baber/WOPTO huggingface dataset:
Patent JP-H0277136-A (JP)
Title: Mis field-effect transistor
Inventor: YAMASHITA NOBUHIKO
IPC: H01L29/78
Filed: 1989-04-06
Abstract: PURPOSE:To prevent a current from flowing through a PN junction when a current is made to flow by applying a positive potential and a negative potential to the source and the drain, respectively, and reduce the recovery time so much that neglection is permitted by connecting a Schottky barrier junction between a source electrode and a channel region, which junction is in parallel to a PN junction between the channel region and the source region, has the same polarity as said PN junction, and has a diffusion potential lower than said PN junction. CONSTITUTION:In an MIS field effect transistor, a Schottky barrier junction 20 is formed in a channel region 4 and from the main surface 2 side. The transistor is constituted of a Schottky barrier type region 21 having a P-type impurity density lower than the channel region 4, and a Schottky barrier electrode 22 formed on a P-type semiconductor region 21, which electrode forms a Schottky junction in combination with the above P-type semiconductor region. Since the source electrode 10 is connected with the channel region 4 via the Schottky barrier junction 20, the high speed operation together with the recovery time reduction are facilitated without decreasing the breakdown strength between the source and the drain.
Patent JP-S60231952-A (JP)
Title: Relative speed control device of magnetic recording and reproducing device
Inventor: YOSHINO KAZUO
IPC: G11B15/467
Filed: 1984-04-30
Abstract: PURPOSE:To keep a relative speed constant by controlling the speeds of a head and a tape when the tape having no exclusive track for an address signal or the like travels rapidly at the reproduction of the tape. CONSTITUTION:The formula I is the number of revolutions Nn of a drum motor which is necessary for setting up a relative speed to a constant value V1 when the tape is rapidly travelled in a forward or backward direction at an n-times speed and the formula II is the number Mn of tracks crossed by the head which corresponds to the speed of the tape to be travelled at the number of revolutions Nn of the drum. The tape can be rapidly travelled at a fixed speed and the relative speed can be made constant to respective values of n times the reference speed by controlling the travelling speeds of the drum motor and the tape so that the formulas I, II are formed. Since the travelling speed of the tape is detected as a digital value corresponding to the number of tracks crossed by the head, an error exists when the digital value is compared with the calculated result obtained from the formula II, but the error is actually neglected because the retrieval of a program is executed generally at a high speed and there are many tracks crossed by the head.
Patent JP-H10268904-A (JP)
Title: Method and device for self-organizing for optimally control nonlinear physical controlled system
Inventor: SERGEI V ULIYANOV
IPC: G05B11/42
Filed: 1997-03-21
Abstract: PROBLEM TO BE SOLVED: To optimally control a complicated and nonlinear controlled system by obtaining difference between the time differentiation of entropy inside of the controlled system and the time differential of entropy to be given to the controlled system to evolve a control rule by a genetic algorithm with the difference as an evaluation function. SOLUTION: An arithmetic unit 2a calculates the time differential dSu/dt of the entropy generation of a plant 1 and the time differential dSc/dt of the entropy generation of the PID controller 4 of a plant 1 and outputs the entropy generated quantity dS/dt of the whole system being the difference of entropy generation. A controller 2b evolves input information K to the fuzzy neural circuit network 3a of a fuzzy logic hierarchical part 3 by genetic algorithm to reduce the difference between the time differential dSu/dt of the entropy generation of the plant 1 and the time differential dSc/dt of the entropy generation of the PID controller 4 with the entropy generating quantity dS/dt of the whole system as the evaluation function.
Patent JP-S63263408-A (JP)
Inventor: HANSUUURURIHI BERUTSU
IPC: G01B21/02
Filed: 1988-04-11
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-H01270759-A (JP)
Title: Multiphase symmetrical unipole commutatorless dc motor
Inventor: KIN DAIGEN
IPC: H02K29/00
Filed: 1988-04-11
Abstract: PURPOSE: To perform starting and rotation with maximum energy by providing an individual-phase driving circuit part, the field pole unit coil part of a stator, a rotor part and a position detecting part. CONSTITUTION: This device has three-phase six poles and is formed into a stator 10 and a rotor 11 in which a rotor magnetic pole 12 comprising four permanent magnets are fixedly disposed with a fixing ring 13, and the stator 10 is formed into six pieces of field magnetic pole unit assembly 14, and the field magnetic pole unit 14 of respective opposed phases forms one phase to make three phases. The assembly 14 further is formed of a magnet 15 for magnetic force amplification and an iron core 17 in which a field magnetic pole unit coil 16 is provided, and a field magnetic pole unit 18 is insertedly disposed.  Also, in the rotary shaft 19 of the rotor 11, four pieces of signal detection magnetic poles 20 are provided at its one-side end and four pieces of signal detection sensor 22 are provided on one side of a housing 21 close thereto in the state of being tilted to a degree of 3 deg., -5 deg. with respect to a signal detection magnetic pole 19.
