baber/WOPTO huggingface dataset:
Patent KR-900007526-B1 (KR)
Title: Luggage carrier with detechable suspended load-bearing rack
Inventor: STAPLETON CRAIG A
IPC: B60R9/04
Filed: 1987-06-18
Granted: 1990-10-11
Abstract: The rack includes a rectangular frame which is secured to the vehicle roof but elevated by corner stanchions. The cross-members of the frame are provided with slots positioned at their outboard ends. The slots are adapted to receive spring clips attached to a load bearing rack that is suspended below the frame in close proximity to the rooftop of the vehicle when connected to the frame. The rack includes a series of parallel load bearing members and upwardly extending support arms. The spring clips are secured to the upper end of the support arms. The suspended rack is fixed in place by the interlocking action of the spring clips within the corresponding frame slots.
Patent KR-900002051-B1 (KR)
Title: N-(2-halo propionyl)-proline
Inventor: PARK HO-KEUN
IPC: C07D207/04
Filed: 1987-07-01
Granted: 1990-03-31
Abstract: The method for preparing N-(2-halopropionyl)-proline derivatives of formula (I), used as an inhibitor against angiotensin and antihypertensive agent, is presented.  Thus, 4.1g of proline benzylester is dissolved in 20ml of chloroform and the above mixture is cooled in water-ice bath.  Then, 1.7g 2-bromopropionyl chloride is dropped slowly in 15ml of chloroform containing proline ester. The above mixture is stirred at 25≰C C for 2 hrs and the obtained chloroform layer is washed with water three times, evaporated and purified.  In (I), R1 is H, C1-10 lower alkyl or aryl; R2 and R3 are each H, C1-4 alkyl, aryl, amino or cyano; X is Cl, Br or I.
Patent KR-970001728-B1 (KR)
Title: Excavating tooth assembly of construction machine
Inventor: EMRICH ROBERT K
IPC: E02F3/40
Filed: 1987-12-04
Granted: 1997-02-14
Abstract: An excavating tooth assembly is described including an adapter (22), a point (21) equipped with rearwardly projecting tongues (28), and locking means including a vertical pin (32) external of the adapter nose (23) held in place by a shrouded spring loaded plug (41) disposed perpendicularly to the line of the mounting point (21) on the adapter (22), the pin (32) having arcuate front (34) and back (35) surfaces for wedging engagement with laterally projecting ears (36,37) on the nose (23) and a laterally projecting lug (38) on a point tongue (28).
Patent KR-900004262-B1 (KR)
Title: Method of producting crt
Inventor: ITOH DAKEO
IPC: C09K3/16
Filed: 1987-12-17
Granted: 1990-06-18
Abstract: Cathode-ray tube is produced by firstly condensing and hydrolysing two or more alkyl silicate monomers in an alcohol soln. and in an average range of dimer to hexamer thereby forming, as a condensate, a soln. (I) contg. polyalkyl siloxane. Soln. (I) is then coated on a cathode-ray tube faceplate. The condensing reaction of soln. (I) is then continued to form a polyalkylsiloxane condensate (II). Finally, (II) is sintered to convert it to SiO2 by dehydration and dealcoholation reactions, thereby forming an SiO2 film on the faceplate.
Patent KR-900003966-B1 (KR)
Title: Cooking control method of electronic range
Inventor: OH KI-TAE
IPC: H05B6/68
Filed: 1987-12-22
Granted: 1990-06-05
Abstract: The method for setting cooking time automatically regardless of external temperature of microwave oven comprises a first process for detecting temperature (U1) of inflowing air through an intake (14A) when first stage heating is executed, a second process for setting increment ( T') low when the detected temperature (U1) is higher than referene temperature (R), a third process for setting increment ( T') high when the detected temperature is lower than the reference temperature, and a fourth process for executing first and second stage heating according to the compensated increment ( T').
Patent KR-930004777-B1 (KR)
Inventor: NIKAIDO MASARU
IPC: H01B3/30
Filed: 1988-01-21
Granted: 1993-06-08
Abstract: 내용 없음.
Patent KR-900008817-B1 (KR)
Inventor: SHIM HYUN-SIK
IPC: H01L29/70
Filed: 1988-02-15
Granted: 1990-11-30
Abstract: 내용 없음.
Patent KR-910006569-B1 (KR)
Inventor: TSZKI MITSO
IPC: G11B20/10
Filed: 1988-02-24
Granted: 1991-08-28
Abstract: 내용 없음.
