baber/WOPTO huggingface dataset:
Patent JP-2001031419-A (JP)
Title: Purification of copper sulfate
Inventor: ANDO KOJI
IPC: C01G3/10
Filed: 1999-07-22
Abstract: PROBLEM TO BE SOLVED: To obtain high-purity copper sulfate with nickel content being a specific level or lower by such a practice that an aqueous solution of crude copper sulfate containing nickel as an impurity is heated to a specified temperature or higher, and copper sulfate separated and sedimented is then collected and subsequently dissolved in water again, and the resultant aqueous solution is concentrated to effect recrystallization of the objective copper sulfate. SOLUTION: This high-purity copper sulfate is obtained by the following procedure: an aqueous solution of nickel-contg. copper sulfate is heated to >=80 deg.C, and copper sulfate separated and sedimented is then collected and subsequently dissolved in water again, and the resultant aqueous solution is concentrated to effect recrystallization, thus obtaining the objective copper sulfate <=0.001 wt.% in nickel content; for example, the procedure is as follows: pure water is added to 1.3 kg of copper sulfate to prepare a 2L aqueous solution, which is heated under vigorous agitation; after complete dissolution of the copper sulfate, the aqueous solution is kept at >=85 deg.C for 4 h, thereby concentrated to 0.8 L, the resultant yellow-green precipitate is filtered and separated;  the precipitate is then dissolved in water again and subsequently recrystallized, thus affording the objective high-purity copper sulfate 0.0004 wt.% in nickel content in a single step concentration; wherein the pH of the aqueous copper sulfate solution prior to heating is pref. 1.7-4.5 and the upper limit of heating temperature is the boiling point 100-110 deg.C at the atmospheric pressure.
Patent JP-2001035852-A (JP)
Title: Manufacture of semiconductor device
Inventor: FURUYA AKIRA
IPC: H01L21/304
Filed: 1999-07-22
Abstract: PROBLEM TO BE SOLVED: To provide a new manufacturing method of a semiconductor device, which prevents a wiring material from being oxidized when the above wiring material which is easily oxidized such as a copper material is buried in a groove formed in a photoresist and a layer type film, and simplifies a process of performing a chemical and mechanical process on the layer type film. SOLUTION: A photoresist 130 is deposited on a layer type film 120 and after the photoresist 130 is exposed and developed, the film 120 is processed. After that, a layer type film 140 is deposited on the photoresist 130, is subjected to chemical and mechanical polishing and is processed to remove in order the film 140 and the photoresist 130. In such a way, the removal of the photoresist is also performed in a process for performing the chemical and mechanical polishing.
Patent JP-H1035919-A (JP)
Title: Sheet feeding device and recording device
Inventor: SAKAMOTO TAKAHIRO
IPC: B65H3/44
Filed: 1996-07-17
Abstract: PROBLEM TO BE SOLVED: To provide a sheet feeding device of high quality with high productivity by omitting sheet presence sensors independently provided on a plurality of sheet feed ports, and providing a sheet sensor on the upstream side near a function means (recording means). SOLUTION: When a feed instruction is outputted from a control part, a recording sheet S placed and housed in a first sheet cassette 1a is immediately fed by a feed roller 3a without detecting its presence. When the delivered recording sheet S is detected by a sheet sensor 6 within a prescribed time from the rotation starting time of the feed roller 3a, the recording sheet S is carried in a prescribed quantity by a feeding roller pair 5 from the point where the end is detected by the sheet sensor 6. When no recording sheet S is detected within the prescribed time, the lack of the recording sheet S is recognized, and another sheet, when it is of the same sheet size and sheet material, is fed by a feed roller 3b. Thus, the number of part items and the number of assembling processes can be reduced.
