baber/WOPTO huggingface dataset:
Patent KR-20030027698-A (KR)
Title: Absorbent structure and absorbent articles containing the absorbent structure
Inventor: NGUYEN HEIN
IPC: A61L15/60
Filed: 2002-09-24
Abstract: PURPOSE: Provided are an absorbent structure having improved absorption property and a sanitary absorbent article, such as a sanitary napkin, diaper, a medical pad and a pad for urinary incontinence comprising the absorbent structure. CONSTITUTION: The absorbent structure comprises a mixture of fibers and super absorbent particles. Particularly, the super absorbent particles are present in the structure in the amount of 2-60 wt%, and the super absorbent particles have a residual monomer content less than 300 ppm, an absorbent capacity under low load of at least about 42 g/g and a 0.30 psi percent retention of at least about 80.5%. The sanitary napkin(20) comprises a central absorbent zone having a fluid-permeable cover layer(42), a fluid impermeable barrier layer(50), and an absorbent system(44) formed of the absorbent structure.
Patent KR-20040026748-A (KR)
Title: E-commerce system development on Hybrid Peer to Peer Networks
Inventor: CHO SEONG HUN
Filed: 2002-09-26
Abstract: PURPOSE: A hybrid P2P based electronic commerce system is provided to offer an electronic commerce service among sellers and buyers over a P2P network. CONSTITUTION: The method comprises several steps. Data on plural commodities are searched, selected and transmitted for a single search query. The single search query is transmitted to all the clients connected to a server. If there exists a shared file corresponding to the query, the shared file is captured. When a client requests a search operation, a corresponding search query is transmitted to a server and then transmitted to all the connected clients(S20). The client, who receives the search query, delimits search words from the search query, and searches for necessary data in a proprietary database for each delimited search word(S21). The searched result is transmitted to the client, who requests the search operation, by using an IP address which is transmitted with the search query(S22).
Patent KR-20040028230-A (KR)
Title: COFDM transmission system add pilot signal in frequence domain and a method proessing OFDM signal thereof
Inventor: PARK CHAN SEOP
IPC: H04N7/015
Filed: 2002-09-30
Abstract: PURPOSE: A COFDM(Coded Orthogonal Frequency Division Multiplexing) transmitting system adding a pilot signal to a frequency domain and a signal processing method thereof are provided to set the pilot signal inserted in the frequency domain very low, thereby improving receiving efficiency and having compatibility with an existing system. CONSTITUTION: An FEC(Forward Error Correction) unit codes signals of a frequency domain for a receiving party to detect and correct an error. A mapping unit(310) maps the coded signals of the frequency domain by using a predetermined mapping method. A frame forming unit(320) inserts a first pilot signal to the signals of the frequency domain and forms OFDM frame signals formatted according to transmission modes. A pilot insertion unit(330) adds a second pilot signal having a relatively small size compared with an average size of the OFDM signals of the frequency domain to the OFDM frame signals. An IFFT(Inverse Fast Fourier Transform) unit(340) performs IFFT for the OFDM frame signals of the frequency domain to transform the IFFTed frame OFDM signals into OFDM signals of a time domain. A GI(Guard Interval) insertion unit(350) inserts a GI in the OFDM signals of the time domain.
Patent KR-20040031954-A (KR)
Title: Fabricating method of semiconductor device
Inventor: LEE HAE JEONG
IPC: H01L27/108
Filed: 2002-10-08
Abstract: PURPOSE: A method for manufacturing a semiconductor device is provided to prevent reverse micro loading effect by controlling the flow rate of CxFy gas and Ar gas according to RF power. CONSTITUTION: An interlayer dielectric(33) is formed on a silicon substrate(31). An etch stop layer(35), a core insulating layer(37) and a hard mask are sequentially stacked on the interlayer dielectric. A photoresist pattern(41) is formed on the hard mask to expose a storage node forming region of a cell region(I) and a guard ring forming region of a peripheral region(II). A hard mask pattern(39) is formed by etching the hard mask using the photoresist pattern as a mask. A core insulating layer is then etched by two-step etching processes, wherein the flow rate of an etching gas, such as CxFy and Ar is changed according to RF power.
