baber/WOPTO huggingface dataset:
Patent CA-1312543-C (CA)
Title: Agents for combating bark beetles
Inventor: VITE JEAN P
IPC: A01N31/06
Filed: 1985-12-09
Granted: 1993-01-12
Abstract: Abstract The invention relates to agents and processes for combating bark beetles, particularly Dendroctonus genera, using mixtures of pheromone components which have an inhibitory or attractant effect.
Patent CA-1276978-C (CA)
Title: Pwm inverter
Inventor: CAPUTO WILLIAM R
IPC: H02M7/5387
Filed: 1986-02-06
Granted: 1990-11-27
Abstract: 23                  52,068 ABSTRACT OF THE DISCLOSURE A PWM inverter in which the maximum three-phase RMS  pole-to-pole  output  voltage  is  increased,  to  more efficiently utilize a fixed DC power supply, by generating substantially sinusoidal changing pole voltages having no values within predetermined zones adjacent to each power supply limit, and by switching each pole voltage to a power supply  limit  for  a  predetermined  number  of  electrical degrees during each half cycle,  resulting in step changes in  the  pole  voltage  waveforms  from  the  substantially sinusoidal changing waveform to a fixed power supply limit.
Patent CA-1279364-C (CA)
Title: Open-loop brushless motor control system
Inventor: ANGI DONALD F
IPC: H02P6/08
Filed: 1986-09-30
Granted: 1991-01-22
Abstract: OPEN-LOOP BRUSHLESS MOTOR CONTROL SYSTEM            Abstract of the Disclosure The speed command for an open-loop brushless motor speed control system is overridden whenever the speed of the motor is less than a relatively low reference speed in order to quickly accelerate the motor to a running speed, despite a relatively low speed command.  In the event of a motor overcurrent condition, the override is itself overridden to protect the controller.
Patent CA-1291765-C (CA)
Title: Antimicrobial agents and process for their manufacture
Inventor: DEGENHARDT CHARLES R
IPC: A61K8/00
Filed: 1986-11-03
Granted: 1991-11-05
Abstract: ANTIMICROBIAL AGENTS AND PROCESS               FOR THEIR MANUFACTURE            ABSTRACT OF THE DISCLOSURE     Disclosed are tetraalkyl enthenylidenebisphosphonates and a method for their manufacture. These compounds are suitable for use as antimicrobial agents in combating a number of pathogenic microorganisms, such as bacteria, yeasts, viruses, fungi and protozoa, when used together with a pharmaceutically-acceptable carrier. Also disclosed is a method for treating infectious diseases by administering a safe and effective amount of these tetraalkyl ethenylidenebisphosphonates.
Patent CA-1275483-C (CA)
Title: Centrex attendant console interface
Inventor: BLACK JAMES B
IPC: H04Q11/06
Filed: 1986-12-16
Granted: 1990-10-23
Abstract: A CENTREX ATTENDANT CONSOLE INTERFACE       ABSTRACT OF THE INVENTION An interface circuit for transmitting data and voice signals between a CENTREX equipped central office exchange and a remotely located attendant console.  The interface circuit includes an analog interface arranged to receive analog voice signals from the attendant console and to convert the analog signals into digital signals for transmission to the central office exchange.  Alternatively, digital signals received from the central office exchange are converted to analog voice signals and are transmitted to the attendant console.  A digital interface connecting the attendant console and the central office exchange includes an interface controller arranged to control the operation of the digital interface.  The digital interface further includes input data storage means for storing digital data transmitted by the central office exchange, output data storage means for storing digital data transmitted by the attendant console and serial transmission/receiving means for transmitting and receiving the digital data transmitted and received between the interface circuit and the attendant console.  Responsive to control signals from the central office exchange, control data written to the input data storage means is processed by the interface controller and transmitted to the attendant console via the serial transmission/receiving means.  Similarly, responsive to control signals from the interface controller, data processed and written to the output data storage means is read by the central office exchange.
Patent CA-1283054-C (CA)
Title: Antimycotic nail varnish
Inventor: BOHN MANFRED
IPC: A61K8/00
Filed: 1986-12-18
Granted: 1991-04-16
Abstract: Abstract:          A composition for use as a nail enamel comprising a water-insoluble film-forming substance and an antimycotic compound which is a 1-hydroxy-2-pyridone I of the general formula    (I) in which R1 is a hydrocarbon group which contains from 6 to 9 carbon atoms, but is free from olefinic and acetylenic bonds, one of the groups R2 and R4 is hydrogen and the other is hydrogen, methyl or ethyl and R3 is alkyl having up to two carbon atoms, said anti-mycotic ingredient being present in free form or in the form of a salt.