Patent JP-H0257624-A (JP)
Title: Method for replacing gas into air in blast furnace
Inventor: MORIYAMA SHIGERU
IPC: C21B5/00
Filed: 1988-08-22
Abstract: PURPOSE:To forcedly replace gas in a blast furnace into the air at the time of stopping blast in the blast furnace and to prevent blowing-cut of the gas from neighborhood of charging bells by welding piping between bottom part of an uptake gas pipe and a correcting part and arranging an exhauster at end part. CONSTITUTION:At the time of stopping the blast furnace 1, charging of the raw material from a charging chute 7 is stopped and the blast from tuyeres 4 is closed and also the raw material charging level 3 is lowered to the prescribed height. Successively, a bleeder valve 9 is opened to exhaust the furnace gas from a bleeder pipe 12. Together with this, the furnace gas is forcedly evacuated with the exhauster 16 arranged through a cut-off valve 15 at the end part of the piping 14 welded between the bottom part 17 of the uptake gas pipe 8 and the correcting part 18. By this method, the atmosphere near the charging bells 5, 6 is sucked into the furnace and replaced into the air. Therefore, repair of the charging apparatus together with the repair of furnace wall 2, etc., can be safely executed and the blast stopping time is shortened.
Patent JP-H0765934-A (JP)
Title: Manufacture of sheet-form heater
Inventor: ISHIBASHI MASATOSHI
IPC: H05B3/20
Filed: 1993-08-23
Abstract: PURPOSE:To enhance the waterproofness and moisture resistance of a sheet-form heater and allow it to serve with good performance even under a high humidity atmosphere by covering a heat emitting body and the first and the second metal plate to sandwich it with a fiber-form substance and a thermoplastic resin. CONSTITUTION:A heat emitting substance 8 to emit heat when current is fed and a core layer sheet 7 as a stampable sheet formed by inserting the heat emitting substance 8 in each hole 7a are provided between the first and the second metal plate 9 furnished with a plurality of through holes 7a penetrating from the front to the rear surface. The plates 9 are sandwiched by an upper sheet 5 and a lower sheet 6 consisting of stampable sheet having a fiber-form substance and a thermoplastic resin to form a laminate, which is then heated so that the thermoplastic resin melts. The laminate is subjected to a compressive shaping process at 0.8-10kg/cm<2>, and the heat emitting substance and plate are sealed with the fiber-form substance and thermoplastic resin. Thereby the thermoplastic resin of the sheets 5, 6, 7 passes through the holes 7a and the ends of the plates 9 to accomplish consolidating to ensure that the waterproofness and moisture resistance are enhanced.
Patent JP-H1030300-A (JP)
Title: Roof truss structure
Inventor: FUKUDA TAKESHI
IPC: E04B7/02
Filed: 1996-07-17
Abstract: PROBLEM TO BE SOLVED: To reduce the number of a roof truss constituting members, reduce its cross section, and apply rain stop procedures of a ridge section from the attic space. SOLUTION: This steel-framed roof truss structure is provided with portal trusses 5 constituted of a pair of vertical roof struts 6, 6 erected on columns 4, 4 separated in the girder direction, purlins 7 connecting the upper ends of the roof struts 6, and bracings connecting the purlins 7 and the roof struts 6. Frame materials 20a in the roof grade direction of the panel frames 20 of roof panels 19 are installed on the purlins 7.
Patent JP-H1050718-A (JP)
Title: Manufacture of semiconductor device
Inventor: MOCHIZUKI YASUHIRO
IPC: H01L21/304
Filed: 1996-08-07
Abstract: PROBLEM TO BE SOLVED: To reduce the increase of the process step number, without loosing the characteristics, even if using a large-diameter thick semiconductor wafer by recessing the main surface of the wafer to reduce the thickness of main current pass regions. SOLUTION: A semiconductor substrate 1 has a p-n junction between two opposed main surfaces to flow a main current from the electrode on one main surface of the substrate to the electrode on the other opposed main surface. To produce such semiconductor device, recesses 4 are formed into at least one main surface to substantially reduce the thickness of the semiconductor substrate 1 at main current pass regions. P is diffused, e.g. in both main surfaces of the substrate 1 to form n<+> layers 2, 3 and one main surface is polished to remove the P-diffused layer 2. After forming grooves 4 ink the main surface polished to remove the layer 2, B is diffused in the substrate to form a p<+> layer 5 and it is pelletized by a diamond wheel.
Patent JP-H0554433-A (JP)
Title: Optical disk
Inventor: NAKAJIMA KAZUO
IPC: G11B7/2433
Filed: 1991-08-20
Abstract: PURPOSE:To improve durability without adding a fresh protective layer to a structure for protecting the reflection layer of the optical disk. CONSTITUTION:The existing 1st protective layer 13 which exists nearer a substrate 11 side than the reflection layer 16 is so constituted as to have overhanging parts 13a, 13b overhanging annular nearer the outer peripheral edge 11a side and central hole 12 side of the optical disk than the reflection film 16. The widths w1, w2 of the overhanging parts 13a, 13b are constituted to about 3mm.
