baber/WOPTO huggingface dataset:
Patent JP-S562681-A (JP)
Title: Distortion compensatory circuit for light emitting diode
Inventor: ASAI TAKAHIRO
IPC: H01L33/00
Filed: 1979-06-21
Abstract: PURPOSE:To simultaneously compensate differential phase distortion as well as differential gain distortion which causes color deviation on a light emitting diode, by adding a variable capacitance as a part of a circuit for compensating the differential phase distortion. CONSTITUTION:The collector of a transistor 4 is connected to a light emitting diode 3 which produces a light output 2. The emitter of the transistor is grounded through a resistor 5. An input signal is applied to the base of the transistor from a terminal 1 to drive the diode 3. To compensate the differential gain distortion of the diode 3, a series circuit consisting of a variable resistor 7 and a switching diode 6 is coupled to the emitter of the transistor 4 and a variable DC voltage V1 is applied to a terminal of the resistor 7. To simultaneously compensate the differential phase distortion of the diode, one end of a variable capacitor 17 is coupled to the connection node of the diode 6 with the resistor 7 and the other end of the capacitor is grounded. As a result, the differential gain distortion of the diode 3 is limited to 1% or less and its differential phase distortion is limited to 1 deg. or less. Characteristics of the doide are thus improved very much.
Patent JP-S5413082-A (JP)
Title: Method of shearing front and rear end portions of hot-rolled materials
Inventor: NARIAI YASUMASA
IPC: B26D1/56
Filed: 1977-06-30
Abstract: PURPOSE: To improve the yield of hot-rolled materials by shearing as necessary the end portions end portions as to whether they are suitably shaped to be passed through a finishing rolling mill smoothly, and determining shearing positions at which the amount of cutting-down portions of the materials can be minimized. 
     COPYRIGHT: (C)1979,JPO&Japio
Patent JP-S59205091-A (JP)
Inventor: ICHIKAWA HIROO
IPC: F15D1/02
Filed: 1983-05-04
Abstract: (57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。
Patent JP-H06264631-A (JP)
Title: Parking device
Inventor: IMAZATO HIROYA
IPC: E04H6/06
Filed: 1993-03-11
Abstract: PURPOSE:To make it possible to park even if the parking space is as narrow as a car in the breadth and shallow in the depth. CONSTITUTION:When a slide mechanism 20 is actuated, a pallet 10 is transferred from a parking position to a road. A ear (A) to be parked is mounted on the pallet 10. In this state, the slide mechanism 20 is reversely actuated. Then the pallet is returned to the parking position. In this way, the car A is finished to park in the parking position. When an entirely reverse motion is conducted, the pallet 10 is returned to the road and hence, the car is delivered to the outside and returned to the road.
Patent JP-H08277763-A (JP)
Title: Fuel injection valve
Inventor: KOGA NOBUHIKO
IPC: F02M61/06
Filed: 1995-04-04
Abstract: PURPOSE: To reduce the influence of unbalance having occurred upstream of a nozzle on the fuel injected from the outlet of the nozzle, in a fuel injection valve which is equipped with a needle valve having a projection fronting on the fuel discharge passage made at the head of a valve body. CONSTITUTION: A measuring orifice 5, which has a plurality of nozzles 6, is arranged at the outlet of the fuel discharge passage 4 of a valve body 1. A needle valve 2 moves inside the valve body 1, and opens and closes a fuel passage. The diameter of circumcircle of the openings on the side of the fuel discharge passage 4 of the nozzles 6 of the measuring orifice 5 is smaller than diameter of the projection 3 provided at the tip of the needle valve 2.
Patent JP-S537607-A (JP)
Title: Method of producing purified methl tertiary butylethel
Inventor: FURITSUTSU OOBENAUSU
IPC: B01J31/00
Filed: 1977-07-01
Abstract: Process for the preparation of pure methyl tert.-butyl ether. Isobutene or isobutene-containing hydrocarbon mixtures are reacted with methanol in a molar ratio of 1:1 to 1:2 in the liquid phase at temperatures of between 30 DEG  and 100 DEG  C. on sulfonated, strongly acidic, macroporous organic ion exchange resins. After separation of the unreacted hydrocarbons, the reaction mixture is distilled under pressure; the methanol-containing distillate formed during the distillation is recycled into the zone of the reaction between methanol and isobutene; and pure methyl tert.-butyl ether is withdrawn from the sump of the distillation column.
