baber/WOPTO huggingface dataset:
Patent KR-20000007245-A (KR)
Title: Method of generating error detecting codes
Inventor: KIM JUN WOO
IPC: G06F11/00
Filed: 1998-07-01
Abstract: PURPOSE: Since the parity check checksum, one of the data communication error checking methods has the high probability of miscalculation, the precision of error checking is low. And the detecting speed is slow due to the complicated generation algorithm of error detecting code. CONSTITUTION: The method comprises of: One word data composed of 4 bits(1 unit) making a circular shift to the left(step 12) to obtain data rotated to the left(14), word data(11) making a circular shift to the right(step 13) to obtain data rotated to the right(15), obtaining the exclusive OR(step 16) of the word data(11), the data rotated to the left(14), and the data rotated to the right(15), and setting it as the error detecting code(17). Therefore the method is provided to improve the precision of error checking through the low probability of miscalculation, and to increase the speed of error checking through the simple process of calculation.
Patent KR-20000007891-A (KR)
Title: Timing measuring apparatus of fuel system of diesel engine
Inventor: LEE MONG HEE
IPC: G01M15/00
Filed: 1998-07-08
Abstract: PURPOSE: A timing measuring apparatus of fuel system of diesel engine is provided to realize the accurate setting in narrow area within engine room, therefore to reduce assembling time and to accurately measure. CONSTITUTION: The present invention discloses a timing measuring apparatus of fuel system of diesel engine comprising:a displacement detecting unit coupled to a groove for controlling the timing of an injection pump, and detecting the moving displacement of the injection pump plunger as linear reciprocating displacement; a displacement measuring unit transmitting the linear displacement according to the flow rate of the noncompressible fluid delivered according to the linear reciprocating displacement of the displacement detecting unit into a dial gauge so as to measure timing; and a displacement transmitting unit connected between the displacement detecting unit and the displacement measuring unit.
Patent KR-20000010236-A (KR)
Title: Structure for preventing ventilating opening of bus from leaking
Inventor: LIM CHAE JOON
IPC: B60H1/26
Filed: 1998-07-31
Abstract: PURPOSE: A structure for preventing a leakage is provided to prevent the leakage of a rainwater into a bus by forming a vent aperture for flowing in an external air and a discharging aperture for discharging the rainwater in the upper member of a natural ventilating structure flowing in the external air into the bus. CONSTITUTION: A structure(10) of a ventilating opening is formed by a side upper unit horizontal filler(20), roof upper and lower unit horizontal fillers(30), (30a), and a rainwater blocking member(40). Herein, the externals of the side upper unit horizontal filler and the roof upper and lower unit horizontal fillers contain the inside of the rainwater blocking member by welding. And the rainwater blocking member is composed of a perpendicular member(41) weld fixed to the side upper horizontal filler and the roof upper and lower unit horizontal fillers and a blocking member(42) being bend up formed on the outside of the upper end of the perpendicular member for blocking the rainwater running down from the ceiling of a bus from flowed into the bus.
Patent KR-20000018468-A (KR)
Title: Epoxy resin composition used in sealing semiconductor element
Inventor: KIM JO KYUN
IPC: C08L63/00
Filed: 1998-09-02
Abstract: PURPOSE: An epoxy resin composition used in sealing semiconductor element is provided which gives advantages in a reliance and molding character by highly charging inorganic filler, also improves moisture absorption resistance and tenacity by introducing epoxy resin. CONSTITUTION: An epoxy resin composition used in sealing semiconductor element comprises epoxy resin(EQ 1) of 3.5-15.0 wt.%, hardener of 2.0-6.5 wt.%, 0.1-0.3 wt.% of hardening accelerator, 0.1-1.5 wt.% of denatured silicon oil and 80-87 wt.% of inorganic filler.
