baber/WOPTO huggingface dataset:
Patent KR-810001992-B1 (KR)
Title: Swtched mode vertical amplifier with elimination of feedback ringing
Inventor: HAFERL P
IPC: G09G1/04
Filed: 1977-03-12
Granted: 1981-12-08
Abstract: The capacitor(30) is coupled to a vertical deflection winding(22) for forming a resonant cct. during retrace.  A switched mode vertical deflection amplifier(20) generates trace current in the deflection winding.  A feedback resistor(31) samples the current in the deflection winding and provides a feedback voltage to the amplifier.  In order to substantially diminish a ringing component of the trace current at the beginning of trace, a cancellation cct.(33,34) provides the amplifier with a voltage which cancels the feedback voltage during at least the latter portion of retrace.
Patent KR-820000749-B1 (KR)
Title: A throat piece for a tennis racket
Inventor: HEINS R
IPC: A63B49/14
Filed: 1978-02-16
Granted: 1982-05-04
Abstract: A throat piece having a series of indentations across its width, said indentations defining substantially parallel ridges and depressions on each of the two major faces of the throat piece said indentations having ends facing toward said top edge and following generally curved paths extending down-wardly and aligned to receive longitudinal strings of the racquet and divert them from the longitudinal direction into the racquet frame, and wherein said ridges on one of said major faces constitute said depressions on the other major face and vice versa.
Patent KR-820000524-B1 (KR)
Title: Method of producing silicon-iron sheet material
Inventor: FLEDLER H
IPC: C22C38/02
Filed: 1978-09-29
Granted: 1982-04-12
Abstract: Electromagnetic Si steel with cube-on-edge orientation is manufd. by casting a melt of Si steel contg. Si 2.2-4.5, B 0.0003-0.0035, Mn 0.02-0.05, S 0.005-0.025, Sn or Sb 0.01-0.1%, hot rolling the steel to thickness 0.15 in., cold rolling with an intermediate annealing between cold rolling passes, forming coils from the steel, decarbonizing, and texture annealing.
Patent KR-810002094-B1 (KR)
Title: Continuous casting apparatus
Inventor: FUCHS F
IPC: B22D11/00
Filed: 1978-10-30
Granted: 1981-12-28
Abstract: Continuous casting appts. includes a 1st rotary member(11) with a 1st surface(14) on which a casting groove(13) is formed, a 2nd rotary member(12) with a 2nd surface(16) in which a cooling region is defined, a molten metal pouring means positioned in a transferring station, and a transferring mechanism(22) for the 1st & 2nd rotary member. It is characterized that the appts. comprises a means(102) for supplying continuously coolant into at least one of the rotary members, a means (124) for discharging the coolant, & a means(64) for taking out the castings from the casting groove.
Patent KR-820001361-B1 (KR)
Title: Method for controlling both withdrawal rote and surface level of molten metal in mold in continuous casting
Inventor: KATO MASANORI
IPC: B22D11/16
Filed: 1978-11-20
Granted: 1982-07-30
Abstract: The speed revolution of the pinch roller(13) is controlled by the signal of the generating power which come from the sensor.  The sensor perceives the surface level (2) of molten steel ni the mold(11).  The surface level of molten steel is suppressed by the radiation rate of the billet (12).  This method has two step; one step detects the deviation signal between the real rate of radiation and the required rate of the radiation, the other step adjusts the flowing amount of molten steel which stream into mold.
Patent KR-830001059-B1 (KR)
Title: 횡이송 및 나사절삭 병용 선반
Filed: 1979-02-10
Granted: 1983-06-01
Abstract: 내용 없음.
Patent KR-820002017-B1 (KR)
Title: Transverse automatic power transmission with improved bearing construction for qutput gear elements
Inventor: YAMAMORI TAKAHIRO
IPC: F16H47/06
Filed: 1979-05-28
Granted: 1982-10-24
Abstract: The transverse automatic transmission has the torque converter(1) in line with the engine while the differential is set parallel to the drive unit.  The differential is coupled to the drive unit by a simple gear train (3,5,7) whose bearings are provided in opposite walls of the engine & gear box housings.  The bearings(4,6) for the drive train are located in blind holes in the housing walls are easily reached for adjustment or replacement.  The overall length of the transmission is greatly reduced from conventional layouts.
