baber/WOPTO huggingface dataset:
Patent KR-20000000996-A (KR)
Title: Internal clock signal generating device for synchronous semiconductor memory device
Inventor: PARK YONG JAE
IPC: H03K5/00
Filed: 1998-06-05
Abstract: PURPOSE: An internal clock signal generating device for a synchronous semiconductor memory device is provided to prevent the device from mis operation by blocking the generation of short pulses at the initial state of the internal clock signal. CONSTITUTION: The internal clock signal generating device for a semiconductor memory device comprises: a clock synchronization portion(30) for synchronizing a clock enable signal with a external master clock signal having constant time period; a latch portion(10) for latching the clock enable signal which is transferred through the clock synchronization portion to a constant voltage state for a predetermined time; and a clock generating portion(20) for receiving a signal generated by delaying the master clock signal for predetermined time and the output signal of the latch portion, and for generating the internal clock signal having the same time period with the master clock signal.
Patent KR-19990062429-A (KR)
Title: 가스 방전 패널 및 그 배기방법
IPC: H01J17/16
Filed: 1998-06-17
Abstract: 본 발명은 가스 방전 패널 및 그 배기방법에 관한 것이며, 패널 내부에 통기장벽을 설치함으로써, 내부의 불순물 가스를 완전하게 빼내어 방전 가스를 도입할 수 있도록 한다. 
     방전 공간을 형성하는 2 개의 기판간의 표시부에 대응하는 영역에 방전부를 구획하기 위한 줄무늬 형상의 복수의 격벽이 병렬로 배치되고, 주변에 봉합부가 형성된 가스 방전 패널의 주변부에 패널내외의 통기를 가능하게 하는 한쪽과 다른 쪽의 통기공을 형성하며, 또한 양측에 위치하는 각 격벽과 봉합부 사이에 각각 통기장벽을 설치하고, 이에 따라 한 쪽의 통기공으로부터 도입된 가스가 격벽과 격벽 사이를 통과하여 다른 쪽의 통기공으로 배출되도록 한다.
Patent KR-20000002524-A (KR)
Title: Inner voltage generation circuit of semiconductor memory device
Inventor: KIM YUN CHUL
IPC: H01L27/06
Filed: 1998-06-22
Abstract: PURPOSE: A digital style inner voltage generation circuit is provided to obtain a stable inner voltage level in a large frequency sphere. CONSTITUTION: The inner voltage generation circuit of a semiconductor memory device comprises: a comparison unit for generating an output voltage and electric current by comparing a standard voltage with the inner voltage if an outer voltage is fed; a buffer unit(220) for generating a signal keeping at the level of the outer voltage; a bias voltage unit(210) for regularly keeping the swing of the output signal of the buffer unit; an inner voltage generation unit(230) for down conversing the outer voltage by referring to the standard voltage and generating the inner circuit with the down conversed inner voltage according to the output signal of the buffer unit.
Patent KR-20000004156-A (KR)
Title: Preparation method of infrared ray absorbing bolometer
Inventor: JOO SANG BAK
IPC: H01L31/00
Filed: 1998-06-30
Abstract: PURPOSE: A preparation method of infrared ray absorbing bolometer is provided to enhance the infrared ray absorbency of the bolometer by forming a flat absorbing band as time goes. CONSTITUTION: The preparation method of infrared ray absorbing bolometer comprises: a step forming a pair of supporting levels comprising a substrate, a driving substrate level having a pair of connecting terminals, and a pair of supporting legs having a connecting line; a step forming an absorbing level comprising an absorbing band consisted of SiO2 on the supporting levels, and a bolometer element within the absorbing band; and a heat treatment step treating the SiO2 absorbing band under 200-400°C.
