baber/WOPTO huggingface dataset:
Patent CA-2043783-A1 (CA)
Title: Pseudoplastic mixed metal layered hydroxide fluid with fluid loss additive and method of use in penetrating the earth
Inventor: BURBA JOHN L III
IPC: C09K8/20
Filed: 1991-06-03
Abstract: ABSTRACT OF THE DISCLOSURE     The present invention relates to a pseudoplastic fluid composition including water, a mixed metal layered hydroxide dispersed  in  the  water  to  impart  preselected  rheological properties to the fluid and a fluid loss additive composition including one or more of a carboxymethyl substituted vegetable starch,  a carboxymethylated cellulosic compound or mixtures thereof in an amount effective to inhibit loss of fluid and with the  degree  of  substitution  being  selected  so  that  the carboxymethyl  substituted compound is soluble in the fluid at the concentration of use without materially adversely affecting the rheological properties of the fluid and so that the fluid is resistant to fermentation.  The improved composition includes a crosslinked  carboxymethylated vegetable  starch which has  a degree of substitution in the broad range from about 0.3 to about 0.8 and in a narrower range of about 0.4 to about 0.7 and an  uncrosslinked  carboxymethylated  vegetable  starch  or  a carboxymethylated cellulosic which has a degree of substitution in the broad range from about 0.3 to about 0.57 and in a narrower range from about 0.4 to about 0.5.  The drilling method includes drilling while circulating the drilling fluid with the improved composition therein.
Patent CA-2045002-A1 (CA)
Title: Polymer precursors for aluminum nitride
Inventor: JENSEN JAMES A
IPC: C08G79/00
Filed: 1991-06-19
Abstract: 1062p (FF)                          J. A. Jensen Case 1 POLYMER PRECURSORS FOR ALUMINUM NITRIDE                 Abstract of the Disclosure An aluminum-nitrogen polymer is prepared by reacting an organic nitrile with a dialkylaluminum hydride to form an organoaluminum imine, and heating the imine to a temperature of 50° to 200°C.  The polymeric product can be subjected to an additional heat treatment to form a more highly cross-linked polymer.  After either heat treatment the polymeric product can be further reacted with a primary amine or ammonia.  The organoaluminum imine as well as the aminated or nonaminated polymers can be pyrolyzed in a nonoxidizing atmosphere to form an aluminum nitride-containing ceramic.
Patent CA-2053652-A1 (CA)
Title: Measuring technique for coke cte by pressing a pellet
Inventor: HAUSER JEFFREY B
IPC: G01N25/16
Filed: 1991-10-17
Abstract: ABSTRACT OF THE DISCLOSURE       A technique for measuring the coefficient of thermal expansion of calcined petroleum coke.  This technique involves pressing a pellet of calcined coke to determine the coefficient of thermal expansion.  It has the advantage of eliminating the graphitization and machining steps resulting in reduced manpower and turnaround time and requires less sample which allows CTE determination of laboratory scale cokers.  Results show good correlation between this technique and traditional extrusion techniques.
Patent CA-2053997-A1 (CA)
Title: Method for ether formation
Inventor: STULTS JEFFREY S
IPC: C07C205/38
Filed: 1991-10-25
Abstract: A NOVEL METHOD FOR ETHER FORMATION            Abstract A process for the preparation of 1,1'-oxy-bist(-trifluoromethyl-4-nitrobenzene) which comprises reacting a compound of the formula   where X is F, Cl, Br or I; with an inorganic base selected from the group consisting of alkali metal hydroxides, alkali metal carbonates, and alkali metal bicarbonates, in the presence of a catalytic quantity of a benzoate catalyst.  In addition, benzoate esters of 4-nitro-3-(trifluoromethyl)phenol may be isolated.
Patent CA-2054268-A1 (CA)
Title: Nutritional composition
Inventor: LUCA MAURIZIO
IPC: A23L33/15
Filed: 1991-10-25
Abstract: A novel nutritional composition is disclosed which is based on essential amino acids and optionally vitamins, minerals and carbohydrates.
Patent CA-2057596-A1 (CA)
Inventor: KAKU RYOJI
IPC: G02F1/05
Filed: 1991-12-13
Abstract: In a waveguide type optical device which has an optical waveguide and modulation electrodes for varying its refractive index, both formed in the top of a substrate of a ferroelectric crystal having a pyroelectric effect, the top of the crystal substrate being parallel to the direction of its spontaneous polarization, conductive films are formed in two surfaces of the crystal substrate which cross the direction of the spontaneous polarization.  The conductive films are electrically interconnected to thereby prevent a change in the operating temperature characteristic of the optical device which is caused by the pyroelectric effect of the crystal substrate.
