baber/WOPTO huggingface dataset:
Patent CA-1286399-C (CA)
Title: Apparatus for transmitting digital signal
Inventor: EGUCHI TAKEO
IPC: H04L25/49
Filed: 1987-04-10
Granted: 1991-07-16
Abstract: ABSTRACT OF THE DISCLOSURE     In  a  digital  signal  transmission  apparatus  for transmitting  a  digital  signal  through  a  transmission system of the type which inherently generates nonlinear distortions, the present invention, by means of digital circuits on the transmitting side, allows approximation to a linear transmission system by adding to the signal to be transmitted,  compensating distortions,  which are formed according to run-lengths of the digital signal and which will cancel the distortions to be produced in the transmission system.   The compensating distortion which is added advances the phase of the input digital signal transitions from one logical level to another succeeding logical level.
Patent CA-1279725-C (CA)
Title: Servo gain compensation in a disc drive
Inventor: KNOWLES VERNON L
IPC: G11B5/596
Filed: 1987-06-19
Granted: 1991-01-29
Abstract: Abstract Improvements  are realized in magnetic disc drives in minimizing servo gain variations from one head to another and  in differing track offset positions by providing  servo code  patterns and methods of fabricating such  patterns  in which  magnetic  heads of differing widths overlap the  same amount  of servo code and in which servo gain variations  in track  offset positions are minimized by  maintaining  servo code overlap by the magnetic heads relatively constant up to substantially one half track offsets of magnetic head.
Patent CA-1284266-C (CA)
Inventor: POWELL ANTHONY D
IPC: A61L2/07
Filed: 1987-08-27
Granted: 1991-05-21
Abstract: Abstract of the Invention Method and apparatus for providing a low temperature environment at a substantially constant and uniform temperature.  A closed chamber is provided with an inlet and outlet.  The chamber is operated at subatmospheric pressure. steam is introduced into the chamber for providing the heating environment at a preselected temperature.  A vacuum is applied to the chamber to regulate the steam about its saturation point for a preselected temperature.
Patent CA-1281598-C (CA)
Title: Expandable prehangable split door frame
Inventor: BAUER GUNTHER H
IPC: E06B1/20
Filed: 1987-09-11
Granted: 1991-03-19
Abstract: EXPANDABLE PREHANGABLE SPLIT DOOR FRAME                ABSTRACT OF THE INVENTION           A door frame having a hinged jamb, a strike jamb and a header, each of which is in two parts.  One part of each pair has a channel for slidably receiving a lipped segment of the other part.  A lipped cover on the first part engages the lipped segment of the second part to limit movement of the two parts relative to one ano-ther.  A biasing means on the first part urges the two parts against one another.  The biasing means is rigidly affixed to the first part and extends across the channel to leave a small gap through which the lipped segment of the first part can be rotatably inserted.
Patent CA-1287135-C (CA)
Inventor: BUCHWALD HOLGER
IPC: H01B7/28
Filed: 1987-11-18
Granted: 1991-07-30
Abstract: ABSTRACT   Disclosed is a swellable nonwoven fabric strip for a cable wrapping having a specific resistance of 3000 .OMEGA. cm2  or less and a method for its manufacture.  The strip is in the form of a fibrous flat material without perceptible layered construction, wherein the fibers are aligned mainly lengthwise of the strip and are 95 to 75 wt.-% in the form of viscose fibers and 5 to 25 wt.-% in the form of shrunken polyvinylalcohol fibers soluble in water beginning at 80°C.  The flat material is uniformly impregnated with a binding agent which under the action of water loses its ability to adhere. The strip contains swelling powder particles which swell upon the access of water but do not dissolve, the swelling agent being distributed in an amount of 20 to 40 g/m2 .  The strip is capable of swelling at the place of access of the water to at least 90% of its achievable thickness in approximately one minute.
Patent CA-1326737-C (CA)
Title: Phosphinic acid derivatives
Inventor: BROADHURST MICHAEL J
IPC: A61K38/00
Filed: 1987-12-07
Granted: 1994-02-01
Abstract: Abstract The invention provides compounds of the formula                         I   wherein R1-R5 and X have the significance given in the description, and their pharmaceutically acceptable salts. They inhibit the enzyme collagenase and can be used in the form of medicaments for the control or prevention of degenerative joint diseases such as rheumatoid arthritis and osteoarthritis. The compounds of formula I and their pharmaceutically acceptable salts can be manufactured according to generally known methods.
