baber/WOPTO huggingface dataset:
Patent JP-2022524789-A (JP)
Title: 没食子酸、エピカテキン、及びエピガロカテキンの含量が増加したカテキン酵素処理物及びその製造方法
IPC: A61K36/82
Filed: 2020-02-28
Abstract: 本発明は、没食子酸、エピカテキン(EC)、及びエピガロカテキン(EGC)の含量が増加したカテキン酵素処理物の製造方法、上記製造方法により製造されたカテキン酵素処理物及びその使用に関する。
Patent JP-2022524610-A (JP)
Title: 削岩設備及び削岩機
IPC: F15B15/22
Filed: 2020-03-16
Abstract: 削岩設備（１００）は、衝撃装置（１）であって、フレーム（２）、前記フレーム（２）内の圧力チャンバ（３ａ、３ｂ）、及び前記衝撃装置（１）内に配置されたピストン（４）を備える、衝撃装置（１）を備える。本設備は、衝撃装置（１）をキャリッジ（６）に取り付けるための後方装着設備（５）と、衝撃装置（１）を機械部品（１０）に取り付けるための前方装着設備（７）と、ピストンの軸方向（Ｘ）において後方装着設備（５）の前側に配置された少なくとも１つの前方蓄圧器（８）と、後方装着設備（５）の背側に配置された少なくとも１つの後方蓄圧器（９）とをさらに備える。前方蓄圧器（８）及び後方蓄圧器（９）は、圧力室（３ａ、３ｂ）のうちの１つに接続され、前記圧力室（３ａ、３ｂ）内の圧力変動を吸収するように配置される。【選択図】図２
Patent JP-2023504945-A (JP)
Title: 制御車両
IPC: B60W50/00
Filed: 2020-10-16
Abstract: 車両制御方法であって、目標車両の車両情報及び目標車両が位置する参照環境の環境情報を取得する。車両情報及び環境情報に基づいて、目標行列を取得するステップと、目標行列を分割し、複数のサブ行列を取得するステップと、各サブ行列中の行列要素及び目標車両の周囲車両の走行制御情報に基づいて、目標車両の目標走行制御情報を取得するステップとを含む。【選択図】図２
Patent JP-2022526113-A (JP)
Title: 耐切断性ポリエチレン原糸、その製造方法、およびこれを用いて製造された保護用製品
IPC: D02J1/22
Filed: 2020-03-20
Abstract: 本発明は、高い耐切断性を有しながらも優れた着用感を提供できる保護用製品の製造を可能にするポリエチレン原糸、その製造方法、およびこれを用いて製造された保護用製品に関する。本発明のポリエチレン原糸は、溶融紡糸により製造されるにも関わらず高い強度を持つことによって、高い耐切断指数を有する保護用製品の製造を可能にする。また、本発明のポリエチレン原糸は、低い初期モジュラス及び高い伸び率を持つことによって、優れた着用感を有する保護用製品の製造を可能にする。
Patent JP-2022530497-A (JP)
Title: 高輝度レーザ生成プラズマ光源
IPC: H05G2/00
Filed: 2020-04-24
Abstract: レーザ生成プラズマ光源を提供する。レーザ生成プラズマ光源は，相互作用ゾーン（４）のターゲット（３）に上記ターゲット上に集束されるパルス・レーザ・ビーム（８）を提供する回転ターゲット・アセンブリ（２）を備える真空チャンバ（１）を含む。上記ターゲットは上記回転ターゲット・アセンブリに設けられた環状溝（６）の表面上の環状溶融金属層である。短波長放射の出力ビーム（９）が上記相互作用ゾーンから外に出る。デブリ軽減手段が設けられ，これは上記相互作用ゾーン（４）を取り囲むように堅固に取り付けられたデブリ・シールド（24）を含み，上記デブリ・シールド（24）は静止している。デブリ・シールドは上記レーザ・ビーム（８）の入口を形成する第１の開口部（25）および上記出力ビーム（９）の出口を形成する第２の開口部（26）を備えている。
Patent JP-2022549979-A (JP)
Title: スクリーンショットイメージを用いたシーケンス抽出
IPC: G06F3/0481
Filed: 2020-09-30
