baber/WOPTO huggingface dataset:
Patent CA-2068766-A1 (CA)
Title: Benzofuran derivatives
Inventor: ROSS BARRY C
IPC: A61K31/415
Filed: 1992-05-15
Abstract: ABSTRACT    BENZOFURAN DERIVATIVES            The invention provides compounds of the general formula (I):       or a physiologically acceptable salt, solvate or metabolically labile ester thereof wherein R1 represents a hydrogen atom or a halogen atom or a group selected from C1-6alkyl, C2-6alkenyl, fluoroC1-6alkyl, Cl-6alkoxy ,-cao, -CO2H or -COR; Ar represents the group     ;     R2 represents a group selected from C1-6alkyl, C2-6alkenyl, C1-6alkoxy or the group -NR13R14; R3 represents a group selected from -CO2H, -NHSO2CF3 or a C-linked tetrazolyl group; R4 and R5 which may be the same or different each independently represent a hydrogen atom or a halogen atom or a C1-6alkyl group; Het represents the group   ;         R6 represents a hydrogen atom or a group selected from C1-6alkyl, C2-6alkenyl, C1-6alkylthio, C1-6alkoxy, C3-7cycloalkyl or C3-7cycloalkylC1-4alkyl;     R7 represents a hydrogen atom or a halogen atom or a group selected from cyano, nitro, C1-6alkyl, C2-6alkenyl, fluoroC1-6alkyl, -(CH2)mR9, -(CH2)nCOR10, -(CH2)pNR11COR12, C3-7cycloalkyl or C3-7cycloalkylC1-4alkyl; R8 represents a hydrogen atom or a halogen atom or a group selected from cyano, nitro, C1-6alkyl, C2-6alkenyl, fluoroC1-6alkyl, -(CH2)mR9, -(CH2)nCOR10 or -(CH2)pNR11COR12; and R9, R10, R11, R12, R13 and R14 are a variety of groups and substituents; with the proviso that when R6 represents a hydrogen atom or a group selected from Cl-6alkyl, C2-6alkenyl or C1-6alkylthio, R7 represents a group selected from C3-7cycloalkyl or C3-7cycloalkylC1-4alkyl.     The compounds may be used in the treatment or prophylaxis of hypertension and diseases associated with cognitive disorders.
Patent CA-2071218-A1 (CA)
Inventor: KOHLER NORBERT
IPC: C08L5/00
Filed: 1991-10-28
Abstract: 19 L'invention a pour objet l'utilisation de nouvelles compositions de gels utilisables pour la réduction de la production d'eau dans les puits producteurs d'huile ou de gaz. Les compositions de gels comprennent une solution d'au moins un complexe hydrosoluble d'un cation métallique polyvalent comme le lactate de zirconium capable de réticuler un polysaccharide non ionique tel que le scléroglucane, à une concentration de 2 à 10 000 parties par million de parties, exprimée en poids dedioxyde de métal. Avec une concentration préferée de 2 à 100 ppm, la perméabilité à l'huile n'est sensiblement pas affectée. Les compositions permettent la formation de gels aqueux de scléroglucane utilisables pour la prévention des venues d'eau dans les puits de production d'hydrocarbures.
Patent CA-2072191-A1 (CA)
Inventor: TATEISHI KOZO
IPC: H01J29/58
Filed: 1992-06-23
Abstract: A display apparatus in which the focus shift and astigmatism of the electron beam caused in the CRT and its vicinity portion are reduced.  Picture scenes of higher fidelity, higher acuteness and higher resolution can be obtained.  In the electron beam shaped control circuit, signals corresponding to a high-pass component, a brightness component in the image signals from the horizontal direction electron beam shaped detection deciding portion, and signals corresponding to the low-pass component in the image signals from the vertical direction electron beam shaped detection deciding portion are composed.  Composite signals of parabolic waves are obtained by a driving voltage generating portion so as to apply the output to the auxiliary acceleration focusing electrode of the CRT.
Patent CA-2072360-A1 (CA)
Title: Prodrug anhydride compositions
Inventor: DOMB ABRAHAM J
IPC: A61K47/48
Filed: 1990-12-26
Abstract: Prodrug anhydrides of drugs having carboxylic acid moieties, and various carboxylic acid group containing carriers are described, which have improved longevity, increased absorption and are less irritating than the carboxylic acid containing drugs per se.
