baber/WOPTO huggingface dataset:
Patent KR-20010037358-A (KR)
Inventor: KIM HYEONG GWON
IPC: C12N1/20
Filed: 1999-10-15
Abstract: PURPOSE: Provided is novel Bacillus stearothermophilus L1 generating lipase which shows the maximum activity at 68 deg.C and hydrolyzes palm oil effectively at room temperature so that the protein is very useful in producing free fatty acids or synthesizing esters and peptides. CONSTITUTION: Bacillus stearothermophilus L1 and lipase produced thereby are obtained by the next steps of: i) selecting and identifying bacteria, which can survive at 55 deg.C and generate lipase able to dissolve olive oil, from soil sample around hot spring; ii) cutting DNA of the bacteria, B. stearothermophilus L1, with restriction enzyme HindIII, ligating DNA segments with plasmid pUC19, and transforming competent E. coli RR1 with the plasmid; iii) spreading the transformant on TCN plate including ampicillin and cultivating the bacteria at 37 deg.C for 24 hours to obtain clear colonies; iv) cultivating the colonies again and selecting 7.2 kb plasmid, pLIP1, having 4.5 kb DNA segment; v) transforming E. coli RR1 with the plasmid to obtain colonies, which show the activity as lipase; vi) cutting pLIP1 with restriction enzymes HindIII and NotI, and ligating the plasmid segments with pBluescript SK; and vii) transforming E. coli RR1 with the plasmid to obtain pLIP2 having 2.7 kb DNA segment.
Patent KR-20000006697-A (KR)
Inventor: CHOI JIN YONG
IPC: G06F17/30
Filed: 1999-10-20
Abstract: PURPOSE: A bulletin board system having a reference document sending function is provided to enable a bulletin board user registering a question in a bulletin board to confirm a reply to the question without connection of a site. CONSTITUTION: The system comprises a bulletin article database for making a database of a bulletin article; a relational database for searching an upper document and making a related list to make a database; a bulletin article processing and relational document sending processor registering the bulletin article in the bulletin article database according to user request and sending the article to the processor; and a processor for sending the registered bulletin article utilizing an electronic mail.
Patent KR-20010039142-A (KR)
Inventor: KO YEONG GWAN
IPC: C08K3/00
Filed: 1999-10-29
Abstract: PURPOSE: A plastic film for packing fruits and vegetables having excellent moisture permeability and mechanical physical properties by adding silicon oxide to synthetic resin is provided, which can maintain the degree of freshness when used for packing fruits, vegetables and meat, and has excellent mechanical physical properties enough for a packing film. CONSTITUTION: This plastic film for packing fruits and vegetables comprises 70 to 90% by weight of synthetic resin, 30 to 10% by weight of diatomaceous earth having a silicon oxide content of more than 50% and a particle size of 500 to 800mesh. The diatomaceous earth is obtained by sintering natural diatomaceous earth at 600 to 800deg.C under oxidation atmosphere for 4 to 10hr and pulverized.
Patent KR-20010039426-A (KR)
Inventor: CHOI MYEONG JAE
IPC: A23L33/00
Filed: 1999-10-30
Abstract: PURPOSE: Provided is a novel dietary fiber for functional beverage containing novel food resources, Psyllium seed husk as a main ingredient which enhances activity of useful bacteria in small intestine and eliminates feces contained in the long intestine efficiently by supplying fiber and fly ash into human intestine. Therefore, it is useful in the field of food processing and healthy food. CONSTITUTION: A preparation method of novel dietary fiber for functional beverage containing Psyllium seed husk as a main ingredient comprises the following steps of: (a) washing Psyllium seeds; (b) grinding them with a grinder; (c) separating Psyllium seed husks with air blower; (d) shattering them into pieces to obtain powder having a particle size of 40-60 mesh ; (e) separating the powder having a particle size of less than 40 mesh; and (f) weighing and packaging them with vibrator.
