baber/WOPTO huggingface dataset:
Patent KR-20000033638-A (KR)
Title: Ligand of catalyst for hydroformylation, catalyst containing the same and method for hydroformylation of mixed olefin using the same
Inventor: JUN JONG KI
IPC: C08F4/02
Filed: 1998-11-25
Abstract: PURPOSE: A ligand used for a hydroformylation catalyst and a catalyst for hydroformylation consisted of the ligand and rhodium and a process for preparing aldehyde containing one carbon too many by the hydroformylation of mixed olefin are provided which have industrial utility for the manufacture of the aldehyde. CONSTITUTION: Novel ligand of tetrakis-(2,4-I-tertiary-butylphenyl)-4,4-biphenylphosphonite used for a hydroformylation catalyst and a catalyst for hydroformylation consisted of the ligand and rhodium are provided. Also provided is a process for manufacturing aldehyde containing one carbon too many by the hydroformylation of mixed olefin obtained from the low polymerization of lower olefin using the catalyst. The catalyst used the ligand has high recovery rate as well as excellent activity and selectivity such that it can carry out the hydroformylation effectively and economically.
Patent KR-20000034098-A (KR)
Title: Apparatus for driving turbo charger of diesel engine
Inventor: BANG GEON MO
IPC: F02B37/00
Filed: 1998-11-27
Abstract: PURPOSE: An apparatus for driving a turbo charger of a diesel engine is provided to enhance the output of an engine with compressed air by driving a compressor fan with residual electricity when a diesel vehicle is traveling. CONSTITUTION: An isolation valve(58) is opened to isolate an entrance of an intake manifold(52) if a switch is turned on to drive a turbo charger. At the same time, a compressor fan(54) is started to generate compressed air. The compressed air is supplied to a cylinder through the intake manifold through an air outlet(56) so that the charging efficiency of an engine is improved. After that, the turbo charger is stopped by turning off the switch. The isolation valve closes the air outlet, and an air feed pipe(60) connected with the intake manifold is opened so that the air is normally supplied to the intake manifold.
Patent KR-20000034691-A (KR)
Title: Barrier rib of plasma display panel
Inventor: KIM HWA SU
IPC: H01J11/36
Filed: 1998-11-30
Abstract: PURPOSE: A barrier rib of a plasma display panel(PDP) is provided to improve luminous brightness by realizing a smooth movement of electric charge without decrease of effective area. CONSTITUTION: In a PDP(plasma display panel), barrier ribs(1) are longitudinally extended on a rear board(P2), facing the front board(P1). A groove(2) is formed on an upper part of the barrier rib(1) along an extending direction of the barrier ribs(1), whereas plural slots(3) are formed on both sides of the groove(2) at a right angle to the groove(2). Therefore, two pixels on both sides of the barrier rib(1) communicates with each other through the groove(2) and the slots(3). An electric charge in a discharge space(V) charges a discharge gas in the slots(3) of the barrier rib(1), and then the discharge gas in the slots(3) charges a discharge gas in the groove(2). Therefore, the electric charge in the discharge space(V) of one pixel is transmitted to adjacent pixel through the slots(3) and the groove(2).
Patent KR-20000037935-A (KR)
Title: Method for testing optical path of optical transmission equipment and apparatus for connecting testing apparatus of optical path
Inventor: AHN IN TAEK
IPC: H04B10/07
Filed: 1998-12-03
Abstract: PURPOSE: A method for testing an optical path of optical transmission equipment and an apparatus for connecting a testing apparatus of an optical path are provided to reliably test, measure, and watch the characteristic of the optical path by enabling to test the optical path with the officially recognized. CONSTITUTION: A normal mode or a test mode is set up according to an order of a tester. If a normal mode is set up, an apparatus for connecting a testing apparatus(306) checks an error by providing the testing apparatus with an electric signal following an optical signal received from an optical path with watching and testing the optical path in an optical transmission equipment. If a test mode is set up, the apparatus for connecting a testing apparatus forms a path between the optical path connected with the optical transmission equipment and the testing apparatus for performing a test through the optical path.