Patent KR-20000018758-A (KR)
Title: Permanent magnet fixing structure of disk-shaped motor
Inventor: PARK JIN SU
IPC: H02K1/12
Filed: 1998-09-04
Abstract: PURPOSE: A permanent magnet fixing structure of a disk-shaped motor is provided to securely fixing a permanent magnet coupled to a rotor disk composing a rotor of a motor. CONSTITUTION: A step-typed detect hole having multiple steps to a disk is formed in a circular rotor disk having a regular thickness and outer diameter. A permanent magnet having a predetermined shape and thickness is inserted into the detect hole. The detect hole into which the permanent magnet is inserted is sealed by a sealing member to support one side of the permanent magnet to an end chin of the detect hole and the other side thereof to the sealing member.
Patent KR-20000019072-A (KR)
Title: Method for forming metal wiring of semiconductor device
Inventor: JUNG HO SUCK
IPC: H01L21/28
Filed: 1998-09-08
Abstract: PURPOSE: A method is to form a metal wiring of a semiconductor device not inducing the short between metal wiring layers. CONSTITUTION: In the method of the present invention, a first metal wiring layer(120) comprising a plurality of wiring is formed on a semiconductor substrate(110), and inter-metal layer insulation film(132) covering the first metal wiring layer is formed as revealing the top surface of the semiconductor substrate between each wiring of the first metal wiring layer. The top surface of the resulting structure is planarized by filling a first insulation film(134) on the revealed semiconductor substrate, and the planarized structure is covered with a second insulation film(136). A second metal wiring layer is formed on the second insulation film.
Patent KR-19990007699-A (KR)
Title: 지폐뭉치 묶음용 띠지
Filed: 1998-10-22
Abstract: 본 발명은 띠지에 관한 것으로, 종래의 것은 지폐뭉치를 묶기가 번거롭고 쉽게 풀릴 우려가 있을 뿐만 아니라 지폐뭉치를 묶은 상태에서 상면에 매듭이 생겨 여러 개의 지폐뭉치를 포개어서 보관하기가 곤란하게된다는 단점을 가지고 있는 데 반해, 본 발명에 따른 띠지는 소정 길이의 띠, 띠의 일측에 도포된 제 1접착층 및 띠의 타측에 도포되어 제 1접착층에 접착 가능한 제 2접착층을 포함하는 구성으로 이루어져 있어, 지폐뭉치를 쉽게 묶을 수 있도록 해주고 풀릴 염려가 없으며 매듭이 생기지 않는다는 장점을 가지고 있고, 주로 지폐뭉치를 묶는 데 사용된다.
Patent KR-20000033233-A (KR)
Title: Soil strut housing for reducing tire noise
Inventor: CHOI DAE IK
IPC: B62D65/00
Filed: 1998-11-20
Abstract: PURPOSE: A soil strut housing is provided to prevent noise caused by rotation of a tire from amplifying while being resonant inside the soil strut housing for noise reduction. CONSTITUTION: A soil strut housing(1) installs a sound absorber(3) on the inner circumference. The sound absorber is soft and forms a sound absorbing plate(3) made from a fiber material. The sound absorbing plate forms many uneven grooves(32) on the surface. The uneven grooves form for enlarging surface area such as a wave simple unevenness. Also the sound absorbing plate is made from lumber, plastic, polyurethane, FRP resin and so on. The shape of the uneven grooves are also various. When the sound absorbing plate forms holes(33) in parallel with the uneven grooves, the noise reduction efficiency is more enhanced.
Patent KR-20000033762-A (KR)
Title: Wet station including chemical bath support
Inventor: KIM TAE HWAN
IPC: H01L21/304
Filed: 1998-11-25
Abstract: PURPOSE: A wet station including a chemical bath support is provided for preventing a leakage of chemicals used for washing and for increasing the life-cycle of the sink. CONSTITUTION: A wet station(200) including a chemical bath support includes a chemical bath(110), a holder(130), and a sink(140). The chemical bath(110) includes a pair of pipe for inlet and outlet of chemicals(112). The holer(130) supports the chemical bath at the lower part of the chemical bath(110). The sink(140) is supported vertically by the holder(130). The upper guide fixing the chemical bath(110) is exposed through the surface of the chemical bath support. The lower guide fixing the holder(130) is exposed through the lower surface of the chemical bath support. The chemical bath support is inserted between the chemical bath(110) and the holder(130). The chemical emitted from the chemical bath(110) is drained by the chemical bath support.
