baber/WOPTO huggingface dataset:
Patent CA-1327266-C (CA)
Inventor: WATSON RICHARD W
IPC: C01B17/04
Filed: 1987-03-06
Granted: 1994-03-01
Abstract: ABSTRACT                       TREATMENT OF GASES   A feed gas stream containing at least 60% by volume of hydrogen sulphide is burnt in a first combustion region to form water vapour and sulphur dioxide.  Oxygen is employed to support combustion is the region. Thermal reaction then takes place in a thermal reaction region between hydrogen sulphide and sulphur dioxide to form sulphur vapour and water vapour.  The resulting gas mixture is then cooled and sulphur vapour is extracted in a condenser.  The gas mixture then passes into a second combustion region in which a further portion of the hydrogen sulphide is burnt in the presence of oxygen to form further sulphur dioxide and to adjust the mole ratio of hydrogen sulphide to sulphur dioxide to about 2:1.  Further reaction between hydrogen sulphide and sulphur dioxide may be conducted in a further thermal reaction region and in catalytic reactors with further sulphur extraction in further condensers.  The mole ratio of hydrogen sulphide to oxygen entering the first combustion region per unit time is greater than 2:1 and the mole ratio of hydrogen sulphide to fluid(s) (if any) other than oxygen being introduced into the first combustion region is greater than 3:2 and preferably greater than 4:1. By using substantially pure oxygen to support combustion of the hydrogen sulphide, a relatively large flow rate of feed gas mixture may be handled in a plant of given size.
Patent CA-1321393-C (CA)
Title: Besylate salt of amlodipine
Inventor: DAVISON EDWARD
IPC: A61K31/44
Filed: 1987-04-02
Granted: 1993-08-17
Abstract: Abstract Improvements in Pharmaceutically Acceptable Salts Improved pharmaceutical salts of amlodipine, particularly the besylate salt, and pharmaceutical compositions thereof.  These salts find utility as anti-ischaemic and anti-hypertensive agents.
Patent CA-1279250-C (CA)
Inventor: HALLIEZ GERARD
IPC: B61D33/00
Filed: 1987-06-26
Granted: 1991-01-22
Abstract: A railway car seat modularly adaptable to provide various seating accommodations, consisting of a load bearing frame (10), a seat element (20) and a backrest element (30), where the frame (10) is made up of a tubular member (11) connecting two horizontal rail members (12) serving to support the seat element, the seat element (20) and backrest element (30) each having a semicircular channel (21A, 31A), both of which channels mate with the tube (11).
Patent CA-1320994-C (CA)
Inventor: FRASER DANA
IPC: H03K19/003
Filed: 1987-06-29
Granted: 1993-08-03
Abstract: ABSTRACT          To reduce the effect of on-chip power rail perturbation on integrated circuit performance, a lead configuration is provided having two or more leads originating at a single terminal, e.g. a pin.  While merged near the pin in a common segment, the leads connect on the integrated circuit chip to respective isolated internal rails of the same type serving respective device stages.  Preferably, the inductance of the common segment is minimized.  In accordance with the invention, an octal registered transceiver is provided with isolated Vcc and ground rails for the latch and output buffers.  The lead configuration described above is used for both Vcc and ground. Several circuits are improved to optimize performance of the device, including a DC Miller killer circuit.  Also in accordance with the invention, the paddle of a PDIP leadframe is supported by tiebars that extend to the dambars at the sides of the leadframe.  An additional lead is obtained from a conductive element originating near the paddle and supported by one of the two lead frame rails.