Patent JP-H04311793-A (JP)
Title: Nematic liquid crystal composition
Inventor: TAKEUCHI KIYOBUMI
IPC: G02F1/13
Filed: 1991-04-11
Abstract: PURPOSE:To provide the subject composition containing a specific polycyclic compound, effective for preventing the generation of stripe domain, having chemical stability, drivable at a low voltage by high time-sharing driving and usable over a wide temperature range. CONSTITUTION:The objective composition contains a compound selected from the group consisting of (A) a compound of formula I (R<1> is 1-10C straight-chain alkyl; m is 0 or 1; X<1> is H or F; group of formula II is formula III or formula IV; n is integer of 2-5 when the group of formula II is formula III and n is integer of 1-5 when the group of formula II is formula IV), (B) a compound of formula V (R<2> is 1-10C straight-chain alkyl; p is integer of 2-5; X<2> is H or F) and (C) a compound of formula VI (R<3> is 1-10C straight-chain alkyl; Y and Z are single bond, -COO- or -CH2CH2-; X<3> is H or F).
Patent JP-S59207021-A (JP)
Title: Magnetic recording medium
Inventor: YAMAGISHI HIROAKI
IPC: G11B5/708
Filed: 1983-05-06
Abstract: PURPOSE:To improve the durability, wear resistance, surface state and traveling performance by incorporating an aliphatic isocyanate and an aromatic isocyanate as a curing agent. CONSTITUTION:Magnetic powder, a binder and additives are dispersed in an org. solvent, and an aromatic isocyanate and an aliphatic isocyanate are added to prepare a coating liq. This coating liq. is coated on a support to manufacture a magnetic recording medium. Tolylene diisocyanate (TDI), 4,4'-diphenylmethane diisocyanate (MDI), the adduct of TDI or MDI to an active hydrogen compound or the like is used as the aromatic isocyanate, and the preferred average mol. wt. is 100-3,000. Hexamethylene diisocyanate (HMDI), lysine isocyanate, the adduct of HMDI or lysine isocyanate to an active hydrogen compound or the like is used as the aliphatic isocyanate, and the preferred mol.wt. is 100-3,000. The amount of the isocyanates added is 1-100wt% of the amount of the binder, and aromatic isocyanate accounts for 20-80% of the amount of the isocyanates.
Patent JP-S565317-A (JP)
Title: Preparation of calcium silicate or complex of calcium silicate with gypsum
Inventor: MURAKAMI YOSHIO
IPC: C01B33/24
Filed: 1979-06-25
Abstract: PURPOSE: To easily provide nice petaline calcium silicate by a method wherein gypsum and alkali silicate is mixed and reacted in aqueous medium, and the obtained solid is cleaned, then is subjected to a hydrothermal reaction.  
     CONSTITUTION: Gypsum and alkali silicate are reacted in aqueous medium so as to provide reacted solid product mixed with unreacted raw materials and by-produced alkali sulfate. The solid is cleaned to remove unreacted gypsum and alkali sulfate. Then, the solid is added with aqueous medium to form slurry solution, which is treated with hydrothermal reaction to grow calcium silicate or calcium silicate- gypsum complex body. The calcium silicate or calcium silicate-gypsum complex body is separated, and is cleaned, as required, then is dried. In the process for obtaining the above slurry, the total or part of high temperature water obtained in the hydrothermal treatment is preferably is circulated and used. 
     COPYRIGHT: (C)1981,JPO&Japio
Patent JP-H10253428-A (JP)
Title: Magnet float type level gauge
Inventor: MORITA YASUTERU
IPC: G01F23/62
Filed: 1997-03-14
Abstract: PROBLEM TO BE SOLVED: To provide a level gauge that, when used under negative pressure, eliminates the fear of a float flying at the time of releasing a drain valve, so that damage to the float can be prevented. SOLUTION: This level gauge has a magnet-equipped float 13 floated in a chamber 12 communicated with a liquid tank 11 and made of a nonmagnetic substance with a level W corresponding to that of the liquid tank 11, and an indicator 14 which is subjected to the magnetic field action of the magnet is placed along the chamber 12 to indicate the level. In this case, a gas leg part 2 is provided in a flow passage 1 between the chamber 12 and a drain valve installed below the chamber 12, to prevent gas from suddenly flowing into the chamber 12 at the time of releasing the drain valve.