Patent KR-20000034139-A (KR)
Title: Process for preparing sintered ores having the possibility of the enhancement for the degree of recovery
Inventor: KIM SEONG WAN
IPC: C22B1/16
Filed: 1998-11-27
Abstract: PURPOSE: A process for preparing sintered ores is provided, which is utilized in the DWIGHT LLOYD to have a homogeneous shape and stress, to improve the rotatory force and the degree of recovery. CONSTITUTION: The process is comprised of a first filing step, a second filing step and a sintering step. The first step is characterized by filing a standard formulation source to the height of about 80 to 90%, based on the height from the bottom to the top of the sintering port. The second step is performed in that the remaining being from the first step is filed by the additional high melting formulation source containing melting agents and fuels. The standard source is comprised of 17.8% of melting agent slags and 3.8% of coke powders, and the additional high melting source is of 18.4 to 19.3% of melting agent slags and 4.4 to 5.6% of coke powders, based on the weight of entire source.
Patent KR-20000037957-A (KR)
Title: Alveolar bone extension device
Inventor: OH HEUI GYUN
IPC: A61C7/10
Filed: 1998-12-03
Abstract: PURPOSE: An alveolar bone extension device which can ensure the stability of fixed state and adjust the distance between alveolar bone and a jawbone due to only being exposed a distance adjusting pin to the mouth, thus having effect of easy maintenance of mouth cleaning, and reduced uneasiness, damage to soft tissue and risk of being infected, is provided. CONSTITUTION: An alveolar bone extension device is characteristically comprised of a pair of fixing segment(23,25) being fixed to each alveola bone and jawbone, distance adjusting pins connected to the each fixing segment for extending the distance between alveolar bone and jawbone to adjust the distance, and guide rods(28,29) which guide the movement of the segments when adjusting the distance between the fixing segments.
Patent KR-20000038616-A (KR)
Title: Three-phase power source system
Inventor: KIM YONG MO
IPC: H02M1/00
Filed: 1998-12-08
Abstract: PURPOSE: A three-phase power source system is provided to convert the polarization by using a mode converting switch. CONSTITUTION: A three-phase power source supplying section(10) supplies a three-phase power source of X-phase, Y-phase, and Z-phase. A three-phase power source device(20) is connected to the X-phase, Y-phase, and Z-phase terminals(40,42,44) of the three-phase power source supplying section(10) and the terminals. The three-phase power source device(20) drives through a polarization conversion of the three-phase. A mode conversion switch(50) connects the terminals of the three-phase power source device(20) which corresponds to the Y-phase and Z-phase terminals, and converts the polarizations of the Y-phase and Z-phase.
Patent KR-19990062893-A (KR)
Title: 폐산의 열적 재생 방법
IPC: C01B17/88
Filed: 1998-12-08
Abstract: 본 발명은 금속의 건식 야금(乾式冶金, pyrometallurgy) 공정에서 생성되는 이산화유황을 함유한 가스의 스크러빙(scrubbing)으로 생성되는 폐산(廢酸, spent acid)의 열적 재생 방법에 관한 것이다.    본 발명의 방법에 따르면, 폐산은 농축되어 1차 제련 퍼니스(furnace)의 가스 공간으로 공급되며, 폐산의 열적 재생에 필요한 에너지를 제련 공정에서 생성된 뜨거운 가스의 열 함량으로부터 얻는다.