Patent CA-1272500-C (CA)
Title: Two piece variable stator for sprinkler nozzle flow control
Inventor: COCHRAN WILSON V
IPC: B05B15/10
Filed: 1987-02-09
Granted: 1990-08-07
Abstract: TWO PIECE VARIABLE STATOR FOR SPRINKLER NOZZLE FLOW CONTROL Abstract of the Disclosure A variable stator for use in a sprinkler head has a two piece stator housing which includes flexible inner sidewalls overlying spaced apertures in an outer side-wall. The stator housing includes a plurality of drive ports which pass a controlled portion of the fluid flow against an impeller that is part of the drive mechanism for rotating the nozzle of the sprinkler head. The inner sidewalls flex inwardly as a function of fluid flow around the stator relative to the controlled fluid flow to the impeller to selectively open the apertures to keep the rate of rotation of the sprinkler nozzle relatively constant. By locating the impeller within the stator, upstream of the remaining fluid flow around the stator and through the spaced apertures, wear on the impeller is minimized. In addition, turbulence through and around the stator is minimized to further reduce wear and for increased fluid flow control.
Patent CA-1318257-C (CA)
Inventor: LAILACH GUENTER
IPC: B01D29/50
Filed: 1987-03-02
Granted: 1993-05-25
Abstract: Process for the separation of solids from suspensions having a high solids content ABSTRACT OF THE DISCLOSURE      Solids can be effectively separated from liquid/ solid suspensions having a high solids content by dis-continuous filtration in a pressure filter wherein the suspension to be filtered is first placed in a pressure container, the suspension is then delivered pneumati-cally under pressure from the pressure container into a pressure filter wherein filtration causes a solid-liquid separation, then pressure gas is delivered in the filter removing moisture from the filter cake and for-cing the unfiltrated suspensions to flow back to the pressure container and filtered solids are recoverd.     Le A 23 833
Patent CA-1289872-C (CA)
Title: Reversible immobilization of assay reagents in a multizone test device
Inventor: WOODRUM DAVID L
IPC: G01N33/543
Filed: 1987-03-04
Granted: 1991-10-01
Abstract: ABSTRACT OF THE DISCLOSURE A multizone test device for the determination of analyte in a liquid test medium. The test device preferably comprises multilayers including a first layer comprising a solid, porous matrix incorporated with a reversibly immobilized first reagent and a second layer comprising a solid, porous matrix incorporated with a second reagent which interacts with the first reagent and analyte from the liquid test medium to provide a detectable signal. A reversible binding interaction between the first reagent and the matrix of the first layer prevents the first reagent from prematurely migrating into the second layer during manufacture of the device and prior to application of the liquid test medium to the test device. The reversible binding interaction is sufficiently disruptable by contact of the first layer with the liquid test medium to release and thereby render diffusible an analytically effective amount of the first reagent within the test device.
Patent CA-1297430-C (CA)
Title: Process for obtaining chemically defined and reproducible polydeoxyribonucleotide
Inventor: FEDELI GIANFRANCO
IPC: C07H21/04
Filed: 1987-04-15
Granted: 1992-03-17
Abstract: "A  process   for   obtaining   chemically   defined   and   reproducible polydeoxyribonucleotides"           ABSTRACT By carrying out the  depolymerization of stabilized  solutions of  highly polymerized and  nicked  polydeoxyribonucleotides,  as  obtained  through stabilizing aggregation of raw nucleic acids, the depolymerization  being carried out by heating at controlled temperature and being controlled  as a function of the variation  of the reversible hyperchromicity,  followed by the removal of the hydrogen bonds in the double stranded filaments and by thermal stabilization of the single stranded filaments, the polydeoxy-ribonucleotide, known as  Defibrotide is  obtained. Defibrotide  has  the following formula of random sequence:          P1-5,(dAp)12-24, (dGp)10-20, (dTp)13-26, (dCp)10-20, wherein P-phosphoric radical dAp= deoxyadenylic monomer dGp= deoxyguanylic monomer dTp= deoxythymidylic monomer dCp= deoxycytidylic monomer and has well defined chemico-physical properties, reproducible in the in-dustrial production.
