baber/WOPTO huggingface dataset:
Patent JP-S58147146-A (JP)
Title: Manufacture of semiconductor device
Inventor: KOBAYASHI TATSUMI
IPC: H01L21/8228
Filed: 1982-02-26
Abstract: PURPOSE:To obtain a high collector withstand transistor which does not need interelement isolating and diffusing steps by forming the first and second buried regions on a semiconductor region as well as the third buried region in the first buried region, then forming an epitaxial layer and forming two insular regions of different conductive types in the epitaxial layer. CONSTITUTION:A low density N type impurity diffused region 4 and a high density N type impurity diffused region 6 are formed in a semiconductor substrate 1. Then, high density P type impurity regions 8, 8' are formed, and a  high specific resistance epitaxial layer 9 which contains an N type impurity is formed. Then, a heat treatment is performed, thereby rediffusing the impurity of the regions 6, 8, 8' to the surface of the layer 9. Thereafter, a P-N-P type transistor and an N-P-N type transistor are formed by an ordinarily planar process. In this manner, a high performance complementary bipolar analog integrated circuit can be formed without necessity of the steps of isolating and diffusing the element.
Patent JP-S63199268-A (JP)
Title: Near infrared leuco dye and recording material containing said dye
Inventor: SATO KOZO
IPC: C09B11/26
Filed: 1987-02-13
Abstract: NEW MATERIAL:The compound of formula I [R<1>-R<3> are H, alkyl, aralkyl, cycloalkyl or aryl; X<1> and X<2> are O, S or -N(R<4>)- (R<4> is same as R<1>-R<3>); the rings A-E (benzene or naphthalene ring) and the above substituent group may be further substituted with other substituent groups]. EXAMPLE:The compound of formula II. USE:A recording material suitable for the use of an image reading device, etc. It has strong absorption band in near infrared region (>=700nm) and high light fastness. PREPARATION:The objective leuco dye of formula IV can be produced by reacting phenothiazine with n-butyl bromide, passing phosgene gas through the reaction product, reacting the resultant compound of formula III with sodium dihydro-bis(2-methoxyethoxy)aluminate and further with 1-methylindole-2- carboxylic acid.
Patent JP-H01207101-A (JP)
Title: Process and apparatus for producing concentrated liquid
Inventor: FUSAOKA YOSHINARI
IPC: B01D17/025
Filed: 1988-02-15
Abstract: PURPOSE:To produce highly concentrated org. liquid from a mixture of org. liquids by using a combination of pervaporation process and separation process basing on a difference of specific gravities. CONSTITUTION:A mixture of org. liquids such as aq. soln. of butanol, etc., is supplied in a first stage to a permselective membrane 2 consisting of poly(1- methylsilyl-1-propyne), etc., and separated by the pervaporation process, and a permeated component is taken out by vaporizing under reduced pressure generated by a vacuum pump 4, and collected by cooling with a cooler 3. Then, in a second stage, the phase-separated collected liquid is separated further in a separating apparatus 5 basing on a difference of specific gravities, and separated concentrated liquid is collected in a storage tank 6 for the concentrated liquid.
Patent JP-2000231034-A (JP)
Title: Optical coupler
Inventor: ITO TAKESHI
IPC: G02B6/32
Filed: 1999-02-09
Abstract: PROBLEM TO BE SOLVED: To make it possible to select an optical coupling function and an optical path switching function and to attach and detach a branch line fiber to and from a trunk line fiber, to obtain the degree of optical coupling which hardly depends upon fiber mode conditions, and to mount the branch line fiber and trunk line fiber at low cost orthogonally to each other. SOLUTION: A trunk line module 26 is equipped with a 1st collimator 32 and a 2nd collimator 34 in a 1st cylindrical housing 30. The 1st collimator 32 collimates the light projected from the trunk line fiber into parallel light. The 2nd collimator 34 converges the parallel light from the 1st collimator 32 on a trunk line fiber end. The tube wall between the 1st and 2nd collimators have an opening 48 into which a branch line reflecting mirror is inserted. A branch line module 28 is equipped with a 3rd collimator 58, a 4th collimator 60, and a reflecting mirror 62 in a 2nd housing 50.  When the branch line module 28 is mounted on the trunk line module 26, the reflecting mirror 62 is positioned between the 1st and 2nd collimators to guide at least part of the projection light from the 1st collimator 32 to the 3rd collimator 58 and at least part of the projection light from the 4th collimator 60 to the 2nd collimator 34.