Patent KR-20000039652-A (KR)
Title: Reflection type liquid crystal display and fabricating method thereof
Inventor: LEE JONG HOON
IPC: G02F1/1335
Filed: 1998-12-15
Abstract: PURPOSE: A reflection type liquid crystal display and a fabricating method thereof are provided to use a natural light to implement a TFT-LCD(thin film transistor-liquid crystal display). CONSTITUTION: A reflection type liquid crystal display includes a substrate(1), a semiconductor layer, a gate electrode(54), a gate dielectric layer, a preservation layer(80), an ohmic contact, a source and drain electrodes(62) and a reflection electrode. The substrate(1) includes a dielectric surface. The semiconductor layer is formed on the dielectric surface and a channel region between source and drain regions. The gate electrode(54) is formed on the channel region. The gate dielectric layer is formed between the gate electrode(54) and the channel region. The preservation layer(80) covers the gate electrode(54) and a part of the source and drain regions around the gate electrode. The ohmic contact touches each of the source and drain regions. The source and drain electrodes(62) are formed on the preservation layer and the ohmic contact, respectively. The reflection electrode is extended from the drain electrode.
Patent KR-19990037602-A (KR)
Title: 열교환기용 브레이징 치구
Filed: 1998-12-23
Abstract: 열교환기용 브레이징 치구를 개시한다. 본 발명의 열교환기용 브레이징 치구는, 적층된 방열핀/코어 가조립체가 장착되는 공간부를 가지며 상호 대향되는 측에 측판이 구비된 본체와, 상기 본체의 공간부에 삽입되며, 소정의 하중을 가지고 공간부에 장착된 방열핀/코어 가조립체를 가압하는 누름판과, 상기 누름판을 상기 본체의 측판에 소정길이 승강 가능하게 결합하는 결합수단을 포함하여 된 것을 특징으로 하며 자동화에 대응이 가능하고 양호한 브레이징 결과를 제공하는 이점이 있다.
Patent KR-20000042188-A (KR)
Title: Apparatus for measuring friction coefficient of board using draw bead
Inventor: HAN SOO SIK
IPC: G01N19/02
Filed: 1998-12-24
Abstract: PURPOSE: An apparatus for measuring the friction coefficient of a board is provided, which uses a draw bead and is improved in the precision of measured value. CONSTITUTION: A apparatus comprises draw beads (110,111) which bends and straighten a board; an imprint part (12) which imprints the board passed through the draw beads (110,111)at the set speed; a pressing part (13) which ascends and descends the roller stopping apparatus (111) of draw beads (110,111) to maintain the bended depth of the board constantly; and a body (140) where the pressing part (130) and the imprint part (120) are equipped. The friction coefficient of a board is measured by detecting the imprint weight (a, c) and the pressed weight (b, d) of the roller (111) by using the weight sensors (122,132) of the imprint part (120) and the pressing part (130) when the roller (111) of the draw beads (110,111) rotate freely.
Patent KR-20000042471-A (KR)
Title: Electrostatic discharge circuit
Inventor: LEE HYEON U
IPC: H01L27/04
Filed: 1998-12-24
Abstract: PURPOSE: An electrostatic discharge(ESD) circuit is provided to optimize a parasitic capacitance, and to improve discharging capacity, by discharging static electricity inputted to a pad, to a ground through a negative bias line. CONSTITUTION: An electrostatic discharge(ESD) circuit comprises a first electrostatic charge passing element, a second electrostatic charge passing element, electrostatic discharge controlling element, a first switching element, a second switching element and a third switching element. The first electrostatic charge-passing element passes an electrostatic charge coming to an input pad to a negative bias line. The second electrostatic charge-passing element passes an electrostatic charge coming to a data input/output pad, to the negative bias line. The electrostatic discharge controlling element controls flow of an electrostatic charge directly discharging from the data input/output pad to a ground line, which is connected between the drain terminal of a pull-down metal oxide semiconductor transistor and the data input/output pad. The first switching element turns on the electrostatic charge discharged to the negative bias line, to the power voltage terminal. The second switching element turns on the electrostatic charge discharged to the negative bias line, to the ground voltage terminal. The third switching element increases charge dispersing capacity discharged to the power and ground voltage terminals, which is turned on by increase of potential of the negative bias line.
