baber/WOPTO huggingface dataset:
Patent CA-2000556-A1 (CA)
Title: Capacitively commutated brushless dc servomotors
IPC: H02K29/06
Filed: 1989-10-12
Abstract: Abstract There are disclosed both one- and two-dimensional, high resolution, brushless DC servomotors that are linear, rotary, planar and cylindrical in nature. All of these employ a capacitive method for deriving the required position and motorcommutation information. In suitable circumstances, particularly two-dimensionalplanar motors on air bearings, the method allows the use of the motor ferromagnetic cores themselves as the capacitive position sensing elements. This leads to a particularly simple and compact type of servomotor design. In addition, since such motors can move at high speed, there are also disclosed two transformer coupled methods for handling the current drive to the motor windings. Both methods are simple, energy efficient, applicable to motors of any number of phases, and in addition, handle motor direction reversals automatically.
Patent CA-2001560-A1 (CA)
Title: Process for coating plastic substrates with powder coating compositions
Inventor: RHUE FREDERICK F
IPC: C08J7/044
Filed: 1989-10-26
Abstract: PROCESS FOR COATING PLASTIC SUBSTRATES    WITH POWDER COATING COMPOSITIONS                  Abstract of the Disclosure A method of coating plastic substrates susceptible to gassing with a powder coating composition is disclosed.  The method is effective in sealing the substrate against popping.
Patent CA-2007365-A1 (CA)
Inventor: BICKLE WILLIAM W
IPC: G07D9/00
Filed: 1990-01-09
Abstract: REUSABLE COIN COUNTER AND HOLDING DEVICE      ABSTRACT OF THE DISCLOSURE        While measuring racks and the like are known to count or measure the number of coins required to wrap same into rolls, the actual wrapping requires considerable experience and dexterity and can be time consuming.  The present device consists of a relatively thin plastic or card semi-circular trough having closed ends and a length equal to the required number of coins in a roll of that particular denomination with the curvature of the trough and length thereof varying with each denomination of coin.      The entire trough and measured contents may then be wrapped in a conventional coin wrapper readily and easily as the closed ends of the trough retain the coins during the rolling process.
Patent CA-2008132-A1 (CA)
Title: Method for reducing reflection-induced fluctuations of structure size in a cover layer in the optical lithography used in the manufacture of integrated circuits in a substrate
Inventor: NOLSCHER CHRISTOPH
IPC: H01L21/027
Filed: 1990-01-19
Abstract: ABSTRACT OF THE DISCLOSURE    For  reducing  reflection-induced  fluctuations  of structure size in a cover layer composed, for example, of photoresist in the manufacture of integrated circuits in a substrate composed,  for example,  of silicon by optical lithography, an antireflection layer is applied under  the  cover  layer.    In  one  embodiment  of  the antireflection layer, it is continuously composed of one material, for example Si3N4, that has a refractive index that is higher than that of the cover layer and has a thickness  that  corresponds  to  one  quarter  of  the wavelength of the light employed for exposure.   In a further embodiment of the antireflection layer,  it is composed of a first layer, of, for example, SiOxNy and of a second layer of, for example, SiO2 whereby the first layer lying under the cover layer has a higher refractive index than the cover layer, the second layer lying under the first layer has a lower refractive index than the first layer and the substrate lying under the second layer has a higher refractive index than the substrate.
Patent CA-2017193-A1 (CA)
Title: N-(aryloxyalkyl)heteroarylpiperidines and-heteroarylpiperazines, a pro cess for their preparation and their use as medicaments
Inventor: STRUPCZEWSKI JOSEPH T
IPC: C07D401/04
Filed: 1990-05-18
Abstract: This invention related to compounds of the formula: <CHEM>  wherein  X is -O-, -S-, - @H, or -@-R<2>;  p is 1 or 2; Y is hydrogen, C1 to C6 alkyl, -OH, Cl, F, Br, I, C1 to C6 alkoxy, -CF3, NO2, or -NH2, when p is 1;  Y is C1 to C6 alkoxy when p is 2 and X is -O-; R<2> is selected from the group consisting of lower alkyl, aryl lower alkyl, aryl, cycloalkyl, aroyl, alkanoyl, and phenyl sulfonyl groups;  Z is -CH- or -N-;  n is 2, 3, 4, or 5; R is hydrogen, alkyl, C1 - C6-alkoxy, hydroxyl, carboxyl, Cl, F, Br, I, amino, C1 - C6-mono or-dialryl amino, -NO2, lower alkyl thiol -OCF3, cyano, acylamino, -CF3, trifluoroacetyl, aminocarbonyl, <CHEM>  where  alkyl is lower alkyl;  aryl is phenyl or <CHEM> R1 is hydrogen, lower alkyl, C1 - C6 alkoxy, hydroxy, Cl, F, Br, I, C1 - C6 alkyl amino, -NO2, -CN, -CF3, -OCF3; and  heteroaryl is <CHEM>  where  Q is -O-, -S-, - @H, -CH=N;  R3 is hydrogen, lower alkyl, or acyl; and  m is 1, 2, or 3;  or a pharmaceutically acceptable acid addition salt thereof. The invention relates further to a process for the preparation of the above compounds and their use as medicaments having antipsychotic and/or analgetic activity.