Patent CA-1301212-C (CA)
Inventor: KAUTT JEAN-JACQUES
IPC: E05C9/00
Filed: 1987-12-23
Granted: 1992-05-19
Abstract: A cover member is adapted to a multilock fitting applicable to doors, windows or the like, this fitting consisting essentially of a casement bolt, or a plurality of lock- or striker plate blocks. The cover member consists of a rectangular-sectioned tubular element of which one of the minor sides is coplanar with the lateral edge of the jamb of the movable or fixed frame of the door, window or the like, one of the major sides of the tubular element provided with apertures covering the plurality of lock- or striker plate blocks and comprising detent-positioning means interposed between the lock- or striker plate blocks and the inner surface of the movable or fixed frame, respectively, of the door, window or the like.
Patent CA-1295921-C (CA)
Inventor: GISLER HANS
IPC: B60W30/18
Filed: 1988-04-14
Granted: 1992-02-18
Abstract: ABSTRACT       In arms forming the forked end of a base plate, a shaft is rotat-ingly mounted.  Disposed rotatingly and axially displaceably in the mid-region of the shaft is a first drum.  On one side of the first drum, a second drum is rotatingly mounted on the shaft.  On the other side of the first drum, a third drum is connected rotation-tight to the shaft.          The first drum has three circumferential grooves, and a driver pin pro-jects into the middle groove.  This pin is fixed to a toggle lever which is connected to a piston rod of a hydraulic drive cylinder.  Extending axially from each of the two end faces of the first drum is a cam in-tended to engage recesses in the second and third drums.  A foot pedal is connected to the first drum by a Bowden cable; and depending on the posi-tion of the drum, the rotary motion produced by means of the foot pedal is transmitted to the second or third drum.  This apparatus makes it pos-sible to simplify considerably the operation of a utility vehicle, there-by increasing driving safety.
Patent CA-1339757-C (CA)
Title: Production of purified biologically active, bacterially produced recombinant human csf-1
Inventor: HALENBECK ROBERT F
IPC: A61K38/00
Filed: 1988-04-15
Granted: 1998-03-17
Abstract: A process for recovering dimeric, biologically active CSF-l from bacterially expressed recombinant CSFl genes is described.  The process comprises recovery of the solubilized monomeric form, followed by dimerization under refolding conditions and further purification of the dimer.  Heterodimers may also be produced by this process.
Patent CA-1307382-C (CA)
Inventor: STAHL HENRIK O
IPC: B01J8/00
Filed: 1988-05-18
Granted: 1992-09-15
Abstract: Modular manifold means for distributing a flow of a gas in a preferably catalytic reactor.            ABSTRACT:        Modular manifold means for distributing a flow of a gas in a reactor, comprising a tank or a container, within the walls of which a bed for a granulated catalyst or substance, with which the gas is to react, is arranged, which bed, at least partially, is surrounded by gas-permeable gratings. In order to provide elements that may pass through a narrow manhole and from which it is possible to construct passages for providing a uniform flow through the reactor bed, the modular manifold means each comprises an elongate tube, which is closed at one end and open for inlet of gas at the other end, said tube having a gas-impermeable rear sidewall with a shape corresponding to the walls of the tank and a front side comprising a gas-permeable grating and placed inside the grating a sheet or plate provided with a large number of nozzles.            (Fig. 1)
Patent CA-1292709-C (CA)
Title: Chemical/biological process to oxidize multimetallic sulphide ores
Inventor: HACKL RALPH P
IPC: C22B3/18
Filed: 1988-07-08
Granted: 1991-12-03
Abstract: ABSTRACT OF THE DISCLOSURE This application relates to an improved method for oxidizing multimetallic sulphide ores and concentrates, using a combination chemical/biological leaching process and at least three different types of bacteria.  The treatment process for multi-metallic ores such as arsenopyrite can be made to work rapidly and to as much as 98% sulphide oxidation, when the finely ground ore or concentrate is leached in agitated, air sparged tanks, with strains of three different bacteria, Thiobacillus thiooxidans T. ferrooxidans, and Leptospirillum ferrooxidans. L. ferrooxidans is quite similar to T. ferrooxidans and obtains its energy for growth from the oxidation of ferrous iron and sulphide minerals.  The process of the invention may conveniently be a continuously operating process utilizing more than one stage.  Most of the chemical/biological action using the bacterium T. thiooxidans preferably takes place in the first stage, while in the subsequent stages the activity of T. thiooxidans is decreased in favour of the activity of the bacteria T. ferrooxidans and L. ferrooxidans, which oxidize the by then more readily available sulphide portion of the pyrite minerals present in most arsenopyrite ores and concentrates.  According to the invention, bacterial cultures of T. thiooxidans, T. ferrooxidans and L. ferrooxidans used are first adapted to high dissolved arsenic concentrations and low pH by subjecting the cultures in a solution containing dissolved arsenic, to successive incremental increased concentrations of arsenic.  Conditions of low shear agitation are used.