Patent CA-1311244-C (CA)
Title: Process for synthesis of amidoacids using a cobalt catalyst and a bidental phosphine ligand
Inventor: LIN JIANG-JEN
IPC: C07C233/47
Filed: 1987-09-02
Granted: 1992-12-08
Abstract: PROCESS FOR SYNTHESIS OF AMIDOACIDS USING A COBALT CATALYST AND A BIDENTAL PHOSPHINE LIGAND                    (D#80,605-F) ABSTRACT OF THE DISCLOSURE           A process is disclosed for producing novel N-acetyl-aminoacid which comprises reacting a feedstock from the group consisting of simple olefins, acetamide and synthesis gas with a catalyst comprising a cobalt-containing compound promoted by a bidental-phosphine ligand in a solvent at a pressure of 500 psi or greater and a temperature of 50°C or greater.  The presence of the ligand increases both reaction rate and cobalt catalyst stability.     pg:EX9I/k
Patent CA-1327654-C (CA)
Inventor: CLARKE KEITH B
IPC: C02F1/00
Filed: 1987-09-22
Granted: 1994-03-08
Abstract: "IMPROVEMENTS IN THE TREATMENT OF WATER TO REMOVE               GAS VACUOLATE CYANOBACTERIA"                  ABSTRACT OF THE DISCLOSURE         The treatment of water to remove gas vacuolate cyanobacteria is effected by subjecting the water to a predetermined pressure by being pumped down a centrally located pipe in a bore-hole, which is steel lined.  This causes the gas vesicles in the cyanobacteria to collapse.          The treated water is then stored in a settling tank where the cyanobacteria sink to the bottom and can be removed along with any other sediment in the water.  The method can be applied to decrease the amount of cyanobacteria with gas vesicles in a lake or other water impoundment.            (Fig. 1)
Patent CA-1331546-C (CA)
Inventor: UCHIDA YUKIO
IPC: C23C2/12
Filed: 1987-10-23
Granted: 1994-08-23
Abstract: Abstract of the Disclosure A hot-dip aluminum-coated steel sheet the substrate steel of which consists essentially of: C: less than 0.05% by weight, Si: less than 0.10% by weight, Cu: 0.10 - 0.50% by weight, Ni: 0.10 - 0.50% by weight, Cr: 1.80 - 3.00% by weight, N: not more than 0.02% by weight and Fe and unavoidable incidental impurities, which may contain at least one of Ti, Zr, Nb and V in an amount not less than the atomically equivalent amount of C+N, has excellent corrosion resistance against both hot dry oxidation and wet corrosion by condensate of internal combustion engine exhaust gas.
Patent CA-1282116-C (CA)
Title: Method and apparatus for well casing inspection
Inventor: HAMBERG ALLAN
IPC: G01R27/18
Filed: 1987-11-26
Granted: 1991-03-26
Abstract: ABSTRACT OF THE DISCLOSURE  "METHOD AND APPARATUS FOR WELL CASING INSPECTION"           An oil and gas well casing inspection tool is disclosed.  The casing inspection tool comprises a body; inner and outer contact rollers extending from the body; means for generating a current between the outer contacts; and means for measuring a potential difference between the inner contacts.  To enhance the accuracy of the device, capacitance means are used downhole to increase the amount of current that can be supplied to the casing.  Leaf springs engage the contact rollers to maintain a clean connection between the body and the casing.  Signal coding and decoding means are also disclosed.
Patent CA-1300701-C (CA)
Title: Connector assembly
Inventor: JACOBS BRIAN D
IPC: H01R12/72
Filed: 1988-04-08
Granted: 1992-05-12
Abstract: ABSTRACT     This invention provides a connector assembly for forming electrical connections to at least two circuit boards disposed in a parallel surface-to-surface relationship.  The assembly comprises at least two modules, each of which comprises connector elements.  A first set of connector ele-ments provides connections between the circuit board and another electrical device, and a second set of connector elements provides connections between the circuit boards.     A heat sink may be provided between the circuit boards. Electronic components on the circuit boards may be sealed by means of a gel, which can also serve to-transmit heat from the components.
Patent CA-1300386-C (CA)
Title: Ice mould and method of ice sculpture
Inventor: LIPKE CECIL W
IPC: F25C1/04
Filed: 1988-05-06
Granted: 1992-05-12
Abstract: ABSTRACT           A mould assembly for moulding ice sculpture and having complementary mould members defining an open topped mould cavity, a water impervious flexible mould liner conforming to the interior of the cavity and a thermally insulating cover adapted to close the open top of the cavity. Means are provided to vary the rate of heat transfer through the mould members between differ-ent areas of the mould members such that the relative rate of freezing of the water adjacent the different areas is controlled.
Patent CA-1294991-C (CA)
Title: Low melting glass composition
Inventor: DUMESNIL MAURICE E
IPC: C03C3/12
Filed: 1988-05-09
Granted: 1992-01-28
Abstract: LOW MELTING  GLASS COMPOSITION    Abstract Fluid, stable glasses that are useful for low temperature sealing applications ace made by adding jointly bismuth oxide, zinc oxide, and phosphorus pentoxide to the lead oxide-vanadium oxide binary.  The phosphorous pentoxide may be replaced partially or entirely with niobium pentoxide and/or tantalum pentoxide.  Additives and fillers may be incorporated into the glass composition to enhance the fluidity or adhesive characteristics of the glass, alter its coefficient of linear thermal expansion or make it suitable for die attach application.  Group V metal oxides, particularly niobium pentoxide, are preferred fillers for altering the coefficient of linear thermal expansion.  Similarly  these Group V metal oxides may also be added as particulate fillers to lead borate, lead borosilicate and zinc borate glasses.  Silver metal is a preferred filler for making die attach compositions.