Patent KR-20010047118-A (KR)
Inventor: CHOI HYO SEUNG
IPC: G11B15/02
Filed: 1999-11-18
Abstract: PURPOSE: A multi-image synchronous reproduction apparatus is provided to supply multi-image simultaneously and earn a timely advantage by reproducing multi-image on one of screen and monitor with one apparatus. CONSTITUTION: A recording media arranges a plurality of image frame by frame alternatively. A reproduction device reproduces a plurality of image which is recorded in the recording media simultaneously and indicates each images with a mixed image. An image selection device recognizes only an appropriate image selectively by opening and closing each images out of the mixed image which is reproduced by the reproduction device making a synchronism with a period of reproduction. An acoustic output device outputs only a sound of image which is selected by the image selection device selectively. The image reproduction apparatus is composed of a projection part(22) to project film which images is recorded by turns on a screen(21), a first and a second liquid crystal shutter glasses(23a,23b) to show images selectively, a first and a second headphone(24a,24b) to hear a sound selectively, a first and a second driving pulse generator(25a,25b) to open and close the liquid crystal shutter, a liquid crystal shutter controller(26) to control the driving pulse generator(25a,25b), and a sound output part(27) to supply a sound to the headphone(24a,24b).
Patent KR-20010048598-A (KR)
Inventor: BAEK SANG HYEON
IPC: B29C55/12
Filed: 1999-11-27
Abstract: PURPOSE: A nylon tubular film and manufacturing process thereof improves a mechanical property, a chemical property and a future workability by improving the early mechanical direction(MD) modulus of a nylon tubular film, thereby improving the value added of a product. CONSTITUTION: A non-stretch sheet is obtained by extruding melting a nylon through a ring-shaped die and cooling the melting nylon quickly. The non-stretch sheet is stretched for magnifying 2.5¯3.5 times to a mechanical direction(MD) and 2.5¯3.5 times to a tangent direction(TD) on the temperature interval between Tg(glass transition temperature) and Tcc(cold crystallization temperature). A tenter stretch rate is 2.5¯7.0 during the interval of a tenter heat treatment. Thus, the early mechanical direction(MD) modulus of a nylon tubular film is improved, thereby improving a mechanical property, a chemical property and a future workability.
Patent KR-20010056920-A (KR)
Inventor: KIM SEONG GWANG
IPC: F02F3/28
Filed: 1999-12-17
Abstract: PURPOSE: A combining structure of a piston and a connecting rod is provided to improve the processibility of a connecting rod and to reduce the weight of a piston assembly by shaping a small end portion of the connecting rod into a plane. CONSTITUTION: A piston(12) lifting up and down in a cylinder block(18) is combined with a small end portion(16) of a connecting rod(14). The small end portion of the connecting rod is formed in the shape of a disk of a specific thickness. An open hole is formed in the piston to make the small end portion fitted into the piston. The open hole is communicated with the lower portion of the piston. As the piston is directly combined with the connecting rod, the weight of a piston assembly including the connecting rod is reduced. The planar shape of the connecting rod makes the determination of a process datum point for processing easy.
Patent KR-20010058213-A (KR)
Inventor: KIM DO YEON
IPC: F24F11/00
Filed: 1999-12-24
Abstract: PURPOSE: A fire warning method of an air conditioner is provided to promptly control a fire by generating a fire warning sound when temperature of intake air is over a specific level and to prevent spreading of the fire by cutting off a set power. CONSTITUTION: A fire warning method comprises the steps of: sensing temperature of air sucked via an intake port; comparing the sensed temperature of the intake air with a temperature predetermined in a control unit; and stopping an air conditioner while outputting a fire warning if the temperature of the intake air is higher than the predetermined level. With output of a warning sound, a fire is controlled promptly. By cutting off a set power, spreading of the fire is prevented.
Patent KR-20010060869-A (KR)
Inventor: KIM GYEONG SU
IPC: H04L12/24
Filed: 1999-12-28
Abstract: PURPOSE: A method for processing an event by the request of an operator in a communication system is provided to allow the communication system to manage event state data, so as to enable simultaneous event detection in a polling mode and an interrupt mode. CONSTITUTION: Event information is received from an operator during system operation, to update an event state table. Events are detected from the event state table in a polling system, for events where a detection system is a polling mode. Events are detected from the event state table in an interrupt system, for events where a detection system is an interrupt mode.
Patent KR-20010061351-A (KR)
Inventor: HAN JIN SU
IPC: H01L27/146
Filed: 1999-12-28
Abstract: PURPOSE: A unit pixel of a complementary metal-oxide-semiconductor(CMOS) image sensor having photodiode connected with a capacitor is provided to accumulate more electrons than a conventional photodiode by increasing the electron accumulation capacity of the photodiode. CONSTITUTION: A photodiode is formed in a semiconductor layer by an ion implantation method, aligned with the edge of an isolation layer. A capacitor is composed of a lower electrode, a dielectric layer and an upper electrode in contact with the photodiode, formed along the interface of the isolation layer and the photodiode on a plane.