Patent KR-20000039255-A (KR)
Title: Apparatus for regulating the position of mirror of optical system
Inventor: MIN JI HONG
IPC: G02B7/00
Filed: 1998-12-11
Abstract: PURPOSE: An apparatus for regulating the position of a mirror of an optical system is provided to minutely regulate the position and the angle of a mirror by using a regulating screw and regulating jigs. CONSTITUTION: A mirror base(210) is installed at both end portions of a curved mirror(32) to support the curved mirror(32). A bracket(220) is installed outside of an optical system housing(50), and is engaged with the mirror base(210). A Y-direction regulating screw(230) regulates the central position of the curved mirror(32). A Z-direction regulating jig(240) is fixed to the housing(50), and moves the curved mirror(32). An angle regulating jig(250) is fixed to the bracket(220), and regulates the reflection angle of the curved mirror(32).
Patent KR-20000041428-A (KR)
Title: Method for fabricating tantalum oxide film capacitor using plasma chemical vapor deposition
Inventor: OH SOO JIN
IPC: H01L27/108
Filed: 1998-12-22
Abstract: PURPOSE: A method for fabricating a Ta2O5 film capacitor using PECVD(Plasma Chemical Vapor Deposition) method is provided which can reduce the process steps and can crystallize the Ta2O5 film in a relatively low temperature. CONSTITUTION: A method for fabricating a Ta2O5 capacitor using PECVD removes impurities in a Ta2O5 film at a temperature lower than in a diffusion furnace and at the same time crystallizes the Ta2O5 film, by performing Ta2O5 treatment using plasma energy by controlling the chamber temperature and the plasma density adequately using a PECVD chamber after forming the Ta2O5 film. The method includes the steps of: forming a bottom electrode(1); forming an amorphous Ta2O5 film(3A) on the bottom electrode; treating the Ta2O5 film in the oxygen atmosphere; removing impurities in the Ta2O5 film and at the same time crystallizing the amorphous Ta2O5 film by thermally processing the Ta2O5 and at the same time plasma processing; and forming a top electrode(4) on the Ta2O5.
Patent KR-20000042029-A (KR)
Title: Low water level alarm system of supplementary tank for automobile cooling water
Inventor: NA MOON YONG
IPC: F01P11/18
Filed: 1998-12-24
Abstract: PURPOSE: A low water level alarm system of supplementary tank for automobile cooling water is provided in which a guide shaft to be installed in the supplementary tank is made up of steel material so as to thereby achieve a smooth up-and-down movement of a floater, thus preventing an erroneous operation of an alarm lamp. CONSTITUTION: A low water level alarm system having a cover(12) and a main body(14) to form a cooling water reservoir(16), the alarm system comprising a steel guide shaft(20) both ends(22, 22a) of which are fixed to fixing grooves formed at a bottom surface of the main body(14) such that the shaft(20) protrudes from the bottom surface of the main body(14), a floater(30) having guide holes(32, 32a) into which the shaft(20) is inserted in such a manner that the floater(30) moves up and down in accordance with a level of the cooling water, the floater(30) having at a lower surface thereof a magnet(36), and a sensor arranged in the bottom surface of the main body(14) for sensing a low level of cooling water when contacted the magnet(36) of the floater(30).
Patent KR-19990063546-A (KR)
Title: 디지털 기록매체의 저작권을 보호하는 방법 및 장치, 그리고,그 디지털 기록매체
IPC: G11B20/10
Filed: 1998-12-29
Abstract: 저작권보호를 위한 디지털 기록매체는, 데이터기록영역의 적어도 일부분에 암호화시스템을 이용하여 암호화된 정보가 기록된 데이터기록영역, 및 데이터기록영역에 기록된 암호화된 정보를 복호하기 위한 암호키가 기록된 복제불가영역을 구비한다.  이 디지털 기록매체를 불법으로 복제하는 경우, 그것에 기록된 테이블식별정보가 손상된다.  따라서, 이 디지털 기록매체를 복제한 기록매체에 기록된 정보는 정상적으로 재생되지 않는다.  그리고, 이 디지털 기록매체를 위한 재생장치는, 전술의 암호화시스템을 저장하는 메모리, 디지털 기록매체에 기록된 데이터를 읽어내는 판독기, 및 판독기에 의해 디지털 기록매체로부터 읽혀진 암호키에 근거하여, 디지털 기록매체에 기록된 암호화된 정보를 복호하는 복호기를 포함한다.
Patent KR-20000046296-A (KR)
Title: Connector for communication devices
Inventor: KIM DAE HEI
IPC: H01R24/00
Filed: 1998-12-31
Abstract: PURPOSE: A connector for communication devices is provided to simplify assembly and disassembly of the connector for communication devices and to reduce electromagnetic interference. CONSTITUTION: A connector for communication devices includes a connector body(58), a nut(57), and a washer(58). The connector body(58) is implemented so as for a port of the inner portion of the communication devices to be exposed to outside of itself. The nut(57) is bound on the outside of the connector body. The washer(58) reinforce the binding power of the nut. The connector for communication devices further includes a bead(54). The bead is implemented on an outside diameter of an inner pin of the connector body.
