baber/WOPTO huggingface dataset:
Patent CA-1302395-C (CA)
Title: Heat exchanger tube having minute internal fins
Inventor: BERGT CARL
IPC: F28F1/40
Filed: 1988-04-25
Granted: 1992-06-02
Abstract: Title HEAT EXCHANGER TUBE HAVING  MINUTE INTERNAL FINS                      Inventor Carl Bergt Abstract A heat exchanger includes heat exchanger tubes with minute internal fins disposed at a minimal helix angle with respect to a longitudinal axis of the tube.  When conveying a refrigerant, the minimal helix angle provides surprisingly better heat transfer rates than other tubes having greater helix angles.
Patent CA-1288307-C (CA)
Title: Atheroectomy catheter
Inventor: RYDELL MARK A
IPC: A61B17/00
Filed: 1988-04-28
Granted: 1991-09-03
Abstract: ATHERECTOMY CATHETER                             ABSTRACT      An atherectomy catheter device for facilitating the restoration of patency to a blood vessel occluded with an atheroma or other similar lesion or thrombus comprising an outer flexible plastic tubular member having a plurality of ports proximate its distal end and concentrically surrounding an inner flexible plastic tubular member having a cutting loop at its distal end.  The distal end portion of the inner tubular member is journaled for rotation in the distal end portion (in Zone 22) of the outer tubular member. Means are provided at the proximal end of the catheter assembly for rotatably driving the inner tubular member and the cutting loop thereof while flushing the treatment site and aspirating the flushing liquid, blood and any debris loosened during the procedure.
Patent CA-1319594-C (CA)
Title: Process and reagent for the determination of fructosamine in body fluids
Inventor: VOGT BERND
IPC: C12Q1/00
Filed: 1988-04-29
Granted: 1993-06-29
Abstract: ABSTRACT    Process and reagent for the determination of fructosamine in body fluids The present invention provides a process for the determination of fructosamine in body fluids by the reaction of a sample solution with a colour reagent, wherein the sample liquid is mixed with a buffer solution with a pH value of from 9 to 12, a colour-forming reagent and uricase, as well as with at least one detergent, and the chronological change of the extinction is measured kinetically in a temperature range of from 20 to 40°C. at the earliest after 5 minutes.      The present invention also provides a reagent for the determination of fructosamine in body fluids, containing a colour reagent and an oxidising-acting enzyme, wherein it contains a buffer substance with a pH value of from 9 to 12, a colour-forming compound, uricase, as well as at least one detergent.
Patent CA-1311831-C (CA)
Title: Methode de prospection sismique permettant une connaissance amelioree des discontinuites geologiques du sous-sol
Inventor: DUBESSET MICHEL
IPC: G01V1/40
Filed: 1988-05-06
Granted: 1992-12-22
Abstract: Precis de la divulgation : Méthode de prospection sismique permettant une connaissance améliorée de l'emplacement et de la nature des discontinuités géologiques du sous-sol. Elle consiste essentiellement à capter des ondes sismiques qui se sont propagées dans des terrains au moyen d'un ou plusieurs récepteurs sismiques comportant chacun trois capteurs directionnels orientés suivant trois axes orthogonaux et à déterminer par combinaison des signaux fournis par les capteurs de chaque récepteur, la position réelle dans l'espace et la forme de la trajectoire décrite par le centre de gravité de chaque récepteur, en réponse aux ondes reçues, à effectuer des enregistrements des variations de ces différents paramètres en fonction de la distance des récepteurs au lieu d'émission et à localiser les emplacements de réception où se produisent des variations importantes de ces paramètres. Application au pointage des horizontaux géologiques.
Patent CA-1286954-C (CA)
Title: Circular saw blade
Inventor: GELMAN MARK
IPC: B27B33/08
Filed: 1988-05-16
Granted: 1991-07-30
Abstract: CIRCULAR SAW BLADE                         ABSTRACT OF THE DISCLOSURE A rotary saw blade having a substantially circular disc with opposed parallel faces and a centrally located opening through the disc to receive a drive member to rotate the disc. The outer edge of the disc has a plurality of equallyspaced depth gauge protuberances located around its periphery and a pair of spaced holes extend through the disc adjacent to the outer edge at each protuberance. A saw tooth is attached to the disc on one face at alternate pairsof holes and a saw tooth is attached to the disc on the opposite face at the remaining pairs of holes. Each saw tooth has a cutting edge and a depth gauge and the depth gauge on each saw tooth has a shape and a size which are complementary with a depth gauge protuberance on the outer edge of the disc, and a face of the depth gauge on each saw tooth is in contact with a face of a protuberance on the outer edge of the disc. Each saw tooth is attached to the disc by rivets.
