baber/WOPTO huggingface dataset:
Patent JP-H11233821-A (JP)
Title: Gallium nitride compound semiconductor device
Inventor: ASAI MAKOTO
IPC: H01L33/32
Filed: 1998-02-09
Abstract: PROBLEM TO BE SOLVED: To provide a light emitting device of high luminous intensity by a method wherein a mutual relation between the thickness of a P clad layer and the luminous intensity of a gallium nitride compound semiconductor device is made clear. SOLUTION: Gallium nitride compound semiconductor layers are laminated on a substrate for the formation of a light emitting device, wherein a P-type Alx Ga1-x N clad layer (0<=x<1) is set as thick as 90 to 500 Å. First, the reason why the thickness is set above 90 Åis that carrier can not be trapped in an active layer if the thickness is below 90 Å. Second, the reason why the thickness is set below 500 Å is that strong stress is imposed on the active layer if the thickness is above 500 Å, because the active layer and the P-clad layer are different from each other in lattice constant. Or, dislocations are generated in the P-type clad layer due to lattice mismatching, so that the P-clad layer and a P contact layer can not be well improved in crystal structure as desired.
Patent JP-S58164741-A (JP)
Title: Induction melting method of metal
Inventor: SAITOU TOSHIAKI
IPC: C22B9/16
Filed: 1982-03-23
Abstract: PURPOSE:To prevent suitably refractory particles of a crucible from mixing with molten metal by melting a rodlike material to be melted by induction heating while suspending the material without bringing it into contact with the inner wall of the crucible. CONSTITUTION:A crucible 2 is placed in a high frequency coil 1, and a rodlike material 3 to be melted is suspended from a vertically movable holder 4 and put in the crucible 2 without bringing the material 3 into contact with the inner bottom and the inner wall of the crucible 2. The diameter of the material 3 corresponds to about 1/2 of the inside diameter of the crucible 2. High frequency induced electricity is then supplied in vacuum or an inert atmosphere to melt the material 3. By this method nonmetallic particles of zirconia or the like of the crucible 2 can be prevented from mixing with the molten metal.
Patent JP-H02223700-A (JP)
Title: Blower
Inventor: OKUDAIRA YUZO
IPC: F04D29/66
Filed: 1989-02-23
Abstract: PURPOSE:To reduce an amount of noise generated from the air inlet and outlet of a blower by a method wherein a microphone, a speaker, an amplifier, and a control circuit are mounted in a flow passage or to the air inlet and outlet. CONSTITUTION:A motor 2, a moving vane 3 driven with the aid of the motor 2, a guide vane 4, and a heater 5 are disposed in a casing 1. A microphone 8, a speaker 11, an amplifier 10 for driving the speaker, and a control circuit 9 to control the phase and amplitude of an output signal from the microphone 8 are mounted in a flow passage or to an air inlet and outlet. Sound waves emitted from the speaker 11 erase sound waves generated from the motor 2 and the moving vane 3, resulting in the possibility to sharply reduce an amount of noise emitted through a suction port 6.
Patent JP-S59171162-A (JP)
Title: Manufacture of insulated gate field effect transistor
Inventor: MIZUMURA HISASHI
IPC: H01L29/78
Filed: 1983-03-17
Abstract: PURPOSE:To enable to obtain an insulation of good quality and well-controlled impurity distribution by implanting boron ions after forming a gate insulation film by ion-implanting P, As, or Sb to a gate region before forming the gate insulation film. CONSTITUTION:Before forming the gate insulation film, P, As, or Sb is ion- implanted 4 to the gate region. Next, the oxide film 3 of the surface is exfoliated, and then a gate oxide film 5 is formed. Boron is ion-implanted through the film 5. Thereafter, an MOSFET is formed by normal processes. In case of the ion implantation of P, As and Sb to the channel part, it is better to form the gate oxide film after ion implantation in order to prevent damage to the gate oxide film. On the other hand, in the case of boron ion implantation, it is better to ion implant after forming the gate oxide film, by considering the suck-out effect of boron into the oxide film in a later process of forming said film, in order not to much give damage to said film. Such a manner enables to obtain the MOSFET of high performance.
