baber/WOPTO huggingface dataset:
Patent JP-H01143869-A (JP)
Title: Tetrahydrofuranylpyrimidine derivative
Inventor: KURONO MASATSUNE
IPC: C07D405/12
Filed: 1987-11-30
Abstract: NEW MATERIAL:A tetrahydrofuranylpyrimidine derivative of formula I (R1 is H, alkyl, aralkyl, aryl; R2 is alkyl, hydroxyalkyl, polyhydroxyalkyl; R3, R4 are identical or different and alkyl, aralkyl, aryl). EXAMPLE:2,4-Diamino-6-hydroxy-5-[47-(3'-hydroxy-2,5'-dimethoxy-2'- methyltetrahydrofuranyl)]pyrimidine. USE:It is used as a synthetic intermediate of BH4, a medicine: 5,6,7,8tetrahydro-L- erythro-biopterin and its analogues. It can he simply and efficiently synthesized at inexpensive costs. PREPARATION:As shown in the reaction equations, the epoxide group in epoxy- tetrahydrofuran of formula II is cleaved with a compound of formula III to give the compound of formula I.
Patent JP-H02146034-A (JP)
Title: Silver halide photographic sensitive material for reversal process
Inventor: NISHIYAMA SHINGO
IPC: G03C1/035
Filed: 1988-11-28
Abstract: PURPOSE:To obtain a silver halide photographic sensitive material for reversal process having relatively high micro-contrast by constituting silver halide particles of the material of cores consisting substantially of AgBr and shells consisting substantially of AgIBr. CONSTITUTION:It has been found that a contrast of micro-picture obtd. by a reversal process is influenced greatly by the particle size of an original emulsion, degree of monodispere and AgI content of the particles, and distribution of iodine in the particles. More desirable result may be obtd., the smaller the particle size, the smaller the degree of monodisperse (expressed by a CV value (coefft. of variance)), the smaller the mean iodine content of particles is. Accordingly, cores consisting substantially of AgBr are used, constituting the shells substantially of AgIBr. Preferred proportion (by molar ratio) of Ag amt. in the core to that of the shell is 1:(1-10), and the shell is preferred to be constituted of >=2 layers. Thus, a silver halide photographic sensitive material for reversal process capable of providing a relatively high micro-contrast is obtd.
Patent JP-H05139855-A (JP)
Title: Fiber-reinforced composite ceramic
Inventor: TAKAO MINORU
IPC: C04B35/80
Filed: 1991-11-15
Abstract: PURPOSE:To obtain a composite ceramic consisting of a void-free, sufficiently dense sound sintered compact by combining a matrix ceramic and fibers so that the fibers shrink in concert with the shrinkage of the matrix ceramic in its sintering. CONSTITUTION:The objective fiber-reinforced composite ceramic with fibers 2 combined with a ceramic 3 as the matrix. The fibers 2 are ensured to shrink in concert with the shrinkage of the matrix ceramic 3 in its sintering. For this purpose, it is effective that a linear material to be used as the fibers be brought to a shrinkable form (e.g. coiled, bellows, deflected form); also, a shrinkable material may be used as the linear material.
Patent JP-H11192705-A (JP)
Title: Scalable wide array ink jet printing head and its production
Inventor: BEERLING TIMOTHY E
IPC: B41J2/05
Filed: 1998-10-22
Abstract: PROBLEM TO BE SOLVED: To provide a scalable wide array printing head. SOLUTION: A scalable wide array printing head 12 is formed by mounting a large number of thermal ink jet printing heads 18 on a support substrate 20. The printing head 12 is mounted on one surface of the support 20 and the opposite surface 72 of the support 20 is loaded with logical ICs 29 and drive ICs 30. Mutual connection 90 is formed through the support substrate and the printing head 12 is electrically connected to the logical ICs and the drive ICs. The support substrate 20 is formed from silicon and etched in order to demarcate ink supply slots 42. The mounting processing of solder bumps 78 is used in order to mount the printing head 12 on the support substrate 20. This processing is operated so as to align the printing heads 18 and solder form a fluid boundary around each of the ink slots 32 of the printing head 12.
Patent JP-2000134040-A (JP)
Title: Fm demodulator
Inventor: HORIIKE YOSHIO
IPC: H03D3/06
Filed: 1998-10-22
Abstract: PROBLEM TO BE SOLVED: To obtain a large demodulation output even when the frequency shift is small. SOLUTION: An FM demodulator has a delay means 4 that delays a received signal by a prescribed time, a multiplication means 5 that multiplies the received signal by a signal from the delay means 4, a filter that extracts a demodulation output from an output of the multiplication means 5, and a frequency detection means 3 that provides an output of a signal in accordance with the frequency of the received signal. The delay time of the delay means 4 is controlled with a signal from the frequency detection means 3.