Patent KR-20010065339-A (KR)
Inventor: PARK WON GYU
IPC: H01L21/768
Filed: 1999-12-29
Abstract: PURPOSE: A method for forming a metal wire line is provided to improve an electric characteristic. CONSTITUTION: The method for forming a metal wire line forms a lower metal wire line(25) on a semiconductor substrate(20) having a given device structure. An interlayer insulating film(30) is etched to form a contact hole. A rapid adhesive layer(35) is stacked within the contact hole and a metal plug(40) is then buried within the contact hole. A lift-off photoresist film(45) is stacked at a portion where an insulating portion will be formed in a portion where an upper metal wire line(60) will be formed on the resulting surface. A wetting layer(50) and a metal seed layer(55) are stacked on the resulting surface. The upper metal wire line is grown by electro-plating the metal seed layer stacked at a portion except for the lift-off photoresist film. The lift-off photoresist film exposed in the resulting product is removed simultaneously when the wetting layer and the metal seed layer that are stacked on the upper surface are removed. The metal adhesive layer is etched through the opened insulating element(65) while removing the lift-off photoresist film.
Patent KR-20010065399-A (KR)
Inventor: SON HONG
IPC: H01L21/31
Filed: 1999-12-29
Abstract: PURPOSE: A method for forming an interlayer dielectric of a semiconductor device is provided to prevent a bowing phenomenon generated on an interlayer dielectric when forming a contact hole. CONSTITUTION: The first interlayer dielectric(102) is deposited on a semiconductor substrate(100). The second interlayer dielectric(104) is deposited on the first interlayer dielectric(102). A photoresist pattern is formed on the second interlayer dielectric(104). A contact hole is formed by etching the second and first interlayer dielectrics(104,102). A barrier metal layer(108) is formed on an upper portion of the semiconductor substrate(100). A metal line is formed by depositing a metal layer thereon.
Patent KR-20000023839-A (KR)
Inventor: ALDIR WITER
IPC: B65D88/08
Filed: 1999-01-18
Abstract: PURPOSE: A tank for storing a liquid product is provided to improve the working efficiency by removing undesirable materials accumulated in the bottom of a storing tank. CONSTITUTION: When a worker opens a block valve of a drain tube, a undesirable material is drained to the outside of a tank(1). During draining, the undesirable material is guided by a gravity toward a center unit(6) of a bottom unit(5). The undesirable material is drained under a ramp(8) of a drain channel(7) toward a girth of the tank bottom unit, and the undesirable material is removed from the inside of the tank(1) by passing a drain tube therein. When an indicating device of level indicates that the level of sludge descend drops block to predetermined limit, the worker closes the valve.
Patent KR-20000048848-A (KR)
Title: Apparatus and method for testing optical fiber system components
Inventor: BLOOM CARY
IPC: G02B6/38
Filed: 1997-09-12
Abstract: PURPOSE: An apparatus for testing optical fiber system components is provided for test assembly which can test light device completely and accurately. CONSTITUTION: An optical switching assembly selectively connects an optical source and a detector to at least one fiber optic device. The assembly includes first and second groups of optical paths, and first and second optical switches. The first optical switch selectively connects the optical source to one end of the first group of optical paths, and the second optical switch selectively connects the detector to the one end of the second group of optical paths. The assembly also includes a plurality of junctions, each having a lead associated therewith, and one or more of the leads are connected to the fiber optic device. The junctions connect the other end of the first group of optical paths and the other end of the second group of optical paths to the lead to facilitate the testing of the fiber optic device.
Patent KR-20000069704-A (KR)
Title: 다중 안테나를 가지는 통신국
IPC: H04B1/06
Filed: 1998-05-26
Abstract: 본 발명은 통신 시스템을 위한 통신에 관련한다. 통신은 RF 수신기/전송기에 연결되는, 그리고 개개의 CDMA 통신을 처리하기 위한 하나 이상의 모뎀을 포함하는 다른 신호 처리 장치에 연결되는, 안테나 시스템을 포함한다. 선호적으로 안테나 시스템은 다중 안테나와 지연 유닛을 포함하고, 안테나 시스템에 의해 부여되는 공지의 왜곡을 가지는 혼합 신호를 출력한다. 혼합된 신호는 모뎀에 의해 다시 처리된다. 모뎀은 향상된 신호 이득을 제공하는 방식으로 공지의 왜곡을 보상한다. 향상된 신호 이득은 전송 전력에서의 감소를 이끌고, 따라서 CDMA 시스템의 용량을 증가시킨다. 안테나 시스템이 신호 처리 장치로부터 떨어져 있다면, RF 수신기/전송기와 다른 신호 처리 장치를 위한 분리된 유닛이 제공되어, RF 수신기/전송기 역시 안테나 시스템에 따라 떨어져 위치한다. 선호적으로, 20 피이트 이상의 연결 케이블은 다른 신호 처리 장치로부터 RF 수신기/전송기에 DC 전력을 공급하도록 갖춰진다.