Patent KR-20040038120-A (KR)
Title: Method for forming the Isolation Layer of Semiconductor Device
Inventor: HAN SANG GYU
IPC: H01L21/76
Filed: 2002-10-31
Abstract: PURPOSE: A method for manufacturing an isolation layer of a semiconductor device is provided to simplify the process by filling a trench with an HDP(High Density Plasma) oxide layer and to remove defects on a silicon surface by implanting N-type ions into an active region. CONSTITUTION: An HDP oxide layer is deposited on a silicon substrate(100) having a trench. By planarizing the HDP oxide layer, an isolation layer(150) is formed in the trench. An NMOS active region is formed by implanting N-type ions into an active region of the silicon substrate. The resultant structure is annealed. Then, an oxide layer(180) is formed on the resultant structure.
Patent KR-20040041767-A (KR)
Title: Device of Controlling Fluid using Surface Tension
Inventor: JUNG GWANG HYO
IPC: B01L3/00
Filed: 2002-11-11
Abstract: PURPOSE: A device for controlling fluid using surface tension is provided, thereby removing additional pump and electric power supply from the device, so that the device can be minimized and portable, while reducing the production costs, and increasing production yield. CONSTITUTION: A device for controlling fluid using surface tension comprises at least one of fluid storage chambers(100, 102); at least one reaction chamber(112); at least one fluid discarding chamber(114); at least one fluid channel(108) connecting the storage chamber, the reaction chamber and the discarding chamber; at least one fluid flow delaying portion(110) which is positioned within the fluid channel and delays the fluid flow by the surface tension; and at least one of fluid flow stop valves(104, 106) which are positioned within the fluid channel and stopping the fluid flow, wherein the fluid flow is automatically generated by the surface tension.
Patent KR-20040042095-A (KR)
Title: a
Inventor: KIM HAK GUN
IPC: H01C17/00
Filed: 2002-11-13
Abstract: PURPOSE: An apparatus for manufacturing a mesh for supply of uniform resistance is provided to reduce a manufacturing cost by stretching raw material through forming a hole on a metal coil. CONSTITUTION: An apparatus for manufacturing a mesh comprises a power transmission device for transferring the power of a motor to a rotating shaft, an up/down moving device(1) for conveying the up/down conveyer plate(15) upwardly and downwardly, a left/right moving device for conveying the up/down conveyer plate from side to side, and a forming device(3) for manufacturing a forming mesh(4).
Patent KR-20030040129-A (KR)
Title: Magnetic random access memory and reading method thereof
Inventor: IWATA YOSHIHISA
IPC: G11C11/14
Filed: 2002-11-13
Abstract: PURPOSE: To provide a read-out principle and a read-out circuit with respect to an MRAM. CONSTITUTION: In read-out of the first time, a read-out current is made to flow through a plurality of TMR elements connected in parallel in one column or one block, and initial data is detected. After that, write-in of trial data is performed for a selected memory cell. At the same time of write-in of trial data, read-out of the second time is performed. In read-out of the second time, a read-out current is made to flow in a plurality of TMR elements connected in parallel in one column or one block, and comparison data is read out. Successively, the initial data is compared with the comparison data, and a data value of the selected memory cell is judged. Lastly, rewriting is performed for the selected memory cell.
Patent KR-20040042503-A (KR)
Title: A sled impact test system of vehicles
Inventor: KIM JIN SU
IPC: G01M7/08
Filed: 2002-11-14
Abstract: PURPOSE: A collision testing apparatus for a vehicle is provided to perform a precise collision test for the vehicle by allowing an internal dummy to be moved along a route, which is realized when a vehicle accident occurs. CONSTITUTION: A collision testing apparatus includes a pair of rail blocks(1) installed at a bottom(10) of a laboratory. A sled(3) is installed on the rail blocks(1) such that the sled(3) moves in forward and reverse directions along the rail blocks(1). A testing vehicle(5) equipped with a testing dummy(11) is installed on the sled(3). A shock tester(9) is provided in front of the sled(3) so as to reproduce pulse. A hydraulic pressure generating unit is provided at a front end of the sled(3) so as to generate hydraulic pressure when the shock tester(9) is initially operated.