Patent CA-1334049-C (CA)
Title: Procede de traitement de silicopyrohydrolyse, de brasquages uses provenant de cuves d'electrolyse haal-heroult
Inventor: LEROY MICHEL
IPC: C01B7/19
Filed: 1988-05-30
Granted: 1995-01-24
Abstract: L'invention concerne un procédé de traitement par silicopyrohydrolyse de brasquages usés provenant notamment de cuves d'électrolyse Hall-Héroult et constitués d'un mélange de produits carbonés et de produits silico-alumineux, imprégnés de composés minéraux fluorés notamment de sodium, de calcium et d'aluminium. Ce procédé consiste à transformer ces brasquages par traitement à une température au moins égale à 1000.degree.C au moyen d'un gaz oxydant, de vapeur d'eau et de silice, d'une part en une phase gazeuse, entraînant la plus grande partie du fluor, sous forme d'acide fluorhydrique et du carbone sous forme de dioxyde et de monoxyde de carbone, et d'autre part, en une phase au moins partiellement liquide, contenant le silicium, l'aluminium, le calcium et le sodium et la plupart des autres impuretés (fer, titane, métaux lourds...) sous forme de composés oxydés, essentiellement sous forme de silicates. Ce procédé qui peut être mis en oeuvre en un seul stade, ou en deux stades, dans deux réacteurs successifs, permet avantageusement de traiter les brasquages pouvant comporter des teneurs élevées en silice dans des conditions économiques et offrant toute sécurité pour l'environnement, notamment par récupération des dérivés fluorés et destruction totale des cyanures.
Patent CA-1340791-C (CA)
Title: Magenta dye-forming coupler
Inventor: KIMURA KEIZO
IPC: G03C7/38
Filed: 1988-06-06
Granted: 1999-10-19
Abstract: There are provided 1H-pyrazolo[1,5-b]-1,2,4-triazole magenta couplers or 1H-pyrazolo[5,1-c]-1,2,4-triazole magenta couplers characterized by having at the 6-position a phenoxy group, on the ortho-position of which is an alkoxy group or an aryloxy group. A photographic material comprising the magenta coupler is excellent in color reproducibility and exhibits superior photographic characteristics in any of sensitivity, gradation, and color density.
Patent CA-1313641-C (CA)
Title: Method for reclaiming carbonaceous material from a waste material
Inventor: FADER JOHN H
IPC: C01B31/02
Filed: 1988-08-15
Granted: 1993-02-16
Abstract: ABSTRACT OF THE DISCLOSURE     A method for reclaiming carbon black from scrap rubber material including the following steps.  The scrap rubber material is first pyrolyzed to produce a char material that contains a mixture of agglomerated or cluster particles which consist of agglomerations of finer carbon black particles and unitary grit like particles.  The agglomerated particles are then selectively de-agglomerated by agitation of the char material into the finite component  particles  of  carbon  black.   These  finite component particles are then seperated from the unitary particles to obtain a final carbon black which is comparable to commercial grade carbon blacks.
Patent CA-1289251-C (CA)
Title: Digital first order hold circuit
Inventor: CHAN FRED N
IPC: G05B15/02
Filed: 1988-08-18
Granted: 1991-09-17
Abstract: DIGITAL FIRST ORDER HOLD CIRCUIT                ABSTRACT OF THE DISCLOSURE There is provided a digitally controlled first order hold circuit and waveform synthesizer for digitally controlling the representation of a function over an approximation interval.  In accordance with the operation of the invention, the first order hold circuit and wave-form generator receives a digital data input signal which contains initial condition data, up/down data, and slope data for the approximation interval.  The initial condition data is loaded into an up/down counter which is incremented using counting data at a rate de-pending on the value of the slope data and in a direction depending on the value of the up/down data.  In order to minimize delays arising from data acquisition, two frequency synthesizer circuits are provided such that one frequency synthesizer provides counting data while the other frequency synthesizer receives slope data. During alternating intervals, the other frequency syn-thesizer circuit provides counting data while the other circuit receives slope data.  In addition, long length data input signals covering a plurality of approximation intervals are provided to reduce the demands on a main system central processing unit.
Patent CA-1341341-C (CA)
Inventor: MIMMS LARRY T
IPC: G01N33/543
Filed: 1988-10-26
Granted: 2002-02-19
Abstract: This invention relates to improved "sandwich" immunoassays for antibodies in body fluids of the type where antigen specific for the antibody to be detected is disposed on a solid support and binds antibody from the body fluid, from which the antibody bound to the solid support is detected by a labeled antigen to the antibody to be detected.      The improvement comprises using antigens from heterologous cell sources.
