baber/WOPTO huggingface dataset:
Patent CA-1302384-C (CA)
Title: Hafnium metallocene catalyst for the polymerization of olefins
Inventor: EWEN JOHN A
IPC: C08F10/00
Filed: 1987-09-25
Granted: 1992-06-02
Abstract: HAFNIUM METALLOCENE CATALYST FOR THE      POLYMERIZATION OF OLEFINS            ABSTRACT     The, present invention provides a catalyst system for the polymerization and copolymerization of olefins with the system comprising a chiral, stereorigid hafnium metallocene catalyst in combination with an aluminum compound.  The aluminum compound is preferably an alumoxane and may be a mixture of alumoxane and trimethyl aluminum.  It was discovered that this mixture causes a transformation of the catalyst over time.  The catalyst system may also include a solvent to increase the solubility of the metallocene catalyst.  It was discovered that these catalyst systems produce useful polymer products with molecular weights greater than 10,000.
Patent CA-1293109-C (CA)
Inventor: KRZESICKI RICHARD M
IPC: F16L23/10
Filed: 1988-01-12
Granted: 1991-12-17
Abstract: ABSTRACT OF THE DISCLOSURE             A circumferentially contractible clamp operated by a bolt and nut actuator wherein a U-shaped safety saddle pivotally mounted upon a first end of a clamp band includes a threaded bore receiving a threaded stem of the nut threaded upon the bolt.  The inner end of the stem is operatively associated with a second band end wherein rotation of the nut tensions the bolt and the interconnection of the nut stem and the saddle supports the nut such that the stem will maintain the band in a contracted condition even if the bolt fails.
Patent CA-1317572-C (CA)
Inventor: PERRIN ALAIN-DOMINIQUE
IPC: A45D34/00
Filed: 1988-01-15
Granted: 1993-05-11
Abstract: The refill (6) is held by two half-shells (1, 3), joining in a substantially median plane, a base (2) being integral with the lower part of the first half-shell (1), the second half-shell (3) comprising a means (4) securing it to the base (2) or to the first half-shell (1), whilst still enabling it to tilt around the refill in order to close up against the first half-shell (1), a means (3b, 15) making it possible to secure the two half-shells (1, 3) close to the neck of the refill (6) in the upper part of the bottle. 
<IMAGE>
Patent CA-1295159-C (CA)
Title: Bolt release trigger safety mechanism for firearms
Inventor: FORBES MELVIN D
IPC: F41A17/00
Filed: 1988-03-10
Granted: 1992-02-04
Abstract: BOLT RELEASE TRIGGER SAFETY MECHANISM FOR FIREARMS                 ABSTRACT OF THE DISCLOSURE       This invention is an integrated three-position or three-stage safety mechanism for firearms that allows the release of a locked breech bolt mechanism while a Safety Lever is in the "Safe" (position No. 1) or no fire position, when the trigger and/or the sear mechanism is locked.  While in Position No. 1, the safety mechanism allows the firearms' handler or user the ability to depress the Safety Lever (Position No. 2) to release, lift, rotate, open, and/or remove the bolt assembly as desired.  The design of the safety mechanism prohibits the operator from inadvertently moving the Safety Lever to the OFF or "Fire" position (Position No. 3), while depressing the Safety Lever (Position No. 2) to release the bolt assembly.  This allows removal of the "live" or empty cartridges while the Safety Lever is locked and blocked in the "Safe" or OFF position, thus significantly enhancing the safety of this operation.       This invention is an adaptable enhancement to firearms that use the older or recent two-stage top or side safety trigger blockage or sear blockage safety devices, thus enhancing the safety and handling features on a wide variety of firearms.  The adaptation of this invention as an enhanced safety replacement device is a simple task for a qualified gunsmith or one skilled in the art of firearm repairs.
Patent CA-1314802-C (CA)
Title: Non-inflammable light-weighing tough board
Inventor: UENO KEISUKE
IPC: B31D3/00
Filed: 1988-03-10
Granted: 1993-03-23
Abstract: Abstract of the Disclosure Non-inflammable light-weighing tough boards to be used for structural and decorative material in housing and building, such as, decorative ceiling boards, sliding door overlays, partitions and so on, prepared by corrugating cardboard made of phosphated wood pulp and inorganic fiber and processing the so obtained corrugated board by impregnating with a toughening solution of inorganic toughening agent and then drying it.