Patent JP-2000232238-A (JP)
Title: Nitride semiconductor light-emitting element and manufacture thereof
Inventor: OTA HIROYUKI
IPC: H01S5/10
Filed: 1999-02-09
Abstract: PROBLEM TO BE SOLVED: To allow the generation of such a defect as to penetrate a single crystal film on a substrate and to improve the light-emission characteristic by a method wherein a buried part consisting of the same material as the material for a burrier layer encircling a through dislocation is provided in an active layer. SOLUTION: In an active layer 6, having as a main constituent InGaN which is constituted of a well layer 62 and a barrier layer 61, is formed into a multiple quantum well structure, a buried part 51 consisting of the same material as the material for a burrier layer 7, which encircles a through dislocation 15 extending from a lower guide layer 5 consisting of an N-type GaN layer to an upper guide layer 8 consisting of a P-type GaN layer, is demarcated by an interface 50 extending to the periphery of the dislocation 15 and consists of a P-type Al0.2Ga0.8N layer, is provided. By this constitution, as the periphery of the dislocation 15 is covered with the buried part 51 consisting of the AlGaN layer having a large band gap, both electrons 16 and holes 17 cannot reach the dislocation 15. Accordingly, the luminous efficiency of a semiconductor nitride light-emitting element is increased in comparison with one having no buried part 51.
Patent JP-H03236343-A (JP)
Title: Production of dialdehyde derivative
Inventor: SHIMOJU TAKASHI
IPC: C07C69/708
Filed: 1990-02-09
Abstract: PURPOSE:To obtain the subject compound on an industrial scale at a low cost by epoxidizing an olefin derivative with hydrogen peroxide in the presence of sodium tungstate, phosphoric acid and a phase-transfer catalyst in a binary system containing a non-polar solvent and oxidizing the product with periodic acid. CONSTITUTION:The objective compound of formula III useful as an intermediate for a prostaglandin-like compound can be extremely easily produced in high purity and yield using inexpensive and highly safe hydrogen peroxide and periodic acid by reacting a compound of formula I [one of A<1> and A<2> is H and the other is (CH2)nX or A<1> and A<2> together form a protected CO; n is 1 or 2; X is acetoxy, COOR or OCH2COOR; R is 1-4C straight-chain or branched alkyl] with hydrogen peroxide in the presence of sodium tungstate, phosphoric acid and a phase-transfer catalyst in a binary system containing a non-polar solvent and reacting the resultant compound of formula II with meta-periodic acid in a binary system containing a non-polar solvent.
Patent JP-H02212775-A (JP)
Title: Pll circuit and alternating current voltage detecting circuit
Inventor: KAWADA SHINYA
IPC: G01R25/00
Filed: 1989-02-13
Abstract: PURPOSE:To improve accuracy in detecting synchronization of a phase of a basic wave and in detecting a phase and an amplitude of an alternating current voltage by switching a zero cross point phase detecting/operating unit and a Fourier converting/ operating unit of a PLL sampling data for a phase detecting unit of a digital PLL circuit in accordance with the deviation of the phase. CONSTITUTION:When a PLL is withdrawn, a zero cross point of a signal digitized by an A/D14 is obtained by a zero cross point calculating/operating unit 22 on the basis of a sample instructing pulse of a sample timer 16. At this time, a switching means 34 is at the A side. Phase data of the zero cross point and inner phase data of a sample counter 18 are compared at a phase comparing/operating unit 26, and a sampling period is corrected in accordance with the deviation of the phase, with the PLL brought in the withdrawn state. After the PLL is completely withdrawn, the switching means is turned to the B side, whereby the phase data of a Fourier operating unit 24 is input to the other terminal of the operating unit 26. Accordingly, the phase of components of a base wave can be compared with high accuracy. The switching means 34 is switched by an output of a phase difference judging/operating unit 32.
Patent JP-H01206724-A (JP)
Title: Counter
Inventor: NISHIKAWA JUNJI
IPC: H03K21/02
Filed: 1988-02-12
Abstract: PURPOSE:To attain counting at the leading edge and trailing edge of a clock by dislocating the synchronizing timings of two D-FFs in the leading edge and trailing edge of the input clock and generating a counted pulse in both leading edge and trailing edge of the clock. CONSTITUTION:The signal of an increase instruction control line 11 is held by a D-FF101 in the leading edge of the input of a clock input line 13. The signal of a decrease instruction control line 12 is held by a D-FF102 in the trailing edge of the clock input. The output of this D-FF102 is inputted through a NOT gate 122, which has a prescribed delay time, to an AND gate 131 together with the output of the D-FF101. An output line 14 of the AND gate 131 is connected to the input INC1 of a counter 141 and the output line 15 of the D-FF102 is connected to the input DEC1 of the counter 141. A circuit composed of AND gates 132 and 133 and an OR gate 134 outputs the input CLK1 of the counter 141.
