baber/WOPTO huggingface dataset:
Patent KR-920006147-B1 (KR)
Title: Telecontrol system
Inventor: SHIM YONG-JUN
IPC: H04M11/00
Filed: 1990-01-20
Granted: 1992-07-31
Abstract: When ring signals are  inputted,  the  readiness  of  a  DTMF demodulator  (IC1)  is  checked,  and,  if  the  output   of   the demodulator reads "*",  then  a  checking  finds  whether  "*"  is further inputted. If "*" is further inputted, the current timer-on time is read to output it to a  vocal  signal  generating  section (8). Then if the inputted key is "#", a checking finds whether "#" is further inputted. If  "#"  is  further  inputted,  the  current timer-off time  is  read  to  output  its  reading  to  the  vocal generating section (5), while, if "#" is not inputted no more, the timer-off data is supplied to the vocal generating section (8).
Patent KR-0129089-B1 (KR)
Inventor: MITSHISHITA KUNIHIKO
IPC: F28F9/02
Filed: 1990-02-16
Granted: 1998-04-07
Abstract: 내용 없음.
Patent KR-940005367-B1 (KR)
Inventor: TAKAKI YASUHIRO
IPC: D05B71/02
Filed: 1990-03-06
Granted: 1994-06-17
Abstract: 내용 없음.
Patent KR-930003790-B1 (KR)
Title: Dielectric meterial
Inventor: LEE SANG-IN
IPC: H01G4/10
Filed: 1990-07-02
Granted: 1993-05-10
Abstract: The dielectric substance for  a  capacitor  of  semiconductor device is prepared by substitution Sr and Ba  with  La  by  adding more than 2 mole% La2O3 to (Sr,Ba)Nb2O6  so that the  dielectric substance has a composition of formula  (SrxBa1-x)1-3y/2LayNb2O6, where 0.25 <= x <= 0.5 and 0.04 <= y. The  semiconductor  equipped with a thin film capacitor using the  above  dielectric  substance improves the degree of integration  of semiconductor element by increasing the dielectric constant.  And  the  characteristics  of thin film do not deteriorate in the manufacturing process.
Patent KR-930009888-B1 (KR)
Inventor: YOSHIMU ICHIRO
IPC: C03C25/10
Filed: 1990-07-05
Granted: 1993-10-13
Abstract: 내용 없음.
Patent KR-930006742-B1 (KR)
Title: Analog to digital converter capable of ccd
Inventor: KIM YONG-KWAN
IPC: H03M1/12
Filed: 1990-07-12
Granted: 1993-07-23
Abstract: The A/D converter for moving electric charges by using a  CCD to reduce a chip size without an  encoder  comprises  a  CCD  gate input unit for inputting the electric charges corresponding to  an analog input signal to a CCD gate region, the CCD  gate  unit  for filling a number of potential  wells  (PW1-PWn)  having  sizes  of 2(n-1) to 20 with the inputted charges, a number of floating gates (FG1-FGn) for sensing the charge of each potential well, a digital signal output unit for converting the sensed  charge  state  to  a digital signal, and a reset unit formed at the  side  of  the  CCD gate to reset the sensed charge of the potential well.
Patent KR-930005265-B1 (KR)
Title: Process and apparatus for electroplating a metallic strip
Inventor: COLIN GERARD
IPC: C25D7/06
Filed: 1990-10-26
Granted: 1993-06-17
Abstract: The apparatus comprises a set of cells (25a, 25b) of radial type. The electrical supply to the strip (16) to be coated forming the cathode is ensured by means of two electrically conductive diverting rollers (20) mounted so that each rotates around an axis parallel to the axis of the drum (8) of the electrolysis cell. The diverting rollers (20) are arranged at these partially below the upper level of the drum (8), near its outer surface. Two supporting rollers (21a, 21b) associated with each of the diverting rollers ensure that the strip is supported against the diverting roller over a substantial part of its periphery and as far as a region close to the part of the outer surface of the drum (8) which is immersed in the electrolyte liquid (2). The invention applies in particular to the zinc electroplating of a steel sheet. 