Patent CA-2018674-A1 (CA)
Inventor: NIKSA ANDREW J
IPC: H01M50/50
Filed: 1990-06-11
Abstract: METAL-AIR BATTERY WITH EASILY REMOVABLE ANODES                 Abstract of the Disclosure The present invention resides in a metal-air battery consisting of one or more cells.  Each cell comprises a cell frame.  An air cathode is attached to each face of the frame.  An anode blank is inserted through an access opening in the frame into the space between the cathodes. The anode blank comprises an elastomeric rubber labyrinth seal molded to the blank and sealing the access opening. Means may be provided for circulating electrolyte into and out of the spaces between the anode and air cathodes.  A preferred electrolyte is an aqueous solution of an alkali hydroxide.
Patent CA-2020023-A1 (CA)
Title: Transportable poultry plant cart and method of using
Inventor: MELHORN JOHN W
IPC: A01K31/07
Filed: 1990-06-27
Abstract: ABSTRACT     An easily transportable poultry or animal cart is construct-ed of a plurality of individual cages, each cage equipped with  a horizontally bifolding door at one end and a horizontally sliding door along an adjacent side.  The cages may be either permanently joined  during  construction or temporarily joined if  a  smaller cart or greater versatility is desired.  The cart is wheeled  for mobility.  The carts may be constructed as  "mirror  images,"  so that two  carts  may be joined together  with  their  respective bifold doors at opposite ends of the assembly, and their  respec-tive  sliding doors along a common side.  The dual set  of  doors allow a method of transporting animals wherein one set is used to load a plurality of animals into any single cage and  discourages the  escape of the previously loaded animals while the other  set permits the rapid unloading of all of the animals in each cage.
Patent CA-2020118-A1 (CA)
Title: Fire retardants and products produced therewith
Inventor: OBERLEY WILLIAM J
IPC: B27K3/34
Filed: 1990-06-28
Abstract: ABSTRACT    Improved fire retardant compositions, methods of making such compositions, and wood and other cellulosic products treated with such compositions which comprise a major amount of boric acid and a minor amount of (a) one or more synergist materials which, with boric acid, enhance the fire retardant properties of treated products as compared to boric acid or the synergist alone, and (b) optionally, one or more solubilizers which increase the water solubility of boric acid. The compositions are of substantially neutral pH and do not cause metal corrosion or acid hydrolysis or treated products.
Patent CA-2022898-A1 (CA)
IPC: H01M4/50
Filed: 1990-08-08
Abstract: A rechargeable non-aqueous secondary cell comprising a negative electrode; a positive electrode comprising a lithium-including manganese oxide as an active material, the lithium-including manganese oxide having a specific surface area measured by the BET method of 9.0m2/g to 67.5m2/g; and a separator interposed between the positive and the negative electrodes and impregnated with a non-aqueous electrolyte.    A rechargeable non-aqueous secondary cell comprising a negative electrode; a positive electrode comprising a lithium-including manganese oxide as an active material, grain sizes of which are substantially 20µm or less when observed  by  a  scanning  electron  microscope;  and  a separator  interposed  between  the  positive  and  said negative electrodes.
