baber/WOPTO huggingface dataset:
Patent JP-2002529148-A (JP)
IPC: A61F13/49
Filed: 1998-11-10
Abstract: The present invention is directed to a fastener device. The fastener device comprises a base having a first surface and a second surface opposing the first surface; a securing means provided on the first surface of the base; a first adhesive provided on the second surface of the base; and a cover member having an anchor region and a protective region. The anchor region is joined to a part of the second surface of the base through the first adhesive, while the protective region is joined to the securing means so as not to expose the securing means prior to an intended use of the securing means. The present invention is also directed to a method for making the fastener device.
Patent JP-2002529070-A (JP)
Title: 胚性幹細胞
IPC: A61K35/12
Filed: 1999-11-09
Abstract: (57)【要約】
本発明は、未分化のヒト胚性幹細胞と、培養および増殖する方法と、分化した細胞の作製とに関し、詳細には、in vitroで分化した体細胞性幹細胞を作製することができるヒトESを作製することと、成熟した体細胞を生ずることができる前駆細胞と、それらの使用とに関する。本発明の一態様において、in vitroで増殖することができる未分化のヒト胚性幹細胞の精製された調製物が提供される。別の態様において、未分化の胚性幹細胞からin vitroで分化した体細胞が提供される。成熟した体細胞を生じることができる前駆細胞も提供される。
Patent JP-2002534228-A (JP)
IPC: A61M5/50
Filed: 2000-01-11
Abstract: The invention concerns a device for administering an injectable product in doses, wherein the device includes a casing, comprising a reservoir for the product, a piston, which when moved in a feed direction towards an outlet of the reservoir forces product from the reservoir, a gear rack, moving the piston in the feed direction, comprising a first series of teeth and a second series of teeth, a drive member, movable relative to the casing in and counter to the feed direction, and slaving the gear rack when moved in the feed direction, and a blocking means, arranged secured against shifting relative to the casing and cooperating with one of the series of teeth such that it prevents the gear rack from being moved counter to the feed direction and allows the gear rack to be moved in the feed direction.
Patent JP-2002535760-A (JP)
Title: 表示装置上でデータ構造を表示し、ナビゲートするための方法および装置
IPC: G06F3/0484
Filed: 2000-01-14
Abstract: (57)【要約】
ベース・ノード（例えば、インデックス・ウェブ・ページ）と、いくつかの子ノード（例えば、リンクされたウェブ・ページ）とを有するデータ構造（例えば、ウェブ・サイト）とを表示する方法は、親／子構造（２９３）内の各親／子ノード・ファミリに対して別々のメモリ・マップを構築するスパイダ・スレッドで始まる。次いでワイヤ・フレーム・ビューが、関連する子ノード（２９４）に対して定義される。次いで、それぞれがベース・ノードと関連するグラフィック表現と、子ノード（２９６）に割り当てられた多次元枠組みの表面のセグメントとを接続するいくつかのリンクが表示される。
Patent JP-2002535550-A (JP)
Title: 燃料噴射装置
IPC: F02M69/46
Filed: 1999-10-28
Abstract: (57)【要約】
内燃機関のための燃料噴射装置であって、該燃料噴射装置は、燃料噴射弁（１２）を液密に受容するための多数の接続スリーブ（１１）を有する燃料分配器（１０）を有している。確実な接続を行うために、各接続スリーブ（１１）には少なくとも１つの第１の接続部材（２２，２２′）が設けられていて、各燃料噴射弁（１２）には第２の接続部材（２３）が設けられている。第１の接続部材（２２）は接続スリーブ（１１）で半径方向内方に突き出ている。第２の接続部材（２３）は燃料噴射弁（１２）に溝状の凹部として構成されている。前記接続スリーブ（１１）は、第１の接続部材（２２）を有する端部区分（２５）で少なくとも１つのスリット状の中断部（２６）を有している。
Patent JP-2003507492-A (JP)
Title: 炭化水素中の有機フッ素化合物レベルの低減方法
IPC: C10G59/02
Filed: 2000-01-24
Abstract: (57)【要約】
最初に炭化水素混合物（１１８）をエダクター（１２０）に供給し、その炭化水素混合物中に揮発性低減添加剤とフッ化水素酸を含む触媒（１２２）をエダクトし、炭化水素触媒混合物（１３２）を生成させ、その炭化水素触媒混合物（１３２）を相分離させ、炭化水素混合物（１３２）よりも低濃度の少なくとも一種の有機フッ素化合物を有する炭化水素相（１２８）と触媒相（１３０）とを形成させ、その炭化水素相の少なくとも一部を取り出し、それにより、炭化水素生成物流（１３４）を形成させることによって、炭化水素混合物（１１８）中に存在する少なくとも一種の有機フッ素化合物のレベルを低減させるための系及び／又は方法を開示する。別の実施態様においては、触媒中に存在する揮発性低減添加剤の量を調整することによって、少なくとも一種の有機フッ素化合物の濃度及び／又は炭化水素混合物のＲＯＮを制御するための系及び／又は方法を開示する。