Patent KR-960001477-B1 (KR)
Inventor: BEYLIN VLADIMIR GENUKH
IPC: C07D513/08
Filed: 1988-03-23
Granted: 1996-01-31
Abstract: 내용 없음.
Patent KR-920005178-B1 (KR)
Inventor: OGINO SUMIHITO
IPC: A61B6/03
Filed: 1988-05-20
Granted: 1992-06-29
Abstract: 내용 없음.
Patent KR-910006122-B1 (KR)
Title: Method for transferring data by using buffering
Inventor: KANG SEONG-BONG
IPC: H04L12/20
Filed: 1988-05-31
Granted: 1991-08-13
Abstract: The method stores the  transmission  data  on  a  memory  and transmittes the stored data with the  transmission  speed  of  the receiver so that data communication between  the  transmitter  and the receiver having different baud rate is  realized.  The  method comprises steps: (A) controlling a switch circuit to form  a  loop to the receiver's terminal when communication service request data is received, and registering communication enable signal on  state buffers of the transmitter and receiver's  terminal;  (B)  storing the data received from the transmitter on receiveing buffer  of  a first port by driving a first port receiving module,  transmitting the data through a second port and storing the transmitted data on a receiving buffer or a second port;  (C)  transmitting  the  data stored on a second port buffer to the first port of the  terminal; (D) checking the data stored on the first buffer and releasing the communication when communication stop message is received.
Patent KR-950005079-B1 (KR)
Inventor: WILSON CHARLES F
IPC: B25J15/00
Filed: 1988-08-16
Granted: 1995-05-18
Abstract: 내용 없음.
Patent KR-970008608-B1 (KR)
Title: Optical disk device
Inventor: WAJJI SIGEAGGI
IPC: G11B21/08
Filed: 1988-08-20
Granted: 1997-05-27
Abstract: An optical disc drive that employs a velocity feedback loop for detecting the moving velocity (SV20) of an optical pickup, thereby to enable the optical pickup to seek a target recording track of an optical disc. The number of tracks (DT) to the target recording track is calculated on the basis of a signal derived from the optical pickup and a target velocity signal is supplied to the velocity feedback loop in accordance with the calculated result, whereby the moving velocity of the optical pickup can be controlled to become [0] at a timing (time point) at which the optical pickup reaches the target recording track.
Patent KR-910005115-B1 (KR)
Title: Ceramic heating coil method
Inventor: OH YO-WHAN
IPC: H05B3/10
Filed: 1988-08-31
Granted: 1991-07-22
Abstract: A method for forming a ceramic  heating  coil  comprises  (a) stripping films on surface of  metal  plate  with  sand  blasting, washing it with alkali or dil. acid  soln.  (b)  printing  ceramic coating reagent on its surfaqce for insulation about thickness  of 20-40μm by screen printing method more than two times, heating  it at 120-180 deg.C for 10min and above, building its total thickenss above  120μm  by  iteration  of  above  processes,  (c)   printing conducting ceramic ink reagent for electric circuit above 30μm  by screen printing method, after contacting it with electrode, it  is heated at 120-180 deg.C for 20-40 min, and  (d)  printing  ceramic insulating reagent on it about  thickness  of  20-40μm  by  screen printing method more than two times, heating it at  120-180  deg.C for 10 min. It has advantages of minimization of heater  vol.  and no contact heater with its atmosphere.
Patent KR-950012332-B1 (KR)
Inventor: SASAKI TOSHIO
IPC: C08F4/64
Filed: 1988-09-08
Granted: 1995-10-17
Abstract: 내용 없음.
Patent KR-950013918-B1 (KR)
Title: Detergent composition
Inventor: RENE MALDONADO
IPC: C11D3/37
Filed: 1988-10-05
Granted: 1995-11-18
Abstract: Anionic, especially sulfoaroyl, NaO3S(C6H4)C(O)- preferred, end-capped esters useful as soil release agents in detergent compositions and fabric-conditioner articles. The terephthalate esters contain unsymmetrically substituted oxy-1,2-alkyleneoxy units (oxy-1,2-propyleneoxy units preferred).
