baber/WOPTO huggingface dataset:
Patent JP-2002529272-A (JP)
Title: 連続および同時コ・インジェクションによる三層射出成形方法
IPC: B29L9/00
Filed: 1999-11-02
Abstract: (57)【要約】
多数個取りバルブゲート式三層射出成形方法で、バリヤ材料（１２７）の中間層（１３４）を、PETタイプの材料（１１９）の内側層（１２８）と外側層（１３０）との間に有する、容器やプリフォームを形成する。バリヤ材料（１２７）は、各加熱ノズル（４２）の環状通路（７４）を通って射出され、それと同時に、PETタイプの材料（１１９）は、各バルブピン（８４）の中央溶融物ボア（１００）を通って射出される。これによって、サイクル時間を減らし、PETの内側層を厚くすることができた。
Patent JP-2002530018-A (JP)
Title: 双方向情報表示画面を有する番組ガイド
IPC: H04H20/00
Filed: 1999-11-12
Abstract: (57)【要約】
双方向情報表示画面を有する双方向テレビ番組ガイドが提供される。項目を選択することによって、双方向情報表示画面にアクセスすることができる。双方向情報表示画面は、選択された項目またはパッケージに関する詳細な情報を含み得、ユーザ選択可能なオプションを含み得る。ユーザ選択可能なオプションは、選択された番組に対する特定の関連で用いられるように構成されている番組ガイド機能であり得る。表示されるユーザ選択可能なオプションは、どの番組ガイド機能が選択された項目に対する特定の関連で用いられるのに利用可能であるかに依存し、かつ選択された項目に関連する情報に依存する。
Patent JP-2002532328-A (JP)
Title: 高い耐磨耗性を備える車両用タイヤおよび前記タイヤを製造するための加硫可能なゴム組成物
IPC: C08K3/36
Filed: 1999-12-20
Abstract: (57)【要約】
ａ）加硫された高分子主成分中に分散された少なくとも１つの補強充填材と、ｂ）トレッド（９）総重量に基づいて０．５〜１．８重量％の量の、少なくとも２つの硫黄原子に結合した少なくとも１つの炭素原子を含む少なくとも１つの加硫促進剤の抽出可能な残留物と、ｃ）トレッド（９）総重量に基づいて２重量％以下の量の、酸化亜鉛の等価物で表される少なくとも１つの活性剤と、ｄ）トレッド（９）総重量に基づいて２．５重量％未満の量の結合硫黄とを含む、加硫された高分子主成分からなるトレッド（９）を備える車両用タイヤ（１）が説明される。有利なことに、前記タイヤは、同じように使用する周知のタイヤに匹敵するウエットスキッド抵抗と、場合によっては転がり抵抗とを有するとともに、改善した耐磨耗性を有する。
Patent JP-2002533253-A (JP)
Title: ウインドコントロール装置
IPC: E05F15/16
Filed: 1999-12-23
Abstract: (57)【要約】
少なくとも１つのオペレータアクチュエータおよびハウジングを含むウインドコントロールシステムである。オペレータアクチュエータは、ハウジング内に取り付けられてハウジング内で移動可能であり、オペレータアクチュエータのハウジング内における相対位置が、位置コマンド信号を、位置コマンドに応答してウインドを移動させるためのウインドコントロール回路に対して発生する。
Patent JP-2002535693-A (JP)
Title: 光学部品保持箱
IPC: G02B6/38
Filed: 1999-12-15
Abstract: (57)【要約】
光学部品（５０）の層を受容する上面を有すると共に光ファイバデバイス（５０）に取付可能なベース（５８）を有する、光学部品（５０）を保持するための箱（４８）。光学部品（５０）の層の上で、把持バー（６６）がベース（５８）に取り付けられ、光学部品（５０）の光ファイバリードが、箱の両端部から接続のために外方に延出した状態で、光学部品（５０）の層が所定位置に保持される。
Patent JP-2002536878-A (JP)
Title: 装置独立メッセージ通知の装置及び方法
IPC: G06F13/00
Filed: 2000-01-21
Abstract: (57)【要約】
メッセージを生成する装置のタイプに関わり無く、選択されるメッセージが受信されるとユーザに警告する装置及び方法が、提供される。メッセージを生成する装置としては、（電話、ファックス機などの）電話方式装置、若しくはコンピュータやＰＤＡ（４０４）のようなデータ装置が含まれる。ウエブサーバ（４２２）へ配布するため、全てのメッセージはデータネットワーク（４１８）と互換可能なフォーマットに変換される。ウエブサーバは、メッセージ警告タイプ選択部と到来メッセージフィルタ部とを備えるメッセージ通知システム（４３２）を含む。ユーザは、コンピュータから或いは電話から、自らが警告を受けたい対象のメッセージタイプを指定し、警告を受けるべき一つ又はそれ以上の装置タイプ（電子メールアドレス、ファックス機、ページャ番号、若しくは電話番号）を指定する。メッセージがウエブサーバに受信されると、メッセージタイプにより識別され、ユーザ定義の基準に従ってフィルタ掛けされる。選択されたメッセージにより、メッセージ警告が、ユーザ構成装置に対し生成される。
Patent JP-2002536577-A (JP)
Title: バンパ構造を含む硬質壁ファンケース
IPC: F04D29/52
Filed: 2000-02-02