Patent CA-1278349-C (CA)
Title: Fault tolerant logical circuitry
Inventor: MALEY GERALD A
IPC: H03K19/003
Filed: 1988-03-11
Granted: 1990-12-27
Abstract: FAULT TOLERANT LOGICAL CIRCUITRY                       Abstract A fault tolerant logic circuit capable of absorbing many D.C. and A.C. defects.  The logic circuit employs a number of redundant logic gate circuits.  The gate circuits are arranged in at least first and second interconnected signal paths.  The logic gate circuits have two independent outputs.  The two independent outputs are each connected to an input in a discrete one of the first and second interconnected signal paths.
Patent CA-1311415-C (CA)
Title: Lipid vesicles formed of surfactants and steroids
Inventor: WALLACH DONALD F H
IPC: A61K/
Filed: 1988-03-11
Granted: 1992-12-15
Abstract: ABSTRACT OF THE INVENTION          Disclosed is a method of making lipid vesicles of a steroid and surfactants which do not form vesicles in the absence of the steroid.  The surfactants are polyoxyethylene derivatives of 16-20 carbon ethers and amines.
Patent CA-1330672-C (CA)
Inventor: SCHWEIGHOFER WERNER
IPC: B01J47/00
Filed: 1988-03-31
Granted: 1994-07-12
Abstract: ABSTRACT OF THE DISCLOSURE         A method for varying the capacity for a specific chemical element of an ion exchanger used for cleaning a liquid from a loop includes varying the chemical status of the element in the liquid to be cleaned immediately upstream of the ion exchanger by adding given substances.  The given substances added are removed immediately downstream of the ion exchanger.  The chemical element may be antimony, the loop may be the primary loop of a pressurized water reactor plant and the liquid may be primary coolant.
Patent CA-1297344-C (CA)
Title: Vehicle for bulk transport of powder-form, granular or pellet-like material
Inventor: WELLINK THEODORUS A
IPC: B65D90/62
Filed: 1988-04-13
Granted: 1992-03-17
Abstract: ABSTRACT            Vehicle for bulk transport of powder-form, granular or pellet-like material The invention relates to a vehicle for transport of material. To allow for the pellet-like material, such as cattle feed, to be unloaded without disturbance, the height adjustable closing member of the discharge funnel is provided with a cutting edge for destruction of pellet-like material.
Patent CA-1307470-C (CA)
Title: Hydrostatic steering mechanism
Inventor: PEDERSEN HARRY E
IPC: B62D5/07
Filed: 1988-06-30
Granted: 1992-09-15
Abstract: Abstract A hydrostatic steering mechanism comprises a control device (1) and a throttle valve (4), particularly a priority valve, in the pump conduit (5). A pressure chamber of this throttle valve (4) is connected to an inlet pressure conduit (29) and the oppositely acting pressure chamber is connected to a conduit (30) which is under load pressure. The inlet pressure conduit (29)  comprises a  throttling position  (31).  At  the side of  the  throttling position remote  from the pump conduit,  the inlet pressure conduit (29) is connected to the motor conduit on the supply side by way of a bridging conduit (33)  comprising a pressure reduction valve (32). In this way, one avoids the steering difficulties during over-run operation.
Patent CA-1288458-C (CA)
Title: Suspension structure for a tracked vehicle
Inventor: GEE JAMES E
IPC: B62D55/30
Filed: 1988-08-18
Granted: 1991-09-03
Abstract: Abstract Suspension Structure for a Tracked Vehicle A vehicle such as a combine harvester or the like includes a main frame and first and second undercarriages for supporting the main frame and individually having front and rear wheel assemblies and a track encircling the wheel assemblies.  A suspension structure therefore includes a laterally spaced apart pair of pivot joints adjacent the front wheel assemblies for pivotally connecting the undercarriages to the main frame, and a coupling assembly adjacent the rear wheel assemblies for centrally supporting the main frame on the undercarriages.  A hydraulic motor powerably rotates each of the rear wheel assemblies  and an inside support device is provided therefor that includes a stabilizing beam.  The coupling assembly includes an equalizer bar having outer ends, and the stabilizing beam extends rearwardly beyond the driven rear wheel assemblies for connection to the outer ends.  Also, an outside support device releasably clamps the rear wheel assemblies to the undercarriages.
Patent CA-1305699-C (CA)
Title: 17-substituted androsta-1,4-dien-3-one derivatives
Inventor: DI SALLE ENRICO
IPC: C07J1/00
Filed: 1988-09-09
Granted: 1992-07-28
Abstract: A B S T R A C T     The invention relates to new 17-hydroxy androsta-1,4--diene-3-one derivatives of the following formula   (I) wherein each of R and R3, independently, is hydrogen or C1-C6 alkyl; R1 is hydrogen, halogen or C1-C6 alkyl; R2 is hydrogen  or C1-C6 alkyl; R4 is hydrogen or fluorine; R5 is a) hydrogen or C1-C6 a1ky1; b) phenyl unsubstituted or substituted by one or two substituents independently chosen from C1-C6 alkyl, halogen and amino; c) an acyl group; or d) a hydroxy protecting group; and  the pharmaceutically acceptable salt thereof, which are useful in therapy, in particular as anti-cancer agents.