Patent KR-910005590-B1 (KR)
Title: Process for production of healthgiving food
Inventor: CHONG IN MYONG
IPC: A23L33/00
Filed: 1988-10-06
Granted: 1991-07-31
Abstract: A  health  giving  food  is  prepd.  Thus,  6g  ginseng,  6g rehmanniae rhizoma, 6g astragali radix, 6g ginger, 4g  atracthylis rhizoma, 4g ligustici radix, 4g peony, 4g cassia cortex, 4g  amomi semen, 4g orange peel, 3g pachymae fungus, 3g licorice  root,  and two jujubes are mixed with a mixed soln. of refined rice wine  and water (mixing ratio is 1:10), extracted by boiling, impregnated to wheat powder or rice, dryed and pulverized to give the powder (I). 2g schizandrae fructus, 3g matrimony vine and 3g  gastrodia  elata blume are soaked in the rehmanniae  rhizoma  juice,  steamed  with alc., dryed, mixted with 5g  corni  fructus  powder  to  give  the powder (II). The obtd. (I) is mixd. with  the  (II)  to  give  the final product.
Patent KR-920004055-B1 (KR)
Inventor: PENG CHEN-HSIEN
IPC: E04H6/18
Filed: 1988-10-10
Granted: 1992-05-23
Abstract: 내용 없음.
Patent KR-910004860-B1 (KR)
Title: Method for producing powdered iron oxine
Inventor: NAOE HIRAI
IPC: C22B47/00
Filed: 1988-12-17
Granted: 1991-07-15
Abstract: In a method for producing powdered iron oxide by oxidizing roasting an iron chloride solution, the pH-value of the crude iron chloride solution is adjusted to 2,5 to 4,5, the solution is subjected to a mechanical treatment in order to obtain a solution whose pH-value is not less than 1,5 and which contains insoluble Fe<3><+>compounds in an amount of 0,01 to 0,1 % by weight, being calculated as Fe. The insolubles are separated from the solution and the resulting filtrate or purified solution is then roasted and oxidized in order to produce powdered iron oxide having a P content of not more than 0,005 % by weight.
Patent KR-940011215-B1 (KR)
Inventor: IMANAKA KOJIRO
IPC: B23B51/02
Filed: 1988-12-19
Granted: 1994-11-29
Abstract: 내용 없음.
Patent KR-910002725-B1 (KR)
Title: Anti-oxidation agent in high temperature for a hot rolled steel materials
Inventor: LEE SUK-KUN
IPC: C23F11/00
Filed: 1988-12-20
Granted: 1991-05-03
Abstract: An anti-oxidation Agent in high temperature  for  hot  Rolled steel materials are composed of 4.5-60 wt.% of Li3CO3, 2-5 wt.% of Cr2O3, 5-10 wt.% of Fe, and 10-20 wt.%  of  Al2O3.  The  Agent  is coated on the surface of hot rolled steel materials, e.g.  billet, slabe, reduce scale in the heating furnace. The agent has  a  good adhesion property and exfoliation.
Patent KR-910003208-B1 (KR)
Inventor: KUBO YUTAKA
IPC: C04B35/58
Filed: 1988-12-22
Granted: 1991-05-22
Abstract: 내용 없음.
Patent KR-910004116-B1 (KR)
Title: A testing method for the purity of slab
Inventor: PARK HAK-RYOL
IPC: G01N33/20
Filed: 1988-12-29
Granted: 1991-06-22
Abstract: A method for  estimating  a  cleanliness  of  the  cast  slab comprises (a) grinding and cleaning a specimentaken from the  cast slab, (b) electrolyzing the  specimen  for  20-30  minutes  in  an electrolytic soluton consisting of tetramethy   ammonium  chloride under the condition of 3-4 pH, 750-1300mA  electric  current,  and (c) observing the specimen with the stereomicroscope and monitor.
Patent KR-970007209-B1 (KR)
Title: A/f control method for automobile engine
Inventor: LEE HEE-SANG
IPC: F02D35/00
Filed: 1988-12-30
Granted: 1997-05-07
Abstract: The air fuel ratio control method of an automotor has a process for determining oxygen concentration of an air fuel ratio on the basis of an output voltage from an oxygen sensor(5) and controlling the air fuel ratio in order to maintain the air fuel ratio on the theoretical air fuel ratio in accordance with the determined result. In more detail, the method comprises the steps of: if an abnormal signal is outputted from the oxygen sensor(5), detecting the abnormal signal and thus performing a proportional control with an opening degree inclination value(Q1) upon the output of the abnormal signal of the sensor(5); if the abnormal signal is released, re-performing the proportional control with the opening degree inclination value(Q1) upon the output of the abnormal signal of the sensor(5).