Abstract: ロボティックプロセスオートメーションワークフローを生成するために、スクリーンショットイメージを使用したシーケンス抽出のためのシステムおよび方法が開示される。システムおよび方法は、プロセッサを用いて、ユーザーがアプリケーション上で実行したステップの複数のスクリーンショットをキャプチャすることと、スクリーンショットをメモリに格納することと、アクションを任意の事前定義された数のクラスタにランダムにクラスタ化することにより、キャプチャされたスクリーンショットからアクションクラスタを決定することであって、同じアクションのさまざまなバリエーションのスクリーンショットがクラスタ内でラベル付けされることと、クラスタからシーケンスを抽出し、スクリーン上の結果イベントをクラスタから削除することと、抽出されたシーケンスに基づいて、自動化されたワークフローを生成することと、を含む。
Patent JP-2022534368-A (JP)
Title: 凍結の危険がある部品要素を静力学的に密封するためのパッキン装置
IPC: H05B3/14
Filed: 2020-05-06
Abstract: 本発明は、凍結の危険があるディスク状の知覚的および／または光学的部品要素（１；１’）を、これに縁側で当接する部品ハウジング（２；２’）に対して静力学的に密封するためのパッキン装置であって、それらの間に配置される静力学的ハウジング密封用の少なくとも１つのエラストマーパッキン要素（３；４；４’；４’’；４’’’）を含み、前記エラストマーパッキン要素が、前記エラストマーパッキン要素（３；４；４’；４’’；４’’’）から前記部品要素（１；１’）への熱伝導で除氷を行うために電気的に加熱させるための手段を備えている前記パッキン装置に関する。この場合、前記パッキン要素（３；４；４’；４’’；４’’’）を電気的に加熱させるための前記手段は導電性エラストマーを含み、前記導電性エラストマーは、互いに間隔をもって前記パッキン要素（３；４；４’；４’’；４’’’）に常設されている少なくとも２つの電気接触部位（５；５ａ；５ｂ）を介して、電気エネルギーで付勢可能である。【選択図】 図１
Patent JP-2022535123-A (JP)
Title: 電池管理システムおよび管理方法
IPC: H04W24/04
Filed: 2020-06-30
Abstract: 本発明は、第１通信チャネルを用いて通信する第１上位電池管理システムと通信する無線通信部と、前記第１通信チャネルを用いて通信する前記第１上位電池管理システムの通信異常を検知する通信異常検知部と、前記通信異常検知部により前記第１上位電池管理システムの通信異常が検知されると、前記無線通信部の通信チャネルを前記第１通信チャネルとは異なる第２通信チャネルに変更するチャネル変更部と、を含む、電池管理システムを含む。
Patent JP-2022539994-A (JP)
Title: 光増幅キャビティと共に使用するための測定システム
IPC: G03F7/20
Filed: 2020-06-09
Abstract: 光増幅キャビティと共に使用するための測定システムは、入力光学素子、結像システム及びディテクタを備える。入力光学素子は、入力放射ビームを受け取るため、及び、入力放射ビームの第１の部分を第１の光路に沿って及び入力放射ビームの第２の部分を第２の光路に沿って（例えば、光増幅キャビティ内へ）誘導するため、のものである。結像システムは、第１の光路上に配置され、像面内に、入力放射ビームの第１の部分の第１及び第２の像を形成するように構成され、第１及び第２の像は第１の光路に沿った２つの異なる面のものである。ディテクタは、像面内に配設され、第１及び第２の像を検出するように動作可能である。【選択図】図２
Patent JP-2022549051-A (JP)
Title: ディープラーニングモデルを用いた画像診断装置及びその方法
IPC: G06T7/00
Filed: 2020-06-30
Abstract: 入力された医療画像から抽出された画像に対して正常であるのに異常として判断する確率分布及び異常であるのに正常として判断する確率分布に対して個別の加重値を付与した加重損失関数を用いた、学習されたディープラーニングモデルを用いて、入力された医療画像に含まれた組織に対して疾病の正常及び異常のいずれか一つに分類する、ディープラーニングモデルを用いた画像診断装置及びその方法を開示する。【選択図】 図１
Patent JP-2022058527-A (JP)
Title: Manufacturing method for el display device
IPC: G09F9/00
Filed: 2022-01-07
Abstract: PROBLEM TO BE SOLVED: To simplify a manufacturing process for a thin film transistor mounted on an EL display device. 