Patent KR-19990013537-A (KR)
Title: 열가소성 탄성중합체 가황물
IPC: C08L23/10
Filed: 1998-07-02
Abstract: 본 발명은, 경화제 시스템의 존재하에 동적 가황처리 함으로써, 열가소성 3중합체 및 고무 성분 및 임의의 첨가제로 부터 얻어진 열가소성 탄성중합체 가황물에 관한 것이다.    본 가황물은 우수한 물리적 성질 및 탁월한 가공성을 모두 지니고 있다.
Patent KR-20000010343-A (KR)
Title: Method for determining preference order of handoff in mobile communication system
Inventor: PARK JIN SOO
IPC: H04B7/26
Filed: 1998-07-31
Abstract: PURPOSE: A method for determining a preference order of a handoff in a mobile communication system capable of improving a performance of a handoff by using an expected call cut time obtained from a power value and a power variation rate, a requested channel capacity for a call, a feature variable as a preference order determining reference, is provided. CONSTITUTION: The method for determining a preference order of a handoff in a mobile communication system in order to add a preference order for a channel allotment with respect to handoff requesting calls which are in standby, without vacant channels, the method comprising the steps: detecting a call cut time, a requested channel capacity, and a kind of a service with respect to handoff calls which are in a standby state; adding reference order weights to the handoff calls and determining reference orders thereof, and preferentially allotting a vacant channel to a handoff call having a first reference order when the vacant channel is generated.
Patent KR-20000013203-A (KR)
Title: Timing deciding method of reverse channel for bidirectional radio paging
Inventor: KIM JUN MO
IPC: H04W56/00
Filed: 1998-08-05
Abstract: PURPOSE: A subscriber mail box management method about bidirectional radio paging system from bidirectional radio paging terminal is provided to set the timing a reverse channel in response to the timing of the forward channel. CONSTITUTION: The subscriber mail box management method about bidirectional radio paging system from bidirectional radio paging terminal comprises: a step synchronizing a unit cycle consisted of plural unit time slots to the frame transmitted from a radio paging system via a downlink when a message is transmitted from the radio paging terminal to the radio paging system; a step setting the start point of respective unit packet set according to said message in considering the transmission speed; and a step setting the start time of the packet to be transmitted via a radio uplink by the radio paging terminal in response to the time synchronization acquired by said radio paging terminal from said frame.
Patent KR-20000013634-A (KR)
Title: Magnetron with input filter using microstrip
Inventor: PARK JUNG-YEOB
IPC: H01J23/02
Filed: 1998-08-11
Abstract: PURPOSE: Magnetron is provided where it minimizes the volume not using the choke coil and tube type condenser which prevents a high frequency from leaking outside. It also prevents the combustion of choke coil and tube type condenser, due to failure in the estimation of leaking frequency band or conduction heat from model change. CONSTITUTION: Magnetron includes the anode in cylinder form with many veins inside, the cathode is located in the center of a circle formed by the veins with filaments surrounding it. Filter circuit(1) is composed of a couple of conductor boards each connected to the center lid(3) which is connected to the cathode and to the side lid(4) that is connected to filaments and the filter box accommodating the filter circuit. The filter circuit is arranged on the dielectric(5) with higher dielectric constant than that of air.
Patent KR-19990029482-A (KR)
Title: 저가로 열 안정 주파수를 생성하는 방법 및 장치
IPC: G01R35/00
Filed: 1998-09-03
Abstract: 본 발명은 저가로 열 안정 주파수를 생성하는 방법 및 장치를 개시한다. 본 발명은 비교적 열에 둔감하고, 저주파수이며 저가인 기존의 시계 크리스털(crystal) 및 고주파수이고, 저가이지만, 비교적 열에 민감한 기존의 시스템 클록의 장점을 취한다. 시계 크리스털 및 클록에 연결되는 설정 모듈(calibration module)은 기준 온도에서 시계 크리스털을 기준 주파수로 설정하고, 동작 온도에서 상기 클록을 시계 크리스털로 설정하여, 임의의 동작 온도에서 클록 주파수를 기준 주파수에 관련시킴으로써 저가로 정확도가 높고 상대적으로 온도에 둔감한 시간 또는 주파수 기반을 제공한다.