Patent KR-970002927-B1 (KR)
Title: Radiolucent hospital bed surface
Inventor: POEHNER MICHAEL E
IPC: A61B6/04
Filed: 1989-01-28
Granted: 1997-03-13
Abstract: There is disclosed a radiolucent patient surface comprising a radiolucent patient supporting member (90) having a predetermined radiolucent area (w) thereacross, and a non-planar radiolucent reinforcing member (91) having portions (99,100) disposed in operative normally spaced-apart underlying relationship with respect to said patient supporting member (90) across said predetermined area (w); said reinforcing member portions (99,100) providing deflection resisting support for said patient supporting member (90). In preferred embodiments multiple elements of a blow-moulded, integral patient support surface each include a synthetic sheet-like patient support element (90) and an underlying synthetic corrugated reinforcing element (91) spaced from the support element (90). When loaded, the patient support element (90) engages the corrugated reinforcing element (91) which resists deflection and rigidifies the surface. The corrugation angulation and the combined wall thickness of the flat support (90) and corrugated reinforcing elements (9l) in a predetermined area (w) are selected to provide an effective combined wall thickness within F.D.A. attenuation standards, yet still provide sufficient rigidity and aberration-free x-rays. An adjustable x-ray plate cassette is disclosed.
Patent KR-910005025-B1 (KR)
Title: Preparation method of ceramic brick
Inventor: SUH TAE-SU
IPC: C04B38/10
Filed: 1989-05-15
Granted: 1991-07-22
Abstract: lightweight ceramic  brick  having  0.08-1.5  mm  micropore, 0.3-0.9 g/cm3 bulk density and 5-30 kg/cm2 compressive strength is produced by foaming a slurry as a  ceramic  raw  material  with  a foaming agent,   mixing   the   foamed   material     with     a viscosity- controlling  agent  and  strength-promoting  agent,  and molding, drying and firing  the  mixt.  The  slurry  has  7-14  of hydrogen- ion concentration coefficient. The ceramic brick is  used as a furnace material and low-temp. plant material.
Patent KR-910006755-B1 (KR)
Title: Thermo protection circuit of digital volume
Inventor: CHANG SUNG-CHUL
IPC: G10L25/00
Filed: 1989-05-19
Granted: 1991-09-02
Abstract: The circuit for protecting the  audio  deterioration  of  the digital  volume  by  controlling  the  gain  of  the  volume  data according to the control data derived from the digital volume data and the level attenuation  includes  a  digital  signal  processor (10), a digital level controller (20), a 1st signal detector  (30) for detecting the control data, a 1st D/A converter for  receiving and D/ A-converting the audio  data  with  the-clock,  a  1st  gain controller (70) for controlling the gain of the output of the  1st D/ A converter (40), a  1st  low  pass  filter  (90)  for  low-pass filtering the output of the 1st gain controller (70), a 2nd signal detector (50), a 2nd D/A converter (60),  a  2nd  gain  controller (80), and a 2nd low pass filter (100).
Patent KR-910010102-B1 (KR)
Title: The fluorescent material and the cathode ray tube using the same
Inventor: KIM MIN-HO
IPC: H01J29/20
Filed: 1989-07-06
Granted: 1991-12-16
Abstract: A fluorescent composed of (Al1-x-yLnxTby)nBO3 [Ln = Sc,  Lu, La and/ or Y; 0 < x <= 0.4; 0 < y <= 0.1; 0.5 <= n <= 2.0  is  produced by (a) adding Sc2O3, LU2O3, La2O3 and/or Y2O3 to Al2O3  or  H3BO3, (b) adding Tb4O7 or TbCl3, and Li2CO3 or Na2CO3 to the mixt.,  (c) firing the mixt. under the atmosphere at 450-800 deg.C  for  0.5-6 hr, (d) refiring it  at  1200-1600  deg.C  for  1-6  hr,  and  (e) cleaning the  obtd.  fluorescent  with  10  %  hydrochloric  acid solution. The fluorescent for a CRT has an excellent luminance and chromaticity.
Patent KR-920005226-B1 (KR)
Inventor: KATSUNO AKIRA
IPC: G06F7/552
Filed: 1989-07-14
Granted: 1992-06-29
Abstract: 내용 없음.
Patent KR-930004122-B1 (KR)
Inventor: ISHIGAWA TOMONORI
IPC: H01L21/8252
Filed: 1989-10-10
Granted: 1993-05-20
Abstract: 내용 없음.
Patent KR-940002687-B1 (KR)
Inventor: AKUTSU HIDETOSHI
IPC: C22C1/04
Filed: 1989-10-26
Granted: 1994-03-30
Abstract: 내용 없음.
