baber/WOPTO huggingface dataset:
Patent CA-2018036-A1 (CA)
Title: P-substituted propane-phosphinic acid compounds
Inventor: MICKEL STUART J
IPC: C07F9/30
Filed: 1990-06-01
Abstract: 4-17594/+            P-substituted Propane-Phosphinic Acid Compounds Abstract Compounds of the formula I               (I), wherein either R1 is halogen, R1' is halogen or hydrogen and R2 and R2' denote hydrogen or R1 and R1' represent hydrogen, R2 is an aliphatic or aromatic radical and R2' is hydroxy or R2 and R2' together represent oxo, and wherein R denotes an aliphatic, cycloaliphatic, cycloaliphatic-aliphatic or araliphatic radical having 2 or more carbon atoms or, if R1 and R1' denote hydrogen, R2 represents an aromatic radical and R2' is hydroxy, R represents methyl, and their salts are useful as nootropics, antidepressants and/or anxiolytics. The can be manufacture by replacing any group R5 by hydrogen and/or converting any group Zo into amino in a compound of formula II                    (II) in which R, R1, R1', R2 and R2' have their previous significances, Z represents a protected or latent amino group Z0 and R4 denotes hydrogen or a hydroxy-protective group R5, and wherein amino as a constituent of R and/or hydroxy R2' or oxo R2 + R2' may be present in a temporarily protected form.
Patent CA-2020620-A1 (CA)
Inventor: CHERUKURI SUBRAMAN R
IPC: A23G4/10
Filed: 1990-07-06
Abstract: The  present  invention  pertains  to  reduced-calorie chewing gum compositions comprising a gum base having  an  enhanced  hydrophilic  nature.     In  one embodiment, the invention pertains to a reduced-calorie saliva   stimulating   chewing   gum   composition   which comprises (A)  a gum base having an enhanced hydrophilic nature present in an amount from about 40% to about 75%, by weight of the chewing gum composition,  (B) a bulking agent present in an amount up to about 60%, by weight of the chewing gum composition, (C) an effective amount of a sweetening agent,  and  (D)  a homogeneous mixture  of  a hydrophilic polymer present  in an amount  of  at  least about  1.5%  in  an  anhydrous  carrier.     In  another embodiment,  the  invention pertains  to  a  center-filled chewing gum composition having an outer shell enclosing a cavity and a liquid center within the cavity, wherein the outer shell  comprises  a  gum base  having  an  enhanced hydrophillc  nature.    In  yet  another  embodiment,  the invention pertains to a confectionery coated chewing gum composition having a center portion and a confectionery coating  over  the  center  portion  wherein  the  center portion comprises a reduced-calorie gum base having an enhanced hydrophilic nature.   In other embodiments,  the invention   pertains   to   a   reduced-calorie   saliva-stimulating  center-filled  chewing  gum  and  a  reduced-calorie saliva-stimulating confectionery coated chewing gum.
Patent CA-2020970-A1 (CA)
Inventor: UEKITA MASAKAZU
IPC: G02F1/1337
Filed: 1990-07-11
Abstract: ABSTRACT OF THE DISCLOSURE An element of liquid crystal display including an orientation film.  The orientation film is obtained by building up at least one monomolecular film on a substrate having thereon at least an electrode layer.  The monomolecular film is formed by spreading an amphiphilic high-molecular weight substance having a number average molecular weight of from 2,000 to 300,000 having a repeating unit represented by formula (I):                                         (I) wherein R1 represents an aliphatic group having from 12 to 30 carbon atoms; and R2 represents at least one group selected from the group consisting of     ,       ,    ,      , and              , on a water surface, and subjecting the built-up film to a heat treatment to cause cyclization.
Patent CA-2021078-A1 (CA)
Title: Electronic watthour meter
Inventor: GERMER WARREN R
IPC: G01R21/133
Filed: 1990-07-12
Abstract: ABSTRACT OF THE DISCLOSURE       An electronic watthour meter is digitally configurable to operate as several different types of watthour meters for metering electrical energy from a variety of different electric utility services. Automatic scaling of line input currents is provided to scale the voltage input to an analog to digital converter over selected ranges such that low level and high level input signals are measured in an optimum range. A digital signal processor is employed to calculate values for metered electrical energy and output pulses, each proportional to a quantum of energy flowing in the circuit being metered. The processor calculates the value of DC offset errors inherent in the various analog circuits of the meter and uses that value in the calculation of metered electrical energy to compensate for such offset errors.  The meter employs automatic and manually initiated test functions for testing the operation of the processor and other critical circuits in the meter.