Patent CA-2025649-A1 (CA)
Title: Method for determining oil content of an underground formation
Inventor: SUPERNAW IRWIN R
IPC: G01N21/64
Filed: 1990-09-18
Abstract: METHOD FOR DETERMINING OIL CONTENT     OF AN UNDERGROUND FORMATION       (D#78,879-C1-F) ABSTRACT OF THE DISCLOSURE         The invention is a method of evaluating a sample of an underground formation to determine the hydrocarbon content of any hydrocarbons present in the formation.  It involves the steps of solvating a known volume of a sample in a known volume of a solvent which will solvate hydrocarbons, quantitatively measuring with a fluorometer the emission fluorescence below about 400 nanometers of the solvated sample at an excitation wavelength at which most petroleum compounds fluorescence, and determining the hydrocarbon content of any hydrocarbon present in the sample by comparing the emission fluorescence of said solvated sample to previous correlations.  The previous correlations are drawn between known hydrocarbon contents of samples and the emission fluorescence of the known samples in said solvent.          HJD pg:EX8L/48
Patent CA-2026116-A1 (CA)
Title: Process for the preparation of glycol ethers
Inventor: ATKINS MARTIN P
IPC: B01J21/10
Filed: 1990-09-25
Abstract: Case 7329(2) ABSTRACT OF THE DISCLOSURE           Process for the preparation of glycol ethers A process for the preparation of a glycol ether by reacting an olefin oxide with an alcohol over a catalyst; characterised in that the catalyst comprises a material which has been prepared by calcination of an anionic double hydroxide clay.
Patent CA-2030024-A1 (CA)
Inventor: WILKES ROBERT D JR
IPC: E21B7/18
Filed: 1990-11-15
Abstract: Hydraulic drilling method and apparatus in which the drilling fluid itself is utilized to control the direction in which a hole is bored in the earth. The drilling fluid is discharged through a plurality of forwardly facing nozzles which are inclined at different angles about the axis of the drill head, and the drilling fluid is selectively applied to the nozzles by a rotatable valve member to control the direction in which the hole is cut.
Patent CA-2035973-A1 (CA)
Title: Blank intended to form a packaging for a plurality of objects such as pots, and pack thus produced
Inventor: DE GUGLIELMO PASCAL
IPC: B65D71/46
Filed: 1991-02-08
Abstract: TITLE OF THE INVENTION       BLANK INTENDED TO FORM A PACKAGING FOR A PLURALITY         OF OBJECTS SUCH AS POTS, AND PACK THUS PRODUCED     ABSTRACT         Blank intended to form a packaging for grouping together and enveloping objects, such as flanged pots, and pack comprising such a blank. The blank consists of a flat cut-out made from cardboard or an equivalent material,  comprising  a plurality of  panels  mutually articulated about longitudinal lines of articulation, namely a base  panel  (8),  two  side  panels  (11,  12) articulated on either side of the base panel and to which are articulated two retaining panels, an outer one (15) and an inner one (16) respectively, which furthermore comprises at least one flap (24) which, on the one hand, is limited by a longitudinal line of articulation (25) with the inner retaining panel (16) which it adjoins, and a free opposite edge (18) and, on the other hand, defines at least one locking passage (26) intended for the flange and for retaining an object of a first row.            Figure 9.
Patent CA-2036245-A1 (CA)
Title: Process for biologically purifying waste waters
Inventor: STEIN THEODOR
IPC: C02F3/12
Filed: 1991-02-13
Abstract: Abstract:     Process for biologically purifying waste waters The invention relates to a continuous process by which waste water containing low to high concentrations of   organic   constituents   and   total   nitrogen   is biologically purified to such an extent that the organic constituents are minimized, the content of total nitrogen is completely nitrified, if it exceeds the assimilation demand, and the nitrate formed is reduced.       In this process, the expenditure on the oxygen introduction and the expenditure on the denitrification are minimized. The amount of excess sludge is extremely small.
Patent CA-2036327-A1 (CA)
Title: Thortveitite ore beneficiation
Inventor: BIRMINGHAM SCOTT D
IPC: C22B1/00
Filed: 1991-02-14
Abstract: A process for separation of the thortveitite from impurities in comminuted thortveitite containing ores by passing the comminuted ore through a non-uniform magnetic field to produce a thortveitite concentrate and a tailing comprising the non-magnetic impurities.
Patent CA-2037418-A1 (CA)
Title: Passive shutdown cooling system for nuclear reactors
Inventor: SPINKS NORMAN J
IPC: G21C15/18
Filed: 1991-03-01
Abstract: PASSIVE SHUTDOWN COOLING SYSTEM FOR NUCLEAR  REACTORS     ABSTRACT   A nuclear reactor system including a heat transport path around which a coolant is pumped by main circulation pumps to transport heat from the reactor core to a steam generator. A further decay heat removal path is connected in parallel with the steam generator and main pumps and has a heat exchange component located at an elevation such that a natural convection flow will occurin the decay heat removal path when the main pumps are shutdown. Means are provided to maintain a small flow in the decay heat removal path during normal operation of the main pump. That small flow is in the intended direction of the natural convection circulation flow and maintains a temperature difference within the decay heat removal path that provides a buoyancy force to immediately start a natural circulation flow if the main pumps are shutdown. The main pumps are to be shutdown, as is the reactor, on loss of the steam generator as a heat sink. Then the natural convection flow in the decay heat removal path ensures that theheat exchange component is immediately available as an alternate heat sink. The small flow, during operation, can be provided by an additional pump in the decayheat removal path or by bleeding a small flow from an appropriate position in this path.