Patent KR-920006346-B1 (KR)
Inventor: NAKAMURA YOSHIHIRO
IPC: B60T11/20
Filed: 1989-11-16
Granted: 1992-08-03
Abstract: 내용 없음.
Patent KR-920010227-B1 (KR)
Title: Coating agents for annealing of the electric steel sheet
Inventor: CHOE KYU-SUNG
IPC: C21D1/68
Filed: 1989-12-28
Granted: 1992-11-21
Abstract: The agent for  coating  an  oriented  electric  steel  sheet, comprising 2.8-3.2 wt.% silicon (Si), 0.040-0.120  wt.%  manganese (Mn), 0.010-0.030 wt.% sulphur (S), 0.005-0.020 wt.% nitrogen (N), 0.010-0.050 wt.% aluminum (Al), 0.020-0.150 wt.%  carbon  (C)  and the  balance  iron   (Fe)   and   inevitable   impurities,   after decarbonisation-annealing  the  sheet  comprises  magnesium  oxide (MgO) having citric acid activity as low as  100-200  seconds,  or the magnesium oxide (MgO) added with less than 4 wt.% of  titanium dioxide (TiO2) and less than 0.5 wt.% of boron (B) based compounds as auxialiary agent.
Patent KR-930002224-B1 (KR)
Inventor: MILLER LEROY J
IPC: C09K19/44
Filed: 1988-11-21
Granted: 1993-03-27
Abstract: 내용 없음.
Patent KR-960012156-B1 (KR)
Inventor: ISHIDA EISUKE
IPC: F16B33/00
Filed: 1989-02-23
Granted: 1996-09-16
Abstract: 내용없음
Patent KR-900002673-B1 (KR)
Title: Intermediate derivation for monosulfactams and their preparation
Inventor: SUNDEEN JOSEPH E
IPC: C07D277/38
Filed: 1990-02-16
Granted: 1990-04-23
Abstract: A beta-lactams for formula (I) and their pharmaceutically acceptable salts are prepared.  A specific cpd. is (3S(Z)-2-(((1-(2-amino-4- thiazolyl)-2-((4,4-dimethyl-2-oxo-1-(sulphooxy)-3azetidinyl)amino)2- 2oxaethylidene)amino)oxy)-pro-penoic acid.  A method of prepn. comprises reacting a cpd. of formula H2N-O-C (:CR3R4)-COOA1[A1= carboxyl-protecting gp.  with a 2-amino-4thiazolylglyoxylic acid of formula (II) [A2= H or amino-protecting gp. .  In the formulas, R1 and R2 are each H or alkyl or R1 and R2 are (CH2)n (in which n is 4-6); R3 and R4 are each H or C1-3 alkyl.
Patent KR-920006098-B1 (KR)
Title: Punching equipment for block band material of watch
Inventor: YUN HO-JIN
IPC: B26F1/16
Filed: 1990-06-26
Granted: 1992-07-27
Abstract: The  equipment  for  automatically  performing  feeding  and transfer of material, clamping and hole-drilling, comprises a main body (10) fixed on a base plate (5);  feeder  (40)  for  supplying material (2) to the body (10); clamping device (60)  for  clamping the material (2), drilling devices (70)(70')  for  drilling  holes (2a)(2b) on the side of the material. The main body has a  support plate (12) provided with a guide rail (33) on the  frame  (11)  of the plate (5); front/rear fixing plates (13)(13') having  parallel two plates (28)(28') with inlet (28a) on cantilever frame (26) for forming feeding path (A); movable plate (15) supported by  berings (16)(16') on the  rail  (33)  between  the  plates  (13)(13')  and connected with piston rod (17a) of an air cylinder (17).
Patent KR-930006277-B1 (KR)
Title: Method for fabricating stacted capacitor cell
Inventor: KANG DAE-KWAN
IPC: H01L27/108
Filed: 1990-07-13
Granted: 1993-07-09
Abstract: The laminating cell is mfd. by (a) forming a gate (1) on  the silicon substrate, and then implanting N- and P-  ion  to  form  a side wall spacer (2a), (b) forming a nitride film side wall spacer (2b), and then etching the substrate and forming a  silicon  oxide film  (3a), (c)  lifting  off  the  spacer  (2b),  depositing   a polycrystalline  silicon,  and  then  forming  a  capacitor   node electrode (5) and a polycrystalline silicon plug (12), (d) forming a dielectric thin film (6) along the electrode (5),  depositing  a polycrystalline silicon,  and  then  forming  a  capacitor  plate electrode (7), and (e) depositing a BPSG (3b) to  form  a  bitline contact, depositing a polycide to form a bitline  (9),  depositing the BPSG (3b) to form a contact on the gate (1), and depositing  a metal to form a wordline (10).