Patent KR-800001558-B1 (KR)
Title: Knop control method of synthetic fiber yarns
Inventor: LEE SUNG YUL
IPC: D02G3/34
Filed: 1980-03-07
Granted: 1980-12-27
Abstract: A method for producing a falst twisted knop yarn of thermoplastic synthetic fiber having diversity by controling unit length and one repeat length of knop is discribed. The false twisted knop yarn includes multifilament. The interval of covering yarn guide and ground yarn is controled by freely moving of covering yarn guide, so as to form of knop is variated.
Patent KR-840000195-B1 (KR)
Title: Process for preparing fluorans
Inventor: SCHMIDT PAUL JOSEPH
IPC: B41M5/327
Filed: 1980-06-21
Granted: 1984-02-28
Abstract: Fluoran derivs. I [R=C1˜C4 alkyl; R0=H, C1˜C4 alkyl; R4=-N(R5)(R6); R5=H; R6=ph; Y=OR2; R2=H, C1˜C18 alkyl, benzyl, halo, nitro, C1˜C4 alkyl, benzyl optionally C1˜C4 alkoxy-substituted R3=C1˜C4 alkoxy  are prepd. and are used as color formers in thermal and pressure-sensitive systems.  Thus, a mixt. of trimellitic angydride and m-(diethylamino) phenol was heated in ethylene dichloride-aq. NH3 to give 4-and 5-carboxy-2-[4-(diethylam- ! ino)-2-hydroxy benzoyl  benzoic acid and the product was treated with 2-methyl-N-phenyl-p-phenetidine in oleum to give the corresponding phthalide derivs., and the phthalide rings were closed and the products were treated with Me2So4 to give Ia[R=CH2CH3; R1=CH3; Y=OC2H5 , giving a black shade on acid clay.
Patent KR-830002195-B1 (KR)
Title: 광파이버용 원료의 제조방법
IPC: C03B19/06
Filed: 1980-07-12
Granted: 1983-10-19
Abstract: 내용 없음.
Patent KR-850001644-B1 (KR)
Title: Direct reduction of iron using coke oven gas
Inventor: SANZENBACHER CHARLES W
IPC: C21B13/00
Filed: 1982-01-21
Granted: 1985-11-06
Abstract: An apparatus for the direct reduction of iron oxide utilizing sulfur- containing gas, such as coke oven gas, for the process gas. Sulfur- containing gas is heated by indirect heat exchange and injected into the furnace above the reduction zone to transfer the sulfur to the hot burden.  The apparatus includes: an upper bustle zone for prereduction and sulfur transfre; a lower bustle zone for the final reduction of the burden to metallized iron; and a means to recycle spent top gas through a cooling zone as a cooling gas.
Patent KR-890000619-B1 (KR)
Title: Process for the preparation of 1-aryloxy-3-alkynylamino-propan-2-ols
Inventor: KOEPPE HERBERT
IPC: A61K/
Filed: 1982-08-25
Granted: 1989-03-22
Abstract: The new cpd. of formula (I) and its acid addn salts are prepared by reacting the cpd. (II) with the cpd. (III).  In these formulas, R1 is cycloalkyl of 3-10C, phenyl or aryoxyalkyl; R2 is H, halogen, alkyl or alkoxy of 1-4C, the ring formed gps. -(CH=CH)2- or -(CH2)n- (n=3,4,5) whose free valences are bound ortho-position; R3 is H or alkyl or 1-3C; R4 is alkyl of 1-3C; when R3 and R4 form the ring, that is -(CH2)p- (p=4,5,6); Z is ethylene oxide gp. or -(CHOH-CH2-Hal < Hal is halogen).  (I) is useful for the antiactivation agent of  β-adrenaline.
Patent KR-890005004-B1 (KR)
Title: Dot pattern interpolation system
Inventor: YOSHII JIRO
IPC: G06T3/00
Filed: 1984-10-17
Granted: 1989-12-04
Abstract: The dot interpolation system is useful for enlarging a font for a wordprocessor maintaining high quality.  The system comprises a dot pattern memory (33) storing the character pattern data, an interpolation means (40) obtaining the interpolation dot data from the dot pattern memory, and memories (42A,42B) storing the data being compared by interpolation comparators (41A,41B).