Patent JP-H05238807-A (JP)
Title: Transparent electrically conductive oxide
Inventor: KAWAZOE HIROSHI
IPC: C04B35/495
Filed: 1992-02-29
Abstract: PURPOSE:To provide an oxide material which has high electric conductivity, a wide range of transparent wave length and chemical and photochemical stability. CONSTITUTION:The oxide is a transparent compound which has the composition formula: AB2O4 (the combination of A:Mg, Zn or Cd ion and B:Ga ion; the combination of A:Mg or Zn ion and B:In ion; an arbitrary ratio combination of A:Mg, Zn or Cd ion and B:Ga or In ion; the combination of A:Li or Na ion and B:In1/2Sn1/2 ion; the combination of A: Zn ion and B:Zn2/3Sb1/3 ion and the combination of A:Zn ion and B:Zn1/2Sn1/2 ion), and a spinel type crystalline structure containing rutile chains wherein the reduction, ion replacement or excessive cation addition is optimally applied to give the electric conductivity. The excessive cation addition is applied only to the spinel type.
Patent JP-S60223158-A (JP)
Title: Manufacture of semiconductor device
Inventor: NAKAGAWA YOSHIKAZU
IPC: H01L29/72
Filed: 1984-04-18
Abstract: PURPOSE:To prevent the increase in rbb' (base spreading resistance) by a method wherein the direct contact between an external base layer and an emitter layer is prevented, the increase in CEB (capacitance between an emitter and a base) is suppressed by slightly changing the condition of processes and the like, and at the same time, a low density impurity layer constituting an inner base layer is interposed between the external base layer and the emitter layer. CONSTITUTION:After resists 15 and 15' have been removed, a heat treatment is performed on a substrate 11 using a silicon nitride film 14 as a mask, and a selective oxide film 16 is formed. At this time, the high density boric ions implanted in the part having no shielding layer are diffused, and a p<+> type outer base layer 17 is formed. On the other hand, the medium density boric ions implanted through the circumference of the silicon nitride film 14 are diffused, and a p-region 18 which is a medium density impurity region is formed. Boron is ion-implanted into polycrystalline silicon 12 as n type impurities, boron is diffused from polycrystalline silicon 12 to the substrate 11, and an n<+> type emitter layer 20 is formed by performing a self-matching process utilizing a selective oxide film 16. As a result, a p-region 18 is interposed between the outer base layer 17 and an emitter layer 19.
Patent JP-H05243894-A (JP)
Title: Oscillator using sc cut crystal vibrator
Inventor: KOYAMA MITSUAKI
IPC: H03H9/19
Filed: 1992-02-29
Abstract: PURPOSE:To obtain proper compensation data by linearly changing resonance frequencies in an A mode corresponding to temperature changes by excluding the coupling of the other vibration mode to the resonance of sub vibration in the A mode. CONSTITUTION:Corresponding to the change of the resonance frequency in the A mode for an SC cut crystal vibration 1 segmented from a plane rotating the plane of crystal orthogonal to the Y axis about at 22 deg. with the Z axis as a center and further rotating that plane about at 34 deg. from this rotated position with the X axis as the center, temperature compensation 4-6 of the resonance frequency of a third-order overtone in a C mode is executed. When the thickness of a crystal piece 1 is defined as (t) and the dimension in the xx' axis direction is defined as (x), the condition of 14.816<x/t<14.824 or 14.834<x/t<14.860 is established and when the dimension in the zz' axis direction is defined as (z), the condition of 14.800<z/t<14.828 or 14.840<z/t<14.876 is established.
Patent JP-2000278002-A (JP)
Title: Dielectric filter
Inventor: NIHEI TAKASHI
IPC: H01P1/205
Filed: 1999-03-24
Abstract: PROBLEM TO BE SOLVED: To adjust coupling between resonators without deteriorating the Q. SOLUTION: In the dielectric filter, a conductor pattern 16 extended to connect short-circuit end faces or to connect the short-circuit end face and an open end face is formed on an adhered face of a dielectric substrate 11 between resonators, and the conductor pattern 16 between the resonators is formed to be wider at its middle part and narrower at its ends. In the case of the interdigital resonators, capacitive coupling is high in the middle and inductive coupling is high at its ends. Since the width of the conductor pattern at the ends is made narrower, an interrupting quantity of a magnetic field is small to increase the inductive coupling. The entire coupling amount depends on the capacitive coupling in the middle and the inductive coupling ensures a high Q.