Patent KR-20000047114-A (KR)
Title: Folded groove and method therefor
Inventor: KWON OH JUN
IPC: G02B6/00
Filed: 1998-12-31
Abstract: PURPOSE: A folded groove and method therefor are provided to prevent generation of focused external force and to reduce leakage of optical signals due to the external force by forming a specific room so as for an optical fiber ribbon laminatedly inserted in the inside to constantly move, and to wind a lot of grooves on a winding drum. CONSTITUTION: A pair of notch grooves(11) separated at a constant interval are arranged to a length direction on a flexible member having a constant width. A folded groove forms a specific room into which a plurality of optical fiber ribbons(20) are laminatedly inserted by putting up both ends around the notch grooves(11).
Patent KR-20000047124-A (KR)
Title: Apparatus for driving touch image sensor of facsimile
Inventor: HAN DAE HEE
IPC: H04N1/00
Filed: 1998-12-31
Abstract: PURPOSE: An apparatus for driving a touch image sensor of a facsimile is provided to enable the touch image sensor to read an image with resolution higher than a predetermined level. CONSTITUTION: An apparatus for driving a touch image sensor of a facsimile includes a touch image sensor(10), a guide member(40) and an operation member(50). The touch image sensor(10) is implemented so as to be normal to a paper translation direction. The guide member(40) is implemented between the touch image sensor(10) and the frame(12) to make the round translation of papers more stable. The operation member(50) receives the dynamic power applied to a paper feed roller(14) and operates so as to move the touch image sensor(10) horizontally.
Patent KR-19990036112-A (KR)
IPC: A61K8/02
Filed: 1996-08-02
Abstract: PCT No. PCT/FR96/01229 Sec. 371 Date Feb. 4, 1998 Sec. 102(e) Date Feb. 4, 1998 PCT Filed Aug. 2, 1996 PCT Pub. No. WO97/05856 PCT Pub. Date Feb. 20, 1997A gel, in a proportion of 1 to 20% of the finished product, contains at least one polyol, one (meth)acrylic acid polymer and one fluidification solvent of general formula (1): R1-O-(R2-O-R2)n,-OR3, wherein R1 is a hydrogen atom or a straight or branched C1-C5 alkyl chain, R2 is a straight or branched C1-C5 alkyl chain, R3 is a hydrogen atom or a straight or branched C1-C5 alkyl chain, and n is an integer of 1 to 200,000.
Patent KR-19990036122-A (KR)
IPC: H01M4/80
Filed: 1996-07-11
Abstract: A porous product, typically a metal foam sheet, is produced as a tailored, engineered product. The porous product can have enhanced strength, as well as more desirable electrical and mechanical properties. The product which first exists typically as a flexible, generally polymeric foam sheet in strip form, which strip is produced in the longitudinal direction, is stretched in a direction other than its direction of production. The porous product can have pores which would be anisotropic in form in usual production, which are stretched to at least substantially isotropic form. The product can even be tailored to have pores which are anisotropic in the direction of the stretch. Thus, an engineered product can be produced which, for example, as an open-cell metal foam prepared from a polymeric foam can have conductivity, both thermal and electrical, as well as strength and ductility, tailored for greater uniformity and performance.
Patent KR-19990071578-A (KR)
IPC: C08L53/00
Filed: 1996-11-22
Abstract: A polypropylene composition for the production of various molded articles which are excellent in moldability, mold shrinkage factor on molding, rigidity, flexibility, impact resistance, in particular low-temperature impact resistance, transparency, gloss, stress-whitening resistance, and the balance thereof; various molded articles having the above properties; a propylene composition which is suitable for a base resin for the polypropylene composition; and a process for the production thereof. The propylene composition comprises a propylene homopolymer and a propylene-ethylene copolymer, the intrinsic viscosity of the copolymer (Ä eta ÜRC) is in the range of 1.7 to 2.8 dl/g, the intrinsic viscosity ratio of the homopolymer to the copolymer (Ä eta ÜRC/Ä eta ÜPP) is in the range of 0.7 to 1.2 and a product Ä(WPP/WRC) x (Ä eta ÜRC/Ä eta ÜPP)Ü of the weight ratio (WPP/WRC) of the homopolymer to the copolymer and the intrinsic viscosity ratio thereof is in the range of 1.0 to 3.0.
