baber/WOPTO huggingface dataset:
Patent KR-20010091168-A (KR)
Title: Apparatus and method for controlling subscribers by using functional modeling of subscriber server in integrated internet protocol network
Inventor: JUN HAN GU
IPC: H04L12/24
Filed: 2000-03-13
Abstract: PURPOSE: An apparatus for managing a common subscriber through a functional modeling of a common subscriber server in an ALL-IP network and a method therefor are provided to unifiedly manage a mobility management function, a call association service management function, a QoS(Quality of Service) management function, an authentication and authorization function, and an accounting function using a common subscriber database. CONSTITUTION: An MS(Mobile Station)(21) satisfies a media standard supported in an ALL-IP network. A RAN(Radio Access Network)(22) controls and manages a radio resource and a traffic on radio of the MS(21), controls and manages a hand-off, transmits and receives data with a packet network(25) according to the request of the MS(21), reallocates the data be suitable for a matching condition for providing the reallocated data to the MS(21), and transmits a voice or data to an other MS(21). A CCF(Call Control Function)(23) controls and manages a call between the RAN(22) and a CSS(Common Subscriber Server)(24). The CSS(24) provides an SA(Security Association) setting function for a voice process, and unifiedly manages a mobility management function, a QoS(Quality of Service) management function, an authentication and authorization function, an accounting function, and a service management function with reference to the MS(21) through a common subscriber database.
Patent KR-20010091392-A (KR)
Inventor: YOO JUN YEONG
IPC: H01J11/28
Filed: 2000-03-15
Abstract: PURPOSE: A plasma display panel is provided to increase discharge sustaining period and improve luminance by causing auxiliary discharge from the auxiliary electrode and reducing address period. CONSTITUTION: A plasma display panel comprises a scanning/sustaining electrode(34) and a common sustaining electrode(36) which are formed in parallel onto an upper substrate; an auxiliary electrode(38) arranged between common sustaining electrodes so as to cause auxiliary discharge; and an address electrode(48) formed onto a lower substrate(46). The auxiliary electrode is arranged between two adjacent scanning lines, and the sustaining electrode included in each of adjacent scanning line in such a manner that common sustaining electrodes from among the sustaining electrode are arranged symmetrically centering from the auxiliary electrode so as to cause auxiliary discharge together with the auxiliary electrode.
Patent KR-20010089029-A (KR)
Title: Reagent composition and method for diagnosing malaria antibodies
Inventor: CHO MIN
IPC: G01N33/53
Filed: 2000-03-20
Abstract: PURPOSE: A malaria antibody diagnosing reagent composition and a method for diagnosing malaria antibodies are provided to promptly diagnose infection of malaria in a mass examination. CONSTITUTION: A method for diagnosing malaria antibodies includes the steps of putting malaria antibody diagnosing reagent composition into a buffer solution, blocking protein of the malaria antibody diagnosing reagent composition, diluting a sample for being reacted in anti-immune globulin and peroxides zygote solution, and coloring the reacted material and measuring light absorbance.
Patent KR-20010094611-A (KR)
Title: Apparatus generating an on screen display signal being changed in accordance with luminance level
Inventor: LIM JAE HUI
IPC: H04N5/445
Filed: 2000-03-31
Abstract: PURPOSE: An apparatus for generating an on screen display signal is provided to change a luminance status of an OSD according to a luminance status of an image signal. CONSTITUTION: A signal mixer(1) receives a digital luminance signal and an OSD signal. The signal mixer(1) includes a resistor(R1) having one terminal for receiving the digital luminance signal and the other terminal for receiving the OSD signal. A low pass filter(2) receives an output of the signal mixer(1). A clip section(3) receives an output of the low pass filter(2). The clip section(3) includes a resistor(R4), a transistor(Q1), and a zener diode(ZD1). One terminal of a resistor(R4) is connected to a power supply. An emitter of the transistor(Q1) is connected to the other terminal of the resistor(R4) and a base thereof is connected to an output terminal of the low pass filter(2). A luminance/color signal mixer(4) receives an output of the clip section(3) and a color signal and output an image signal.