Patent JP-S61238595-A (JP)
Inventor: TOYODA SHIGERU
IPC: B64F1/32
Filed: 1985-04-16
Abstract: (57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。
Patent JP-H04315006-A (JP)
Title: Bonding inspection method of flip chip
Inventor: SUZUKI SHINJI
IPC: G01B15/04
Filed: 1991-04-12
Abstract: PURPOSE:To enable all defects including a bump which is formed inside a flip chip to be inspected at high speed regarding a bonding inspection method of the flip chip according to X rays. CONSTITUTION:X-rays silhouette images of a plurality of bumps 28 are picked up by emitting X rays in a direction for most reducing mutual overlapping of the bump 28 in the irradiation direction from nearly side direction for a plurality of bumps 28 of a flip chip 21 which is bonded to an electrode of a printed-circuit board 24. When minimum and maximum values of a width of each bump 28 which are obtained from the X-rays silhouette image exceed a prescribed value or an image edge of bump exists within the prescribed region, it is judged to be a bonding failure.
Patent JP-S5415885-A (JP)
Title: Earthworm raising vessel
Inventor: TAKANO MITSUO
IPC: A01K67/00
Filed: 1977-07-05
Abstract: PURPOSE: To raise a large number of earthworms of a uniform size in a short period of time with the smallest possible amount of bait without specially controlling the quantity of bait and water to be given thereto. 
     COPYRIGHT: (C)1979,JPO&Japio
Patent JP-H07262840-A (JP)
Title: Transparent conductive film and its manufacture
Inventor: OOTA YURIE
IPC: H01B1/00
Filed: 1994-03-25
Abstract: PURPOSE:To provide a transparent conductive film excellent in light transmission property and conductivity profitably in the aspects of mass production and cost for equipment by applying fluid dispersion over a substrate, and sintering it after it has been dried wherein fluid dispersion is prepared by adding an specified film forming assistant to an acid aqueous solution of Ir compounds or Sn compounds. CONSTITUTION:Alkali partial hydrolyzable material of inorganic indium compounds and inorganic tin compounds is dispersed in acid aqueous solution in which indium compounds or tin compounds are dissolved. Furthermore, fluid dispersion to which film forming assistant composed of organic solutions including inorganic indium compounds and organic thin compounds is added, is applied over a substrate, and the substrate is then sintered after it has been dried, so that an intended transparent conductive film is thereby obtained. The transparent conductive film is made up of finely divided particles of indium oxides, each primary particle of which is 10 to 100nm in diameter, and of fine particles of thin oxides each particle size of which is 10 to 100nm in diameter.
Patent JP-H02260137-A (JP)
Title: Optical system moving device
Inventor: TAKAHASHI NAOMASA
IPC: G11B7/09
Filed: 1989-03-30
Abstract: PURPOSE:To prevent the vibration of a lens immediately after access, and to realize high speed access, and in addition, to simplify constitution by supporting the center shaft of the rotation of an optical head so as to be capable of rotating by using a bearing member in which a fluid lubricant is charged. CONSTITUTION:When electricity is charged at a drive coil 19 for track access, the optical head 1 is rotated in parallel with an optical disk 2 by couple of forces around the shaft 5, and an irradiating laser beam spot R through an objective lens 6 faces a prescribed track. The center shaft 5 of the rotation of the head 1 is supported by a slide bearing 10 in which the fluid lubricant 9 is charged, and when the shaft 5 rotates, the lubricant 9 flows in a clearance between the shaft 5 and the bearing 10, and the shaft 5 is supported as being kept in a non-contact state to the bearing 10 by pressure due to the flow of the lubricant 9. Thus, the shaft 5 rotates smooth, and the head 1 can be moved very finely, and the vibration of the lens 6, etc., immediately after the access is not caused.
Patent JP-H01254593-A (JP)
Title: Cap forming/mounting unit
Inventor: KAJI MASAYUKI
IPC: B21D51/44
Filed: 1988-03-30
Abstract: PURPOSE:To make the moving speed of containers faster and improve the working efficiency, by making respective retainers of the feeder move in the same direction with the suction head with the same speed while a multiple number of caps on the retainers are picked up simultaneously, and making respective suction heads move in the same direction with the containers with the same speed when the caps are placed. CONSTITUTION:A suction head 4, which has picked up three caps B simultaneously from a retainer 2, starts descending gradually when a cam follower 37 reaches an uphill tilting surface 29a of a cam 29. When the cam follower 37 reaches a top horizontal surface 29c, the caps B are placed on containers C. When the cam follower 37 approaches a downhill tilting surface 29b of the cam 29, the suction head 4 is cut off from the vacuum source. When the cam follower 37 descends the downhill tilting surface 29b, the suction head 4 ascendes, leaving the caps B on the containers C. Since the suction head 4 is equipped on a live endless chain 27, the same motion is repeated. The containers C are sent to the next process by a conveyor 70.