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Patent KR-100227044-B1 (KR)
Inventor: WESCOTT KERMIT RICHARD
IPC: H02K9/24
Filed: 1990-10-29
Granted: 1999-10-15
Abstract: 본 발명은 원통형 코어(16)를 구비한 고정자(14)와, 상기 원통형 코어(16)내에 회전되도록 설치된 축(20)을 구비한 회전자(18)와, 발전기(12)의 양쪽 단부에서 상기 축(20)을 둘러싸서 형성되는 밀봉재(26)로써 이들 각 밀봉재(26)에는 수소측(28)과 공기측(30) 및 밀봉재(26) 각 쌍의 수소측(28)으로 오일을 공급하기 위한 제1 오일 공급수단(32)과 밀봉재(26) 각 쌍의 공기측(30)으로 오일을 공급하기 위한 제2 오일 공급수단(34)이 포함되어 있고, 상기 각 밀봉재(26)의 제1 및 제2 오일 공급수단을 연결시켜 이들 사이에서 열교환을 이루도록 구성 배치된 열교환기(36)를 구비하는 수소이용 내측냉각식 발전기(12)를 포함하는 터어빈 발전기 시스템(10)내의 축 밀봉재 냉각방법 및 장치에 관한 것이다.
Patent KR-930006620-B1 (KR)
Title: Low noise dram cell
Inventor: LEE KYU-HONG
IPC: H01L21/8229
Filed: 1990-11-06
Granted: 1993-07-21
Abstract: The dynamic RAM removes induced memory cell  noise  by  offsetting with  a differential amplifier in the memory, a pair of reference memory cells having the same characteristics are each consisted of one bit memory cell to read and write, and this results in the same noise effects to both the reference memory cells.  The equally distributed noise can be offset by the differential amplifier, and the DRAM misoperation can be protected by reducing external noise or internal array noise.
Patent KR-930000110-B1 (KR)
Title: Process for making decorative pearl articles
Inventor: PARK BUNG-RAE
IPC: B44C5/04
Filed: 1990-12-14
Granted: 1993-01-09
Abstract: The method for manufacturing the molding of tablet comprises (A) making a resin mold which forms the front  unevenness  on  the upper side; (B) spreading a release parting agent in the mold  and drying; (C) pouring the transparent resin (3A) in 3-4 mm depth and curing for 10 min; (D) pouring the second transparent  resin  (3B) and simultaneously embedding the resin/motor-of-pearl (3) which is fixed with the  arranged  mother-of-pearl  (31)  by  coating  with transparent  resin  (32);  (E)  injecting  black  resin  (4A)  and combining the fixing plate (4); and (F) injecting black resin (4B) and curing. The memorial tablet is made by bonding the contents in the center groove of the molding.
Patent KR-940003193-B1 (KR)
Title: Coating composition
Inventor: KIM DONG-HYON
IPC: C09D133/00
Filed: 1990-12-26
Granted: 1994-04-15
Abstract: The UV curable coating compsn. comprises urethane acrylate, reactive monomer, photo-initiator and labeling agent. The urethane acrylate is the multi-functional urethane acrylate of formula (I), and is included in 10-80 wt.% of total compsn., and has 4-10 unsatd. gp.. The urethane acrylate (I) is prepd. by: preparing the ester cpd. contg. hydroxy gp. in the terminals and 2-5 unsatd. gp. by esterification reacting the multi-valance alcohol and unsatd. carboxylic acid; reacting the ester cpd. with diisocyanate. In formulas, X is ester cpd. contg. 2-5 unsatd. gp.; Y is aliphatic, cyclic aliphatic or aromatic cpd.. The obtd. compsn. has good durability, scratch resistance, anti-weathering property.
Patent KR-930004804-B1 (KR)
Title: Speaker
Inventor: CHOE BOM-TAEK
IPC: H04R1/28
Filed: 1990-12-27
Granted: 1993-06-08
Abstract: The speaker filters all the soundwaves radiated to  the  rear side of the speaker and  outputting  the  filtered  soundwaves  to reduce the noise derived from unwanted reflection. It  includes  a filtering section for filtering all the soundwaves radiated to the rear side, and a circulating/outputting section for outputting the filtered soundwaves while circulating.
Patent KR-930005653-B1 (KR)
Title: Clock variable circuit
Inventor: HONG HYON-SOK
IPC: H03K21/00
Filed: 1991-01-12
Granted: 1993-06-23
Abstract: The circuit repressing the generation of glitch and  ensuring the minimum/maximum clock width comprises:  a  variable  selecting signal generator (10) including: a  decoder  (11)  outputting  the o-ring signal according to the mode selection input,  an  inverter inverting the output of decoder, a first register (12) whifting he output of inverter and  a  second  register  (13)  outputting  the shifted output of the first register; a variable switching section (40) outputting one of the 2,4,8 frequency demultiplying clocks; a variable mode selecting  detector  (20)  outputting  the  detected signal; a generator (31) generating the  variable  mode  selecting signal according to the counting ripple carry signal;  a  variable clock output section (50).