Patent JP-H09147699-A (JP)
Title: Vacuum valve
Inventor: SOMEI HIROMICHI
IPC: H01H33/66
Filed: 1995-11-20
Abstract: PROBLEM TO BE SOLVED: To increase the breaking capacity of a vacuum valve by forming a pair of electrode, of which contact is formed of a disc-shaped center part and a ring-shaped peripheral part, so as to form vertical magnetic electrodes for separately generating an axial magnetic field. SOLUTION: When a current carrying shaft is driven by an external operating mechanism so as to open a contact of a vacuum valve so as to break the current, arc is firstly ignited in a ring-shaped contact 33. At this stage, the current is flowed to a tip of a coil electrode 31 of the peripheral part, and a coil electrode 32 of the center part is not operated. With an increase of the current, the arc is moved to a contact 34 of the center part by the self-pinching force. A magnetic field between the contacts at a sum of a first and a second coils is thereby formed, and it is effective in the dispersion of the arc. Consequently, in comparison with the conventional vertical magnetic field electrode, a current area for maintaining the arc in the dispersing condition is increased so as to improve the breaking performance.
Patent JP-H02148096-A (JP)
Title: Integrated keyboard and its manufacture
Inventor: ARAI YONEAKI
IPC: G10H1/34
Filed: 1988-11-30
Abstract: PURPOSE:To reduce the manufacturing cost of a keyboard by bringing plural white keys and plural black keys to unified molding simultaneously by the same molding tool, and attaching simply plural respective white keys and black keys to a keyboard chassis in a state that each white key and black key is positioned correctly. CONSTITUTION:In an integrated keyboard, plural white keys 1 and black keys 2 of a one octave portion C-SC are connected on their base end parts 1a, 2a side and formed as one body by two-color forming. At the time point when molding of this integrated keyboard, each white key 1 is in an erected state that the push key face 1b is positioned upward, each black key 2 is in an inverted state that the push key face 2b is positioned downward, and also, on the plane, each white key 1 and each black key 2 are placed in a state that they are opposed to its base end parts 1a, 2a to each other. Also, each white key 1 and each black key 2 are connected by band-like parts 4, 5 connected by a thin wall part 3, respectively, and the base end part 1a of each white key 1 and the base end part 2a of each black key 2 are coupled to the band-like parts 4, 5 through thin wall parts 6, 7.
Patent JP-H05271417-A (JP)
Title: Novel organosilicon compound and composition containing the same
IPC: C08F2/50
Filed: 1992-11-11
Abstract: PURPOSE: To obtain an composition useful in UV-curable release coatings by using an organosilicon compound with a siloxane portion and a specified group bonded to an Si atom via an Si-C-O bond.  
     CONSTITUTION: There is provided an organosilicon compound with a siloxane portion and at least one group represented by formula I [R' is an up to 8C divalent hydrocarbon residue or the formula: -R 0 -(OR o ) n  (R o  is an up to 6C alkylene; and n is 1-12); and R" is hydrogen or an up to 10C alkyl] and bonded to a silicon atom via an Si-C-O bond. This compound is desirably one having at least one unit of formula II or one having a unit of formula II and a unit of formula III. In formulas II and III, R' and R" are as defined in formula I; R is an up to 18C monovalent (substituted) hydrocarbon residue; X is an up to 8C hydrocarbonoxy; Y is a group of formula IV (R' links the silicon atom in unit of formula II to the silicon atom of group Y); a=1-14; b and b' are each 0-3; c=0 or 1; and d=0-2. 
     COPYRIGHT: (C)1993,JPO
Patent JP-H11205197-A (JP)
Title: Device and method for reducing number of error signal bit
Inventor: RICHARD X GU
IPC: H04L25/03
Filed: 1998-10-22
Abstract: PROBLEM TO BE SOLVED: To reduce the constitution of a filter unit by reducing the number of bits for indicating error signals inside a transceiver unit provided with an adaptive equalizer filter unit. SOLUTION: This device 30 replaces the plural most significant signal bits e1 -e4 of input error signals with a single bit e'1 through an AND gate 42, an OR gate 41 and a switch unit 43 and transfers a code signal bit e0 and low-order signal bits e5 -e7 as an output code signal bit e'0 and output error signals e'2 -e'4 without changing them. Also, the control terminal of the switch unit 43 is connected to the code signal bit e0 . Because of the reduction of the number of the signal bits, the number of the constituting elements of a multiplication unit inside an adaptive filter unit is reduced. The result of the reduction does not affect the balance value of the error signals, however, increases the time of reaching the balance value.