Patent KR-20000069890-A (KR)
Title: 스테핑 모터 제어 방법 및 장치
IPC: H02P8/00
Filed: 1998-01-09
Abstract: 본 발명은 중앙처리장치(CPU)가 저장된 정현표(sinusoiD/Al table)로부터 항상 일정한 주사 시간 내에 정현 주기마다 최소 세 개의 선택된 디지털 목표 전류값을 읽어내고 이것을 D/A 변환기 또는 펄스폭 변조기를 써서 이산적 아날로그 목표 전류값으로 변환하는 스테핑 모터의 제어 방법 및 장치에 관한 것이다. 이 값들로부터 저주파 통과 필터를 써서 목표 전류값을 위한 매끈한 정현파 신호가 재구성되고, 이 신호로부터 스테핑 모터의 상을 여자하기 위한 모터 전류가 파생된다. 판독된 정현표의 지점들 간의 간격의 선택에 따라 모터의 상의 길이가 변화되고, 그럼으로써 항상 일정한 주사 주파수로 인해 모터의 회전속도가 설정된다. 본 방법과 장치는 모든 영구 자석 여자식 스테핑 모터, 하이브리드 모터 및 동기 전동기의 제어장치 및 위치 결정장치에 적합하다.
Patent KR-20000071072-A (KR)
Filed: 1997-02-18
Abstract: 본 발명은 1회용 흡수품의 귀 패널을 재생가능하고 일관되게 접어서 사용자의 기저귀 개방 작업을 간단하고 신속하게 하며, 잘린 귀 패널에 의해 야기되는 최종 사용자 및 착용자의 잠재적 부상 위험을 감소시키고, 그리고 포장을 위해 1회용 기저귀 다발의 보다 미관적으로 만족스러운 배열을 형성하는 수단을 제공하는 것에 관한 것이다.  본 발명의 다른 실시예에 있어서, 귀 패널이 접혀있는 1회용 흡수 기저귀의 제조방법이 제공된다.
Patent KR-20000075995-A (KR)
IPC: F16F15/32
Filed: 1998-02-23
Abstract: 본 발명은, 섹터 방식의 구조로 인해 전기 기기 및 베이스의 시스템 고유 주파수를 변동하는데 사용될 수 있는 특히 전기 기기용 베이스 플레이트에 관한 것이다.
Patent KR-20000076032-A (KR)
IPC: A01K63/00
Filed: 1998-05-07
Abstract: 본 발명은 조장용, 어초용, 하상용 등의 수중침설용석재 및 그 제조방법과 조장의 조성방법에 관한 것으로, 철강제조과정에서 발생한 입상슬래그로 이루어지는 혼합물을 준비하는 공정과 해당 혼합물에 탄산화처리를 실시하여 탄산화물을 생성시키고, 생성시킨 탄산화물을 바인더로 하여 해당 혼합물을 괴상화시키는 공정으로 이루어지는 수중침설용석재의 방법과 그 방법에 의해 제조된 수중침설용석재이며, 해당 석재는 해중침설용, 하천침설용과 조장의 조성용으로 사용되는 것을 특징으로 한다.
Patent KR-20010012539-A (KR)
Title: 화학적 증착 전구체
IPC: H01L27/105
Filed: 1998-05-13
Abstract: MOCVD 기술을 사용하여 산화지르코늄 박막 또는 이를 함유하는 박막을 침착시키는데 사용하기 위한 지르코늄 전구체는 다음 화학식을 갖는다. 
     Zr x (OR) y L z   
     상기식에서, 
     R은 알킬 그룹이고, 
     L은 β-디케토네이트 그룹이고, 
     x는 1 또는 2이고, 
     y는 2, 4 또는 6이며, 
     z는 1 또는 2이다.