Patent CA-2021244-A1 (CA)
Inventor: NAGAMI MASAAKI
IPC: G10K11/178
Filed: 1990-07-16
Abstract: A noise reducing device including a noise silencing device having a delay unit for delaying a phase of the noise wave, an amplifying unit for adjusting a gain of the delayed noise wave, a superposing unit for superposing the delayed noise wave as the noise silencing wave, a frequency selecting unit for selecting at least one frequency with respect to the noise wave, a factor selecting unit for selecting at least one of a delaying factor used for the delaying unit and a gain factor used for the amplifying unit with respect to the selected frequency, and a controlling unit for controlling at least one of the delaying unit and amplifying unit utilizing the selected delaying factor and a gain factor, respectively, whereby a noise silencing wave having the same frequency and amplitude as that of a noise to reduced but having a reverse phase can be easily obtained, and thus efficient noise reduction can be obtained despite variation of the frequency of the noise.
Patent CA-2023613-A1 (CA)
Inventor: FALOU MOHAMAD S
IPC: D06M11/77
Filed: 1990-08-20
Abstract: A laundry treatment product, in the form of a sachet containing a particulate bleaching detergent composition containing sodium percarbonate, has at least two compartments to enable the sodium percarbonate to be segregated from certain other ingredients, particularly zeolites.   The sachet product exhibits improved bleach stability on storage.  Sachets of water-soluble polyvinyl alcohol film are not insolubilised in the wash liquor since no sodium perborate is present to generate insolubilising borate ions.
Patent CA-2025515-A1 (CA)
Inventor: BRAUN DAVID L
IPC: A62B18/08
Filed: 1990-09-17
Abstract: Abstract of the Disclosure A respirator harness of polymeric components and elastic straps can be made in a 2-part injection mold in a single step.  The elastic straps can have superior resistance to pull-out when secured to each polymeric component by a cage that is integral with the polymeric component, and the cage has at least one transverse rib that is fused to the elastic strap and around which the strap is stretched.
Patent CA-2030241-A1 (CA)
Title: Extruded structure
Inventor: BIRCH ROBIN D
IPC: B29C48/08
Filed: 1990-11-19
Abstract: ABSTRACT                 "EXTRUDED STRUCTURE"        A method of producing a porous structure in which a blend of a first thermoplastic polymer and a second, immiscible, thermoplastic polymer is extruded through a die into a structure having the desired cross section in which the polymers are present in the structure as interpenetrating networks and leaching out with a solvent for the immiscible polymer that network formed by the immiscible polymer so producing a porous structure comprising the first polymer network characterised in that a perforate barrier plate is interposed in the flow path of the blend prior to its passage out of the die.
Patent CA-2034537-A1 (CA)
Inventor: BRUEMMER MARY A
IPC: A61F13/15
Filed: 1991-01-18
Abstract: A diaper or absorbent article comprising a topsheet, a backsheet, an absorbent between the topsheet and backsheet, and an elevating device for spacing the topsheet above the absorbent to form a pocket-like shape. The topsheet can have an opening and the absorbent can have a hole therein, both of which receive and isolate waste material from the wearer.
Patent CA-2035326-A1 (CA)
Title: Oil containment and shipping device
Inventor: MASSE BERNARD
IPC: B65D88/04
Filed: 1991-01-31
Abstract: ABSTRACT         OIL CONTAINMENT & SHIPPING DEVICE        This invention is a device for transporting liquid material e.g. oil inside existing oil tankers.  Inventor contends when device is used under proper conditions it will provide leakproof and unsinkable containment of liquid product.  This device is designed to be easily recoverable and spillproof under the most adverse conditions.  This device is constructed of 1/2 inch thick neoprene rubber (for flexibility) innershell, combined with 1/4 thick stainless steel mesh outershell with a carrying capacity of 25,000 Imperial gallons.  Specifications may vary according to carrying capacity of containment device.