Patent KR-20000018807-A (KR)
Title: Drain device of special screw connecting unit for washing machine
Inventor: LEE SANG SOO
IPC: D06F39/08
Filed: 1998-09-04
Abstract: PURPOSE: A drain device of a special screw connecting unit for a washing machine is provided to drain when the water is gathered inside a burying groove with a special screw buried for connecting a front panel, a top cover, and an out case. CONSTITUTION: A drain device to drain the water gathered inside a burying groove buried a special screw comprises: a screw(31) to effectively drain the water gathered inside the burying groove(14) by equipping in the upper both sides of a front panel(3); plural drain grooves(14b) equipped downward a hole(14a) penetrated by the special screw(13); a driver groove(13c) formed in the upper face of a head unit(13a) of the special screw(13) safely arrived in the bottom of the burying groove(14); the front panel(3) and a top cover(2) connected in an out case(1) according to the connection by penetrating a screw unit(13b) of the special screw(13) through the hole(14a) formed in the middle bottom of the burying groove(14).
Patent KR-19990029994-A (KR)
Title: 해충의 방제방법
Filed: 1998-09-21
Abstract: 본 발명은 피자식물에 대한 해충을 생력적으로 방제하기 위한 살충방법을 제공하는 것이다. 
     파종 또는 가식(假植)전에 농약활성성분을 혼화한 육묘용 배토를 충전한 육묘용 용기에서 육묘하는 것을 특징으로 하는, 벼과 식물을 제외한 피자식물에 대한 해충의 방제방법으로, 육묘기뿐 아니라 본 밭에 이식한 후에도 살충효과를 발현시켜 한 번만의 처리로 장기간의 높은 방제효과를 발현시키는 것을 특징으로 하는 해충방제방법이며, 종래 방법과 비교하여 약제처리 회수를 대폭 줄일 수 있다.    게다가, 농한기의 작업으로 육묘용 배토 조제시의 통상 작업으로 비료 등의 혼화시에 동시에 처리할 수 있다.      그 결과, 대폭적인 노동력 저감을 가능하게 한다.
Patent KR-20000020657-A (KR)
Title: Method for overcoming link error in data link level
Inventor: CHIN YOUNG TAEK
IPC: H04L29/08
Filed: 1998-09-23
Abstract: PURPOSE: A method is provided to overcome a link error efficiently without encroaching on other system resources and reduce a system load by separating an input/output subsystem. CONSTITUTION: An input/output part of a system processor transmits a desired input/output message to a LAN device object of a fault tolerant intermediate service module(FT ISM) and waits for a response(S1). The LAN device object transmits the message to a device object having a link-faultless port out of two lower hardware device module(HDM) device objects to perform an input/output requested from the upper(S2, S3). An HDM device object for a link default confirmation confirms a link state bit of a management data interface(MDI) state register of the LAN controller periodically to detect a link error. The input/output request completed in the HDM device object responses to the FT ISM device object(S5), and the FT ISM device object responses to the LAN OSM(S6).
Patent KR-20000020722-A (KR)
Title: Construction structure of check brick for measuring residual quantity of refractory brick of converter
Inventor: PARK JAE GON
IPC: C21C5/44
Filed: 1998-09-23
Abstract: PURPOSE: A construction structure of a check brick for easily measuring the residual quantity of a refractory brick of converter according to the corrosion of a refractory brick is provided which can identify the changes of the residual quantity by the number of times used in operating a converter. CONSTITUTION: The construction structure of a check brick for easily measuring the residual quantity of a converter refractory brick according to the corrosion of the refractory brick comprises many refractory brick sets for measurement mounted on a lining refractory brick(109) at regular intervals in which the many refractory brick sets(10) for measurement comprise (a)a check brick(15) having a length(l) of a circumferential side of a converter(100) more than that of a radial side of the converter(100), (b)a card board paper(20) disposed in front of the check brick(15) and a number of cut bricks(25) disposed in front of the card board paper(20) based on the check brick(15). As the length(l) of the circumferential side of the check brick(15) is more than that of the surrounding refractory brick, The structure is easier to identify when it is exposed in the state of a hot rolling and corrosion resistance becomes higher by the reduction of a seam of bricks. The structure improves the durability of the refractory lining of the converter.