Patent KR-20000045873-A (KR)
Title: Pad structure of semiconductor device for testing contact defect of power pin
Inventor: SON JIN SEOK
IPC: H01L27/00
Filed: 1998-12-30
Abstract: PURPOSE: A pad structure of a semiconductor device for testing a contact defect of a power pin is to independently confirm a probing state of each power pad with respect to probes for detecting power of a probe card. CONSTITUTION: A pad structure of a semiconductor device for testing a contact defect of a power pin comprises a first pad(10a) for receiving a power source from the outside, a second pad(10b) for inputting/outputting a data, and a third pad for receiving a grounding power source. In the pad structure, a switch is provided between the first and second pads to electrically connect the first and second pads. The switch is turned off when a circuit is normally operated and turned on when a pin test operation is started. If the testing operation is started and the switch is turned on, a desired voltage is applied to the second pad. At this time, a currency is detected to test the contact state between the first pad and the probes of the probe card.
Patent KR-19990036413-A (KR)
Title: 전자부품 공급장치
IPC: B23P19/00
Filed: 1997-06-23
Abstract: 스틱내에 서로 인접하여 수납되어 있는 전자부품을 1개씩 분리공급할 때에, 전자부품이 인단면 형상이나 전자부품 성형시에 인접단면에 생긴 버등의 영향을 받지 않고 분리공급가능한 전자부품 공급방법 및 그 장치를 제공한다.  분리수단(6)은 경사슈트(4)선단에 선두의 전자부품(2)이 이도되는 일단 낮은 단차부(20)와, 후속의 전자부품(2)을 상방에서 가압하여 상기 경사슈트(4)에 따라 후방(c)으로 이동시키는 암부(22)를 갖는다.
Patent KR-19990067238-A (KR)
IPC: A61F13/00
Filed: 1996-10-16
Abstract: The present invention provides an absorbent article which includes a first absorbent article and a second absorbent article releasably secured to one another. The first and second absorbent articles are releasably secured to one another by at least one periphery securement member that is positioned along and extends outwardly from a portion of the periphery of the second absorbent article.
Patent KR-19990082273-A (KR)
Title: 신규 제형
IPC: A61K31/58
Filed: 1997-11-28
Abstract: 40㎍ 이하의 부데소니드를 함유하는 신규한 계량 단위 투여 제형 뿐만 아니라, 그의 조성물 및 그의 코 질환 치료 용도를 개시한다.
Patent KR-19990087256-A (KR)
Title: 가역성 및 비가역성 수계 피복물
IPC: C08F220/04
Filed: 1997-01-14
Abstract: 수계 용매 및, 하나 이상의 측쇄형 약산 그룹과 중탄산염 짝이온과 결합되어 있는 하나 이상의 측쇄형 강양이온성 그룹을 함유하는 주쇄를 가짐을 특징으로 하는 수용성 또는 수분산성 중합체를 포함하는 조성물이 기재되어 있다.  당해 조성물을 기재에 도포함으로써 유해 기체를 방출하지 않는, 급속히 지촉건조(指觸乾操, dry-to-the touch)상태가 되는 내수계 피복물을 제조할 수 있다.  피복물을 영구적이거나, 초산 또는 시트르산의 수용액과 같은 약산을 첨가함으로써, 제거가능한 상태로 제조할 수 있다.