Patent KR-930001451-B1 (KR)
Title: Method for preparing feed
Inventor: LEE SANG-HYON
IPC: A23K1/00
Filed: 1990-07-16
Granted: 1993-02-27
Abstract: A feed for pig is prepd. by (a) mixing selected  waste  herbs with 0.3-0.5 wt.% Rhynchosia volubilis or licorice powder, 0.3-0.5 wt.% digestive  3.0-8.0  wt.%  mixt.  of  zeolite   and   calcium carbonate, and waste edible oil, and (b) drying the obtd. mixt. to obtain the final product. The obtd. feed for  pig  has  a  lot  of mineral and vitamin.
Patent KR-920008099-B1 (KR)
Inventor: TSUGETA GATSUNORI
IPC: D05B19/10
Filed: 1990-08-27
Granted: 1992-09-22
Abstract: 내용 없음.
Patent KR-0139102-B1 (KR)
Inventor: PALAU JOSEPH
IPC: D03C1/14
Filed: 1990-09-13
Granted: 1998-05-15
Abstract: 본 발명은, 각기의 2 중 스윙레버의 양단부에 관절 연결된 커플링 부재들이, 판독 및 전달 요소들에 관련되어 프로그램화된 작동 장치를 포함하는 선택시스템의 제어하에서, 진동운동으로 작동되는 플레이트들에 의해 지지된 가동견인 부재들과 상호 작용하는 유형의 조직기용 2 중 리프트 도비에 관한 것이며, 판독 및 전달 요소들이, 고정되도록 제공된 작동 장치의 후퇴 가능한 멈추개와 차례로 상호작용하도록 진동 플레이트들에 의해 지지된다.
Patent KR-940011035-B1 (KR)
Title: Toner concentration sensor in an image forming apparatus
Inventor: KIM KYONG-HWAN
IPC: G03G15/08
Filed: 1990-09-29
Granted: 1994-11-22
Abstract: The toner density sensor of a video formation apparatus improves a shape and a structure of a toner mixer so that the toner density may be sensed stably so that the proper toner density may be maintained. The toner density sensor is characterized that the mixer is formed by a connection of a mixer of an entrance side, a cylinder type rod and a mixer of an outlet side integrally on a single mixer shaft: the mixer of the entrance side being formed by a wing of a screw type and a bulkhead; the mixer of the outlet side being formed by only a wing of the screw type; and the cylinder type rod being situated between the mixers of entrance and outlet sides, for forming a toner density sensing space.
Patent KR-100196268-B1 (KR)
Title: Liquid crystal composition and liquid crystal display using said composition
Inventor: UCHIDA KEIKO
IPC: G02F1/137
Filed: 1990-12-13
Granted: 1999-06-15
Abstract: Liquid crystal compositions comprising: at least one of the compounds of the general formula (I) and at least one of the compounds of the general formula (II); and at least one of the compounds of the general formula (III), or further including at least one of the compounds of the general formula (IV) are provided. <CHEM> All the symbols are as defined in the appended claims. The compositions are suitable for use in highly multiplexed displays of the supertwisted birefringence effect mode.
Patent KR-930006945-B1 (KR)
Title: Method for producing alpha-aminoalkyl cycloketone
Inventor: PARK BYONG-UK
IPC: C07D225/08
Filed: 1990-12-29
Granted: 1993-07-24
Abstract: A method for preparing alpha-aminoalkyl  cycloketone  derivs. of formula (I) comprises (a) reacting a cpd. of formula (II)  with a cpd. of formula (CH2O)n and a cpd. of  formula  NHR3R4  (Mannich reaction); and (b) filtrating the obtd. salt., treating it with an alkali, and extracting it with an organic solvent  which  contains 0.5-2.0  mol   of   an   amine   selected   from   monoethylamine, diethylamine,  triethylamine,  monomethylamine,  dimethylamine  or trimethylamine.  In  the  formulas,  R1=H,  C1-6  alkyl,   phenyl, cyclohexyl, cyclohexenyl or substd. phenyl; R2=H, C1-6 alkyl,  CN, COOR5, CH2NHCOOR5 or CH2 NR5R6; R3 and R4 each =  H,  C1-6  alkyl, C1-3 hydroxyalkyl or benzyl; n = 0-2.