baber/WOPTO huggingface dataset:
Patent CA-2005045-A1 (CA)
Title: Apparatus and method for decorating cans
Inventor: SHRIVER FRANK L
IPC: B41F31/14
Filed: 1989-12-11
Abstract: ABSTRACT OF THE DISCLOSURE    A ductor roll assembly for use in transferring wet ink from a rotating fountain roll to a rotating distributor roll within a wet ink transfer system for a can decorating apparatus having a main drive system wherein the ductor roll assembly comprises at least one ductor roll but preferably comprises a plurality of ductor roll but each of which is movably mounted on a fixed support frame for movement into a contacting relationship with either the fountain roll or the distributor roll to transfer the wet ink.  Individual variable control units are provided for each of the ductor rolls to move a desired number of them into the contacting relationship with the rotating fountain roll or the distrib-utor roll for any desired period of time so as to control the quantity and location of wet ink transferred from the fountain roll to the distributor roll by the desired number of the ductor rolls and wherein the control of the movement of each ductor roll is independent and separate from the main drive system.
Patent CA-2010028-A1 (CA)
Title: In-tank fuel reservoir with fuel level sensor
Inventor: ASSELIN BRIAN K
IPC: B60K15/077
Filed: 1990-02-14
Abstract: Abstract of the Disclosure A fuel delivery system for automotive engine and like applications comprises a canister for positioning within a fuel tank so as to be surrounded by fuel in the tank.  An electric-motor fuel pump has an inlet and an outlet for feeding fuel under pressure from the tank to the engine.  Excess fuel is returned from the engine to the canister.  A fuel level sensor includes a pressure sensor positioned at a lower portion of the canister and responsive to head pressure within the canister and within the surrounding tank for providing an electrical signal as a function of a difference between such pressures.          An  indicator  is  responsive  to such electrical  signal  for displaying tank fuel level to an operator.
Patent CA-2011592-A1 (CA)
Title: Multiple phase psk demodulator
Inventor: NEASE GREG A
IPC: H04L27/233
Filed: 1990-03-06
Abstract: ABSTRACT         A multiple phase PSK demodulator for use in a spread spectrum communication system includes a plurality of baseband frequency converters coupled to a corresponding plurality of differential decoders in order to directly recover the encoded PSK data.  The logic outputs of the plurality of differential data decoders are coupled to a majority vote logic circuit for determining the correct logic level output signal of the plurality of differential data decoders.  In another embodiment, a three phase resistive network is used to convert the two phase quadrature output of two baseband frequency converters to plural phase outputs coupled to the inputs of a corresponding plurality of differential data decoders.
Patent CA-2011712-A1 (CA)
Inventor: VOLKER THEODOR
IPC: C08G18/76
Filed: 1990-03-07
Abstract: The novel chain extenders based on chlorinated 4,4'-methylenebisanilines are used for p-phenylenemethylene diisocyanate prepolymers for cast polyurethane elastomers.
Patent CA-2012569-A1 (CA)
Title: Benzothiopyranylamines
Inventor: HUTCHISON ALAN J
IPC: A61P25/18
Filed: 1990-03-20
Abstract: 4-17528/=/CGC 1426 NOVEL BENZOTHIOPYRANYLAMINES     ABSTRACT OF THE DISCLOSURE     Disclosed are 3,4-dihydro-2H-l-benzothiopyran-3-yl-methyl- and ethylamines useful as antipsychotics, processes for the preparation of said compounds, pharmaceutical compositions containing same, and a method of treating psychotic disorders by administering said compounds.
Patent CA-2012969-A1 (CA)
IPC: H04N5/931
Filed: 1990-03-23
Abstract: ABSTRACT OF THE DISCLOSURE    A magnetic reproducing head amplifier according to the present invention comprises a differential amplifier referred to as one of these three types: a balanced input type, a balanced output type, or a balanced input/output type.   The  amplifier  comprises  at  least  one  positive feedback circuit for passing a positive feedback current to the differential amplifier and at least one negative feedback circuits for passing a negative feedback current to the same, and is configured so that a positive feedback and a negative feedback are simultaneously performed by the positive  feedback circuit  as well  as the negative feedback circuit.  A resonance peak characteristic at the input part of the differential amplifier is dumped by the negative  feedback  current,  and  therefore  a  frequency characteristic as well as a group delay characteristic of the   output  of   the  differential   amplifier  becomes flattened.   Moreover,  the use of  the positive feedback current from the positive feedback circuit permits  the charging  current  from  the  signal  source  to  the  input capacitance of the differential amplifier to be reduced, that is to say, an effective input capacitance is reduced, and thereby a resonance frequency at the input part of the differential amplifier can be shifted to the vicinity of the upper limit of the transmission band.  Consequently, a stable  amplification  operation can be  achieved  for  FM carriers for carrying wide frequency signals, such as HDTV signals.
