baber/WOPTO huggingface dataset:
Patent KR-20010031703-A (KR)
IPC: G06F17/50
Filed: 1999-09-02
Abstract: 여기에 설명되는 시스템 시뮬레이션 방법은 마이크로 컨트롤러/마이크로 프로세서 및 예정된 신호 패턴을 포함하는 주변 모듈의 시뮬레이션을 위한 단계의 제 1 시퀀스와, 상기 시뮬레이션에 의해 야기되는 시스템 상태의 조회 및 평가를 위한 단계의 제 2 시퀀스를 그 특징으로 한다.  상기 제 2 시퀀스를 실행하기 위한 상기 제 1 시퀀스는, 상기 제 1 시퀀스에 기입된 마크에 따라 차단되고 상기 제 2 시퀀스는 그 평가에 매칭되어 가속된 동작 모드로 실시된다.
Patent KR-20010032374-A (KR)
Title: 섬유팩 제조 방법
IPC: E04B1/76
Filed: 1998-11-23
Abstract: 수집면 (14) 을 따라서 기계 방향으로 정렬된 2 이상의 광물 섬유 스피너 (12) 를 사용하여 용융 광물 재료로부터 2 이상 세트의 광물 섬유를 원심분리하는 단계,  각각의 광물 섬유 세트를 상기 광물 섬유 스피너 (12) 중의 하나의 하부의 하방 이동 베일 (24) 로 배향시키는 단계,  각각의 광물 섬유 스피너로 (12) 부터 이격된 1 이상의 오리피스형성 다이 (50) 로부터 하방으로 이동하는 정렬된 유기 섬유 열 (52) 을 형성하고 그 열 (52) 을 광물 섬유와 접촉하도록 배향시키는 단계, 및 광물 섬유와 유기 섬유를 섬유팩으로서 수집하는 단계를 포함한다.
Patent KR-20010040589-A (KR)
Title: 부가 데이터 링크 시스템을 갖춘 텔레비전 수신기
IPC: H04N5/445
Filed: 1999-11-22
Abstract: 본 발명은 텔레비전 화상과 결합된 텔레텍스트 따위의 데이터를 수신하기 위한 텔레비전 수신기에 관한 것이다. 이러한 데이터의 페이지를 링크 하는 방법에는 여러 가지가 있으며, 디스플레이 스크린 상에 각기 다른 색상의 식별 기호(R1)(Y1)(G1)(B1)를 제공하고 원격 제어 장치(RCU) 상에 그에 대응하는 색상의 버튼을 제공함으로써 링크 된 페이지에 쉽게 액세스하기 위한 배열은 공지되어 있다. 본 발명은 현재 표시되고 있는 페이지에 추가 페이지를 링크 하는 방법을 나타내는 추가 식별 기호(FIS)를 제공한다. 그러한 링크의 예로 FASTEXT, TOP, 애용 페이지가 있다.
Patent KR-20010042867-A (KR)
Title: 냄새 흡착 능력을 갖는 섬유성 물품 및 그 제조 방법
IPC: A61F13/472
Filed: 1999-04-20
Abstract: 체액 흡수용 섬유성 흡수용품(10)을 제공한다.  본 물품은 체액 흡수에 적합한 섬유성 재료(12) 및 체액으로부터 유래한 냄새를 감소시키기 위해 상기 섬유성 재료(12) 내에 위치한 분자체(18)를 포함한다.  상기 분자체(18)는 교환 가능한 양이온을 포함하는 클리노프틸로라이트류 또는 캐바사이트류의 천연 제올라이트이다.
Patent KR-20010052274-A (KR)
IPC: G01S5/00
Filed: 1999-04-13
Abstract: Methods and apparatuses which use satellite position system (SPS) reference receivers. In one example of the invention, a plurality of SPS reference receivers, such as Global Positioning System (GPS) reference receivers, each having a known position, are dispersed over a geographical region. Each of the SPS reference receivers transmits into a communication network, a representation of at least a portion of a satellite navigation message, such as satellite ephemeris data, received from SPS satellites in view of the particular SPS reference receiver. A plurality of digital processing systems, such as a first and a second digital processing systems, are coupled to the communication network to receive the satellite ephemeris data which is transmitted through the communication network. The first digital processing system receives a first pseudorange data from a first SPS mobile receiver and calculates a first position information of the first SPS mobile receiver from a representation of the first pseudorange data and from satellite ephemeris data received from the communication network. The first digital processing system may also receive pseudorange corrections from the communication network and use these corrections to correct the first pseudorange data to provide the representation of the first pseudorange data. The second digital processing system receives a second pseudorange data from a second SPS mobile receiver and calculates a second position of the second SPS mobile receiver using the second pseudorange data (which may be corrected using pseudorange corrections from the communication network) and using satellite ephemeris data received from the communication network. In one embodiment of this example of the invention, the mobile SPS receivers are communicatively coupled with the digital processing systems in part through a wireless cell based communication system. A further digital processing system may also be coupled to the communication network to receive pseudorange correction data and to provide merged pseudorange correction data to the digital processing systems through the communication network.