Patent CA-2058951-A1 (CA)
Title: Star-wired ring lan
Inventor: BOAL JOHN H
IPC: H04L12/437
Filed: 1990-06-07
Abstract: A hybrid star LAN has an access unit (1) with a port (30) associated with each terminal (2), the port comprising a port input (8) and output (9). A terminal link (3S, 3R) links the terminal to the port. A bypass link (11) is in parallel with the terminal link, and the time delays of the terminal link and the bypass link are matched by appropriate registers (11, 13). A comparator (14) compares the outputs of the terminal and bypass links to detect errors through the terminal link and controls a selector switch (12).  On the LAN, channels are constituted by varying numbers of TDM  slots, as defined by a template stored in the access unit. Each terminal stores that part of the template which defines channels which it can use. Each terminal can also store a second or background template which can be swapped in for the current or foreground template when a change of allocation is desired.
Patent CA-2059507-A1 (CA)
Inventor: NAVILLE CHARLES
IPC: G01V1/37
Filed: 1992-01-16
Abstract: : On transmet dans le sol des impulsions sismiques réparties dans le temps de façon irrégulière (suivant un code aléatoire ou pseudo-aléatoire par exemple) et on capte par un système de réception les ondes directes et celles renvoyées par les discontinuités du sous-sol. Le spectre de fréquence des signaux émis et reçus est subdivise en plusieurs bandes et les composantes des signaux dans chacune des bandes sont réduits à des signaux élémentaires traduisant leurs changement de signe (bit de signe) et enregistrées. Or procède alors pour chaque capteur du système de réception, à une corrélation des signaux élémentaires associés respectivement aux signaux émis et reçus, à une sommations des produits de corrélation associés à chaque capteur, et l'on réalise avec les sommes obtenues, des coupes sismiques très comparables à ce que l'on obtiendrait en numérisant les signaux reçus en pleine précision, comme dans les méthodes classiques. Application à la prospection en 2D ou 3D autour d'un puits en cours de forage avec un outil de forage par exemple.
Patent CA-2061459-A1 (CA)
IPC: B60R13/08
Filed: 1992-02-19
Abstract: A cladding for the engine compartment of a motor vehicle, in particular of an agricultural or industrial vehicle contains cover parts such as engine bonnet (14), front grill (16, 18) and side covers (20, 22, 24) by means of which the engine compartment and, if appropriate, other vehicle components are at least partially covered. In order to impede the transmission of vibrations and the torsions of the engine block or the vehicle base frame (88) to the cover parts and, if appropriate, vehicle components and in order to make assembly easier, a dimensionally stable frame (26) is provided which can be fitted on the engine, a support block attached to the engine or to a vehicle frame (88). The cover parts and, if appropriate, vehicle components can be attached to the frame (26). Preferably, the frame (26) is supported essentially at three points via elastic connecting elements on the supporting block or vehicle frame (88). For example, insulations, damping elements or rubber bearings can be used as the elastic connecting elements (94). 
<IMAGE>
Patent CA-2064665-A1 (CA)
Inventor: GUERET JEAN-LOUIS H
IPC: B65D47/06
Filed: 1992-04-01
Abstract: DISPOSITIF POUR LA DISTRIBUTION DE MOUSSE, ET BOUTON-POUSSOIR POUR UN TEL DISPOSITIF. Le dispositif comprend un moyen de pompage (10) pour faire sortir d'un récipient (R) un liquide avec un agent moussant. Un boutonpoussoir rigide (14) provoque, lors de ses déplacements, une variation de volume d'une chambre annulaire (13), et une valve (22) de reprise d'air permet l'entrée d'air dans cette chambre. L'extrémité du récipient (R) munie du moyen de pompage (10) est fermée par une tête (5) ayant un fond (7) situé en retrait de l'extrémité d'un manchon central (8) portant le moyen de pompage et délimitant, en partie, ladite chambre annulaire (13) tandis que le bouton-poussoir (14) comporte, à sa base, une collerette (17) propre à fermer la chambre annulaire (13) et à y comprimer l'air. (Figure 1).
Patent CA-2066540-A1 (CA)
Title: Multiple User Digital Receiving Apparatus and Method with Time Division Multiplexing
Inventor: KELLEY EDWIN A
IPC: H04B1/16
Filed: 1992-04-21
Abstract: A digital receiver apparatus and method, designed for multiple simultaneous users, digitizes a received analog RF signal and tunes to multiple desired frequencies of the received signal on a time division multiplexed basis. After filtering by a finite impulse response (FIR)  filter that also operates in time division multiplexing for multiple service bands, the selected signals are digitally de-modulated and audio processed, again on a time-shared basis.
