baber/WOPTO huggingface dataset:
Patent CA-2018078-A1 (CA)
Title: Turbulance generator in the headbox of a paper machine
IPC: D21F1/02
Filed: 1990-06-01
Abstract: A turbulence generator (20) in the headbox of a paper making machine which produces internal microturbulence in the pulp suspension flow (F), whereby the homogeneity of the flow is improved.  The turbulence generator (20) comprises a system of turbulence tubes, which consists of a number of turbulence tubes (22) placed one above the other and side by side.  These tubes start at the inlet side of the turbulence generator (20) having thereat a substantially circular cross-section, being gradually and smoothly, in the flow direction, converted to a rectangular cell structure with planar sides.  The cell structure (30) at the outlet side (23) of the turbulence generator (20) consists of an overlapping cell system, wherein there are at least two inclined middle cell rows (31, 32; 31a, 31b, 32a, 32b) placed one above the other, in which cell rows the cells have rectangular cross-sections.  The cells have a shorter planar side (X) and a longer planar side (Y).  The long sides (Y) are, relative to one another, and the short sides (X) are, relative to one another, in the middle cell rows (31, 32; 31a, 31b, 32a, 32b) placed one above the other, positioned perpendicularly to one another and at an angle of about 45° relative to the horizontal and the vertical planes.  The cell structure includes peripheral cell rows (33a, 33b) placed above and underneath the middle cell rows (31, 32; 31a, 31b, 32a, 32b).
Patent CA-2018566-A1 (CA)
Title: Purification of q beta replicase
Inventor: DIFRANCESCO ROBERT A
IPC: C12N9/12
Filed: 1990-06-08
Abstract: PURIFICATION OF Q BETA REPLICASE               Abstract of the Disclosure A process of producing highly pure, Q Beta replicase having a high level of activity is described.  The present process allows isolation of Q Beta replicase from recombinant bacteria containing a clone of a phage DNA encoding the 65,000 weight subunit of Q Beta replicase. The present process provides an efficient method for producing pure Q Beta replicase which can readily be scaled up to commercial production levels.
Patent CA-2018676-A1 (CA)
Title: Novel heteropolymeric protein production methods
Inventor: KELTON CHRISTIE A
IPC: C07K19/00
Filed: 1990-06-11
Abstract: Cultured mammalian cells transfected with new vectors comprising full-length or partial .alpha. and .beta. subunit genomic DNA sequences produce significantly higher levels of dimeric glycoprotein hormone than do cells transfected with .alpha. and .beta. subunit cDNA sequences. In cases where only the cDNA clones are available, the cDNA sequences can be used in new expression vectors comprising introns or other important genomic regions from a homologous or heterologous source.
Patent CA-2018812-A1 (CA)
Inventor: COVERT DARRELL E
IPC: B60C11/12
Filed: 1990-06-12
Abstract: A radial ply pneumatic tire (30) has as asymmetric tread portion (41) having circumferential grooves (50, 51, 52, 53) and diagonal grooves (55, 56) therein.  The tread is divided into three axial regions (A, B, C) of equal width, and in each region the net-to-gross ratio is different.  The rate of treadwear in the axially outermost regions (A, B) of the tread are substantially equalized by features including varying groove depths and widths, groove paths, and chamfering the edges of block elements (57, 58, 62, 63) of the tread.
Patent CA-2020177-A1 (CA)
Inventor: LIVNAH ARON
IPC: A47B96/18
Filed: 1990-06-29
Abstract: A countertop having a cutout portion, preferably for inserting a kitchen appliance with an overlapping flange, has corners with stress relief radii cut into the wider sides of the countertop to maximize the radii while keeping the cutout hidden under the flange.