Patent CA-1284138-C (CA)
Inventor: ARAKI YOZO
IPC: B65B51/14
Filed: 1987-05-19
Granted: 1991-05-14
Abstract: ABSTRACT OF THE DISCLOSURE           The present invention provides an apparatus for filling bags with a material and for sealing them, comprising: a pair of chain conveyors disposed in parallel vertical planes; grippers for bags held on said chain conveyors; nozzles for sealing openings of said bags gripped by said grippers and for intro-ducing compressed air thereinto; a pressure detecting device for measuring the pressure within said bags; filling devices for filling said bags with the material; and control means for receiving an output from said pressure detecting device and for controlling said filling devices thereby.
Patent CA-1336182-C (CA)
Inventor: KROMAN FLEMMING
IPC: B65D33/17
Filed: 1987-05-28
Granted: 1995-07-04
Abstract: The closing of tubular casings containing foodstuffs by mounting a binder on a constriction of the casing involves the traditional problem of a high waste percentage due to the binders either damaging the casing material or sliding off the constriction. A method and a binder are disclosed which makes it possible to obtain a very strong clamping of the binder without damaging the casing material, and in connection with tight plastic casings it is even possible to hereby provide a "super tight"  closure, viz. by arranging the constriction with an oblong cross section between opposed straight clamping beams, which are forced together so as to produce a controlled deformation flowing of the material.
Patent CA-1327789-C (CA)
Title: Drilling system
Inventor: MOHN FRANK
IPC: E21B47/12
Filed: 1987-06-30
Granted: 1994-03-15
Abstract: ABSTRACT     A drilling system comprises a drill string (1) incorporating inbuilt tubular conductors (25), a mud supply passage, and passages for protective or other fluids.   The drill string can be advanced by selectively actuable pistons  (51,60) exposed to drilling mud flow, by electrically driven traction units (71,74) engaging the drill hole wall or by a linear electric motor element (82) co-operating with a drill hole casing (24), which can be moved thereby relative to the drill string.  The drill bit (106) of the drill unit is driven rotatably by an electric motor (111,112) or reciprocably by a linear electric motor (125).   The drill unit can be of two relatively slidable parts, with fluid pressure, which may be generated within the unit (189) axially loading the drill bit.  Drilling forms can be resisted by clamps (129) clamping the unit and/or the drill string to the drill hole wall.   The drilling direction can be adjusted by means of these clamps.
Patent CA-1282686-C (CA)
Title: Annular wellhead seal
Inventor: TAYLOR WILLIAM M
IPC: F16J15/08
Filed: 1988-01-12
Granted: 1991-04-09
Abstract: Abstract An improved wellhead structure including a wellhead housing having a sealing surface with grooves therein and pressure compensating material in the grooves, a sealing sleeve having inner and outer resilient seal rings and an internal actuating groove with upper and lower shoulders, an actuating ring having an outer flange engaged within the internal groove in the sleeve and an external surface tapering downward and inwardly and a hanger with an upstanding rim having external grooves with pressure compensating material in the grooves and having an inner surface which tapers upwardly and outwardly and is engaged by the external tapered surface of the actuating ring and upper and lower external seals and a port extending from the interior of the actuating ring to its exterior into the area between such seals so that pressure applied through the port forges the hanger rim and the sealing sleeve outward to ensure positive metal-to-metal sealing across the annulus between the exterior of the hanger rim and the interior of the wellhead housing.
Patent CA-1314984-C (CA)
Inventor: ARATANI KATSUHISA
IPC: G11B11/105
Filed: 1988-04-22
Granted: 1993-03-23
Abstract: ABSTRACT OF THE DISCLOSURE:           A thermomagnetic recording method is disclosed using a thermomagnetic recording medium where first, second and third magnetic thin films each formed of rare-earth and transition metals are sequentially superposed to form layers in a magnatically coupled manner.  The recording is carried out by heating the thermomagnetic recording medium under a predetermined magnetic field perpendicular to the film plane thereof while selectively modulating, in accordance with data to be recorded, a first heating state at a first temperature T1 substantially above the Curie point Tcl of the first magnetic thin film and adequate to hold the sublattice magnetization of the transition metal of the second magnetic thin film in a predetermined direction, and a second heating state at a second temperature T2 substantially above the Curie point Tcl and adequate to invert the sublattice magnetization of the transition metal of the second magnetic thin film to the reverse of the predetermined direction.  In a cooling step subsequent to the first and second heating states, maintaining the sublattice magnetization of the third magnetic thin film in a predetermined direction while orienting the sublattice magnetization of said second magnetic thin film to be directionally coincident with that of the third magnetic thin film at a temperature below the first temperature T1 without directionally inverting the sublattice magnetization of the first magnetic thin film.
