baber/WOPTO huggingface dataset:
Patent CA-2006533-A1 (CA)
Title: Method for the determination of the plasminogen activator activity in samples containing alpha-2-antiplasmin
Inventor: STIEF THOMAS
IPC: G01N33/86
Filed: 1989-12-22
Abstract: A method for the determination of plasminogen activators in biological fluids which may contain antiplasmin is described and entails use of proteolytically degraded plasminogen.
Patent CA-2006916-A1 (CA)
Inventor: BARTKY WALTER S
IPC: B41J2/045
Filed: 1989-12-29
Abstract: A method for testing body components of pulsed droplet deposition apparatus comprises applying a variable frequency voltage to the electrodes of each of a number of selected channel wall elements (24). The resulting impedance variations are used to determine the natural frequencies of the selected wall elements which, in turn, are used to determine whether the compliance ratios of the selected wall elements and the droplet liquid to be used therewith lies within a desired range of values.
Patent CA-2008071-A1 (CA)
Title: Pump bus to avoid indeterminacy in reading variable bit field
Inventor: WATTERS JEFFREY S
IPC: G06F13/42
Filed: 1990-01-18
Abstract: PUMP BUS TO AVOID INDETERMINACY  IN READING VARIABLE BIT FIELD                             ABSTRACT      A data field having a variable number of zero-level bits is read by a bus in a digital system, wherein the bus is pumped by writing all logical "one" bits onto the bus lines just before they are read.  The unused bits will then be still in a logical "one" state, i.e. a known value, rather than floating or at an indeterminate value. A program for performing this operation in a computer uses steps to prevent other operations such as refresh cycles or interrupts from being interposed between the write and read cycles.  A CPU may use this method to read a system identifier value upon boot-up, for example.
Patent CA-2008571-A1 (CA)
Inventor: SABB ANNMARIE L
IPC: C07D471/04
Filed: 1990-01-25
Abstract: Abstract of the Disclosure The compound of the formula:                   in which R1 is hydrogen, alkoxy, cyano, halo, nitro, amino, or mono- or dialkylamino; R2 is hydrogen, alkyl, phenyl, benzyl, 2-thienyl, 3-thienyl or 2-, 3- or 4-pyridinyl; R3 is hydrogen, alkyl or phenyl; R4 is N-methyl-pyrrolidin-2-yl, 2-, 3- or 4-pyridinyl, 3-quinuclidinyl or   where n is 1 to 5; m is 0 to 3; and R8 is hydrogen or alkyl of 1 to 6 carbon atoms; or R4 is   wherein: a) n is 2, R5 taken with R3 is ethylene and R6 is -CHO, alkyl, unsubstituted or substituted phenyl, pyrimidinyl, pyridinyl, or pyrazinyl, where the substituents are alkyl, alkoxy, halo, cyano, nitro or trifluoromethyl; b) n is 1 to 5, and R5 and R6, taken together are polymethylene which may be alkyl substituted or R5 and R6 aremorpholino, 3-azabicyclo[3.2.2]nonan-3-yl, pyrrol-1-yl, pyrrolidin-1-yl, pyrrolidin-2-on-1-yl, pyrrolidin-2-thion-1-yl, imidazol-1-yl, alkyl-piperidin-1-yl or a piperazin-1-yl moiety in the 4-position of which is hydrogen, -CHO, alkyl or unsubstituted or substituted phenyl, pyrimidinyl, pyridinyl, or pyrazinyl, alkoxy, halo, cyano, nitro or trifluoromethyl; or c) n is 1 to 5, and R5 and R6 are, independently, hydrogen, alkyl, phenyl, 3-quinuclidinyl, 2-adamantyl, bicyclo[3.2.1]octan-2-yl, bicyclo[3.3.1]nonan-9-yl or 2-, 3- or 4- pyridinyl; or a pharmaceutically acceptable salt thereof are M1 receptor agonists useful in treatment of dementias involving the cholinergic system.
Patent CA-2009324-A1 (CA)
Title: Anion exchange membranes
Inventor: SCOTT GRAHAM W
IPC: C08J5/22
Filed: 1990-02-05
Abstract: ABSTRACT       ANION EXCHANGE MEMBRANE        Anion exchange membranes which are derived from aryl ether polymers wherein at least a portion of the aromatic rings are bound into the polymer backbone by two ether linkages and which bear a defined sulphonamide substituent are more chemically stable than conventional anion exchange membranes and may be used in electrodialysis systems.