Patent CA-2014913-A1 (CA)
Title: Method for improving adhesion of synthetic diamond coatings to substrates
Inventor: ANTHONY THOMAS R
IPC: C23C16/27
Filed: 1990-04-19
Abstract: METHOD FOR IMPROVING ADHESION OF SYNTHETIC DIAMOND COATINGS TO SUBSTRATE                      Abstract Adhesion of diamond coatings formed by chemical vapor deposition to substrates, particularly molybdenum substrates, is improved by first applying to the substrate a silicon layer.  Preferably, the silicon layer is applied via an auxiliary substrate comprising elemental or chemically combined silicon, from which a silane diffuses to the principal substrate, where it is reduced to silicon and deposits thereon.
Patent CA-2017369-A1 (CA)
Inventor: SELIGER HEINZ-HARTMUT
IPC: C07H19/10
Filed: 1990-05-23
Abstract: A modified phosphoramidite process for the synthesis of nucleotide sequences. By use of a modified nucleoside phosphoramidite it is possible to produce nucleotide sequences which have a modified phosphate residue.
Patent CA-2022034-A1 (CA)
Title: Mouth-held holder
Inventor: WILLIS JAMES J
IPC: A61F4/00
Filed: 1990-07-26
Abstract: Abstract of the Disclosure A mouth-held implement holder is disclosed having a socket at one end which receives the butt end of the implement.          The opposite end of the holder is formed as a mouthpiece.  The mouthpiece, on being inserted into the mouth, is gripped by the molars which extend along the sides of the upper and lower jaws.          Provision is made for breathing through the mouthpiece.
Patent CA-2023622-A1 (CA)
Inventor: ONO HITOSHI
IPC: G03G5/06
Filed: 1990-08-20
Abstract: Abstract An electrophotographic photoreceptor comprising a photosensitive layer which contains one or more hydrazone compounds represented by the formula:       [I]     wherein A represents a substituted or unsubstituted aryl or heterocyclic group; R1, R2 and R5 are the same or different from each other and independently represent a hydrogen atom, or a substituted or unsubstituted alkyl or aryl group; R3 and R4 are the same or different from each other and independently represent a hydrogen atom, a halogen atom, a nitro group, or a substituted or unsubstituted alkyl, alkoxy, aryl or aryloxy group; R6 represents a hydrogen atom, a halogen atom, or a substituted or unsubstituted alkyl or alkoxy group; R7 represents a substituted or unsubstituted alkyl, aryl, aralkyl or heterocyclic group, or an allyl group, or binds to the phenyl group attached to the nitrogen  atom as indicated by the dotted line in the formula I to form either one of the following rings together with the phenyl group and the nitrogen atom:                      [II]       [III]       [IV]        [V]   and n is an integer of 1 or 2, provided that A and R1 may form a ring together with the carbon atom to which they are attached.     This photoreceptor has high sensitivity and excellent endurance.
Patent CA-2023813-A1 (CA)
Title: Acetylenes disubstituted with a phenyl group and a 2-substituted chromanyl, thiochromanyl or 1,2,3,4 - tetrahydroquinolinyl group having retinoid-like activity
Inventor: CHANDRARATNA ROSHANTHA A S
IPC: A61P35/00
Filed: 1990-08-22
Abstract: SUBSTITUTED CHROMANYL, THIOCHROMANYL OR 1,2,3,4 - TETRAHYDROQUI-NOLINYL GROUP HAVING RETINOID-LIKE ACTIVITY                 Abstract of the Disclosure Retinold-like activity is exhibited by compounds of the formula   where X is S, O or NR'; where R' is hydrogen or lower alkyl: R1, R2 and R3 are hydrogen or lower alkyl; R4 and R5 are hydrogen or lower alkyl with the proviso that R4 and R5 cannot both be hydrogen, R6 is hydrogen, lower alkyl, lower alkenyl, lower cycloalkyl or halogen; n is 0 - 5, and B is H, -COOH or a pharmaceutically acceptable salt, ester or amide thereof, -CH2OH or an ether or ester derivative, or -CHO or an acetal derivative, or -COR1 or a ketal derivative where R1 is -(CH2)mCH3 where m is 0-4, or a pharmaceutically acceptable salt thereof.