Patent CA-1307436-C (CA)
Title: Detergents containing water-soluble copolymers containing as copolymerized units monomers having two or more ethylenically unsaturated double bonds
Inventor: TRIESELT WOLFGANG
IPC: C11D3/00
Filed: 1988-05-06
Granted: 1992-09-15
Abstract: O.Z. 0050/39184 Abstract of the Disclosure:  A surfactant-based detergent contains water-soluble copolymers which contain a)  from 99.5 to 15 mol % of one or more monoethylenically unsaturated C3- to C6-monocarboxylic acids, b)  from 0.5 to 20 mol % of one or more comonomers which have two or more ethylenically unsaturated noncon-jugated double bonds and are derived from esters, c)  from 0 to 84.5 mol % of one or more monoethylenically unsaturated C4- to C6-dicarboxylic acids, d)  from 0 to 20 mol % of one or more hydroxyalkyl esters of monoethylenically unsaturated C3- to C6-carbo-xylic acids and e)  from 0 to 30 mol % of other water-soluble monoethyl-enically unsaturated monomers copolymerizable with a) to d) as copolymerized units, with the proviso that the sum of the mol %ages a) to e) is always 100 and which have a Fikentscher K value of from 8 to 120.
Patent CA-1299244-C (CA)
Title: Apparatus for determining the strength and direction of a magnetic field, particularly the geomagnetic field
Inventor: BRUN ROBERT
IPC: G01V3/40
Filed: 1988-05-10
Granted: 1992-04-21
Abstract: ABSTRACT OF THE DISCLOSURE           A toroidal or similar body of a non-magnetic, insulating material, preferably glass fibre-reinforced plastic or ceramic is provided with at least three recesses for receiving in each case a corresponding one magnetoresistive sensor.  The associated measuring directions of said sensors are orthogonal to one another.  For producing a magnetic auxiliary field applied to the sensors, a coil is arranged on the body.  For increasing the accuracy and reliability of the measured result, the body is provided with at least one further recess for receiving a further sensor.  The measuring direction of the further sensor differs from that of the other sensors and forms preferably the same angle with the other measuring directions.  The body can be in multipart form and is in particular made from two identical parts.  The apparatus can be used in electronic compasses and for north finding devices.
Patent CA-1314887-C (CA)
Title: Process for the production of 2-quinoxalines
Inventor: MALZ RUSSELL E JR
IPC: C07B61/00
Filed: 1988-05-27
Granted: 1993-03-23
Abstract: ABSTRACT      Certain 2-quinoxalinol-4-oxides are selectively reduced to form 2-quinoxalinols employing hydrogen as a reducing agent by reacting such 2-quinoxalinol-4-oxides with a catalyst selected from the group consisting of platinum, rhodium, ruthenium and nickel at between about 20° and about 150°C and at between about 6 and about 60 atmospheres.
Patent CA-1284081-C (CA)
Inventor: JANECKE JAMES P
IPC: G05D16/20
Filed: 1988-05-30
Granted: 1991-05-14
Abstract: ABSTRACT OF THE DISCLOSURE   A hydraulic pressure control valve includes a modulator-controlled solenoid assembly which selectively axially displaces a disc armature adjacent thereto.  When not attracted by the solenoid, the armature is biased away from the solenoid by a wave spring.  Movement of the armature opens and closes the outlet of a lower body member to a source of hydraulic fluid under pressure. The armature is improved, having dimples on the face adjacent the solenoid assembly to minimize sticking.  Additionally, the center pole of the solenoid is axially adjustable and can therefore be set for different valve performance levels.  Assembly of the valve is quickly accomplished using pneumatic pressure under performance conditions for adjustment of and setting the initial displacement of the disc armature,  Setting is accomplished by crimping the various components in an outer tube.