     SOLUTION: A first conductive film, an insulating film, a semiconductor film, an impurity semiconductor film, and a second conductive film are stacked, a first resist mask is formed thereon, first etching is performed to form a thin film laminate, second etching including side etching to the thin film laminate is performed to form a gate electrode layer, a source electrode, a drain electrode, and the like are formed using a second resist mask, so that a thin film transistor is formed. Using the thin film transistor, an EL display device is manufactured. 
     SELECTED DRAWING: Figure 6 
     COPYRIGHT: (C)2022,JPO&INPIT
Patent JP-2023102439-A (JP)
Title: Conveyance device
Inventor: SAKAMOTO TADAYOSHI
IPC: B65H5/22
Filed: 2022-01-12
Abstract: To provide a conveyance device capable of sufficiently suppressing warpage of a print medium and preventing contamination of the print medium and damage to an inkjet head.SOLUTION: A conveyance device includes: a conveyance belt 11 that attracts and conveys a print medium P; and a flexible sheet member 30 that extends in a conveyance direction of the conveyance belt 11, and is placed on the conveyance belt 11 such that a part of a range overlaps an end part of the print medium P extending in the conveyance direction, so that a range other than the part of the range is attracted to the conveyance belt 11.SELECTED DRAWING: Figure 2
Patent JP-2023102546-A (JP)
Title: Clamper, input circuit, and semiconductor device
Inventor: JOYITA ADRIAN
IPC: G05F3/26
Filed: 2022-01-12
Abstract: To provide a clamper which can cope with low-voltage drive.SOLUTION: For example, a clamper CLP1 comprises: a current source (for example, a depression-type transistor M40) which is connected between an external electrode 13 and an internal node n31 and is configured to generate a prescribed constant current IA0; a diode (for example, a diode-connected transistor M41) which is configured to have an anode connected to the internal node n31; and a current mirror CM1 which is configured to generate a second current IA2 corresponding to a first current IA1 flowing through the diode and draw it from the internal node n31 to a reference voltage node.SELECTED DRAWING: Figure 4
Patent JP-2023102967-A (JP)
Title: Construction method of structure and structure
Inventor: YANAI KENTARO
IPC: E04G21/14
Filed: 2022-01-13
Abstract: To provide a construction method of a structure that can secure the safety in earthquake within a construction period over a long term.SOLUTION: A construction method of a structure comprises a subgrade excavation step of constructing a mountain retention wall 20 and excavating a subgrade G up to a bedding surface G1, a foundation skeleton construction step of constructing pressure-proof board concrete 30 (a foundation skeleton) on the bedding surface G1, an underground steel erection step of erecting a steel frame 40 comprising steel columns 41 and steel beams 42 on the foundation skeleton, and a preceding floor construction step of constructing a preceding floor 10 on an apex part of the steel frame 40. By constructing a ground skeleton U with the preceding floor 10 as a work frame, construction work of the ground skeleton U and an underground skeleton L conducts parallelly.SELECTED DRAWING: Figure 5
Patent JP-2023103074-A (JP)
Title: wiring board assembly
Inventor: MURAKAMI TAKESHI
IPC: H05K1/11
Filed: 2022-01-13
Abstract: To provide a wiring board assembly capable of achieving improvements in productivity and yield, and reduction in cost.SOLUTION: A wiring board assembly 1 includes a first FPC 10, a second FPC 20, and a connector 40 to which the first and second FPCs 10, 20 are connected. A base material 11 of the first FPC 10 includes a first region 111 where a terminal part 122 of a wiring pattern 12 is arranged, and a base material 21 of the second FPC 20 includes a third region 211 where a terminal part 222 of a wiring pattern 22 is arranged. The first FPC 10 and the second FPC 20 are superimposed on each other in the first and third regions 111, 211, respectively. In a state where the first and second FPCs 10, 20 superimposed on each other are respectively folded in the first and third regions 111, 211, contact pins 13, 23 respectively connected to the terminal parts 122, 222, are inserted into an accommodation hole 411 of a housing 41 to be mated with a connector terminal 42.SELECTED DRAWING: Figure 1
Patent JP-2022042024-A (JP)
Title: Game machine
Inventor: TOMIOKA HIRONORI
IPC: A63F7/02
Filed: 2022-01-17