Abstract: (57)【要約】
ガスタービンエンジンの前方ファン（２）の径方向周辺部を囲む硬質壁ファンケース（１）であって、このファンケースは、剛性の硬質壁前方セクション（１５）を含むとともに摩耗性材料の前方層（１６）でコーティングされた剛性の環状シェル（１４）を有する。前方セクション（１５）は、バードストライク時に偏移するファンブレード（５）の径方向移動を制限する硬質壁として機能し、これによりファン先端部（９）クリアランスを許容限度内に維持する。剛性シェル（１４）の後方セクション（１７）と空気流路面（１８）との間には凹部があり、この凹部は、径方向に推進されるブレード（５）破断片の衝撃を吸収するとともに、この破片を所定の状況で保持することができる。剛性シェル（１４）は、前方および後方のセクション（１５，１４）の間に新規の剛性バンパ（２１）を含み、この剛性バンパ（２１）は、ファンブレードの重心（６）からオフセット距離だけ前方に設けられた剛性の後方端部（２２）を含む。
Patent JP-2002539927-A (JP)
IPC: C25B1/24
Filed: 2000-03-24
Abstract: A process for removing nitrate ions from an aqueous solution thereof which comprises passing the solution through an electrochemical cell comprising at least one anode and at least one cathode and passing a current therebetween, wherein the cathode surface (s) comprise rhodium metal.
Patent JP-2002543587-A (JP)
Title: オン抵抗が低減されたスーパー自己整列トレンチｄｍｏｓｆｅｔ
IPC: H01L29/739
Filed: 2000-04-21
Abstract: (57)【要約】
新規なスーパー自己整列（ＳＳＡ）構造及び製造方法は、単一のフォトマスキング層を用いてトレンチゲート型バーティカルパワーＤＭＯＳＦＥＴの主要なフィーチャー及び寸法を決定する。この単一のクリティカルマスクはトレンチ表面寸法、トレンチ間のシリコンソース−ボディメサ幅、及びシリコンメサコンタクトの寸法及び位置を決定する。コンタクトはトレンチに自己整列され、プロセスに由来するゲート−ソース短絡を避けるのに必要とされていた従来のトレンチＤＭＯＳデバイスにおけるコンタクト−トレンチマスク整列によって受ける制約をなくしている。シリコン表面より上の酸化物のステップ高さも低減され、金属ステップカバレージ問題を回避している。ポリゲートステップの高さも減じられた。開示された他の特徴としては、ポリシリコンの形成、ドレイン−ボディダイオードブレークダウンの位置の制御、減少したゲート−ドレインオーバーラップキャパシタンス及び低熱収支処理技術が含まれる。
Patent JP-2002201228-A (JP)
Title: Methacrylic copolymer and its production method, plastic optical fiber, plastic optical fiber cable, and plastic optical fiber cable with plug
Inventor: OKUTSU HAJIME
IPC: C08F2/06
Filed: 2001-01-09
Abstract: PROBLEM TO BE SOLVED: To stably and easily produce a methacrylic copolymer which is suitable as a core material of a plastic optical fiber and has a high refractive index and excellent optical characteristics while inhibiting the change in copolymer composition. SOLUTION: In producing a copolymer of methyl methacrylate and benzyl methacrylate, raw materials including a monomer mixture comprising 0.1-99.9 mass% methyl methacrylate and 0.1-99.9 mass% benzyl methacrylate (the total amount of monomers being 100 mass%) and a free-radical polymerization initiator and if necessary further including a solvent are subjected to bulk polymerization or solution polymerization at 120-170 deg.C to give a copolymer composition having a copolymer content of 30-70 mass%; then, volatile components are separated and removed from the copolymer composition.