Patent CA-2038381-A1 (CA)
Title: Gas separating asymmetric membrane
Inventor: KUSUKI YOSHIHIRO
IPC: C08G75/00
Filed: 1991-03-15
Abstract: A gas separating asymmetric membrane such as a gas separating asymmetric hollow fiber comprises an aromatic polyimide of which recurring unit is expressed by the formula (I):   (see Formula I) wherein A1 is a tetravalent unit at least 40 molar % of which has a diphenylhexafluoropropane structure, and A2 is a divalent unit at least 35 molar % of which is a divalent unit derived from a diaminobenzothiophene or a diaminodi-phenylenesulfone.
Patent CA-2038603-A1 (CA)
Inventor: SCOTT WILLIAM J
IPC: G01N27/26
Filed: 1991-03-19
Abstract: HEAVY METAL-FREE BUFFER FOR ION SELECTIVE ELECTRODE-BASED ASSAYS              Abstract of the Disclosure A heavy metal-free composition and its method of use in an ion selective electrode-based assay are disclosed.  The heavy metal-free composition includes a borate compound and an alkalinity adjusting compound, and is used to dilute a test sample; buffer the test sample; and substantially reduce the affects of interferents present in the test sample on the ion selective electrode-based assay.  The heavy metal-free composition and its method of use are especially useful in an ion selective electrode-based assay for carbonate ion concentration in a test sample, like blood serum, blood plasma, urine or cerebrospinal fluid.
Patent CA-2041423-A1 (CA)
Inventor: SEVEY DOUGLAS L
IPC: B25H3/00
Filed: 1991-04-29
Abstract: A case for an elongated tool such as a level or the like includes outer walls which cooperate to define an internal cavity into which the tool is placed.  Spaced indentations are provided along the length of the case, with the indentations extending around the entire periphery of the case.  Each indentation provides a supporting surface adapted for placement closely adjacent an outer surface of the tool, for maintaining the tool out of contact with the outer walls of the case.  An end cap encloses the open end of the case for securing the level therein, and indentations are formed in the end cap and in the end of the case for spacing the ends of the level inwardly from the end walls.  The level is cushioned by an air space between the outer surfaces of the level and the inner surfaces of the outer walls.
Patent CA-2046745-A1 (CA)
Title: Article including a container containing at least one precious stone
Inventor: NEUMAN ISAAC
IPC: A45C11/16
Filed: 1991-07-10
Abstract: ABSTRACT      The article includes a container containing at least one and preferably several precious stones. The envelope of the container includes a housing and a safety card or plate inte-gral with the housing so that the precious stone or stones contained in the container cannot be removed from the latter and that the safety card or plate cannot be separated from the remaining container without damaging the latter in a noticeable manner. The safety card or plate includes visible safety characters and an electronic chip that make it virtually impossible to falsify the safety card or plate. Said article is therefore suitable for use as a negotiable financial item.
Patent CA-2052736-A1 (CA)
Inventor: KOVACS LLOYD
IPC: B65B9/067
Filed: 1991-10-03
Abstract: A method of and apparatus for the production of packages each comprising a unit of product having opposite ends and a wrapper wrapped around the unit, the wrapper being wider than the length of the unit from end-to-end and initially extending outwardly beyond the ends of the unit, each end of the wrapper being folded over on said end of the product to form four closure flaps overlying said end, a first flap constituting a first side flap, a second flap constituting a first end flap, a third flap constituting a second end flap, and a fourth flap con-stituting a second side flap, the method of folding over the second end flap, wherein packages are fed forward one after another with the ends of the wrapper extending laterally outwardly at opposite sides of their path of travel, and the second end flaps are folded over at both ends of the package by flexible folding members which are brought into engagement with the trailing side of the trailing portion of each extending end of the wrapper and moved forward at higher speed than the speed of the package.