Patent CA-2011602-A1 (CA)
Title: Flue control device
Inventor: HAGAN GRANT E
IPC: F24C15/32
Filed: 1990-03-06
Abstract: A device for adjustably restricting the flow of exhaust gases in a furnace flue to conserve fuel is disclosed. It comprises two interlocking pipe sections and a helical element having one end fixed to the inner surface of each pipe section. The helical element has a circular opening along its central axis. The degree of restriction provided by the device is adjusted by twisting or separating the two pipe sections.
Patent CA-2016079-A1 (CA)
Title: Adjustable table
Inventor: ALLARD DAVID D
IPC: A47B9/20
Filed: 1990-05-04
Abstract: ABSTRACT OF THE DISCLOSURE A table adapted to be used as a coffee table having a top, all or part of which can be raised and moved laterally on struts forming a part of the legs of the table.  The raised and moved portion is moved to a position where it can be used as an ordinary table for writing or the placement of food.  The struts are slidable in the portion of the table used as legs and include alternate devices to support the raised part.
Patent CA-2016403-A1 (CA)
Title: Cooking appliance interface
Inventor: KOETHER BERNARD G
IPC: G05B19/042
Filed: 1990-05-09
Abstract: Abstract of the Disclosure An interface suitable for use with a cooking computer communication system and preferably mounted on each of cooking appliances such as a baking oven, cooling unit or fryer.  The interface monitors the physical characteristics of the cooking appliance through analog or digital sensors and provides information for diagnostics and quality control by a local store computer or a remote corporate mainframe computer.  The interface includes a microcomputer responsive to a plurality of signals representing parameters of the cooking appliance for developing a multiplexed digital output signal representing the parameters for applying the output signal by a two-wire cable to a cooking computer communication system.
Patent CA-2018816-A1 (CA)
Title: Cooling fan with reduced noise for variable speed machinery
Inventor: NELSON DAVID A
IPC: H02K9/06
Filed: 1990-06-12
Abstract: A centrifugal fan for ventilated rotating machinery is provided having tapered fan blades to reduce sound pressure levels generated by fan operation over a wide speed range.  The tapering of the fan blades keeps the cross-sectional area of each flow channel substantially constant as the air flows radially through the fan, resulting in a less turbulent flow.  Each fan blade may include a height profile having a tapered segment in which blade height decreases in proportion to increasing radial distance from the central axis of the fan.
Patent CA-2019646-A1 (CA)
IPC: B22D17/24
Filed: 1990-06-22
Abstract: This disclosure concerns a casting die for a cylinder, including engine blocks having a plurality of cylinders such as for internal combustion engines, including an expendable core for forming a jacket around the cylinders. This core has a printout portion at one end of the cylinder which is held in place by a cooperating flange on a mandrel that fits inside the cylinder. This mandrel may hold a liner for the cylinder. A dowel is provided in one of the die parts for insertion into the hollow mandrel. The mandrel is held in position by being clamped between the two opposing die parts, and the flanges of the core printout portion may be loosely held in the printout cavity of one of the die parts which preferably also contains one or more locating pins for bridging at least part of the gap between the printout portion and the printout cavity in the die for better positioning the core in the die. The core and mandrel may be assembled outside the die before being placed on the dowel, and after the casting is made, the mandrel and core are removed with it and then separated so the mandrel can be reused. For forming plural cylinders in an engine block, a secondary mandrel frame may be employed for further supporting the separate mandrels for each cylinder and the plural cylinder expendable core by holding the flanged printout portion of the core between the flanges on the separate mandrels and the secondary mandrel frame. In casting the plural cylinders of a V-engine block, retractable dowels permit the employment of die parts and slides that move only at right angles to each other.
Patent CA-2020588-A1 (CA)
Inventor: YAGI KIYOSHI
IPC: H01T13/46
Filed: 1990-07-06
Abstract: A high tension cable device with a series gap wherein an extraordinary discharge such as a creeping discharge which may occur along an outer face of a glass tube of a discharge tube is prevented effectively and a process of producing the same are disclosed.  The high tension cable device comprises an electrically insulating tubular casing and a connecting terminal for the connection to a terminal of an ignition plug of an engine.  The connecting terminal is fixedly fitted in the inside of an end portion of the casing, and a high tension cable is fitted in the other end portion of the casing.  An additional function part such as a discharge tube for the formation of a series gap is mounted in the inside of the casing and coupled at an end thereof to the connecting terminal and at the other end thereof to the high tension cable, and an electrically insulating resin material is filled in a spacing in the inside of the casing.