Patent KR-20000071545-A (KR)
Inventor: KIM MIN GU
IPC: H03M13/27
Filed: 2000-04-03
Abstract: PURPOSE: An interleaving/deinterleaving device is provided to minimize the memory use necessary at random interleaving while satisfying random property, distance property and weight property. CONSTITUTION: An interleaving/deinterleaving device comprises an address generator(211) which generates a read address for changing the data order according to an input frame data size and an input clock. An interleaver memory(212) sequentially stores input data in a write mode and outputs data according to the address from the address generator(211). A counter(213) receives the clock and outputs the received clock as the write address of the interleaver memory(212). A deinterleaver memory stores input data according to a write address from the address generator(211) at a write mode, and sequentially outputs stored data at a read mode. A counter receives the clock, and provides a read address for reading data from the deinterleaver memory to the deinterleaver memory.
Patent KR-20000077002-A (KR)
Title: 시험 장치 및 시험 방법
IPC: G01R31/3167
Filed: 2000-04-04
Abstract: 본 발명은 용이하며 또한 저가로 복수의 아날로그 신호를 전기 부품에 공급하거나 또는 아날로그 신호와 디지털 신호를 고정밀도로 동기시켜 전기 부품에 공급할 수 있는 시험 장치를 제공하는 것으로, DUT(100)에 공급하는 시험 패턴을 규정하는 데이터를 기억하는 패턴 메모리(13A)와, 패턴 메모리(13A)에 격납된 데이터에 기초하여 DUT(100)의 복수의 입력 핀에 대해 입력할 복수의 시험 패턴을 디지털 신호로 발생하는 패턴 발생기(13)와, 복수의 시험 패턴 중 적어도 하나의 시험 패턴을 아날로그 신호로 변환하는 제1 필터(20B)와, 아날로그 신호의 시험 패턴을 포함하는 복수의 시험 패턴을 DUT(l00)에 공급하는 핀 일렉트로닉스(19)를 구비하도록 한다.
Patent KR-20010095784-A (KR)
Title: Apparatus for processing fusion of wastes
Inventor: KIL SANG IN
IPC: F23G5/00
Filed: 2000-04-12
Abstract: PURPOSE: A melting and treatment system of waste matter is provided to remove a limit in injection of metals contained in waste matter as well as not to require many burners necessary for melting waste matter. CONSTITUTION: A melting and treatment system of waste matter includes a melting furnace(20), a melting block(30) and a heater(40). The melting furnace is surrounded by sidewalls(21), and a melting tub(22) having a space is formed therein. A waste injection port(23) is formed on a sidewall of the melting furnace. A combustion gas discharge port(24) is formed on a sidewall having a distance from the waste matter injection port to discharge combustion gas generated from the waste matter molten by the heater. A slag discharge port(25) is formed on a sidewall(21) of the melting furnace in opposite to the combustion gas discharge port. The slag discharge port discharges slag obtained from waste matter molten in the melting tub. The melting block is installed to divide the melting tub into two spaces in the melting furnace. The melting block has a slag overflow unit(31) and a non-molten waste discharge unit(32). The heater is mounted on the melting furnace to heat the melting tub. The heater is used with two burners. After waste matter is molten by the heater, non-molten waste matter and slag is discharged to the non-molten waste discharge unit. Therefore, the melting and treatment system of waste matter melts waste matter completely without using many heaters therefor.
Patent KR-20010014828-A (KR)
Inventor: NIIMURA TOSHIKI
IPC: H01L29/49
Filed: 2000-04-26
Abstract: PURPOSE: To realize a manufacturing method of a semiconductor device, which is superior in breakdown strength of a gate oxide film and layer resistance and heat resistance. CONSTITUTION: The surface of a silicon substrate is sectioned by an element isolation region and a gate oxide film 6 and a polycrystalline silicon film 8 are formed. Then a titanium nitride film 10 is formed on the film 8 at a substrate temperature of 400 to 600deg.C by a collimated sputtering method. Moreover, a titanium silicide film 12 is formed on the film 10, and a laminated film consisting of the films 12, 10 and 8 is patterned to constitute a gate electrode and after this, LD sidewalls 22 are formed. In this way, since the film 10 is formed at a high substrate temperature by the collimated sputtering method, the high barrier property film 10, which does not cause the breakdown voltage of the film 6 to deteriorate, can be realized. By adapting a titanium polysilicide film using a barrier film consisting of the film 10 to a DRAM, a low-resistance word line can be formed and a highly integrated DRAM can be obtained.