Abstract: To provide a game machine that can enhance the interest.SOLUTION: A game machine includes symbol control means capable of performing a variation display of a symbol on the basis of the satisfaction of a predetermined start condition and performing a symbol game capable of deriving any one of the lottery results including a specific small winning and a special result V small winning that is more advantageous to a player than the specific small winning, and specific game state control means capable of controlling a game state to an A time-saving game state which is more advantageous to the player than a normal game state. The specific game state control means can terminate the A time-saving game state when the specific small winning is derived a specific number of times while the game state is controlled to the A time-saving game state that is more advantageous to the player than the normal game state. The game state can be controlled to any one of the multiple A time-saving game states including at least the A time-saving game state corresponding to a time-saving type mode 1 and the A time-saving game state corresponding to a time-saving type mode 2.SELECTED DRAWING: Figure 125
Patent JP-2023107040-A (JP)
Title: Semiconductor film of alkali earth metal oxide, semiconductor device, and method for manufacturing semiconductor film
Inventor: KATASE TAKAYOSHI
IPC: H01L29/872
Filed: 2022-01-21
Abstract: To realize a semiconductor film having a wide gap by use of alkali earth metal oxide.SOLUTION: A semiconductor film comprises an alkali earth metal oxide represented by the general formula, AEOxDy, where AE is an alkali earth metal selected from magnesium (Mg), calcium (Ca), strontium (Sr) and barium (Ba), O is oxygen, and D is hydrogen (H) or fluorine (F). In the case of D being hydrogen, composition ratio y/(x+y) is equal to or larger than 0.009 (y/(x+y)≥0.009). The alkali earth metal oxide semiconductor film has a band gap of over 4.0 eV.SELECTED DRAWING: Figure 4
Patent JP-2023107116-A (JP)
Title: Vehicular control apparatus
Inventor: NAKANISHI NAOKI
IPC: B60W20/19
Filed: 2022-01-21
Abstract: To improve acceleration responsiveness in executing an engine start and a power-on downshift simultaneously.SOLUTION: In the case of executing a power-on downshift of an automatic transmission associated with a required value of transmission torque increasing simultaneously with starting an engine, a given change rate in gradually increasing output torque of a power source is increased amid an inertia phase in the power-on downshift as compared to a period other than the inertia phase in the power-on downshift so as to realize a required value of transmission torque. Thus, input toque to the automatic transmission is quickly increased, prompting a progress in the power-on downshift. Therefore, it is possible to improve acceleration responsiveness in executing an engine start and a power-on downshift simultaneously.SELECTED DRAWING: Figure 5
Patent JP-2022115830-A (JP)
Title: Soil repair device and repair method for place polluted with organic chlorine agrochemical
Inventor: ZHOU YAN
IPC: B09C1/02
Filed: 2022-01-26
Abstract: To provide a soil repair device and a repair method for a place polluted with organic chlorine agrochemical.SOLUTION: A repair device comprises: a feed module 1 for pre-treatment of soil in a repair area; a screening module 2 coupled to the feed module 1; a composite repair system 3 for soil repair which is coupled to the screening module 2; and an elution liquid processing system 4 coupled to the composite repair system 3. A repair method includes pulverizing polluted soil, thereafter performing multi-stage screening, and performing composite synergistic repair processing including spraying and elution, spray elution, vapor heat discharge on the obtained soil particles.EFFECT: Without requiring off-site processing, composite high efficient repair of polluted soil can be achieved, polluted soil containing organic chlorine can be repaired quickly and the method can be popularized at large scale.SELECTED DRAWING: Figure 1
Patent JP-2023108922-A (JP)
Title: Steering control device and reference value adjustment method
Inventor: KODAI TAKASHI
IPC: B62D6/00
Filed: 2022-01-26
Abstract: To provide a steering control device and a reference value adjustment method that can effectively suppress a reduction of the effect of feedback-controlling a control angle.SOLUTION: A steering control device is intended to control a steering device including a turning part. The steering control device includes a turning side control unit in which a reference value θsd that is a value associated with a mechanical state of the turning part where turning wheels show a straight advancing state and which controls operation of the turning part. The turning side control unit executes control angle calculation processing of calculating a pinion angle θp as an integration angle that is an absolute angle with respect to the reference value θsd, angle feedback processing of feedback-controlling the pinion angle θp, and reference value adjustment processing of adjusting the reference value θsd on condition that it is in a factory mode. The reference value adjustment processing includes processing of adjusting the reference value θsd so as to minimize a deviation between the pinion angle θp and zero value when the pinion angle θp deviates from the zero value in the straight advancing state of the turning wheels.SELECTED DRAWING: Figure 3
Patent JP-2022044755-A (JP)
Title: Blood pump with filter
IPC: A61M60/216
Filed: 2022-01-27
Abstract: PROBLEM TO BE SOLVED: To provide a blood pump with a filter. 
