piece coexist in tensioning the test piece. An image processor(107) processes the photographed image by using an image processing program capable of tracing a position to derivate the transformed quantity and the transforming rate of the test piece.
Patent KR-20030037043-A (KR)
Title: improved air-conditioner in efficiency using condensed water
Inventor: LEE DONG SIK
IPC: F24F1/00
Filed: 2001-11-01
Abstract: PURPOSE: An air conditioner with improved efficiency using condensed water is provided to improve cooling efficiency of the air conditioner by increasing cooling efficiency of refrigerant. CONSTITUTION: A connecting pipe(40) functioning as a channel for refrigerant flowing from a condenser to an evaporator(8) of a heat exchanger(6) is installed to pass an inside of a drain hose(50) connected with a drain panel(10) placed on a lower part of the heat exchanger. A distributor(15) is placed on an end of the connecting pipe. A plurality of capillary tubes(14) is branched from the distributor and are connected to the evaporator.
Patent KR-20030037095-A (KR)
Title: Method and apparatus for detecting error of digital protective relay
Inventor: KANG SEUNG HO
IPC: H02H3/00
Filed: 2001-11-02
Abstract: PURPOSE: A breakdown detecting device is provided to protect an equipment and a line by separating a breakdown phase when an abnormal state is detected at a three phase current and a three phase voltage. CONSTITUTION: A three phase circuit input part receives a three phase voltage(Va,Vb,Vc), a three phase current(Ia,Ib,Ic) and an intermediate current(In). The first breakdown detecting part(200) calculates effective values of the three phase voltage(Va,Vb,Vc) and the three phase current(Ia,Ib,Ic) and detects whether or not of breakdown according to a calculated result. The second breakdown detecting part(300) extracts sample data of the three phase voltage(Va,Vb,Vc) and the three phase current(Ia,Ib,Ic) and detects whether or not of breakdown according to a comparison result with reference data. A combination part(400) issues a breakdown detection signal output from either one of the first and second breakdown detecting parts(200,300).