Patent KR-19990030222-A (KR)
Title: 폴리프로필렌 그래프트 공중합시 산화질소를 사용한 반응기오염 감소방법
IPC: C08F2/44
Filed: 1998-09-29
Abstract: 그래프트 중합된 비닐 단량체를 갖는 프로필렌 중합체 물질의 골격을 포함하는 그래프트 공중합체는, (1) 프로필렌 중합체 물질을 연속 공급되는 산화질소의 존재하에 유리 라디칼 중합 개시제로 처리하는 단계; (2) 프로필렌 중합체 물질을 연속 공급되는 산화질소의 존재하에 유리 라디칼에 의해 중합화될 수 있는 하나 이상의 그래프트 단량체로 처리하는 단계; (3) 그래프트 공중합화된 프로필렌 중합체 물질로부터 반응하지 않은 그래프트 단량체를 제거하고, 반응하지 않은 개시제를 분해시키며, 상기 물질중의 잔류 유리 라디칼을 불활성화시키는 단계에 의해 제조된다.  상기 공정에 사용된 산화질소는, 그래프트 공중합 반응에 거의 영향을 미치지 않으면서, 반응기 벽 및 기체 순환 루프상에 중합체 침착물의 축적을 감소시킨다.
Patent KR-20000025538-A (KR)
Title: Pulse width modulation circuit and inverter driving apparatus using the same
Inventor: RYU JAE HO
IPC: H05B6/12
Filed: 1998-10-13
Abstract: PURPOSE: An inverter driving apparatus using a pulse width modulation circuit is provided to control a pulse width of an output according to a necessary maximum operating time. CONSTITUTION: An inverter driving apparatus using a pulse width modulation circuit comprises: a pulse modulation element for outputting a pulse signal according to fluctuation of an input voltage; a maximum pulse signal generating element for generating a pulse signal capable of outputting a maximum output; and an AND circuit for ANDing the output of the pulse modulation element and the output of the maximum pulse signal generating element.
Patent KR-19990037118-A (KR)
Title: 마스킹된 실리콘 디옥사이드에 홀을 형성하는 플라즈마 에칭방법
IPC: H01L21/302
Filed: 1998-10-15
Abstract: 패턴잉된 마스킹막으로 덮여진 도핑되거나 도핑되지 않은 실리콘 디옥사이드막에 약 0.3 ㎛ 이하의 작은 크기와 높은 종횡비를 갖는 관통홀을 형성하는 플라즈마 에칭 방법이 제공된다.     이러한 방법은 에칭될 실리콘 디옥사이드막에 개구를 구비한 마스킹막을 형성하는 단계와,  반응 챔버 내에서 플루오르카본계 에칭 가스와 플라즈마를 사용하여 마스킹막의 개구를 통하여 실리콘 디옥사이드막을 선택적으로 에칭하여,  상기 실리콘 디옥사이드막에 관통홀을 형성하는 단계를 포함한다.     실리콘 디옥사이드막을 선택적으로 에칭하는 단계 동안에,  에칭 조건은,  1.1 내지 1.8 범위의 카본 대 플루오르의 비율(즉,  C/F 비율)을 갖는 플루오르카본 폴리머막을 마스킹막에 증착하는 방식으로 조절한다.     마스킹막은 바람직하게는 약 1 ㎛  이하의 두께를 갖는다.   본 방법은 표면파 플라즈마 에칭 장치를 사용하여 수행하는 것이 바람직하다.