Patent JP-H07265640-A (JP)
Title: Deodorizing filter medium
Inventor: SUZUKI MITSUTOSHI
IPC: B01D53/04
Filed: 1994-03-31
Abstract: PURPOSE:To increase deodorizing capacity by forming a deodorant bed consisting of a granular deodorant between a charged nonwoven fabric and a coarse holding nonwoven fabric to constitute a dust-removing and deodorizing filter medium and using a deodorant having a grain diameter capable of being held by the coarse nonwoven fabric to reduce the resistance and to increase the bed thickness. CONSTITUTION:An active carbon bed 4 (deodorant bed) consisting of an active carbon grain 5 as the deodorant is formed between a charged nonwoven fabric 2 and a holding coarse nonwoven fabric 3 having a rigidity enough to hold the shape. The bed 4 is bonded to the nonwoven fabric 3 with an adhesive binder 6. The active carbon grain 5 has a diameter which is not passed through the fabric 3, and the resistance is reduced. Further, the deodorizing capacity is improved by increasing the bed thickness.
Patent JP-S57203763-A (JP)
Title: Manufacture of aluminized ultrathin steel plate which is excellent in its workability
Inventor: ARAI SHINICHI
IPC: C23C2/12
Filed: 1981-06-09
Abstract: PURPOSE:To obtain an aluminized ultrathin steel plate which is excellent in its plating  adhesive property and workability, by performing aluminizing to a steel plate which  has formed crystal particle size of the surface layer part to twice or more as large as that of the inside, and after that, cold-rolling and annealing it. CONSTITUTION:Aluminizing is performed to a steel plate which has formed crystal particle size of its surface layer part to twice or more as large as that of its inside, and  also has set thickness of this surface layer part to >=1/20 of that of the steel plate, if possible. As for said steel plate, both a hot-rolled steel plate and a cold-rolled steel  plate are available, and a kind of steel is not limited particularly, for instance, aluminum killed steel, rimmed steel, etc., but it is important that its recrystallization temperature is low, and also crystal particle size of its steel plate surface layer part can be  made coarse easily. Subseqently, cold-rolling and annealing are performed to said steel  plate to which aluminizing has been performed, in order to obtain prescribed plate  thickness, and also the steel plate surface layer part contacting with the plating layer,  and its inside layer part are constituted of a cold-rolling recovery structure, and a recrystallization structure, respectively, by which an object aluminized ultrathin steel  plate can be obtained.
Patent JP-H09256103-A (JP)
Title: Hot rolled steel plate capable of providing steel plate member of low yield ratio after hot forming, and the hot rolled steel plate member
Inventor: KASHIMA TAKAHIRO
IPC: C22C38/00
Filed: 1996-03-15
Abstract: PROBLEM TO BE SOLVED: To provide a hot rolled steel plate capable of providing a steel plate member of sufficiently low yield ratio after hot forming and also to provide the hot rolled steel plate member. SOLUTION: This steel plate has a composition which consists of, by weight, 0.03-0.25% C, 0.01-1.0% Si, 0.50 2.0% Mn, <=0.05% P, <=0.03% S, <=0.08% sol.Al, <=0.01% N, and the balance Fe with inevitable impurities and further contains, if necessary, prescribed amounts of one or more elements selected from group A consisting of Cr, Ni, and Mo, group B consisting of Nb, Ti, and V, B, and Ca and in which Ceq represented by Ceq=C+Si/24+Mn/6+Ni/40+Cr/5+Mo/4+ V/14 is regulated to 0.2-0.5. Further, the average hardness of ferrite grains of >=15μm is regulated to >=Hv110, and the difference between the maximum and the minimum hardness of these ferrite grains is regulated to >=Hv10, preferably >=Hv15.