Patent CA-2021766-A1 (CA)
Inventor: HELLWIG REIMAR
IPC: G01L9/00
Filed: 1990-07-23
Abstract: TITLE OF THE INVENTION            PRESSURE SENSOR AND METHOD FOR CALIBRATING PRESSURE SENSORS     ABSTRACT OF THE DISCLOSURE            A precision pressure sensor in the form of a load cell has a mounting ring closed at one end by an end wall which has axially outwardly facing dead-end holes therein to form sensor beams each having an axially outwardly facing plane surface to which strain gages are bonded.  The dead-end holes have bottoms forming sensor membranes. Opposite the closed end the mounting ring encloses a cavity forming a sensor space which is closed by a closure plug that simul-taneously has a bore for admitting fluid under pressure to be measured into the sensor space.  A ring groove in the end wall has approximately radially sloping surfaces which together with the dead-end holes determine the minimum cross-section of the measuring beams.  The ring groove also determines the minimum thickness of the sensor membranes.     2505/ar             - 1 -
Patent CA-2022172-A1 (CA)
Title: Internally plasticized polyvinyl halide compositions and articles prepared therefrom
Inventor: VYVODA JOSEF C
IPC: C08F299/04
Filed: 1990-07-27
Abstract: ABSTRACT          An internally plasticized polyvinyl halide composition is prepared by polymerizing a vinyl halide in the presence of a reactive polyester plasticizer having terminal groups copolymerizable therewith.  The reactive polyester acts as an internal plasticizer for the polyvinyl halide composition and is not readily extactable therefrom. 8201e
Patent CA-2022368-A1 (CA)
Inventor: OSAWA MASAKAZU
IPC: B63B1/40
Filed: 1990-07-31
Abstract: The wave making resistance on a proceeding ship can be greatly decreased by providing the ship hull with at least one pair of fins mounted on the hull extending above and below the draft line, each fin being fixed at the front end line and the rear end of the fin outwardly extending making a certain fin-mounting angle of 2 to 25° with the hull surface.
Patent CA-2023599-A1 (CA)
Inventor: BERTRAND JEAN
IPC: B65B13/28
Filed: 1990-08-20
Abstract: A binding device that comprises, on a frame, means for placing a flexible bond around an article to be bound, comprising guide members for bringing the two end lengths of the bond to cross over each other, and a head for twisting them placed at the rear of the said guide members and formed by a gripper mounted on the end of a rotary body.  This binding device comprises means for guiding and driving the twisting head in translation, preferably constituted by a nut integral with the frame, in which is screwed a threaded portion of the body of the twisting head, mounted slidingly in a member for coupling to a means ensuring its rotation.  The members for guiding the flexible bond are further withdrawable in synchronism with the translation of the twisting head. Wire coil compacting and binding apparatus equipped with several of these binding devices arranged in a circle is also described.
Patent CA-2024239-A1 (CA)
Inventor: CHENG SHI-WAI S
IPC: F02P23/00
Filed: 1990-08-29
Abstract: Torch jet ignition is used to assist conventional spark ignition.  A small (0.5 - 1 cc) chamber in a spark plug has an orifice (0.1 - 0.2 cm diameter) adjacent the spark gap to emit a torch jet into the main combustion chamber to enhance the combustion.  The combustion is initiated by the conventional spark in the combustion chamber and the combustion ignites the torch jet.  In another embodiment, two spark gaps in series are used, one in the main combustion chamber and one in the torch chamber.
Patent CA-2024867-A1 (CA)
Title: Smooth-surfaced magnetic recording medium
Inventor: TSAI HSIAO-CHU
IPC: G11B5/64
Filed: 1990-09-07
Abstract: ABSTRACT A high-density thin-film magnetic disc and method of producing the disc.  In forming the disc, chromium is sputtered onto a smooth-surfaced, non-metallic substrate, such as a glass substrate, first at room temperature, to form a substratum with a random structure, then at a high temperature, to form a chromium underlayer with anisotropic crystal orientation.  A cobalt-based alloy is sputtered onto the underlayer to form the thin film magnetic layer. The disc has high coercivity, low bit shift, and can be operated at a flying height of between 2-4 µinches.