Patent JP-2002535398-A (JP)
Title: 細胞間質金属プロテイナーゼの逆ヒドロキメート阻害薬
IPC: A61P19/02
Filed: 2000-01-27
Abstract: (57)【要約】
式（Ｉ）の構造を有する化合物は細胞間質金属プロテイナーゼ阻害薬である。さらには、細胞間質金属プロテイナーゼ阻害組成物および哺乳動物における細胞間質金属プロテイナーゼの阻害方法も開示されている。
Patent JP-2003508010-A (JP)
Title: 多数変異型ジフテリア毒素ワクチン
IPC: A61K47/48
Filed: 2000-02-14
Abstract: (57)【要約】
ワクチンとして有用なポリペプチドを提供するような、多数の突然変異を有するジフテリア毒素ポリペプチドを開示する。
Patent JP-2002537471-A (JP)
IPC: C09D5/44
Filed: 2000-02-22
Abstract: Aqueous, lead-free cathodically depositable (CDL) coating compositions containing binders and, optionally, crosslinking agents, pigments, and/or additives conventionally employed in lacquers, as well as one or more sulfonic acid salts of the metals vanadium, manganese, iron, zinc, zirconium, silver, tin, lanthanum, cerium and/or bismuth and/or of organometallic compounds in a total amount of from 0.2 to 2 wt. %, calculated as metal and based on the resin solids.
Patent JP-2002540316-A (JP)
IPC: D21G1/02
Filed: 2000-03-23
Abstract: Oil is pumped from a tank (10) to points of service in the hydraulic roll control system of a papermaking machine, wherein the oil is pumped at least at one low pressure level such as is required for the lubrication of the roll bearings and/or drive gearbox and at least at one high pressure level such as is required for the pressure-loaded zones of a roll. The oil is filtered and if necessary cooled and the return circulation of oil is passed back to the tank (10). The oil is pumped from the tank (10) into a single low-pressure circuit by a pump or pumps (11a, 11b), with a capacity to meet overall demand of fluid flows delivered to the points of service. Supply lines form the circuit to desired points of service are passed through stages to stepwise elevate the line pressure to a desired high-pressure level.
Patent JP-2003536285-A (JP)
IPC: H04N7/01
Filed: 2000-03-30
Abstract: The invention provides a method and apparatus for conversion of video data from a source format to a second destination. Conversion can be performed in real time and intermediate data is stored in a buffer. Converted video data is written into the buffer at a first rate and read out of the buffer at a second rate. In order to avoid overflow and underflow conditions, a threshold value is determined based, at least in part, on the video format being converted. The threshold value indicates a point in frame conversion at which converted data is read out of the buffer.
Patent JP-2002542421-A (JP)
Title: 負荷制御回路および内燃機関の非常時作動方法
IPC: F01L9/20
Filed: 2000-04-11
Abstract: (57)【要約】
電気機械的に操作される吸気弁（５ａ，５ｂ）を備えた内燃機関において弁制御装置（１，２）と動作制御装置（９）とのデータ交換の欠落ないしは障害が発生したとき、弁制御装置（１，２）は吸気弁（５ａ，５ｂ）の電気機械的操作を全負荷制御時間へ切り替える。そして動作制御装置（９）はスロットルバルブ（１２）を適切に設定して、非常時動作において内燃機関の負荷制御がもはや弁による負荷制御ではなくスロットルバルブによる負荷制御によって行われるようにする。
Patent JP-2002542300-A (JP)
IPC: A61P27/02
Filed: 2000-04-21
Abstract: Disclosed is a method of treating fibrosis in a human or animal subject. The method comprises administering to the subject an effective amount of an antibody to an integrin or fragment thereof.