Patent CA-1311311-C (CA)
Title: Full page graphics image display data reduction
Inventor: JACKSON BRIAN H
IPC: H04N1/415
Filed: 1988-07-08
Granted: 1992-12-08
Abstract: ABSTRACT OF THE DISCLOSURE      A program  implemented  method  converts  complex graphics and picture images in binary form into bit map representations  which  include  only  that  image  data which is essential  for  its reproduction by  an output printer  with  limited  buffer  memory.    The  method includes the steps of storing a group of rows or block of the binary image data at a time in an input buffer, then analyzing a byte at a time,  the row segment of image  data  thereby  dividing  the  row  segment  into  a number of cell matrices.   Based upon the analysis of cell  matrices,   the  method  generates  bit  map representations describing only the essential or black data.    Each  bit map  representation  generated  has  a height corresponding to the number of horizontal scan lines and a length which corresponds to the number of consecutive cell matrices detected as containing black data.   Only the essential image data contained in the generated bit map representations is transferred to an output  buffer,  along  with  generated  horizontal  and vertical positioning information,  in addition to other parameter information required to reproduce the bit map representation.   The above steps are repeated for each row segment or group of data defining each part of a page until the entire image has been processed.
Patent CA-1312375-C (CA)
Title: Magnetic recording disk cartridge
Inventor: KADOKURA SADAO
IPC: G11B23/03
Filed: 1988-07-14
Granted: 1993-01-05
Abstract: A MAGNETIC RECORDING DISK CARTRIDGE ABSTRACT OF THE DISCLOSURE A magnetic recording disk cartridge includes a casing having upper and lower halves mated together to define a planar spacing in which a magnetic recording disk supported by a hub member is rotatably held, and fluctuation suppressing ring members are disposed within the casing to be axially spaced from one another via at least an outer peripheral portion of the magnetic recording disk. The fluctuation suppressing ring members aerodynamically maintain the magnetic recording disk at an intermediate position in the planar spacing of the casing during the rotation of the magnetic recording disk.
Patent CA-1332845-C (CA)
Inventor: JUSTUS MARVIN W
IPC: H02H7/08
Filed: 1988-08-11
Granted: 1994-11-01
Abstract: A method and apparatus for controlling the operation of an oil well pumping unit in which the prime mover is a polyphase AC electric motor.  The system comprises means for generating a plurality of signals representative of motor fault parameters including a motor winding overtemperature fault, undervoltage fault, and a phase imbalance fault. Upon occurance of a fault, a contactor in the motor supply leads is open to shut down the motor.  After such shutdown because of undervoltage or phase imbalance faults the fault parameters are continuously scanned and once the fault has been cleared the motor is restarted.  Where motor shutdown occurs because of an over temperature fault, the motor is maintained in a latched off shut down condition until an operator implemented reset occurs.  An accessible counting memory is provided having separate registers for each of the fault conditions.
Patent CA-1295414-C (CA)
Title: Image composing apparatus
Inventor: UESUGI MITSUAKI
IPC: G06T7/00
Filed: 1988-10-06
Granted: 1992-02-04
Abstract: ABSTRACT    An image composing apparatus adapted to produce a com-posite image in which a value of each of picture elements is represented by a maximum value or minimum value of the bright-ness of a video signal as well as a corresponding other signal at the instant of the maximum or minimum value. A composite image is formed in which a value of each of picture elements is represented by a count of synchronizing signals or an externally applied timing, position or angle indicative external input signal at an instant that the video signal attains the maximum value or the minimum value for each picture element.
Patent CA-1329603-C (CA)
Title: 2,2-dimethylchromene derivatives, process for their preparation and pharmaceutical compositions in which they are present
Inventor: GARCIA GEORGES
IPC: A61K31/675
Filed: 1988-10-11
Granted: 1994-05-17
Abstract: IN THE C A N A D I A N PATENT & TRADEMARK OFFICE    PATENT APPLICATION   entitled:  2,2-Dimethylchromene derivatives, process for their preparation and pharmaceutical compositions in which they are present in the names of:  Georges GARCIA                   Alain DI MALTA Patrick GAUTIER    Assignee:  SANOFI     ABSTRACT           The present invention relates to 2,2-dimethyl-chromene derivatives of the formula :     (I)   in which Z represents a halogen atom or a cyano, nitro, acetyl, phosphono or dialkoxyphosphoryl group, the alkoxy group containing 1 to 3 carbon atoms, and the pharmaceutically acceptable salts of the phosphono group.          These compounds show an antihypertensive and antiarrythmic activity.          The present invention also relates to a process for the preparation of said compounds and to the pharmaceutical compositions in which they are present.