Patent CA-2025816-A1 (CA)
Inventor: PINSL-OBER JUDITH
IPC: C11D1/00
Filed: 1990-09-20
Abstract: An aqueous cleaning solution is described and is characterised in that it contains a fast-wetting surfactant selected from the group comprising sulphosuccinic acid, fluorinated surfactants and secondary alkanesulphonates with a wetting time (measured in the Draves test) of less than 20 seconds at a concentration of 0.3 % by weight and 25 DEG C, and an inorganic or organic acid with a pKa of >2.5, and has a pH not exceeding 4.0. This cleaning solution is very suitable for rapid, simple and efficient cleaning of diagnostic analysis systems with a single cleaning composition.
Patent CA-2025831-A1 (CA)
Title: Radiation-polymerizable mixture and process for producing a solder resist mask
Inventor: EMMELIUS MICHAEL
IPC: G03F7/033
Filed: 1990-09-20
Abstract: The present invention relates to a radiation-polymerizable mixture which includes a polymerizable compound, a polymeric binder which has units of methacrylic acid, a methacrylic acid ester and a styrene, the latter in a proportion of 40 to 65% by weight, a finely divided mineral pigment on a silicic acid or silicate basis, a photopolymerization initiator, a compound having at least two epoxy groups in its molecule and a thermal hardener for epoxy groups. The mixture is advantageous, in particular, for producing solder masks and can be cured after exposure to an image and development by heating to about 80 to 150°C to form a stencil which is resistant under soldering conditions.
Patent CA-2027288-A1 (CA)
Title: Series gapped metal oxide surge arrester
Inventor: WENDAHL LAURENCE K
IPC: H01T4/00
Filed: 1990-10-10
Abstract: ABSTRACT      A surge arrester is provided including highly non-linear metal oxide varistor disks in series with one or more resistively graded gap assemblies.  The gap assemblies comprise a low exponent, non-linear silicon carbide resistive material in parallel with a spark gap.  In this combination, the arrester voltage is shared between the gap assemblies and the MOV disks at normal steady-state system voltages.  The arrester provides substantial improvements in temporary overvoltage performance and protection levels over conventional gapless MOV arrester designs.
Patent CA-2028134-A1 (CA)
Title: Heat exchange manifold
Inventor: CLARKE JOHN B
IPC: F28D9/00
Filed: 1990-03-09
Abstract: A manifold formed from a plurality of segments (6), each having an aperture (7) therethrough and at least one recess in a surface thereof extending between the aperture and an edge of the segment, such that, when the plurality of segments are secured together, the apertures together form a manifold chamber (13) and the recesses define between the segments flow passages (10a, 10b, 10c) opening into the chamber, and closure members (8) at each end of the chamber, a common flow passage (4) being provided between the chamber and the exterior of the manifold.
Patent CA-2028376-A1 (CA)
Title: Process for resolving chiral intermediates used in making calcium channel blockers
Inventor: KRAPCHO JOHN
IPC: C07C319/28
Filed: 1990-10-23
Abstract: Abstract PROCESS FOR RESOLVING CHIRAL   INTERMEDIATES USED IN      MAKING CALCIUM CHANNEL BLOCKERS        This process enables preparation of the preferred (+)-threo enantiomer by resolution of its racemic mixture of a compound of the formula     , wherein Y1 and Y2 are each independently lower alkyl and R1 is hydrogen or lower alkyl.  The compound is treated with a chiral acid (tartaric acid preferred) in an organic solvent (ethanol preferred) to yield the (+)-threo enantiomer, which is then recovered from the reaction mixture. This enantiomer may then be used to produce the preferred (+)-cis enantiomor of certain benzo-thiazepine cardiovascular agents.