Patent CA-1311340-C (CA)
Title: Preheating and dosing apparatus
Inventor: ZAHRADNIK RUDOLF
IPC: B29C48/515
Filed: 1988-10-06
Granted: 1992-12-15
Abstract: ABSTRACT An apparatus for preheating and dosing plastic which is to be fed to an extruder consists of a housing 3 with a heatable casing and a double worm screw (1,2) mounted at both ends in the housing 3 and turning oppositely.  The two worm screws (1,2) of the double worm screw are hollow, such that the hollow cavity (8) serves to accept a heating medium, for example hot water, for the purpose of heating the worm screws (1,2).  The apparatus allows the working material to be uniformly heated, and precisely metered to the extruder. (Fig. 2).
Patent CA-1337310-C (CA)
Title: Tetrahalophthalate esters as flame retardants for certain resins
Inventor: BOHEN JOSEPH MICHAEL
IPC: C08L25/04
Filed: 1988-10-31
Granted: 1995-10-10
Abstract: Flame retardant plastic resin compositions with improved flow characteristics containing a tetrahalo-phthalate ester; the use of the tetrahalophthalate ester as a flame retardant processing aid in a resin; a method for imparting flame retardant and improved flow characteristics to a resin; and a method for manufacturing a flame retardant resin with improved flow characteristics; wherein the resin is selected from among (A) Acrylonitrile-Butadiene-Styrene, (B) Polystyrene, (C) Polycarbonate, (D) Polybutylene Terephthalate, and (E) Styrene-Maleic Anhydride Copolymer.
Patent CA-1314045-C (CA)
Title: 6' carbamate esters of zearalanol and its derivatives
Inventor: HODGE EDWARD B
IPC: C07D313/00
Filed: 1989-01-19
Granted: 1993-03-02
Abstract: ABSTRACT 6' Carbamate esters of zearalanol and its derivatives are used to promote growth in ruminants.  The compounds have the structural formula:       wherein R1 and R2, which may be the same or different, are H, X, or COX, where X is an alkyl group having from 1-6 carbon atoms; and R is NH-Y, where Y is an alkyl group hav-ing from 1-6 carbon atoms a five-membered or six-membered ring; N(CnH2n+1)2, where n is an integer from 1 to 6; or a five-membered or six-membered heterocyclic ring having one N heteroatom and up to one other heteroatom selected from the group consisting on N, S, and O heteroatoms.
Patent CA-1333608-C (CA)
Title: Hydrogenation of halonitroaromatic compounds
Inventor: LENTZ CARL M
IPC: C07D231/00
Filed: 1989-02-01
Granted: 1994-12-20
Abstract: Disclosed is an improved process for the preparation of haloaromatic amines by the catalytic hydrogenation of halonitroaromatic compounds in the presence of a chromium-containing Raney cobalt catalyst.  The catalyst gives good hydrogenation rates while minimizing formation of dehalogenated by-products.
Patent CA-1339988-C (CA)
Inventor: IYER S RAJA
IPC: B22C1/22
Filed: 1989-02-14
Granted: 1998-08-11
Abstract: The present invention provides a binder solution having a low  solids  level  which  provides  improved  tensile properties  when  used  with  reclaimed  sand.    This  binder solution comprises an alkaline phenolic resin which is cured at ambient temperature with an ester-functional curing agent. Also provided by this invention are raw batch formulations comprising sand, a binder solution having a low solids level, and a curing agent.   These raw batch formulations include embodiments wherein the low solids levels are obtained by the separate addition of a solvent.   The methods for producing foundry molds and cores of this  invention included those procedures  wherein  dilution water  is  used  to  reduce  the solids  contents  of  conventional,  relatively  high  solids content binder solutions.