Patent KR-860002201-B1 (KR)
Title: Bottle arrange apparatus
Inventor: CHONG KI-O
IPC: B65G47/22
Filed: 1985-03-06
Granted: 1986-12-31
Abstract: A conveyor belt(5) is established between the rollers(3,4) to convey the bottle. The pulley(7) of the roller(4) is connected with a motor(9) by a belt(10). An inclined shoot(16) is established under the roller(4). Racks(7,7'), which contact with the bottle-neck, are made on the lower portion of the shoot. A stop air cylinder(18) and an arranging air cylinder(19) are established upper the rack(17) and between the racks. The rod of the arranging air cylinder(19') pushs the bottle into a inclined bottle arranging room(20). Another air cylinder(22) is fixed under the exit(21) of the arranging room. A lead screw(23) delivers this bottle to a charge line.
Patent KR-890001973-B1 (KR)
Title: Device for removing ink from waste paper
Inventor: SIOIRI OKIRA
IPC: D21C5/02
Filed: 1985-09-09
Granted: 1989-06-05
Abstract: A process for removing ink from wastepaper comprises (a) introducing an aq. slurry of wastepaper pulp into a treating vessel, (b) blowing air bubbles into the pulp slurry in the vessel to cause the air bubbles to absorb ink particles from the pulp slurry while rising to the surface of the pulp slurry, and (c) removing the resultant ink- absorbed froth from the pulp slurry.
Patent KR-870001381-B1 (KR)
Title: Process for preparing triazole derivatives
Inventor: COPPER KELBIN
IPC: C07D409/06
Filed: 1985-11-27
Granted: 1987-07-24
Abstract: Q=R or R1: Q1=R1 when Q=R) are prepd. by the reaction of ketone (II) with Q1MgBr, Q1MgI or Q1Li. Thus, the mixture of BrMgC6H4F and 4-bromofluoro benzene is reacted with 1-(1H-1,2,4-triazole-1-yl)cyclopropyl-4- fluorophe nylketone to give 1,1-bis-(4-fluoromethyl)-1-(1-[1H-1,2,4-triazole -1-yl! cyclopropyl)-methanol.
Patent KR-890004323-B1 (KR)
Title: Remote control system
Inventor: GONDO YOUZI
IPC: H04M11/00
Filed: 1986-03-31
Granted: 1989-10-30
Abstract: The system is to supervise various safety devices at home from a visiting place by telephone.  The electronic control circuit (2) consists of an input interface (200), a central processor (300), and an output interface (400).  The central processor (300) has a security function (301) which judges whether output signals of a fire sensor (S1), a crime prevention sensor (S2), and a gas leakage sensor (S3) are normal through the interface (200) by the input from the output interface (400), an apparatus operation monitoring function (302) which turns on and off the various apparatus by the input from the output interface (400).
Patent KR-920010876-B1 (KR)
Inventor: MORI NAODAKE
IPC: H02P5/747
Filed: 1986-06-19
Granted: 1992-12-19
Abstract: 내용 없음.
Patent KR-900003788-B1 (KR)
Title: Process for the preparation of 5,6-dialkoxy an thranilic acid
Inventor: CONLEY RICHARD A
IPC: C07C233/16
Filed: 1986-07-29
Granted: 1990-05-31
Abstract: A process for prepg. 5,6-dialkoxy anthranilic acid of formula (I) comprises (a) reacting a cpd. of formula (II) with pivalic acid cpds. of formual X'-C(=O)-R5, (b) reacting with org. lithium cpds. of formula R4-Li to provide dilithium salt, (c) reacting with CO2 to give anilide, (d) reacting with esterification agent to prep. ester, (e) reacting with acid anhydride of formula (RCO)2O, and (f) base- hydrolysing. In the formulas, R, R1 and R2 are each lower alkyl; R4= n-Bu or sec.-Bu; R5= tert. -Bu; X= H or halogen; X'= OCOC(CH3)3 or halogen. (I) are useful as an intemediate for prodn. substd. quinazolindion, which is useful as a cardiotonic.
Patent KR-930004516-B1 (KR)
Inventor: GUTEK BETH I
IPC: E04H15/54
Filed: 1986-09-17
Granted: 1993-05-27
Abstract: 내용 없음.
Patent KR-890002738-B1 (KR)
Title: Primary suspension for railway vehicle truck
Inventor: MULCAHY HARRY W
IPC: B61F5/30
Filed: 1986-10-28
Granted: 1989-07-26
Abstract: A railway vehicle bogie of the our wheel type is provided with elastomeric devices (34) operative in shear.  The devices are disposed between the side frames (12) and wheelsets (14) in such a manner as to reduce hunting and to permit turning of the wheelsets during correring.  Each elastomeric device consists of an elastomeric pad (36) interposed between opposing surfaces of upper and lower plates (38,40).  Each pad is threadedly fastened to the bearing adapters (32) and to the side frame pedestal roofs (30) in such a manner that separation of mating surfaces (41,60) is precluded.
