baber/WOPTO huggingface dataset:
Patent JP-S63188967-A (JP)
Title: Bipolar transistor and manufacture thereof
Inventor: IKEDA TATSUHIKO
IPC: H01L29/732
Filed: 1987-01-30
Abstract: PURPOSE:To lessen both parasitic capacitance and resistance at an inactive base region by forming the surface of an inactive base layer with silicide having low resistance and by causing a part just below the above base layer to be insulated as well. CONSTITUTION:A silicide layer 61 is formed at the upper side of an insulating region 51. Such a configuration flows an inactive base layer region to include a low resistance silicide layer 61 and then a small number of carriers in the active base region 6 can be moved to a base interconnection mainframe 10 at extremely great speed. As a result, a bipolar transistor is able to cope with a high frequency operation and a layer below the silicide layer 61 is composed of the insulating region 51 and is constructed so that pn junctions may not be formed between an epitaxial layer 3 and the region 51. Thus such a structure reduces capacitance at a junction part and lowers its impedance.
Patent JP-H08213150-A (JP)
Title: Manufacture of composite electrode for spark plug
Inventor: ANDO MINORU
IPC: H01T13/22
Filed: 1995-02-08
Abstract: PURPOSE: To restrain the increase of manufacturing cost by forming the small diameter section of the composite center electrode of a multipolar spark plug without a cutting process and preventing the occurrence of a nonconforming product, with a formation time reduced for the small diameter section. CONSTITUTION: A copper core is tightly coupled to the inside of a nickel alloy billet to form the first composite material 18, and this material 18 is forward extruded, thereby preparing the second composite material 25 having an axial section 22 of d1 outer diameter. Then, the composite material 25 is forward extruded to form the third and stepped composite material 28 forward of the section 22 in such a state as having a small diameter section 29 of d3 outer diameter. Furthermore, the material 28 is extrusion molded to form the fourth composite material 32 having a medium diameter section 33 of d2 outer diameter between the axial section 22 and the small diameter section 29, thereby forming a composite center electrode. As a result, the small diameter section 29 of the composite center electrode can be formed without any cutting process, and various types of nonconformities due to a cutting process can be avoided.
Patent JP-H05214516-A (JP)
Title: Manufacture of thin metallic film excellent in transferability
Inventor: KUBODERA NORIYUKI
IPC: C23C14/22
Filed: 1992-02-06
Abstract: PURPOSE:To provide a thin metallic film excellent in transferability for the purpose of easily forming, e.g. an inside electrode in a laminated ceramic capacitor by a transferring technology for thin metallic films. CONSTITUTION:A crucible 5 made of alumina in which a bottom wall 3 is provided with a hole 4 is placed on a water-cooled metallic table 7. Copper 6 melted in the crucible 5 is brought into contact with the metallic table 7 in the hole 4 to form a solidified area and to prevent the leakage of the melted copper 6. The copper 6 melted in the crucible 5 is grounded through the hole 4, and its electrification is prevented. At the time of irradiating electron beams in this state, the scattering of the electron beams is suppressed, by which the reduction of adsorbed gas on the surface of the substrate caused by the bombardment of the scattered electrons with a substrate can be prevented. Thus, the adhesive strength between the vapor-deposited film and the substrate is suppressed.
Patent JP-H04259419-A (JP)
Title: Coffee extractor
Inventor: OYABU HAJIME
IPC: A47J31/10
Filed: 1991-02-14
Abstract: PURPOSE:To provide a coffee extractor capable of adjusting the concentration of coffee to a set value. CONSTITUTION:A coffee extractor has a handling portion 14 by which a user sets the concentration of coffee extract, a heater 9 which functions in relation to the handling portion 14, a concentration sensor 12 for detecting information on the concentration of coffee extract and a control portion 13 which computes this information to find the concentration and to control the concentration to a value set by the handling portion 14. The coffee extractor capable of adjusting the concentration of coffee is thus provided.