Patent KR-20010091832-A (KR)
Title: automobile emblem
Inventor: JANG SUK JO
IPC: B60R99/00
Filed: 2000-05-17
Abstract: PURPOSE: An emblem of a vehicle for securing visibility of blind areas is provided to decide presence of front obstacles as well as to secure visibility of side front areas by mounting rotatable mirrors at both sides of an emblem set on the front side of a hood. CONSTITUTION: A blind area is formed at the front side or the side rear at the narrow crossroads of when a large vehicle is stopped on a side. To secure visibility of the blind area from a driver's seat, an emblem on a front hood is rotated at a specific angle and a couple of mirrors(24) are spread. The visibility of the blind area is secured through the mirrors formed at both sides of the emblem. The rotated emblem is returned to the original position automatically by a control unit in a specific time. To rotate the emblem, a drive shaft(31) is rotated by a motor(30). A drive gear(32) is operated by the drive shaft, and the rotation is transferred to a body drive gear unit engaged with the drive gear. A decelerator(33) on a side of the body drive gear unit is rotated, and a pinion gear(34) is interlocked. Thereby, a rack gear(35) is moved backward. When the rack gear is moved backward, a link(36) pushes the center of the mirrors to spread the mirrors. A body(23) is rotated to be on the straight line with a driver. In a specific set time, the emblem is rotated in the opposite direction of the gear to be returned to the original position. The mirrors are folded. In addition, an approach sensor(50) is mounted on the front side to detect obstacles in front of a vehicle. The detected data are output through a display(60) to promote convenience in parking.
Patent KR-20010014956-A (KR)
Inventor: MORI KIYOSHI
IPC: H01L27/108
Filed: 2000-05-20
Abstract: PURPOSE: To obtain performance required in each of a MOS transistor in a semiconductor memory and a MOS transistor in a logic device even if a system LSI wherein the semiconductor memory and the logic device are combined together is manufactured. CONSTITUTION: Formation of silicide 7 on a logic device region 11 allows low resistance to be implemented in a conductive film 4, such as polysilicon which will become an electrode of a MOS transistor, and a diffusion layer 9. Hence, according to this method, a semiconductor device can be manufactured, wherein not only a MOS transistor usable for a logic device of which high-speed operation is required, but also a MOS transistor usable for a DRAM of the like of which microfabrication is required. Further, since the structure of each MOS transistor is not modified, the semiconductor device can be manufactured, wherein the MOS transistors are equivalent in their performance.
Patent KR-20000063225-A (KR)
Inventor: LEE JUNG HOON
IPC: A01G31/00
Filed: 2000-05-24
Abstract: PURPOSE: Provided is a cultivating method of bean sprouts by using vinegar, medicinal herbs. CONSTITUTION: The cultivating method comprises the steps of impregnating black bean with a solution comprising 100 parts by weight of medicinal extract solution and 1 parts by weight of vinegar for 4 hours; and then sprouting it in a jar. In the method, medicinal herbs are the young antlers of the deer, insam, Ganoderma lucidum, Schizandra chinesis BAILL., licorice root, plum, Chinese matrimony vine, Angelica acutiloba, Rehmanniae Radix Preparata, mugwort, Cnidium officinale, Astragalus membranceus Bunge, Pueraria thunbergiana BENTH., jujube, ginger.
Patent KR-20010108556-A (KR)
Inventor: PARK SU YEONG
Filed: 2000-05-29
Abstract: 본 발명은 디젤연료분사장치의 서플라이 펌프 중 베인에 작용하는 토출압을 이용하여 베인의 캠면 이탈을 방지되게 한 토출압 보상형 피드펌프에 관한 것으로, 
     고압실과 저압실이 형성된 플레이트와, 베인삽입홈에 베인이 삽입된 원형의 로터와, 내접면이 형성된 캠링이 결합된 피드펌프에 있어서, 
     플레이트의 축공 주연부에 링상의 홈을 형성하여 유로에 의해 고압실과 연결되게 하고, 이에 로터의 베인삽입홈의 밑단부가 일치되게 한 것이다.
