baber/WOPTO huggingface dataset:
Patent CA-1297533-C (CA)
Title: Voltage converter
Inventor: BHAGWAT PRADEEP M
IPC: H02M3/335
Filed: 1989-02-10
Granted: 1992-03-17
Abstract: ABSTRACT OF THE DISCLOSURE A voltage converter (100) converts a high voltage, low frequency input (120 volts at 60 Hz) to a low D.C. voltage output (0-30 volts). The voltage converter (100) initiallly rectifies the input to provide an intermediate high level D.C. voltage which facilitates operation of an oscillator (202) at a frequency of 25 KHz. A pair of MOSFETS (124 and 126) are alternately switched into operation at the 25 KHz frequency. Upon operation of MOSFET (124), the intermediate D.C. voltage functions as a first power source which is applied across and directs current in one direction through a primary winding (132) of a high frequency step-down transformer (134) and also charges a series-connected capacitor (152). Upon operation of MOSFET (126), capacitor (152) functions as a second power source which discharges to provide current through primary winding (132) in the opposite direction. Thus, the alternately switched operation of MOSFETS (124) and (126) in this manner facilitates the application of an alternating voltage at the frequency of 25 KHz which is stepped down to a secondary winding (142) of transformer (134) and is then rectified to provide the low D.C. voltage output of voltage converter (100). A pair of diodes (120 and 122) are provided to prevent undesirable oscillations from occurring within voltage converter (100) if a short should occur in any load connected to the output of the converter. In one embodiment (FIG. 4), a multivibrator (308) is controlled to turn off oscillator (202) in response to undesirable wide swings in the voltage of capacitor (152) resulting from an overload in the load to terminate operation of voltage converter (100). In other embodiments, a second capacitor (220 or 408) is charged simltaneously with capacitor (152) and functions as a third power source to bias the MOSFET (126) on when MOSFET (124) is off. A power buffer (600) is used to convert D.C. power to A.C. power at a prescribed output voltage and frequency. 3903P
Patent CA-1301894-C (CA)
Title: Apparatus and method for phase modulating optical signals in a fiber optic rotation sensor
Inventor: PAVLATH GEORGE A
IPC: G01C19/72
Filed: 1989-02-10
Granted: 1992-05-26
Abstract: ABSTRACT.            APPARATUS AND METHOD FOR PHASE   MODULATING OPTICAL SIGNALS IN A FIBER OPTIC ROTATION SENSOR The operating point of a fiber optic rotation sensor is shifted to obtain an increased sensitivity in the measurement of the Sagnac phase shift between counterpropagating beams in a sensing loop. The two counterpropagating optical waves are mixed for detecting interference of the waves to indicate the phase difference between them. The phase of the waves is modulated in accordance with a periodic function having a frequency equal to fs =  where t is the transit time for an optical wave in the sensing loop. The interference pattern of the two waves is periodically sampled at a frequency equal to the modulation frequency.
Patent CA-1333613-C (CA)
Title: Procede de preparation de solutions de sels insatures d'ammonium quaternaire sous pression
Inventor: LACROIX CHRISTIAN
IPC: C07C213/00
Filed: 1989-02-10
Granted: 1994-12-20
Abstract: Procédé de préparation de solutions aqueuses de sels insaturés d'ammonium quaternaire (I) répondant à la formule suivant: H2C = CH - C(O) - A - R3 - N+(R1)(R2)(R), X-, dans laquelle: - A est un atome d'oxygène ou un groupe NH, - R3 est un radical alkyle, linéaire ou ramifié, de 1 à 6 atomes de carbone, - R1, R2 et R, différents ou identiques, sont chacun un radical alkyle ou un radical aryle, - X est choisi parmi CI, Br, I, CH3-CO3 et CH3-SO4 à partir d'au moins un monomère acrylique (II) de formule H2C = CH - C(O) - A - R3 - N(R1)(R2) et d'au moins un agent quaternisant (III) de formule RX. La réaction est effectuée sous une pression absolue comprise entre 3 et 10 bars. Application à la préparation, avec une durée réduite, de solutions contenant peu d'impuretés.