Patent JP-H05219713-A (JP)
Title: Stepping motor
Inventor: OSHIMI AKIRA
IPC: H02K37/14
Filed: 1992-02-06
Abstract: PURPOSE:To supply a stepping motor which can be step-driven stably even if voltage to be supplied to the exciting winding of stator changes. CONSTITUTION:A reed switch 4 on a circuit board 3 is mounted to a stator 1 and read switch-operating magnets are arranged on a rotor 9 supported by tone stator 1 through bearings 2. When electric current is caused to flow through the windings 7 of magnetic bodies contained in the stator 1 to drive the rotor 9, the switch 4 is OFF between the two magnetic bodies 6 by the magnetic force of the magnets 5 but the rotor 9 moves to the next step by inertia.
Patent JP-H09215287-A (JP)
Title: Induction motor
Inventor: KIKUCHI SATOSHI
IPC: H02K17/16
Filed: 1996-02-07
Abstract: PROBLEM TO BE SOLVED: To reduce the number of part items to reduce costs by providing a plurality of thin grooves which are not projected into the outer circumferential surface of a rotor in the upper part of the slot of a rotor iron core and providing a slit in the upper part of a slot by cutting the outer circumference of the rotor after die-cast with aluminum. SOLUTION: When a slot 3 into which a bar 4 is inserted is provided in a rotor iron core 2 and two thin grooves 10 comprising 10A and 10B which are not projected outside the rotor iron core 2 are provided in the upper part of the slot 3, a projecting part 11 facing the axial side is inevitably formed. Namely, the rotor iron core 2 is die-cast with aluminum to form the bar 4 and an end ring. When the circumference of the rotor is cut as far as the two grooves, the projecting part 11 interposed between the two thin grooves 10 is freed and can be removed at the time of cutting work, so that a slit in which aluminum is not made to flow may be formed in the upper part of the slot 3.
Patent JP-S62178737-A (JP)
Title: Air-intake device for engine
Inventor: NAKASUMI TADATAKA
IPC: F02D33/00
Filed: 1986-02-01
Abstract: PURPOSE:To enable control of leaning in a specified operation region, by a method wherein a control valve is actuated by means of a composite negative pressure of negative pressures introduced from the upper stream side and the downstream side of a throttle valve to open a bypass passage. CONSTITUTION:To the extent of the relatively low first given opening of a throttle valve, the negative pressure of an intake air pipe is introduced only through a port 13 on the downstream side, but when the opening of the throttle valve 6 exceeds the first given opening, a port 12 on the upper stream side is also positioned on the downstream side of the throttle valve 6 to introduce the negative pressure of the intake air pipe to two ports 12 and 13. thus, when the throttle valve 6 is in an intermediate opening region between the first given opening and a second given opening, further opened than the first given opening, a composite negative pressure is generated. In this region, a control valve 9 in a bypass passage 8 is opened, and as a result, in the middle load region of an engine, intake air through the bypass passage 8 is additionally fed in addition to intake air through an intake air passage 4.
Patent JP-H03225610-A (JP)
Title: Thin-film magnetic head
Inventor: WATANABE TAKASHI
IPC: G11B5/31
Filed: 1990-01-31
Abstract: PURPOSE:To obtain many reproduced outputs by constituting the thin-film magnetic head which has two back gap parts and is wound plural times with spiral type coils respectively continuously around the two back gap parts. CONSTITUTION:The spiral type coils 4 are wound respectively around the two back gap parts 2a, 2b. The coils 4 are wound in single layer or in multiple layers of >=2 layers. The winding is executed in the direction clockwise from one terminal 5, as shown in Fig. After the coil is wound around the one back gap part 2a toward the inner side thereof, the coil is led out to an external contact point 6 and is further wound this time counterclockwise from the contact point 6 around the other back gap part 2b toward the outer side thereof and is thereafter led out to the other terminal 7. The coils are wound respectively plural times around the two back gap parts 2a, 2b in such a manner and, therefore, the coils are substantially one coil 4 but are flatly two pieces of the coils 4a, 4b. The number of turns of the coil 4 is thus increased double-fold without changing the above-mentioned path length L. The many reproduced outputs are obtd. by meeting the number of the turns.