Patent KR-940005375-B1 (KR)
Inventor: MATSUMOTO SHUJO
IPC: H03H11/12
Filed: 1987-01-09
Granted: 1994-06-17
Abstract: 내용 없음.
Patent KR-890004373-B1 (KR)
Title: Checking a position of connection of cable
Inventor: LEE SANG-SOL
IPC: G01R33/00
Filed: 1987-01-26
Granted: 1989-10-31
Abstract: A position detector for a joint sleeve (10) is provided for detecting whether the sleeve is positioned in a midpoint or not when the cables (8,9) are connected to each other.  The midpoint (11a) of an inner sleeve (11) mounted on the connected cables is detected with the joint sleeve by voltages generated from coils (L2, L3) wound on specimens (5a,5b) and from a coil (L1) wound on a rear support bar (6).
Patent KR-900002922-B1 (KR)
Title: A process for the stabilization of sundrops oil
Inventor: KIM CHENG-KYU
IPC: C11B5/00
Filed: 1987-02-07
Granted: 1990-05-03
Abstract: In the process for the stabilization of sundrops oil, the oil is mixed with 0.5-20 parts of some additives.  Saturated hydrocarbons, such as paraffin, isoparaffin and squalane, are used as the additives and triglycerides of saturated fatty acid, such as tricaprylglycerin and tricaprylic acid glycerin.  For example, the purified sundrops oil is mixed with 0.5, 3, or 20 parts of paraffin and then incubated at 4, 27, and 37≰C with testing the peroxide value at intervals of 5 days.
Patent KR-950002845-B1 (KR)
Inventor: SUZUKI KOICHI
IPC: A01N25/10
Filed: 1987-04-08
Granted: 1995-03-27
Abstract: 내용 없음.
Patent KR-900005398-B1 (KR)
Title: Composition of acrylic adhesive
Inventor: CHONG CHIN-CHOL
IPC: C09J133/06
Filed: 1987-05-08
Granted: 1990-07-28
Abstract: Acrylic adhesive compsn. of two-components liquid comprises: one or more component mixt. comprising isotactic polypropylene chloride, poly(ethylene-propylene) chloride copolymer, poly (ethylene- propylene-diene monomer) chloride tricomponent copolymer, chloro sulphonic isotactic polypropylene, chloro sulphonic poly (ethylene- propylene) copolymer or chloro sulphonic poly (ethylene-propylene- diene) tricomponent copolymer; acrylic or methacrylic monomer; polymerization initiator; and stabilising agent.
Patent KR-970007427-B1 (KR)
Inventor: OKUBO YASUNORI
IPC: C30B15/22
Filed: 1987-09-19
Granted: 1997-05-08
Abstract: 내용없음.
Patent KR-910001088-B1 (KR)
Title: Cooling system
Inventor: PARK HONG-CHOL
IPC: F21V29/00
Filed: 1987-12-31
Granted: 1991-02-23
Abstract: In a  cooling  system  of  LCD  projector  a  compressor  (6) compresses the  refrigerant  from  a  liquid  reservoir  (1),  and supplies it into the case (36) of the illumination system  of  LCD projector in order  to  cool  the  interior  of  the  illumination system. The refrigerant recovered radiates heat  while  it  passes through a heat exchanger (20) and  is  collected  again  into  the liquid reservoir (1). The illumination system  case  (36)  with  a lamp-change cover  includes  a  upper  buoyancy  switch  (17)  for detecting the amount of the refrigerant and being  installed  near the lamp (16), a temperature sensor (50) to detect the temperature of the liquid in the illumination case, a open switch (23) at  the end of the illumination system case (36),  and  a  lower  buoyancy switch (8) in a buffer (9).