Patent CA-1300387-C (CA)
Title: Refrigeration apparatus
Inventor: TAKIZAWA TAKASHI
IPC: F25B47/02
Filed: 1989-02-14
Granted: 1992-05-12
Abstract: ABSTRACT         The refrigeration apparatus according to the invention has a main refrigerant line comprising a compressor, a condenser which are installed outdoor, and a decompression device, an evaporator and a refrigerant flow rate control valve which are installed indoor, all connected in a loop.  The main refrigerant line is provided with an auxiliary refrigerant line that connects the input side of the decompression device in the main refrigerant line with the inlet side of the compressor via a bypass valve.  The lowering in the suction pressure of the compressor is detected if it happens, and the pressure is restored by opening the bypass valve by throttling the refrigerant flow rate control valve, so that the compressor may be kept on running.
Patent CA-1323816-C (CA)
Inventor: WILLIAMS BARRY W
IPC: A61K8/81
Filed: 1989-02-17
Granted: 1993-11-02
Abstract: ABSTRACT An improved permanent waving process is disclosed. The improved waving process produces hair styles characterized as bouncier, more full bodied with an open/looser pattern of curls. Furthermore, the waving process of the invention provides for improved humectant properties that results in significantly less maintenance than is typically required when conventional waving processes are used. This waving process is a step-by-step procedure involving the addition of a rearranger, a wrapping lotion, and a neutralizer, in combination with intermittent rinsing. The improved quality and settability of the hair is believed to be attributable to a synergistic effect of improved rearranging composition and an improved wrapping lotion. The rearranging composition comprises a homogenous mixture of a salt of thioglycolic acid and a homopolymer of methacrylamidopropyltrimethyl ammonium chloride (MAPTAC). A preferred rearranging composition includes a weight ratio of ammonium thioglycolate to monoethanolamine thioglycolate of from about 4:6 to about 7:3 and between about 1.0 to about 3.0% by weight of a cationic homopolymer of MAPTAC. The rearranging composition should also be pH adjusted to between about 3.0 and about 10.5. The improved wrapping lotion composition that comprises a homogenous mixture of a guar component and a salt of thioglycolic acid. A preferred wrapping lotion composition includes between about 0.2 and about 2.5% by weight of a nonionic hydroxypropylated guar and between about 0.3 and about 7.0% ammonium thioglycolate. The wrapping lotion composition should also be pH adjusted to between about 7.0 and about 10.5 and have a viscosity in the range from about 500 cps to about 12,000 cps.
Patent CA-1337558-C (CA)
Inventor: DEAR KENNETH MICHAEL
IPC: C07C49/784
Filed: 1989-03-17
Granted: 1995-11-14
Abstract: It is desired to find an alternative way to produce benzophenones or substituted benzophenones which does so selectively and avoids the problems of previous methods that use, for example, large amounts of an aluminum chloride catalyst or nitric acid.  In the invention process, a diphenyl methane starting material (DPM) in a hydrophobic phase is oxidized in a photolytic process by contact with an aqueous phase containing greater than 1 mole of HBr and at least 1.5 moles of H2O2, both per mole of DPM, the radiation being capable of dissociating bromine to its radicals, and especially using light of wavelength 600 to 250 nm. Preferably, a reaction temperature of around 50 to 65°C is used, the organic solvent comprising a suitably boiling chlorinated carbon or hydrocarbon.  The H2O2 is introduced progressively into the reaction mixture.  The benzophenone product is recovered substantially in the organic phase, whereas most of the bromine/bromide is retained in the aqueous phase which can be re-employed in a subsequent oxidation of DPM, possibly after restoration of the bromide to its initial concentration.  In a modification to the process, by suitably controlling the mole ratios of bromide and H2O2 to DPM at about 1:1:1, and preferably using a reaction temperature of about ambient to 35°C, the DPM can be substituted by a single bromine atom on the methane carbon also with good selectivity, instead of being oxidized to the benzophenone.
Patent CA-1320789-C (CA)
Title: Liquid crystalline polyesters
Inventor: SCHISSEL DAVID N
IPC: C08G63/60
Filed: 1989-04-27
Granted: 1993-07-27
Abstract: RD-18,334 LIQUID CRYSTALLINE POLYESTERS                   ABSTRACT OF THE DISCLOSURE         Liquid crystalline polyesters are provided employing 4,4'-dihydroxybiphenyls substituted with organo radicals which are intercondensed with bis(4-hydroxyphenyl)ether, iso- or terphthalic acid, and hydroxybenzoic acid.  The liquid crystalline polyesters have been found to have improved processing characteristics.