Patent JP-2002543242-A (JP)
Title: 動物排泄物を利用するための方法および装置
IPC: A61L2/02
Filed: 2000-05-01
Abstract: (57)【要約】
水のそれ自体の重量を数倍吸収できる無臭固体製造物が水除去によって復元可能であるように、動物からの実質的に固体の飼料排泄物および水を含む水性混合物を所定の大きさの周波数および所定の時間交流での処理にさらすことによって果たされる人工土壌、土壌改良剤あるいはピート代替物として役に立つ製造物の製造方法。
Patent JP-2002544043-A (JP)
Title: 車両の室内空間及び周辺環境の監視のための方法及び装置
IPC: B60R21/00
Filed: 2000-05-05
Abstract: (57)【要約】
本発明は、自動車の室内空間と周辺環境の把握のために用いられる方法及び装置に関している。この方法を実施するための装置は、車両周辺環境（１０３）、特に走行路の方向のビームパスと、車両室内空間（１０８）方向のビームパスを有するカメラ装置（１０）を備えている。求められた画像情報の制御と評価は計算ユニット（１１０）を介して行われている。
Patent JP-2003500962-A (JP)
Title: 信頼性のあるマルチキャスト
IPC: G06F15/173
Filed: 2000-05-24
Abstract: (57)【要約】
マルチキャスト・グループに関係するソース・デバイスとディスティネーション・デバイスの間において信頼性のあるマルチキャスト・サービスが運用される。ソース・デバイスは、第１のワーク・ユニットのストリームを生成する第１のソース・アプリケーション・インスタンス（ＡＩ）、および通信サービス（ＣＳ）を含んでいる。マルチキャスト・グループ内の各ディスティネーション・デバイスは、ＣＳ、およびワーク・ユニットを消費する少なくとも１つのディスティネーションＡＩを含んでいる。ソース・デバイスと複数のディスティネーション・デバイスの間においては、通信サービス／ファブリックが通信を提供する。複数のソースおよびディスティネーション・リソース（ＳＤＲ）が、第１のワーク・ユニットのストリームを対応するディスティネーション・デバイスに配信するため、および対応するディスティネーション・デバイスにおいて受信される第１のワーク・ユニットのストリームの強い順序設定を保証するために、マルチキャスト・グループ内のソース・デバイスと対応する複数のディスティネーション・デバイスの間において、対応する複数の信頼性のあるトランスポート・サービスを実装する。
Patent JP-2002207555-A (JP)
Title: Character input method for portable electronic equipment
Inventor: ASAEDA TAKAHIRO
IPC: H03M11/04
Filed: 2001-01-09
Abstract: PROBLEM TO BE SOLVED: To perform a character input by a small frequency of button pressing in a cellular phone. SOLUTION: An input mode is selected by pressing an input mode switching key 4. When a dial button 2 formed of figures of 0-9, * and # is pressed once, characters assigned thereto in each input mode are scrolled in order one by one in a display part 3. The character under display is selected by pressing the same dial button 2 once again. When '1' of the dial buttons 2 to which the 'a' column, for example, is assigned is pressed once in the state where the input mode is set to the 'kanji and hiragana syllabary' to input 'a', the characters of the 'a' column are scrolled on the display part 3 one by one in a fixed period. When the '1' of the dial buttons 2 is pressed once when 'a' is displayed in the display part 3, 'a' is selected.  When a character line displayed on the display part 3 is converted to kanji, convertible kanji characters are scrolled on the display part 2 for each kind by continuously pressing twice the dial button 2. When the dial button 2 is pressed once again, the kanji is selected.
Patent JP-2002200031-A (JP)
Title: Auxiliary cleaning tool for endoscope
Inventor: KOMI SHUJI
IPC: A61B1/12
Filed: 2001-01-09
Abstract: PROBLEM TO BE SOLVED: To provide an auxiliary cleaning tool for endoscope, which can clean all air and water pipes by itself by inserting the auxiliary cleaning tool into the cylinder of an air and water valve of an endoscope and moving the auxiliary cleaning tool by a prescribed distance in the inserting direction in that condition and enabling at least one of brush guide passages formed on the auxiliary cleaning tool to communicate with more than two of air and water passages connected to the cylinder. SOLUTION: When this auxiliary cleaning tool 50 is inserted into a cylinder 42 of an air and water valve and moved by a prescribed distance in the inserted direction in this condition, one brush guide passage 60 among brush guide passages 60, 62, 64 formed on the cleaning auxiliary tool 50 can be switched in between an air pipe 24 connected to the cylinder 42 and a water pipe 26.