Patent CA-1294103-C (CA)
Title: Injection molding machine with a resin pressure detecting function
Inventor: YAMAMURA MASATO
IPC: B29C45/58
Filed: 1988-07-22
Granted: 1992-01-14
Abstract: Abstract of the Disclosure An injection molding machine having a resin pressure detector, which is capable of accurately detecting the resin pressure, without the need of correcting the detected resin pressure, and facilitates assemblage, maintenance, and replacement.     A strain gauge is bonded on an annular member which is fixed to a rear end face of a metering bearing housing by bolts, and which has a rear end face to which a ball nut is fixed by bolts.  Upon assemblage, no substantial deformation of the annular member occurs, and hence no zero point shift in the strain gauge is found, so that an accurate detection is achieved by the strain gauge.  The maintenance and replacement of the annular member, disposed outside the housing, can be easily performed.
Patent CA-1328218-C (CA)
Inventor: HOWARD JOHN R
IPC: A61K47/00
Filed: 1988-07-28
Granted: 1994-04-05
Abstract: Abstract CONTROLLED RELEASE FORMULATION       A controlled release pharmaceutical formulation is provided which releases a pharmaceutical of a basic character at a controlled rate regardless of the pH of the environment, which formulation includes a basic pharmaceutical, up to about 45% by weight of a pH dependent polymer which is a salt of alginic acid, such as sodium alginate, up to about 35% by weight of a pH-independent hydrocolloid yelling agent having a viscosity of up to about 100,000 centipoises in 2% solution at 20°C, binder and excipients.
Patent CA-1327762-C (CA)
Title: Dna constructs containing a kluyveromyces alpha-factor leader sequence for directing secretion of heterologous polypeptides
Inventor: VAN DEN BERG JOHANNES A
IPC: C12N15/62
Filed: 1988-07-28
Granted: 1994-03-15
Abstract: ABSTRACT OF THE DISCLOSURE DNA constructs that are useful for providing secreto-ry expression of heterologous polypeptides in yeast compri-sing a DNA sequence that includes a Kluyveromyces .alpha.-factor leader sequence linked to the heterologous polypeptide by a yeast processing signal. Constructs employing the K. lactis .alpha.-factor leader and processing signal sequences, with and without spacer, linked to prochymosin are exemplified.
Patent CA-1304166-C (CA)
Inventor: STIMAC GARY A
IPC: G06F12/06
Filed: 1988-08-03
Granted: 1992-06-23
Abstract: SOFTWARE EMULATION OF BANK-SWITCHED MEMORY     USING A VIRTUAL DOS MONITOR AND     PAGED MEMORY MANAGEMENT                         ABSTRACT      A virtual DOS monitor is disclosed which uses the paging hardware of a processor such as the Intel 80386 microprocessor in conjunction with its Virtual-8086 mode of operation to emulate expanded memory using extended memory.  Support for application programs which access expanded memory is thereby provided without the need for additional memory boards or other hardware.
Patent CA-1310986-C (CA)
Title: Increasing the level of 2-methyl-2-butene in isoamylene
Inventor: MICHAELSON ROBERT C
IPC: C07C5/25
Filed: 1988-09-30
Granted: 1992-12-01
Abstract: ABSTRACT OF THE DISCLOSURE     A method for increasing the ratio of 2-methyl-2-butene (2MB2) to 2-methyl-1-butene (2MB1) in isoamylenes involves fractionating a feedstream containing tertiary amyl methyl ether (TAME) and isoamylenes including 2MB2 and 2MB1 in a ratio of about 2:1 to effect a separation between an overhead hydrocarbon fraction of isoamylenes including 2MB2 and 2MB1 in a ratio of about 1:1,  a bottoms fraction including TAME,  and a sidestream hydrocarbon fraction consisting essentially of isoamylenes including 2MB2  and 2MB1  in a ratio of about 6 to 12:  1,  recovering the sidestream hydrocarbon fraction, and recycling the overhead hydrocarbon fraction of isoamylenes to form a mixture which is subsequently reacted to form the feedstream. Prior to fractionation, the  feedstream is formed by passing isoamylene, and optionally TAME, in a vapor phase over an ether cracking catalyst which isomerizes isoamylene and converts  2MB1  to  2MB2,  i.e.,  the  feedstream  for fractionating, which contains 2MB2 and 2MB1 in a ratio of 2 to 5:1.   A method for converting 2-methyl-1-butene to 2-methyl-2-butene which may be used to form the feedstream for fractionating  involves providing a hydrocarbon stream comprising isoamylenes including 2MB1 and 2MB2 in a ratio of within the range of 1:1 to 5, adding about TAME to the isoamylenes to form a mixture which is passed in the liquid phase at a temperature and a LHSV which favors isomerization over an acidic ion exchange resin catalyst to produce a reaction product including 2MB1, 2MB2 in a ratio of 1:6 to 12, and TAME.