Patent JP-H07230909-A (JP)
Title: Manganese-zinc ferrite core and its manufacture
Inventor: YAMAZAKI TSUNEHIRO
IPC: H01F41/02
Filed: 1994-02-18
Abstract: PURPOSE:To provide a low-loss manganese-zinc ferrite core having high permeability and high resistance, and its manufacturing method. CONSTITUTION:This core is made up of a material having a main component composed of 45-48.6mol% of Fe2O3, Mn2O3 of a molar ratio whose sum with the mole percentage of Fe2O3 is approximately 50mol%, 28-50mol% of MnO, and the remaining ZnO, and 0.01-0.5wt.% of a subcomponent including SiO2 and CaO, and Fe<2+> is less than 1mol% (other than 0mol%). By making the sum of Fe2O3 and Mn2O3 approximately 50mol% in spite of Fe2O3<50mol%, perfect spinel structure can be adopted and it is beneficial to the magnetic characteristic. By selecting sintering conditions, the production of Fe<2+> in a sintering process is lessened, and Mn<3+> of an Mn component supplementing the shortage of Fe2O3 in place of Fe<2+>, and consequently the production of Fe<2+> is suppressed. And it becomes possible to make the resistance higher by bringing in the grain boundary high-resistance phases of SiO2 and CaO.
Patent JP-H03225650-A (JP)
Title: Optical disk system
Inventor: WATANABE SATORU
IPC: G11B7/24
Filed: 1990-01-31
Abstract: PURPOSE:To accomplish recording and reproducing with high density by specifying the thickness of a light transmissive cover and the numerical aperture of an objective lens in an optical disk system where a laser beam is condensed on a recording layer through the light transmissive cover. CONSTITUTION:The magneto-optical disk system is provided with the objective lens 2 whose numerical aperture(NA) is set to be 0.55-0.70 and a magnetic field generating device 9 in a magnetic field modulation system consisting of an optical glass 8 where a coil pattern 7 is formed. A magneto-optical recording medium 40 is constituted by successively laminating a dielectric layer 42, a recording magnetic layer 43, a dielectric layer 44, a reflection film 45 and a protective cover 46 on the light transmissive cover 41 whose thickness is 0.01-0.6 mm. Thus, since the thickness of the cover 41 is made thin and the pattern 7 approaches to the cover 41, a distance between the pattern 7 and the layer 43 is mad close. Therefore, high-density recording/reproducing is accomplished and the capacity is made large.
Patent JP-S57153293-A (JP)
Title: Apparatus for correcting time display information of electronic wrist watch
Inventor: OREERU MEERU
IPC: G04G5/00
Filed: 1982-02-15
Abstract: The correction device of the invention makes it possible to activate, in the same axial position of the crown, two different modes of correction of the data displayed by the watch, it being possible to make those corrections in both directions, depending on the direction of rotation of the crown. The second correction mode is activated only after a reversal of direction of the correction made according to the first mode. This device contains, notably, memory means 11, 12, associated with each direction of rotation of the crown, and selection means 21, 31, 22, 32, for choosing the mode and the direction of correction activated in accordance with the direction of rotation of the crown, on the one hand, and a possible reversal of that direction, on the other.
Patent JP-H03227768-A (JP)
Title: Electrically driven power steering apparatus
Inventor: TSUDA KAZUMI
IPC: B62D6/00
Filed: 1990-01-31
Abstract: PURPOSE:To eliminate heavy movement of a steering wheel when it starts to turn at low speed by taking a factor of vehicle speed not only into assist current but also into differential compensation current and decreasing the differential compensation current smaller as the speed rises. CONSTITUTION:In a controller 30 for controlling power supply to an electric motor 7 for rotating a pinion engaged with a rack of a steering mechanism, an assist current determination circuit 31 and a differential compensation circuit 32 which receive output signals of a vehicle speed sensor 14 and a torque sensor 15 respectively are provided. According to an assist signal SA for obtaining assist current which increases with an increase in a steering torque and decreases with an increase in vehicle speed and a differential coefficient which is set so that it gradually decreases as the vehicle speed increases, the steering torque and a differential compensation signal so for obtaining differential compensation current according to the vehicle speed are output. After both signals SA,SD are summed 34, they are input to a motor driving circuit 33 to be applied to a motor 7 as driving current.