Patent KR-20040043026-A (KR)
Title: Apparatus for lifting a workpiece
Inventor: CHO JEONG HUN
IPC: H01L21/68
Filed: 2002-11-15
Abstract: PURPOSE: A lifting apparatus is provided to be capable of restraining the generation of a popping phenomenon and stably loading and unloading a semiconductor substrate. CONSTITUTION: A lifting apparatus includes a socket(110) connected to the lower portion of the first hole. At this time, the socket has the second hole having the same pivot as the first hole. The lifting apparatus further includes a bellows(120) connected with the lower portion of the socket and a lift pin(130). The lift pin includes a load integrated along the pivot of the second hole and bellows for loading and unloading a process object part by the motion of the bellows, and a head formed at the upper portion of the load for supporting the process object part. A path is formed between the second hole and the lift pin for exhausting the gas of the bellows while the bellows is shrunk. Preferably, a groove and the third hole are used as the path.
Patent KR-20040046233-A (KR)
Title: method for controlling cycle of washing machine
Inventor: CHO IN HAENG
IPC: D06F33/02
Filed: 2002-11-26
Abstract: PURPOSE: A stroke control method of a washing machine is provided to prevent decline of washing performance and to prevent breakage of parts resulting from an increase of load by performing water supply of proper amount according to the input of the laundry during washing. CONSTITUTION: A washing machine directly drives a washing mode or a pulsator by an inverter motor. A stroke control method of the washing machine comprises steps of sensing the washing amount of the current laundry thrown if a washing command is input(S21,S22); supplying water in accordance with the sensed washing amount and performing washing(S23); sensing door opening during washing(S24); and re-sensing the washing amount if door opening is sensed and performing washing by re-supplying water according to the sensed result.
Patent KR-20040046526-A (KR)
Title: Method for Precision Phase Control of Phased Array Antenna
Inventor: BAE JI HUN
IPC: H01Q3/30
Filed: 2002-11-27
Abstract: PURPOSE: A precise phase control method is provided to precisely control a beam steering angle by using a phase shifter having small number of phase control bits. CONSTITUTION: A precise phase control method comprises a first step of taking, as an input, a predetermined beam steering angle, and checking whether it is possible to perform a beam steering; a second step of calculating beam directions by dividing a beam if it is not possible to perform a beam steering; a third step of calculating intensities of beams with respect to the beam directions calculated in the second step; a fourth step of allocating phase shifters(240,250) of a phased array antenna with respect to the beam directions; and a fifth step of calculating phase differences between adjacent radiating elements(220,230) of the phased array antenna, and controlling phase shifters of beams by inputting phase values to the phase shifters allocated in the fourth step.
Patent KR-20030044871-A (KR)
Inventor: PANNWITZ AXEL
IPC: H02H3/20
Filed: 2002-11-29
Abstract: PURPOSE: A charge/discharge protection circuit is provided to be capable of reducing the surface area of the circuit and decreasing fabrication cost. CONSTITUTION: A charge/discharge protection circuit is located as an integrated circuit between a filter-capacitor(40) connected with two charge/discharge terminals(50,60) and a lithium cell(1). At this time, the charge/discharge protection circuit has a plurality of outer connections(Com, +Batt, Out, +VH). The connection(+VH) is connected to the charge/discharge protection circuit through a buffer capacitor(2) having the reference voltage(Com). Preferably, the buffer capacitor is normally charged through a semiconductor switch(4) by using a battery voltage. When the supply voltage falls, the semiconductor switch is opened and the buffer capacitor supplies power through a predetermined line(5) to main elements of the charge/discharge protection circuit.