Patent CA-1308995-C (CA)
Inventor: FRIEDLE DENNIS J
IPC: B63H20/00
Filed: 1988-10-05
Granted: 1992-10-20
Abstract: ABSTRACT OF THE DISCLOSURE     Disclosed herein is a marine propulsion device comprising a transmission supported on the marine propulsion device and including a clutch member movable between a neutral position and a drive position, a shift lever supported on the marine propulsion device by a pivotal mounting and connected to the clutch member to effect movement of the clutch member in response to movement of the shift lever, and cam and follower structure adapted to be connected to a remotely actuated link and connected to the shift lever for displacing the shift lever to effect movement of the clutch member, and for permitting over-travel of the link without displacing the shift lever after shift lever movement effecting movement of the clutch member to the drive position, and for temporarily disabling engine ignition at the time of clutch member movement from the drive position.
Patent CA-1328843-C (CA)
Inventor: AOYAGI JUURO
IPC: B01D69/08
Filed: 1988-11-01
Granted: 1994-04-26
Abstract: ABSTRACT OF THE DISCLOSURE         The present invention discloses a blood cleaning hollow fiber membrane characterized by comprising a hydrophobic porous hollow fiber membrane and having a hydrophilic thin layer formed at least on the inner surface of said hollow fiber membrane by the grafting of a hydrophilic compound through the agency of a gamma ray.  Also disclosed is a method for the cleaning of freeze preserved blood in which either first or second liquid passing spaces of a plurality of blood cleaning apparatuses are connected in series, each such apparatus incorporating therein a multiplicity of porous hollow fiber membranes.  As a result, continuous blood flow paths are formed, and these paths are disposed substantially linearly and effect the required cleaning of blood by passing the blood to be cleaned through the continuous blood flow paths.  Different or similar cleaning liquids are fed to the plurality of second liquid passing spaces or first liquid passing spaces which are independent of each other.
Patent CA-1334935-C (CA)
Title: Dithranol compositions
Inventor: WHITEFIELD MARTIN
IPC: A61K31/05
Filed: 1988-12-21
Granted: 1995-03-28
Abstract: The invention provides novel pharmaceutical compositions for topical application to the skin, e.g. for use in the treatment of psoriasis, comprising very finely divided dithranol dispersed in a single phase aqueous medium comprising, in solution, a water-soluble chelating agent, a water-soluble antioxidant, and a water-soluble thickener or gelling agent.  These compositions have a very substantially reduced tendency to stain clothing or other material with which they come into to contact.
Patent CA-1295660-C (CA)
Title: Motor stoppage detection using back emf voltage
Inventor: ROWAN TIMOTHY M
IPC: H02P3/18
Filed: 1988-12-30
Granted: 1992-02-11
Abstract: Abstract of the Invention An AC electric motor can be braked by applying current pulses to the motor when the polarity of the supply voltage is opposed to the polarity of the back electromotive force (emf) voltage across a stator coil of the motor.  This cur-rent application continues until the motor has stopped.  The stoppage is detected by sensing when the current is being applied during every cycle of the supply voltage.  There-after, the polarity pattern of back emf voltage induced across each of the motor stator coils is sensed.  The occur-rence of a back emf voltage polarity, pattern that remains unchanged for a given number of cycles is detected.  There-after, a change in this pattern is sensed and the braking current application either ceases or continues for an ad-ditional predetermined interval.
