baber/WOPTO huggingface dataset:
Patent KR-20010100569-A (KR)
Inventor: CHO JIN GU
Filed: 2000-05-03
Abstract: 본 발명은 광을 조사하여 광경화성수지를 경화시킴으로써 3차원 모델을 제작하는 광조형법 및 그 장치에 관한 것이다. 
     본 발명에 의하면, 사용되는 광경화성수지는 거의 무색을 띄는 광경화성수지 및 유색의 광경화성수지를 이용한다.  특히, 특정한 색상의 안료를 첨가하여 얻을 수 있는 유색의 광경화성수지를 이용함으로써 색상이 첨가되어 있는 모델을 얻을 수 있다.  그리고 이러한 광조형법을 위해서는, 기존의 광조형장치에 더하여, 유색의 광경화성수지를 별도로 공급할 수 있는 장치를 필요로 하고, 조형시 비경화수지를 흡입하여 제거할 수 있는 노즐을 이용한 흡입장치를 필요로 하게 된다.  이러한 본 발명에 의하면, 완성된 제품 자체가 다양한 색상을 가질 수 있기 때문에, 별도로 추가적인 착색과정을 필요로 하지 않는 장점을 가진다.
Patent KR-20010007074-A (KR)
Inventor: YAMAGUCHI SACHIHIRO
IPC: G06F3/0483
Filed: 2000-05-13
Abstract: PURPOSE: Disclosed is information processor and information processing method by which required processing is executed by simple operation using a jog dial though a conventional operating system repeats complicated operation until a required application program is selected and started by a user on a task bar provided with a start menu button and to obtain a medium. CONSTITUTION: A jog dial correspondence type application declares that the application itself is a jog dial correspondence type to a jog dial monitoring program(54C). Therefore, the program(54C) adds the application software to a list of jog dial correspondence software. Then the program(54C) switches the display of the jog dial menu to a display inherent in the application itself and informs a user of the application as a jog dial guide. The jog dial correspondence application informs the program(54C) of the explanation of jog dial operation in a current state by character strings.
Patent KR-20010105942-A (KR)
Title: Manufacturing method of reactor coil
Inventor: OH BUM KEUN
IPC: H01F29/00
Filed: 2000-05-19
Abstract: Catalyst system for high yield synthesis of polyolefins and process for the polymerization of an olefin monomer, or of an olefin monomer and one or more comonomers, to produce a polymer, the process carried out in a polymerization reactor in the presence of a supported olefin polymerization catalyst system produced from catalyst components comprising: 1) a support material component comprising one or more dehydrated support materials; 2) a metallocene complex component comprising one or more metallocene complexes used in a total loading range of from about 0.1 to about 25 mumol of metallocene complex/gram of support material component; 3) an activator component comprising one or more activators used in a range of molar ratios of total moles of activator to total moles of metallocene complex of from about 0.5 to about 2.5; where the catalyst system is used at a catalyst concentration in the range of from about 0.01 to about 6 moles of active catalyst/mole of monomer, and a catalyst efficiency results that is at least 2.4 x 10 7 g polymer/g mol catalyst/hour.
Patent KR-20010066798-A (KR)
Inventor: MIYABE SHIGEO
IPC: G03G15/08
Filed: 2000-05-20
Abstract: PURPOSE: A process cartridge is provided to eliminate the load imposed on a photoconductive drum by the gravity of a toner in a large-capacity process cartridge and to obtain a stable image. CONSTITUTION: A process cartridge(15) consists of a developing roller(18) for developing an electrostatic latent image formed on a photoconductive drum(11); a toner-receiving frame(16) having a toner-receiving unit for receiving a toner used by the developing roller to develop the electrostatic latent image; a drum frame supporting the photoconductive drum; a developing frame(17) connected to the toner-receiving frame rotatably to support the developing roller; a first end cover connected to the drum frame and the developing frame from each end of the frames; and a second end cover(20) connected tot he drum frame and the developing frame from the other ends. The process cartridge obtains a stable image even though the receiving capacity of a toner increases.