Patent CA-2073723-A1 (CA)
Title: Catalyst for the polymerization of olefins
Inventor: LUCIANI LUCIANO
IPC: C08F4/60
Filed: 1992-07-13
Abstract: CATALYST FOR THE POLYMERIZATION OF OLEFINS.            ABSTRACT            A supported solid component of catalyst, for the stereospecific polymerization of propylene and other .alpha.-olefins, is obtained by making a non-activated silica interact in succession with: (i) a  magnesium  dialkyl  or halide of magnesium  alkyl;  (ii)  a halogenating agent selected from silicon,  tin and antimony halides; (iii) a titanium tetrahalide; and (iv) a Lewis base. A catalyst for the stereospecific polymerization of propylene and other .alpha.-olefins is composed of:  ( A)  the solid component of catalyst; (B) an aluminium trialkyl or aluminium alkyl halide; and (C) an electron donor compound, capable of forming a complex compound with component (B).
Patent CA-2074985-A1 (CA)
Inventor: SASAKI GORO
IPC: H04B10/69
Filed: 1992-07-30
Abstract: There is disclosed on optoelectronic integrated circuit comprising, a plurality of channels each including an optical receiving device for converting a received optical signal to an electric signal, and an amplifier for amplifying an output signal of the optical receiving device, the channels being integrated on the same semiconductor substrate, electric power source nodes of at least two of the amplifiers of the respective channels being connected to a common electric power source node, and the common electric power source node being connected through a resistor element to an electric source power supply terminal for supplying an electric source power to the channels.
Patent CA-2075267-A1 (CA)
Title: Portable arthroscope with periscope optics
Inventor: LAFFERTY MICHAEL
IPC: A61B1/317
Filed: 1992-08-04
Abstract: ABSTRACT OF THE INVENTION A disposable arthroscope for examining the interior of a joint and for carrying out diagnostic and therapeutic procedures within the joint includes an elongated needle and a cap housing which has a base plate.  The proximal end of the needle is mounted on the cap opposite the base plate, and the distal end of the needle extends outwardly from the cap.  The needle is a hollow tube which surrounds an image guide and a bundle of illuminating fibers that extend through the tube.  A lens is attached to the distal end of the image guide and is slightly angled relative to the longitudinal axis of the needle.  The proximal ends of both the image guide and the bundle of illuminating fibers extend from the proximal end of the tube and through the cap for exposure at the surface of the base plate.   The base plate of the disposable arthroscope is engageable with a camera and with a light source to position the camera in light communication with the image guide, and to position the light source in light communication with the bundle. With  these  engagements,  the  combination  of  disposable arthroscope,  light source and camera generate a visual display of an object that is illuminated by the light source through the bundle of illuminating fibers.
Patent CA-2075443-A1 (CA)
Inventor: RAWSON ERIC G
IPC: B41J2/015
Filed: 1992-08-06
Abstract: A printhead for an acoustic ink printer has a piezoelectric transducer on one surface of a substrate. A layer of a dielectric material is provided on the surface of the transducer away from the substrate. A Fresnel lens is formed in the surface of the dielectric layer away from the the transducer, for focusing sound energy near the surface of a body of ink adjacent the dielectric layer. A pit may be formed in the substrate under the transducer. The transducer may be a body of piezoelectric material sandwiched between a pair of electrodes, the lower electrode of which has a thickness that is a quarter wave at the excitation frequency of the transducer. An anti-reflective coating may be provided on the lower surface of the substrate, with a body of an absorptive material abutting the anti-reflective layer, or an absorptive material having an acoustic impedance approximately matching that of the substrate coated on the lower surface of the substrate.
Patent CA-2076323-A1 (CA)
Inventor: HIRAHARA MINORU
IPC: H04M3/02
Filed: 1992-08-18
Abstract: A call signal generating circuit includes a step-up transformer having a primary winding and secondary windings, a first switching circuit coupled between the primary winding of the step-up transformer and a D.C. power source for turning ON/OFF at a frequency higher than a frequency of a call signal which is to be generated by the call signal generating circuit, a rectifying circuit coupled to the secondary windings of the step-up transformer for rectifying voltages induced at the secondary windings into a positive polarity voltage and a negative polarity voltage, a second switching circuit coupled to the rectifying circuit for alternatively outputting the positive polarity voltage and the negative polarity voltage with a quiescent time in which both the positive and negative polarity voltages are not output, a capacitor coupled to the second switching circuit for receiving the positive and negative polarity voltages output from the second switching circuit, a resistor coupled to the capacitor, a third switching circuit for discharging the capacitor during the quiescent time, where the resistor and the third switching circuit are coupled in series to form a series circuit which is coupled in parallel to the capacitor, and a pair of output terminals coupled to the capacitor for outputting the call signal.