Patent JP-2002205842-A (JP)
Title: Sheet feeder and recording device
Inventor: KAYANO NORIYUKI
IPC: B65H5/00
Filed: 2001-01-10
Abstract: PROBLEM TO BE SOLVED: To improve the durability of a feeder brush by reducing noise generated in power feeding and relieving shock in power feeding. SOLUTION: A feed part for feeding power to an endless feed belt 31 to attract a sheet to the surface of the belt 31 and feed it on has a power feeding means F having a plurality of feeder members capable of feeding power to the feed belt 31 with power-fed parts and lining in a feed direction, and a control part 80 for controlling a voltage value fed to the power-fed parts of the feed belt 31 from the plurality of feeder members of the power feeding means F.  The most upstream feeder member (feeder electrode 52a and feeder brush 51) in the power feeding means F along the feed direction, after brought in contact with the power-fed part of the feed belt 31, increases the voltage gradually from a second voltage value (0 kV) lower than a first voltage value (3.0 kV) for attracting the sheet to the feed belt 31, and boosts this voltage up to the first voltage value (3.0 kV) before separated from the power-fed part.
Patent JP-2002205374-A (JP)
Title: Printing machine
Inventor: YAMADA SEIJI
IPC: B41F31/02
Filed: 2001-01-10
Abstract: PROBLEM TO BE SOLVED: To suppress color mixing by a compact constitution and obtain good color reproducibility. SOLUTION: Plate drums A, B, C and D are provided around an intermediate transfer drum 2 and ink images are sequentially transferred onto the drums A, B, C and D. The ink images superposed on the drum 2 are batch transferred onto a printing sheet by a transfer roller 14. A reference numeral 44 denotes a cooling means 44 as an ink viscosity stepwisely differentiating means for enhancing a viscosity oft the ink transferred to the drum, by lowering a temperature of the drum 2 as compared with that of the ink when the image is existed on the drum. The means 44 has a compressor 46 and a cooling fluid channel 48.
Patent JP-2001232488-A (JP)
Title: Method and device for laser cutting mild steel or steel for structual purpose by multiple-focus optical apparatus
Inventor: BERTEZ CHRISTOPHE
IPC: B23K26/12
Filed: 2001-01-10
Abstract: PROBLEM TO BE SOLVED: To improve a method for cutting an alloy or non-alloy steel by laser beams. SOLUTION: In the method and device for cutting a workpiece made of steel for structual purpose or mild steel, that is, alloy or non-alloy steel by the use of a transparent or reflecting optical means for forming the laser beams into a focus and an auxiliary gas for the laser beams, the optical means is a multiple-focus type and is selected from a lens, a mirror and a combination thereof. The auxiliary gas consists of nitrogen or a nitrogen/oxygen mixture. Little or almost zero oxidation is possible in the cut surface, and cutting performance in this method is improved by nearly 40% compared with that of a laser cutting method using nitrogen or a nitrogen/oxygen mixture.
Patent JP-2002208076-A (JP)
Title: Disaster prevention ganged control system
Inventor: UEDA TAMOTSU
IPC: H04Q9/00
Filed: 2001-01-11
Abstract: PROBLEM TO BE SOLVED: To provide a disaster prevention ganged control system by which normal transmission is performed without being short-circuited even when core wire is exposed and brought into contact by breakage of cover of a transmission line and a power line when the lines are bundled together. SOLUTION: The disaster prevented ganged control system 1 is provided with a disaster prevention ganged control panel 3, a plurality of repeaters 7a, 7b, 7c to individually control a plurality of pieces of equipment 5a, 5b, 5c to be controlled according to a control instruction from the disaster prevention ganged control panel 3. Power sources of the repeaters 7a, 7b, 7c are made independent by every repeater at an electrically insulated states and the respective repeaters 7a (7b, 7c) are constituted by electrically insulating a control circuit part 71 to receive supply of direct currents from DC-DC converters 17a (17b, 17c) and to control the equipment 5a (5b, 5c) to be controlled from a transmission circuit part 75 to receive the control instruction from the disaster prevention ganged control panel 3 and to control the control circuit part 71.