Patent JP-S59157803-A (JP)
Title: Stylus holding device of pickup cartridge
Inventor: MATSUMURA ASAYUKI
IPC: G11B3/50
Filed: 1983-02-25
Abstract: PURPOSE:To improve the reliability for assembling a stylus by having a non- circular section for a damper and the front edge hole of a sleeve through which the damper is fitted and therefore securing the accurate matching between the chip of the stylus tip and the center shaft of the sleeve. CONSTITUTION:A projection 20 is provided from the entrance to the inside edge at the upper end of a front edge hole 19 of a sleeve 18. The projection 20 is fitted accurately to a groove 17 of a damper 16. The revolving position is naturally decided by fitting the damper 16 into the sleeve 18 while having matching between the groove 17 and the projection 20 when the sleeve 18 is assembled with a parts element in which the damper 16, a magnet 3 and a cantilever 1 are unified together. Thus it is possible to secure the accurate matching between the chip center axis s-s' of the stylus tip and the center axis y-y' of the sleeve 18.
Patent JP-S59157549-A (JP)
Title: Generator for magnetic field gradient
Inventor: MURATA YASUSHI
IPC: G01R33/20
Filed: 1983-02-25
Abstract: PURPOSE:To generate such a magnetic field gradient that the intensity of a magnetic field per unit current is large and the uniformity of the magnetic field is excellent by forming a coil around a cylinder so that a current flowing through the coil meets specific requirements. CONSTITUTION:The coil 15 is so formed that a component in the direction of an angle theta between the reference line Z of a current flowing through the coil at an optional point on the surface of the cylinder 11 with a radius R and a vertical line 12 from the center O of the cylinder 11 to a cylinder axial core Y and a component in a direction (y) parallel to the direction Y of the axial core satisfy condition of expressions I and II. Then, the cylinder 11 generates a gradient magnetic field which has large field intensity per unit current, excellent magnetic field uniformity, and small deviation, thereby reducing the size of the constitution of the magnetic field gradient generator.
Patent JP-S57146234-A (JP)
Title: Film advancing device
Inventor: KIMURA HIROYUKI
IPC: G03B17/00
Filed: 1981-03-05
Abstract: PURPOSE:To facilitate handling a camera, by detecting the increment of a torque load to switch the mode from a continuous film advancing mode to a rewinding mode. CONSTITUTION:A torque detecting lever 78 which is moved while interlocking with the movement of a patrone detecting lever 27 to the left due to a patrone 35 is detained by a detaining lever 74, and a motor is started by a contact piece 79 to turn torque detecting gears 71 and 72, and a film is advanced to the patrone 35. By the increment of a torque load for the completion of this continuous advancing, only the gear 72 is stopped. Then, the gear 72 rises through slopes 71b and 72b of respective parts to slide the lever 74, and the lever 78 where detention is released is moved to the left furthermore, and the motor is reversed by the contact piece 79. Therefore, parts of gears 72 and 71 engaged with each other again, and the film reaches a rewind initial position, and a switch is opened to stop the motor, and the photographic preparation is completed, and the mode is automatically switched from the continuous film advancing mode to the mode for rewinding one frame at every shutter operation, and thus the camera is handled easily.
Patent JP-S62192233-A (JP)
Title: Continuous casting apparatus for thin plate
Inventor: TSUJITA KOZABURO
IPC: B22D11/06
Filed: 1986-02-15
Abstract: PURPOSE:To stably produce a thin plate in continuous casting by arranging one pair of molten metal supplying means, supplied from side-parts at the top surfaces of one pair of endless belts and also arranging cooling plates abutted on the both sides of the casting thin plate at the lower part of a mold. CONSTITUTION:One pair of the endless belts 45, 46 are hung to two pairs of drums 41-44 respectively, and also a lest spout 47 and right spout 48, which supply the molten metal from the side-parts, are arranged at near the top part of the belts. Further, one pair of the cooling plates 51 abutted on the both side of the casting thin plate descended from a gap between the side of the casting thin plate descended from a gap between the side plates 49 are arranged under pushing by coil springs. The molten metal is supplied from the spouts 47, 48 at near the top parts of the belts 45, 46, to execute continuous casting as cooling at the gap between the both belts. As the molten metal is cooled efficiently by the cooling plates 51 and also enables the operation under low static pressure thereof, the continuous casting for the thin plate having <=50 mm thickness is stably executed.