Patent KR-19990087508-A (KR)
Title: 반도체 레이저
IPC: H01S5/065
Filed: 1997-03-03
Abstract: 반도체 레이저가, 활성층과 포화 가능 흡수층을 적어도 구비하고, 상기 포화 가능 흡수층에서의 압축 변형량은 상기 활성층에서의 압축 변형의 값보다도, 약 0.3% 혹은 그 이상 커지도록 설정되어 있다.  혹은, 반도체 레이저가, 활성층과 포화 가능 흡수층과 상기 포화 가능 흡수층의 근방에 배치된 광가이드층을 적어도 구비하며, 상기 포화 가능 흡수층에서의 압축 변형량은 상기 활성층에서의 압축 변형의 값보다도, 약 0.3% 혹은 그 이상 크다.
Patent KR-20000064552-A (KR)
Title: 직렬 및 병렬 광학 링크용 vcsel식 다중 파장 송신기 및수신기 모듈
IPC: H04B10/43
Filed: 1997-11-19
Abstract: 광전자 모듈은 공통의 중앙 세로 축을 따라 동일선상에 배열되는 하나 이상의 VCSEL 송신기 및/또는 광검출기를 포함한다.  상이한 파장의 광은 단일 광섬유나 자유 공간 광학 링크에 광학 결합된 광전자 모듈에 의해 수신 및 송신될 수 있다.  광전자 모듈은 두 개의 파장을 수신하고 하나의 파장을 송신할 수 있거나, 광학 링크내에서 두 개의 파장을 송신할 수 있다.  VCSEL 송신기는 수직으로 집적된 펌프 VCSEL에 의해 광학 펌프될 수 있다.  병렬 광학 링크는 단일 광섬유의 각 이중 채널에 대한 송신 및 수신을 제공한다.  병렬 광학 링크는 광섬유의 어레이, 제1 파장을 갖는 레이저 신호를 송신하고 제2 파장을 갖는 레이저 신호를 수신하도록 광섬유의 어레이에 광학 결합된 광전자 모듈의 제1 어레이 및 제2 파장을 갖는 레이저 신호를 송신하고 제1 파장을 갖는 레이저 신호를 수신하도록 광섬유의 어레이에 광학 결합된 광전자 모듈의 제2 어레이를 포함한다.  다중 채널 데이터 분배 시스템은 중앙 분배 지점과 상기 중앙 분배 지점에 광학 링크된 다수의 노드 사이의 데이터의 양방향성 분배를 할 수 있게 한다.
Patent KR-20000064561-A (KR)
Title: 멈춤블록을갖춘신축자재한레일
IPC: A47B88/493
Filed: 1997-01-08
Abstract: 본 발명은 멈춤블록을 갖춘 신축자재한 레일에 관한 것으로, 이 포개어 끼워질 수 있는 레일은 제 1구성부(1)가 제 2구성부(2)에 그 사이에 개재된 제 1볼베어링(3)을 매개로 미끄러질 수 있게 장착된 대략 C자형으로 이루어진 구성부들을 갖추고서, 상기 제 2구성부에는 레일의 연장방향으로 형성된 볼베어링의 앞쪽에 멈춤블록(5)이 위치되되, 이 멈춤블록은 레일이 연장될 때 상기 제 1구성부상의 안쪽으로 향한 제 1돌출부(18)와 접촉하게 될 수 있는 제 1볼베어링을 향하는 측면부근에 형성된 제 1탄성수단(9)과, 레일이 수축될 때 제 1구성부상의 안쪽으로 향한 제 2돌출부(17)와 접촉하게 될 수 있는 멈춤블록의 반대편에 형성된 제 2탄성수단(8)을 갖추고 있으며, 상기 제 1돌출부(18)와 제 2돌출부(17)는 레일이 완전히 수축된 위치에 있을 때 제 1볼베어링의 반대편에 위치하되, 상기 제 1돌출부는 상기 제 1볼베어링을 통과하여 이동할 수 있도록 된 것이다.