Patent CA-2054549-A1 (CA)
Inventor: EIDE DONN C
IPC: F02M17/50
Filed: 1991-10-30
Abstract: A carburetors drain apparatus, particularly suited for two stroke internal combustion engine applications.  The drain apparatus diverts fuel contaminants away from the fuel jets to a remotely located sediment collector.   The collector retains the accumulated contaminants until drained.
Patent CA-2057301-A1 (CA)
Title: Static dissipative laminate
Inventor: O'DELL ROBIN
IPC: B32B5/02
Filed: 1991-12-09
Abstract: A static dissipative laminate consistently having an internal resistance less than 2 x 10 6  and a resistance to ground measurement of about 5 x 10 6 and a surface resistance in the static dissipative range even at a very low humidities is produced by the use of an ionic salt and an humectant in the overlay and further by the use of a special top core sheet containing 0.6-1.0% by weight of carbon fibers.
Patent CA-2058906-A1 (CA)
Title: Spinal stereotaxic device
Inventor: PAUL KAMALJIT S
IPC: A61B90/11
Filed: 1992-01-07
Abstract: Abstract of the Disclosure A stereotaxic device for directing a punc-turing tool toward a designated target within a pa-tient.   A tool guide is provided for directing the puncturing tool toward the target, and a positioning device for positioning the tool guide anywhere on a hemispherical surface from which to direct the punc-turing tool toward the target.  The positioning device includes an arcuate slider associated with the tool guide, with the designated target at the center of the arc of the slider.  A rotator is slidably connected to the arcuate slider for permitting the arcuate slider to slide while maintaining the tool guide at the hemi-spherical surface.  Adjustments are permitted by the following structure to the position of the rotator along mutually perpendicular X, Y and Z axes with re-spect to the designated target, that rotator being journaled for rotation about one of the axes.  A pair of guide rails are affixed to a rectangular base plate.  A pair of support columns are slidably con-nected at one end to a respective one of the guide rails to permit sliding movement therealong.  Y-axis controls change the distance between the opposite end of the support columns and the base plate.  Horizontal slider rods connect together the support columns at the opposite ends, and slidably carry the rotator. Targeting devices are provided for positioning the support columns, rotator and transfer slider so that the tool guide always guides the puncturing tool to the designated target.
Patent CA-2059764-A1 (CA)
Inventor: LINDSEY RAYMIE H
IPC: A61F2/16
Filed: 1992-01-21
Abstract: A method for attaching a polymethylmethacrylate haptic having a colored core to an optic of an intraocular lens, containing the steps of providing the periphery of the optic with a pair of intersecting holes, inserting an end of the haptic into one hole, inserting an end of an polymethylmethacrylate anchor strand having a colored core into the second hole so that the end of the anchor strand and the end of the haptic intersect, aiming a laser capable of a transmitting energy of a visible wavelength at the intersection of the first and second holes, firing the laser through the optic at the point of intersection of the end of the haptic and the end of the anchor strand, wherein the optic transmits, but essentially does not absorb, the laser energy and the core the anchor strand and the core of the haptic absorb a portion of the laser energy sufficient to fuse the end of the anchor strand and the end of the haptic at their point of intersection.
Patent CA-2060180-A1 (CA)
Title: Laser
Inventor: HILL PETER C
IPC: H01S3/225
Filed: 1990-09-06
Abstract: It has been discovered that short-lived dimer ions are created in a noble gas under high energy conditions, such as during an electrical discharge. These noble gas dimer ions have excited energy states which make them suitable for use as the gain medium in a laser. A laser created using noble gas dimer ions as the gain medium exhibits a high degree of efficiency, is tunable over a broad range of wavelengths, and may be capable of being operated continuously.
Patent CA-2065640-A1 (CA)
Title: Polyamide resins and their use in relief printing
Inventor: DRAWERT MANFRED
IPC: C08G69/34
Filed: 1992-04-09
Abstract: ABSTRACT            Polyamide Resins and Their Use in Relief Printing The invention relates to polyamides based on mixtures of acids, amines and amino acids and to their use in making non-yellowing relief prints in particular
Patent CA-2066463-A1 (CA)
Title: Edge strip
Inventor: WEBB WAYNE K
IPC: C25C7/02
Filed: 1992-04-21
Abstract: The invention relates to an edge strip for a cathode plate. The edge strip comprises a non-inflatable elongate body of a thermoplastic material which body includes a longitudinal opening to accommodate an edge of the cathode plate and at least one continuous longitudinal internal groove on an inside surface of the opening.