Patent CA-1305247-C (CA)
Title: Passive acoustic power spectra to monitor and control processing
Inventor: CODY GEORGE D
IPC: C10B55/10
Filed: 1989-06-12
Granted: 1992-07-14
Abstract: ABSTRACT OF THE DISCLOSURE         A process for the detection and measurement of wall coke at a specific location in a fluid bed coker through the measurement of the vibrations of the external shell of the coker at that location.
Patent CA-1334045-C (CA)
Inventor: MAST JAN H
IPC: D06P1/56
Filed: 1989-07-13
Granted: 1995-01-24
Abstract: Process for the bath pigmentation of leather, which com-prises dyeing the leather with pigment dispersions which contain a compound of the formula (I)                  (I) where Ar is benzene or naphthalene, X  is -CH2-CH2- and/or -CH2-CH(CH3)-, 0 to (m-1) of the radicals A are hydrogen, 1 to m  of the radicals A are benzoyl and/or naphthoyl, 1 to m  of the  radicals  A are  -CO-CH=CH-COOM and/or -CO-CH2-CH(SO3M)-COOM, where M is a cation, R1, R2 and R3 are hydrogen or alkyl of 1 to 14 carbon atoms, R is hydrogen and/or alkyl of 1 to 9 carbon atoms, n  is a number from 1 to 150 and m  is a number from 2 to 12, the pigment having an average particle size of 50 to 500, preferably 80 to 300, nm. By using these dispersions, which contain the pigments in a very finely divided form, it is possible to obtain thorough penetration of the leather with improved light fastness.
Patent CA-1312909-C (CA)
Title: Electron gun assembly having a reinforced heater tab with locating means
Inventor: HALE JOHN R
IPC: H01J1/18
Filed: 1989-07-20
Granted: 1993-01-19
Abstract: RCA 85,218 ABSTRACT OF THE DISCLOSURE           An electron gun assembly for use in a color CRT includes a pair of insulating support rods, three inline indirectly heated cathodes disposed between the support rods, a heater for each of the cathodes, and a pair of improved, reinforced heater tabs. The heater includes a pair of heater legs which are attached to the heater tabs. Heater bead straps are provided for attaching the heater tabs to the support rods.  The electron gun also includes a plurality of electrodes for focusing and accelerating an electron beam generated by the cathodes.  The reinforced heater tabs comprise a main body portion including a first and a second part.  Each of the parts is attached to one of the heater legs.  Each of the heater tabs has a pair of outwardly directed feet, each of which is connected to one of the parts of the main body portion by a pair of substantially orthogonal legs extending therebetween.  The reinforced heater tabs include a first reinforcing structure extending between the parts of the main body portion and the legs, and a second reinforcing structure extending between the legs and the feet, to maintain the rigidity of the heater tabs.  The first reinforcing structure also provides locating means for a conformal heater tab associated with the center cathode of the electron gun.
Patent CA-1334150-C (CA)
Inventor: KAGEYAMA MINORU
IPC: A21C3/02
Filed: 1989-07-25
Granted: 1995-01-31
Abstract: A method is provided for producing bread of a good quality from frozen dough. In this method dough is stretched while being subjected to vibrations so that the dough can be stretched without imparting pressure exceeding the yield point of its elasticity. Thus during the stretching step the gluten network of the dough is unharmed. Further, the dough is rested at least five minutes within a temperature range of 0°C to 16°C, before it is stretched. Such a dough rested at such a cool condition can be readily stretched, and the stability of the stretched dough is improved over the prior art.
Patent CA-1323159-C (CA)
Title: Apparatus for forming plastics coated tube
Inventor: BARNOACH ITZHAK
IPC: B29C48/151
Filed: 1989-07-31
Granted: 1993-10-19
Abstract: ABSTRACT Apparatus for forming a plastics coated metal tube comprising means for forming a continuous strip of metal into a U-shape and a forming sleeve for folding the strip into an overlapping tube. A mandrel is also provided which extends through the forming sleeve and through a locating sleeve. The locating sleeve centralises the tube as it passes over the mandrel and welding means are provided for welding the overlapping tube as it passes through the locating sleeve. According to the invention, the welding means comprises an ultrasonic welding wheel and drive means for the welding wheel, the drive means being capable of driving the welding wheel at a peripheral speed identical to the speed at which the overlapping tube is drawn past the wheel.