Patent JP-H05114588-A (JP)
Title: Method of etching quaternary mixed crystal of ingaasp
Inventor: INOUE TAKESHI
IPC: C23F4/00
Filed: 1991-03-26
Abstract: PURPOSE:To etch a quaternary mixed crystal of InGaAsP with an excellent verticality and to make it possible to obtain a smooth etching surface by a method wherein argon is added to the mixed gas of ethane gas and hydrogen gas and a reactive ion etching is performed. CONSTITUTION:Argon is added to the mixed gas of ethane gas and hydrogen gas. It is desirable that the addition mount of the argon is restrained at a smell quantity of a flow rate ratio of 1 to 20% to the mixed gas of ethane gas and hydrogen gas. A photoresist or a resist for electron beam exposure use is used as an etching mask. Thereby, in respect to not only an InP quaternary mixed crystal but also an InGaAsP quaternary mixed crystal the good smoothness of an etching surface is obtained. This is assumed the reason that a physical sputter etching effect is introduced by the addition of argon and a polymer can be inhibited form being formed and adhered on the etching surface.
Patent JP-H06296995-A (JP)
Title: Concentrated sludge transfer system
Inventor: NISHIJIMA MAMORU
IPC: C02F11/00
Filed: 1993-04-15
Abstract: PURPOSE:To provide a concd. sludge transfer system capable of stably supplying concd. sludge to plural sludge driers even if the concn. of concd. sludge changes. CONSTITUTION:The concd. sludge in a hopper 1 is forced under pressure into a concd. sludge header 5 by a concd. sludge transfer pump 2. The pressure of the sludge in the header 5 is controlled to a specified value to quantitatively supply to the concd. sludge driers 3 and 4, and hence a specified amt. of concd. sludge is supplied to the driers 3 and 4 by concd. sludge feed pumps 7 and 8 provided on the delivery side of the header 5 through sludge transfer pumps 9 and 10. Meanwhile, the sludge pressure in the header 5 is controlled based on the result measured by a sludge pressure measuring device 11.
Patent JP-H08227032-A (JP)
Title: Optical fiber cable
Inventor: OKADA NAOKI
IPC: G02B6/44
Filed: 1995-02-21
Abstract: PURPOSE: To make it possible to easily take coated optical fiber ribbons out of grooves for housing coated optical fibers without flawing these ribbons by using yarn or tapes by arranging the yarn or tapes in the form of crossing the grooves and entering the spacings between the inside walls of the grooves and the coated optical fibers. CONSTITUTION: This optical fiber cable has the grooves 14 for housing the coated optical fiber ribbons 10 continuously in the longitudinal direction of the cable and is arranged with the yarn or tapes 40 in the form of crossing the grooves 14 and entering the spacings between the inside walls of the grooves 14 and the coated optical fiber ribbons 10. To take the coated optical fiber ribbons 10 out of the grooves 14 at the time of post branching, an operator holds the yarn or tapes 40 with his hand and pulls the yarn or the tapes, thereby taking out the coated fiber ribbons.  Namely, the coated optical fiber ribbons 10 laminated at a high density are housed via the yarn or the tapes 40 in the grooves 14 of the slot rod 12 in such a manner and, therefore, the coated optical fiber ribbons 10 are easily taken out without flawing the fiber ribbons by using the yarn or tapes 40 at the time of making the post branching work.
Patent JP-S61245793-A (JP)
Title: Diaphragm for speaker
Inventor: KAWAHARA FUMIO
IPC: H04R7/02
Filed: 1985-04-24
Abstract: PURPOSE:To obtain a diaphragm for speaker with low density, high rigidity, and high internal loss by using the mixture of bleached sulfite pulp and flax pulp as row main materials for paper making. CONSTITUTION:The mixture obtained by mixing bleached sulfite pulp and flax pulp is used as main materials to form the oscillating body by paper making. For example, flax to which a digester where the liquid ratio of 20% Na2SO3 solution to 4% NaOH solution is 1:7 is added is digested at 160 deg.C for 4hr, and the digester is washed away completely after difestion to obtain flax pulp, and this flax pulp is beaten by beater to adjust the degree of beating to 75 deg.SR. Bleached sulfite pulp swollen for about 10min is supplied to the beater to adjust the degree of beating to 45 deg.SR with about 4.0% pulp concentration. They are adjusted to a pulp liquid of about 0.3% paper making concentration and are made into a sheet of a diaphragm by a paper making net tool which is formed into a cone and has 12cm diameter. This diaphragm is heated and pressured at 180-200 deg.C mold temperature with a prescribed mold and is dried.