Patent KR-20000010583-A (KR)
Title: Composition for catching and detecting mites, and method for catching and detecting mites with the same
Inventor: KAMEZAKI HIROKI
IPC: A01N53/08
Filed: 1997-04-22
Abstract: PURPOSE: A composition containing 3-phenoxybenzyl chrisanthemate has an effect on capturing and detecting for mites and products containing the same are widely used for relative industries. CONSTITUTION: A composites containing 0.37% of 3-phenoxybenzyl-sis-trans chrisanthemate is excellent in making mites move out to a surface being alive in a short time. Considering of existence and density of the mites, an adhesive substance is needed to mixed compound such as sheets, papers and films besides insecticides, killing ticks and aromatics.
Patent KR-20000016165-A (KR)
Title: Thermosetting pressure-sensitive adhesive and adhesive sheets made by using the same
Inventor: HOSOKAWA KAZUHITO
IPC: C09J163/00
Filed: 1997-05-28
Abstract: PURPOSE: An adhesive comprising a monomer mixture of alkyl (meth)acrylates and unsaturated acid, a polyfunctional (meth)acrylate and an epoxy resin is provided which can easily be adhered temporarily to an adherent at ordinary temperatures and has good heat resistance. CONSTITUTION: A thermosetting pressure-sensitive adhesive which essentially consists of a product of photopolymerization of a composition comprising (a) 100 parts by weight of a monomer mixture comprising 70 to 99 wt.% of alkyl (meth)acrylates wherein the alkyl group has on the average 2 to 14 carbon atoms and 30 to 1 wt.% of an ethylenically unsaturated acid copolymerizable therewith,(b) 0.02 to 5 parts by weight of a cross-link agent comprising a polyfunctional (meth)acrylate, (c) 0.01 to 4 parts by weight of a photopolymerization initiator, and (d) 5 to 30 parts by weight of an epoxy resin and being substantially free from any curing agent for the epoxy resin (d), and which can easily be bonded tentatively to an adherent at ordinary temperatures by virtue of its pressure-sensitive adhesive properties, can be cured by heating in a short time to exhibit high bond strength and heat resistance, and is excellent in storage stability; and adhesive sheets made by using the same.
Patent KR-20000016576-A (KR)
Title: Dna sequences encoding phytases of ruminal microorganisms
Inventor: CHENG KUO JOAN
IPC: A23K1/165
Filed: 1997-06-13
Abstract: PURPOSE: A host cell for representing DNA representing phytases and a method for generating transformed host cell are provided. CONSTITUTION: Phytases derived from ruminal microorganisms are provided. The phytases are capable of catalyzing the release of inorganic phosphorus from phytic acid. Preferred sources of phytases include Selenomonas, Prevotella, Treponemaand Megasphaera. A purified and isolated DNA encoding a phytase of Selenomonas ruminantium JY35 (ATCC 55785) is provided. Recombinant expression vectors containing DNAs encoding the phytases and host cells transformed with DNAs encoding the phytases are also provided. The phytases are useful in a wide range of applications involving the dephosphorylation of phytase, including, among other things, use in animal feed supplements.
Patent KR-19990045783-A (KR)
Title: 드릴용절삭공구
Filed: 1999-01-07
Abstract: 본 발명은 드릴용 절삭공구의 끝단에 형성된 절삭날(3)이 원주상에 교호로 배열되는 제1, 제2절삭날(31)(32)로 형성되고, 상기 제1절삭날(31)은 내측단이 외측단 보다 돌출되고 상기 제2절삭날(32)은 외측단이 내측단 보다 돌출되어 제1, 2절삭날(31)(32)이 피가공물의 절삭부위의 내, 외주면을 순차적으로 연속하여 절삭하기 때문에 상기 절삭날의 형상이 단순하면서도 적은 동력으로 구멍을 정밀하게 천공할 수 있고, 절삭공구의 제조비용이 절감되며 수명이 연장되고, 홈(5) 및 골(6)의 경사각도가 칩을 용이하게 배출할 수 있도록 설정되어 있어 절삭 효율이 상승되는 효과가 있다.