Patent JP-2002209393-A (JP)
Title: Fan motor drive circuit
Inventor: ITO ATSUSHI
IPC: H02P29/00
Filed: 2001-01-11
Abstract: PROBLEM TO BE SOLVED: To smoothly and surely start a fan motor and rotate it at a low speed in a steady operating state using a simple constitution. SOLUTION: A fan motor drive circuit is provided with a regulator circuit 11 connected to a direct-current power supply 20; a resistance-type voltage division circuit 12 that divides an output voltage Vout of the regulator circuit 11 by resistance and feeds it back to the reference voltage terminal Vref of the regulator circuit 11; a time constant circuit 13 connected with the reference voltage terminal Vref; and a series circuit 14 comprising a resistor 14A and a switching element 14B connected in series with the time constant circuit 13. The output voltage Vout of the regulator circuit 11 is increased at start, only for a certain time interval according to the time constant by the time constant circuit 13.
Patent JP-2002211979-A (JP)
Title: Member made of glasslike carbon for protecting inner wall of chamber
Inventor: KOKAJI KAZUMI
IPC: H01L21/302
Filed: 2001-01-12
Abstract: PROBLEM TO BE SOLVED: To provide a chamber liner made of glasslike carbon, which does not generate metal pollutants or particles when it is consumed by plasma, has functions being required for the glassy carbon chamber liner, can be relatively easily formed into a cylindrical form having a high circularity, and is expected to exhibit such an anchor effect that reaction products stuck on its surface part are allowed to stick and fix on the surface. SOLUTION: In the chamber liner used in a plasma etching device, the chamber liner is made of glasslike carbon and characterized in that the surface roughness of a part exposed to plasma is >=3 μm.
Patent JP-2002214257-A (JP)
Title: Electronic type watt meter
Inventor: NISHIHARA RYUTARO
IPC: G01R22/00
Filed: 2001-01-16
Abstract: PROBLEM TO BE SOLVED: To provide an electronic type watt meter which enables preserving and displaying of integrated values after the inspection thereof without any power source and also displaying of the integrated values after the service in the case of a power failure. SOLUTION: A microcomputer 11 built into an electronic type watt meter 1 is provided with an electrically reloadable type non-volatile memory 24 and a read only power source circuit 10 for data preserved therein. The read only power source circuit 10 comprises a primary battery 13 and a normally opened type magnetosensitive switch 19. When the power source of the watt meter 1 is turned off, measurement data of a volatile memory 17 are stored into the non-volatile memory 24 and when the magnetosensitive switch 19 is turned on during the off period of the power source, the measurement data preserved in the non-volatile memory 24 are shown on a display part 5 for a fixed space of time.
Patent JP-2002210579-A (JP)
Title: Ripple-oscillated yag laser beam device and equipment for welding thin steel plate using the same
Inventor: MINAMIDA KATSUHIRO
IPC: B23K26/06
Filed: 2001-01-16
Abstract: PROBLEM TO BE SOLVED: To provide a device with which a ripple-oscillated laser beam is obtained by efficiently coaxially synthesizing a pulse-oscillation YAG laser beam and a continuous-wave oscillation YAG laser beam, and to provide equipment for laser beam welding with which a setting accuracy of a butting gap for preventing the generation of a burn through or a humping in a butt welding of thin steel plates is remarkably relaxed. SOLUTION: Either a YAG laser beam unit which generates a conventional solid laser beam or a YAG laser beam unit which generates a hollow laser beam which has a spatial distribution in reflectivity of a partially transparent mirror is set at a continuous oscillation and the other is set at a pulse oscillation. A ripple waveform is realized at a high efficiency by coaxially synthesizing these laser beams with a beam coupler which has a prescribed aperture. Further, as a ripple condition, the ratio of a mean output of the pulse component to a total output is set at a prescribed value and applied to a butt welding of the thin steel plates.
Patent JP-2002210325-A (JP)
Title: Membrane type biological deodorization tower and operation method
Inventor: YAMAMOTO TETSUYA
IPC: B01D53/77
Filed: 2001-01-23
Abstract: PROBLEM TO BE SOLVED: To provide a membrane type biological deodorization tower capable of assuring a sufficient contact time between an object gas and microorganism, maintaining the concentration of specified microorganism, and preventing a trouble of the clogging of a filler. SOLUTION: The membrane type biological deodorization tower comprises a filler 4 set between a spraying nozzle 2 for spraying the microorganism suspension and a microorganism suspension storage part 3 so as to pass a high concentration microorganism suspension sprayed out of the spraying nozzle 2 downward along the surface, a gas supply system 8 for supplying a raw gas upward to the filler 4 to the upper side from the lower side, a suspension supply system 6 for circulating and supplying the microorganism suspension of the storage part 3 to the spraying nozzle 2, a membrane apparatus 10 for filtering the suspension of the storage part 3 to increase the microorganism concentration in the suspension, an excess sludge discharge system 12 for discharging excess sludge in the storage part 3,  a blow water supply system 14 communicating with the storage part 3 for supplying supplementary water, and a gas discharge system 8 communicating with the upper part of the tower for discharging the treated gas.