Patent KR-20010013499-A (KR)
Title: 다국 네트워크의 동작방법
IPC: H04B7/15
Filed: 1998-06-05
Abstract: 본 발명은 통신네트워크의 동작방법을 제공한다.  네트워크는 다수의 국으로 구성되고, 각 국은 중계국을 매개로 시점국으로부터 목적국으로 기회적으로 메시지를 전송하기 위해서, 데이터를 송신 및 수신할 수 있다.  각 국은 다수의 가능한 호출채널 중 하나를 선택하여 프로브신호를 다른 국으로 전송시킨다. 프로브신호는 해당 국을 확인하는 데이터를 포함하고, 다른 국에 대한 그 연결성의 항목을 포함한다.  프로브신호를 수신하는 다른 국은 직접 또는 간접적으로 응답하여, 프로빙국 및 다른 국 모두에 목적 또는 중계국으로서의 그들이 이용성을 나타내게 한다.  프로빙국은 직접 또는 간접 응답을 평가하여 최적으로 통신할 수 있는 다른 국을 확인한다.  예컨대, 국은 다른 국에 도착하는데 요구되는 누적전력을 감시할 수 있어, 전력 그레디언트를 최적화하는 네트워크를 통한 루트를 선택하는 국으로 다른 국에 대한 전력 그레디언트를 정의할 수 있다.  따라서, 국들 사이의 간섭 및 컨텐션을 최소화함으로써, 네트워크를 통한 데이터 처리량이 최소로 된다.
Patent KR-20000018004-A (KR)
Inventor: LEE HAN SEUNG
IPC: B42D1/00
Filed: 2000-01-03
Abstract: PURPOSE: A magnet adhered book is provided to be attached to the side surface of a metallic furniture such as a refrigerator or a cabinet without an extra fixing device by adhering a magnet on the bookbinding area of a rear cover. CONSTITUTION: A magnet adhered book can be supplied as a complete product as a book or a note pad containing a cover(1) having a rear surface bookbinding unit(3) being attached by a magnet. The magnet including a two-sided tape can be supplied with a book and a description by being wrapped together for a user to attach the magnet on the bookbinding unit of the book. Therefore, the magnet adhered book can be attached to the side surface of metallic furniture such as a refrigerator or a cabinet for being easily noticed without leaving a trace after being removed.
Patent KR-20010073726-A (KR)
Title: Preparation for the architectural matenials using Sludges of Waste Water
Inventor: JANG SANG MU
IPC: C02F1/00
Filed: 2000-01-20
Abstract: PURPOSE: A manufacturing method of construction materials using fluoric acid- contained wastewater sludge is provided which reduces manufacturing costs and environmental pollution. The construction materials are excellent in absorbency, shrinkage and compression strength, and enables low temperature sintering without drying. CONSTITUTION: The method comprises the steps of: sintering sludge of fluoric acid wastewater at 800-950deg.C; grinding to 40mesh in particle size; adding 10-30wt.% of a stabilizer such as feldspar, white earth, fly ash, SiO2, MgO and Al2O3 and 10-30wt.% of sludge, being not sintered, as a binder; adding a pigment which is at least one metallic salt selected from the salts of Mn, Zn, Ni, Co, Ba and Sr, and 80-200pts.wt.(based on 100pts.wt. of pigment) of waste ferrite core powder.
Patent KR-20010076076-A (KR)
Title: A method for controlling the printer of a kiosk
Inventor: HA SANG JIN
IPC: B41J29/00
Filed: 2000-01-25
Abstract: PURPOSE: A printer control method of a kiosk is provided to prevent collision of a printer state check command and a print performance command at waiting for plural printer files in a kiosk. CONSTITUTION: A printer state check control unit(12) checks a state of a printer, and stops in receiving a print start signal from an output process control unit(11). The output process control unit inputs a print performance signal from the print state check control unit, calculates the number of printing files, and finishes printing a first file. The printer state check control unit checks the number of printing files from the output process control unit in transmitting a print end signal including the calculated file number to the printer state check control unit, and checks the end of printer spooling as the number of the checked file. The collision between the print state check command and the print performance command is prevented with restarting checking the print state.
Patent KR-20010076106-A (KR)
Title: Storage box for car cover
Inventor: CWON HYUN OAK
IPC: B60J11/00
Filed: 2000-01-25
Abstract: PURPOSE: A car cover accommodating box is provided to take out a cover without opening or closing a car trunk and so on and to easily apply the cover on a car body. CONSTITUTION: A car cover accommodating box(4) with a lid(2), a hinge(3) and a locking device is installed inside a car body on, under or beside a front and rear bumpers of a car. A winding device(5) is installed inside the accommodating box(4) to be operated by power to wind a cover. A prevention step(8) is formed on the opposite side of the hinge to prevent water or dust from flowing in. A hooking ring(7) is installed inside the accommodating box to tighten the wound cover not to be loose and for a string fixing the cover to be hooked.