Patent CA-1336421-C (CA)
Title: Ozone and wear resistance in styrene-butadiene rubber
Inventor: SILVERMAN JOSEPH
IPC: C08J3/24
Filed: 1989-02-03
Granted: 1995-07-25
Abstract: SBR is treated with sulfur, an optional chemical accelerator and a crosslinking agent, under mild heat, to form a preform having sufficient strength to resist handling.  The preform is exposed to substantial irradiation on the order of 5-25 Mrad dose of 10 MeV electrons equivalent, which significantly improves wear resistance, tear strength, crack initiation and growth resistance and ozone resistance.
Patent CA-1317119-C (CA)
Title: Cylinder lock
Inventor: URBY LARS
IPC: E05B27/00
Filed: 1989-02-28
Granted: 1993-05-04
Abstract: ABSTRACT            A cylinder lock has a standard lock mode and a service lock mode. If the lock plug is turned to the service lock mode with the standard key and left in this position, the plug can be rotated with the aid of the service key. The service key is latched against with drawal, when the lock is in its standard mode. The plug can be displaced axially through a distance of about 0.9 mm, after inserting the standard or service key. A latching device prevents axial return movement of the plug when an attempt is made to remove the service key with the lock in its standard lock mode. This can avoid unintentional jamming of the lock in the standard mode.            (Figures 5 and 7 for publication)
Patent CA-1338673-C (CA)
Title: Catalyst recycle in the carbonylation of isobutylphenylethanol to ibuprofen
Inventor: MOTT GRAHAM N
IPC: C07C67/00
Filed: 1989-04-14
Granted: 1996-10-22
Abstract: In the carbonylation of isobutylphenyl ethanol to ibuprofen in the presence of a phosphine ligand-stabilized palladium catalyst, it has been found that the catalyst complex will precipitate from the organic phase of the carbonylation reaction which includes the ibuprofen product.  Precipitation of the catalyst is facilitated by removing the aqueous phase from the reaction and removing any solvents from the organic phase.          The precipitated complex catalyst can be recycled without further treatment.
Patent CA-1321218-C (CA)
Inventor: BEAUX ALAIN
IPC: E05B65/12
Filed: 1989-05-08
Granted: 1993-08-10
Abstract: ACTUATOR FOR RENDERING INOPERATIVE A LATCH          FOR IN PARTICULAR A MOTOR VEHICLE DOOR     A B S T R A C T     This actuator comprises in combination an electric motor (1) capable of driving in rotation a screw (2) which shifts a nut (6) which positively drives a carriage (7) in the direction for rendering the latch operative and, through a spring (8), in the direction for rendering the latch inope-rative, the carriage (7) driving an output lever (9) connec-ted to the interior lever for rendering the latch inoperative a pivotal cam (10) having cam surfaces along which is slida-ble a control stud (14) connected to the nut (6).  This cam controls a connecting kinemative system (11, 12) connected to the interior lever for rendering the latch inoperative, on one hand, and to the exterior lever controlling the opening of the latch on the other hand, through means outside the case of the actuator.  This  anti-theft system permits un-locking the latch normally by means of a key from the anti-theft position in the event of a  breakdown in the electric supply.
Patent CA-1322922-C (CA)
Inventor: KENSEY KENNETH
IPC: A61F2/02
Filed: 1989-05-15
Granted: 1993-10-12
Abstract: DEVICE FOR SEALING PERCUTANEOUS PUNCTURE IN A VESSEL A device (100, 200) and method for sealing a puncture or incision (28) formed percutaneously in tissue separating two internal portions of the body of a living being, e.g., a puncture or incision in an artery (24), in the gall bladder, in the liver, in the heart, etc. The device comprises plug means having a holding portion (106) which is adapted to engage portions of the tissue adjacent the puncture or incision to hold the plug means in place and a sealing portion (102) formed of an expandable material which expands automatically in response to the ambient surroundings and which extends through the puncture or incision (28) to engage the tissue contiguous therewith to seal the puncture or incision (28) from the flow of body fluid or material therethrough. In the preferred embodiment, the closure or plug means is formed of a biodegradable material.
Patent CA-1339452-C (CA)
Title: Enantiomers of citalopram and derivatives thereof
Inventor: PERREGAARD JENS
IPC: C07D307/84
Filed: 1989-06-13
Granted: 1997-09-09
Abstract: The present invention relates to the two novel enantiomers of the antidepressant drug 1-(3-dimethylaminopropyl ) -1- (4'-fluorophenyl) -1,3-dihydroisobenzofuran-5-carbonitrile (citalopram) of the following formula I:               I     and to the use of these enantiomers as antidepressant compounds as well as the possible use as geriatrics or in the cure of obesity or alcoholism.