Patent CA-1289257-C (CA)
Inventor: MAHESHWARI VIJAY
IPC: G06F7/50
Filed: 1988-06-17
Granted: 1991-09-17
Abstract: ABSTRACT    The arithmetic operations performed for floating point  format  numbers  involve  procedures  having  a multiplicity  of  major  steps.    The  effective subtraction operation can be accelerated by using two methods  of  execution  depending  on  whether  the absolute  value of  the  difference  between  the arguments of the exponents,  ABS(DELTA(E))  is ?1 or >1.  The procedure for ABS(DELTA(E))?1 requires more major  process  steps  than  the  situation  where ABS(DELTA(E))>1.   To accelerate only  the procedure having  more  major  process  steps,  the  two  least significant  bits  of  both  exponent  arguments  are examined and based on the examination, the lengthier procedure  can  be  initiated  in  parallel  with  the process step determining the value of ABS(DELTA(E)).          When  the  lengthier  procedure  is  determined  to  be inappropriate  based  on  the  determined  value,  the results of the lengthier process can be discarded.          Otherwise,  the  lengthier  process,  already  in progress, is continued.
Patent CA-1316660-C (CA)
Title: Method for producing a molded article having colored features
Inventor: BRAULT ALFRED F
IPC: B29C41/22
Filed: 1988-07-15
Granted: 1993-04-27
Abstract: A METHOD FOR PRODUCING A MOLDED ARTICLE HAVING COLORED FEATURES             Abstract of the Disclosure A method for manufacturing decorative features in situ in a base layer cast plastic material includes the steps of providing a mold tool having a surface thereon which is recessed in the form of a desired decorative feature and includes a sharp break line between the recess and the surrounding mold surface; depositing a covering of thermoplastic material in the recess surface and heating the tool to melt the thermoplastic material on the recess surface to form segments of plastic corresponding to the desired decorative feature; thereafter cooling the covering and stripping it from the mold by separating it at sharp break line interface between the deposited material on the recessed surface and a thin film membrane so as to retain segments of material deposited in the mold tool; reheating the mold tool to partially remelt the retained segments and thereafter depositing a base layer of thermoplastic material across the full surface of the mold and reheating the mold to bond the retained segments to the base layer and cooling and stripping the mold to form a finished plastic shell having a decorative feature formed in situ therein.
Patent CA-1308811-C (CA)
Title: Method and apparatus for implementing a prml code
Inventor: MARCUS BRIAN H
IPC: H03M13/23
Filed: 1988-07-15
Granted: 1992-10-13
Abstract: ABSTRACT OF THE INVENTION      METHOD AND APPARATUS FOR IMPLEMENTING A PRML CODE      A rate 8/9, constrained partial response class IV code having run length limitation parameters (0,3/5) is provided for any partial response (PR) signaling system employing maximum likelihood (ML) detection.
Patent CA-1302622-C (CA)
Title: Polyimide processing additives
Inventor: BURKS HAROLD D
IPC: C08K5/3415
Filed: 1988-08-10
Granted: 1992-06-02
Abstract: Abstract of the Invention A process for preparing polyimides having enhanced melt flow properties is described.  The process consists of heating a mixture of a high molecular weight poly(amic acid) or polyimide with a low molecular weight amic acid or imide additive in the range of 0.05 to 15% by weight of additive. The polyimide powders so obtained show improved processability, as evidenced by lower melt viscosity by capillary rheometry.  Likewise, films prepared from mixtures of polymers with additives show improved processability with earlier onset of stretching by TMA.
Patent CA-1340397-C (CA)
Title: Method of preparation and use for zona pellucida antigens and antibodies for sterilization and contraception
Inventor: DUNBAR BONITA SUE
IPC: C07K16/00
Filed: 1988-10-06
Granted: 1999-02-16
Abstract: The invention relates to antigenic preparations useful for inducing the production of antibodies in an individual which will bind to epitopes on zona pellucida. Also disclosed are immunogenic compositions and methods for immunizing an individual to enable the production of antibodies to zona pellucida antigens.  Also disclosed are the use of these recombinant molecules and monoclonal antibodies thereto for immunocontraception or sterilization.