Patent KR-940000579-B1 (KR)
Title: Apparatus for filtering freely and discriminating brightness and chroma signal for tv
Inventor: BANG JUN-WON
IPC: H04N9/78
Filed: 1991-04-03
Granted: 1994-01-24
Abstract: The apparatus for separating and pre-filtering brightness and color signal in screen system comprises a frame and line filter for filtering color signal from the compound video signal, a line inter-related detector for comparing the present line with pre-line and post-line, a motion detector for determining the motion amount and outputting it, a signal processor for processing the outputs of two filters and two detectors, a first filter for filtering the total color signal from the output of the processor, a second filter for filtering the output of the first filter, and a subtractor for outputting the brightness signal by subtracting the output of the second filter from the delayed brightness signal. Thus this invention prevents degrading the picture even though the motion exists and line inter-relation is plentiful.
Patent KR-970000111-B1 (KR)
Inventor: KOBAYASHI MASADO
IPC: H01H11/00
Filed: 1991-05-10
Granted: 1997-01-04
Abstract: 내용 없음.
Patent KR-960010361-B1 (KR)
Inventor: TAKADA MASAHARU
IPC: B01D1/00
Filed: 1991-05-29
Granted: 1996-07-31
Abstract: 내용없음
Patent KR-930009785-B1 (KR)
Title: Massager for skin
Inventor: KIM MYONG-JUNG
IPC: A61H23/02
Filed: 1991-06-18
Granted: 1993-10-11
Abstract: The massage apparatus comprises a power supplier (1) which is composed of a resistance (R1), capacitors (C1,C2),  a  diode  (D1) and  a  transistor  (Q1);  a  switch  part  composed  of  switches (SW1-SW3); a circuitry for  setting  (4)  the  operating  time  on buzzer composed  of  a  D  flip-flop  (FF1-FF4)  (3),  resistances (R1-R11), capacitors (C3,C4) and  a  transistor  (Q2);  the  first vibrator composed of resistances (R12,R13), a  capacitor  (C5),  a diode (D5) and a schmidt trigger (ST1); the second vibrator  (ST2) composed of resistances (R14,R15), capacitor (C6)  and  a  schmidt trigger; the third vibrator; and the display circuit  composed  of resistances (R21-R24), and light emitted diodes (LED1,LED2).
Patent KR-960009152-B1 (KR)
Inventor: KUO ALEX CHIA-HUEI
IPC: B01F3/08
Filed: 1991-06-26
Granted: 1996-07-16
Abstract: 내용없음.
Patent KR-940002124-B1 (KR)
Title: Control device and method of multi-link sorter in copier
Inventor: KIM JONG-HO
IPC: G03G15/00
Filed: 1991-06-28
Granted: 1994-03-17
Abstract: a CPU controlling the overall system; an interface for connecting the state signal of the copy machine and the control signal; a senser for sensing the in-out state of copy paper and notifies the paper state to the CPU; another sensor for checking the in-out state of the copied paper coming out to the empty tray; a wire driving motor (15); one more sensor for checking the door-open-state of the paper sorter.
Patent KR-950002826-B1 (KR)
Title: Process for the preparation of porous polyolefin separation membranes via thermally-induced phase separation
Inventor: KIM JAE-JIN
IPC: B01D67/00
Filed: 1991-08-09
Granted: 1995-03-27
Abstract: The method is for manufacturing the porous polyolephin seperation film from the solution mixed with the polyolephine(polyetylene or polyprophilene) and a diluent(a natural soy bean oil, a olein acid or a renolein acid). The method comprises a step of forming the porous seperation film by spraying the mixed solution; a step of solidifying the film by use of the solidification solvent and extracting the diluent; a step of evaporating the remaining diluent and the extraction solvent.
Patent KR-930010596-B1 (KR)
Inventor: AGRAWAL RAKESH
IPC: C01B23/00
Filed: 1991-08-26
Granted: 1993-10-30
Abstract: 내용 없음.