Patent JP-H01206748-A (JP)
Title: Spread spectrum communication system
Inventor: ISHIGAKI YUKINOBU
IPC: H04B1/707
Filed: 1988-02-13
Abstract: PURPOSE:To improve interference resistance and noise resistance by close arranging the spectra of plural two-phase PSK signals in a condition that they are not mutually interfered, executing spectrum spreading with a single spreading code and executing communication. CONSTITUTION:Information data from an input terminal In1 are supplied to a multiplier 5 and on the other hand, carries from input terminals In2 and In3 are added by an arithmetic circuit 8 and after that, supplied to the multiplier 5. The two-phase PSK signal generated by the multiplier 5 is supplied to a multiplier 6 and the spectrum spreading is executed by the spreading code from a pseudo-noise code generator 9. A demodulating part 20 has a BPF11, comb line filters 12 and 13, multipliers 15-17, an arithmetic circuit 18, a pseudo- noise code generator 19 and an LPF21 and demodulating information are outputted to an output terminal Out2.
Patent JP-S54124396-A (JP)
Title: Wire-cut electric-discharge processing device
Inventor: INOUE KIYOSHI
IPC: B23H7/04
Filed: 1978-03-22
Abstract: PURPOSE:To operate high-precision wire-cut processing, by maintaining the slackening of a wire electrode supply supporting arm and a take-up supporting arm constant at all times, and thereby eliminating the relative deviation between the wire electrode and the work. CONSTITUTION:The slackening of wire electrode take-up supporting arm 5 is detected by strain gauge 20. To make the detected value of slackening a desired fixed value, the damping force of wire electrode brake device 14 and the tension of wire electrode pull-out device 9, that is, DC motor 12 of brake device 14 and the torque of DC generator 17 of pull-out device 9 are controlled.
Patent JP-H02211506-A (JP)
Title: Pressure reducing valve
Inventor: WATANABE KENICHI
IPC: G05D16/10
Filed: 1989-02-10
Abstract: PURPOSE:To prevent a chatterning phenomenon by detecting a pressure working on the under side of a diaphragm from the inside of a sub-passage. CONSTITUTION:In the case of a large pressure reducing rate, when a main valve 18 minutely opens, and a high pressure fluid on a primary side flows through a valve port 14 to a secondary side 16, the fluid flows to a normal passage and a sub-passage 70. The normal passage has large capacity proportionally to a fluid quantity from the valve port 14, and when the pressure is reduced, the pressure inside the passage fluctuates. On the other hand, the sub-passage 70 has the small capacity, the passage at an output side edge is narrowed, and the pressure inside the passage hardly fluctuates. The stable pressure is transmitted through a secondary pressure detecting passage 34 to the under side of a diaphragm 28, and a pilot valve 26 is stably opened/closed. Consequently thereafter a piston 20 is not sharply operated even when the small quantity of fluid flows, the main value 18 does not sharply open/close, and the pressure can be stably reduced.
Patent JP-H08205228-A (JP)
Title: Position registering method
Inventor: KUNO YUTAKA
IPC: H04W60/00
Filed: 1995-01-30
Abstract: PURPOSE: To efficiently store position registering signal traffic and incoming call traffic in a system by adaptively setting a position registration area corresponding to the ratio of the position registering signal traffic and the incoming call traffic. CONSTITUTION: While paying attention to the deviation of the time zones of the peaks of position registration traffic and speech traffic, the position registration area is adaptively set to be wide at the peak time of position registration traffic and to be narrow at the peak time of speech traffic. When the incoming call (speech) traffic is relatively less in the time zone when the movement gets peak, the traffic of a position registration request signal is suppressed by widening the position registration area and only when it is really required for call incoming (mainly when a power source is turned on), the position registration request signal is transmitted. Oppositely, when the incoming call traffic gets to a peak, the position registration area is set narrow so that the incoming call traffic can be stored while being suppressed.
Patent JP-H05235302-A (JP)
Title: Manufacture of semiconductor device
Inventor: SATO SHINICHI
IPC: H01L21/8244
Filed: 1992-02-19
Abstract: PURPOSE:To provide a semiconductor device which achieves a microscopic cell size and electrically stable memory cells, by forming a diffusion layer under the electrode with the gate electrode as a mask. CONSTITUTION:After depositing, for instance, a WSi layer 8 on polysilicon 4a, a gate electrode 12 is patterned into a desired shape by a photoetching process. Then, with the gate electrode 12 as a mask, for instance, phosphorus is implanted into a silicon substrate 1, and thereafter with the gate electrode 12 and a side wall 9 as a mask, for instance, As is implanted into the silicon substrate 1. Subsequently, by an anneal process for about 20 minutes, at about 900 deg.C in a nitrogen gas atmosphere, phosphorus is thermally diffused from the polysilicon, or the gate electrode, into the polysilicon substrate 1 under the gate electrode 12 to form a diffusion layer 10 and an impurity diffusion region 11 having an LDD structure. This eliminates disconnection of the impurity layer and the impurity diffusion region.