Patent CA-2078505-A1 (CA)
Title: Benzanilide derivatives
Inventor: OXFORD ALEXANDER W
IPC: C07D249/08
Filed: 1992-09-17
Abstract: ABSTRACT                  BENZANILIDE DERIVATIVES            The invention provides compounds of the general formula (I) :-                (I) or a physiologically acceptable salt or solvate thereof wherein R1 represents a hydrogen atom or a halogen atom or a group selected from C1-6alkyl and C1-6alkoxy; R2 represents a phenyl group substituted by a group selected from   ,   ,   ,   ,    and      , and optionally further substituted by one or two substituents selected from halogen atoms, C1-6alkoxy, hydroxy, and C1-6alkyl; R3 represents the group                 ;          R4 and R5, which may be the same or different, each independently represent a hydrogen atom or a halogen atom or a group selected from hydroxy, C1-6alkoxy and C1-6alkyl; R6 represents a hydrogen atom or a group selected from -NR9R10 and a C1-6alkyl group optionally substituted by one or two substituents selected from C1-6alkoxy, hydroxy, C1-6acyloxy and -SO2R11; R7, R8 and R9, which may be the same or different, each independently represent a hydrogen atom or a C1-6alkyl group; R10 represents a hydrogen atom or a group selected from C1-6alkyl, C1-6acyl, benzoyl and -SO2R11;            R11 represents a C1-6alkyl group or a phenyl group; Z represents an oxygen atom or a group selected from NR8 and S(O)k; and k represents zero, 1 or 2.     The compounds may be used in the treatment or prophylaxis of depression and other CNS disorders.
Patent CA-2079792-A1 (CA)
Title: Mutagenesis testing using transgenic non-human animals carrying test dna sequences
Inventor: SHORT JAY M
IPC: G01N33/50
Filed: 1991-04-05
Abstract: An assay for monitoring and assessing the mutagenic potential of agents which involves creating transgenic non-human animals carrying a test DNA sequence or sequences that can be quickly recovered and examined for mutations following exposure to one or more suspected mutagenic agents.
Patent CA-2080190-A1 (CA)
IPC: B65G51/02
Filed: 1992-10-08
Abstract: This invention is intended to provide a continuous parts feeder capable of continuously feeding parts to a metal mold installed in a pressure machine such as a press.     An actual example of this invention consists of a parts transport pipe (40) that uses compressed air to feed parts, magazines (42, 44) that feed parts sequentially to this parts transfer pipe (40) with compressed air, and a coupling device (46) that can selectively switch the entrance of the parts transport pipe(40) between the outlets of at least two magazines (42, 44). It will also be equipped with an auxiliary compressed air supply device (57) that supplies auxiliary compressed air to the inside of the parts transport pipe according to information from the parts detector (56) which determines whether there are or are not parts inside the parts transport pipe (40), so that the transport of parts inside the parts transport pipe is performed smoothly. The coupling device (46) is automatically controlled by the automatic control device (48).
Patent CA-2080658-A1 (CA)
Inventor: THORNE LINDA P
IPC: C12R1/645
Filed: 1992-10-15
Abstract: A method for obtaining a substantially biologically pure culture strain of Aureobasidium pullulans from a wild type strain by enriching the collected strain for organisms which grow as fungal yeastlike cells, growing colonies from isolated yeastlike cells and selecting those yeastlike cells which exhibit reduced pigmentation.  Biologically pure culture strains obtained by the invention as well as methods for producing pullulan having decreased pigmentation and/or increased molecular weight are disclosed.
Patent CA-2080753-A1 (CA)
Inventor: ISABELLE PAUL
IPC: E01C19/20
Filed: 1992-10-16
Abstract: La divulgation décrit un appareil adapté pour être monté sur le châssis d'un camion et destiné à l'épandage d'abrasifs et de déglaçants pour l'entretien routier;  il comprend une trémie ayant,  en sa partie inférieure centrale, une auge longitudinale et une coiffe qui s'étend au-dessus de l'auge.  Un convoyeur disposé au bas de la trémie comporte une course supérieure sous la coiffe et une course inférieure située dans l'auge de telle manière que les abrasifs et déglaçants qui se déplacent  de  la  trémie  sont  reçus  sur  la  partie inférieure du convoyeur et amenés vers l'avant de la trémie où d'autres composantes sont prévues pour faire l'épandage au sol.