Patent CA-2021258-A1 (CA)
Inventor: KASHIWADA AKIO
IPC: C25B13/08
Filed: 1990-07-16
Abstract: A highly stable cation exchange membrane for use in the electrolysis of an alkali metal chloride is disclosed, which comprises a reinforced base membrane comprised of at least one layer of a fluorocarbon polymer and a reinforcing woven fabric encapsulated therein and a coating disposed on at least one surface of the reinforced base membrane, the coating comprising particles of at least one inorganic material selected from the group consisting of oxides, nitrides and carbides of elements belonging to group IV of the periodic table, which particles have an average primary particle diameter as small as from 0.01 to 0.2 µm, and a binder polymer.  In the cation exchange membrane, the coating containing particles of an inorganic material, uniformly and strongly adheres to the surface of the rein-forced base membrane, so that the inorganic material can remain in the coating for a prolonged period of time.          Accordingly, by the use of the cation exchange membrane, the electrolysis of an alkali metal chloride can be stably performed at an advantageously low cell voltage for a prolonged period of time.
Patent CA-2023317-A1 (CA)
Title: Calibrating process for a pulse responsive flowmeter
Inventor: FOND ANDRE
IPC: A61M1/16
Filed: 1990-08-15
Abstract: The calibration method for a flowmeter (7 ; 8) supplying an electrical signal in the form of pulses (S) whose frequency corresponds to the flow rate of a fluid flowing in a circuit consists in: 
 
  - measuring, during a data acquisition phase of predetermined duration (Ta), each elementary time (T7(i) ; T8(i)) separating two pulses which are separated by a predetermined measuring step (P), 
  - counting the number of pulses (n ; m) transmitted during the acquisition phase (Ta), 
  - and computing the mean calibration period (Tm7 ; Tm8) by finding the ratio of the sum of the elementary times (T7(i) ; T8(i)) to the number of pulses counted (n ; m). 
 
<??>Application to measuring the flow rate of a liquid in a dialysis liquid circuit. 
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Patent CA-2023511-A1 (CA)
IPC: B65G21/18
Filed: 1990-08-17
Abstract: ABSTRACT OF THE DISCLOSURE      A conveyor belt has a textured edge for use in a spiral conveyor which includes a plurality of protrusions on the edge of the belt engaging the capstan, providing enhanced friction between the belt and the capstan.  The protrusions may be placed on end links or reenforcement links, and may be a part of rods connecting links of the belt.  In one of the embodiments, the capstan is textured as well to provide an additional friction.  As the result, the driving force is transmitted to the belt much more efficiently, and the practical use of the plastic conveyor belt in the spiral conveyor systems is possible.  In one of the embodiments, the conveyor belt is made predominantly of plastic.
Patent CA-2024173-A1 (CA)
Inventor: GREENE SIDNEY R
IPC: G01S1/70
Filed: 1990-08-28
Abstract: An improved beacon assembly 30 for use with a beacon 34 for providing radiant energy.    The invention 30 includes a single plate 32 having an open interior to provide a frame through which the radiant energy from said beacon 34 may pass and apparatus 36 for mounting the plate 32 and the beacon 34 to the missile 10.     In a more specific embodiment, the plate 32 is constructed of aluminum and has arcuate inner 42 and outer 44 peripheries connected by substantially straight sections 46 and 48 to provide a pie shape with a pie shaped piece removed from the small end thereof to provide a frame through which the radiant energy from the beacon 34 may pass.     The improved beacon assembly of the present invention 30 affords a low cost lightweight retrofit of existing missiles with a thermal beacon 34.
Patent CA-2025729-A1 (CA)
Inventor: SCHMIDT HANNS-LUDWIG
IPC: H01J49/04
Filed: 1990-09-19
Abstract: The invention comprises an on-line mass spectrometric method and apparatus for the determination of the isotopic composition of at least oxygen, hydrogen and nitrogen in a compound or mixture of compounds. A mixture contained in syringe 6 is injected through injector 7 on a chromatographic column 1. Compounds eluting from the column 1 pass into a catalytic reactor 14 (typically a platinum\rhodium capillary tube containing elemental carbon and maintained at 1200°C) and are decomposed to produce carbon monoxide, molecular nitrogen, and molecular hydrogen. These gases are analyzed by an isotope-ratio mass spectrometer 4 so that the isotopic composition of the oxygen, nitrogen and hydrogen comprised in the original compound can be determined. A second chromatographic column 24 may be provided to separate carbon monoxide and nitrogen before they are passed into the spectrometer 4, thereby allowing a low resolution spectrometer to be used for the analysis of both gases at m/e 28 daltons.