Patent CA-1329975-C (CA)
Inventor: ASARI TAKASHI
IPC: B22D11/06
Filed: 1988-10-28
Granted: 1994-06-07
Abstract: ABSTRACT OF THE DISCLOSURE         A casting method and apparatus making use of a twin belt caster which has an upper belt, a lower belt and dam members disposed between both opposing longitudinal edges of the upper and lower belts.  The upper belt, lower belt and dam members in cooperation provide a continuous casting mold which is inclined at a predetermined angle from the horizontal plane and into which a melt of steel is poured.  The lower belt pro-vides a smaller cooling effect than the upper belt so that the solidification of the melt is retarded in the region near the lower belt as compared with the region near the upper belt.
Patent CA-1321587-C (CA)
Title: Quinoxaline compounds and their preparation and use
Inventor: HONORE TAGE
IPC: C07D241/52
Filed: 1988-11-03
Granted: 1993-08-24
Abstract: ABSTRACT            Heterocyclic dihydroxyquinoxaline compounds having the formula   wherein R1 is C1-12-alkyl, which may obtionally be substituted by hydroxy, formyl, carboxy, carboxylic esters, amides or ami-nes, C3-8-cycloalkyl, aryl, aralkyl; and wherein R6 is, hy-drogen, halogen, CN, CF3, NO2, or OR', wherein R' is C1-4-alkyl and R5, R7 and R8  is hydrogen, provided R6  is not CF3, OCH3, NO2, CL or Br when R1 is CH3; or R6 and R7 independently are NO2, halogen, CN, CF3, or OR', wherein R' is C1-4-alkyl, and R5 and R8 are each hydrogen; or R5 and R6 together form a further fused aromatic ring, which may be substituted with halogen, NO2, CN, CF3 or OR', wherein R' is C1-4-alkyl, and R7  and R8  independently are hydrogen, halogen, CN, CF3, NO2 or OR', wherein R' is C1-4-alkyl; or R7 and R8 together form a further fused aromatic ring, which may be substituted with halogen, NO2, CN, CF3 or OR', wherein R' is C1-4-alkyl, and R5  and R6  independently are hydrogen, halogen, CN, CF3, NO2 or OR', wherein R' is C1-4-alkyl.     The invention also relates to a method of preparing the compounds, pharmaceutical compositions thereof, and their use.            The compounds are useful in the treatment of indications caused by hyperactivity of the excitatory neurotransmitters, particularly the quisqualate receptors, and especially as neuroleptics.
Patent CA-1328636-C (CA)
Title: Hydroconversion process using aromatic metal chelate compositions
Inventor: SCHLOSBERG RICHARD H
IPC: C10G49/04
Filed: 1989-01-06
Granted: 1994-04-19
Abstract: ABSTRACT OF THE DISCLOSURE           Disclosed   are   hydroconversion   processes catalyzed by aromatic-metal chelate compositions  which are deficient in hydrogen, are cross-linked, and  which are comprised of  two or more  heteroatoms, wherein  at least ne of the heteroatoms are part of a 5 to 6 member heterocyclic ring, and wherein the metal constituent is selected from Groups III, IVB, VB, VIB, VIIB, and  VIII of  the  Periodic  Table  of  the  Elements,  and   the heteroatom  is  selected   from  sulfur,  oxygen,   and nitroaen.
Patent CA-1328815-C (CA)
Title: Shampoo compositions
Inventor: MCCALL PATRICK C
IPC: A61K8/42
Filed: 1989-01-25
Granted: 1994-04-26
Abstract: Abstract Disclosed  are  selenium  sulfide  lotion  shampoos containing a mixture of xanthan gum and magnesium aluminum silicate as a suspending system.  It comprises (a)    from about 10% to about 30% of a synthetic surfactant selected from  the  group   consisting   of   anionic   surfactant, zwitterionic  surfactants,   amphoteric  surfactants   and mixtures thereof:  (b)  from about 0.1% to about 5.0% of selenium sulfide having an average particle size of less than about 25 µm; (c) from about 0.02% to about 0.40% of a xanthan gum:  (d)  from about  0.5%  to  about  2.0%  of  a magnesium aluminum silicate  and (e) the remainder water.