Patent KR-20040050980-A (KR)
Title: Device for blocking the noise from engine of car
Inventor: KIM TAE IK
IPC: B60R13/08
Filed: 2002-12-11
Abstract: PURPOSE: A noise preventing device of a vehicle is provided to prevent the flow of the vibrating noise of an engine into the passenger room by installing a noise damping panel and a dash panel and to easily install regardless of the state of a panel. CONSTITUTION: A noise damping panel is installed behind an engine. A dash panel is spaced apart from the noise damping panel. A noise preventing device is placed between the noise damping panel and the dash panel. A first coil(13) is fixed on the surface of the noise damping panel via a bolt(17), while a second coil(15) is laid over the outer surface of the first coil. The first and second coils closely contact the surfaces of the noise damping panel and the dash panel.
Patent KR-20030011741-A (KR)
Inventor: KIM HYUN SOO
IPC: A46B15/00
Filed: 2002-12-11
Abstract: PURPOSE: Provided is a non-contact toothbrush which uses a tiny bubble generated from ultrasonic wave to eliminate tiny bacteria in teeth or gum so that it helps to eliminate various bacteria without contacting teeth with a brush. CONSTITUTION: The non-contact toothbrush is characterized by comprising the parts of: a brush head which includes a brush body at one side, a pole-typed booster and an ultrasonic vibrating sheet at the other side; a power converter and a power code which are connected to the brush body to supply power for each component; a timer switch which is fixed at one side of the brush body; and a brush head cover which distributes and radiates sound pressure and cavitation generated from ultrasonic vibration into washing liquid in users' mouth.
Patent KR-20040051211-A (KR)
Title: Method for operating channel card in communication system
Inventor: KIM JONG MIN
IPC: H04B7/26
Filed: 2002-12-12
Abstract: PURPOSE: A channel card operating method in a communication system is provided to continuously maintain high speed data service by allocating frequency of a failed 1xEV-DO channel card to a redundancy channel card. CONSTITUTION: The number of channel cards to be operated as active is obtained through the number of frequencies that can be supported in initialization of a communication system(S20). A channel card initialized in the communication system is determined to be active channel card or a redundancy channel card according to the number of channel cards operated as active(S21). If the active channel card is failed, the redundancy channel card is switched to an active channel card.
Patent KR-20040051292-A (KR)
Title: Method of manufacturing semiconductor device
Inventor: CHOI IK SU
IPC: H01L21/027
Filed: 2002-12-12
Abstract: PURPOSE: A method for manufacturing a semiconductor device is provided to improve the reliability of the device by effectively removing the polymers and photoresist residues generated in a pad opening process using a plasma treatment. CONSTITUTION: A pad(21) is formed on a semiconductor substrate(20). A passivation layer(22) is formed on the entire surface of the resultant structure for enclosing the pad. A photoresist pattern(23) is formed on the passivation layer. The pad is opened by selectively etching the passivation layer using the photoresist pattern as an etching mask. A plasma treatment is carried out on the resultant structure for removing the polymers(200) generated in the passivation layer etching process. The plasma treatment is carried out by using the gas chemical of CF4/O2/Ar.
Patent KR-20030007340-A (KR)
Title: System spraying quantitatively silicon for syringes
Inventor: SONG SUN HWA
IPC: B05C7/02
Filed: 2002-12-18
Abstract: PURPOSE: A silicone releasing agent dosing and injection system for a syringe is provided to spread the silicone releasing agent to the inside of outer cylinder of the syringe to allow a push stick and a gasket to smoothly move forward/backward within the outer cylinder. CONSTITUTION: The system comprises a pressure gauge(8) to control hydraulic/pneumatic pressure via a compression tube(9); an top cover(19) to be opened/closed by groove(19a) and projection(19b) and to be connected to the gauge(8) via a connection(13); a silicone releasing agent supply portion(S) consisting of a chamber(1) and a clamp(6) fixed to a stand(5) to support the chamber; an injection nozzle device including an outer barrel(2a), a piston, a hydraulic pressure inflow/outflow pipes(10,10') to push/pull the piston, an opening/closing valve, a valve hollow and an injection nozzle(3); and a control panel(4) to regularly enter/remove desired amount of the hydraulic pressure out of the syringe via the inflow/outflow pipes(10,10') at a constant interval.