Patent CA-2068112-A1 (CA)
Inventor: GRAINDORGE PHILIPPE
IPC: G01N21/45
Filed: 1992-05-07
Abstract: DE DIVULGATION APPAREIL DE MESURE DE L'INDICE DE REFRACTION D'UN FLUIDE L'invention concerne un appareil de mesure de l'indice de réfraction d'un fluide par interféromètrie en lumière blanche, à deux ondes. Chacune des ondes traverse une enceinte (33). Les chemins optiques correspondants (38, 39) ont des longueurs différentes. La source (3) et le récepteur (15, 16, 17) sont chacun reliés à l'interféromètre (37, 41) par une fibre optique (8). Cette disposition permet la mise en oeuvre d'enceinte de grande épaisseur par rapport à la différence de longueurs des chemins. Figure n.degree. 1
Patent CA-2068483-A1 (CA)
Inventor: SIRHAN MOTASIM M
IPC: A61M29/02
Filed: 1992-05-12
Abstract: LOW PROFILE DILATATION CATHETER                      ABSTRACT OF THE DISCLOSURE   An intravascular catheter, such as a balloon dilatation catheter, which has a distal section wherein a small dimensioned distal section of an outer tubular member is bonded to an inner tubular member over a significant portion thereof to provide a catheter shaft having small transverse dimensions and improved flexibility with little or no loss is pushability. The catheter construction can be employed in a wide variety of catheters.     C:\WP51\SPECS\700617.CAN
Patent CA-2068965-A1 (CA)
Title: Dual reflector scanning antenna system
Inventor: SEATON ARTHUR F
IPC: H01Q3/20
Filed: 1992-05-19
Abstract: ABSTRACT       A fixed feed dual reflector scanning antenna system 10 having a low moment of inertia is disclosed herein. The inventive dual reflector antenna system 10 includes an antenna feed structure 16 for emitting electromagnetic radiation.   The antenna system 10 further includes a subreflector 12 for redirecting the emitted radiation. The subreflector 12 is intersected by a subreflector longitudinal axis Ls at a rotation point proximate a vertex 20 of the subreflector 12. A main antenna reflec-tor 14 circumscribing a main longitudinal axis Lm projects radiation redirected by the subreflector 12 as an antenna beam. A mechanical arrangement 22 rotates the subreflector 12 about the rotation point so as to vary the angular orientation between the subreflector longitu-dinal axis Ls and the main longitudinal axis Lm.  In this manner the antenna beam is scanned  relative to the main longitudinal axis Lm.
Patent CA-2069655-A1 (CA)
Title: Process for the preparation of linear polymers of carbon monoxide with one or more olefinically unsaturated compounds
Inventor: BUIJSINGH PAULUS D
IPC: C08J3/09
Filed: 1992-05-27
Abstract: Process for the preparation of polymers in which process linear alternating polymers of carbon monoxide with one or more olefinically unsaturated compounds are prepared by contacting the monomers at an elevated temperature and pressure with a catalyst in a diluent in which diluent the catalyst is dissolved and the formed polymers form a suspension, which contacting takes place in a system comprising at least one reactor and at least one mechanical contact zone wherein the volume of the suspension present in the mechanical contact zone(s) is substantially less than the volume of the suspension present in the reactor(s), the suspension is passed through the mechanical contact zone(s) and high shearing forces are exerted on the polymer particles dispersed in the suspension present in the mechanical contact zone.