Patent CA-1317382-C (CA)
Title: Artificial intelligence transformation and delivery method and apparatus
Inventor: GORDON O MICHAEL
IPC: G06N5/04
Filed: 1989-01-25
Granted: 1993-05-04
Abstract: ARTIFICIAL INTELLIGENCE TRANSFORMATION AND          DELIVERY METHOD AND APPARATUS     Abstract Disclosed is a system that provides an expert system's equivalent consultation without containing either the original knowledge base or the inferencing and logic shell of an expert system.  System and process implementations provide a transformation and capture of an original expert system's knowledge base which has been exercised through a full series of all possible consultations utilizing the expert system's shell and knowledge base.  The resulting transformation of a knowledge base is captured in the form of tabular histories and made available to a user via a table driver access mechanism.  Results identical to those pro-duced on original expert system are obtained in a system containing neither the knowledge base nor the inferencing and logic mechanisms. The system provides an identical dialog of interaction with a human user and produces the same conclusions as the original expert system but requires only a small fraction of the computational and memory resources needed for running the original expert system.
Patent CA-1319377-C (CA)
Title: Security for images formed by impace based systems
Inventor: BRUNEA ROBERT W
IPC: B41M3/14
Filed: 1989-01-26
Granted: 1993-06-22
Abstract: Abstract of the Disclosure Methods for preventing or reducing the likelihood of successful alteration of information printed on a document, wherein a detectable substance is released from ruptured microcapsules onto the document in image areas.  The substance penetrates through the document to form a confirming image on the reverse surface.  Another detectable substance of lesser penetrating ability simultaneously may be released onto the document in the image areas.  Spreading of the first substance outside the boundaries of the image area created by the second substance may produce a halo effect around the image area.          Documents as treated by the methods are disclosed, as well as articles comprising a document to be treated in contact with a sheet coated with the detectable substance.  The first substance is microencapsulated, the second substance may or may not be microencapsulated.
Patent CA-1330504-C (CA)
Inventor: KUNSTMANN UWE
IPC: B65G69/04
Filed: 1989-02-09
Granted: 1994-07-05
Abstract: PROCESS AND APPARATUS FOR PRODUCTION OF UNIFORMLY DISCHARGED PARTICLE FLOW                    Abstract of the Disclosure In a process for the production of a uniform flow of particles to be discharged over the width of a hopper, such as cellulose or mineral fibers or glue-coated chips or mixtures for the production of boards consisting of these materials, a feeding device is arranged above the hopper transversely to the longitudinal axis of the hopper for discharging particles into the hopper.  A stationary feed arranged to the side of the hopper supplies particles to the feeding device.  The feeding device includes a horizontal belt conveyor which carries the particles from the stationary feed to the hopper.  The entire feeding device moves back and forth during this procedure whereby the particles are deposited  into the hopper from one side thereof to the other.  This prevents or substantially eliminates the particles from lumping or sticking together in the hopper which might otherwise occur if the particles were simply directly supplied to the hopper from a stationary source.
Patent CA-1319395-C (CA)
Title: Identification of fluids and an interface between fluids
Inventor: LEE DAVID O
IPC: G01R27/22
Filed: 1989-03-09
Granted: 1993-06-22
Abstract: S-65,242 IDENTIFICATION OF FLUIDS AND AN INTERFACE BETWEEN FLUIDS     ABSTRACT OF THE DISCLOSURE Complex impedance measured over a predefined frequency range is used to determine the identity of different oils in a column.  The location of an interface between the oils is determined from the percent frequency effects of the complex impedance measured across the interface.
Patent CA-1328558-C (CA)
Inventor: MURAYAMA KATSUTOSHI
IPC: B01J8/06
Filed: 1989-04-11
Granted: 1994-04-19
Abstract: ABSTRACT           A hydrocarbon-reforming reactor by a steam reforming reaction and a partial oxidation reaction, which comprises a chamber for feeding oxygen-containing gas, a chamber for feeding a mixture gas of hydrocarbon with steam and a chamber for heat exchange of reformed gas in this order from one side of the reforming reactor, and which further comprises a catalyst layer filled in a space between an inner tube having an opening to the chamber for feeding oxygen-containing gas and a reaction tube being so placed as to position the inner tube in its middle portion and having an opening to the chamber for feeding the mixture gas, and a process for producing reformed gas from hydrocarbon which comprises carrying out a steam reforming reaction in the catalyst layer on the side of the chamber for feeding the mixture gas of hydrocarbon with steam by feeding the mixture gas of hydrocarbon with steam to the catalyst layer from the chamber for feeding the mixture gas, carrying out a partial oxidation reaction and steam reforming reaction by feeding oxygen-containing gas fed into the inner tube through the chamber for feeding oxygen-containing gas to the catalyst layer through holes or slits provided in that part of the inner tube which is located opposite to the chamber for feeding the mixture gas, and allowing the resultant, reformed gas to move out of the reforming reactor from the reaction tube through the chamber for heat exchange of reformed gas.