Patent JP-H01252130-A (JP)
Title: Battery recharge circuit
Inventor: KOTABE MITSUHO
IPC: H02J7/10
Filed: 1988-03-31
Abstract: PURPOSE:To suppress heating of a transistor, by inserting an inductive impedance into a recharge circuit upon increase of high frequency output from a power source thereby suppressing increase of load on a dropper transistor. CONSTITUTION:A dropper transistor Q1 is connected in series between the output winding N2 of a high frequency output power source 1 and a battery B. Output voltage from a high frequency output detection winding N5 increases with increase of source voltage, and an output signal is fed to a control circuit 5. Upon reception of the output signal from the high frequency output detection winding N5, a control circuit 5 inserts an inductor L2 having inductive impedance into a recharge circuit.
Patent JP-H06291651-A (JP)
Title: Pll circuit for liquid crystal display device
Inventor: NAKAMURA JUNICHI
IPC: H03L7/08
Filed: 1993-04-06
Abstract: PURPOSE:To provide the PLL circuit capable of stably providing a clock output covering over a wide band and having high response speed by switching the oscillation band of a VCO while multiplying the output of frequency dividing ratio of a programmable frequency divider by the detected result of a horizontal synchronizing frequency detector. CONSTITUTION:Frequency dividing ratio setting data Dn for deciding a PLL output frequency are inputted to a programmable frequency divider 6, and a set frequency dividing ratio (a) is sent to a synchronizing frequency detector 1. Then, the result of applying the digital frequency conversion of the cycle to a horizontal synchronizing pulse fH of an input image signal is sent to a multiplier 2 by being combined with the set frequency dividing ratio (a). The result is sent to a decoder 3 for selecting the oscillation frequency band of a VCO 5 as the arithmetic result of the multiplier 2, and the oscillation frequency band of the VCO 5 is decided through a band switcher 4 by the decoder 3. An output pulse (c) of the VCO 5 is sent to a frequency divider 6, and an output (b) is converted from phase difference to voltage by a phase comparator 7 and fed back through an LPF 8 to the VCO 5 as the control voltage of the VCO 5. By repeating this operation, an output fout is outputted from the VCO 5 as a stable output.
Patent JP-H10276499-A (JP)
Title: Hearing aid and earplug for the same
Inventor: YANAGISAWA AKIRA
IPC: A61F11/08
Filed: 1997-03-31
Abstract: PROBLEM TO BE SOLVED: To provide an earplug for a hearing aid, with which earwax is hardly put into a sound discharging port, by providing a cover, which has an opening part in the direction of the side face, so as to cover the sound discharging port. SOLUTION: A shell 1 for incorporating a microphone, a speaker or an amplifier and an inserting part 2 to be inserted into the external auditory miatus are integrally provided. On the top end side of this inserting part 2, a sound discharging port 21 is opened through the thickness of the wall surface in the top end direction of the sound discharge part 20. In order to hardly put earwax into this sound discharging port 21, a cover 5 in the shape of circular dome is provided while having two opening parts 50 in the side face direction so as to surround the sound discharging port 21. In this case, the cover 5 the opening parts 50 are arbitrarily formed and the number of opening parts 50 is not limited to two but it is enough to provide one opening part at least.  Thus, since the cover 5 is provided so as to cover the sound discharging port 21 on the wall surface toward the top end of the inserting part 2, earwax to be infiltrated from the fore side into the sound discharging port 21 is blocked by that cover 5.
Patent JP-S5727765-A (JP)
Title: Driving coil unit for dot printer head
Inventor: IKEDA YOSHINDO
IPC: B41J2/275
Filed: 1981-05-26
Abstract: PURPOSE:To simplify the assembly of dot head for reducing the cost of assembly by providing a positioning hole for a driving coil in a base plate whose both surfaces are provided with the wiring of plural driving coils. CONSTITUTION:The positioning hole for plural driving coils 3, provided in a base plate whose both surfaces are provided with wiring patterns for each driving coil and a common wiring pattern, with a wiring connecting the winding start with the winding end of the coil 3, is inserted with a coil core 4 attached to a frame 1, and a nose 20 is inserted into the central opening of the frame 1. And, a coil push plate 9, a working plate 6 with a plunger 5, and a working plate pugh cover 7 are attached to the opposite side of the base plate 13.