Patent JP-H01219153-A (JP)
Title: Machine parts made of oxidation-and heat-resisting cast iron and its production
Inventor: OBARA YASUSHI
IPC: C23C8/42
Filed: 1988-02-27
Abstract: PURPOSE:To obtain parts made of cast iron having sufficient mechanical proper ties and excellent in heat resistance and oxidation resistance by forming a boron diffusion and penetration layer on the surface of a stock and also forming a high Si-containing layer inside. CONSTITUTION:A cast-iron stock is subjected to boron penetration treatment by using molten salt containing Na2B4O7, K2B4O7, Li2B4O7 and SiC and/or B4C, and FeB, which a boron diffusion and penetration layer is formed on the stock surface, and further, a high-Si layer is formed inside. This cast iron has superior resistance to heat and oxidation, and machine parts made of this cast iron can contribute to energy saving.
Patent JP-H06294772-A (JP)
Title: Sensor for notifying presence of selected ion species in gas sample with signal
Inventor: DEBITSUDO KENIISU DEIBIIZU
IPC: G01N27/64
Filed: 1994-02-18
Abstract: PURPOSE: To provide an ion mobility sensor equipped with a means for informing the presence of a selected ion type in a gas sample using a signal. CONSTITUTION: Unidirectional electrical field is generated across the first and the second electrodes 16 and 18 of an ion mobility sensor. As a result, an ionization source 35 generates ions in the sensor and then a trigger control device 42 introduces the ions into an ionization zone 12 between a first and a second electrodes 16 and 18 at a time t1 . The ions arrive at the second electrode 18 at time t2 . Furthermore, a transformer impedance amplifier 38 converts an ion charge into a voltage signal. The presence of a selected ion type is identified through a circuit actuated with the trigger control device 42 at the time t2 . The output of the amplifier 38 is sent to an A/D converter 56 and then to a digital signal processor 58, thereby analyzing the ion type.
Patent JP-S57158824-A (JP)
Title: Optical connector
Inventor: YAMAZAKI TETSUYA
IPC: G02B6/38
Filed: 1981-03-27
Abstract: PURPOSE:To improve the connection precision and facilitate the production, by utilizing anisotropic etching of a silicon single crystal to form an optical fiber, a lens, a connector pin receiving groove on one silicon substrate. CONSTITUTION:A lens fixing groove 2 of refractive index distribution type, a fixing groove 3 for an optical fiber bare wire 6, and a fixing groove 4 for an  optical fiber coating wire 7 are formed cooxially on the surface of a substrate 1  where anisotropic etching of silicon single crystal is utilized, and these grooves  2, 3, and 4 are constituted in parallel as one unit, and receiving grooves 8, 8 for connector pins 11 are provided in both end parts of the substrate 1. In any of the grooves, the side wall consists of (111) plane of crystal and the bottom face consists of (100) plane of crystal, and a pair of these substrates are connected while matching optical axes to each other in end faces. When a lens having an odd-fold length of the 1/4 pitch is used as a lens 5, the light is transmitted surely even if a gap is generated in the connection part of lenses.
Patent JP-H06319249-A (JP)
Title: Hybrid type pulse motor endowed with torque characteristic of induction motor provided with divided induction winding
Inventor: TEIJIYU YASUSHI
IPC: H02K37/04
Filed: 1994-02-18
Abstract: PURPOSE:To provide a lightweight and miniature hybrid type pulse motor which operates at a stable speed and is high in a acceleration rate by providing a divided type one-body induction winding for a rotor to increase a generated torque and to improve a starting characteristic. CONSTITUTION:The conductor 6 of an induction winding is installed in the groove of the valley part of the iron core of a rotor, and each conductor 6 is connected to the short-circuit ring 7 of end face at both ends of the iron core 2 of a rotor and the common conductive short-circuit ring 8 in the outer surface of a magnet. The direction of a current in the induction winding cancels the current in part with each other between A and B of the common inductive short-circuit ring 8 to equivalently reduce a resistance, so that a copper loss is reduced and consequently the torque characteristic of an induction motor is improved and at the same time the efficiency thereof is increased. Further, a current flowing through the induction winding of a rotor due to a magnetic flux produced by a stator is allowed to flow through a pair of the other induction windings of a rotor as well as the induction winding of a rotor corresponding to a stator, thereby improving the torque characteristic.