Patent KR-970002250-B1 (KR)
Title: MICROORGANISM PRODUCING 5óÑ-XANTHYL ACID
Inventor: JUNG SUNG-OH
IPC: C12N1/20
Filed: 1991-10-14
Granted: 1997-02-26
Abstract: The microorganism (KFCC 10741) producing 5'-xanthylic acid is claimed. This microorgnism which belongs to a variant of Brevibacterium ammoniagenes 10352 capable of producing 5'-xanthylic acid is leaky auxotrophic to adenine and guanine in the growth, contains an inactivated 5'-xanthylic acid aminase, and has the character of the resistance to guanosine analog and the tolerance to osmosis.
Patent KR-970001684-B1 (KR)
Title: Thrombin-binding substance and process for preparing the same
Inventor: DOI TAKESHI
IPC: C07K14/745
Filed: 1991-11-22
Granted: 1997-02-13
Abstract: Thrombin-binding substances capable of promoting anti-thrombin III activity and inhibiting platelet aggregation, and by themselves possessing anti-thrombin activity are disclosed. The thrombin-binding substances are useful as an effective component of anticoagulant agents, and can be produced inexpensively in a large scale.
Patent KR-0172958-B1 (KR)
Title: Illuminance controlling device
Inventor: OSHIDA MAMORU
IPC: C08J7/00
Filed: 1990-10-09
Granted: 1999-05-01
Abstract: An illuminance controlling device according to the present invention comprises: a conveyor (5) for conveying prods. (4); a first shielding member (I) disposed between the conveyor (5) and an irradiating device opposed to the conveyor (5) and slidable along the conveying direction of the conveyor (5); and a second shielding member (2) opposed to the first shielding member (1) and slidable in the conveying direction of the conveyor (5). An illuminance by the irradiating device (6) to the products (4) is controlled by a space formed between the first shielding member (1) and the second shielding member (2). @(14pp Dwg.No.2/11)@.
Patent KR-940011405-B1 (KR)
Title: Elevator data transmission method
Inventor: CHON SANG-HO
IPC: B66B1/00
Filed: 1992-02-06
Granted: 1994-12-15
Abstract: In a data set in which two floor names forming one floor communication data, a hole bit lamp data, hole bit input data respectively form a start bit, 8-bit data and 10-bit data which is a stop bit, a method is provided for transmitting data of an elevator in which 1 or 0 bit is transmitted by being inserted to the ninth bit as if the bit number of 1 is an odd number or an even number of the eight-bit data between the 8-bit data and the stop bit data, and thereby checking if the serial transmission data is varied by checking the ninth data from a master or slave side.
Patent KR-940007273-B1 (KR)
Title: Control device of laser heat-treatment
Inventor: HAN YU-HUI
IPC: C21D1/34
Filed: 1992-03-07
Granted: 1994-08-12
Abstract: The heat cycle controller for saw blade heat treatment using laser is disclosed in which a parabolic mirror receiving a laser beam is installed in front of a saw blade, another parabolic mirror is installed at the rear of the saw blade, plane mirrors are installed horizontally therewith, and spherical mirrors are installed to receive beams from the plane mirrors, thereby obtaining a high-quality saw.
Patent KR-950006564-B1 (KR)
Title: Service data back-up/restoration method in the front and back end dualization structure
Inventor: HAN JUNG-HON
IPC: H04L12/24
Filed: 1992-04-22
Granted: 1995-06-16
Abstract: The method improves the communication service system performance and fidelity, holds the service subscriber data for service call processing in the memory. The method employs transaction input/output link units (11,12), signal message processors (13,14), an operating/management processor (23), LAN devices (15,16), service processors (17,18), a service data manager (21), and a service master data (22). The method includes the steps of; changing the service master data (22); transfering the data to the corresponding service processor (17 or 18); examining the status of service processors (17,18), reexecuting the exchange processing.