Patent KR-20010043294-A (KR)
Title: 팔찌
IPC: A44C5/10
Filed: 1999-05-07
Abstract: 본 발명은 보이지 않는 피벗핀(2,2',2")을 통해 연결된 상호 연결되는 링크(1,1',1")로 구성되어 있는 팔찌에 관한 것인데, 링크는 주조에 의해 생산되고 링크 중 하나 상에 배열되어 있는 피벗핀을 다음 링크의 대응 개구부 내로 직접 연결함으로써 링크를 상호 연결함으로써 팔찌는 갖추어 진다.
Patent KR-20010052323-A (KR)
Title: 자궁 조직 수집기
IPC: A61B10/02
Filed: 1999-03-23
Abstract: 본 발명에 의한 자궁 조직 수집기(10)는 루멘(16)내로 자궁 조직이 흡입될 수 있도록 형성되는 구멍(14)을 갖는 캐뉼러(12)와, 상기 캐뉼러(12)의 말단부(18)를 유동에 의해 구부러뜨릴 수 있도록 상기 캐뉼러의 말단부(18)에 고정되는 하나 이상의 가이드 와이어(74, 76)를 포함한다.
Patent KR-20010053340-A (KR)
Title: 접착재에서의 액정 디스플레이 온도 측정 장치 및 방법
IPC: G02F1/1333
Filed: 1999-06-17
Abstract: 본 발명은 온도 측정 수단을 포함하는 액정 디스플레이(LCD)장치를 개시한다. LCD(1)의 톱(2)과 바닥(3) 시트 사이에 또는 LCD와, 온도 의존 전기 특성을 갖는 인쇄회로 기판 또는 터치 스크린과 같은 커버링 시트 사이에 배치된, 접착재는 온도 프로브로서 사용된다. 전기 특성은 바람직하게는 전기 전도률이며 접착재(5)는 바람직하게는 LCD(1)의 동작 영역(4)을 에워싼다. 그러한 장치의 제조 및 동작 방법 역시 개시된다.
Patent KR-20010070417-A (KR)
Title: Casting having an enhanced heat transfer, surface, and mold and pattern for forming same
Inventor: ABUAF NESIM
IPC: B22C9/04
Filed: 2001-01-05
Abstract: PURPOSE: Casting having an enhanced heat transfer, surface, and mold and pattern for forming same is provided, which improves the heat transfer characteristics of various surfaces of components requiring the surface roughness equivalent to that of a metal component used in a turbine engine. CONSTITUTION: The casting(60) includes a heat transfer surface(80) having a plurality of cavities. The plurality of cavities include a density of at least about 25 cavities per square centimeter to about 1,100 cavities per square centimeter resulting in increased surface area and therefore enhanced heat transfer capability. Also disclosed is a mold for forming a pattern for molding the casting(60). The mold includes a surface defining a portion of a chamber to which are attached a plurality of particles having an average particle size in a range of about 300 microns.