Patent JP-S59170835-A (JP)
Title: Photosensitive resin composition
Inventor: FUJIKAWA JIYUNICHI
IPC: G03F7/037
Filed: 1983-03-17
Abstract: PURPOSE:To improve developability with water by using a compsn. contg. water- soluble or water-dispersible polyamide, a polymerizable unsatd. compd. having an ethylenic double bond, and a satd. compd. having SO3X or OSO3X groups and a specified mol wt., and each component having a specified proportion. CONSTITUTION:A photosensitive polyamide resin compsn. comprises (a) 100 pts.wt. polyamide soluble or dispersible in water; (b) 20-200pts.wt. polymerizable unsatd. compd. having an ethylenic double bond; (c) and 05-40pts.wt. satd. compd. having >=2,000mol.wt. and SO3X or OSO3X groups, X being Na, K, NH4, or the like. The component (a) is a polyamide copolymer consisting of polyoxyethylene composed of a polyether segment having 150-1,500mol.wt., and amino groups or carboxylic groups at the terminals, and 30-70wt% structural units composed of aliphatic dicarboxylic acids or diamines. Such compsn. has good image reproducibility with the components (a) and (b), and good water solubility with the component (C), and it can be used for a letterpress plate material as well as other plate materials.
Patent JP-H09234726-A (JP)
Title: Cement milk stirring and pressure feeding apparatus
Inventor: AKASHIMA MASAAKI
IPC: B28C7/00
Filed: 1996-03-01
Abstract: PROBLEM TO BE SOLVED: To provide a cement milk stirring and pressure feed apparatus preventing stirring blades from coming into contact with the inside of a casing and easy to attach and detach the stirring blades. SOLUTION: The rotary shaft 24 passing through a stirring chamber 22 formed from a casing and supported in a rotatable manner and having a polygonal cross section is relatively pierced through the polygonal center hole corresponding to the cross-sectional shape of the shaft 24 and stirring blades 25 are supported on the rotary shaft 24 so as to be positioned within the stirring chamber 22 and a pair of collars 26a, 26b are fixed to the rotary shaft 24 so as to be positioned on both sides of the stirring blades 25 and one end parts of the respective collars 26a, 26b are fixed to the side surfaces of the stirring blades 25 in a close contact state.
Patent JP-H04281686-A (JP)
Title: Teletext receiver
Inventor: GOMIKAWA TAKAO
IPC: H04N7/035
Filed: 1991-03-11
Abstract: PURPOSE:To automate page turn-over and page feeding operation by allowing the operator to have only to select a teletext number by providing the subject receiver with a means registering the propriety of page turn-over and page feeding operation at the start of offer. CONSTITUTION:A microcomputer 5 in a teletext receiver transfers a program data succeding to a program data number to an offer program memory 10 when the program data number coincident with a designated program designation data by a keyboard 6 is found among data stored in a buffer memory 4 and transfers the data to a display picture memory 8 in the unit of pages. Moreover, an offer memory 11 designated an offer start page and whethet or not succeeding page feeding is implemented manually or automatically is connected to the microcomputer 5 and the designation information is registered by the keyboard 6. Thus, the teletext broardcast is enjoyed with out a troublesome operation by registering the initial offer page and the page feeding method in advance.
Patent JP-S62203432-A (JP)
Title: Echo canceller
Inventor: MINAMI SHIGENOBU
IPC: H03H21/00
Filed: 1986-03-04
Abstract: PURPOSE:To attain the echo canceller for pseudo stereo sound at low cost by applying arithmetic to an estimated tap coefficient in added information different in the part, at the time of added information is changed so as to set initially a tap coefficient against a variation in an echo line. CONSTITUTION:When the location of a caller changes, since the deterioration in the cancelling quantity is caused, the relation of characteristic between three consecutive blocks viewing an echo path from the echo canceller is obtained and in using the relation, when the caller location is changed, the estimated tap coefficient at the past location of the caller is used to apply initial set to the taps coefficient. Through the operation above, the continuity of the estimated tap coefficient when the location of caller changes to prevent the deterioration in the cancelling quantity. A memory 110 stores the past taps coefficient for this processing, and a tap coefficient setting section, when the added information changes, uses the present tap coefficient and the tap coefficient in a memory to calculate a new tape coefficient thereby applying initial reset to an adaptive filter 108.