Patent KR-20010081145-A (KR)
Title: A novel microorganism Rhodococcus pyridinovorans PDB9 degrading aromatic compounds
Inventor: CHO YEONG GYUN
IPC: C12N1/20
Filed: 2000-01-26
Abstract: PURPOSE: A novel microorganism, Rhodococcus pyridinovorans PDB9, decomposing aromatic compounds is provided, thereby the polluted environments can be effectively purified without causing second pollution. CONSTITUTION: The novel microorganism, Rhodococcus pyridinovorans PDB9 (KCTC 0647BP), having the base sequence of 16S rRNA represented by SEQ ID NO: 1 decomposes aromatic compounds comprising pyridine, 2-ethylpyridine, 2-methylpyridine, 2,4-dimethylpyridine, 2,4,6-trimethylpyridine, phenol, aniline, benzene, o-chloroaniline, o-cresol, cyclohexanol, 3,4-dihydroxybenzoic acid, 2-nitrobenzoic acid, quinoline, and 4-quinoline. The aromatic compounds are decomposed by incubating Rhodococcus pyridinovorans PDB9 (KCTC 0647BP) at 30 to 37 deg. C and pH 7.5 to 8.5.
Patent KR-20000076738-A (KR)
Title: 심층 자외선 노출용 개선된 건식 사진평판 공정법 처리방법
IPC: H01L21/027
Filed: 2000-02-25
Abstract: 규소 원자가 두 개 이상의 탄소 원자와 한 개 이상의 수소 원자에 결합되어 있는 유기실란 전구체가 고해상도를 갖춘 형상의 형성에 이용 가능한 높은 대비 및 양호한 에지 형상을 갖춘 심층 자외선 광저항 층을 형성한다.  광저항 층의 대비는 발달 플라즈마 내의 산소 함량에 따라서 선택될 수 있다.  플라즈마-중합 유기실란 층은 제조 환경 내에서의 웨이퍼의 통상적인 사진석판 공정과 일치하는 시간 동안의 사진석판술 노출 전후 양자에서 공기 중에 안정하다.
Patent KR-20010084787-A (KR)
Title: Square-groove optical fiber block and manufacturing method thereof
Inventor: LEE SANG SIN
IPC: G02B6/00
Filed: 2000-02-29
Abstract: PURPOSE: A square groove optical block and fabricating method thereof is provided to increase productivity and reliability by reducing a process time and preventing a displacement of an optical fiber by means of a square groove. CONSTITUTION: A photosensitive glass substrate(1) is formed to a square groove by separating each other with predetermined distance. An optical fiber(2) is located in the square groove. A glass or silicon cover(3) locates on the upper side of the optical fiber(2) and the photosensitive glass substrate(1). An epoxy(4) fixes the optical fiber and the cover(3) to the photosensitive glass substrate(1). On the both upper side and lower side of the photosensitive glass substrate(1) is formed to the square groove. The optical fiber(2) is inserted in the square groove. A pattern mask is located on the upper part of the photosensitive glass substrate(1). The square groove optical fiber block selectively checks an ultraviolet ray at the region of the photosensitive glass substrate(1) and performs thermo process on high temperature. A deposition process deposits a selected one of a photoresist, polymer, or metal on the opposite surface checked the ultraviolet ray of the photosensitive glass substrate(1) and selectively etches the region checked the ultraviolet ray by soaking the photosensitive glass substrate(1) in the thin hydrofluoric acid solution and forms a square groove.
Patent KR-20010086581-A (KR)
Title: Nonwoven fabric for gas filters
Inventor: JUNG JIN JU
IPC: B01D39/08
Filed: 2000-03-06
Abstract: PURPOSE: A non-woven fabric for filtration of gas is provided, which can be easily bent-up by using only non-woven fabric without using plastic net or metal net so that can save production cost and solve the problems of increasing resistance of filter caused by plugging of non-woven fabric where plastic net or metal net contact with the fabric. CONSTITUTION: The non woven fabric is produced by at least 70-0 wt.% of a raw material that is selected from a group consists of chemical resin film slitting fiber, fiber charged with static electricity, polyester fiber, polypropylene fiber, nylon fiber and acrylic fiber.