Patent CA-2069911-A1 (CA)
Title: Semiconductor device
Inventor: SVEDBERG PER
IPC: H01L29/786
Filed: 1990-10-19
Abstract: ABSTRACT            A semiconductor device, preferably for switching purposes, has a first field effect transistor (31, 32, 33) of enhancement type provided on a substrate (1).  The transistor is separated from the substrate by an electrically insulating layer (2).  On the transistor an insulating layer (9) is arranged and on this layer a second field effect transistor (51, 52, 53) is provided.  The transistors are arranged such that their channel regions (32, 52) cover each other.  The source regions (31, 51) and drain regions (33, 53) of the transistors have contacts (311, 511; 331, 531) for connection of control voltages between the source regions mutually and between the drain regions mutually.  The transistors are of enhancement type. One of the transistors is of N-type (N-conducting type) and the other transistor is of P-type (P-conducting type).  By applying control voltages between the two source contacts mutually and the two drain contacts mutually and of such polarity that the transistor of P-type becomes positive in relation to the transistor of N-type, conducting channels are produced in the confronting surfaces of the channel regions, and the transistors change into conducting state. Further, the component has connections (312, 332) for connection of a load circuit.   (Fig. 1)
Patent CA-2070869-A1 (CA)
Title: Umbrella cover connector system
Inventor: LIOU FU-TIEN
IPC: A45B25/10
Filed: 1992-06-09
Abstract: Umbrella Cover Connector System Abstract of the Disclosure An umbrella cover connector system in which a mechanical  latch holds a ferrule  in  interfitted relation  with  a  notch,  the  umbrella  cover  being located therebetween.   The mechanical latch is par-tially carried by the notch and partially carried by the ferrule.  The latch includes a spring loaded latch nose preferably connected to the ferrule which is adapted to extend into a bore preferably defined in the ferrule.  Upon assembly, the spring loaded latch nose is extended into the throughbore until the latch nose springs into latched relation with a latch seat defined by the ferrule.
Patent CA-2071000-A1 (CA)
Title: 5-oxygenated-2,4,6-triaminopyrimidines
Inventor: MCCALL JOHN M
IPC: A61P43/00
Filed: 1991-01-08
Abstract: The present invention discloses 5-oxygenated amino substituted pyrimidines (X), where R1 is (1) steroid substituent of formula (Steroid), (2) trolox substituent of formula (trolox), (3) an alkyl substituent selected from the group consisting of (A)Q2-(CH2)n2. Also disclosed are the oxygenated N,N-disubstituted pyrimidines (XIII) all of which are useful for treating a number of conditions including head injury, stroke, spinal cord injury, etc.  Useful intermediates including the protected 5-oxygenated pyrimidines (VII) and the 5-oxygenated pyrimidines (VIII) are also disclosed. Further disclosed are 5-hydroxy amino substituted pyrimidines (XI).
Patent CA-2071191-A1 (CA)
Title: Multi-function telephone apparatus and control method
Inventor: KOURA MASAHIRO
IPC: H04M1/247
Filed: 1992-06-12
Abstract: ABSTRACT OF THE DISCLOSURE This disclosure relates to a multi-function telephone apparatus and a control method therefor.          When an application program (hereinafter referred to as program) stored in an IC card is executed, a state of the program execution and an incoming/outgoing call are supervised.  It is controlled in a way that the execution of the program is automatically suppressed at the time of incoming/outgoing call and restarted from the point it was suppressed when the telephone was completed.  Further, when the terminal emulation program stored in the IC card emulates the telephone apparatus as a terminal of the host system, the communication with the host is efficiently executed with reduction of the line load.
Patent CA-2074969-A1 (CA)
Title: Damper closures
Inventor: PENNA ANTHONY D
IPC: F24F13/10
Filed: 1992-07-30
Abstract: ABSTRACT A damper mechanism includes a frame defining an aperture and a closure for the aperture. The closure is hinged at the edge of the aperture such that the closure can swing between a first position in which it closes the aperture and asecond position in which the aperture is open. A crank arm is mounted for rotation about a crank axis, and a link is connected between the closure and thecrank arm in such a way that the crank arm can be moved between a first control position in which the closure closes the aperture and a second control position in which the closure leaves the aperture open. The configuration of the mechanism is such that, as the crank arm approaches its first control position from its second control position, the mechanical advantage of the crank arm increases.
Patent CA-2078008-A1 (CA)
Title: System for creating on site, remote from a sterile environment, parenteral solutions
Inventor: FINLEY MIKE
IPC: A61J1/20
Filed: 1991-09-27
Abstract: The present invention provides a system and method for creating on site, remote from a sterile environment, parenteral solutions in large volume parenteral containers for intravenous administration to a patient.    In an embodiment, this system comprises an empty large volume contain-er (210) including at least one port (224) for accessing an interior (216) of the container (210). The port includes a sterilizing filter (228) for steriliz-ing a fluid fed through the port (224) into the container (210). A second container (250) is provided including a solute (252) and having means for coupling (254) the second container (250) to the large volume container (210) and thereby providing fluid communication therebetween allowing the solute (252) to be received within the interior (216) of the container (210). A sterile water source (230) is also provided including means (256) for placing the sterile water source (230) in fluid communication with the port (224) and allowing water to flow from the sterile water source (230) into the interior (216) of the container (210). This allows the solute (252) and sterile water that has been fed through the filter (228) to create a par-enteral solution in the large volume parenteral container (210).