Patent JP-H11239423-A (JP)
Title: Paddy field level regulator
Inventor: ONODERA TSUNEO
IPC: A01G25/00
Filed: 1998-02-26
Abstract: PROBLEM TO BE SOLVED: To inexpensively provide the subject regulator excellent in workability and capable of supplying service water stably throughout the paddy field and of automatically maintaining the paddy field surface at a constant level. SOLUTION: This level regulator is such one as to be set up midway of a water supply pipe embedded along a farm road and equipped with a service water inflow section 63 connected to an upstream side water supply pipe 51U, a service water outflow section 64 connected to a downstream side water supply pipe 51L, and a cultivation area water supply/drainage section 61 communicating, via a backflow-proofing barrage 65, with a cultivation area; wherein the service water outflow section 64 is equipped with a drain valve 66 openable in the vicinity of the bottom of a water supply/drainage measuring box 60 and a level regulating barrage 67 opening on the upper part of the box 60 and capable of height regulation.
Patent JP-H06255491-A (JP)
Title: Safety fence with movable gate
Inventor: MOMOMOTO AKIO
IPC: B61L29/02
Filed: 1993-03-05
Abstract: PURPOSE:To prevent passengers from falling down over a rail road, and also prevent the occurrence of scraping accidents with rolling stocks and the like by setting each safety fence along the peripheral section of a platform at the side of a rail road, and thereby calling passengers' attention. CONSTITUTION:A movable gate 1 is disposed at the main body case 2 of a safety fence in such a way as to be freely put in/out in the horizontal direction. And a guide rail 4 with which a sleeve 3 is engaged, supports the movable gate 1 where the sleeve is fixedly provided in the main body case 2 while being provided close to the rear end of the movable gate 1, and concurrently guides the movable gate 1 when the gate is moved. Moreover, the rear end of the movable gate 1 is pushed in/pulled out, so that the movable gate 1 is opened/ closed with a cylinder 6 driven where one end of the cylinder is connected to the rear end of the movable gate 1, and the other end of the cylinder is fixed to one end of the main body case 2.
Patent JP-S57160394-A (JP)
Title: Protection of motor
Inventor: HORIUCHI NORIMITSU
IPC: H02P5/74
Filed: 1981-03-30
Abstract: PURPOSE:To protect a motor, by sampling load current at a plurality of motors, anticipating a next sampling value according to a variation between present and previous values, and reducing operation at overload. CONSTITUTION:A plurality of induction motors 1 in combination with overload relays 5 are provided to operate cooperatively during a process. A current transformer 6 detects each load current of motors 1. A protection 9 with first- stage alarm and second-stage trip having arithmetic function is supplied with the load current. The load current is sampled within the protection 9. The next sampling value is anticipated according to a variation between present and previous values. A corrective signal is produced at a process controller 10 to limit the load when there is a possibility of overload. This nullifies loss time during operation and protects the motor from overloading.
Patent JP-H06260615-A (JP)
Title: Semiconductor memory device with thin-film transistor and its manufacture
Inventor: OKAMOTO YUTAKA
IPC: H01L21/265
Filed: 1993-03-05
Abstract: PURPOSE:To provide a semiconductor memory device with TFT which can improve software error resistance without causing fluctuation of a threshold voltage and increase in wiring resistance and without increasing the memory cell region. CONSTITUTION:A second conductive layer 18 which becomes the gate electrode of a thin-film transistor TFT has a relatively low resistance at a part 40 virtually corresponding to the channel part of the TFT and has a relatively high resistance at a part near the connection part with a first conductive layer 12 which becomes the gate electrode of a drive transistor. After a second conductive layer 18 which becomes the gate electrode of TFT, an impurity with a low concentration is first doped into the layer and then an impurity with a relatively high concentration is selectively doped at the part 40 virtually corresponding to the channel part of TFT at least in the conductive layer. Lowconcentration impurity doping is performed by the ionimplantation method and it is desirable that the amount of dose on ion implantation should be equal to 1X10<13>cm<-2>-2X10<14>cm<-2>.
Patent JP-S63212295-A (JP)
Title: Head set device for microphone
Inventor: ITABASHI YUJI
IPC: H04R1/00
Filed: 1987-02-27
Abstract: PURPOSE:To use only one device by attaching surface fasteners on a pad and a band case and providing a removing fin in the back part of the pad to attach the new and clean pad at the time of changing the user of the device. CONSTITUTION:The pad 17 and the band case 16 are mutually removably attached by the surface fasteners 16a, 17a and the removing fin 17b is disposed at the back part of the pad 17. The user pulls the removing fin 17b after the use to take the engagement disengage the surface fastener parts 16a, 17a and remove the pad 17. A next user attached the new pad 17 to the band case 16 and uses the clean pad 17. Thereby, since even at the time of changing the user, the pad 17 is removed from the band case 16 and the clean pad 17 is newly attached to use only one device, a low cost and little labor are realized.