Patent CA-1313685-C (CA)
Title: Basketball return apparatus
Inventor: WARES JONATHAN G
IPC: A63B63/08
Filed: 1989-08-04
Granted: 1993-02-16
Abstract: ABSTRACT OF THE DISCLOSURE           A lightweight portable apparatus for retrieving a basketball (101) is described.  The apparatus includes a frame or support assembly (10) and a trough track assembly (42) removably mounted on the support assembly.  The trough track assembly includes spaced apart tubes (50L and 50R) on which the basketball rides, panels (44L and 44R) mounted on the tubes, and track extender modules (56L, 56R, or 54) which extend the ball's delivery to left, right, or center court.
Patent CA-1338776-C (CA)
Title: Use of transglutaminases as immunosuppressants
Inventor: STIEF THOMAS
IPC: A61K38/57
Filed: 1989-08-30
Granted: 1996-12-10
Abstract: A description  is  given of  the possibility of using transglutaminases in a process for the preparation of an immunosuppressant.            Additionally described is a pharmaceutical containing a transglutaminase and a plasminogen activator inhibitor.
Patent CA-1323864-C (CA)
Inventor: SUGIMOTO MUTSUMI
IPC: A44B11/25
Filed: 1989-09-22
Granted: 1993-11-02
Abstract: ABSTRACT OF THE DISCLOSURE      A  buckle  assembly  for  a  seat  belt  generally comprises  a  base  having  a  horizontal  plate  and  side plates,  a  latch  means  to  be  engaged  with  the  side plates  and  supported  thereby  so  as  to  be  swingable between a latch locking position and a latch releasing position,  a push button pivotally mounted to the side plates,  a  spring means  to  be  engaged with  the  latch means so as to always urge the latch means towards the locking  position  thereof,  and  a  tongue  means to  be inserted  into  a tongue  insertion  space  formed between the horizontal  plate and the side plates of the base and engaged with the latch means.   The spring means is of  a  double  tortional  spring  structure  comprising double  tortional   portions,   a  central   lock  spring portion  formed  between  the  double  tortional  portions and  adapted  to  urge  the  latch  means  to  the  locking position   thereof,   and   cantilever   portions   formed outside the double tortional portions and adapted to be supported by the push button so as  to urge the push button towards an original position thereof.   The latch means  is  provided  with  an  improved  guide  means  for smoothly and safely inserting the tongue means into the tongue insertion space of the base.
Patent CA-1338763-C (CA)
Inventor: WALTERS ROLAND LAWRENCE
IPC: C07D405/10
Filed: 1990-07-10
Granted: 1996-12-03
Abstract: Reagents, compounds of the general formula:     Where: X=Y=H or taken together to form a bond R=-(CH2)n-NR'            and n=0 or 1 R'=H or CH3 useful for producing the reagents and fluorescence polar-ization immunoassay utilizing the reagents, for determining tricyclic antidepressants in biological fluids, are dis-closed.
Patent DK-164479-C (DK)
Inventor: HANSTEIN ULLRICH
IPC: A61K31/70
Filed: 1986-04-21
Granted: 1992-11-16
Abstract: The invention relates to formulations in the form of suspensions containing sucralfate, characterized in that they contain, based on the sucralfate, 1-5% by weight of xanthan gum and 1-12.5% by weight of at least one peptiser.
Patent DK-156472-C (DK)
Inventor: MOUILLE BERNARD LUCIEN ANDRE
IPC: C01B21/20
Filed: 1980-06-12
Granted: 1990-01-29
Abstract: This invention relates to a continuous process for the recovery of nitrogen oxides from a gaseous mixture containing, with other chemicals, said nitrogen oxides and in general some oxygen. This process is characterized by the fact that this gaseous mixture flows simultaneously with an aqueous liquid which may be pure water or an aqueous nitric acid solution over a carbonaceous adsorbing layer which may be made of activated carbon.