Patent CA-1308490-C (CA)
Title: Operation apparatus
Inventor: HIDAKA NORIHIRO
IPC: G06F7/22
Filed: 1988-10-17
Granted: 1992-10-06
Abstract: Abstract of the Disclosure Data divided by delimiters representing the boundaries of the data is stored in a data memory. Instructions each including designation of a delimiter are stored in an instruction register.  A control cir-cuit decodes an instruction output from the instruction register, and repeats processing of the data read out from the data memory in accordance with the decoded instruction every time the data is read out therefrom. A delimiter detector outputs a coincidence signal when it detects that a delimiter which coincides with the delimiter in the instruction is present in the data read out from the data memory.  When this coincidence signal is input to the control circuit, the control circuit ends the processing which has been performed in accord-ance with the instruction.
Patent CA-1308951-C (CA)
Title: Roundwood highway guardrails
Inventor: GAILLARD CHRISTIAN C
IPC: E01F15/00
Filed: 1988-11-22
Granted: 1992-10-20
Abstract: A B S T R A C T       Road safety guardrails are constituted by vertical wooden posts carrying at least one horizontal rail made up of wooden logs which are connected end-to-end by pairs of metal straps which are interconnected by bolts, each passing through both straps and one or other of the logs.  Each inter-log connection is reinforced by incorporating metal rods that run through each log and intersect the diametrical plane containing the bolts for interconnecting the straps.
Patent CA-1322809-C (CA)
Inventor: DUJARDIN RALF
IPC: G11B7/24
Filed: 1989-02-03
Granted: 1993-10-05
Abstract: Polycarbonates containing aralkylphenyl end groups, their preparation and their use A b s t r a c t This invention relates to thermoplastic, aromatic poly-carbonates prepared with the aid of chain terminating agents corresponding to formula (I)                (I)             , to a process for the preparation of these polycarbonates and to their use for the production of moulded articles for optical purposes.     Le A 25 195
Patent CA-1323526-C (CA)
Inventor: AULT RUSSELL L
IPC: E06B3/20
Filed: 1989-02-08
Granted: 1993-10-26
Abstract: A B S T B A C T An assembly for multipaned windows and/or doors is fabricated from sashes having a fibrous wool core and a polymeric outer shell.  The sash contains a plurality of orifices through the shell, but not the core, to provide a filtered path for air and moisture movement in and out of the cavities between panes to reduce the condensation of moisture on the panes.
Patent CA-1316405-C (CA)
Title: Distributor for a monoseed sowing machine
Inventor: RIBOULEAU MICHEL
IPC: A01C7/04
Filed: 1989-04-07
Granted: 1993-04-20
Abstract: DISTRIBUTOR FOR A MONOSEED SOWING MACHINE     ABSTRACT   The distributor comprises a generally cylindrical case which is formed by a housing (1) and a cover (4) between which is rotatively mounted a distributor disk (18) provided with circumferentially spaced-apart orifices (48, 50).          Inside the housing, a partition (24) defines a depression passageway (26) in communication with an suction duct (2).          The passageway (25) includes a wide upper part (27) in the shape of a crescent which is extended at both ends by a narrow branch (28,30).   formed in the upper part of the30)~  Forlned in the u~er ~art of the descendiny branch (30), relative to the direction of rotation of the disk (18), is a cavity (32, 33) for receiviny a rernovable element (34) fox isolating this branch from the source of depression.  The inner wall of the passageway is ~rovided witl1 an air intake (39) whose openiny .is adjustable.    Fig. 1
Patent CA-1327027-C (CA)
Title: Treatment of mine tailings
Inventor: BLOWES DAVID W
IPC: B09B1/00
Filed: 1989-06-07
Granted: 1994-02-15
Abstract: Abstract of the Disclosure TREATMENT OF MINE TAILINGS            Mine tailings containing iron sulphides can cause acidity in groundwater travelling down through the tailings, if the tailings ever become exposed to the air.  In the worst case, if only an upper level of the tailings becomes exposed, the amount of acidity produced is as if the whole body of tailings were exposed, because ferric ions in the water seeping down from the vadose region to the still-unexposed anaerobic regions tend to cause oxidition of the sulphides below, as if they too had become exposed.  A layer of organic carbon (in the form of wood chippings, seaweed, etc) is added to the body of tailings, just below the (stabilized) water table.  Water seeping down from the vadose region encounters the carbon before reaching the anaerobic sulphides, and most of the oxidation-producing tendency of the ions in this water is dissipated on the carbon, by bacterial action, leaving the anaerobic sulphides below unchanged.  Further layers of organic carbon may be included, below the predicted level of the water table, as a safety factor to cater for errors or accidents that might affect the water table level.