Patent CA-2027000-A1 (CA)
Inventor: RONEY J PAUL S
IPC: G16H10/60
Filed: 1990-10-05
Abstract: ABSTRACT              A method of operating a point-of-care terminal comprising: establishing a specific patient related electronic kardex formed of data signals defining a group of individual patient care events, each care event being defined by a predetermined collection of possible attributes each attribute defining a characteristic of the event, displaying the care events with the selected attributes at a point-of-care terminal, whereby an individual care program specific to the patient is displayed to a care giver.
Patent CA-2028639-A1 (CA)
Title: Low-noise active fiber optical amplifier with pumping power reflector
Inventor: GRASSO GIORGIO
IPC: H01S3/10
Filed: 1990-10-26
Abstract: An optical, low-noise amplifier of the active-fiber type, which fiber contains a laser light emitting substance, adapted to be connected to an optical telecommunication fiber and receiving light therefrom at  the transmission wavelength.  The active fiber is also fed from a light source at a pumping wavelength and has a length corresponding to a partial absorption of the pumping light.  Downstream of active fiber, there is a selective mirror device which reflects the light at the pumping wavelength and is transparent to the transmission wavelength light.  Preferably, the mirror device consists of an optical demultiplexer adapted to separate the transmission wavelength and the pumping wavelength on two output fibers.  A mirror which reflects the pumping wavelength is present at the end of the fiber carrying the pumping wavelength.
Patent CA-2030171-A1 (CA)
Title: Roof
Inventor: HIRAI TAKASHI
IPC: E04D13/18
Filed: 1990-02-23
Abstract: ABSTRACT         Eaves and gable parts of at least one roof surface are roofed with usual roof members (2), and a central part enclosed with the roof members (2) is roofed with lighting frames (B) serving as solar energy collection roof members.  Waterproof walls (255,256) formed on the side edges of each roof member (2) are respectively received in roof member receiving spaces (280, 281) of each connecting member (273), and the upper and lower ends of a longitudinal sash member (160) of each lighting frame (B) are received in an upper-part adjusting space (92') of a connecting member cover (D or D') and a fit groove (88) of a connecting member (A or A') to absorb the dimensional error in width of the roof and the thermal expansion.  A mounting member (309) and a ridge opening adjustment member (310) of a ridge opening filling-up unit (308) fitted to each other relatively slide.  Further, light-transmitting sheets (14) of the lighting frames (B) mounted adjacent to each other in the eaves-ridge direction are overlapped to each other to enlarge the light collection area, and a light-transmitting sheet support sash member (420) provided separately from the longitudinal sash member (160) of the lighting frame (B) is mounted obliquely on the inner surface of the longitudinal sash member (16) so as to correspond to a difference between the pitch of the roof and that of the light-transmitting sheet (14).
Patent CA-2030560-A1 (CA)
Inventor: MATZNER MARKUS
IPC: C08G65/40
Filed: 1990-03-28
Abstract: The invention describes a novel process for the preparation of polycarbonate and/or polyarylate block copolymers with poly(aryl ethers). The process is comprised of steps: (a) the reaction of a dihydroxy-terminated poly(aryl ether) oligomer with a high molecular weight polycarbonate, or a high molecular weight polyarylate, or a high molecular weight poly(arylate-carbonate) to yield a block copolymer; followed by (b) the coupling of the material obtained in step (a) to the required molecular weight, us-ing a diaryl ester of carbonic acid or of a dicarboxylic acid. Both steps are performed in the presence of a catalyst. The copolym-erizations can be run in bulk under vacuum in a single or twin screw extruder. Using the above conditions high molecular weight, high quality block copolymers having a combination of excellent properties are obtained in a matter of minutes.