Patent KR-20020059514-A (KR)
Title: The selective adsorption of heavy metal ions using molecular-imprinted adsorbents synthesized with low cost silica sources
Inventor: CHO YEONG SEONG
IPC: B01J20/10
Filed: 2001-01-08
Abstract: PURPOSE: A method for preparing a mesoporous-silica that is bound with chelating-ligand for selective adsorption of heavy metal ions in wastewater is provided. CONSTITUTION: The preparation method of the mesoporous-silica includes the steps of reaction of silica precursor selected from sodium silicate or sodium metasilicate with structure derivative selected from Triton X-100, Tergitol 15S12, Pluronic P123, neutral-surfactant of amine series and polyethylene-polypropylene block copolymer; hydrolysis and condensation of silica precursor in the presence of hydrochloric acid as catalyst; drying at ambient temperature and then drying again at 50-150deg.C; removal of residual surfactant by soxhlet extraction using ethanol, followed by drying; forming chemical bond of a template obtained in above step with chelating ligand that is bound with heavy metal ions, wherein the chelating ligand that is bound with heavy metal ions is selected from aminopropylethoxysilane, aminoethyl aminopropyl methoxysilane, trimethoxysilyl propyl diethylenetriamine, trimethoxysilylpropyl ethylenediaminetriacetate sodium salt and its mixture; elimination of residual chelating ligand and heavy metal ions by using alcohol and acid solution; and drying at ambient temperature for 10-48 hours and then drying again at 50-150deg.C for about 1 hours.
Patent KR-20020060847-A (KR)
Title: A short tube for heat exchange cycle
Inventor: CHO HYEON UK
IPC: F25B41/06
Filed: 2001-01-12
Abstract: PURPOSE: A shot tube for both of heating and cooling of heat exchange cycle is provided to simplify structure for decompression of working fluid. CONSTITUTION: A shot tube(50) includes a casing(52) forming an exterior of the shot tube and having an inner passage fluidically connected with components of a heat exchange cycle; a fixed expansion part(60) fixed in the casing and having an expansion passage(62) relatively narrower than the inner passage of the casing to expand working fluid; and a movable expansion part(70) moving in flowing direction of working fluid and having an expansion passage(72) selectively and fluidically connected with the fixed expansion part to selectively expand working fluid.
Patent KR-20020067832-A (KR)
Inventor: BAEK BAN SEOK
IPC: A23L2/66
Filed: 2001-02-19
Abstract: PURPOSE: Provided is fruit juice containing specific IgY for anti-E.coli and anti-Helicobacter pylori which is obtained by antigenizing E.coli and Helicobacter pylori then inoculating them simultaneously into a chick. CONSTITUTION: The fruit juice is characterized by containing specific IgY for anti-.coli and anti-Helicobacter pylori, which is extracted from the yolk and includes a powdery type and a liquid type.
Patent KR-20010085486-A (KR)
Inventor: IIDA MICHIHIKO
IPC: G11B20/10
Filed: 2001-02-22
Abstract: PURPOSE: A recording medium, a recording apparatus, and a reading apparatus are provided to easily and correctly determine the physical characteristics of a recording medium by recording the physical characteristic information in a sub-code. CONSTITUTION: In a recording medium, main data and a sub-code are recorded. The physical characteristic information includes material information, the type of a disk, a linear velocity, a track pitch, the inertia moment, the size of a recording medium, and the configuration of the recording medium. The physical characteristic information is recorded in the sub-code of a read-in area of a recording/reproducing unit area. Since the physical characteristic information is recorded in the sub-code of the recording medium, physical characteristic information is obtained easily and accurately.
Patent KR-20020069713-A (KR)
Inventor: HWANG HU GEUN
IPC: B23K9/133
Filed: 2001-02-27
Abstract: PURPOSE: A spool for welding wire is provided in which a side surface part of the spool is fabricated in a polygon, or a plurality of protrusions are formed with being spaced apart from each other in a certain distance so that the spool does not roll even on an inclined plane. CONSTITUTION: In a spool for coiling welding wire comprising a central part and a pair of side surface parts, the spool for coiling the welding wire is characterized in that the side surface parts(11) are formed in a polygon shape so that the side surface parts(11) are roughly line contacted with the ground(15). In a spool for coiling welding wire comprising a central part and a pair of side surface parts, the spool for coiling the welding wire is characterized in that a plurality of protrusions(17) are formed on the outer circumference of the side surface parts(11) so that the side surface parts(11) are contacted with the ground(15) at two or more points.