Patent KR-20000064482-A (KR)
Title: 안정화된히드록실아민용액
Filed: 1996-12-20
Abstract: 본 발명은 화학식 I의 1종 이상의 화합물 또는 그의 염을 안정화제로서 함유하는 안정화된 히드록실아민 용액에 관한 것이다. 
     R 1 R 2 N-A-NR 3 R 4   
     상기 식에서, A는 알킬렌, 알케닐렌, 알키닐렌, 시클로알킬렌, 시클로알케닐렌, 아릴렌, o-, m- 또는 p-크실릴렌, 5- 또는 6-원의 포화되거나 불포화되고 질소 원자를 가지는 헤테로고리 (상기 라디칼들은 알킬, 알콕시 및 히드록실로부터 각각 독립적으로 선택된 1, 2 또는 3개의 치환기를 함유할 수 있음), 또는 
     
       
     
     (여기서, B 및 X는 -CH 2 CH 2 - 또는 -CH 2 CH 2 CH 2 -이고, 
     n은 10 내지 50,000이고, 
     R은 OH, NH 2 , NHCOR 5 (R 5 는 수소, C 1 -C 18 -알킬 또는 CHR 6 COR 6 (여기서, R 6 은 C 12 -C 18 -알킬임)이다) 또는 COOH에 의해 치환된, 수소, 알킬, 에틸렌 또는 프로필렌이거나, CSSH, CH 2 CN 또는 CH 2 PO 3 H 2 이거나, 다른 폴리에틸렌이민 또는 폴리프로필렌이민쇄의 질소 원자로의 브릿지이고, 이 브릿지는   
     또는 CH 2 CHOH CH 2 CHOH CH 2 - 
     (여기서, o 및 p는 각각 독립적으로 1 내지 15임)에 의해 형성된다)이고, 
     R 1 , R 2 , R 3 및 R 4 은 각각 독립적으로 H, CH 2 COOH, CH 2 PO 3 H 2 , 알킬, 아실, CH 2 CH 2 OH, CH 2 CH 2 NH 2 이거나 
     
       
     
     (여기서, R 7 은 OH, SH, NH 2 , CN, COOH, 알킬 또는 알콕시임)이다. 
     에틸렌디아민테트라아세트산 및 N-히드록시에틸렌디아민트리아세트산 및 그의 염은 본 발명에서 제외된다.
Patent KR-19990077075-A (KR)
Title: 액정 패널의 구동 장치, 액정 장치 및 전자 기기
IPC: G09G3/36
Filed: 1997-11-10
Abstract: 한쌍의 기판과, 해당 기판 사이에 끼워져 지지된 액정과, 기판에 소정의 제1방향으로 배열되어 있고 화상 신호가 공급되는 복수의 신호선(31)과, 제2방향으로 배열되어 있고 주사 신호가 순차 공급되는 복수의 주사선(32)과, 기판의 액정에 대면하는 측에 매트릭스 상으로 설치되어 있고 복수의 신호선 및 복수의 주사선으로부터 각각 공급되는 화상 신호 및 주사 신호에 의해 각각 구동되는 복수의 화소부를 구비한 액정 패널을 구동하는 액정 패널의 구동 장치는, 복수 단계의 제1방향 시프트 레지스터(1a)를 가지며, 해당 제1방향 시프트 레지스터로부터 순차 발생되는 전송 신호에 따라서 화상 신호를 복수의 신호선에 대하여 제1방향의 순서로 순차 공급하는 화상 신호 공급 장치(101 내지 104)와, 복수 단계의 제2방향 시프트 레지스터(2)를 가지며, 해당 제2방향 시프트 레지스터로부터 순차 발생되는 전송 신호에 따라서 주사 신호를 복수의 주사선에 대하여 제2방향의 순서로 순차 공급하는 주사 신호 공급 장치를 구비한다. 그리고, 제1 및 제2방향 시프트 레지스터 중 적어도 한쪽에는, 복수 단계 중 미리 정해진 적어도 2개의 전송 개시 가능 단계로부터 전송 신호의 발생을 선택적으로 개시시키는 전송 개시 제어 장치(11)가 설치되어 있다.