Patent CA-2035851-A1 (CA)
Title: Readily exchangeable perfusion catheter
Inventor: MCINNES PETER R
IPC: A61M25/00
Filed: 1991-02-06
Abstract: A perfusion-type dilatation catheter which can be rapidly exchanged for another catheter without the need for exchange wires or guidewire extension wires. The dilatation catheter has an elongated catheter body with a distal guidewire port in the distal end of the catheter and a proximal guidewire port at least 10 cm but not more than 50 cm from the distal port. The catheter body has a first inflation lumen which extends from the proximal end of the catheter body to the interior of a dilatation balloon adjacent the distal end of the catheter body. A second, much shorter inner lumen is disposed between the proximal and distal guidewire ports and is adapted to slidably receive a guidewire. A plurality of perfusion ports are provided both proximal and distal to the balloon which are in fluid communication with the second inner lumen so that when the balloon is inflated within a patient's vascular system, blood will flow through the proximal perfusion ports and the second inner lumen and out the distal perfusion ports to minimize ischemic conditions distal to the catheter. A stiffening member is disposed within the catheter body proximal to the proximal guidewire port to provide improved pushability.
Patent CA-2035940-A1 (CA)
IPC: B25B5/16
Filed: 1991-02-07
Abstract: A nesting vise for holding bundles of stock comprising a base with a fixed jaw and a movable jaw mounted thereon, both jaws having faces with apertures therein.  A strap is provided which extends between the two jaws through the apertures.  A lock is provided to hold the strap on one end,  and a strap tightener is attached to the other end of the strap which tightens and holds the bundle of stock, resulting in even radial pull towards the center of the vise so as to locate all of the pieces of stock in the bundle and locking them together.
Patent CA-2036254-A1 (CA)
Title: Method for storage tank leak detection having ground water compensation
Inventor: LAGERGREN PETER J
IPC: G01M3/32
Filed: 1991-02-13
Abstract: METHOD FOR STORAGE TANK LEAK DETECTION    HAVING GROUND WATER COMPENSATION            ABSTRACT OF THE DISCLOSURE     A method is described for enabling leak detection of an underground storage tank  surrounded by a water table.   The method begins by sealing a test probe in the tank, the test probe having an elongated substantially hollow core with first and second ends, a housing for receiving the second end of the hollow tube  and being vented to the  fluid product,  a  low temperature coefficient medium supported in the substantially hollow core of the elongated tube, and a liquid seal supported in the housing between the medium and the fluid product.  The method  continues  by  then  establishing  and  maintaining  a pressure equilibrium between the hollow core of the test probe and the head space.   An inert gas such as nitrogen is then introduced  into  the  head  space to overpressurize the head space by an amount sufficient to reestablish a leak at any break in the storage tank despite presence of the water table surrounding the  storage tank.   Once  the  tank  contents  are stabilized, the precision leak test is performed.
Patent CA-2041163-A1 (CA)
Inventor: BRION JEAN DANIEL
IPC: C07D311/28
Filed: 1991-04-24
Abstract: NOUVEAUX DERIVES HETEROCYCLIQUES : 2-STYRYL 4H-1-BENZOPYRANE-4-ONES, LEUR PROCEDE DE PREPARATION ET LES COMPOSITIONS PHARMACEUTIQUES QUI LES CONTIENNENT ADIR ET COMPAGNIE 1, RUE CARLE HEBERT 92415 COURBEVOIE CEDEX Composés de formule générale (I) : (I) dans laquelle : R1 représente un atome d'hydrogène, un groupement alcoyle inférieur, hydroxyle ou alcoyloxyle inférieur, R2, R3, R4, R5, R6, R7, R8 et R11 définis dans la description. Médicaments.
Patent CA-2042514-A1 (CA)
Title: 2-(4-alkenylphenyl)-5-oxazolones and polymers thereof
Inventor: FAZIO ROBERT C
IPC: C07D263/52
Filed: 1991-05-14
Abstract: 2-(4-ALKENYLPHENYL)-5-OXAZOLONES       AND POLYMERS THEREOF                 Robert C. Fazio Lloyd D. Taylor ABSTRACT      Disclosed are certain 2-(4-alkenylphenyl)-5-oxazolones useful in the production of polymers containing pendant functional groups obtained by nucleophilic ring-opening addition reactions,  the 2-(4-alkenylphenyl)-5-oxazolones having the formula                (I) wherein R1 is hydrogen or alkyl,  each of R2 and R3 is hydrogen, alkyl, aryl, alkaryl, aralkyl, cycloalkyl, or R2 and R3 together with the carbon atom to which they are bonded constitute a carbocyclic or heterocyclic ring.