Patent JP-H07230253-A (JP)
Title: Plane display device and plane display system
Inventor: TANAKA SHOSUKE
IPC: G09F9/37
Filed: 1994-02-18
Abstract: PURPOSE:To save the electric power even if a plane display device is enlarged in size and to obtain an image having high quality even in the day time by controlling an x-y matrix sheet for changing the magnetic field at the intersection point of an x-y matrix according to an input image signal, a memory chip sheet storing the change of the magnetic field, and a magnetic display sheet for displaying the image corresponding to the stored change of the magnetic field at the intersecting point. CONSTITUTION:This plane display device 21 has a three-layered structure consisting of a memory chip sheet 22, a x-y matrix sheet 15 tightly adhered to this memory chip 22 so as to hold the memory chip sheet pinching it and a magnetic display sheet 23. The x-y matrix sheet 15 specifies one point of the screen corresponding to the input image signal by changing the magnetic field at the intersecting point of the x-y matrix. The memory chip sheet 22 stores the intersecting point specified by the x-y matrix sheet 15 by making this point corresponding to the change in the direction of magnetization. The magnetic display sheet 23 display the image corresponding to the specific point stored by the memory chip sheet 22.
Patent JP-H11219923-A (JP)
Title: Semiconductor wafer and manufacture of the same, and manufacture of semiconductor device
Inventor: NAITO SHINJI
IPC: H01L21/304
Filed: 1998-02-03
Abstract: PROBLEM TO BE SOLVED: To reduce sticking foreign matter amounts due to dust emitted from a semiconductor wafer itself. SOLUTION: An element formation surface 2 is subjected to a mirror surface grinding working, and the relation between a chambering size L1 at the element formation face 2 side and a chamfering size L2 at a back face 3 side with a vertex 4a of a chamfering working part 4 as a reference is set L1>=L2. When L1=L2, chipping against a jig or the like under the assumption that the chamfering working part 4 is shaped symmetrically with respect to a thickness direction can be prevented, and generation of foreign matters can be reduced. Also when L1>L2, foreign matters generated from the semiconductor wafer 1 due to chipping against the jig or the like of the chambering working part 4 are splashed and stuck to the back face 3 side opposite to the element formation face 2, so that the sticking amounts of the foreign matters on the element formation face 2 can be reduced.
Patent JP-S63192556-A (JP)
Title: Vapor type soldering device
Inventor: KIYONO NAOHARU
IPC: B23K1/015
Filed: 1987-02-03
Abstract: PURPOSE:To precisely control a soldering temp. and preheating by controlling the vertical velocity of a rail and its stoppage optionally so that a base plate on rail vertically moving between the upper part opening and lower part of a vapor tank may receive a preheating and the main heat in soldering. CONSTITUTION:A carry-in conveyor 13 carrying in a base plate is arranged on one part of the opening part of a vapor tank 11. A carry-out conveyor 14 is arranged on the other part of the opening part so as to extend the carry-in conveyor 13. The rail 13 capable of connecting the carry-in and out conveyors 13, 14 is arranged and fitted freely movably vertically to the columns 17a, 17b provided in the vertical direction of the vapor tank 11. The rail 15, therefore, moves vertically between the opening part of the vapor tank and the liquid 12 of the bottom part. The vertically driving device 18 vertically driving the rail 15 descends the rail 15 as well simultaneously with driving a belt 18a in an arrow mark direction, and is driven by the controller 19 set by a program and capable of freely setting the vertical motion velocity, stopping position, number of stoppages, etc., of the rail 15.
Patent JP-S56118112-A (JP)
Title: Response monitoring system for device
Inventor: YAMADA KIICHI
IPC: G05B23/02
Filed: 1980-02-25
Abstract: PURPOSE:To minimize the cost and computer load and to enable response monitor with high speed, by scanning and inputting the response signal in the high speed scanning time predetermined in matching with the response characteristics of devices, after the output of operation instruction. CONSTITUTION:An operation device deciding device 16 interpretes the information code inputted from a device operation panel 8 to form the operation instruction information, and registers the high speed scanning time DELTAT, objective input information for response monitoring and output instruction information in a scanning register 10. An input managing device 13 outputs the signal output instruction to an operation signal output device 12 with the start from an operation device deciding device 16 and also outputs the operation instruction information to a process device 1 via a process input and output device 5 and the high speed scanning instruction to the process signal read-in device 14 and scans the objective input information only for response monitor in high speed period DELTAT2. The change in the state of the monitor objective information inputted at a read-in device 14 is detected, then the output editer 17 is started for the output display of the response monitor to the input information.