Patent JP-2001128373-A (JP)
Title: Feeder for electronic apparatus
Inventor: SHINPO NOBUYUKI
IPC: H02J7/00
Filed: 1999-10-22
Abstract: PROBLEM TO BE SOLVED: To provide a feeder, capable of preventing malfunction in a feed terminal at feeding of power to an apparatus to be powered. SOLUTION: This feeder 2 is provided with a feed terminal 10 and a data communication part 6, and an apparatus 3 to be powered is provided with a feed terminal 14 and a data communication part 7. At feeding, both the apparatuses verify a mated apparatus through data communications to conduct feeding. From the viewpoint of the feeder, the feeder verifies whether the mated apparatus to be connected is the apparatus to be powered, and then feed operation is continued, so that malfunctions in the apparatus can be prevented, even if other conductive substances infiltrate into the feed terminal, avoid failures of the apparatus due to heating, and eliminate wasteful, energy consumption.
Patent JP-H08161431-A (JP)
Title: Character recognition device
Inventor: HAMANAKA MASAHIKO
IPC: G06K9/68
Filed: 1994-12-06
Abstract: PURPOSE: To provide the character recognition device with which recognition accuracy is improved and high-speed processing is enabled. CONSTITUTION: A normalizing feature extracting part 12 acquires a normalizing feature from a character image from a character image storage part 11. A complex degree calculating part 13 calculates the complex degree of the character image based on the normalizing feature. A broad classification dimension number deciding part 14 decides the dimension numbers for broad classification based on the complex degree. A narrow classification feature pattern generating part 15 generates a feature pattern for narrow classification based on the normalizing feature. A feature pattern generating part 16 for broad classification generates a feature pattern for broad classification corresponding to the dimension numbers for broad classification from the feature pattern for narrow classification.  A broad classifying part 18 inspects similarity between the feature pattern for broad classification and a standard feature pattern corresponding to the dimension numbers read out from a dictionary storage part 17 and selects a prescribed number of character candidates. A narrow classifying part 19 inspects similarity between the feature pattern for narrow classification and the standard feature pattern corresponding to the dimension numbers read from the dictionary storage part 17 and performs the identification of the character.
Patent JP-H02188568-A (JP)
Title: Antiatherosclerosis diaryl compound
Inventor: UIRIAMU POORU JIYAKUSON
IPC: C07C275/28
Filed: 1989-11-20
Abstract: The present invention is concerned with the compound of formula (I)and salts, solvates and physiologically functional derivatives thereof, processes for the preparation of this compound, pharmaceutical formulations containing it and their use in medicine.
Patent JP-2000129439-A (JP)
Title: Sputtering apparatus and method
Inventor: BUCHANAN KEITH EDWARD
IPC: C23C14/34
Filed: 1999-10-25
Abstract: PROBLEM TO BE SOLVED: To ensure good surface uniformity as well as to attain excellent coating of a basal part. SOLUTION: A negatively biased body to be worked on a support part 14 is subjected to sputtering from one or more targets 12. The targets 12 and the support part 14 have been disposed in a vacuum chamber 11 housing plasma and having a high-frequency coil 15 for promoting the ionization of the sputtering material. Electric power is supplied to the high-frequency coil at frequency in the range of 100 kHz to 2 MHz and a DC magnetic field is induced near the high-frequency coil.
Patent JP-2001122191-A (JP)
Title: Bearing device for water jet propulsion machine
Inventor: KATAYAMA JUNICHI
IPC: B63H11/08
Filed: 1999-10-25
Abstract: PROBLEM TO BE SOLVED: To provide a compact bearing device preventing interfusion of water of a water jet propulsion machine with lubricating oil of the bearing device. SOLUTION: In this bearing device, a bearing 16 pivotally supports a main shaft 13 of an impeller 6 of the water jet propulsion machine 1 penetrating a side wall of a suction casing 3, a mechanical seal 17 axially seals water from the suction casing 3, and a pair of oil seals 18, 18 tightly shuts the lubricating oil of the bearing 16. The inner circumferential face of the mechanical seal 17 is formed with a water removal chamber 19, a mechanical seal case 15 housing the mechanical seal 17 is formed with a venthole 20 to the air communicating with an upper part of the removal chamber 19 and a drain hole 21 communicating with a lower part of the removal chamber 19.  In spite of the compact device, water penetrating from a gap of the mechanical seal 17 is discharged outside the mechanical seal case 15 from the removal chamber 19 open to atmospheric pressure to prevent inflow of the water into bearing 16.