Patent CA-2043128-A1 (CA)
Title: Catalyst precursor production
Inventor: JOB ROBERT CHARLES
IPC: C08F10/00
Filed: 1991-05-23
Abstract: ABSTRACT CATALYST PRECURSOR PRODUCTION                   Normally sparingly soluble magnesium alkoxide is solubilized in alkanol by the additional presence of certain acidic materials. The resulting solution is used to prepare a mixture of substantially spherical particles substantially free of fines, containing an adduct magnesium alkoxide. The particles are converted by conventional methods to a  precursor of an olefin polymerization catalyst of high activity and high selectivity to stereoregular polymer whenever appropriate.
Patent CA-2044349-A1 (CA)
Title: Water drawing and guiding device for jet-propelled gliding boats
Inventor: NAKAMURA YUKIO
IPC: B63B13/02
Filed: 1991-06-11
Abstract: ABSTRACT OF THE DISCLOSURE   The present invention relates to a water drawing and guiding device for jet-propelled gliding boats, wherein a scope gate for preventing entry of floating obstacles is attached to a water intake port formed in the bottom surface of the boat body, and the water drawn from the water intake port is accelerated by an impeller housed in a water intake duct and spouted rearwardly of the boat body, the water drawing and guiding device being characterized in that: the scope gate is made of elastic transparent or translucent engineering plastic material into the form of a longitudinally elongated rectangle having a pair of attacking seats and a pair of flow regulating vertical walls, the arrangement being such that during the turning of the boat body, the flow regulating vertical walls flex to and fro like plate springs, the main object thereof being to provide an extremely smooth fellable water drawing action without excessively holding back natural water flow moving from the water intake port to the water intake duct or without agitating water to the extent of bubbling or decreasing the flow rate of water, thereby preventing cavitation from taking place in the water intake duct.
Patent CA-2044405-A1 (CA)
Title: N-oxyimidic acid derivatives
Inventor: KAPA PRASAD K
IPC: C07C259/06
Filed: 1991-06-12
Abstract: A B S T R A C T:       N-OXYIHIDIC ACID DERIVATIVES        The compounds of formula I                                I   wherein the substituents have various significances, possess anti-diabetic and hypolipidemic activity and are thus indicated for use as pharmaceuticals. They can be prepared starting from a corresponding amide or, for a subgroup, starting from a corresponding acyl derivative.
Patent CA-2046862-A1 (CA)
Title: Device for exposing photopolymer printing plates
Inventor: HOFFMANN HORST
IPC: G03F7/20
Filed: 1990-02-21
Abstract: O.Z. 0050/40603 Abstract of the Disclosure:  An apparatus for exposing photopolymeric printing plates consists of a stand (1) having integral UV fluorescent tubes (7b), an obliquely arranged glass support sheet (4) [sic] for supporting the printing plates, the support sheet being equipped with an orthogonal pattern (25, 26) of grooves, connected to vacuum pumps, a matt black cloth (9) arranged between the UV fluores-cent tubes and the support sheet, a lid (2) which is pivotable about a pivotal point (6), is connected to the stand and has integral UV fluorescent tubes (7a), the lid being capable of being swivelled up-ward on the one hand and laid flat on the stand on the other hand, and a means (4) which moves to and fro via toothed racks (5) and is intended for fold-free and bubble-free positioning and simultaneous cleaning of a vacuum film (3),  the vacuum  film  giving  a vacuum-tight  seal  against  the support sheet when the printing plate is placed on top.      Fig. 1
Patent CA-2048577-A1 (CA)
Inventor: ROURKE JOHN L
IPC: B41J21/00
Filed: 1991-08-07
Abstract: An electronic printing system for printing multiple up images in which image signals representative of the multiple up image may be input from a remote source or a small document bearing the multiple up image scanned to provide image signals, the size of the multiple up image determined, the size of the paper stock on which the multiple up images are to be printed determined, and the maximum number of multiple up images that can be printed without interference on the paper stock calculated for printing.
Patent CA-2049288-A1 (CA)
Title: Transdermal absorption dosage unit for postmenopausal syndrome treatment and process for administration
Inventor: CHIEN YIE W
IPC: A61K31/565
Filed: 1990-03-08
Abstract: Transdermal absorption dosage units have been developed for treatment of postmenopausal syndrome which comprise a backing layer, an adjoining adhesive polymer layer in which at least minimum effective daily doses of an estrogen is microdispersed. Presently preferred is use of the natural estrogen, 17-beta-estradiol, or ethinyl estradiol or combinations thereof together with an amount of a natural progestogen or a progestin to minimize any potential side effects. The units use bioacceptable adhesive and polymers. An additional polymer layer in intimate contact with the estrogen-containing layer can be used. Also, a separating layer can optionally be used in making the dosage units, which separate the two adhesive polymer layers, which permits estrogen transmission from the first adhesive polymer layer during treatment. Dosage units are provided which transdermally deliver at least minimum daily doses of the estrogen for at least one day or for multiple days, such as for one week. The invention also provides a process for postmenopausal syndrome treatment using the novel dosage units.