Patent JP-S6452741-A (JP)
Title: Novel process for producing optically active 1-(p-tolyl) ethylamine
Inventor: TSUDA MAKOTO
IPC: C07B57/00
Filed: 1987-08-24
Abstract: PURPOSE:To obtain the titled compound useful as an optical resolution agent, in high yield and purity, by reacting (+ or -)-1-(p-tolyl)-ethylamine with an inexpensive resolution agent and separating the produced diastereomer salt taking advantage of the solubility difference. CONSTITUTION:(+ or -)-1-(p-Tolyl)ethylamine is made to react with 0.6-1.2 equivalent of a resolution agent comprising optically active 2-pyrrolidone-5-carboxylic acid or optically active 2-(6-methoxy-2-naphthyl)propionic acid in a solvent (e.g. 2-propanol) preferably at a temperature between about 50 deg.C and the boiling point of the solvent. The reaction product is heated and dissolved to form a supersaturated solution. If necessary, the solution is added with a small amount of a diastereomer salt having lower solubility in said solvent among the two kinds of the diastereomer salts and cooled preferably to 0-50 deg.C. The precipitated hardly soluble salt is separated to obtain the objective compound.
Patent JP-H0853198-A (JP)
Title: Apparatus for supplying liquid
Inventor: IDA SHUICHI
IPC: A23L23/00
Filed: 1994-08-10
Abstract: PURPOSE:To prevent the liquid from boiling down and keep it from excessive stirring by varying the heating capacity of an electric heater and also the speed of the stirring by a stirring device in keeping with the quantity of the liquid in a warmed tank. CONSTITUTION:The title apparatus is equipped with a warmed tank 6 for storing liquid, a stirring device with a driving part 12 attached to the lid 61 of the tank 6 and stirring blades 13 suspended at the bottom of the tank 6, and a means of supplying liquid which is connected to the tank 6 and by which liquid is poured into a piece of tableware. Furthermore, there are provided a liquid-level detective means for detecting the level of the liquid in store in the tank 6, a heater 3 for keeping warm the liquid in store in the tank 6, and a controller which controls, on the basis of the height of the liquid level detected by the liquid-level detective means 9, the stirring device with respect to the speed of stirring and the heating value per unit time of the heater 3.
Patent JP-H0258232-A (JP)
Title: Monolithic ic for switching regulator
Inventor: ITO HISASHI
IPC: H01L27/06
Filed: 1988-08-24
Abstract: PURPOSE:To prevent any abnormal actuation due to the parasitic effect from occurring in an IC inner circuit without using any outer fitting part by a method wherein a metallic electrode in junction with an epitaxial layer is provided in an island of an inner output switching transistor to form a Schottky barrier diode while the metallic electrode is supplied with ground potential. CONSTITUTION:Within a monolithic IC for switching input power supply of a switching regulator with an inductance directly connecting to an inner output switching transistor, a metallic electrode 12 in junction with an epitaxial layer 3 is provided in an island of said transistor to form a Schottky barrier diode(SBD) while the metallic electrode 12 is supplied with ground potential so that, when the collector potential of said transistor is reduced to a level lower than the ground potential due to the inverse electromotive force of the inductance, said SBD can be connected to supply a current for the collector 3 of the inner output switching transistor from a ground line.
Patent JP-H0371694-A (JP)
Title: Manufacture of wiring board
Inventor: SHIMO YOSHIO
IPC: H05K3/00
Filed: 1989-08-11
Abstract: PURPOSE:To obtain a wiring board which is less in manufacturing process, low in cost, and excellent in adhesion to a circuit pattern by a method wherein a prepreg on which a circuit pattern is printed is provided onto the surface of a semi-cured molded body formed by thermocompressing thermosetting resin molding material, which is thermocompressed. CONSTITUTION:A prepreg on which a circuit pattern is printed with conductive paste is provided onto the surface of a semi-cured molded body formed by thermocompressing thermosetting resin molding material, which is thermocompressed. Conductive resin or synthetic resin mixed with conductive material such as silver, copper, or the like is used as the conductive paste concerned, and it is preferable that the a circuit pattern is printed through a screen printing for obtaining a fine pattern and simplifying a process, and a combined material or the like of woven or nonwoven fabric formed of inorganic fiber, organic synthetic fiber, or natural fiber such as cotton or the like, which is impregnated with resin such as phenolic resin, cresol resin, or the like and dried up, is used as the prepreg concerned. Phenolic resin, urea resin, or the like is used as the thermosetting molding material, and a heating and pressing means is not especially defined. By this setup, a wiring board can be formed in a short process at a low cost and improved in adhesion to a circuit pattern.