Patent DK-162426-C (DK)
Inventor: KOEHNKE OLE BJOERN
IPC: A61M16/00
Filed: 1989-09-04
Granted: 1992-03-23
Abstract: A protective device kit for use in pulmonary ventilation treatment comprising a film mask (1) for positioning over a patient's mouth and nose regions and a one-way valve (3) mounted centrally in the film mask (1) and comprising a valve housing having a valve seat (10) provided with inlet openings and having an internally situated valve flap (14) which, in the closed position of the valve (3), covers the inlet openings (11) of the valve seat (10), one or more outlet openings (16) provided in the side wall of the valve housing, and further comprising a flat box for encasing closely and protecting the film mask in its folded state.
Patent FI-71606-C (FI)
Inventor: BERGHEIM HANS
IPC: B21D41/02
Filed: 1980-07-03
Granted: 1987-01-19
Abstract: A method and apparatus for producing a pipe connection are disclosed. The apparatus includes an inner pipe formed on the pipe to be joined which has a widened end part. An outer pipe in the pipe connector is dimensioned to receive the inner pipe and has an undercut formed therein to receive the widened end part. A sleeve is mounted inside the inner pipe with a close tolerance so as to be substantially free from play. The sleeve has a widened wedge-shaped portion which engages the inner pipe internally. As a result, the inner pipe is retained between the undercuts and the wedge-shaped portion of the sleeve.
Patent FI-87194-C (FI)
Inventor: BARCELO GERARD
IPC: C07C271/02
Filed: 1985-02-13
Granted: 1992-12-10
Abstract: The invention relates to new  alpha -chlorinated carbonates characterized in that their formula is:   <IMAGE>   in which X is a fluorine, chlorine or bromine atom and R1 is different from the <IMAGE>  group and represents; a substituted or non-substituted, saturated or unsaturated, aliphatic, araliphatic, primary, secondary, tertiary or cycloaliphatic radical. These  alpha -chlorinated carbonates are prepared by the action of a compound of formula R1OH on a chloroformate of formula:   <IMAGE>  in a solvent medium in the presence of an acid scavenger which is added after the two preceding compounds. They are used to block the amine function of amino acids. The  alpha -chlorinated carbonate and amino acid are reacted in a solvent medium at a temperature of -5 DEG  to 100 DEG  C. in the presence of an acid scavenger. Blocked amines are very useful in peptide synthesis.
Patent FI-86657-C (FI)
Inventor: GAUTHIER MAURICE
IPC: D21F7/08
Filed: 1985-03-29
Granted: 1992-09-25
Abstract: Process for heat-sealing a layer of pervious material (26) to a support (20) formed of interwoven threads characterized in that during the fabrication of the support (20) there are provided on one side (21) special threads having a core and a thermoplastic outer part of which the melting temperature is lower than that of the core and than those of other threads, and in that the side (21) is heated until the outer part of the special threads is melted, whereafter the layer (26) is applied to said side. The mechanical and tightness qualities of the support and of the layer have thereby been preserved. Utilization of the process for the making of paper felts and filter fabrics.
Patent FI-82480-C (FI)
Inventor: SMID JACOB KORNELIS
IPC: C11D1/52
Filed: 1986-09-19
Granted: 1991-03-11
Abstract: The invention relates to a process for the preparation of a detergent containing one or more compounds having the formula RCONH(C₂H₄O)<sub>n</sub>CH₂COOH and/or salts thereof, where R represents a linear or branched aliphatic hydrocarbon group with 5-21 carbon atoms and n is a number from 1-20, by amidating, ethoxylating and carboxy­methylating one or more fatty acids having the formula RCOOH and, if so desired, converting all or part of the ether carboxylic acid obtained to a salt thereof, characterised in that an oil or fat is started from and that this oil or fat is aminolysed in the presence of an alkali(ne earth) metal and the reaction mixture obtained is in the usual manner ethoxylayed, carboxymethylated and, if desired, converted in whole or in part to a salt.
Patent FI-88696-C (FI)
Inventor: LISIECKI ROBERT E
IPC: B65D5/06
Filed: 1988-12-16
Granted: 1993-06-28
Abstract: A flat top, thermoplastic coated, paperboard container having weakened lines (48a,b,c) formed thereon such that the top (44) may be opened by breaking through a weakened line at the front (22) and progressively breaking the weakened lines along the sides upon peeling back the cover panel, to provide access to the contents. Provisions (76) are included for covering the weakened lines on the inside of the container to prevent leakage.