Patent KR-20010109834-A (KR)
Inventor: LEE JANG CHOON
Filed: 2000-06-02
Abstract: 본 발명은 캐릭터 생성 방법에 대하여 개시한다. 본 방법은, 얼굴 사진을 입력하는 단계(s110), 상기 입력된 얼굴사진으로부터 기본 윤곽(edge)을 추출하는 단계(s120), 상기 추출된 기본 윤곽에서 직선 또는 곡선을 추출하고 분석하는 단계(s130), 상기 추출 및 분석된 직선 또는 곡선으로부터 종합 이미지를 분석 및 검토하는 단계(s140), 상기 분석 및 검토결과로부터 이미지 테이블을 생성하는 단계(s150), 캐릭터 수치정보 데이터베이스를 검색하는 단계(s160), 상기 검색결과로부터 최적비율 테이블을 생성하는 단계(s170), 상기 생성된 이미지 테이블과 최적비율 테이블로부터 상기 종합 이미지가 근사치내에 매칭되는지 확인하는 단계(s180), 상기 확인 결과 매칭이 안되면 최적비율을 계산하여 다시 매칭되는지 확인하는 단계(s190), 상기 확인 결과 매칭이 되면 원시캐릭터를 생성하는 단계(s200), 상기 생성된 원시캐릭터에 특성을 부여할지 여부를 결정하는 단계(s210), 상기 결정결과 특성을 부여하기를 원하면 특성수치를 계산하는 단계(s220), 상기 결정결과 특성을 부여하기를 원하지 않으면 구성요소별 특성부여 캐릭터를 생성하는 단계(s230) 및 상기 구성요소별 특성부여 캐릭터가 생성되거나 특성수치가 계산되면 다양한 표정의 캐릭터를 생성하는 단계(s240)를 포함하여 이루어진다. 
     본 발명은 또한 표준 캐릭터를 작성하는데 사용되는 캐릭터 수치정보 데이터베이스 구축 방법을 나타낸다. 본 방법은, 손으로 작성한 캐릭터를 입력하는단계(s310), 상기 입력된 캐릭터의 기본 윤곽(edge)을 추출하는 단계(s320), 상기 추출된 기본 윤곽에서 직선 또는 곡선을 추출하고 분석하는 단계(s330), 상기 추출 및 분석된 직선 또는 곡선으로부터 종합 이미지를 분석 및 검토하는 단계(s340), 상기 분석 및 검토결과로부터 수치를 정보화 하는 단계(s350) 및 상기 정보화된 수치를 캐릭터 수치정보 데이터베이스로 구축하는 단계(s360)를 포함하여 이루어진다. 
     그리고 본 발명은 인터넷 기반의 캐릭터 서비스업자가, 무선통신, e-mail 및 채팅시 개인의 익명성과 개성을 확보하기 위해 사용되는 개인 캐릭터를 제작하기 위한 방법에 대해서도 개시하며 이 방법은, 캐릭터 서비스업자가 표준 캐릭터를 저장하는 데이터베이스를 구축하는 단계(s1100), 캐릭터를 제작하기 원하는 자(이하 "사용자"라 함)가 캐릭터 서비스업자의 사이트를 방문하는 단계(s1200), 상기 방문한 사용자가 캐릭터 서비스업자에게 캐릭터 제작을 의뢰할지 또는 상기 서비스업자로부터 캐릭터 제작 툴을 구입할지를 결정하는 단계(s1300), 상기 결정에 따라 서비스업자에게 캐릭터 제작을 의뢰하는 경우 서비스업자가 주문형 캐릭터 제작방법에 의해 캐릭터를 제작하여 사용자에게 제공하는 단계(s1400) 및 상기 결정에 따라 서비스업자로부터 캐릭터 제작 툴을 구입하기를 원하는 경우 서비스업자가 캐릭터 제작 툴을 사용자에게 발송하는 단계(s1500)를 포함하여 이루어진다.
Patent KR-20000058495-A (KR)
Inventor: KIM JIN KYUNG
IPC: A23B7/10
Filed: 2000-06-03
Abstract: PURPOSE: A process for producing Kimchi using heated vegetables is provided which can be used as a food for a diet, curing a constipation, high pressure patients, kidney trouble patients because an amount of salt can be controlled by using the process. CONSTITUTION: The Kimchi is produced by heating vegetables such as a cabbage, a radish, a cucumber, etc. at 50°C or more in water or soup and then mixing the heated vegetables with the Kimchi juice, a seed bacteria of a lactic acid bacteria, vitamin C, and various spices and condiments.