Patent JP-S53106749-A (JP)
Title: Glass fiber reinforced polyester resin composition
Inventor: OOMURA TAKAHIRO
IPC: C08G18/42
Filed: 1977-03-01
Abstract: PURPOSE: To prepare a polyester resin composition for injector molding material having improved mechanical strength and reduced anisotropy of molding shrinkage, by compounding a polyester resin with glass fiber coated with a vinyl polymer, a crystallization accelerator and a polyfunctional compound. 
     COPYRIGHT: (C)1978,JPO&Japio
Patent JP-H0399078-A (JP)
Title: Production of substance nf-1616-904
Inventor: KITA YASUYUKI
IPC: C07D403/06
Filed: 1990-01-30
Abstract: PURPOSE:To industrially and advantageously obtain the subject compound useful for preventing and treating renal, hepatic insufficiencies, etc., by cyclizing an indole derivative, then protecting oxo group, subsequently methylating the resultant compound and removing protecting groups in the aforementioned methylated derivative. CONSTITUTION:A compound expressed by formula I (R<1> is H, lower alkoxycarbonyl, lower alkanoyl or benzoyl) is cyclized, preferably in the presence of a condensing agent, such as trimethylsilylethoxyacetylene, to provide an indole derivative expressed by formula II, which is then reacted with a compound expressed by formula III (R<5> is lower alkoxycarbonyl, etc.) in an inert solvent to protect the oxo group. The resultant compound is further reacted with diazomethane is the presence of a catalyst, such as boron tribromide, in a solvent, such as methanol, and methylated. The protecting groups in the methylated indole derivative are subsequently removed by hydrolytic and reduction treatment, etc., and the resultant compound is isolated and purified to afford the objective compound expressed by formula IV.
Patent JP-S57136380-A (JP)
Title: Gas laser oscillator
Inventor: YONEKAWA TAROU
IPC: H01S3/097
Filed: 1981-02-17
Abstract: PURPOSE:To make an oscillation warning display possible by a method wherein an end of an optical fiber bundle is placed in the vicinity of a wall of a laser tube, and another end is led outside the case of a laser oscillator, and a discharging light of the laser is transmitted outward through the fiber bundle. CONSTITUTION:On a laser tube 2 which is placed in a small sized helium neon laser oscillator 8, an end 12 of an optical fiber bundle 11 is placed to be close to a wall 13 of the laser tube 2, and another end 10 is placed outside the case 5 of the laser oscillator 8 so that it may receive a strong discharge light 9 and the light may be conducted to a surface 10 of the opposite end. If the laser tube oscillates, the discharging light 9 is emitted from the end surface 10 through the fiber 11, and a warning display on laser oscillation is done. By this method a warning display on laser oscillation is made possible cheaply and easily.
Patent JP-H11217980-A (JP)
Title: Ventilator of window
Inventor: ARITSUKA HITOSHI
IPC: E06B7/10
Filed: 1998-02-03
Abstract: PROBLEM TO BE SOLVED: To ventilate indoor side simply through a transverse member by installing a ventilating unit by forming an opening part and an air vent on the transverse member and inserting a main body from the opening part to a hollow part. SOLUTION: A ventilating unit 20 is furnished with a rectangular box type main body 21, and outdoor side openings 25 are respectively formed on an indoor side opening 23 formed of a plural number of slit type holes on an upper surface plate 22 of this main body 21 and a lower surface plate 24. Additionally, a pair pf flanges 26 an provided continuously with this upper surface plate 22, and a shielding body 30 to open or close the outdoor side opening 25 is provided in the inside of the main body 21. This shielding body 30 comes to an opened position as it is moved and energized upward by an elastic member 31, and the shielding body 30 comes to a closed position as it is moved downward by a cam 32.  Thereafter, an opening part 11 is formed on an upper cross plate 6 of a transom 1, an air vent 12 is formed on a lower cross plate 7, and it is possible to ventilate the indoor side by using the transom 1 by fastening the flanges 26 on the upper cross plate 6 by machine screw 27 from above by inserting the ventilating unit 20 into the inside of the hollow part 10 from the opening part 11.