Patent CA-2049868-A1 (CA)
Title: Air gun for producing nonwoven fabrics
Inventor: KANEKO AKIRA
IPC: D04H3/033
Filed: 1991-08-26
Abstract: ABSTRACT     The present invention relates to an air gun for producing nonwoven fabrics, and an object of the invention is to easily introduce a filament at the start of operation.     An air gun for producing nonwoven fabrics according to the present invention comprises an inlet for receiving a filament spun from a spinning nozzle,  a carrier path for putting said filament introduced from said inlet on an air flow to deliver the same, and a compressed air blow port opened in the midst of said carrier path to jet air being fed from a compressed air source into the carrier path, wherein an exhaust path is provided in the carrier path on the downstream side from the compressed air blow port, and when the filament spun from the spinning nozzle is introduced into an inlet of the air gun, a part of air flowing into the carrier path from the exhaust path is discharged.
Patent CA-2051240-A1 (CA)
Title: Histidinol dehydrogenase protein, dna and muteins and transgenic plants thereof
Inventor: SCHEIDEGGER ALFRED
IPC: C12N9/04
Filed: 1991-09-12
Abstract: ABSTRACT     HISTIDINOL DEHYDROGENASE PROTEIN, DNA AND MUTEINS AND TRANSGENIC  PLANTS THEREOF     The present invention comprises cDNA coding for histidinol dehydrogenase from plants, the final step in histidine biosynthesis. The invention also comprises a novel method of purifying histidinol dehydrogenase from plants to essential honogeneity, the purified histidinol dehydrogenase, an assay for identifying inhibitors of histidinol dehydrogenase, an assay lo identify mutants of histidinol dehydrogenase that are not inhibited by inhibitors of wild-type histidinol dehydrogenase, the inhibitors so identified as well as herbicide compositions containing them, the non-inhibited mutants of histidinol dehydrogenase, transgenic crop plants containing the non-inhibited mutants of histidinol dehydrogenase, and methods of treating weeds utilizing the application of histidinol dehydrogenase inhibitors to the transgenic crops containing the non-inhibited mutants of histidinol dehydrogenase.
Patent CA-2052423-A1 (CA)
Title: Hearing aid wax guard with integral bridge
Inventor: GARBE MANFRED K
IPC: H04R1/10
Filed: 1991-09-26
Abstract: RBP File No. 680-060 ABSTRACT OF THE DISCLOSURE         A  wax guard system, for use with an in-the-ear hearing aid, has a housing secured to the hearing aid shell and an insert which screws into the housing. The insert has a body having an internal passage therethrough, and a bridge extending across the exterior opening of the passage.  The bridge is higher at its centre than at its ends and carries a thin domed disk which shields the opening and deters wax from entering the passage.
Patent CA-2053068-A1 (CA)
Inventor: GROOTEGOED ROBERT
IPC: E02B3/06
Filed: 1991-10-09
Abstract: ABSTRACT         A boom for the installing of a small boat dock while the installer need not enter the water is presented along with the method for use.  Diagonal supports necessary to the final installation in the best mode of the method invention are included.
Patent CA-2053117-A1 (CA)
Title: Technique for reducing whirling of a drill string
Inventor: TWIST JAMES R
IPC: E21B47/00
Filed: 1991-10-09
Abstract: ABSTRACT OF THE DISCLOSURE Improved techniques are provided for correcting signals from a downhole sensor on a drill collar eccentrically rotating within a borehole. The corrected sensor signal may be used to generate a well log which more accurately represents the conditions which the sensor would have generated had the tool been rotating such that the spacing between the sensor and the borehole well remained constant. The sensor signals are generated at time intervals of less than half the period of rotation of the drill collar. The frequency components of the time-varying sensor signals are plotted, and the frequency component attributable to the eccentric rotation between the drill collar and  the borehole may be determined. The magnitude of this frequency component may be used to generate a correcting sensor signal, which then modifies the average sensor signal so that a more accurate well log may be obtained. The techniques of the present invention may be used to determine actual rotational speed of the drill collar and the spacing between the sensor and the wall, and are particularly well suited to determining a whirling condition in real time and alter drilling parameters in response thereto.