Patent KR-950010081-B1 (KR)
Title: Novel quinolone carboxylic acid derivatives
Inventor: KIM DAE-YONG
IPC: C07D207/12
Filed: 1992-07-31
Granted: 1995-09-06
Abstract: The quinolone carboxylic acid deriv. and its pharmaceutically acceptable salt of formula (I) is prepd. by reacting a quinolone carboxylic acid of formula (II) with an amine of formula (III) in the presence of a solvent i.e. tetrahydrofurane, pyridine, chloroform, acetonitrile ethanol and/or dimethyl formamide at 50-190 deg. C for 1-48 hr. In the formulas, R1 is H or C1-6 alkyl; R2 is H or C1-3 alkyl; X is O or S; Y is H, C1-4 alkyl, C2-4 alkenyl, C1-3 cycloalkyl or amino; W is halogen ; R3 is H, C1-4 alkyl, acyl, C3O6 cycloalkyl, aryl or heteroaryl; HA is (in) organic acid; n is o or 1. The cpd. (I) has a good bactericidal activity against gram-positive or gram-negative bacteria.
Patent KR-950009375-B1 (KR)
Title: Nox removing apparatus for aluminium oxygen film
Inventor: LEE IN-HWA
IPC: B01D53/38
Filed: 1992-08-17
Granted: 1995-08-21
Abstract: The system employs the anodized aluminum coating formed by anode oxidation method as a catalyst carrier to remove nitric oxides(NOx) in exhaust gasses. An aluminum tube is anodized for an oxide layer of porosity to be formed on the inner surface to absorb catalyst activator substance, pref. V2O5, so as to react with nitric oxides in the gasses passing through the tube for removal of the harmful oxides.
Patent KR-950009374-B1 (KR)
Title: Exhust gas treatment and collector for semiconductor manufacturing process
Inventor: CHOE TAE-HYON
IPC: B01J19/08
Filed: 1992-08-21
Granted: 1995-08-21
Abstract: The apparatus captures with a plasma reactor and a cyclone various harmful gasses and solids inevitably generated in the process of chemical vopour deposition, before they reach a vacuum pump. The apparatus includes a main reactor and a vacuum pump between which a collector is disposed to treat and collect unreacted gasses and solids are produced in reaction to be discharged. The plasma reactor equips a power source within it and the cyclone collector has a collection container placed under itself.
Patent KR-960001446-B1 (KR)
Inventor: SUZUKAWA HIROO
IPC: G07D1/00
Filed: 1992-10-01
Granted: 1996-01-30
Abstract: 내용 없음.
Patent KR-960014017-B1 (KR)
Inventor: ICHIKAWA KAZUO
IPC: H01F27/24
Filed: 1992-10-28
Granted: 1996-10-11
Abstract: 내용 없음.
Patent KR-950006056-B1 (KR)
Title: Revival error correction apparatus of image writing equipment
Inventor: MUN BYONG-JUN
IPC: H04N5/94
Filed: 1992-10-31
Granted: 1995-06-07
Abstract: The apparatus corrects the time axis error of the video cassette recorder and compensates the drop out error. The apparatus comprises: a write address generator unit reset by the horizontal synchronous signal; a memory control unit generating the write inhibition signal while the drop out is detected; a line memory outputting the image with the horizontal period; and a phase inversion unit inverting the color signal after receiving the line horizontal unit.
Patent KR-950006752-B1 (KR)
Title: Picture data processing method for fax
Inventor: NO JIN-TAE
IPC: H04N1/40
Filed: 1992-11-12
Granted: 1995-06-22
Abstract: The method minimizes transformation of image data due to resolution transformation after image processing and reduces internal processing time. It comprises : (i) a step(21) of searching if the facsimile number of the other side memorized in parameter memory exists or not; (ii) a step(22) of fetching and analyzing necessary information for image processing of type of the other side; (iii) a step(23) of scanning and reading a copy; (iv) a step(24) of processing image according to resolution and paper size; (v) a step(25) of storing a processed image code and data in memory; (vi) a step(26) of executing transmission information exchange with the other facsimile; (vii) a step of transmitting a stored image data.
Patent KR-100248315-B1 (KR)
Title: Monoclonal antibody recognizing the c-terminus of hbnp
Inventor: TSUJI TETSUO
IPC: C12P21/08
Filed: 1992-11-14
Granted: 2000-03-15
Abstract: A hybridoma producing a monoclonal antibody recognizing the C-terminus of human brain natriuretic peptide (hBNP) was cultivated in a medium or the abdominal cavity of a mouse to recover the monoclonal antibody from the medium or ascites accumulated in the abdominal cavity. An immunoassay of hBNP was established using the monoclonal antibody. The immunoassay of hBNP of this invention is so sensitive that the minimum detection limit is 1 pg/ml and can therefore determine an hBNP level in blood plasma directly, that is, without the extraction of hBNP from blood plasma. It is useful for diagnosing diseases such as hypertension and the like and states of heart, kidney and the like with taking an increase/decrease of an hBNP level as an index.