Patent KR-19990045126-A (KR)
IPC: C07C68/06
Filed: 1998-11-09
Abstract: An industrially advantageous process for producing di-tert-butyl bicarbonate from tert-butyl alcohol and an alkali metal comprises continuously carrying out the following steps:   (A) reacting tert-butyl alcohol with sodium to form sodium tert-butoxide; (B) reacting the sodium tert-butoxide with carbon dioxide to form mono-tert-butyl sodium carbonate; and (C) reacting the mono-tert-butyl sodium carbonate with an aromatic sulfonyl halide such as p-toluenesulfonyl chloride in the presence of a tertiary amine such as N,N,N',N'-tetramethylethylenediamine,   without isolating an intermediate in the middle of each reaction stage.
Patent KR-19990014440-A (KR)
Title: 물을 이용한 공기 정화기
Filed: 1998-11-10
Abstract: 디젤 엔진 또는 소각장 및 공장 등에서 오염 물질을 대기 중에 방출하는 곳에서 그 오염된 공기를 흡입하여 1차 필터에서는 스텐레스 재질로 된 코일 형태와 자갈이나 모래 형태로 물이 흐르는 1차 필터를 통과하면서 큰 덩어리의 오염 물질을 거르고, 1차 필터를 통과한 오염된 공기는 밀폐된 공간 내에서 잠시 시간을 보내면서 높은 수압으로 분무된 여러 개의 노즐에 의해 형성된 안개 형태의 작은 물방울과 수없이 섞이면서 오염물질을 작은 물방울에 흡착 및 녹으면서 점차 큰 물방울을 이루면서 제2차 필터로 향한다. 
     2차 필터는 스텐레스 재질로 하단은 코일 형태로 밀집되어 있으며, 점차 위쪽으로 갈수록 더욱 밀집되게 되어있으며, 상단의 필터는 같은 재질로 된 수세미 형태로 오염된 공기와 접촉이 더욱 많게 되어 쉽게 물방울이 맺히도록 되어 있어 깨끗한 공기만이 통과 할 수 있도록 되어있다. 
     2차 필터 위쪽에는 팬으로 공기를 외부로 보낼수 있도록 한 모터와 프로펠러형 팬으로 구성되어 있다. 
     제2차 필터에 의해 물방울들이 서로 결합함으로 형성된 큰 물방울과 공간내에서 서로 결합한 물방울은 중력에 의해 밑으로 떨어지거나 흐르게 되어 다시 1차 필터를 통과하면서 물이 고이도록 되어있는 곳으로 향하여 외부로 방류되어 물 필터를 통과하고 펌프에 의해 다시 공기정화기 노즐로 반복 순환되게 하는 물을 이용한 공기 정화기이다.
Patent KR-20000032322-A (KR)
Title: Apparatus for transferring lead frame
Inventor: LEE DAE SEONG
IPC: H01L21/68
Filed: 1998-11-13
Abstract: PURPOSE: An apparatus for transferring a lead frame is provided to transfer lead frames of different width by one apparatus. CONSTITUTION: An apparatus for transferring a lead frame comprises a first fixed frame, a first moving frame and a regulator. The first fixed frame is installed on an upper face of a moving block to support one length-directional side of a first lead frame. The first moving frame opposite to the first fixed frame supports the other length-direction side of the first lead frame. The regulator regulates a distance between the first fixed frame and first moving frame according to width of the first lead frame. Thereby, the apparatus is able to transfer lead frames of different width.