Patent KR-930005126-B1 (KR)
Title: Paper size checking control method for fax
Inventor: LEE JONG-DAE
IPC: H04N1/31
Filed: 1988-02-15
Granted: 1993-06-15
Abstract: The facsimile  detects  the  size  of  a  manuscript  when  a manuscript is set and current mode is set by a sending  mode.  The method comprises the modes: (A) turning off photo  reflector  (PR) and LED (PD4) of a sensor unit (10) and returning to standby  mode when a manuscript is not set or current  mode  is  not  a  sending mode; (B) turning on a photo  reflector  (PR)  and  a  LED  (PD4); checking that a photo sensor (PS4) is turned on; (C) turning off a photo reflector (PR) and storing that a size of a manuscript is A3 photosensor is not turned on; (D) turning off  an  LED  (PD4)  and executing sending program; (E) turning off an  LED  (PD4)  when  a photosensor  (PS5)  is  turned  on;  (F)  detecting  the  size  of manuscript by checking the  turn  on  or  off  state  of  a  photo reflector; and (G) turning off the photo reflector  and  executing sending program.
Patent KR-900005387-B1 (KR)
Title: Glass marking method using laser
Inventor: CHANG WUK-IL
IPC: C03C17/06
Filed: 1988-07-14
Granted: 1990-07-28
Abstract: AG laser is accomplished by the stages of setting up aluminium or iron plate coated material absorbing laser beam, putting up a thickness guage or thin papers to make a fixed interval as a glass support on the plate, putting up a transparent glass on the support, lasering on the glass as a desired patern. As a result the material absorbing laser-beam melts, evaporates and solidificates on the lower surface of glass.
Patent KR-0125568-B1 (KR)
Inventor: ALLEN ROBERT-H
IPC: B01J8/24
Filed: 1988-08-20
Granted: 1998-04-11
Abstract: 내용 없음.
Patent KR-900007667-B1 (KR)
Title: Method for growing bismuth-single crystal
Inventor: LEE SEONG-IK
IPC: C30B7/08
Filed: 1988-08-30
Granted: 1990-10-18
Abstract: The single crystal of bismuth based cpd. is prepared by the stages of mixing 10-50 mol.% Bi, 10-40 mol.% Sr, 10-40 mol.% Ca and 20-60 mol.% Cu, heattreating at not less than 900 deg.C  for 10 minutes or more and cooling at the rate of not more than 50 deg.C/hr. The produced single crystal has a lov critical current density.
Patent KR-950004082-B1 (KR)
Inventor: FUJITA TAKAYOSHI
IPC: D02G3/34
Filed: 1988-09-06
Granted: 1995-04-25
Abstract: 내용 없음
Patent KR-920008094-B1 (KR)
Inventor: MILUNAS RIMAS S
IPC: F16H47/08
Filed: 1988-09-28
Granted: 1992-09-22
Abstract: 내용 없음.
Patent KR-930006846-B1 (KR)
Title: Fluroescent screen for color braun tube
Inventor: HAN SOK-SUN
IPC: H01J29/32
Filed: 1988-11-29
Granted: 1993-07-24
Abstract: The fluorescent screen, on which pixels  of  red,  green  and blue fluorescent substances are regularly arrayed in  dots  and  a light- absorbing material layer is formed between  the  pixels,  is characterized by black matrix holes (21,22,23) of different  sizes formed on the panel inside and pixels of different sizes for  red, green and blue fluorescent substances (24,25,26), where the radius ratios  of  rR/rG  and  rB/rG  are  0.869-1.067  and  0.794-0.826, respectively. The fluorescent screen can obtain the white  balance and lengthen the life of the cathode ray tube.
Patent KR-950010589-B1 (KR)
Title: Microporous coatings
Inventor: TOWERY DONALD D
IPC: D06N3/14
Filed: 1987-09-03
Granted: 1995-09-20
Abstract: Water-vapor-permeable yet waterproof coated fabrics are prepared by applying a polyurethane resin solvent solution to a base fabric then immersing the coating to coagulate the resin leaving a thin, microporous coating on the fabric. An acrylic acid thickener system is included in the resin solution to provide a microporous coating having moisture vapor transmission rates of at least 600 g/m<2>/24 hours and hydrostatic pressure resistance of at least 69 kPa. The resin solution may contain a bioactive silyl quaternary ammonium compound to impart laundry-durable antimicrobial properties to the coating and/or a hindered amine ultraviolet stabilizer to protect the coating from degradation caused by ultraviolet light and/or a flame retardant to render the coated fabric resistant to flame.
Patent KR-920004667-B1 (KR)
Inventor: WATANABE RYUJI
IPC: F02F3/10
Filed: 1989-02-18
Granted: 1992-06-13
Abstract: 내용 없음.