Patent CA-1310524-C (CA)
Title: Cantilevered washer for a fastener
Inventor: GOFORTHE RONALD D
IPC: F16B43/00
Filed: 1989-04-21
Granted: 1992-11-24
Abstract: ABSTRACT   A washer for a threaded fastener, said washer having a center axis, said washer comprising: a conical seat portion having a conically-shaped seat; an annular ring portion; a cantilever portion located between said conical seat por-tion and said annular ring portion, said cantilever portion being integral with said conical seat portion and said annular ring portion, said can-tilever portion causing said conical seat portion to be offset along said center axis relative to said annular ring portion.
Patent CA-1324206-C (CA)
Inventor: O'MAHONY MICHAEL J
IPC: H01S5/06
Filed: 1989-04-21
Granted: 1993-11-09
Abstract: ABSTRACT NON-LINEAR OPTICAL AMPLIFICATION A optical amplifier having a saturable absorption region is operated below the lasing threshold for the device.  Non-linear effects and bistability are observable at temperature above room temperature.  A selected input wavelength .lambda.i within the gain spectrum of the device is amplified and an output at the same wavelength .lambda.i is produced.  This is in contrast to the normal operation at threshold, where there is a wavelength shift to the lasing wavelength and, depending on the laser used for the saturable absorption device, the output may be multimode for a monomode input.  Best gain is achieved by tuning the input wavelength to a peak of a Fabry-Perot mode in the gain spectrum for the amplifier.      The amplifier may be used as a wavelength controlled optical switch, when operated bistably, or as a regenerative amplifier when operated in the non-linear region without hysteresis effects.
Patent CA-1298187-C (CA)
Title: Adjustable debris tray assembly for podiatry chair
Inventor: JONES LARRY
IPC: A61G15/10
Filed: 1989-04-28
Granted: 1992-03-31
Abstract: Abstract Podiatry chair having a debris tray slidably positioned adjacent the chair foot section.  The debris tray is mounted on and carried by a bracket having a pair of forwardly extending arms having grooves formed therein. Knurled torque knobs are threaded through the bracket arm grooves and are received in threaded apertures formed in the tray sidewalls to provide for angular adjustment and positioning of the debris tray in an infinite number of angular positions relative to the chair foot section.
Patent CA-1335835-C (CA)
Inventor: LEUNG WU-HON F
IPC: H04L12/56
Filed: 1989-05-02
Granted: 1995-06-06
Abstract: A packet switch arrangement in which a first plurality of user devices is connected to a packet network by a first interface unit and a second plurality of user devices is connected to the packet network by a second interface unit. A virtual circuit is established between the interface units and control information is exchanged over the virtual circuit. The control information defines virtual channels on the virtual circuit and ones of the first and second pluralities of user devices which are to be sources and destinations for data in the defined virtualchannels. Data from user devices is packetized and transmitted in the virtual channels by the interface units in accordance with the exchanged control information. Further, packets received in virtual channels on the virtual circuit are distributed to user devices by the interface units in accordance with exchanged control information.
Patent CA-1323514-C (CA)
Inventor: BRADLEY WILLIAM D
IPC: F16B19/10
Filed: 1989-05-26
Granted: 1993-10-26
Abstract: ABSTRACT     A blind rivet able to be anchored in material such as softwood, without the need to break through the blind face (36) of the material, comprises a tubular shell (14) and a stem  (15)  which extends through the shell.   The shell (14) has a preformed head (18) at one end of a shank (17).  An end portion (19) of the shank remote from the head (18)  has a thinner wall  (21)  than the main, next adjacent, portion of the shank, and is thus weakened and made more easily expandible.     The stem (15) has a plugging portion (28) having an expander head (29)  adjacent the thin-walled end portion (19) of the shell, a breakneck (27), and a pulling portion (26) which projects from the head end of the shell.  The expander head (29)  increases in diameter away from the pulling portion   (26),   and  presents  a  plurality  of longitudinal cutting elements (24) generally towards the weakened end portion (19) of the shell.   On gripping the pulling portion  (26)  and  pulling  the  stem  (15),  the cutting elements split the end portion (19) of the shell into a plurality of legs  (37), while the expander head (29) enters into the end portion (19) and forces the legs (37) outwardly.  The main part of the shank (17) has a smaller diameter bore (20) than the weakened end portion (19), and  resists  entry  of  the  expander  head  (29).                                                    P.331