Patent KR-20000005066-A (KR)
Title: Band converted cellular communication systems and methods
Inventor: PRZELOMIEC THOMAS A
IPC: H04W16/14
Filed: 1997-03-12
Abstract: PURPOSE: A band converted cellular communication system provides techniques for adapting the portion of the frequency spectrum allocated to Land Mobile Radio (LMR) for use as down-banded cellular channels. CONSTITUTION: The down-banded cellular channels can be employed, for example, either to supplement a cellular operator's system capacity or as a stand alone cellular-style system which can provide complementary geographic coverage which may, for example, bridge existing cellular systems. According to a first aspect of the present invention, the conventional channelization of the LMR spectrum is redefined in a manner which provides significant advantages. More specifically, for every six originally specified, 25 KHz LMR channels, five new 30 KHz DBC channels are specified. In this way, complete compatibility with cellular systems, e.g., allowing roaming between cellular and DBC systems, is achieved according to the present invention.
Patent KR-20000011114-A (KR)
Title: Process for preparing polyalkene amines
Inventor: MELDER JOHANN PETER
IPC: C10L10/00
Filed: 1997-05-20
Abstract: PURPOSE: A preparation method is provided which produces polyalkene amines from epoxide to give additives for lubricant and fuel. CONSTITUTION: The process for preparing polyalkene amines of formula (I) in which R1, R2, R3, R4, R5 and R6 can have different meanings. According to the process, a polyalkene epoxide is reacted with an amine, and the amino alcohol is dehydrated to give olefin, and reduced to form the compound of formula (I) by hydrogen additive reaction.
Patent KR-20000016697-A (KR)
Title: Device for enhancing transdermal agent delivery or sampling
Inventor: CORMIER MICHEL J N
IPC: A61N1/30
Filed: 1997-06-18
Abstract: PURPOSE: A percutaneous agent delivery or sampling device for piercing the skin for increasing transdermal flux of an agent is provided. CONSTITUTION: The percutaneous agent delivery or sampling device (10) comprising a sheet (6) having at least one opening (8) there through and a plurality of micro blades (4) for piercing the skin for increasing transdermal flux of an agent. The micro blades (4) having a relatively sharp angled leading edge (11, 11') which transitions to a relatively gradually angled blade edge (13, 13').
Patent KR-20000050497-A (KR)
Inventor: CHO SEONG HO
IPC: H01J3/02
Filed: 1999-01-11
Abstract: PURPOSE: An electron gun is to reduce a production cost by enlarging a major lens mirror and reducing a spot mirror when improvement of focusing on a screen is required due to use of high frequency. CONSTITUTION: An electron gun comprises: many cathodes emitting electron beam; a tripolar part consisting of an acceleration electrode and a control electrode for adjusting emission amount of the electron beam; a free focus lens part consisting at least two electrodes for focusing a predetermined amount of the electron beams; and two or more electrodes forming a major lens for focusing the electron beams on a screen. An anode electrode(14) comprises a cup electrode having a rim part(21) which is a hole for passing the electron beam and an electrostatic field control electrode for forming a same lens action on three electron beams. A shield cup(16) arranged to apply anode voltage to the anode electrode for electrical connection therebetween is adjacent to the anode electrode. A projecting part(27) is integrally formed towards a cathode side of the shield cup to act as an electrostatic field control electrode body of the anode electrode.
Patent KR-20000050662-A (KR)
Inventor: KIM MYUNG DUK
IPC: D06F37/24
Filed: 1999-01-13
Abstract: PURPOSE: A preventing apparatus of friction noise of a washer is provided to remarkably reduce friction noise by reduction a friction area between a suspension bar and an upper pivot. CONSTITUTION: A washer having a damper includes a suspension bar between an out-case and an out-tub, and also an upper pivot coupled to an upper end of the suspension bar so as to be globally contacted to an upper corner formed on each corner section of an inner upper part of the out-case. First, friction noise is reduced by forming a plurality of projections (51a) on a contacting area with the suspension bar (50) of the upper pivot (51) and by reducing the contacting area between the upper pivot (51) and the suspension bar (50). Second, friction noise is reduced by forming a plurality of projections (50a) on the contacting area with the upper corner (51) of the suspension bar (50) and reducing the contacting area between the suspension bar (50) and the upper corner (51).