Patent JP-H01206571-A (JP)
Title: Overcharge protection for nonaqueous secondary cell
Inventor: KUJIKARAIRU EMU ABURAHAMU
IPC: H01M10/05
Filed: 1988-11-29
Abstract: PURPOSE: To provide a chemical overcharge protecting means, by containing a nonaqueous solvent, in which at least one salt and the given concentration of a redox reagent are dissolved, in an electrolyte. CONSTITUTION: The electrolyte of a battery is a nonaqueous solvent or a nonaqueous solvent mixture in which one or more salt and a redox reagent are dissolved. The redox reagent is contained by sufficient quantity for maintaining adequate material transport to the desired fixed overcharge current of a battery, and is metallocene in which a cyclic π-electron donor is bonded to a metal atom to form a complex in a formula I, where M: metal such as Fe, Co, Ni, Cr, and W, R<1> -R<6> : H, an alkyl group such as, methyl, ethyl, and butyl. The metallocene is selected from a group composed of ferrocene or n- butyl ferrocene having a structural formula in a formula II. A battery is formed of the electrolyte, an Li cathode, and a TiS3 anode.
Patent JP-H06145358-A (JP)
Title: Polyvalene metal salt of phosphate-modified organo@(3754/24)poly) siloxane and its production
Inventor: IHARA TAKESHI
IPC: A61K8/00
Filed: 1992-11-12
Abstract: PURPOSE:To obtain the title salt which has excellent smoothness, stickiness, etc., in addition to the excellent characteristics, e.g. water repellency, inherent in the conventional silicone and which is useful as the material of cosmetics. CONSTITUTION:The title salt is represented by the general formula: (Q)2B wherein Q is a group linked to B through a silicon atom provided at least one of z Q' s is -R<2>-(OR<1>)p-PO4M2/m and the rest are each or is -R<2>-(OR<1>)p-OH wherein R<1> is a 2-4C linear or branched alkylene group; R<2> is an optionally hydroxylated 1-50C linear or branched alkylene group; p is 0-200; M is an alkaline earth metal or a divalent or higher transition metal; and m is the valency of M; B is an organo(poly)siloxane residue having an alkyl-Si bond; and z is 1 or higher.
Patent JP-H09146209-A (JP)
Title: Silver halide photographic sensitive material
Inventor: IIZUKA HIROYUKI
IPC: C09B23/00
Filed: 1995-11-21
Abstract: PROBLEM TO BE SOLVED: To obtain high sensitivity and to improve remaining color contamination by making at least one silver halide emulsion layer contains silver halide particles that are spectrally sensitized with specific photosensitive coloring matter. SOLUTION: Of the silver halide photographic sensitive material which has photosensitive silver halide emulsion layers on a base, at least one of the silver halide emulsion layers contains silver halide particles which are spectrally sensitized with the photosensitive coloring matter shown by the formula. In the formula, R1 is an aliphatic group substituted by a water-soluble group and R2 is an aliphatic group. Further, R is a halogen atom, Z1 and Z2 are atom groups forming 5- or 6-memberd heterocycle groups that may be condensed with a carbon ring or heterocycle. Furthermore, (r) and (s) are integers which are 0 or 1; and X1 is ions needed to neutralize charges in a molecule, and m1 is the number of ions needed to neutralize the charges in the molecule.
Patent JP-S62164666-A (JP)
Inventor: FUORUKERU KOTSUHO
IPC: C07D213/75
Filed: 1986-12-20
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-H06128074-A (JP)
Title: Method for bringing ferroelectric single crystal to single domain
Inventor: FURUKAWA YASUNORI
IPC: C30B9/06
Filed: 1992-10-15
Abstract: PURPOSE:To provide a method enabling even a ferroelectric single crystal of complicated shape to be brought to a single domain effectively. CONSTITUTION:A ferroelectric single crystal 2 such as of KTA (KTiOAsO4) is embedded in compensating powder 8 similar in characteristics thereto, and a pair of electrodes 12 are set up on both ends of the powder. Then, while applying d.c. voltage on the electrodes, the single crystal is annealed from such a state as to be heated to a temperature higher than that at which the domain wall is movable to the Curie temperature or lower to make a poling treatment.