Patent KR-20010049405-A (KR)
Inventor: EGGELING LOTHAR
IPC: C12P13/08
Filed: 2000-05-25
Abstract: PURPOSE: Provided is a fermentative production process of L-amino acids by culturing a Coryneform bacterium that overexpresses the accBC gene including biotin-carboxyl carrier protein region of a nucleotide sequence coding for acetyl-CoA carboxylase, and biotin-carboxylase region. CONSTITUTION: The fermentative production process is characteristically manufactures L-amino acids by using Corynebacterium glutamicum (DSM 12786) transformed with a vector pZ1accBC1C. The Corynebacterium bacterium overexpresses the accBC gene and simultaneously dapA gene. The method comprises the steps of: fermenting a Corynebacterium which amplifies the accBC gene and produces L-amino acid; enriching L-amino acid in a medium or a bacterial cell; and separating the produced L-amino acid.
Patent KR-20010107209-A (KR)
Inventor: MOON HYUN TAE
Filed: 2000-05-23
Abstract: 본 발명은 추천인제도을 하는 인터넷 홈페이지 회사가 회원 모집을 할 때 회원추천금을 주는 것을 이용한 영업방법 발명입니다. 
     본 발명은 어떤 홈페이지가 회원모집을 위하여 회원 추천인에게 회원추천금등을 지급하고 있으나 대부분의 회원을 모집하는 회사는 평균 가입금1,000원, 추천인에게500원정도 추천금을 지급하고 있으므로 그 금액이 회사마다 만원에서 오만원이 되어야 가입한 회원이 지불하므로 대부분의 네티즌들은 가입만 하고 가입한 한 회사로부터 그 추천금등을 받지 못하고 있으므로 그 금액을 받기 위한 영업방법입니다. 
     위와 같은 영업방법을 하기 위하여 출원인의 홈페이지에 회원가입을 할 때 출원인의 홈페이지을 소개한 추천인을 기재하게 하고 그 가입한 회원과 추천 받은 회원을 다단계로 구성하여 수당을 지급한다는 약관에 동의해야 출원인의 홈페이지에 회원가입이 되도록 합니다.. 
     그리하여 가입한 회원이 출원인의 홈페이지에서 추천금을 주는 홈페이지의 목록을 보면서 회원이 원하는 홈페이지에 회원가입 할 때 추천인 란에 출원인이 요구하는 추천인을 적게 하므로 특정인을 집중적으로 추천하는 것입니다. 
     그리하여 회원이 추천했다는 표시을 출원인의 홈페이지에 표시를 하면 출원인은 그 추천금등을 주는 홈페이지의 추천금적립현황의 게시판에서 그 회원이 출원인이 요구한 특정인, 또는 출원인을 추천했다는 사실을 한달 단위로 확인합니다. 
     그리하여 추천인 제도를 하는 회사로부터 지급 받은 추천금, 시상금, 경품 등을 현금화하여 출원인의 영업방법으로 가입한 회원에게 위금액을 출원인의 배당 규정에 의하여 다단계로 회원에게 나누어주는 것입니다. 
     그리고 그 배당 내역과 그 회원의 다단계로 구성된 회원숫자의 다단계표을 출원인의 홈페이지 게시판과 회원에게 메일로 통지하는 것입니다. 
     위와 같은방법으로 일반네티즌이 회원 가입을 하면 분산되는 금액이 집중되므로 실직적으로 추천금등을 가입한 회원이 나누어 가져갈 수 있고 그 금액이 다단계로 지급되므로 계속적으로 회원가입을 할 것입니다. 
     그리하여 기존 추천인제도에 의하여 어떤 홈페이지에 회원가입후 몇 번 회원을 추천 해보지만 평균 50명 이상해야 회사가 규정한 적립금이 되므로 중간에 포기하는 경우가 대부분입니다. 
     결론적으로 회사입장에서는 회원모집이 더 어려운 것이 현실입니다. 
     위의 출원인의 영업 방법은 추천금제도가 있는 회사의 추천금이라도 다단계로 나누어 가지므로 기존의 방법보다 추천금을 주는 회사나 회원 가입하는 회원 양쪽 모두 그 효과가 있다는 것입니다.