Patent KR-20000033932-A (KR)
Title: Device and method for managing service composition in base of service session in multimedia communication network of wide area
Inventor: LEE GYEONG HYU
IPC: H04L12/24
Filed: 1998-11-26
Abstract: PURPOSE: A device and a method for managing a service composition in the base of a service session are provided to make new service and to supply various services of high quality to a user or a subscriber. CONSTITUTION: A managing device of service composition checks the existence of a composition demand of a second service from a user terminal when a first user terminal and a second user terminal use a first service. And, the existence of the session for the second service is checked for generating a service session for the second service. Then, a stream bridge for the first and the second services is generated for being bound to a stream interface of a stream controller according to the use state of service in the user terminal and the demand state of service composition. Therefore, the service composition is returned to an initial state according to the releasing demand of service composition in the user terminal.
Patent KR-20000034677-A (KR)
Title: Method for driving plasma display panel
Inventor: BAE GWANG BAE
IPC: G09G3/291
Filed: 1998-11-30
Abstract: PURPOSE: A method for driving a PDP(Plasma Display Panel) is provided to improve contrast by lowering the background brightness of a screen, to improve reproducibility of color by reducing the mixing rate of color and to display an image stably by improving writing rate of data. CONSTITUTION: A frame is separated into plural subsidiary fields for establishing different maintaining periods to each subsidiary field to display. Therefore, a method for driving a PDP uses a frame time division multiple method. Herein, a preliminary discharge is operated in a first subsidiary field of the frame for forming a space charge. Then, the preliminary discharge is operated in an intermediate subsidiary field for reforming the space charge. Therefore, the lowering of selective writing rate in data caused by disagreement of discharging conditions between cells in the PDP is prevented while improving contrast by reducing background brightness.
Patent KR-20000039796-A (KR)
Title: Method of forming metallic wiring of semiconductor device
Inventor: KIM HA YEONG
IPC: H01L21/28
Filed: 1998-12-16
Abstract: PURPOSE: A method of forming the metallic wiring of a semiconductor device is provided to form a contact hole in which a metal film is buried easily by one time etching process using a double resist pattern. CONSTITUTION: A method of forming the metallic wiring of a semiconductor device comprises steps of: depositing an insulation film(32) on a semiconductor substrate(31) and forming the first resist pattern(33) on the insulation film(32); applying a waterproof film(34) on the surface of the first resist pattern(33) and the insulation film(32); forming the second resist pattern(35), having width wider than the intervals between the first resist patterns on the waterproof film(34) on the first resist pattern(33); performing dry etching using the second and first resist patterns as an etching barrier to expose the semiconductor substrate(31) in the insulation film(32), while at the same time forming a contact hole(36) of which the top-side portion has a round type etching profile; forming a glue layer(37) on the insulation film(32) and the exposed portion of the semiconductor substrate(31); depositing a metal film burying the contact hole(36) on the glue layer(37); and polishing the metal film to form a metallic wiring(38) into the contact hole(36).
Patent KR-20000044029-A (KR)
Title: Telephone generating voice of caller phone number
Inventor: UH ZUI KUANG
IPC: H04M1/60
Filed: 1998-12-29
Abstract: PURPOSE: A telephone is provided to generate a voice of a caller's phone number during a call arrival, and make a remote user bring all the received phone numbers, stored at one phone, through another phone. CONSTITUTION: A telephone comprises a hybrid circuit(10), a caller ID receiver(12), a dual tone multiple frequency(DTMF) receiver(14), a controller(16), a voice IC(18), a voice generator(20), a selector(22), a memory(24), a display(26) and a key pad(28). The hybrid circuit(10) acts as an interface between a ring/tip line and an internal phone circuit. The caller ID receiver(12) receives a signal from a phone line via the hybrid circuit(10), and determines the caller's phone number according to the received signal. The DTMF receiver(14) determines a key shown by the DTMF signal, and if the key is once determined, the DTMF receiver(14) displays symbols and numbers composing the key. The voice IC(18) generates a voice signal by control of the controller(16), which is amplified by the voice generator(20). The selector922) alternatively generates the voice signal through the hybrid circuit(10) or the voice generator(20).