Patent JP-S63155634-A (JP)
Title: Alignment of wafer
Inventor: YAMAKAWA MASAHIRO
IPC: H01L21/68
Filed: 1986-12-18
Abstract: PURPOSE:To shorten the time required to position a wafer by a method wherein the wafer is positioned during the period to transfer the wafer from an accommodation case to a wafer chuck. CONSTITUTION:A wafer 14 on a transfer wafer-chuck 2 leaves an accommodation case 1 and rolls toward the direction A. When an orientation flat OF formed of the wafer 14 becomes in parallel with the transfer direction A during this transfer period, a sensor 3 detects this situation and stops a turning operation of the chuck 2 for turning the wafer. Because the positioning accuracy is not high in this case, the wafer 14 is turned a little at a position B for correction of the positioning discrepancy by a correction sensor 5. Then, the wafer 14 is sucked by an arm 4 and is transferred to a wafer chuck 6.
Patent JP-H08139228-A (JP)
Title: Resin-sealed semiconductor device
Inventor: FUKUI ATSUSHI
IPC: H01L23/28
Filed: 1994-11-11
Abstract: PURPOSE: To improve productivity and reliability and allow the use of conventional molding equipment by performing resin sealing by using a molding die without using potting resin. CONSTITUTION: A prescribed integrated circuit element 12 is bonded with conductive adhesive 30 on the element mounting part at the center of an integrated circuit mounting board 11, and the pad part on the integrated circuit element 12 is bonded with each wire bonding part 19 which is opened by a wiring hole 20 on a lead pattern 18 by bonding wire 31. Resin sealing is performed by putting the resin sealing part in the prescribed molding die. Then, ball solder 13 is formed at a ball solder forming part which is exposed at the bottom in lattice-shape. Thus, sealing resin body 14 is uniformly formed and a plurality of semiconductor device are manufactured at one time.
Patent JP-H03164256-A (JP)
Title: Ink jet head
Inventor: IKEDA KAZUE
IPC: B41J2/16
Filed: 1989-11-24
Abstract: PURPOSE:To manufacture a head of high impact precision at a high yield by a simple method wherein a discharge opening arranged surface is formed by cutting, and a discharge opening is installed at a position receding slightly from the discharge opening arranged surface. CONSTITUTION:A discharge energy generator 6, and electrode wirings 21, 22 are formed on a substrate 7. A lower layer photosensitive resin film 4 is laminated so that a part other than the discharge energy generator 6 is covered by the photosensitive resin film 4, and a part becoming a bottom surface of a discharge opening 1 and a liquid path 5 is formed. A photosensitive resin film 3 us laminated on the photosensitive resin film 4 to perform patterning by a specified pattern, and a part becoming one part of side wall of the liquid path 5 and the discharge opening 1 is formed. The photosensitive resin films 3, 4 are thermally cured, and a part of the bottom wall and side of the liquid path 5 and the discharge opening 1 which consists of the cured film is formed. A pattern is formed even on the surface of a board 8 with a photosensitive resin film 2, and is thermally cured to form a part becoming a roof part of the liquid path 5 and the discharge opening 1 which consist of the cured film. The boards 7, 8 are bonded to each other with adhesives to form a joint. After the adhesive is cured, the joint is cut at its specified position to form the edge of a head.
Patent JP-H01145860-A (JP)
Title: Manufacture of double-surface-gate type electrostatic induction thyristor
Inventor: SAITO MASAYUKI
IPC: H01L29/74
Filed: 1987-12-02
Abstract: PURPOSE:To improve the crystalline property of an epitaxially grown film, to decrease defects on a machined surfaces and to improve the yield rate of patterns, by performing adhesion, heating and sticking of the rear surfaces of the substrates of a semiconductor layer on the side of a cathode and a semiconductor layer on the side of an anode. CONSTITUTION:The surfaces of a semiconductor layer 10 on the side of a cathode and a semiconductor layer 20 on the side of an anode, which are not treated with ething, i.e., a rear surface 1a of an n<-> substrate 1 and a rear surface 5a of a p<-> substrate 5, are cleaned and activated. The rear surfaces 1a and 5a are brought into contact. The surfaces are baked for 30 minutes in an atmosphere of 100 deg.C or higher and stuck. Thus crystal lattices of the n<-> substrate 1 and the p<-> substrate 5 are regularly bonded and crystallized as a single crystal. After the sticking step, metallization with aluminum and the like and etching are performed, and cathode electrode 11, an anode electrode 12 and gate electrodes 13 and 14 are formed. Passivation is performed on the surface so as to form an oxide film and the like. Therefore, the numbers of exposures of the substrates, gate diffused layers or epitaxial layers to high temperature are decreased.