Patent KR-20000051965-A (KR)
Inventor: NO HYANG WOO
IPC: B41M5/00
Filed: 1999-01-28
Abstract: PURPOSE: A heat transfer paper for color ink jet printer is provided which provides a good printing image and is able to improve the elasticity and washing stability of transfer image after transferring and economical efficiency by minimizing the manufacturing process. CONSTITUTION: A heat transfer paper for color ink jet printer comprises: (i) a base paper; (ii) a release layer; (iii) a lower transfer layer; and (iv) an upper transfer layer, wherein the upper transfer layer contains nylon resin or urethane resin as heat-adhesive resin and 20-100 wt. parts of a mixture of acrylic emulsion resin and acrylic resin regarding 100 wt. parts of the heat-adhesive resin, 0.5-5 wt. parts of melamine hardening agent regarding 100 wt. parts of the heat-adhesive resin and 0.5-10 wt. parts of dispersion stabilizing agent regarding 100 wt. parts of the heat-adhesive resin and has the thickness of 5-50 micrometers.
Patent KR-20000059971-A (KR)
Inventor: PARK MYEONG JU
IPC: H01J9/26
Filed: 1999-03-10
Abstract: PURPOSE: A method for coupling front and rear panels of a plasma display panel is provided to improve a quality of the plasma display panel by increasing performing activation to a dielectric passivation layer before attaching front and real panels. CONSTITUTION: In a method for coupling front and rear panels of a plasma display panel, a front panel and a rear panel are supplied into first and second chambers(ch1,ch2) through different loaders, respectively. A dielectric passivation layer of the front panel is activated under the condition of the first chamber(ch1) that a temperature of 350°C and a pressure of 10-6 torr. A previous vacuum of the rear panel is carried out in the second chamber(ch2). In a third chamber(ch3) is supplied the front and rear panels, and a fourth chamber(ch4) is heated so as to be increased up to 450°C. The front and rear panels are attached by melting and hardening a melting sealing member at a state where a temperature is maintained at 450°C during 30 minutes in a fifth chamber(ch5). A ventilation is carried out up to 10-6 torr in a sixth chamber(ch6), and the sixth chamber(ch6) is cooled.
Patent KR-20000066138-A (KR)
Inventor: CHOI GYEONG SIK
IPC: H01J9/24
Filed: 1999-04-13
Abstract: PURPOSE: A neck welding apparatus for a CRT is provided to enhance acid-proof property and cleanness of a welded part of a funnel and a neck by injecting liquid natural gas and methylborate and heating to restrict the expansion of glass according to the heating. CONSTITUTION: A neck welding apparatus of the invention has a funnel settling section, a neck transport section for transporting a neck to be welded to a free end of the funnel, a burner for heating the contacting part of the neck and the funnel, and a fuel gas supply for supplying fuel gas to the burner. A fuel gas branch pipe(29) is provided to lead a portion of the fuel gas supplied to the burner. A cleaning agent mixing section(21) is provided to be supplied with the fuel gas led through the fuel gas branch pipe, and then mixes the fuel gas with the cleaning agent to supply to the burner.
Patent KR-20000066443-A (KR)
Inventor: LEE JEONG HO
IPC: B23P17/02
Filed: 1999-04-16
Abstract: PURPOSE: An apparatus for processing an inner spherical surface is provided to improve the surface roughness of a workpiece by preventing a bite from shaking and to automatically supply oil by an automatic oil supplier for the smooth reciprocating motion of a cutter. CONSTITUTION: An inducer(30) supplies lubricating oil to a face touching with a piston(8) and a holder(42) of a spherical surface processing apparatus through a supplying channel(21) of a connecting shaft(16) and an oil outlet channel(10) formed on the outer circumference of the piston. The supplied oil makes the rectilinear movement of the piston smooth. A check valve(12) prevents oil from backflowing and a key fixes the connecting shaft and the piston.
Patent KR-19990088095-A (KR)
Title: ＭｎＭｇＣｕＺｎ페라이트재료
IPC: C01G49/00
Filed: 1999-05-07
Abstract: 주성분으로서 산화철을 46.5 ~ 50.4몰%, 산화마그네슘을 10.5 ~ 22.0몰%, 산화아연을 22.5 ~ 25.0몰%, 산화구리를 6.0 ~ 16.0몰%, 산화망간을 0.1 ~3.5몰%의 범위로 함유하는 MnMgCuZn 페라이트 재료로, 이것에 의해 비교적 저항율이 높고 원료 비용이 저렴한 MnMgCuZn 페라이트 재료의 이점을 살리고, 기존의 동계열의 재료보다 월등하게 자기손실이 작고 충분한 포화자속밀도를 갖는 우수한 특성의 MnMgCuZn 페라이트 재료를 가능하게 한다.