Patent CA-2025474-A1 (CA)
Title: Hydrophilic laminated porous membranes and methods of preparing same
Inventor: STIMPSON DONALD I
IPC: G01N33/545
Filed: 1990-09-17
Abstract: ABSTRACT OF THE DISCLOSURE     Laminated porous membranes useful in chromatographic assay devices include nitrocellulose or polyvinylidene difluoride (PVDF) membranes laminated to supports.  Despite lamination, the membranes remain wettable and the activity of biologically reactive reagents is not impaired, even when organic solvent based adhesives are used, due to the incorporation of an agent of the formula:                         in a concentration range of from about 0.1% to about 0.2% (w/w) for nitrocellulose, and from about 2% to about 10% (w/w) for PVDF membranes.  R1 and R2 are nonpolar, preferably alkyl moieties.
Patent CA-2025928-A1 (CA)
IPC: B27G1/00
Filed: 1990-09-21
Abstract: Abstract of the Disclosure An improved wood patch, in combination with a slot formed in a blemished wooden surface, and apparatus and method of manufacture thereof. The improved wood patch has, where the wooden surface to be repaired is horizontal, three faces:  a flat horizontal exterior face, a flat vertical interior face, and an angled arcuate interior face. The patch has both a larger vertical radius of curvature and a larger angle between the flat vertical interior face and the angled arcuate interior face than the slot. Apparatus for manufacture includes a router utilizing a double router bit having a straight cutting edge oriented perpendicular to the axis of rotation of the bit and an angled cutting edge oriented at an angle to the straight cutting edge.        Both relative longitudinal and transverse movement between the wood stock and the double router bit are created by the router being installed on a pneumatically actuated pivoting platform attached to a carriage which is engaged to a longitudinal track, with the router having a cam follower which engages a cam having a series of lobes formed in the shape of the curved intersection of the flat interior face and the arcuate interior face of the wood patch. A series of curved scallop-like protrusions are created on the wood stock which protrusions are subsequently removed by a separate cutting blade, mounted on the carriage behind the double router bit. Utilizing the proper cam, an elongated patch may be formed for a longitudinal series of blemishes on a wooden surface.
Patent CA-2025957-A1 (CA)
Title: Multilayer photographic elements having improved coating quality
Inventor: FURLAN FULVIO
IPC: G03C1/38
Filed: 1990-09-21
Abstract: Multilayer Photographic Elements Having Improved Coating Quality ABSTRACT OF DISCLOSURE      A multilayer photographic element comprising at least one  light-sensitive  emulsion  layer  comprising  silver halide grains dispersed in a hydrophilic colloid and at least one auxiliary hydrophilic colloid layer, said plu-rality of layers of different composition being simultane-ously  coated  onto  a  hydrophobic  support  from  aqueous hydrophilic colloid compositions, presents improved coat-ing quality if at least one auxiliary hydrophilic colloid layer comprises a) an anionic surface active agent, b) at least one of betaine,  N-oxide or  amide surface  active agent the and c) at least one of dispersed droplets of a water-immiscible  high-boiling organic  solvent,  a  vinyl addition polymer latex ox a highly deionized gelatin.     All the layers can be simultaneously coated from said different hydrophilic colloid aqueous compositions while mantaining a distinct layer relationship and avoiding any coating defects.
Patent CA-2025987-A1 (CA)
Title: Self-cleaning filter particularly for high-viscosity pasty fluids
Inventor: PECCI GIORGIO
IPC: B01D29/17
Filed: 1990-09-21
Abstract: SELF-CLEANING   FILTER   PARTICULARLY   FOR   HIGH-VISCOSITY       PASTY FLUIDS                  ABSTRACT OF THE DISCLOSURE    The self-cleaning filter particularly for high-viscosity  pasty  fluids  has  a  fixed  body  having  a substantially cylindrical elongated chamber in which a filtration drum is supported and defines a central region, at one end of which there is an inlet for the fluid to be filtered, and an outer annular region, at the other end of which there is a duct for the removal of the filtered fluid; a shaft is axially supported and rotationally actuated in the chamber and has a helical crest the profile whereof is suitable for grazing the inner surface of the drum to remove therefrom the impurities which are present and is suitable for pushing the fluid toward an impurity discharge duct arranged at the other end of the chamber,  the constant cleaning of the drum being suitable for keeping constant the pressure drop on the filter.