Patent CA-1301897-C (CA)
Title: Method for producing an opto-electronic integrated circuit
Inventor: SASAKI GORO
IPC: H01L27/144
Filed: 1989-02-22
Granted: 1992-05-26
Abstract: Abstract of the Disclosure Present invention is to provide a process for producing an opto-electronic integrated circuit comprising a field effect transistor as an electronic device and a photo-diode as an optical device both formed on an InP substrate, the field effect transistor comprising a high electron mobility transistor having: a GaInAs layer epitaxially grown on the InP substrate in a preset region thereof, a n-AlInAs layer epitaxially grown on the GaInAs layer, a gate electrode formed on the AlInAs layer, and a source electrode and a drain electrode formed on the AlInAs layer with the gate electrode therebetween, and the photo-diode comprising a PIN photo-diode having: the GaInAs layer epitaxially grown on the InP substrate near the region of the field effect transistor simultaneously with the growth of that of the field effect transistor, the n-AlInAs layer epitaxially grown on the GaInAs layer simultaneously with the growth of that of the field effect transistor, a n-InP layer epitaxially grown on the n-AlInAs layer, an undoped GaInAs layer epitaxially grown on the n-InP layer in a preset region thereof, a p-GaInAs layer epitaxially grown on the undoped GaInAs layer, an anode electrode formed on the p-GaInAs layer, and a cathode electrode formed on the n-InP layer near the undoped GaInAs layer.
Patent CA-1331191-C (CA)
Title: Therapeutically useful tetralin derivatives
Inventor: ANDERSSON BENGT R
IPC: C07D333/20
Filed: 1989-03-10
Granted: 1994-08-02
Abstract: ABSTRACT          This invention is therapeutically useful tetralins and pharmaceuticallyacceptable acid addition salts thereof of the formula   wherein YR1 is OR1 at the 8 position where R1 is -CH2-(C3-8 cycloalkyl);          R2 is hydrogen or C1-3 alkyl;          R3 is -CH2-(C3-8 cycloalkyl); R4  is  hydrogen,  C1-8  alkyl,  -CH2-(C3-4  cycloalkyl),  -(CH2)m-R5  or -CH2-CH2-X-(CH2)nCH3, n is zero to 3 and m is 2 or 3; X is oxygen or sulfur; R5 is phenyl, C1-3 alkoxy, C1-3 alkyl, 2-thiophene, 3-thiophene, or phenyl substituted with one or two substituent groups selected from chlorine, bromine or fluorine; and with the proviso that when R3 contains more than four carbon atoms and R4 is alkyl, said alkyl contains from 1 to 3 carbon atoms. Alternatively, -YR1 is -S-(C1-3 alkyl) at the 5, 6, 7 or 8 position of the aromatic ring or OR1 at the 8 position where R1 is selected from the group consisting of C1-8 alkyl, C2-8 alkenyl, -CH2-(C3-8 cycloalkyl) or benzyl;          R2 is hydrogen or (C1-C3) alkyl;          R3 is -CH2-(C3-C8) cycloalkyl;          R4 is -(CH2)m-(2-thiophenyl or 3-thiophenyl); and m is 2 or 3.
Patent CA-1321148-C (CA)
Title: Spirally wrapped reverse osmosis membrane cell
Inventor: SCHNEIDER BURNETT M
IPC: B01D63/10
Filed: 1989-03-22
Granted: 1993-08-10
Abstract: ABSTRACT A spirally-wrapped reverse osmosis membrane cell employing an envelope of semipermeable membrane sheets spirally wound or wrapped about a tubular mandrel.  The convolutions of the membrane assembly are separated to form an open channel, directed feed flow path leading into a lateral opening or series of openings in a communicating tubular member defining an unobstructed bore throughout its length.  The feed separator may comprise a pluarlity of substantially parallel strips of impermeable material of a thickness sufficient to provide desired separation between membrane sheets and wherein the strips define a meandering fluid flow path throughout the length and width of the membrane sheet.
Patent CA-1311102-C (CA)
Title: Grain storage unloading system
Inventor: SCHILTZ BOYD D
IPC: B65G65/46
Filed: 1989-04-21
Granted: 1992-12-08
Abstract: ABSTRACT OF THE DISCLOSURE          A grain storage unloading system  (10)  with a series of augers for unloading grain (42) from a storage bin (11) is disclosed.  Also disclosed is a method for unloading grain (42)  from a  storage  bin  (11).    The  system  includes  a horizontal discharge auger conveyer (20) disposed above the bin's floor, the outlet end (25) of the horizontal auger conveyer (20) communicating with a point outside the grain bin  (11).   The  inlet  end  (24)  of  the horizontal  auger conveyer  is  interconnected  to a vertical  auger  conveyer (13).   The present invention also includes a sweep auger (32),  the length of  the sweep auger  (32)  extending  the radius  of  the  grain  bin,  which  transports  grain  (42) radially toward a central part of the bin (11).