Patent KR-20040057503-A (KR)
Title: Fabricated stairs
Inventor: GONG YOUNG MOON
IPC: E04F11/09
Filed: 2002-12-26
Abstract: PURPOSE: The curved stairs are provided to shorten a period of construction, to simplify construction work and to maintain assembly state finely. CONSTITUTION: The curved stairs contain a main stair body(1) composed of a stair stepping plate(10) whose upper side is a horizontal plane and a stair bearing plate(20) attached to the lower plane of the stair stepping plate(10) vertically, and a lateral bearing plate(2) where a main stair body(1) is fixed. The stair stepping plate(10) contains a concave part(12) formed in the center of the front and a convex part(14) projected from both sides.
Patent KR-20020042641-A (KR)
Title: Record head for thermally assisted magnetic recording
IPC: G11B5/012
Filed: 2001-06-07
Abstract: A record head for the thermally assisted magnetic recording on a storage medium. The head has an inductive section, which includes a magnetic circuit having a record flux guide ending in a record pole, and an optical section, which includes an optical guide ending in an optical outlet. The optical guide is arranged beside the magnetic circuit and is an optical layer transparent to a selected wavelength. The optical layer is interposed between two cladding layers, of which one is formed by the record flux guide of the magnetic circuit and the other is formed by a layer having an index of refraction smaller than the index of refraction of the optical layer. The record head makes it possible to minimize the time that elapse between the moment of maximal energy absorption in the medium and the moment of recording on the medium in a thermally assisted recording process.
Patent KR-20030007377-A (KR)
IPC: F04F5/10
Filed: 2001-07-11
Abstract: 유체의 유동을 저해하지 않는 이젝터 및 냉동기를 제공한다.  유체가 유동되는 중공 유로(부압 발생 유로)(25)와 중공 유로(25)의 중간에 설치된 작은 구멍(27)과, 작은 구멍(27)의 하류측에 설치된 부압실(31)을 구비하고, 상기 부압실(31)에는 중공 유로(흡입 유로)(26)가 개구되어 있는 이젝터(20)에 있어서, 중공 유로(26)에는 필터 수단인 메시(35)가 설치되어 있다.
Patent KR-20020033813-A (KR)
Title: 복수의 디바이스를 통한 음성 제어
IPC: H03J1/00
Filed: 2001-07-05
Abstract: 다수의 전자 제품(P1, P2, P3)에 대한 신뢰적이면서 효율적인 활성 및 활성해제 제어가 상기 제품 중 하나의 제품에 대해 특정한 활성 명령을 방출하고 음성 명령을 통해서 상기 제품의 성능 및/또는 기능을 제어하여 상기 제품을 활성시킴으로써 실행된다. 상기 하나의 제품에 대해 특정한 활성 명령을 방출하는 것은 상기 다수의 전자 제품 중 임의의 다른 전자 제품의 활성해제를 야기하는 활성해제 코드를 방출하는 것을 동반하다.
Patent KR-20020039676-A (KR)
IPC: B05D1/40
Filed: 2000-10-05
Abstract: 본 발명은 탁월한 표면평활도를 갖는 고분자 시트를 연속제조하는 방법, 상기 고분자 시트를 제조하는 장치, 및 상기 방법에 의해 제조된 광학 고분자 시트를 제공한다. 상기 방법은 고분자 기저 시트에 자외선 경화수지 조성물을 피복 혹은 적층하고; 피복 혹은 적층된 고분자 기저시트를 자외선 경화수지 조성물이 연성인 조건에서 최대 표면 조도(Rmax)가 Rmax ≤0.1㎛ 를 만족하는 평활면을 갖는 부재에 부착하고; 및 자외선광을 가하여 부재의 평활면이 갖는 평활도를 고분자 기저 시트에 전달하는 단계를 포함한다.