Patent JP-S57161748-A (JP)
Title: Electrostatic recording body for pressure fixation
Inventor: OKA AKINORI
IPC: G03G5/02
Filed: 1981-03-30
Abstract: PURPOSE:To obtain the titled recording body which has superior recording characteristics and offected with less fogging by specifying the surface smoothness of an electrostatic recording resin layer formed by using polyester resin and anhydrous aluminum silicate. CONSTITUTION:One or both surfaces of a base which has 10<5>-10<8> surface resistibility are coated with paint for an electrostatic recording resin layer which contains 80-50wt% polyester resin and 20-50wt% anhydrous aluminum having >=1.5mum mean grain size, and then the paint is dried to form the electrostatic recording resin layer which has <=30sec surface smoothness specified by Oji laboratory system Beckmann smoothness. Consequently, excellent record with the 10<5>-10<8> surface electric resistibility range of a low resistance layer is obtained and a humidity range suitable for practical use is increased while this recording medium is advantageous in manufacture.
Patent JP-S59173392-A (JP)
Inventor: SUGI TAKUMI
IPC: D21C5/02
Filed: 1983-03-18
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-H08238249-A (JP)
Title: Auxiliary apparatus for endoscope-oriented operation
Inventor: KIRA HITOSHI
IPC: A61B17/28
Filed: 1995-03-06
Abstract: PURPOSE: To secure an operation field observable with an endoscope by a method wherein a plurality of press discharge element members are arranged to open or close side ways with respect to the direction of the visual field of the endoscope and an operation of expanding the press discharge element member is performed by a hand side operating section to exclude an organic tissue by pressing it. CONSTITUTION: In an auxiliary apparatus (retractor) 1 for endoscope-oriented operation, the body thereof is made up of a slender inserting part 2 to be inserted in vivo, an arm part 3 provided vertical to a base end part of the inserting part 2 and a grip 4 connected to an extended side end of the arm part 3. In the case of using the retractor 1, as an operation trigger 17 is pulled up by an operator holding the grip 4, it 17 turns upward centering on a rotating shaft 18 while the rotary motion is converted into a linear motion of a drive rod 12. Then, when the drive rod 12 is pushed out to the tip side thereof, link members 13a-13c of a link mechanism 8 move wings 11a and 11b horizontally to expand them outward, thereby an operation field between the winds 11a and 11b is formed.
Patent JP-S61205809-A (JP)
Title: Apparatus for detecting posture of corrugated board piece in box manufacturing machine
Inventor: TAKENAKA HIROYUKI
IPC: G01B11/26
Filed: 1985-03-08
Abstract: PURPOSE:To make it possible to automatically detect the abnormality of the posture of a corrugated board piece, by mounting at least two or more of optical pickups, a feed speed signal generator and an operator. CONSTITUTION:A gap is provided between a corrugated board piece 1a and optical detection pickups 14 and reflected light is received during the passage of the board piece 1a but is not received when said board piece 1a is detached. When the board piece 1a obliquely runs, said board piece 1a is not detected from voltage VN when a switch was tuned ON upon the detection of the board piece 1a and the timing changed over to voltage VF, when the switch was turned OFF, is shifted to generate time differences DELTAt1, DELTAt2 which are, in turn, detected by the pickups 14. These time differences correspond to the inclination quantity of the board piece 1a. The inclination quantity tan theta (angle theta of inclination) is obtained by a formula V.DELTAt/B (wherein V is the running speed of the board piece 1a and B is the installation interval of the pickups 14). Next, when calculation is carried out by an arithmetic unit 16, the output signal confirming the oblique running state of the board piece 1a can be taken out. Subsequently, this signal is transmitted to a posture control apparatus or an abnormal paper discharge apparatus to receive processing.
Patent JP-S52128002-A (JP)
Title: Connector control circuit
Inventor: YOSHIDA TAKAYUKI
IPC: H04Q3/00
Filed: 1976-04-20
Abstract: PURPOSE:To select and control the contact pass close relay for accelerating the connector control speed by means of one set of priority selection operation chain circuit with the connection request receiving relay.