Patent KR-20020071154-A (KR)
Title: Method for home zone list update using general call in cdma system
Inventor: KIM TAE YEONG
IPC: H04W48/04
Filed: 2001-03-05
Abstract: PURPOSE: A method for updating an HZ(Home Zone) list using a general call in a CDMA(Code Division Multiple Access) system is provided to determine a new RTDmin value and an offset value using gathered statistics data in case that the statistics data are over the number of specific times, compare the determined RTDmin value and offset value with a conventional HZ list, and optimize an HZ list of an existent base station. CONSTITUTION: All data with 0 and 1 are stored as a file of a name such as a CALL.MMDD in /users2/1dpc/DATA/ENIP directory among general call data transmitted from an MSC(Mobile Switching Center) ENIP(a,b). It is checked whether the stored data are an HZ call(c). If the stored data are the HZ call, the CALL.MMDD file is opened at a predetermined specific time and only HZ telephone conversation information is filtered during the termination/origination of all subscribers to store HZ telephone conversation information according to the subscribers(d). It is checked whether the change subscriber and the number of count are 100(e). Statistics data of a subscriber who has telephone conversation information over 100 times are extracted(e). When the extracted statistics data of the subscriber are reached to 100 times, the statistics data are compared with a conventional HZ list and a new RTDmin and offset about an existent base station is determined(f). When the RTDmin value and the offset value are changed by general call data, a performance program retrieves a gbts_home table, and updates an RTDmin value and an offset value of a base station included in the same HAGB group according to the changed values(g).
Patent KR-20020073669-A (KR)
Title: Luminous sheet having long afterglow and high brihtness properties and preparation methol thereof
Inventor: JUNG DO YEON
IPC: C09K11/80
Filed: 2001-03-15
Abstract: PURPOSE: A luminous sheet and its preparation method are provided, to allow the luminous sheet to show high brightness and long afterglow without the deterioration of other sheet mechanical properties. CONSTITUTION: The luminous sheet comprises a luminous resin layer comprising 3-40 wt% of a luminous light-emitting substance represented by (M0.9996-0.998Eu0.0006-0.002)Al2O4(M0.9996-0.998Eu0.0006-0.002)O·n(Al(1-b-a)BbQa)2O3 and 70-97 wt% of a synthetic resin; and a white film layer. In the formula, M is at least one element selected from the group consisting of Sr, Ca, Mg and Ba; Q is La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, Y, Lu, Mn and Bi; a is 0.0005-0.002; b is 0.001-0.35; and n is an integer of 1-9. Preferably the thickness of the luminous resin layer is 0.1-50 mm, and the thickness of the white film layer is 0.01-20.0 mm.
Patent KR-20020075608-A (KR)
Inventor: JUNG DEOK JU
IPC: G11C11/413
Filed: 2001-03-26
Abstract: PURPOSE: An address input buffer control circuit is provided to execute various operating modes with one mask set by adding a byte selection signal and a fuse option. CONSTITUTION: An upper and a lower byte signal portion(100,200) receive input signals from the outside and output an upper and a lower byte signal. A chip selection signal portion(300) outputs a chip selection signal. A byte selection signal portion(400) outputs a byte selection signal. The first and the second fuse portions(500,600) outputs the first and the second fuse signals. An address enable portion(700) outputs an address control enable signal in response to the byte selection signal and the fuse selection signal. An address control portion(800) outputs an address control signal by an address upper and lower byte signal in response to the chip selection signal and the address control enable signal. A chip drive control portion(900) outputs a chip drive signal in response to the address control signal and the chip selection signal.
Patent KR-20020080565-A (KR)
Title: Molding die for molding semiconductor chip package
Inventor: JANG HWAN YEONG
IPC: H01L21/56
Filed: 2001-04-16
Abstract: PURPOSE: A molding die for a semiconductor chip package is provided to eliminate a deflash process for removing encapsulation resin applied to portions under a lead and a die paddle. CONSTITUTION: The molding die includes an upper molding die(200a) and a lower molding die(200b) which mold the package body(240) of the semiconductor chip package(201). The lower molding die has a bottom surface in which a vacuum absorption hole(260) is formed. The molding die is connected to a vacuum absorption unit(250) for the vacuum absorption hole.
Patent KR-20010069569-A (KR)
Title: Method for inputting reverse-voltage in apparatus creating electrolysed-water
Inventor: KIM SEONG GYU
IPC: C02F1/461
Filed: 2001-04-17
Abstract: PURPOSE: A method for applying reverse voltage to an electrolyzed water manufacturing equipment is provided, which can reduce the changing value of pH load and so extend the life cycle of a polar plate by the reverse voltage applying method and the phase difference of time given to at least two electrolytic cells. CONSTITUTION: The method comprises as follows: (i) a normal step to apply static voltage to a cathode; (ii) a transient step in which the voltage applied to the cathode changes; and (iii) a negative-phase step to apply reverse voltage to the cathode.