Patent CA-1315364-C (CA)
Title: Modulating arrangement for phase and amplitude modulation of a wave
Inventor: DAULASIM KHAMPHUC
IPC: H04L27/34
Filed: 1989-07-19
Granted: 1993-03-30
Abstract: PHF 88.577                                               5 July 1989 ABSTRACT: Modulating arrangement for phase and amplitude modulation of a wave.          This arrangement comprises an input (1) for receiving groups of bits, a phase shifting circuit (5, 7) for producing two phase-shifted components of the said wave and a modulating circuit for modulating the amplitude of the two components as a function of the said groups, which is characterized in that the modulating circuit comprises storage means (25) addressed by part of the bits of the bit groups for producing an original amplitude value, and calculating means (30) for obtaining the final amplitude values by changing the original values according to the remaining part of the bits of the bit groups.
Patent CA-1317528-C (CA)
Title: Hydraulic implement regeneration system
Inventor: DUNN DONNELL L
IPC: E02F9/22
Filed: 1989-09-11
Granted: 1993-05-11
Abstract: 039.340                ABSTRACT OF THE DISCLOSURE   A hydraulic system for use in moving a bucket on an earth-working machine that includes a hydraulic cylinder and power piston with the piston being operably connected to the bucket. A change-over valve connects a source of pressure fluid and the reservoir to the opposite axial sides of the piston to move the piston in a selected direction and pivot the bucket either clockwise or counterclockwise. When the bucket is being moved in its clockwise position to dump the bucket, gravity assists its movement, and the bucket begins to actually move the power piston. When this happens, the piston may move so quickly that the hydraulic pump cannot supply adequate hydraulic fluid to the chamber in the cylinder. To supplement the hydraulic pump and ensure that the hydraulic chamber has sufficient fluid in it, a regeneration valve is disposed in a line returning fluid to the reservoir. When the change-over valve is in a position that will cause the bucket to be dumped, the regeneration valve is biased to a position that will restrict flow back to the reservoir and will cause a portion of the fluid being returned to the reservoir to be bypassed back into the line leading to the cylinder chamber that is powering the movement of the piston and bucket. By doing this, the regeneration valve supplements the hydraulic pump and will ensure that there is always sufficient fluid within the cylinder chamber.
Patent CA-1331568-C (CA)
Title: Pharmaceutical composition containing dihydropyridine-dianhydrohexitol and nitro derivative
Inventor: STOSS PETER
IPC: A61K31/44
Filed: 1989-09-18
Granted: 1994-08-23
Abstract: ACYL DERIVATIVES OF DIANHYDROHEXITOLS        Abstract The present invention relates to new pharmaceuticals consisting of a compound of the general formula I                                  (I) in which R1 and R2 have the meanings stated in the description, and of isosorbide 5-mononitrate or isosorbide 2-mononitrate or glycerol trinitrate or glycerol 1-mononitrate or glycerol 2-mononitrate, which can be used to control cardiovascular diseases, especially for the prophylaxis and therapy of angina pectoris and myocardial infarct.
Patent CA-1335641-C (CA)
Inventor: RAWLINGS DAVID E
IPC: F02P7/067
Filed: 1989-09-20
Granted: 1995-05-23
Abstract: Disclosed herein is an apparatus for positioning a sensor in an operative location relative to a timing ring and including a moveable base member, a sensor fixed on the base member, and a pair of shafts movably mounted on the base member and adapted to move to and from the timing ring.
Patent CA-1337304-C (CA)
Inventor: MILLG RD LARS OLOF ANDERS
IPC: G01K7/02
Filed: 1989-09-21
Granted: 1995-10-10
Abstract: The present invention relates to a method to determine the temperature of one or both surfaces of the two surfaces of a Peltiér element. One then calculates the temperature difference (dT) between the surfaces from a known relation for the Seebeck voltage (Up) as a function of the temperature difference and the mean temperature (Ti) of the element from a known relation for the temperature dependance of the internal resistance (Ri) of the element. Finally, to the mean temperature (Ti) one adds and from it subtracts respectively half the temperature difference (dT) between the surfaces.
Patent CA-1341279-C (CA)
Inventor: KLEM ROBERT E
IPC: G01N33/52
Filed: 1989-07-07
Granted: 2001-07-31
Abstract: A compound represented by:    wherein: (a) at least one of the carbons of any of positions 4, 5, 6 or 7 is linked to a chemical moiety containing an anion group which is attached to the benzene ring; (b) the carbon at position 2 is linked to a chemical moiety, X, comprised of at least 2 atoms; (c) a nitrogen atom is located at position 3; (d) a sulfur atom is located at position 1; and (e) a chemical moiety attached to said anion group of subpart (a) which inhibits fluorescence; wherein upon removal of said chemical moiety of subpart (e), the resulting compound is fluorescent. These compounds are useful in fluorescent substrates and in biological assays.