Patent CA-2031182-A1 (CA)
Title: Tip-ring short detector and power shut-down circuit for a telephone line circuit
Inventor: PATEL LALIT O
IPC: H04M3/08
Filed: 1990-11-29
Abstract: A TIP-RING SHORT DETECTOR AND POWER SHUT-DOWN CIRCUIT FOR A TELEPHONE LINE CIRCUIT                          ABSTRACT A  short detector and shut-down circuit is disclosed, for securing feed current to a subscriber loop when abnormal loop conditions are detected.  The short detector and shut-down circuit of the present invention includes a tip and ring drive amplifier circuits connected to the tip lead and ring lead respectively, of the subscriber loop.  The tip and ring lead amplifier circuits are arranged to convert feed voltage from a central office battery to tip and ring feed currents on the subscriber loop.  Each of the tip and ring drive amplifier circuits further include a feed current shut-down circuit arranged to interrupt the feed current developed by their respective amplifier circuit.  A common-mode sensing circuit connected to the tip and ring leads is arranged to sense the voltage dropped across the subscriber loop and develop an output voltage of a specific magnitude when an abnormal loop condition is sensed.  A detector circuit connected to the common-mode sensing circuit receives the output voltage from the common-mode sensing amplifier circuit and compares the output voltage of the common-mode sensing circuit to a predetermined threshold voltage.  The detector circuit outputs a control signal to the tip and ring feed current shut-down circuits when the output voltage crosses into the predetermined threshold voltage range, causing the tip and ring feed current shut-down circuits to shut down the tip and ring drive amplifier circuits, thereby, suspending the tip and ring current fed to the subscriber loop.
Patent CA-2032054-A1 (CA)
Inventor: FURUYA NOBUAKI
IPC: H01S3/08
Filed: 1990-12-12
Abstract: A laser apparatus comprises an optical resonator including first (2) and second mirrors (3), and laser medium (1).  A wavelength selection element (6) is provided in the resonator for narrowing band-width.  A polarizing conversion element (4) for changing ratio of S to P components and polarizing beam splitter (5) are provided for amplifying laser beam to output after wavelength selection and for reducing light load of the wavelength selection element (6).  The polarizing conversion element (4) is provided in the resonator light path.  In another embodiment, the polarizing conversion element (4) is provided in a branch light path formed by a second polarizing conversion element and a third mirror (88), where the second polarizing conversion element reflects and transmits P component at a given ratio and reflects S component.  The wavelength selection element comprises a Fabry-Perot etalon, grating, or prism.  The polarizing conversion element comprises a quarter-wave plate or a phase retarder mirror. The polarizing beam splitting element comprises a polarizing beam splitter or polarizing beam splitting prism.  Such laser apparatus is suited for an exposure light source for photolithography.
Patent CA-2032687-A1 (CA)
Title: Windshield wiper blade
Inventor: WALDER JAMES F
IPC: C08L83/04
Filed: 1990-12-19
Abstract: WINDSHIELD WIPER BLADE                 Abstract of the Disclosure The wiper blade is made from an elastomeric composition which contains a fluorocarbon polymer as an essential ingredient therein.  The elastomeric composition comprises: 100 parts by weight of rubber composition (phr); 0 to 60 phr of filler; 0 to 25 phr of inorganic base; and 0 to 5 phr of processing aid; the rubber composition being made up of 50 to 0 100 phr of a fluorocarbon polymer and 50 to 0 phr of a non-fluorocarbon polymer.  Such a blade is found to have improved wear.
Patent CA-2032862-A1 (CA)
Inventor: GIANGERO STANLEY C
IPC: G01V3/28
Filed: 1990-12-20
Abstract: High resolution induction logs (28) are obtained through borehole casing (15) by magnetically saturating the casing (15), logging with a tool (10) having different transmitter (35a, 35b)-to-receiver (40) coil spacings, and determining the formation (30) conductivities as a function of the coil spacings, coil frequency, and phase difference between the signals at these spacings. The logging is preferably done at an intermediate frequency which gives good resolution but is little affected by the saturated casing.
Patent CA-2035747-A1 (CA)
Title: Y-tag
Inventor: ST-PIERRE YVES
IPC: G09F9/00
Filed: 1991-02-06
Abstract: RECOMMENDED FORMS            (as. 21.31.34 AND 142) ABSTRACT           This invention describes the use of a mechanical device with selectable labels affixed to a movable plate.  It is intended as a replacement for conventional labelling and identification using cards, markers, tags, flags etc. The mechanism allows the visible portion of the label to be viewed in the upright position without further handling by the viewer.  The addition of an embossed decal permits the tag to be set by feeling the shape of the symbols.         Adding a second disk and decal increase the capability of the device to a two character\symbol label or a counter in the case of numbered decals.