Patent JP-2002208875-A (JP)
Title: Antenna-sharing unit
Inventor: KATO NOBORU
IPC: H04B1/3822
Filed: 2001-01-09
Abstract: PROBLEM TO BE SOLVED: To provide an antenna-sharing unit where the impedance drop of a SAW filter accompanying the rotation of a phase by a phase shifter is prevented. SOLUTION: The antenna-sharing unit is provided with a branching circuit 2, which is connected to an antenna and is branched to a reception side and a transmission side, a reception filter 3 connected to the reception side of the branching circuit 2 and a transmission filter 8 connected to the transmission side of the branching circuit 2. The reception filter 3 is provided with an LC filter 4 connected to the post stage of the branching circuit 2, phase shifter 5 connected to the post stage of the LC filter 4 and a plurality of SAW filters 6 and 7, which are connected to the post stage of the phase shifter 5 and have mutually different pass bands. The phase shifter 5 is constituted of a plurality of inductors L2 and L3, which are branched/connected to the output terminals of the LC filter.
Patent JP-2002207997-A (JP)
Title: Method and device for processing image
Inventor: KAWANO HAJIME
IPC: G06T1/00
Filed: 2001-01-11
Abstract: PROBLEM TO BE SOLVED: To easily and efficiently perform image processing by performing needed pixel data processing between once held partial pixel data in real time while updating the pixel data. SOLUTION: A stored pixel data group D8 is sequentially and repeatedly subjected to pixel data processing while shifting pixel data D1a and a pixel D3 under consideration to generate image data D2 for recognition corresponding to gradation image data D1 after a value stored as the pixel data group D8 for a processing area including a set of the pixel D3 under consideration and pixels D4 to D7 to be compared with, which are subjected to pixel data processing per pixel data D1a with each pixel data D1 of the gradation image data D1 under a time series that repeats horizontal scanning by one line each in a vertical scanning direction.
Patent JP-2002214258-A (JP)
Title: Frequency measuring system for temperature compensation type high stable oscillator
Inventor: KATO AKIRA
IPC: G01R23/14
Filed: 2001-01-16
Abstract: PROBLEM TO BE SOLVED: To build a frequency measuring system which enables easier and accurate measurement of a plurality of temperature compensation type high stable oscillators simultaneously. SOLUTION: Oscillators OSC1 to OSC6 to be measured are arranged in a ring on a base plate set in a thermostatic cell and mixers MIX1 to MIX6 are installed to mix output signals F1 to F6 from adjacent oscillators. Output signals MF1 to MF6 from the mixers MIX1 to MIX6 are counted with a frequency counter FC. Based on the resulting frequencies mf1 to mf6, linear simultaneous equations are used to calculate frequencies f1 to f6 of output signals of the oscillators OSC1 to OCS6.
Patent JP-2002217534-A (JP)
Title: Soldering apparatus
Inventor: TACHIBANA SHIGEHIRO
IPC: B23K3/02
Filed: 2001-01-17
Abstract: PROBLEM TO BE SOLVED: To provide a soldering apparatus, capable of uniformly cleaning an overall periphery of a tip of a soldering trowel and for enhancing the degrees of freedoms of an attitude of the soldering trowel. SOLUTION: The soldering apparatus comprises a gas-injecting nozzle 7, concentrically provided to cover a periphery of a distal end of the soldering trowel 2, and a compressed air supply tube 18 for communicating with the nozzle 7 through a gas supply tube 10 to blow a carbide of a flux adhered to an inert gas supply tube 17, for preventing an oxidation of the solder and the distal end of the trowel. In this case, the nozzle 7 is used for both injecting the inert gas and injecting the compressed air.
Patent JP-2002215576-A (JP)
Title: Remote process calling method
Inventor: TERADA MASAYUKI
IPC: G06F9/46
Filed: 2001-01-17
Abstract: PROBLEM TO BE SOLVED: To permit two-way remote object calling. SOLUTION: This remote process calling method allows a 2nd computer to remotely use processing that a 1st computer provides through a network, and has a step where a control connection as a two-way communication path is established from the 1st computer to the 2nd computer, a step where the 2nd computer indicates the remote use of the process of the 1st computer, a step where the 2nd computer sends information indicating the establishment of a virtual connection as a two-way communication line to the 1st computer through the control connection, a step where the 1st computer establishes the virtual connection to the 2nd computer, a step where the 2nd computer sends call information on the process of the 1st computer to the 1st computer through the virtual connection, a step where the 1st computer processes the call information and generates a return value information,  and a step where the 1st computer sends the return value information to the 2nd computer through the virtual connection.