Patent KR-20000045963-A (KR)
Title: Apparatus for measuring opening degree of water gate by using optical type pulse encoder
Inventor: KWAK U SHIN
IPC: G01B11/26
Filed: 1998-12-30
Abstract: PURPOSE: An apparatus for measuring an opening degree of a water gate by using an optical type pulse encoder is provided to increase detection precision of a height of an opened water gate, output binary coded decimal (BCD) data by using metal-oxide-semiconductor field effect transistors (MOSFETs), and stop a motor by detecting precise closing of the water gate and remove of reduction gears. CONSTITUTION: An apparatus for measuring an opening degree of a water gate by using an optical type pulse encoder includes an encoder unit(100) for detecting an opening degree of the water gate by the optical type pulse encoder(130) attached on a rotation shaft for opening the water gate, a controller(200) for reading the opening degree of the water gate from an input pulse of the encoder unit and transmitting data to a central processing unit(220) and a display unit, and the display unit(300) for displaying the data of the controller and changing parameter of the controller.
Patent KR-20000047320-A (KR)
Title: Production process of amino class thermosetting resin for high water-proofing board
Inventor: HEO HYUK
IPC: C08G12/32
Filed: 1998-12-31
Abstract: PURPOSE: An amino class thermosetting resin is provided which is used as a glue to make boards in which the amount of discharging formaldehyde is greatly decreased and physical properties, especially in water-proofing, interior binding strength or so on are greatly improved. CONSTITUTION: A production process of amino class thermosetting resin is as follows: (1) a first addition process wherein an urea and a formaldehyde are added to make the mole ratio between aldehyde and amino group 2.5-3.5 in pH 7.5-9.0 and a temperature is slowly raised to 40-65°C; (2) a second addition process wherein the first addition reactant is controlled in pH 8-11 and a melamine is added at 40-65°C to make the mole ratio between aldehyde and amino group 1.5-2.0; (3) a first polymerization process which raises the temperature to 75-95°C to polycondensate; (4) a second polymerization process wherein the first polymerization reactant is controlled in pH 8-11 and 5-28 wt% of a melamine is added to polycondensate at 75-95°C; and (5) a third polymerization process wherein the first addition reactant is controlled in pH 7-10 and 0-5 wt% of urea or melanine is added to make the final mole ratio between aldehyde and amino group 1.0-1.8.
Patent KR-19990044273-A (KR)
Title: 실리카 생성물 및 자외선 경화 시스템
IPC: C09C1/30
Filed: 1996-07-20
Abstract: 실리카가 1.5 cm 3 /g 이상, 바람직하게는, 1.8 cm 3 /g 이상의 공극 부피를 갖는 무정형의 실리카이며, 왁스 코팅이 광택 제거제의 6 내지 15 중량 %의 범위에서 존재하고 합성 폴리에틸렌 왁스를 포함하는 것인, 왁스로 코팅된 실리카 광택 제거제.
Patent KR-19990071613-A (KR)
Title: 제초제로서 치환된 피롤리디논, 티아졸리디논 또는 옥사졸리디논
IPC: A01N43/44
Filed: 1996-11-28
Abstract: 본 발명은 화학식(1)의 화합물에 관한 것이다. 
     [화학식 1] 
     
       
     
     [식중, n은 0 또는 정수 1 - 5이고; 
     X는 할로겐, 니트로 또는 시아노, 또는 C 1-10 하이드로카빌 또는 C 1-10 하이드로카빌옥시 (둘 중 어느 쪽도 한 개 이상의 할로겐 원소로 치환 될 수 있음); 
     Y는 CH 2 , O 또는 S; 및 
     R 1 및 R 2 는 수소, C 1-6 알킬, C 1-6 할로알킬, C 2-6 알케닐, C 2-6 알키닐 또는 할로겐을 각기 나타냄]. 
     본 발명은 화학식(1)의 화합물의 제조 방법, 제초제 조성물 및 또한 이들의 사용 방법에 대하여 공개한다.