Patent CA-2081399-A1 (CA)
Title: Method and apparatus for die-cutting signatures in saddle format
Inventor: WAGNER JOERG
IPC: B26D3/10
Filed: 1992-10-26
Abstract: ABSTRACT      A method and apparatus of  in-line die-cutting in saddle signature gathering wherein signature sets are gathered on a gathering chain to form signature sets.   The signature set is grasped by a pair of belts which lift the signature off the gathering line so that a portion of the signature set along the spine thereof may be removed by a die-cutting pair of plates located above the gathering line.   The signature sets may be stopped as lifting and cutting occurs.  After lifting and cutting the signature set is replaced on the gathering line for further processing.
Patent CA-2082062-A1 (CA)
Inventor: BECK WARREN R
IPC: B32B7/02
Filed: 1991-04-11
Abstract: Signs comprising an outer layer (12) having indicia thereon and a thermal reservoir (16) behind the outer layer. The thermal reservoir (16) contains at least one phase change material that, during periods of falling ambient temperature, yields a latent heat of transition thereby tending to maintain the temperature of the outer layer above what it otherwise would have been. As a result of such higher temperatre, the outer layer of the sign is more resistant to formation of dew or frost thereon and retains a greater degree of legibility.
Patent CA-2084157-A1 (CA)
Title: Arm support and mouse pad
Inventor: KRANZDORF SORIN
IPC: B41J29/00
Filed: 1992-11-30
Abstract: Arm Support and Mouse Pad Invention Abstract The usual mouse technique is for the user to slide it along a desk surface, either by holding his or her arm above the desk or by sliding his or her arm along the desk to move the mouse. The Arm Support and Mouse Pad Invention is designed to give the user's arm full support at all times, no matter what direction the mouse is being moved in or what part of the mouse pad it is being moved to.
Patent CA-2086214-A1 (CA)
Inventor: WRIGHT ROBERT W
IPC: B21G3/24
Filed: 1992-12-23
Abstract: Nails  having  radially  offset,   circular  heads   are manufactured from a malleable wire.  The wire is clamped so that a leading portion extends axially from a clamping mechanism.  The extending portion is bent at an acute angle relative to a clamping axis.   The extending portion is cut so as to form a pointed end thereon and so as to leave a bent stub extending at such an angle.  Such a nail head is formed from the stub, which is pressed by a punch into a cavity defined by the clamping mechanism, and which is deformed when pressed thereinto.   The cavity has a fully circular, offset margin.  The punch has a face covering the cavity.   Once released, the wire is fed axially until a leading portion extends as before.  These operations are repeated to form a similar nail in each repetition.   A novel apparatus for carrying out these operations is disclosed.
Patent CA-2086652-A1 (CA)
Title: Liquid, light-colored poylisocyanate mixtures and a process for their production
Inventor: GEBAUER HERBERT
IPC: C08G18/80
Filed: 1993-01-04
Abstract: An isocyanate terminated prepolymer based upon diphenylmethane isocyanates. This prepolymer is the reaction product of a diphenylmethane isocyanate mixture having from about 75 to about 95 wt% binuclear isomers and from about 5 to about 25 wt% polymeric isocyanate with a polyether polyol. The binuclear isomer content is generally from about 15 to about 40 wt% 2,4'-isomer and from about 2 to about 10 wt% 2,2'-isomer.      The polyether polyol has a functionality of from about 3 to about 8, an OH number of from about 350 to about 1000 mg KOH/g and a molecular weight of from about 150 to about 1000. These prepolymers are particularly useful as starting materials for the production of light-colored, dimensionally stable rigid polyurethane foams.
Patent CA-2088114-A1 (CA)
Title: Catalyst and process for the polymerization and copolymerization of olefins
Inventor: WINTER ANDREAS
IPC: C08F10/00
Filed: 1993-01-26
Abstract: Abstract of the disclosure Catalyst and process for the polymerization and copoly-merization of olefins A highly effective catalyst system for the polymerization or copolymerization of olefins comprises at least one metallocene as transition-metal compound and at least one aluminum compound of the formula II                          (II) and/or of the formula (III)                      (III) where, in the formulae (II) and (III), the radicals R14 may be identical or different and are an alkyl group, an aryl group, benzyl or hydrogen, and p is an integer from 2  to 50,  and at  least one  aluminum compound of the formula IV       (IV) where R15, R16 and R17 are identical or different and are a hydrogen atom, an alkyl group, an alkylsilyl group, an alkoxy group, an aryl group, an aryloxy group, an alkenyl group, an arylalkyl group, an alkylaryl group, an aryl-alkenyl group, a halogen atom or a radical of the formula -OSiR15R16R17 where R15, R16 and R17 are as defined in the description.