Patent CA-2028907-A1 (CA)
Title: Irrigating and lavage compositions
Inventor: DOUGHERTY EMERY W
IPC: A61K8/73
Filed: 1990-10-30
Abstract: ABSTRACT   Irrigants to be used with vibratory scaling appa-ratus and lavage are provided.   The irrigants of the invention are characterized in that they contain a surfactant of the plaque and endotoxin solvating type in an amount of about 0.01 to about 5% of said compo-sition and water and have the characteristics of being a free-flowing liquid free of substances having high humectant properties and drying with a relatively non-sticky residue.   Other optimal ingredients are calcium chelating compounds and taste enhancers and alcohol.          The irrigants are formulated so that they have minimal stickiness on drying, minimal foaming and do not gum-up the apparatus in which they are used.  Also provided is a method for treating dental diseases comprising apply-ing the irrigants of the invention through a vibratory scaling apparatus to substantially optimize the effi-ciency of said apparatus and to substantially optimize destruction and removal of infectious bacteria using said apparatus and the removal or inactivation of endo-toxins derived from bacteria or the host.
Patent CA-2029324-A1 (CA)
IPC: C08F4/60
Filed: 1990-11-05
Abstract: Catalyst support in the form of solid particles consisting essentially of a complex of MgCl2 and of alcohol, characterised in that the complex of formula MgCl2.x(n-BuOH) in which 0.1 </= x </= 2, has a specific surface of 1 to 20 m<2>/g, the porosity of the particles being from 1 to 2 cm<3>/g. 
<??>The support is obtained from an emulsion of a solution of MgCl2 in an excess of n-butanol from which the complex is precipitated by a compound SiClxR4-x with 1 < x < 4 and R being a saturated hydrocarbon radical containing from 1 to 4 carbon atoms, the complex formed being in the emulsion and during the precipitation at a temperature not exceeding 50 DEG C. 
<??>The support is employed in the catalyst components for olefin polymerisation or copolymerisation.
Patent CA-2030384-A1 (CA)
Title: Cable stranding apparatus
Inventor: ZIEMEK GERHARD
IPC: H01B13/02
Filed: 1990-11-20
Abstract: ABSTRACT      A cable stranding apparatus is described as having a plurality   of   stranding   rotor   units   that   are interchangeably coupled, in a locked manner, to a single rotor drive assembly of such apparatus.   Each stranding rotor unit is designed to accommodate the dimensions of particular  cable  elements  to  be  stranded.    For  this purpose, the stranding rotor unit for cable elements of a large cross-section has a plurality of large collets for accommodating the drawing of such large cable elements through the unit; while the cable stranding rotor unit for cable elements of a small cross-section has a plurality of smaller collets for drawing the smaller cable elements through such unit.
Patent CA-2031567-A1 (CA)
Inventor: KARITA SEIICHIRO
IPC: B41J2/165
Filed: 1990-12-05
Abstract: A package for an ink jet cartridge includes an accommodating container having a main body for accommodating the ink jet cartridge and a flange for sealed connection between the main body and a cover; and a holding member having an opening defining member for defining an opening for insertion of the main body therethrough and a flat member cooperable with the opening defining member to sandwich the flange therebetween, the opening defining member having an edge portion contactable to an outer edge of the flange and a peripheral portion around the outer edge.
Patent CA-2033432-A1 (CA)
Inventor: CANN KEVIN J
IPC: C08F4/06
Filed: 1990-12-28
Abstract: ABSTRACT OF THE DISCLOSURE          A vanadium-based catalyst system is treated with an ether as a means of enhancing catalyst activity and polymer productivity.
Patent CA-2037737-A1 (CA)
Title: Process for the reclamation treatment in batch quantities of predominantly clay-bounded used casting sand
Inventor: WILHELM LUDWIG
IPC: B22C5/04
Filed: 1991-03-07
Abstract: Abstract A process is suggested for the regeneration treatment, in batch quantities, of predominantly clay-bonded casting old sand for its re-use.  The dust-like particles detaching themselves from the sand grains as a consequence of the rubbing action are pneumatically drawn off during the treatment.  In this way there results a reduction of the weight of the batch which is compensated for in terms of weight or in terms of volume by the addition of a certain quantity of sand.     By means of this process it should be achieved that the rubbing action and thus the detachment of the shells of the sand grains remains constant during the entire batch treatment.