Patent KR-20020082933-A (KR)
Title: A method for repairing troubles of computer through the on-line network
Inventor: KIM MIN SEONG
IPC: G06F15/16
Filed: 2001-04-24
Abstract: PURPOSE: A method for recovering a connection trouble of a personal computer on the Internet is provided to solve a user's trouble and reduce a mobilization of manpower by supplying a network setting technique of Windows and an interface for a user and supplying an environment capable of setting or recovering a Windows environment in a remote place for an after service staff. CONSTITUTION: A user's computer is diagnosed(100). If the TCP/IP of the computer is not operated normally, a one-touch clinic is executed(200). Although the TCP/IP of the computer is operated normally, if a connection to the Internet or other plug-in component, etc. is not operated normally, a remote operation permission is executed(300). If a user does not solve a problem on hardware of the computer, a business trip staff is called(400).
Patent KR-20020083297-A (KR)
Title: Apparatus for depositing in semiconductor processing
Inventor: CHOI GYU HWAN
IPC: H01L21/205
Filed: 2001-04-26
Abstract: PURPOSE: A deposition apparatus for manufacturing semiconductor devices is provided to easily couple shower heads and to prevent a scratch in inner walls of a port by using a ceramic shower head having thick thickness. CONSTITUTION: The deposition apparatus comprises a chamber, a susceptor formed at bottom of the chamber for loading a wafer, and a shower head. The shower head further includes an aluminum shower head(24) and a ceramic shower head(28). The aluminum shower head(24) includes a first plurality of cavities(24a), an RF power line(30a) and a plurality of cooling lines(30b,30c). The ceramic shower head(28) further includes a second plurality of cavities(28a) corresponding to the first cavities, an RF port(32a) inserted in the RF power line(30a), and cooling ports(32b,32c) inserted in the cooling lines(30b,30c). A collet(34) is formed in inner walls of the RF port(32a) and the cooling ports(32b,32c).
Patent KR-20010078858-A (KR)
Title: Preparation Method of the Silver Colloids with Nanometer Size Irradiated by Radiation and Its Silver Colloid with Nanometer Size
Inventor: LEE MU SANG
IPC: C01G5/00
Filed: 2001-04-30
Abstract: PURPOSE: A method for producing a nanometer-size silver colloid is provided to massively produce a nanometer-size silver colloid used as a builder for surface enhanced Raman scattering, a conductive adhesive, an ink additive, an electromagnetic wave isolator and antibiotics. CONSTITUTION: A method for producing nanometer-size silver colloid comprises the steps of: melting such a silver salt as AgNO3, AgClO4 or AgClO3 in tertiary distilled water; adding alcohol or an organic solvent as an in-process material remover; adding sodium dodecyl sulfate, polyvinyl alcohol, or pulyvinylpyrrolidone as a colloid stabilizer; and irradiating radioactive rays of a predetermined amount. Accordingly, nanometer-size silver colloid of uniform distribution is produced in large quantities.
Patent KR-20020085585-A (KR)
Title: Apparatus for etching wafer back side
Inventor: JUNG HO PIL
IPC: H01L21/306
Filed: 2001-05-09
Abstract: PURPOSE: An apparatus for etching a back face of a wafer is provided to etch uniformly a surface of a wafer by supplying an etch solution to the back face of the wafer. CONSTITUTION: A cylindrical housing(30) has a tapered lower side(32). An etching dam(40) is mounted on the tapered lower side(32). The etching dam(40) includes three support portions(42) for supporting a wafer. A tapered region has the first side(40a) and the second side. The second side has the same gradient as the tapered lower side(32) of the cylindrical housing(30) for loading the etching dam(40). An etching bath can be formed with the tapered lower side(32) when the etching dam(40) is mounted on the tapered lower side(32). An outer circumference(R1) of the etching dam(40) is smaller than an inner circumference(R2) of the housing(30). An etching apparatus is formed at the lower side(32) of the housing(30). The etching apparatus includes a supply portion(35) for supplying an etch solution to the etching bath. The first and the second exhaust portions(47,37) are formed at a contact portion between the lower side(32) and the etching dam(40) and an end portion of a sidewall of the housing(30).