Patent KR-20010110605-A (KR)
Inventor: YOON JONG HYEON
Filed: 2000-06-07
Abstract: 본 발명은 양념병에 관한 것으로, 용기(140)의 주출구에 결합되고 중앙에 주출공(111)을 형성시키되 주출공(111)의 가장자리에 차단돌기(114)를 형성시킨 마개(110)와, 상기 마개(110)의 외주연에 결합시켜 회전되게 하고 내부에 수직으로 삽입구(136)를 형성하여 마개(110)의 주출공(111)에 대향되게 하되 삽입구(136)의 외주연에 나선홈(135)을 형성하고 상단에 테이퍼 형상의 주출공(132)을 형성시킨 조절구(130)와, 상기 조절구(130)의 삽입구(136)에 삽입시키는 가이드관(121)을 형성하되 가이드관(121)의 하단에 하향으로 차단돌기(125)를 형성하여 마개(110)의 주출공(111)에 형성된 차단돌기(114)에 회전되어 대향되게 하며 가이드관(121)의 외주연에 회전돌기(124)를 돌출시켜 조절구(130)의 나선홈(135)에 삽입시키고 가이드관(121)의 상부에 가장 자리에 주출공(122)을 형성시킨 테이퍼 형상의 차단구(123) 부착한 작동구(120)로 구성하여 양념병의 용기 주변에 고춧가루 또는 후춧가루 등의 양념류가 묻는 것을 방지하여 항상 청결하게 사용할 수 있도록 하고 양념의 최초 사용후 보관할 때 기밀을 유지하여 맛과 향을 지속적으로 보존할 수 있도록 할뿐만 아니라 양념병에서 발생되는 세균서식이나 번식을 억제하여 위생적으로 사용할 수 있고 간편하게 사용할 수 있도록 하여 상품성과 편리성을 향상시키는 효과가 있다.
Patent KR-20010020978-A (KR)
Title: Press button switch
Inventor: TAKAHASHI KAZUNARI
IPC: H01H13/04
Filed: 2000-06-12
Abstract: PURPOSE: To provide a mounting structure of a frame on a housing capable of surely mounting the frame on the housing without increasing the configuration of the housing and a switch, easily assembling and preventing backlash from being generated after mounting the frame. CONSTITUTION: This push-button switch is provided with a housing 1 having a housing part and a frame 4 provided with a pair of arm parts 4c having an engaging part and mounted so as to cover the housing part. A recessed part 1d is disposed in a pair of opposed outer surfaces of the housing 1. A projecting locking part 4e is disposed on the engaging part of the arm parts 4c and extends in the recessed part 1d for engagement.
Patent KR-20010025165-A (KR)
Title: Mulching Device Mounted on Rice Transplanter
Inventor: LEE CHUNG RYUL
IPC: A01G13/00
Filed: 2000-06-16
Abstract: PURPOSE: A mulching machine for a rice planting machine is provided which is simply adhered to the planting machine so a mulching paper is covered first and then young rice seedlings are planted on the covered mulching paper when the planting machine moves forward. CONSTITUTION: The mulching machine for a rice planting machine comprises: (i) a height controlling unit which is vertically installed at both ends parts of a support frame(1); (ii) inserting holes(2) which are formed at the lower certain position of the height controlling unit; (iii) a roll supporting part(9) which has a roll, where a mulching paper is rolled up and which is installed by the inserting holes(2); and (iv) a cutter(7) which is adhered to a seedling planting device(6).
Patent KR-20020000245-A (KR)
Title: Method for protecting a shock at returning the fuel cut
Inventor: YOO SEUNG MUK
IPC: F02D41/10
Filed: 2000-06-21
Abstract: PURPOSE: A shock preventive method when restoring from fuel cut is provided to prevent a shock phenomenon according to a sudden rise of rotational frequency and to promote driving efficiency by preventing the occurrence of hunting. CONSTITUTION: A shock preventive method when restoring from fuel cut comprises the steps of: starting an engine of a car; deciding whether the car is running or not on the basis of a speed of 2.5 kilometers an hour; if the car runs at over 2.5 kilometers an hour, deciding whether an idler is running or not with an idle switch on and off; if the idle switch is on, deciding to be fuel cut among driving conditions; if the car is in a condition of fuel cut, measuring the quantity of fuel required for restoring; if the quantity of fuel required for restoring is measured, calculating the measured quantity of fuel in a time function and percentage and spraying as much as the appointed quantity of fuel.