Patent JP-2000284433-A (JP)
Title: Silver halide photographic sensitive material
Inventor: NAKAMINE TAKESHI
IPC: G03C1/42
Filed: 1999-03-30
Abstract: PROBLEM TO BE SOLVED: To obtain a silver halide photosensitive material containing a developing agent in which an image with enough color developing density can be obtd. by incorporating a specified compd. SOLUTION: This photosensitive material contains a compd. expressed by the formula of Cp-L-D. The compd. can form a dye by the intramolecular reaction or intermolecular reaction caused by oxidation. In the formula, Cp is a coupler residue, and the coupler residue may be a four-equiv. coupler residue or two-equiv. coupler residue, and the connecting bonds of the coupler residue may be at any position as far as the position enables substitution in the coupler, L is a divalent connecting group or bond, and L is preferably 1-10C, more preferably 1-6C, and most preferably 1-4C alkylene or arylene group or -O-, -S-, -CO-, -SO-, -SO2- or -N(R') and R' is a hydrogen atom or substituent, and D is a residue of a carbamoyl hydrazine type developing agent.
Patent JP-S61246727-A (JP)
Title: Automatic exposing circuit for camera
Inventor: NAKAJIMA YUKIO
IPC: G03B7/083
Filed: 1985-04-24
Abstract: PURPOSE:To remove the influence of variance of an offset voltage by catching voltage charged from a constant current circuit to the 1st integrated circuit as a project of a constant current and time and using the voltage as a base voltage at the determination of exposure time. CONSTITUTION:An electric circuit is provided with a capacitor 25 as the 1st integrated circuit for integrating a constant current only by a voltage corresponding to set film sensing information, a capacitor 31 as the 2nd integrated circuit for integrating the optical current of a photometric photoelectromotive element 29 in the reverse direction against the capacitor 25 and a comparator 33 as a comparing/deciding circuit for comparing the fum of output voltages of the capacitors 25, 31 with a reference voltage Vr1. After integrating the capacitor 25, the capacitor 31 starts to integrate synchronously with the unlocking of a front screen of a focal plane shutter and then the post screen of the shutter is unlocked simultaneously with the inversion of the output voltage of the comparator 33. Consequently, precise exposing time can be determined independently of the variance of the offset voltage.
Patent JP-S63255199-A (JP)
Inventor: SEKI TOKIAKI
IPC: B64G1/40
Filed: 1987-04-10
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-H09279563-A (JP)
Title: Protective construction method
Inventor: SHIBAZAKI MITSUHIRO
IPC: E02D3/10
Filed: 1996-04-10
Abstract: PROBLEM TO BE SOLVED: To prevent a landslide by draining underground water by inserting a long size tubular member made of a seamless-flexible material into a foundation along an expected sliding surface from a low part of an inclined surface layer. SOLUTION: A small hole 3 to store water is excavated in a surface layer of an inclined foundation. Next, a coiled tube 4 is pushed in the underground from the hole 3. Next, while controlling the coiled tube 4 on the excavating direction by an angle adjuster a direction measuring instrument arranged on the tip of the coiled tube 4, and a foundation is excavated by a foundation excavating bit, and excavation is advanced along a stratum likely to generate a sliding surface 2. The underground water is also gathered in the coiled tube 4 through a hole formed in a side surface of the coiled tube 4, and is drained through the hole 3 of the surface layer 1 by a head H.
Patent JP-S5314558-A (JP)
Title: Semiconductor device
Inventor: NISHIDA KIYOO
IPC: H01L21/60
Filed: 1976-07-26
Abstract: PURPOSE: To form electrodes of corrosion resistance and high reliability by forming a gold or silver layer via specified metal film such as of Cr, W, Si, etc. on bonding pads of Al. 