Patent JP-H05343129-A (JP)
Title: Plug insertion auxiliary and insertion easy receptacle
Inventor: CHIBANA MINEO
IPC: H01R13/631
Filed: 1992-06-10
Abstract: PURPOSE:To eliminate inconvenience of inserting a plug gropingly by mounting an auxiliary, provided so as to guide the plug to a plug-in port by mounting step-difference plates and grooved plates to the inside of an external frame, to a receptacle. CONSTITUTION:Step difference plates 2 are provided in four corners in the inside of an external frame 1, to prepare a groove for guiding a plug to an insertion port 5 on a receptacle, and in order to negate a little protrusion of the insertion port 5 obstructing in the case of inserting the plug into this groove, a groove plate 3 with thickness about equal to this protrusion further thinner than the plate 2 is provided. A viscous unit 4 for mounting a receptacle is provided in a reverse side of the apparatus. In this way, in the case of inserting the plug, only by sliding the plug, brought into contact with a surface of the apparatus, in an optional direction, the plug is fitted to the vertical or horizontal groove prepared by the plates 2. Next, when moved upper/lower or right/left directions along the groove, the plug is smoothly guided. Since the external frame 1 plays a role of a stopper, the plug is prevented from springing out to the outside.
Patent JP-H0257748-A (JP)
Title: Transmission structure
Inventor: NAKAMURA NORIMI
IPC: F16H3/08
Filed: 1988-08-22
Abstract: PURPOSE:To have a transmission having a high transmitting efficiency and in compacted configuration by fitting a pair of input bevel gears for regular and reverse rotation on a transmission shaft mounted perpendicular to the input shaft in such a way as capable of alternative transmission. CONSTITUTION:A transmission shaft 12 is mounted on a transmission case 45 in the condition perpendicular to the input shaft, and a pair of input bevel gears 14, 15 for regular and reverse rotation are mounted on this transmission shaft 12, and alternative transmitting to the input shaft is made through connection by operating a shift rod 18 for changing over from forward to backward and vice versa. The regular and reverse drive forces to be input are transmitted to the left and right axles 11 through a differential case 41 by meshing a train of gears 20A-20C with 21A-21C selectively using a shifter 24. Thus a transmission construction is accomplished, which has high transmitting efficiency and is made in compacted configuration.
Patent JP-S6271065-A (JP)
Title: Head positioning mechanism of magnetic-disk memory device
Inventor: YAMAOKA KEISUKE
IPC: G11B21/02
Filed: 1985-09-24
Abstract: PURPOSE:To stably position a head regardless of the head position, by providing an arm holding the head, steel belt, and plate spring which gives tension to the steel belt and forming a bow structure with the plate spring and steel belt, with the steel belt being used as a string. CONSTITUTION:A head 3 which records and reproduces signals on a disk 1 is fixed to an arm main body 5 supported by means of a pivot shaft 4 under a freely rotational condition. A steel belt 6 and plate spring 7 are fitted to the arm main body 5 and the steel belts 6 moves around a capstan 8. By driving the capstan 8 by means of a step-motor, the head 3 is positioned. Since no excessive external force acts on a step-motor shaft regardless of the position of the head 3 and the steel belt 6 always forms a straight line the tensile load of the plate spring becomes constant. Therefore, displacement caused by the drive of the step-motor is stabilized and the head 3 can accurately be positioned on the disk 1, when the head 3 is positioned by driving the step-motor.