Patent CA-2026355-A1 (CA)
Title: Process for the preparation of 2-(2-halogenoethylthio)-phenylsulfonamides
Inventor: SZCZEPANSKI HENRY
IPC: B01J23/40
Filed: 1990-09-27
Abstract: CA- PS/5-17770/1+2/=   Process for the preparation of 2-(2-halogenoethylthio)-phenylsulfonamides Abstract A 2-(2-halogenoethylthio)-phenylsulfonamide of the formula I                                          (I), in which Z1 and Z2 independently of one another are hydrogen, fluorine or chlorine, wherein a) a 2-halogenophenylsulfonamide of the formula II                                          (II) in which X is fluorine, chlorine or bromine, is converted, in the presence of a base, together with a mercaptan of the formula III                R-SH                  (III) in which R is C1-C6alkyl or C1-C6alkyl substituted by phenyl, into a 2-sulfenylphenylsulfonamide of the formula IV                           (IV) in which R is as defined under formula III, b) this compound is oxidized to give the 2-sulfinylphenylsulfonamide of the formula V          (V) in which R is as defined under formula III, c) the resulting 2-sulfinylphenylsulfonamide of the formula V is converted, in the presence of an acid, into the disulfide of the formula VI                                             (VI) d) the disulfide of the formula VI is reduced to the 2-mercaptophenylsulfonamide of the formula VII                                 (VII) e) this compound is then converted, by means of a trialkylamine of the formula X          (R1)3N                      (X) in which R1 is C1-C4alkyl, into the 2-mercaptophenylsulfonamide trialkylamine salt of the formula VIII                                  (VIII) in which R1 is as defined under formula X, and f) this compound is then reacted with a halogenofluoroethane of the formula IX     Y-CH2CFZ1Z2              (IX) in which Y is chlorine or bromine and Z1 and Z2 independently of one another arehydrogen, fluorine or chlorine.
Patent CA-2026989-A1 (CA)
IPC: E03C1/05
Filed: 1990-02-07
Abstract: [57]                    ABSTRACT A water supply control system has a faucet actuating means for actuating a water supply faucet to supply water, a light-emitting means for intermittently emitting light as at least a first period, a light-detecting means for detecting light emitted from the light-emitting means and reflected by a portion of the body of a user of the faucet, and for producing a detecting signal indicative of whether the light id detected or not, and a control means for controlling the faucet actuating means to actuate the faucet based on the detected signal from the light-detecting means. The control means comprises an auxiliary light-emitting means for enabling the light-emitting means to effect a plurality of light emissions at a second period shorter than the first period, based on the detected signal from the light-detecting means, and a decision means for applying a control signal to the faucet actuating means to control the faucet based on the number of times in which the light is detected by the light-detecting means, among the light emissions caused by the auxiliary light-emitting means through the light-emitting means.
Patent CA-2027821-A1 (CA)
Title: Electronic seed rate system for a grain drill
IPC: A01C7/10
Filed: 1990-10-17
Abstract: ELECTRONIC SEED RATE SYSTEM FOR A GRAIN DRILL          ABSTRACT OF THE DISCLOSURE An agricultural implement such as a grain drill or similar seeding implement includes a plurality of transversely spaced seed meters having fluted feed wheels fixed to and transversely movable with a drive shaft which is controlled by an actuator to vary seeding rate in response to an indication provided by a sensor or sensors associated with one or more of the meters.  An electronic controller includes a desired seeding rate input and provides an indication of the actual seeding rate.  In one embodiment of the invention, an error signal indicative of the difference between the actual and desired seeding rates is utilized in a closed-loop system to move the shaft to automatically maintain the desired seeding rate.  In a wider implement with more that one shaft, a switching circuit is utilized to permit a single control circuit to provide individual section seeding rates and to automatically operate the actuator associated with the given drive shaft in accordance with the error signal.
Patent CA-2033363-A1 (CA)
Title: Quinazoline derivatives and their preparation
Inventor: SHIMAZAKI NORIHIKO
IPC: A61P9/10
Filed: 1990-12-28
Abstract: AsSTRACT        Compounds of the formula:       in which R1 and R2 are each hydrogen, halogen, nitro, amino, protected amino, hydroxyamino, lower alkyl, hydroxy, protected hydroxy, sulfamoyl, carboxy, protected carboxy, mercapto, heterocyclic-carbonyl, heterocyclic-(lower)alkyl, lower alkylthio, hydroxy(lower)alkyl or protected hydroxy(lower)alkyl, R3 is aryl which may have suitable substituent(s), and A  is lower alkylene, or pharmaceutically acceptable salts thereof.  These compounds can be used as dopamine receptor agonist, 5-HT receptor antagonist, especially 5-HT2 receptor antagonist; .alpha.1 receptor antagonists.  The therapeutic treatment of these receptor mediated diseases, particu-larly hypertension, cardiovascular disorder (e.g. angina pectoris, myocardial infarction), Parkinsonism, and the like is also disclosed.  The preparation of these compounds, and pharmaceutical compositions containing them are also described.