     COPYRIGHT: (C)1978,JPO&Japio
Patent JP-S5613712-A (JP)
Title: Ignition coil for internal combustion engine
Inventor: WATANABE HIROSHI
IPC: H01F27/28
Filed: 1979-07-13
Abstract: PURPOSE:To manufacture a compact ignition coil of good insulation, by furnishing a flange on an end of a primary coil bobbin, providing the flange with a grounding terminal hole and an annular stepped part for holding an end of the secondary coil bobbin and by making an annular groove on the outermost peripheral part of the flange to mount an injection molding case. CONSTITUTION:The low voltage side of the secondary coil 4 is placed at the flange 8 of a primary coil bobbin 1. A grounding terminal 6 is inserted into the hole of the flange 8 and connected to the low voltage side of the secondary coil 4. An injection molding case 5 is inserted into a groove on the peripheral part of the flange 8 and secured. Insulating resin is injected and solidified to manufacture a coil unit 10. Numerous L-shaped core plates 12 are inserted into the central angle hole of the coil unit. Other numerous L-shaped core plates 13 are attached with a spacer 14 to the outside of the coil unit. The coil units is integrated by resin 15, thereby completing an ignition coil. According to this constitution, a grounding wire can be easily attached, the reliability of insulation is high and the low voltage side of the secondary coil adjoins the flange 8 of the primary coil bobbin. As a result, no creeping discharge occurs on the bobbin and the insulation of the coil is enhanced.
Patent JP-H10281155-A (JP)
Title: Magnetic bearing
Inventor: SATO TAKESHI
IPC: F16C32/04
Filed: 1997-04-07
Abstract: PROBLEM TO BE SOLVED: To provide a magnetic bearing to perform stable control in a wide range of number of revolutions. SOLUTION: This magnetic bearing is formed such that by a control signal based on a position signal from a rotor 1, a plurality of sets of electromagnets 2, 3, 5, and 6 arranged in the vicinity of the outer periphery of the rotor 1 are excited, and the rotor 1 is rotatably levitated to a given position by the electromagnetic forces of the electromagnets 2, 3, 5, and 6. In this case, in a number of revolutions region wherein control of approximately the rigid body mode resonance frequency of the rotor 1 is rendered unstable, a control system is controlled such that a frequency fixed at a command frequency, at which a phase surplus angle is obtained, forms the central frequency of a notch filter.  In other number of revolutions region, a control system is controlled such that a command frequency synchronized with the rotary frequency of the rotor 1 forms the central frequency of a notch filter. This constitution performs stable control even in the region of the approximate rigid body mode resonance frequency of the rotor 1, and prevents the occurrence of whirling due to the unbalance of the rotor 1 in other region than the resonance frequency.
Patent JP-H11288726-A (JP)
Title: Electrode for alkaline storage battery, its manufacture, and alkaline storage battery
Inventor: ASANO KOTA
IPC: H01M4/66
Filed: 1998-04-01
Abstract: PROBLEM TO BE SOLVED: To provide an inexpensive iron sintered substrate and an inexpensive alkaline storage battery using it, by improving the iron sintered substrate having three-dimensionally continuous space used for the alkaline storage battery. SOLUTION: This alkaline storage battery is constituted by nickel-plating an iron powder sintered substrate having three-dimensionally continuous space, and filling active material powder into the space part of the substrate 1. Here, nickel-iron alloy layers 3a, 3b are formed on the surface of an iron base portion of the substrate 1, and nickel density is higher than iron density in the alloy layers 3a formed under the nickel-plate layers 2, while the nickel density is lower than the iron density in the alloy layer 3b formed on the iron base portion without the nickel layers 2 thereon.
Patent JP-S61248488-A (JP)
Title: Semiconductor laser device
Inventor: NAKATSUKA SHINICHI
IPC: H01S5/00
Filed: 1985-04-26
Abstract: PURPOSE:To make a crystal growth on a step unnecessary and eliminate the deterioration of elements caused by the stress due to a waveguide by a method wherein a hetero construction is formed horizontally by utilizing mixed- crystallization of a superlattice construction produced by impurity diffusion and ion implantation. CONSTITUTION:Crystal growth of a P-type Ga0.4Al0.6As layer 9 and a GaAs/ Ga0.2Al0.8As superlattice layer 10 is successively made on a P-type GaAs substrate 8 by an MOCVD method. A detail composition of the superlattice layer 10 is such that the GaAs layer is composed of 10 laminated layers whose respective layer thickness is 5nm and the Ga0.2Al0.8As layer is composed of 10 laminated layers whose respective layer thickness is 15nm. Then a silicon nitride mask with a stripe shape window of 3mum width is formed to form a super lattice mixed-crystallizing region 11. Then, a P-type Ga0.4Al0.6As cladding layer 12, a Ga0.8Al0.2As activation layer 13, an N-type Ga0.4Al0.6As cladding layer 14 and an N-type GaAs cap layer 15 are formed by the MOCVD method again and Au/Cr and Au:Ga:Ni/Cr/Au are evaporated in a vacuum to form a positive side electrode 16 and a negative side electrode 17 respectively.