Patent KR-20020059720-A (KR)
IPC: H04N5/44
Filed: 2000-11-10
Abstract: According to the invention, a method for detecting modification to a video content receiver within a content distribution system is described. In one step, a message is generated by a content provider. The message is sent to the content receiver by way of a network. The message includes an intentionally-inserted error that a normally-operating content receiver would detect. The message is check for either authenticity or authorization. The message is received by the content receiver from the network. At a point physically remote to the content receiver, it is detected that the content receiver failed to detect the intentionally-inserted error in the message.
Patent KR-20020070444-A (KR)
Title: 고전압 하이브리드 회로
IPC: H01L31/0203
Filed: 2000-11-24
Abstract: 본 발명은 전압제어를 위한 제어전류에 의하여 변조될 수 있는 반도체를 갖는 하이브리드 회로에 관한 것으로서, 제어신호에 의하여 직렬로 전원을 공급받고, 고전압 다이오드(1)와 광학적 상호작용이 가능하도록 설계되어, 적외선 복사에너지를 방출하는 적어도 두 개의 다이오드(2 - 4)로 둘러싸이고, 하나의 역방향의 전압이 인가된 고전압 다이오드(1)를 포함한다. 이들 다이오드들은 적외선의 높은 투과율을 갖는 코팅 수지(6)로 채워지고, 적외선을 반사하는 하우징 내에 캡슐화되어 있다.
Patent KR-20020086534-A (KR)
Title: 열경화성 수지 조성물
IPC: C08K3/22
Filed: 2001-02-15
Abstract: 목적은 우수한 난연성, 내열성 및 내수성을 가지고 반도체 캡슐, 적층판, 전기 절연체 등을 위해 유리하게 사용되는 에폭시 수지 조성물을 제공하는 것이다. 이것은 다음 성분 (A) 및 (B)를 함유하는 열경화성 수지 조성물에 의해 달성될 수 있다: 성분 (A): 에폭시 수지, 성분 (B): R 1 및 R 2 가 수소 원자 또는 탄소수 1 내지 4의 알킬 그룹이고, R 3 이 아미노 그룹, 탄소수 1 내지 4의 알킬 그룹, 페닐 그룹, 비닐 그룹 등이며, m이 1 또는 2의 정수인 화학식 1로 표시되는 페놀 화합물을 함유하는 페놀 수지.
Patent KR-20020080447-A (KR)
Title: 초자왜(超磁歪) 합금 및 그 제조방법
IPC: C22C38/00
Filed: 2000-07-17
Abstract: 전자기기의 소형화, 의료기구나 각종 제조장치의 고성능화에 따라 가공성이 양호한 재료로 보다 더 큰 이동량〔큰 왜량(歪量)〕을 실현하는 액츄에이터가 요망되고 있다. 본 발명은 Fe 3-x Pt 1+x (-0.02≤x ≤0.2)를 열처리에 의해 규칙화율을 0.6∼0.95로 한 초자왜(超磁歪) 합금이다. Fe 3-x Pt 1+x (-0.02≤x ≤0.2) 소재를 균질화 어닐링한 후, 700∼1000K에서 0.5∼600시간 가열 처리하는 것에 의해 자왜량 0.3이상, 특히, 0.5이상의 초자왜 합금이 얻어진다.
Patent KR-20030009409-A (KR)
IPC: H03K17/00
Filed: 2001-02-05
Abstract: 본 발명은 교류 전류를 단극성 전원으로부터 부하(104)에 제공하는 회로(163)에 관한 것으로서, 상기 단극성 전원은 상기 부하에 공급되는 전류의 양을 제어하는 전류원(333)을 구비한다.  상기 회로의 제1 스위치(301) 및 제2 스위치(302)는 부하와 전류원(333) 사이에 연결되고, 전류가 제1 스위치 및 제2 스위치가 닫힘에 응답하여 제1 방향으로 전류원(333)으로부터 부하(104)로 흐르게 한다.  제3 스위치(303) 및 제4 스위치(304)는 부하와 전류원(333) 사이에 연결되고, 전류가 제3 스위치 및 제4 스위치가 닫힘에 응답하여 제2 방향으로 상기 전류원(333)으로부터 부하로 흐르게 한다.