Patent JP-H01207985-A (JP)
Title: Semiconductor laser equipment
Inventor: IKEDA SOTOMITSU
IPC: H01S5/00
Filed: 1988-02-16
Abstract: PURPOSE:To decrease damage at edge surfaces, to stabilize a transverse mode, to keep a threshold current from rising and to restrain a light emission efficiency from decreasing, by making the longitudinal direction of a stripe active area at right angle to light resonance surfaces. CONSTITUTION:There is a stripe active area 28 which seemingly has a large upward refractive index, inside a laser resonance 27 which is made of resonance surfaces 25 and 26. A window 29 for current injection is formed to cross a stripe diagonally. Current is injected into the center of the stripe active area so that a peak of an injection carrier density distribution does not concentrate upon one place. A refractive index distribution is made asymmetrical inside the active area by using a plasma effect and the light is deflected toward a high retractive index side to gain an oblique output light. By this, there is no trouble since the longitudinal direction of the stripe active area is at right angle to the resonance surface. Therefore, damage at edge surfaces is decreased, a transverse mode is stabilized, a shreshold current is restrained from rising and a light emission effect is restrained from decreasing.
Patent JP-H08217449-A (JP)
Title: Method of extracting metals from residual ash after petroleum combustion
Inventor: MUTSUKAWA NOBUAKI
IPC: C22B7/02
Filed: 1995-02-21
Abstract: PURPOSE: To recover valuable metals from the combustion ash excluded from the thermoelectric power station at low energy cost through easy operations by treating the ash after combustion of metal-containing petroleum with an acidic aqueous solution containing hydrogen peroxide, and to contribute to reduction of electric power generating cost. CONSTITUTION: An acidic aqueous solution of 0.5-3.0pH, containing 0.1-10wt.% of hydrogen peroxide and 0.01-5wt.% of an acid, is used as an extractant to allow the ash after petroleum combustion to contact with the acidic solution at room temperature or, when needed, at 30-90 deg.C. The extraction solution is adjusted in its pH to 7-9, then an ammonium salt is added precipitate ammonium vanadate and the residual solution is cooled down to crystallize out the nickel salt in the form of ammonium double salt.
Patent JP-S52115077-A (JP)
Title: Carrier roller device for belt conveyor
Inventor: MATSUBARA YUKIHIRO
IPC: B65G39/06
Filed: 1976-03-23
Abstract: PURPOSE: To provide a carrier roller device for belt conveyor having three rollers employing a roller coated with elastic material or the like and steel pipe roller surface-finished of 30 to 60% of ratio of the former to the latter to reduce the noise and cost. 
     COPYRIGHT: (C)1977,JPO&Japio
Patent JP-H07242947-A (JP)
Title: Production of high ductility hot rolled high tensile strength steel plate excellent in corrosion resistance
Inventor: IMAI NORIO
IPC: C21D9/46
Filed: 1994-03-02
Abstract: PURPOSE:To produce a hot rolled high tensile strength steel plate provided with excellent corrosion resistance, ductility, bore expandability and weldability. CONSTITUTION:This is a method for producing a high ductility hot rolled high tensile strength steel plate excellent in corrosion resistance and bore expandability in which a steel having a compsn. contg. 0.05 to 0.25% C, <=2.5% Si, <=2.5% sol. Al, 0.8 to 2.5% Mn, 0.10 to 0.80% Cu, 0.020 to 0.15% P and 0.01 to 0.50% Ni and satisfying (So+Al) >=1.0 is treated in the following process to form its structure into a one essentially consisting of polygonal ferrite and contg. retained austenite by >=5% in a volume ratio. It is held under heating to 1000 to 1100 deg.C and is immediately subjected to hot rough rolling at >=50% total draft, and the rough rolling is finished at 880 to 940 deg.C. Successively, it is subjected to finish rolling at >=60% total draft, and the finish rolling is ended at 780 to 840 deg.C. Next, it is subjected to accelerated cooling to 300 to 450 deg.C at 10 to 50 deg.C/s cooling rate and is coiled. The same steel may be incorporated with specified amounts of one or more kinds among Ca, Zr, rare earth elements, Nb, Ti and V.