Patent JP-2002217002-A (JP)
Title: Method of manufacturing ceramic electronic component
Inventor: INOUE HIDEHIRO
IPC: H01C7/02
Filed: 2001-01-22
Abstract: PROBLEM TO BE SOLVED: To secure the solder wettability of a ceramic elemental body while the characteristics of the body are prevented from being deteriorated by eliminating plating solution which has entered into the body. SOLUTION: A method of manufacturing a ceramic electronic component equipped with the ceramic elemental body and external electrodes carrying plated layers on their surfaces includes a step of eliminating the plating solution which has entered into the ceramic elemental body by drying the body at a high temperature after the outermost layers of the external electrodes are formed by wet plating, and a step of eliminating oxide films formed on the surfaces of the external electrodes when the elemental body is dried at the high temperature by barrel polishing.
Patent JP-2001298073-A (JP)
Title: Method and device for dechucking work piece from electrostatic chuck
Inventor: LEESER KARL F
IPC: H02N13/00
Filed: 2001-01-22
Abstract: PROBLEM TO BE SOLVED: To provide a method and a device for supplying a dechucking voltage applied to an electrostatic chuck so as to easily take off a workpiece. SOLUTION: This method has remaining chucking force information obtained from a dechucking operation to correct and improve a dechucking algorithm for the next wafer dechucking cycle. In order to prevent accumulation of charges in an electrostatic chuck when processing a series of workpieces after the respective workpieces are dechucked, chucking and dechucking voltages are reversed in polarity.
Patent JP-2002218173-A (JP)
Title: Image reader and light source luminous quantity inspection system
Inventor: WAKAHARA SHINICHI
IPC: G06T1/00
Filed: 2001-01-22
Abstract: PROBLEM TO BE SOLVED: To provide an image reader that can accurately detect the luminous quantity of a light source so as to keep proper image quality at all times. SOLUTION: The image reader employing a light source emitting light to an original and a line sensor receiving the reflected light from the original to output an image signal, is provided with an input/output means (I/F controller 309) that receives/outputs a signal to/from an external device at inspection of the luminous quantity of the light source, a luminous quantity detection means (a peak hold processing section 703 and a path selection section 705) that receives the image signal from the line sensor to detect the luminous quantity of the light source, and a control means that controls the light source, the line sensor and the luminous quantity detection means to detect the luminous quantity of the light source and outputs the result of detection to an external device via the input output means when receiving a detection instruction signal of the luminous quantity of the light source from the external device via the input/output means.
Patent JP-2002232663-A (JP)
Title: Network facsimile machine
Inventor: KISONO MASAATSU
IPC: H04M11/00
Filed: 2001-01-31
Abstract: PROBLEM TO BE SOLVED: To provide a network facsimile machine capable of improving the convenience of dial information registration, deletion and retrieval. SOLUTION: This network facsimile machine is provided with a database access controlling part 37 for accessing one-touch, reduction and group dial information registered in a database 45. The network facsimile machine is also provided with a data controlling part 33 for updating stored one-touch, reduction and group dial information, also periodically accessing the database 45 and updating the stored one-touch, reduction and group dial information when the information of the database 45 is changed. The network facsimile machine can also access a plurality of databases 45 by the control of the controlling part 37.
Patent JP-2002231202-A (JP)
Title: Battery storage structure
Inventor: TERUI KEIZO
IPC: H01M2/10
Filed: 2001-01-31
Abstract: PROBLEM TO BE SOLVED: To prevent failure such as liquid leakage even if inversely putting a battery in a battery case and to stably retain the battery. SOLUTION: A terminal retainer part 12 is provided between adjoining battery storage parts 11 for storing the batteries B and a terminal part 13 is disposed in the terminal retainer part 12. A projection 121c is formed from an end of side A of a battery insertion entrance 11 of the terminal retainer part in the battery insertion direction (direction of an arrow 1 of Figure 1) to the middle of a first partition 121 so that, when the battery B is inversely put therein, the projection 121c prevents a negative electrode terminal of the battery from contacting with a first contact terminal. It is so set that, as the depth of the battery longitudinal height from the side of the terminal retainer part 12 gets deeper in the battery insertion direction, the first contact terminal 131 becomes lower.  When the positive electrode terminal is press-contacted with the first contact terminal 131 by the elastic recovery force, a force in the battery insertion direction is applied to the positive electrode.