Patent JP-H1046678-A (JP)
Title: Steel curved beam
Inventor: YOSHIO TOSHIMASU
IPC: E04B1/58
Filed: 1996-08-07
Abstract: PROBLEM TO BE SOLVED: To easily ensure accuracy of positional relation and to provide a curved beam having a joint section capable of being formed with sufficient strength by welding. SOLUTION: A steel curved beam is equipped with a joint section 14 joined by butting first and second steel beams respectively having up and down flanges 20 and 21 and web sections 26 lengthwise at a specific curved angle. This curved beam 10 provides a square weld plate 31 having sufficient size to cover the joint end face of first and second steel beams 18 and 19 between the first and second steel beams 18 and 19, the webs 26 of the first and second steel beams 18 and 19 are respectively fillet welded to the weld plate 31 on both sides, and the first and second steel beams 18 and 19 and weld plate 31 are mutually welded by a welding material filling a recessed section formed of the end faces opposed to the upper or the lower flanges 20 and 21 of the first and second steel beams 18 and 19 and the end face of the weld plate 31 to form.
Patent JP-H0655348-A (JP)
Title: Wire electric discharge machining device
Inventor: TANAKA MAKOTO
IPC: B23H7/02
Filed: 1992-08-05
Abstract: PURPOSE:To prevent a cooling water lead-in port from being clogged even in the long-time machining process so as to eliminate the fear of generating the severance of wire and dispense with maintenance, thereby improving work efficiency. CONSTITUTION:A cooling air lead-in port 20 opened into a machining liquid supply part 5 is formed of insulating material. The cooling air can be thereby led to a feed part 12 in the process of machining so as to eliminate the sticking of attachment caused by electrical deposition.
Patent JP-2000040135-A (JP)
Title: Ic card
Inventor: KAWANO KEIJI
IPC: B42D15/10
Filed: 1998-07-24
Abstract: PROBLEM TO BE SOLVED: To minimize damages by illegal write even in the case that a charging machine is stolen and a card is illegally written by the stolen charging machine. SOLUTION: Areas #1-#9 for recording value information are provided in the memory 12 of this IC card 1 and the area 12A for storing the address of the areas #1-#9 is provided. In this case, at the time of issuing the card 1, the area #9 is selected by the address of the area 12A and the value information is recorded (b). Then, a user purchases a product and subtraction is performed from the area #9 at the time of adjusting a charge (c). When the balance of the area #9 is used all (d), the address of the area 12A is subtracted, the next area #8 is selected, the value information is recorded and issuance is performed again (e). In such a manner, the value information is successively recorded in the final area #1, and when it is used and becomes '0' (f), the use of the card is inhibited.
Patent JP-H1034421-A (JP)
Title: Throw-away type rotating cutter
Inventor: FURUTA SHINJI
IPC: B23C5/10
Filed: 1996-07-18
Abstract: PROBLEM TO BE SOLVED: To provide a throw away type rotating cutter which can cut stably across a long term by discharging a chip to the outside favorably in response to the rotation of the rotating cutter without fusing by blocking the chip cut by an edge of a throw away tip between the throw away tips. SOLUTION: In a throw away type rotating cutter in which a twisted groove 22 slanted by a required angle for its axis O is formed on the trunk part 21 of a shank 20 and also plural throw away tips 10 are installed on the trunk part of the shank along the twisted groove through a required interval in the rotation direction rear side of the shank in this twisted groove, recessed parts 25 are installed on the trunk part of the shank between the throw away tips.
Patent JP-S60101734-A (JP)
Title: Optical head
Inventor: ARAI SHIGERU
IPC: G11B7/09
Filed: 1983-11-07
Abstract: PURPOSE:To carry out the function of reproduction, etc., accurately by detecting the irradiation position of a light beam which records and reproduces information optically by a detecting means and correcting the irradiation position of each light beam into a specific position according to the detection output. CONSTITUTION:When recording laser light W shifts in position from a Y axis toward a detector (a), comparison part 17 outputs the output signal of the detector (a). A driving circuit 19 drives a recording beam deflecting plate 10 so that its deflection angle varies according to the output signal of the detector (a). Recording laser light W and reproduced laser light W are deflected and position correction is so made that the laser light is returned to the Y axis. When the recording laser light W and reproduced laser light M shift in position from the Y axis in either direction of an X axis, a position correcting means M operates similarly and position correction is so made that the laser light beams are returned to the Y axis. This correcting means position the focus of the reproduced laser light M right behind the focus of the recording laser light W on the same circumferential track of a recording medium 1 inevitably to improve the reliability of recording, reproduction, etc.