Patent KR-20010109707-A (KR)
Inventor: LEE KANG JOO
Filed: 2000-06-02
Abstract: 본 발명은, 수신되는 신호를 무선으로 중계하는  시스템에서, 기지국과 단말기간 또는 기지국과 기지국간의 무선신호를 무변파 방식으로 중계하는 중계장치에 관한 것으로서, 수신되는 신호에, 그 수신신호와 동일 방식으로 대역확산된 신호성분을 의도적으로 생성하여 합성시킴으로써, 신호를 송수신하는 양 안테나간에 궤환되는 신호성분의 위상을 교란시켜 수신신호와 궤환신호가 동상이 되는 확율을 제거하고, 극히 짧은 시간 동상이 된 경우에도 그 위상을 순간 교란시킴으로써 신호궤환에 의한 발진조건을 원천적으로 제거시켜, 신호궤환에 의한  신호의 발진이 발생하지 않게 한다. 이로써 송수신 안테나간의 절연을 위한 장애물울 설치하거나, 전후방(F/B)비가 높은 안테나를 사용하거나, 또는 신호중계를 위한 별도의 주파수 대역을 할당받아 이용하지 않고서도, 발진신호를 억제하면서 수신신호를 중계하여 송신할 수 있으므로, 장소에 구애받지 않고 신호 중계가 필요한 곳에 자유롭게 설치할 수 있고 또한 주파수 자원을 효과적으로 이용할 수 있게 한다.
Patent KR-20000058489-A (KR)
Title: Fabrication of polymer electrolyte membrane for fuel cells through micro-phase separated block copolymers
Inventor: CHO GYOU JIN
IPC: H01M8/10
Filed: 2000-05-17
Abstract: PURPOSE: A method of fabricating a polymer electrolyte is provided to enhance proton conductivity and reduce influence of moisture content to the proton conductivity by fabricating a nano-tube shaped proton conduction path using fine phase separation of a block polymer. CONSTITUTION: A block polymer is fabricated by anion living polymerization to have suitably controlled fine phases. A polymer having high proton conductivity is fabricated by adding a substance which can be ionized to a hydrophilic phase of a block polymer suitably controlled in a nano-tube structure to closely compact proton clusters in hydrophilic phase parts of the fine phases, thereby to obtain the shortest passage required for movement of the proton clusters. This polymer electrolyte is used for a polymer electrolyte fuel cell so that a moisture supply is not required and high efficiency can be expected from high proton conductivity.
Patent KR-20010066829-A (KR)
Inventor: FUKAZAWA NOBORU
IPC: A44C7/00
Filed: 2000-06-09
Abstract: PURPOSE: To provide an earring also usable as a pierced earring which can be comfortably worn. CONSTITUTION: An ear abutment part 1 to be abutted to a surface 9 of an ear is provided at an upper part of a decoration part 7, a joint part 6 is rotatably provided having upward resiliency to be resiliently applied to a corresponding position to the ear abutment part 1, the upper side of the ear abutment part 1 is formed flat, the lower side of it is formed to be gradually curved in the opposite direction to the abutment side to the ear, an opening part 5 is provided at least in a part of a range of curvature, a piercing pin 3 is rotatably installed on a back part of the opening part 5, the pin 3 can be inserted into the joint part 6 rotated upward, and the pin 3 is designed to be roughly perpendicular to the ear abutment part 1 from the ear surface direction to the back direction when it gets in contact with an upper part of the opening part 5, thereby an earring also usable as a pierced earring which can be favorably worn can be provided.
Patent KR-20010113198-A (KR)
Inventor: KIM YEONG MIN
IPC: H04L12/14
Filed: 2000-06-16
Abstract: 1. 청구범위에 기재된 발명이 속한 기술분야 
     본 발명은 대용량 통신처리 시스템과 정보제공자 서버간의 프레임 릴레이망 기반 통신 방법에 관한 것임. 
     2. 발명이 해결하려고 하는 기술적 과제 
     본 발명은 프레임 릴레이 정보제공자 프로토콜(Frame Relay IP Protocol)을 이용하여 대용량 통신처리 시스템과 정보제공자 서버간의 통신을 지원하기 위한 프레임 릴레이망 기반의 통신 방법을 제공하는데 그 목적이 있음. 