Patent CA-1288856-C (CA)
Title: Surround for an exterior fitting of a house
Inventor: FUNK ANTHONY I
IPC: H02G3/14
Filed: 1989-06-09
Granted: 1991-09-10
Abstract: ABSTRACT OF THE DISCLOSURE      A surround for an exterior fitting of a house.  The fitting is mounted on a wall having a finishing surface mounted on a sheathing.  The surround has a backing plate to be mounted on the sheathing.  An opening in the backing plate receives a fitting.  There is a wall extending outwardly from the backing plate to surround the fitting.  The backing plate can be attached to the sheathing.  A trim plate is received by the backing plate and also has an opening to receive the fitting.  The trim plate is received by the wall of the backing plate with a frictional fit.
Patent CA-1330585-C (CA)
Inventor: WOLFF HENDRIKUS J G
IPC: G05D1/12
Filed: 1989-07-28
Granted: 1994-07-05
Abstract: Abstract The invention relates to a course-correction system provided with a transmitting and control device 1 for wireless correction of the course of a launched object provided with a receiving device 2 by transmitting a course-correction signal containing course-correction information Cq and identification codes Iq for individual or collective correction of objects arranged into fixed or variable groups. The receiving device 2 of each object is thereto provided with identification parameter Pk for selecting an identification code Iq=m from the course correction signal, for which Iq=m = Pk. A fixed group is obtained by identical identification parameters Pk for the objects within the group, while variable group is obtained with different identification parameters Pk but identical course-corrrection information Cq for the objects within the group. The identification parameter Pk of a launched object has a known relation with the trajectory data, such as e.g. the time of lauching the object.          Fig. 1
Patent CA-1339080-C (CA)
Title: Methods and compositions for noninvasive dose-to-effect adminsitration of drugs with cardiovascular or renal vascular acitivities
Inventor: STANLEY THEODORE H
IPC: A61K9/00
Filed: 1989-09-05
Granted: 1997-07-29
Abstract: The present  invention  is directed to methods  and compositions for noninvasively administering drugs in a dose-to-effect manner to produce a cardiovascular or renal vascular activity.   A cardiovascular or renal vascular drug,  which  is  capable  of  absorption  through  mucosal tissues  of  the  mouth,   pharnyx,   and  esophagus  is incorporated into a matrix which is  in the form of a lollipop.  A patient is put at ease when given the lollipop, and the drug rapidly enters the patient's bloodstream as the lollipop  is  sucked.    When treating  the  patient,  the physician can observe the patient's condition and remove the lollipop when it has had a desired effect on the patient.  A lollipop into which a cardiovascular or renal vascular drug has been dispersed is particularly useful for achieving rapid vasodilating,  calcium channel blocking, beta-blocking,   seritonin   receptor   blocking,   angina blocking,  anti-hypertensive,   and  cardiac  stimulating effects and for controlling urine output.
Patent CA-1321019-C (CA)
Inventor: MYATT DAVID
IPC: B60C23/04
Filed: 1989-09-22
Granted: 1993-08-03
Abstract: The antenna 1 can be used with devices of the transponder type. This antenna 1 comprises an inductor 20 and a capacitor 12 forming a resonant circuit. In order to avoid any overheating and to dispose of a sufficiently wide operating range or passband, there is disposed in parallel with the coil 10, a branch comprising two Zener diodes mounted in opposite senses, or any non-linear damping arrangement with equivalent effect. <IMAGE>
Patent CA-1315673-C (CA)
Title: Cementing and rotating an upper well casing attached by swivel to a lower casing
Inventor: STAGG THEODORE O
IPC: E21B33/14
Filed: 1989-09-25
Granted: 1993-04-06
Abstract: (WAH-P-1886) ABSTRACT OF THE DISCLOSURE     A method for completing a well to provide an uncemented lower casing and an upper cemented casing.  The lower casing and upper casing are connected at a swivel joint so that only the upper casing is rotated while cementing.  Inflatable packers and a plug are positioned at the lower casing to prevent entry of cement, while a port collar allows cement to flow into the annulus surrounding the upper casing.        The invention is particularly useful when setting long lengths of casing and when completing highly deviated or horizontal wellbores.  The method also allows an existing conventionally-completed well to be re-drilled and completed as a highly-deviated or horizontal well.