     SOLUTION: An intravascular blood pump 1 comprises: a pump section 2 having a proximal portion 5 with a blood flow inlet 3 and a distal portion 6 with a blood flow outlet 4; and an impeller for causing blood to flow into the blood flow inlet 3 and towards the blood flow outlet 4. The blood pump 1 further comprises at least one filter 10 connected to the proximal portion 5 of the pump section 2 and arranged with respect to the blood flow inlet 3 so as to filter the blood before the blood enters the blood flow inlet 3. The filter 10 may comprise an expandable mesh structure made of a shape-memory material. 
     SELECTED DRAWING: Figure 1 
     COPYRIGHT: (C)2022,JPO&INPIT
Patent JP-2023110416-A (JP)
Title: Display controller, display device, method for controlling display, and program
Inventor: SATO MASAYASU
IPC: H04N23/60
Filed: 2022-01-28
Abstract: To provide a technique of showing a user a region where there is a large difference in the quality between two images of the same content with different dynamic ranges.SOLUTION: The display controller includes: acquisition means for acquiring a first image as an image with a first dynamic range and a second image with a second dynamic range smaller than the first dynamic range, the second image showing the same content as the content shown in the first image; selection means for selecting, when the first image and the second image have one or a plurality of feature regions, at least any of one or the plurality of feature regions as a noted region on the basis of the gradation value used in one or the plurality of feature regions; and display control means for controlling display means to present the noted region as well as displaying the first image and the second image.SELECTED DRAWING: Figure 2
Patent JP-2023116927-A (JP)
Title: Memory system and memory control method
Inventor: MANDAI YUKI
IPC: G06F11/10
Filed: 2022-02-10
Abstract: To reduce time required for decoding.SOLUTION: A memory system includes a nonvolatile memory having multiple memory cells, and a memory controller. The memory controller executes a first decoding process to first data read from multiple memory cells by using multiple first read voltages, generates a histogram for expressing the number of memory cells for each threshold voltage of the multiple memory cells by reading multiple pieces of second data from the multiple memory cells by using multiple second read voltages for each of the multiple first read voltages when the first decoding process fails, executes a tracking process for locating a position of a bottom of the generated histogram, obtains likelihood information of the second data by using a likelihood table determined for each of multiple bottoms specified for the multiple first read voltages and multiple pieces of second data read in the tracking process, and executes a second decoding process using the likelihood information.SELECTED DRAWING: Figure 1
Patent JP-2022084590-A (JP)
Title: Antibody formulations
IPC: A61K47/10
Filed: 2022-02-17
Abstract: PROBLEM TO BE SOLVED: To provide stable aqueous pharmaceutical formulations comprising antibodies. 
     SOLUTION: The invention provides stable aqueous pharmaceutical formulations comprising a therapeutic antibody, trehalose, a buffer, and optional surfactant, and having a pH in a range of about 5.5 to about 7.0. The invention also provides methods for making such formulations and methods of using such formulations. 