Patent JP-2002232575-A (JP)
Title: Phone conference system
Inventor: AMANO KIYOSHI
IPC: H04M3/56
Filed: 2001-02-02
Abstract: PROBLEM TO BE SOLVED: To provide a phone conference system by which people can simultaneously make phone calls without the need for an operator by utilizing an UnPBX. SOLUTION: A management section 18 designates a conference room 16 being an exchange connection destination of each line with respect to the lines received by a voice reply board 6, the voice signals of the lines are composited in the designated conference room 16 to make exchange connection and transmits the synthesized voice signal from the voice reply board 6 to each phone so as to allow people to make a simultaneous conversation via each phone.
Patent JP-2002227944-A (JP)
Title: Cable driving device
Inventor: SEKINE YOSHITAKA
IPC: E05F15/14
Filed: 2001-02-06
Abstract: PROBLEM TO BE SOLVED: To miniaturize a cable driving device having a tension generator for absorbing a slack of a cable and to improve the mounting lay-out performance. SOLUTION: A long frame tension arm 3 is supported by a support shaft 2 firmly provided onto a easing. An annular controller 5 is supported in a slidable state by an arc-shaped end surface 3a provided in the longitudinal direction of the tension arm. A compressed spring 4 is interposed between one longitudinal inner surface of the tension arm and the support shaft. A cable is elastically energized by a roller so as to generate tension for absorbing a slack of the cable. The support shaft is disposed to be received inside a roller, so that a tension arm and compressed coil spring are placed not to be extensively extruded from the roller. With theses means, a tension generator can be miniaturized, which achieves miniaturization of the actuator containing the tension generator and improvement of on-vehicle lay-out performance.
Patent JP-2002224731-A (JP)
Title: Lubricant supply method for cold rolling
Inventor: TAKAHAMA YOSHIHISA
IPC: B21B27/10
Filed: 2001-02-07
Abstract: PROBLEM TO BE SOLVED: To provide a lubricant supply method which prevents heat scratch without deterioration of yield of lubricant. SOLUTION: The lubricant supply method for cold rolling is characterized in setting and controlling lubricant supply quantity QL [liter.min-1] on the steel strip at the rolling stand, based on the calculation equation composed of strip width W [m], lubricant concentration of emulsion type lubrication oil QC [%], strip rolling speed V [m.min-1], and such parameters as distance between the application point of emulsion lubricant on the strip or the rolling roll and the entrance point of roll bite L [m], and a constant χSP.
Patent JP-2002237482-A (JP)
Title: Vacuum spin dryer method and vacuum spin dryer device
Inventor: NAGASAKI SHINICHI
IPC: F26B5/08
Filed: 2001-02-07
Abstract: PROBLEM TO BE SOLVED: To efficiently dry a substrate, such as a wafer, in a short time by a vacuum spin dryer method for drying the substrate and a vacuum spin dryer device. SOLUTION: The vacuum spin dryer method is a method to dry a substrate set on a rotor within a dryer by rotating the rotor and, composed of a process for gradually reducing a pressure within the dryer and a process for intermittently introducing an inert gas within the dryer. A water content in the substrate is turned into a mist by a synergistic effect due to a centrifugal force, a blowing-off due to the inert gas and a reduced pressure to enable to efficiently remove the water content and the substrate can be completely dried.
Patent JP-2002238998-A (JP)
Title: Powder dissolving apparatus
Inventor: TANAKA MASAHIRO
IPC: B01F1/00
Filed: 2001-02-14
Abstract: PROBLEM TO BE SOLVED: To provide a powder dissolving apparatus in which powder can be preferably dissolved in a dissolving method either by first supplying or by later supplying to prepare an original liquid having a uniform concentration when preparing the original liquid by dissolving the powder in the solution. SOLUTION: The apparatus is constructed in such a manner that, when using RO water and a B agent to stir and dissolve the B agent in the RO water, the RO water pumped out of a tank main body 31 is circulated by switching between a jetting nozzle 33 and a jetting nozzle 34, and the RO water is circulated in a forward direction and a reverse direction in the vertical direction in the entire tank 31 by the stream force of the RO water alternately jetted by the nozzles 33 and 34.