Patent JP-2002221442-A (JP)
Title: System for estimating weight of vehicle
Inventor: YAMADA NAOKI
IPC: G01G19/03
Filed: 2001-01-24
Abstract: PROBLEM TO BE SOLVED: To accurately estimate the weight of a vehicle. SOLUTION: The system for estimating weight of vehicle, which is composed of an acceleration detecting means that detects the acceleration of the vehicle, a driving force estimating means that estimates the driving force of the vehicle, and a vehicle weight estimating means that estimates the weight of the vehicle on the basis of the detected acceleration and the estimated driving force, includes a slope run judging means that judges whether the vehicle runs on a sloping road or not on the basis of the relationship between a moment when instructions are transmitted in order to increase the torque generated by an engine and another moment when the velocity of the vehicle exceeds a determined value,  and an estimation invalidating means that invalidates the estimation of weight of the vehicle estimated by the vehicle weight estimating means in the case such a judgement that the vehicle runs on the sloping road is made. Thereby, the estimation of the weight of vehicle using the driving force estimated with poor accuracy on the sloping road is not carried out. As a result, the accuracy of estimation of the weight of vehicle is improved.
Patent JP-2001205754-A (JP)
Title: Thermoformable multilayered film for protecting base material and article obtained therefrom
Inventor: SILAGY DAVID
IPC: C08J5/18
Filed: 2001-01-25
Abstract: PROBLEM TO BE SOLVED: To provide a thermoformable multilayered film for protecting a base material. SOLUTION: The thermoformable multilayered film for protecting the base material has (1) a protective layer (A), (2) a transparent layer (B) consisting of 0-100 weight % of a fluoropolymer (B1) and 100-0 weight %of a polymer (B2) based on an alkyl (meth)acrylate unit (sum total; 100 weight %), (3) a layer (C) based on polyamide having an amine terminal group, (4) a layer (D) comprising polyolefin functionalized by an unsaturated anhydrous carboxylic acid and (5) a bonding layer (E) comprising polyolefin in this order. This film is obtained by the co-extrusion of the respective layers. The multilayered film is put on the bottom of an injection mold so that the layer (A) comes into contact with the wall of the mold and the molten base material is injection- molded on the multilayered film to be coated with the multilayered film.
Patent JP-2002223202-A (JP)
Title: Method of transmitting data and transmitter using it
Inventor: TAKAGI YOSHINOBU
IPC: H04L13/08
Filed: 2001-01-26
Abstract: PROBLEM TO BE SOLVED: To provide a method of transmitting data by which the risk of input data being destroyed due to processing stagnation or an overflow in a buffer and the risk of data transmitting order of a plurality of systems being changed can be reduced, and to provide a router using the method. SOLUTION: In the method of transmitting data, data from a plurality of input ports are stored in a vacant buffer of a plurality of buffers by selectively controlling a switch section connecting an input port section having the plurality of input ports to an output window section having the plurality of buffers in accordance with the data storing states of the buffers, and the data read out from the plurality of buffers are transmitted in a time sharing state. Consequently, the risk of inputted data being destroyed due to the processing stagnation or overflow in the buffer and the risk of the data transmitting order of the plurality of systems being changed can be reduced and the data enter into the vacant buffer from the input ports. Therefore, it becomes unnecessary to identify the head end section of the data and no useless buffer area is produced in an output port.  In addition, delays can be reduced without requiring any complicated processing.