     3. 발명의 해결방법의 요지 
     본 발명은, 정보이용자가 상기 대용량 통신처리 시스템에 접속함에 따라 상기 대용량 통시처리 시스템이 프레임 릴레이(Frame Relay) 망 기반으로 상기 정보제공자 서버에 서비스 접속하는 제 1 단계; 상기 서비스 접속이 이루어짐에 따라 상기 정보제공자 서버가 서비스의 시작을 알리고 상기 정보이용자의 접속을 처리하여 상품을 선택하도록 하는 제 2 단계; 상기 정보이용자가 선택한 서비스 상품이 상기 대용량 통신처리 시스템에 등록된 상품인지를 확인하는 제 3 단계; 상기 정보이용자가 선택한 서비스 상품이 정보이용자의 부가정보가 필요한 서비스 상품인지를 확인하여 정보이용자 정보를 전달받는 제 4 단계; 상기 정보이용자가 선택한 서비스 상품의 시작을 알리고 서비스 상품을 실행한 후에 서비스 상품의 완료를 알리는 제 5 단계; 및 상기 정보이용자가 선택한 서비스 상품의 이용 시간 내역을 상기대용량 통신처리 시스템으로부터 전달받는 제 6 단계를 포함한다. 
     4. 발명의 중요한 용도 
     본 발명은 프레임 릴레이 기반의 통신시스템 등에 이용됨.
Patent KR-20000054783-A (KR)
Inventor: KIM WON JUN
IPC: G06Q50/10
Filed: 2000-06-23
Abstract: PURPOSE: A method for displaying records in online games and a configuration of a record display service system are provided so that a user can estimate his level for a game objectively and enjoy the game according to the level by selecting an opponent based on his relative record to other opponents. CONSTITUTION: Prior to a game, member confirmation for a user is made(S100). The user registers as a member with member subscription application(S200). Private information and record information for a plurality of users against the user are extracted and displayed(S300). The user selects a desired opponent, based on the extracted information and record for other users(S400), and plays a game in agreement with the opponent for their confrontation(S500,S600). A result of confrontation is registered in each individual database(S700).
Patent KR-20000054827-A (KR)
Inventor: KIM JIN KOOK
Filed: 2000-06-27
Abstract: PURPOSE: An automatic lottery system on the internet is provided to induce users' interests by previously opening raffling methods to the users to supply information on raffling processes, winning possibilities and conditions, and to automatically inform the users of winning numbers to make the users easily verify fairness for winning procedures and winning results, by simultaneously deciding a winning number at a closing time. CONSTITUTION: An automatic lottery system capable of being verified comprises many clients(11-1,11-2-11-n), a lottery server(13), and a computer network(12). The clients register identification(ID) information according to members. The lottery server previously opens raffling methods to the public, and supplies a winning number decided according to the raffling methods in real time. The computer network makes the clients access the lottery server. The automatic lottery system further comprises many web sites(14-1,14-2-14-n). The web sites connect to the lottery server, and insert advertisements to participate in lottery processes.
Patent KR-20020003941-A (KR)
Title: Novel derivatives of decursin and synthetic method thereof
Inventor: AHN GYEONG SEOP
IPC: C07D493/04
Filed: 2000-06-27
Abstract: PURPOSE: Provided is decursin and its synthesis method, which decursin is synthesized in high yields by reacting decursinol with acid chloride, and has improved anticancer activity and specificity to cancer cells. CONSTITUTION: The synthesis method is characterized by comprising the steps of: adding acid chloride to decursinol then reacting them at 30-40 deg.C for 30-50 minutes; washing resultant compound with HCl solution or NaHCO 3 solution; dehydrating it with magnesium sulfate anhydrous then vacuum concentrating it; and performing silicagel column chromatography therewith. Where, the acid chloride can be selected from benzoyl chloride, pivaloyl chloride, crotonyl chloride, cynamoyl chloride, isovaleryl chloride, acetyl chloride, phenylacetyl chloride, and chloroacetyl chloride.
Patent KR-20010049681-A (KR)
Inventor: HASHIMOTO KINZO
IPC: B65H54/34
Filed: 2000-06-30
Abstract: PURPOSE: To form a bunch winding by transferring the yarn from a full bobbin to an empty bobbin without damaging the yarn by moving the yarn between a contact roller and the empty bobbin to a bunch winding position outside of a winding width of the empty bobbin in a state of the contact roller and the empty bobbin separated from each another. CONSTITUTION: In the winding operation by a yarn winder 1, the yarn Y is traversed by the stroke of a traverse guide 12, and a winding package P is formed on an empty bobbin B on a winding position. When the yarn is fully wound on the bobbin, a turret is anticlockwisely rotated to switch the empty bobbin B and a full bobbin Bf respectively to yarn switching positions K1, K2. Then a yarn guide for holding a yarn layer is revolved to press the yarn Ya between the bobbins B, Bf, then a bunch winding guide 9 is introduced between a contact roller 6 and the empty bobbin B to control the yarn Yb by moving the same to the bunch winding position of the empty bobbin B. Then the yarn (a) is wound up onto the empty bobbin B by further revolving the yarn guide 8.