Patent KR-20030005260-A (KR)
IPC: H02S20/23
Filed: 2001-04-04
Abstract: 본 발명은 프레임시스템에 관한 것으로, 구체적으로는 태양전지 PV 패널을 장착하기 위해 건물의 지붕(10)에 패널이나 박판형태의 솔라패널(12)을 장착하기에 적합한 프레임시스템에 관한 것이다. 설명된 프레임시스템에서는 PV 솔라 지붕타일로서 PV 패널을 조립하는데 있어 기다랗고 압출된 요소들을 밀봉요소(37)와 함께 사용한다. 각각의 프레임요소들은 프레임 자체의 내부에 솔라타일을 설치하는데 효과적이다. PV 타일 배열을 지붕의 일부로서, 또는 PV벽면 시스템으로 설치하는데는 단지 몇게의 추가적인 요소들만이 필요하다. PV 패널 설치방법은 건물에 태양열 에너지를 축적하는데에도 사용될 수 있다. 솔라타일의 받침대(11)로 인해 지붕 버팀대에서 떨어지게 설치하여 지붕개보수도 용이하고, 공기흐름에 의해 수분이 쌓이는 것도 방지되며 내후성도 장기간 가질 수 있다. 타일 뒤에 수분이 응축된 것을 외부로 배출하는 것도 본 발명의 프레임시스템의 중요한 특징이다.
Patent KR-20020091196-A (KR)
IPC: B32B17/10
Filed: 2001-04-12
Abstract: 본 발명은 가교제로서의 하나이상의 디- 및/또는 폴리카복실산 또는 이것의 유도체로 폴리비닐 부티랄을 가교시킴으로써 수득될 수 있는 고분자량 가교화 폴리비닐 부티랄, 이것의 제조 방법 및 이것의 용도에 관한 것이다.
Patent KR-20020089486-A (KR)
Title: 비스(4-하이드록시-3-니트로페닐) 화합물의 제조방법
IPC: C07C201/08
Filed: 2001-04-23
Abstract: 본 발명은 2 개의 페닐기가 직접, 또는 전자공여성 가교기, 설폭사이드기, 설폰기 또는 카보닐기를 통하여 결합된 비스(4-하이드록시페닐) 화합물을 불활성 용매 중에서 실질적으로 다른 산을 존재시키지 않은 조건하에 질산을 사용하여 니트로화시키는 것을 특징으로 하는 비스(4-하이드록시-3-니트로페닐) 화합물의 제조방법에 관한 것으로, 트리니트로화물 함량이 적은 목적 화합물을 고수율로 제조할 수 있다.   또한, 트리니트로화물 함량이 적기 때문에, 재결정에 의해 용이하게 내열성 폴리머 등의 원료로서 적합한 고순도품을 고수율로 수득할 수 있다.
Patent KR-20030011832-A (KR)
IPC: B21B45/08
Filed: 2002-03-29
Abstract: 유도가열코일 내측에 이 유도가열코일 내측을 빠져 나가는 피가열재로부터의 복사열을 차단하는 내열성 방열판을 배치하여 이루어지고, 유도가열코일에 의해 피가열재에 교번자계 (交番磁界) 를 인가하여 피가열재를 가열하는 유도가열장치에서, 피가열재 표면에 생성되어 방열판 위로 낙하하는 스케일을 유도가열코일의 입구측과 출구측의 적어도 한쪽으로부터 이 방열판에 대해 2 이상의 다른 분무각도로 기체를 분무함으로써 안정되게 방열판 위에서 비산시킨다.