Patent KR-20020001453-A (KR)
Title: A headphone with air chamber
Inventor: BYON GI MAN
IPC: H04R1/10
Filed: 2000-06-28
Abstract: PURPOSE: A headphone with an air room is provided to improve a contact characteristic and prevent a leakage of sound by controlling an expanding degree of an air tube. CONSTITUTION: A speaker is installed in an inside of a main body(100). A hair band(130) is connected with the main body(100). A projection(130) is projected from the main body(100). A headphone contact portion(200) is fixed to the main body(100). A projected groove(220) is formed at one side of an air tube(210). An air supply portion(300) is used for supplying air to the air tube(210). An injection tube(310) is connected with the air tube(210). An air room(320) is installed in the inside of the main body(100). The injection tube(310) is connected with the air room(320) by inserting an anti-counterflow valve(330) into the air room(320). A pump(340) is connected with the air room(320). An operating knob(360) having an external air injection hole(350) is connected to the pump(340). A pressure control portion(400) is used for controlling a pressure of the air tube(210). The pressure control portion(400) is an operating bar(410), a spring(420), and an operating knob(430).
Patent KR-20020002792-A (KR)
Title: Communication method between master and slaves of local wireless communication apparatus
Inventor: AHN YONG CHEOL
IPC: H04B7/00
Filed: 2000-06-30
Abstract: PURPOSE: A communication method between a master and a slave in a local radio frequency communication device is provided so that a whole band of a Bluetooth network can be efficiently used by changing an audio data format. CONSTITUTION: A master which is a Bluetooth module and a slave respectively include a Bluetooth host control unit(10) and a Bluetooth radio frequency unit(20). The Bluetooth host control unit(10) performs host interface and link management, and includes an external interface(12), a main control unit(14) and a link baseband controller(16). The link baseband controller(16) processes Bluetooth baseband and performs a physical layer protocol, and the external interface(12) interfaces the main control unit(14) and a host. The main control unit(14) performs various control operations for the host interface and link management. On the other hand, the Bluetooth radio frequency unit(20) includes a radio frequency transmission unit and a radio frequency reception unit, and performs radio frequency transmission and reception of audio and/or data between Bluetooth modules.
Patent KR-20020005805-A (KR)
Title: Watermarking method using block based on wavelet transform
Inventor: KIM WHOI YUL
IPC: H04N21/8358
Filed: 2000-07-10
Abstract: PURPOSE: A water marking method using block-based wavelet conversion, which does not requires the original image before insertion of watermark in detection of watermark of multimedia image data and accurately detects a changed portion, is provided to effectively protect CONSTITUTION: A watermark that people cannot recognize is generated(S1) and inserted into the original image data in order to protect
Patent KR-20020013146-A (KR)
Title: Method for selling goods capable of estimating on internet
Inventor: PARK JU HONG
Filed: 2000-08-11
Abstract: PURPOSE: A method for selling a commodity on the Internet is provided to select a prize winner when a prize winning date are reached although collected money is reached to a price of a commodity and to enhance a winning probability by effort of a buyer. CONSTITUTION: A shopping mall operator displays a commodity for a sale on a Web site of a computer(201). The buyer performs a log-in process to the Web site(211). In case that the buyer buys the commodity, the buyer selects a winning probability of the commodity, and inputs a predetermined number of a number position corresponded to the winning probability by forecasting a portion to be positioned by a winning number(221). The buyer supplies an amount of money in accordance with the winning probability to the shopping mall operator(231). The Web site publishes a prize winning number of the commodity, and a prize winner is selected in a prize winner publishing date(241).
Patent KR-20020015163-A (KR)
Title: Silica gel including mixed indicator and method for producing the same
Inventor: KIM JONG GIL
IPC: C01B33/14
Filed: 2000-08-21
Abstract: PURPOSE: Provided is a silica gel containing mixed indicators which makes it possible for a viewer to monitor the progress of water absorbed to the silica gel with his naked eyes and which can be prepared in a simple method. CONSTITUTION: The silica gel containing mixed indicators is produced by preparing a silica gel and incorporating mixed indicators having a discoloring region in an acid condition to the silica gel in an acid condition. The acid condition can be achieved by using the silica gel as produced or by adding an additional acid solution after washing the produced silica gel. The mixed indicators includes a mixture of methyl orange and bromocresol green or a mixture of methyl red and bromocresol green. By using this silica gel, the progress of water absorbed to the silica gel can be readily judged by a viewer.