Patent KR-20010103685-A (KR)
Title: 착색된 기록 물질
IPC: B41M5/52
Filed: 2001-05-09
Abstract: 본 발명은 잉크젯 프린터에 유용한 내수성의 착색된 기록 물질을 개시하고 있다.  잉크 수용층은 알킬실란, 수용성 가소제 및 중합성 잉크 고착체로 개질된 실리카 분산액을 포함한다.  물질은 통상의 유형의 프린터에서 광 특성의 이미지 기록을 제공한다.
Patent KR-20010107591-A (KR)
Title: 전기 및 전자부품용 구리합금
IPC: C22C9/04
Filed: 2001-05-19
Abstract: 높은 강도 및 높은 전기전도도의 구리합금으로서, 이것은 리드프레임, 터미널 및 커넥터와 같은 전기 및 전자부품에서 사용을 위해 구리합금으로서 요구되는 강도, 전기전도도 및 굽힘가공성과 같은 특성이 우수할 뿐만 아니라, 내연화성, 전단가공성, Ag도금특성 및 땜납젖음성에 우수하며, 이 구리합금은 다음을 포함한다: 
     Ni: 0.1 내지 1.0%(여기에서 그리고 이후 질량%를 의미함), Fe: 0.01 내지 0.3%, P: 0.03 내지 0.2%, Zn: 0.01 내지 1.5%, Si: 0.01% 이하; 및 Mg: 0.001% 이하; 여기에서 P함량 및 Si함량사이의 관계는 다음의 관계식을 만족한다: 
     P 함량/Si 함량 ≥ 10, 그리고 
     Ni 함량, Fe 함량 및 P 함량에 대한 관계는 다음의 관계식들을 만족할 수 있다: 
     5 ≤ (Ni 함량 + Fe 함량)/P 함량 ≤ 7 
     4 ≤ Ni 함량/Fe 함량 ≤ 9.
Patent KR-20020088667-A (KR)
Title: Method and apparatus for managing a facility using electronic signal
Inventor: CHOI SEONG WOOK
IPC: G06Q50/10
Filed: 2001-05-19
Abstract: PURPOSE: A method and apparatus is provided to prevent damage or loss of geodetic reference and manage geodetic reference with low cost through the use of inexpensive electronic signal. CONSTITUTION: A facility management method, comprises a first step of recognizing coordinates of an electronic signal in accordance with preset reference coordinates; a second step of checking state of the facility by using one or more sensors, in accordance with the coordinates of the electronic signal; and a third step of transmitting the result of checking to a remote detection system through a communication network and transmitting/receiving devices. An electronic signal(301) includes a solar battery cell(401), a power unit(403), an RF transmitter/receiver module(405), a sensor unit(407), a data processing unit(409) and an antenna unit(411).
Patent KR-20020088960-A (KR)
Title: organic deposition device for OELD panel fabrication
Inventor: JU SEONG HU
IPC: H05B33/10
Filed: 2001-05-22
Abstract: PURPOSE: An organic film deposition apparatus is provided to reduce manufacturing cost by significantly reducing the amount of organic material, while improving yield rate and lengthening lifespan of the apparatus. CONSTITUTION: An organic film deposition apparatus comprises a chamber which maintains a high temperature vacuum atmosphere; a main shutter(11) arranged within the chamber, and which controls deposition thickness of an organic material with respect to a substrate(10); a pot(12) for containing an organic material to be deposited onto the substrate through sublimation; a source shutter(13) arranged above the pot, and which prevents organic material from being formed into a film in the chamber; and a refining shutter(14) interposed between the main shutter and the source shutter, and which refines organic material to be re-utilized when the organic material is prevented from being deposited onto the substrate.
Patent KR-20020089752-A (KR)
Title: Method for manufacturing natural preservative and goods using the preservative
Inventor: KANG SUN CHUL
IPC: A01N63/04
Filed: 2001-05-24
Abstract: PURPOSE: A process of preparing a natural preservative by extracting Caesalpinia sappan L. in spirits is provided. Whereby, the product has an effect on surprisingly improving shelf stability of a food product such as Kimchi, beef consomme. CONSTITUTION: Caesalpinia sappan L. is cut, ground, extracted in spirits as a solvent and then centrifuged at 3,000rpm for 15min. The supernatant is dried and then 0.001 to 5.0% by weight of the Caesalpinia sappan L. extract is added to a food product. The preservative containing the extract has high antimicrobial activity and does not exhibit adverse effects associated with synthetic preservatives.