Patent KR-0136567-B1 (KR)
Inventor: ISHII TOSHIYUKI
IPC: C08G59/16
Filed: 1992-12-05
Granted: 1998-04-25
Abstract: 디글리시딜 에테르 또는 에스테르 및 유기 디이소시아네이트간의 반응에 의해 생성된 옥사졸리돈 고리-함유 에폭시수지(a)는 에폭시기에 비례하는 활성수소원자의 견지에서 화학양론적 보다 적게 1가 또는 2가알코올, 모노-또는 디카르복실산등의 제 1활성수소화합물(b)과 반응하고, 이이서 잔존하는 에폭시기에 비례하는 화학양론적 양으로 아민 또는 황화물-산 혼합물 또는 폴리카르복실산등의 제 2활성수소화합물(c)과 반응한다. 
     얻어진 친수성 개질수지는 이온화될 수 있는 기를 말단에 가진 옥사졸리돈 고리-함유  주쇄를 지니다. 수성페인트는 가교제 또는 중화제를 함유하는 수성매질에서 분산에 의해 친수성 개질수지로부터 제조된다.
Patent KR-950009599-B1 (KR)
Title: Using charge calculating apparatus and method of facsimile
Inventor: PARK MAN-KYU
IPC: H04N1/00
Filed: 1992-12-24
Granted: 1995-08-24
Abstract: The apparatus comprises a tone generating unit for decoding a telephone number dialed from a telephone or a key operating unit of a facsimile; a first memory for outputting a corresponding local number and a charge data corresponding to a unit time of the local area depending upon a value decoded from the tone generating unit; a timer for counting a call start time during a call and a call end time; a second memory for storing the call time counted in the timer and a corresponding local area charge outputted from the first memory; a crystal display unit for displaying charge data accumulatively counted in the second memory, the telephone number outputted from the first memory, and the charge data per time according to a key signal of the key operating unit.
Patent KR-950012573-B1 (KR)
Title: Coating method and device thereof of inbar shadow mask
Inventor: CHON HYON-TAE
IPC: H01J9/14
Filed: 1992-12-30
Granted: 1995-10-19
Abstract: preheating a shadow mask for blackening process at a temperature of from about 160 to 180 centigrades; blackening the preheated shadow mask by heating that mask at the atmosphere of Carbon Oxide or Carbon Dioxide - at the rate of from about 1 : 10 to 1 : 19 - , at a temperature of from about 620 to 700 centigrades from 20 to 30 minutes; and taking out the blackening-processed shadow mask by cooling at a temperature of from about 160 to 250 centigrades.
Patent KR-100193467-B1 (KR)
IPC: C07D301/16
Filed: 1990-09-12
Granted: 1999-06-15
Abstract: A process for the preparation of a peroxycarboxylic acid of general formula (I), wherein R is an organic residue, in particular a linear or branched alkyled group, an aryl group or an alkyl aryl group each of which is optionally substituted with one or more groups, the process comprising treating a carboxylic acid of the general formula R-COOH, wherein R has the meaning indicated above, with hydrogen peroxide or a precursor thereof in the presence of an enzyme catalyst is described. The enzyme catalyst is preferably a hydrolase, such as a protease or a lipase. Also, a process for the oxidation of organic compounds with the peroxycarboxylic acids thus prepared is described.
Patent KR-960010853-B1 (KR)
Inventor: OGAWA TAKAO
IPC: H03L3/00
Filed: 1991-08-06
Granted: 1996-08-09
Abstract: 내용 없음.
Patent KR-960007743-B1 (KR)
Title: Method of producing 5'-guanil acid with recombinant microorganism
Inventor: HAN JONG-KWON
IPC: C12N15/52
Filed: 1993-01-06
Granted: 1996-06-11
Abstract: The 5'-guanil acid(GMP) is made by (a) culturing a microorganism belonging to brevibacterium ammoniagenes genus for mass production of xanthylic acid (XMP); (b) reacting the XMP with xanthylic acid aminase(XMP aminase) expressed by culturing a microorganism belonging to brevibacterium ammoniagenes genus character-conversed by the gene of XMP aminase derived from brevibacterium ammoniagenes genus.