Patent CA-2034721-A1 (CA)
Title: Protective bumper strip for vehicle body
Inventor: SADR CHANGIZE
IPC: B60R21/04
Filed: 1991-01-22
Abstract: ABSTRACT OF THE DISCLOSURE           Bumper strips for use on the sides of automobiles are usually produced by the extrusion or injection molding of a plastic.  Such strips may even include two materials of differing hardness.  It has been found that such strips can readily by produced in a one-step molding method in which a tubular parison with a hard plastic body and a pair of opposed longitudinally extending strips of soft plastic compatible with the body plastic is blow molded.  The resulting product includes a hard, tubular, plastic body with soft, flexible wings extending outwardly from the top and bottom edges thereof for bearing against the vehicle body.
Patent CA-2038945-A1 (CA)
Title: Topical delivery of peptides/proteins entrapped in dehydration/rehydration liposomes
Inventor: WEINER NORMAN D
IPC: A61K9/127
Filed: 1990-08-01
Abstract: This invention concerns a topical delivery of small peptides/proteins into the deep tissue of the skin via intradermal permeation.  Small peptides/proteins entrapped in liposomes prepared by dehydration/rehydration method and delivered topically via an intradermal route are useful in treatment of various diseases by depositing the entrapped peptide into the epithelial cells of the deeper tissue of the skin. In particular, this invention is useful in suppression of the development of skin lesions induced by virus, bacteria, inflammation or other causes by treatment of the infected epithelial cells with liposome entrapped small peptide able to reduce the damage to the epithelial cells or inhibit viral replication and expression.
Patent CA-2040248-A1 (CA)
Title: Method of inhibiting gastric acid secretion
Inventor: GIDDA JASWANT S
IPC: A61K31/40
Filed: 1991-04-11
Abstract: The present invention provides a method of inhibiting gastric acid secretion in mammals by administering a 5-HT1A agonist compound or a pharmaceutically acceptable salt thereof.
Patent CA-2040316-A1 (CA)
Inventor: MATSUOKA TOSHIO
IPC: C22B19/30
Filed: 1991-04-12
Abstract: There is disclosed a process for recovering valuable metals from a dust containing zinc comprising mixing the dust containing zinc with a reductant and a flux for regulating the basicity of slag, forming the mixture into pellets with a pelletizer, charging the pellets into a shaft type preheating-prereducing furnace provided with a preheating zone at the upper part and with a reducing zone at the lower part and removing, in the preheating zone, moisture and ignition loss components in the pellets, while prereducing in the reducing zone, the pellets under such conditions that a reduction of iron oxide is made to proceed selectively while the reduciton of zinc oxide is suppressed to the possible minimum, charging the prereduced pellets into a melting furnace to melt and reduce them in the furnace, separating zinc, or zinc and lead, by evaporation followed by condensation to recover them, and separating iron and lead, or iron, according to the difference in their specific gravities to recover the iron as a molten pig iron and the lead as a crude lead.
Patent CA-2041449-A1 (CA)
Title: Repairable guide bar for tree harvesters
Inventor: VANDERZANDEN JAMES L
IPC: B27B17/02
Filed: 1991-04-29
Abstract: ABSTRACT OF THE DISCLOSURE    A guide bar for a mechanical harvester wherein the guide jar is repairable after bending.   The guide bar is provided with a pliable section of lowered hardness in a limited zone between a mounting bracket and the principal cutting portion of the bar.  A hinge area is thereby created in the zone area to permit bending of the bar without breaking.  Reduced hardness is tolerated in the zone area where the least cutting action is encountered.
Patent CA-2041828-A1 (CA)
Title: Viscoelastic solution
Inventor: LINDSTROM RICHARD L
IPC: A61K38/17
Filed: 1991-05-03
Abstract: VISCOELASTIC SOLUTION                   ABSTRACT OF THE DISCLOSURE    Viscoelastic solution including a buffered solu-tion, .01-8% chondroitin sulfate, .1-8% hydroxypropyl methylcellulose, pH adjusted to 6.0-8.0 at a osmolality between 200-400 mOsmol/L. The buffered solution can be HEPES buffered minimum essential media (MEM), phosphate buffer saline (PBS), buffered balanced salt solution, or TC199. A cell growth factor or cell growth supple-ment is included in the solution.