Patent KR-20020006130-A (KR)
Title: Arrangement method for a pitch of tire
Inventor: LEE SANG JU
IPC: B60C11/03
Filed: 2000-07-11
Abstract: PURPOSE: A pitch arranging method of a tire is provided to reduce noise and vibration efficiently during traveling by deciding the pitch arrangement of the tire with a computer, and to manufacture the tire according to the exciting force from the pitch arrangement and the road surface. CONSTITUTION: A Fourier transform reference value, exciting force from a road surface, the number of pitch, the kind of pitch are input. The width of each pitch is set, and the pitch arrangement is set. Exciting force is calculated with according to the set pitch arrangement. The exciting force from the pitch arrangement is added to the exciting force from the road surface. Combined exciting force is Fourier transformed. The pitch arrangement is set in not satisfying the reference value with the Fourier transform value, and the pitch arrangement, the Fourier transform value and the exciting force from the pitch arrangement are output in satisfying the reference value with the Fourier transform value. Noise and vibration are reduced during traveling, and the reliability and the quality of the tire are improved with arranging the pitch of the tire according to exciting force.
Patent KR-20010015399-A (KR)
Title: Process for producing solid image pickup device and solid image pickup device
Inventor: ABE HIDEJI
IPC: H04N5/372
Filed: 2000-07-21
Abstract: PURPOSE: To obtain a method for manufacturing a solid-state image pickup element and a solid-state image pickup element which can spread a photoelectric transfer region by forming an overflow barrier layer at a deep position, and also prevents generation of radioactive rays caused by using a resist as a mask. CONSTITUTION: When manufacturing a solid-state image pickup element having a vertical type overflow drain structure, ions are implanted on the entire surface of a silicon substrate 1 without using a resist mask to form an overflow barrier layer 11. Furthermore, a pixel region is enclosed in the peripheral part of the silicon substrate 1, and a trench 21 is formed so as to separate the overflow barrier layer 11 into the pixel region and its outer peripheral part, and a conductive type impurity diffused layer 22 different from the overflow barrier layer 11 may be formed in the inner wall part of the trench 21.
Patent KR-20020017027-A (KR)
Title: Device for connect earth terminal of fbt
Inventor: CHO DONG HWAN
IPC: H01F38/42
Filed: 2000-08-28
Abstract: PURPOSE: A ground terminal connecting apparatus of an FBT(fly back transformer) is provided to readily fix a ground terminal and ensure desired insulating distance from a high voltage output terminal pin in connecting the ground terminal to a high voltage bobbin of the FBT. CONSTITUTION: A ground terminal connecting apparatus of an FBT comprises a ground terminal part(110) and a terminal connecting groove(112). A high voltage bobbin(100) of the FBT is allocated upward on the ground terminal part(110). The terminal connecting groove(112) includes an open part inside the ground terminal part(110). A recess is formed at one inner end of the terminal connecting groove(112). The ground terminal part(110) is coupled to a terminal supporter(130) that is formed as an incline away from a pin terminal(120) for accepting a terminal pine(121). A ground terminal(140) is inserted into the terminal connecting groove(112) and includes a connecting piece.
Patent KR-20020024599-A (KR)
Title: Delectric filter
Inventor: JUNG U CHEOL
IPC: H01P1/20
Filed: 2000-09-26
Abstract: PURPOSE: A dielectric filter is provided to serially connect a plurality of resonators having different impedances by forming a resonator hole serving as a band pass filter into a step shape and differently forming the diameters and lengths of resonators mounted within respective holes at the same time. CONSTITUTION: Conductive material is applied to remaining external surfaces of a block(D21) except of an opened side(11) of the block, thereby forming an external conductor on the block(D21). A plurality of through holes have the opened side(11) as their entrances and exit at the rear side(12) corresponding to the opened side. Conductive material is applied to the external surfaces of the through holes, which have different diameters of a step shape for adjustment of impedance, thereby forming first/second resonators(R21,R22). I/O electrode parts(P21,P22) are formed on a top surface(13) of the dielectric block(D21) and both sides(14,15) of the top surface, and act the I/O functions of signals.