     SELECTED DRAWING: None 
     COPYRIGHT: (C)2022,JPO&INPIT
Patent JP-2022126619-A (JP)
Title: Control element, breech bolt stopper, bolt carrier, trigger, trigger assembly for automatic firearm, and automatic firearm provided with the same
Inventor: STEFAN THIMM
IPC: F41A3/36
Filed: 2022-02-18
Abstract: To provide a control element, a breech bolt stopper, a bolt carrier, a trigger, an automatic firearm trigger assembly, and an automatic firearm provided with the same.SOLUTION: The current invention is a control element 10 for controlling a breech bolt stopper 20 which is capable of moving between a standby position for releasing a bolt carrier and a holding position for holding the bolt carrier that is capable of moving around a first rotary shaft A and has a first arm rotatable around a second rotary shaft B. The first arm is provided with a first control part 11 which has a first contact surface and a second contact plane facing opposite to the direction of the first contact surface and is rotatable around the second rotary shaft B for the control element 10 by a control curve on the bolt carrier. The first arm is about the control element 10 provided with a second control part controllable by the control surface on the trigger.SELECTED DRAWING: Figure 2
Patent JP-2023121958-A (JP)
Title: Mobile selling apparatus
Inventor: KAWADA KENTO
IPC: G06Q30/06
Filed: 2022-02-22
Abstract: To provide a mobile selling apparatus that enables effective use of various equipped devices and the like while moving even when sales cannot be conducted.SOLUTION: A mobile selling apparatus is configured to be movable, sells products displayed on an equipped display portion, and includes: an operation display unit that displays information for an operator who trades the products and accepts an operation by the operator; a product information display unit that is provided in the display portion and displays information on the displayed products; and a display control unit that causes an advertisement to be displayed by at least any of the operation display unit and the product information display unit while the mobile selling apparatus is moving.SELECTED DRAWING: Figure 8
Patent JP-2023123051-A (JP)
Title: Operation restart method for thermal decomposition furnace
Inventor: SATO SHOKEN
IPC: C10G9/00
Filed: 2022-02-24
Abstract: To provide an operation restarting method for a thermal decomposition furnace that can extend a continuous operation period of the thermal decomposition furnace when the thermal decomposition furnace is restarted after decoking a thermal decomposition tube for thermal decomposition treatment of hydrocarbons.SOLUTION: An operation restarting method for a thermal decomposition furnace comprises: a step (1) of continuously supplying a decoking airflow for a predetermined time B1 or more while heating a thermal decomposition tube after hydrocarbon thermal decomposition treatment to a predetermined temperature A1; a step (2) of determining completion of coke removal in the step (1) using indicators related to decoking actually measured in the thermal decomposition tube; a step (3) of continuously supplying a decoking airflow 2 for a predetermined time B2 or less while heating the thermal decomposition tube after the step (2) to a predetermined temperature A2; and a step (4) of restarting the hydrocarbon thermal decomposition treatment under a condition that a rate of increase in differential pressure per unit volume of the thermal decomposition tube after the step (3) becomes a predetermined value or less, wherein the temperature A2 and/or the time B2 are determined in advance so that the rate of the increase in the differential pressure in the step (4) becomes the predetermined value or less.SELECTED DRAWING: None
Patent JP-2023124368-A (JP)
Title: Semiconductor manufacturing equipment, wafer transfer system, wafer transfer method and wafer transfer program
Inventor: KITA TEPPEI
IPC: H01L21/677
Filed: 2022-02-25
Abstract: To provide semiconductor manufacturing equipment, wafer transfer systems, wafer transfer methods, and wafer transfer programs that enable efficient operation of the entire system.SOLUTION: The semiconductor manufacturing equipment of the embodiment has a first transfer section, a processing section in contact with the first transfer section, a transfer module with an arm driving section and an arm supporting section in the first transfer section, and a transfer arm with a first transfer module and a second transfer module that can be driven independently of each other. The first and second transfer modules can be coupled and/or separated.SELECTED DRAWING: Figure 2
Patent JP-2023125190-A (JP)
Title: inkjet printer
Inventor: SAKAI CHIHIRO
IPC: B41J2/01
Filed: 2022-02-28
Abstract: To provide an inkjet printer which makes transport of a recording medium less likely to be hindered even if an apron is heated.SOLUTION: An inkjet printer includes: a platen 15 in which a recording medium is placed on an upper surface 15A; a transport device which transports the recording medium in a transport direction X; a front apron 40 which is disposed at the downstream of the platen 15 in the transport direction X and guides movement of the recording medium by the transport device; and a heating device which heats the front apron 40. An upstream side end 40U of the front apron 40 extends in a scanning direction Y and a center part 40UM as seen in the scanning direction Y is recessed in a downward direction D further than both ends 40UL and 40UR.SELECTED DRAWING: Figure 10
Patent JP-2023125986-A (JP)
Title: Substance introduction device and substance introduction method
Inventor: KITAMURA AKIHIRO
IPC: C12M1/00
Filed: 2022-02-28
Abstract: To provide a substance introduction device and substance introduction method that improve the usefulness of the technique of introducing a substance into a cell by electroporation.SOLUTION: The substance introduction device according to the present disclosure introduces a substance into a cell by electroporation, comprising: a substance introduction unit having a container configured to contain a cell suspension containing the cell and the substance, and an electrode pair having an electrode surface exposed to an internal space of the container and configured to apply a voltage to the cell suspension contained in the container; and a cleaning unit configured to clean the electrode surface.SELECTED DRAWING: Figure 1