Patent KR-940009026-B1 (KR)
Inventor: TOYAMA YOSHIKUNI
IPC: G03G15/00
Filed: 1989-02-20
Granted: 1994-09-29
Abstract: 내용 없음.
Patent KR-910007991-B1 (KR)
Title: Electrc circuit for injection molding control
Inventor: CHOI KWI-SUK
IPC: B29C45/76
Filed: 1989-04-19
Granted: 1991-10-05
Abstract: A control circuit is designed to change the  average  voltage by modulating pulse width employing analog switching method and to regulate the slope of linear curve changing by the model  of  mold injection. Everytime set value is applied to op  amplifier  (OP1). And control command  to  the  setting  value  is  given  to  adder (OP3-OP4) by analog switching device (AS1-AS9) and is  oscillating triangular wave operating at constant frequency of  150  Hz.  This oscillating signal is compared to external DC reference voltage to regulate pulse width by switching transistors (TRs1-TRs9)  and  to control linear slope  of  electronic  proportional  varistor  (20) while compensating changing rate of average voltage. This  feature is enhancing delayed  switching  time,  reduced  life  time,  slow response and high cost in usual method of using magnetic relays.
Patent KR-920000803-B1 (KR)
Title: Electronic cash resister
Inventor: RYU CHUN-KEUN
IPC: G07G1/00
Filed: 1989-05-31
Granted: 1992-01-23
Abstract: The method sets the code numbers to input/output key data  in a cash register and properly manages the contents of the key  data thereof. The method includes the steps of:  checking  whether  the key is a cash receiving or a cash payment; checking whether a code number is assigned when the key is a cash  receiving  or  payment; checking whether the key is a cash receiving when there is a  code number assigned; checking on the inputted code number,  setting  a flag for the relevant memory region for the  code  number  of  the cash receiving, and returning to the  original  state,   when  the inputted key is a cash receiving key; and carrying  out  the  last step to set a flag for the cash payment when the inputted key is a cash payment key.
Patent KR-910009593-B1 (KR)
Title: Process for making snack containing of sea foods
Inventor: LEE TAE-HUN
IPC: A23L17/60
Filed: 1989-06-19
Granted: 1991-11-23
Abstract: A process for preparing seaweed-contg. snack  comprises:  (a) mixing angle powder, brown  seaweed  powder,  green  laver  power, bundle laver powder, laver  powder,  unhulled  rice  powder,  corn powder, shortening, stebioside, beef ext. and  onion  powder,  and steaming under 1-3 kg/cm2 for 5-15 min; (b)  forming  the  steamed mixt. into the sheet of 0.5-2.5  mm  thickness;  (c)  cooling  the sheet at room temp. for 40 min and cutting;  (d)  drying  the  cut sheet with hot air at 50-80 deg.C to obtain the sheet contg. 9-15% water content; (e) frying the dryed sheet  at  170-230  deg.C  for 2-10 sec. in the edible oil to obtain the final product. The obtd. snack has an abundant mineral and dietary fiber.
Patent KR-910006127-B1 (KR)
Title: Glycerin derivative and its pharmacological use
Inventor: OKANO KATHUO
IPC: A61K31/4425
Filed: 1989-07-04
Granted: 1991-08-13
Abstract: A glycerin derivative having the following formula (I) or (I min ) and a pharmacologically acceptable salt thereof are useful to treat diseases caused by the platelet activating factor. <CHEM> r
Patent KR-940008568-B1 (KR)
Inventor: FUJISAWA AKIRA
IPC: H01L29/78
Filed: 1989-08-16
Granted: 1994-09-24
Abstract: 내용 없음.
Patent KR-950007164-B1 (KR)
Inventor: TAKADA YUTAKA
IPC: C05G3/00
Filed: 1989-11-25
Granted: 1995-06-30
Abstract: 내용 없음.
Patent KR-920001227-B1 (KR)
Title: Mixed solution seperating method
Inventor: LEE MYUNG-HWAN
IPC: B01D11/04
Filed: 1989-12-07
Granted: 1992-02-08
Abstract: A purification and  separation  method  of  a  mixed  solvent containing  an  amide  base  solvent  is  characterized   by   the extraction and distillation. Mixture  of  solvents  is  containing NMP, pyridine, inorganic salts, sodium chloride and water. NMP and Pyridine in the mixture of amide base solvent and aquous  solution re extracted with chloroform.  Secondly,  amide  base  solvent  is separated by the disillation of the extract.