Patent CA-2080027-A1 (CA)
Title: Asymmetrical pulse width modulated resonant dc/dc converter
Inventor: JAIN PRAVEEN K
IPC: H02M3/335
Filed: 1992-10-07
Abstract: New topologies for pulse width modulated resonant DC/DC converters are disclosed. The converters include a bridged chopper to convert the DC input to a high frequency AC which in turn is fed to a high frequency transformer whose secondary AC is rectified and filtered to produce a stable DC output. The bridged chopper has at least two semiconductor switches which alternately conduct. The duty cycles of the conduction of the switches are complementary with one another and adjustable to control the stable DC output. A resonant circuit is connected between the chopper and the high frequency transformer and contains a series capacitor, and a series or parallel inductor depending upon the preferred embodiment.
Patent CA-2080675-A1 (CA)
Title: Nestable hinged-lid container for the display and storage of consumer articles
Inventor: GOULETTE STEPHEN L
IPC: B65D43/16
Filed: 1992-10-15
Abstract: NESTABLE HINGED-LID CONTAINER FOR THE DISPLAY AND STORAGE OF CONSUMER ARTICLES                     Abstract of the Disclosure A nestable hinged container for packaging consumer articles.   The container includes a receptacle having a base formed with relation to the consumer article, the base terminating in an uppermost edge having an outer  periphery,  the  receptacle further having  an upstanding peripheral side wall integral to the outer periphery of the uppermost edge of the base, the peripheral side wall terminating at an upper end thereof in an outwardly projecting peripheral rim flange; and a lid hingedly connected to the receptacle, the lid having an an outwardly projecting peripheral rim flange and an inwardly projecting concave portion located on an upper surface  of the lid, the concave portion formed in relation to the base so as to enable nested stacking of a plurality of the containers.
Patent CA-2082263-A1 (CA)
Title: Chopper circuit for dynamic braking in an electric power conversion system
Inventor: KUMAR AJITH K
IPC: H02P3/22
Filed: 1992-01-24
Abstract: An improved electrical circuit configuration for a chopper circuit is disclosed which is particularly adapted for use with an inductive load such as a braking resistor (38) of the type used in many rapid transit vehicles. Instead of connecting a di/dt reactor directly in series with the electronic switch of the chopper circuit, a di/dt reactor (84) is connected in series with the freewheeling diode (46). Using this configuration, the di/dt reactor (84) does not have to continuously handle the average current through the electronic switch (42) during the entire chopping operation. Hence, a much smaller, lighter, and less expensive di/dt reactor (84) can be utilized.
Patent CA-2082376-A1 (CA)
Title: Single chamber wood stove including gaseous hydrocarbon supply
Inventor: MCCRILLIS ROBERT C
IPC: F24C1/04
Filed: 1992-11-06
Abstract: A  single  chamber  wood  stove  has  primary  and secondary combustion   zones   in   direct   fluid   flow communication with each other.   Air  from outside  the stove is supplied to the primary and secondary combustion zones.   Gaseous hydrocarbon fuel from a source located outside  the  stove  is selectively  supplied  to  the secondary combustion zone and is ignited by a glow plug in the secondary combustion zone in response to a signal derived by a temperature detector in the secondary zone. The  gaseous  hydrocarbon  fuel  flows  to the  secondary combustion zone at a rate in the range of about 0.25 to 3 cubic feet  per  hour.    The  fuel  is  supplied  to  the secondary  zone when the  secondary zone  temperature  is above carbon monoxide ignition temperature.
Patent CA-2084403-A1 (CA)
Title: Method and apparatus for signalling
Inventor: ROBERTS LYN M
IPC: H04B3/54
Filed: 1991-06-05
Abstract: Apparatus for coupling signals between a network of low but unknown impedance and a transceiver comprises a series resonant circuit (31, 32) terminated with a high impedance and a parallel resonant circuit (36, 37) terminated with a low value resistor (38). A  power amplifier (39) is provided for transmitting and switching means (34) to switch between the two circuits. The signal is monitored to produce an appropriate signal level for coupling to the network. A particular use of this apparatus is in electricity supply to read meters. Polling messages are transmitted from a substation to a plurality of meters with the phase of the data bit timing maintained between transmitters and in the response from the meters. Transmission of the signals with high immunity to noise and narrow bandwidth is achieved by complex phase modulation of the carrier. A binary phase shift keyed signal produces signals with a bandwidth less than the frequencies allocated to metering applications and interference between signals can be avoided by frequency division multiplexing.