Patent JP-2002230459-A (JP)
Title: System and method for on-line registration of electronic- money handling participating store
Inventor: KAWASAKI HIROSHI
IPC: G06Q10/00
Filed: 2001-01-30
Abstract: PROBLEM TO BE SOLVED: To save the cost and time to open a virtual store over a network, through which settlements can be made with electronic money and to increase conveniences to participating stores by registering the member stores to an electronic money settling institution over the network. SOLUTION: This system comprises a 1st information processor, equipped with a means for storing electronic money and a means for storing the use state of an electronic money storage means and a 2nd information processor which inputs information about stores, having dealings using electronic money; and the 2nd information processor sends the inputted store information to the 1st information processor, and this processor automatically allocates the electronic money storage means that the store indicated with the received store information can use, when it has dealings with the store, according to the state of the electronic money storage means.
Patent JP-2002229782-A (JP)
Title: Application program developing system for handy terminal
Inventor: NAKAHARA JUN
IPC: G06F9/44
Filed: 2001-01-30
Abstract: PROBLEM TO BE SOLVED: To facilitate program development by dispensing with the complicated work such as the relearning of statements utilized for each language at the development of an application program for a handy terminal. SOLUTION: Source statements for various compilers in the specified order are generated by specifying the various functions to be executed by the handy terminal with a cursor or the like on a handy terminal screen displayed on a host computer in an application program developing system for the handy terminal.
Patent JP-2002223793-A (JP)
Title: Method for controlling catalytic activity
Inventor: FURUKAWA HIROTAKA
IPC: C12N11/02
Filed: 2001-01-31
Abstract: PROBLEM TO BE SOLVED: To provide a method for simply controlling catalytic activity, which is usable for various kinds of bioreactors, sensors, etc. SOLUTION: This method for controlling catalytic activity comprises immobilizing each at least one kind of catalyst to at least two kinds of polymers which are different in response to a stimulus and controlling the catalytic activity by utilizing the difference of response of at least two kinds of polymers to stimulus.
Patent JP-2002224535-A (JP)
Title: Method and apparatus for treating gas containing fluorocompound and carbon monoxide
Inventor: MORI YOICHI
IPC: B01J21/04
Filed: 2001-02-02
Abstract: PROBLEM TO BE SOLVED: To provide a method and apparatus for efficiently treating a gas which contains a fluorocompound and carbon monoxide and is discharged e.g. in the step of dry cleaning the inside surface of a semiconductor production apparatus in the semiconductor industry or in the step of etching various formed films such as an oxide film. SOLUTION: This method, for treating a gas containing a fluorocompound and carbon monoxide, contains the step of contacting the gas with O2 and H2O at 850 deg.C or higher to oxidize CO to CO2 and the step of contacting the treated gas with γ-alumina at 600-900 deg.C to decompose the fluorocompound.
Patent JP-2002227569-A (JP)
Title: Electric opening and closing device for architecture
Inventor: NAKATSUKA WATARU
IPC: H02K7/10
Filed: 2001-02-02
Abstract: PROBLEM TO BE SOLVED: To compact a drive device and a shutter case in an electric opening and closing device for architecture. SOLUTION: The drive device 4 consists of a motor part M and a deceleration part D provided with an output shaft 15 extending orthogonally to an armature shaft 11a in the motor part M, the extension direction of the output shaft 15 is an opposing direction of a flat part 9b formed in a yoke 9 in the motor part M, and the flat part 9b is arranged along a left side bracket 6 to make the drive device 4 attached to the left side bracket 7 thin.
Patent JP-2002225101-A (JP)
Title: Motor-operated mold opening/closing apparatus
Inventor: FUJITA SABURO
IPC: B29C45/66
Filed: 2001-02-02
Abstract: PROBLEM TO BE SOLVED: To provide a motor-operated mold opening/closing apparatus having a mounting constitution for simplifying a ball screw type feeding mechanism for advancing or retracting a movable die plate toward or from a fixed die plate, eliminating necessity of synchronously controlling a rotational speed and a rotational position of the ball screw shaft, and capable of absorbing an impact load without operating a contact on one side or a bending force in combination of the ball screw shaft and a ball screw nut. SOLUTION: The motor-operated mold opening/closing apparatus comprises a means for advancing or retracting the movable die plate toward or from the fixed die plate having a moving base including slide units mounted at both sides of a lower surface to mount the movable die plate on an upper surfacer, a pair of track rails laid on this apparatus base engaged with the slide unit to form a linear guide, the ball screw shaft supported in parallel with the rail via a bearing fixed to the base to be rotatably axially restricted, a servo motor for driving the ball screw shaft, and the ball screw nut engaged with the ball screw shaft and mounted on the lower surface of the base. The ball screw shaft and the ball screw nut are installed at arbitrary positions between the track rails of the pair of linear guides.