Patent CA-2088252-A1 (CA)
Inventor: RILLY GERARD
IPC: H02M3/335
Filed: 1991-08-01
Abstract: In known line-powered, phase control circuits, the middle point (b) of a serial connection between an inductance (1a) and a switch (T1) connected to the output (a) of the power line rectifier (BG) is connected by an inductance (D1) to a charging capacitor (Cb). The object of the invention is to reduce in such circuits the amplitude of the harmonic waves drawn from the power line. For that purpose; a second diode (D2) is arranged between the middle point (b) and the switch (T1), and the switch (T1) is connected by the primary winding (Lp) of a combinatorial circuit transformer (Tr) to the charging capacitor (Cb). The invention is particularly useful for television receivers or video-recorders.
Patent CA-2088304-A1 (CA)
Inventor: CRADDOCK ROY E III
IPC: C08F2/34
Filed: 1993-01-28
Abstract: A method of terminating, under emergency conditions, an olefin polymerization reaction conducted in the presence of a transitioned metal based catalyst in a gas phase reactor by using 8 recycle gas from the reactor or a feed stream to the reactor to operate an expander associated with a circulator which maintains fluidized conditions in the reactor while introducing a kill gas into the reactor to terminate the reaction.
Patent CA-2088878-A1 (CA)
Title: Cdnas encoding the gastrin and cck-b receptors
Inventor: KOPIN ALAN S
IPC: A61P25/28
Filed: 1993-02-05
Abstract: cDNAs ENCODING THE GASTRIN AND CCK-B RECEPTORS                   Abstract of the Disclosure The invention features purified nucleic acids encoding the mammalian gastrin/CCK-B receptor family.  The invention also features a) the gastrin and CCK-B receptor polypeptides, b) a method of identifying antagonists to the gastrin or CCK-B receptors,  and c) a parietal cell cDNA expression library.
Patent CA-2089118-A1 (CA)
Title: General buffer for restriction endonucleases
Inventor: DEY MARGARET S
IPC: C12N9/22
Filed: 1993-02-09
Abstract: ABSTRACT     Restriction endonuclease buffer compositions which are suitable for use with essentially all restriction endonucleases.  The compositions comprise Tris-HCl, MgCl2, and at least one of KCl, beta-mercaptoethanol and deoxyribonucleoside triphosphate.  The buffer compositions provide efficient restriction of DNA using a wide variety of restriction endonucleases, regardless of the specific buffer requirements of the restriction endonuclease when using conventional restriction buffers.
Patent CA-2091186-A1 (CA)
Title: Fluidized bed ring-opening polymerization
Inventor: BELLIS HAROLD E
IPC: C08G63/08
Filed: 1991-09-09
Abstract: An improved process for the ring-opening polymerization of ring-opening polymerizable cyclic compounds using a fluidized bed.
Patent CA-2091833-A1 (CA)
Inventor: LABOUREAU JACQUES-PHILIPPE
IPC: A61F2/00
Filed: 1993-03-17
Abstract: The present invention concerns an artificial ligament for replacing a natural articular ligament, the artificial ligament being formed by rolling or folding up a machine width (1) comprising two intra-osseous parts (2, 5) arranged on each side of at least one central intra-articular part (3, 4), characterized in that the said intra-articular part (3, 4) is formed by technical fibres which are adjacent, but not connected to each other, and in that the said intra-osseous parts (2, 5) are formed by a warp knit fabric of technical fibres with the aid of weft filaments which, when tightened, prevent any relative movement of the said technical fibres in relation to the meshes. <IMAGE>
Patent CA-2092747-A1 (CA)
Title: Hot-dip coated roofing material
Inventor: CAREY JAY F II
IPC: C25D5/36
Filed: 1993-03-26
Abstract: Various metal coatings have been used for many years to inhibit oxidation of metals exposed to the natural elements of the atmosphere over a period of time. Terne alloy coatings which normally contain about 20% tin and about 80% lead are some of the most popular metal coating treatments to resist corrosion.      The special formulation of the present invention reformulates the terne coating to constitute a tin and lead based coating where tin constitutes at least 90% of the terne and lead amounts to less than 0.1% and preferably less than 0.05% of the terne. The low lead terne coating may also include antimony arid bismuth to provide strength and hardness to the low lead terne formulation having corrosion resistive qualities similar to that of standard terne coating formulations.      A weather-resistant strip roofing material is also disclosed and which has improved corrosion-resistant properties includes a strip of stainless steel which is pre-treated by an aggressive pickling process and/or a chemical activating process prior to applying a hot-dip tin coating. The pre-treatment of the stainless steel strip produces superior alloying between the stainless steel and the tin coating which reduces flaking of the tin coating.