Patent KR-20020024931-A (KR)
Title: System for developing electric rice cooker
Inventor: CHA JAE DEOK
IPC: A47J27/00
Filed: 2000-09-27
Abstract: PURPOSE: A development system of a rice cooker is provided to perform easily a development of the rice cooker by testing a pressure condition adequate to an induction heating rice cooker and by performing a various test for a short time. CONSTITUTION: A development system of a rice cooker comprises a plurality of an installing set(10) for placing at least two of the rice cooker to be tested. A sensor(11) is connected to the installing set to read in an inner state of the rice cooker. A multiplexer(20) is connected to the sensor to simplify as a signal by adding an input signal read from the sensor. A control board(30) performs a control works for converting the inputted signals into digital signals. A computer section(40) performs a command by processing information transferred from the control board for monitoring the rice cooker. A latch(50) stores the command signals transferred from the control board and transfers to each installing set. A driver(13) controls a temperature and a pressure based on the output signals of the latch.
Patent KR-20020028123-A (KR)
Title: Air-cavity type package and method of manufacturing the same
Inventor: PARK CHAN IK
IPC: H01L23/48
Filed: 2000-10-07
Abstract: PURPOSE: An air-cavity package is provided to improve work efficiency, by simply using a thermal plate to maintain airtightness of the air-cavity package without using an expensive alignment apparatus. CONSTITUTION: A package base includes a lead unit for an electrical connection to the exterior. A chip(520) is electrically connected to the lead unit of the package base, bonded to the upper surface of the package base. A lid(410) is closely attached to the upper surface of the package base to form an air-cavity between the package base and the lid, having a lid wall to install the chip in the air-cavity. A sealing material seals the lid and the package base along the outer circumference of the lid.
Patent KR-20010051027-A (KR)
Inventor: BRAJAL AMERICO
IPC: H04L7/033
Filed: 2000-10-13
Abstract: PURPOSE: A method for correcting frequency at receiving terminal for packet transmission system is provided to limit the calculation frequency in consideration of the terminal performance when a data packet having a large frequency shift is received. CONSTITUTION: A commercial terminal is provided with a local oscillator which is not so highly accurate and uses a carrier having a comparatively large frequency error about the logical reference value. A receiver terminal improves the receiving signal having such frequency shift. Thereby a function Z(Δf) is calculated to the least number of points and accordingly the maximum value of a discrete error function Z(Δf) can be fastly obtained with a prescribed accuracy. Then a frequency error Δf is estimated.
Patent KR-20010051107-A (KR)
Inventor: IMAOKA TOSHIO
IPC: B28D1/04
Filed: 2000-10-18
Abstract: PURPOSE: A direct motor is provided to shorten an executing work by easily and quickly performing a drilling, while suppressing noise. CONSTITUTION: In a direct motor(1) having a cylindrical rotor with an inserted and fixed rotary shaft(3) provided with a bit at a tip part and a cylindrical stator provided at an outer periphery of the rotor, the center of the rotary shaft(3) is positioned at a prescribed drilling position. The positioning can be performed in a state that the direct motor(1) is energized and rotated. By energizing the direct motor(1), rotating the rotary shaft(3) at high speed, rotating the bit at high speed and abutting the bit on concrete(C), a hole(H) is formed.
Patent KR-20020031859-A (KR)
Title: Microorganism having improved ice nucleating activity and method for preparing thereof
Inventor: HONG SEUNG SEO
IPC: C12N15/09
Filed: 2000-10-24
Abstract: PURPOSE: A microorganism having improved ice-nucleation activity and a process for preparing the same microorganism are provided, therefore the ice-nucleation protein gene can be stably present in a chromosome of the microorganism, so that the ice-nucleation activity of microorganism can be improved. CONSTITUTION: The process for preparing the microorganism having improved ice-nucleation activity comprises the steps of: separating a gene encoding an ice-nucleation protein from the cell; preparing a vector comprising a homologous DNA with a target DNA in a chromosome of a host microorganism and the ice-nucleation protein gene; transforming the host microorganism with the vector; and selecting a transformant, in which the microorganism having improved ice-nucleation activity is Xanthomonas campestris SYG 23 and the host microorganism is selected from Pseudomonas syringae, Pseudomonas fluorescence, Erwinia herbicola, and Xanthomonas campestris.