Patent CA-2041223-A1 (CA)
Title: Functionally programmable pcm data analyzer and transmitter for use in telecommunication equipment
Inventor: LENIHAN JOHN P
IPC: H04M1/24
Filed: 1991-04-25
Abstract: A digital signal processing system for interfacing with an apparatus for central control having at least a control port comprising control apparatus for processing having an interface port connected to the control port of the central control, the apparatus for processing also having at least first, second and third ports, at least first, second and third kernel apparatus for running software application tasks having first, second and third ports, respectively, connected to the first, second and third ports of the control apparatus for processing, respectively, each of the kernel apparatus having a plurality of channel ports connected to a bus apparatus for providing a plurality of channels, the control apparatus for processing in response to data received from the central control establishing one of a plurality of software application tasks in each of the kernel apparatus.
Patent CA-2044527-A1 (CA)
Inventor: VASSELIN THIERRY
IPC: B32B27/08
Filed: 1991-06-13
Abstract: Thermoplastic films suitable for adhesive bonding. They consist of a mixture comprising at least one thermoplastic elastomer (TPE) based on polyamide and at least one modified copolyolefin. The films may be employed as such in the form of mono- or multilayer films, but can also be involved in the manufacture of composite materials (noise-suppressing laminates, sailboard, decorative panels for the bottom of motor vehicle bodywork).
Patent CA-2047407-A1 (CA)
Title: Material sensor
Inventor: CARENZO ANTHONY
IPC: D02H13/08
Filed: 1991-07-19
Abstract: Abstract A material sensor employs deflectable means and piezoelectric film means for providing signals indicative of a material condition.
Patent CA-2048902-A1 (CA)
Inventor: WRIGHT CHARLES M
IPC: C08K5/10
Filed: 1991-08-09
Abstract: MONOCARBOXYLIC ACID ESTERS AND OLEFIN POLYMER COMPOSITION STABILIZED THEREWITH     Abstract of th Disclosure Disclosed are 2,4,6-trialkyl-3-hydroxybenzyl esters of monocarboxylic resin acids and olefin polymer compositions stabilized therewith.
Patent CA-2049916-A1 (CA)
Title: Method of forming thin film on fiber end surface
Inventor: UEMIYA TAKAFUMI
IPC: G02B6/24
Filed: 1991-08-26
Abstract: A method of forming a thin film on an end surface of a fiber which comprises a core of an organic crystal, and a clad made of glass, wherein said method comprises:          (a)  cutting the fiber under reduced pressure; and (b)  forming a thin film on the cut surface of the fiber simultaneously with the cutting, or immediately after the cutting.
Patent CA-2051084-A1 (CA)
Title: System for starting an internal combustion engine for powering vehicles
Inventor: OTSUKA MASUHIRO
IPC: B60K28/10
Filed: 1991-09-10
Abstract: In an engine starting system for a vehicle with an automatic transmission system including a clutch operated by an actuator, the system comprises a detector for detecting whether an engine has stalled for a reason other than that an ignition switch has been turned off, and a control signal for disengaging the clutch is supplied to the actuator when the ignition switch is turned to its start position in the case where it is detected by the detector that the engine has stalled.  After this, the current necessary for activating the starter motor is supplied to the starter motor irrespective of the position selected by a selector whenever the ignition switch is turned to the start position.  The clutch needs not necessary be disengaged and it is possible to drive the starter motor with the clutch engaged.
Patent CA-2052044-A1 (CA)
Inventor: KIDWELL JOHN H
IPC: B01D53/50
Filed: 1991-09-23
Abstract: A method of removing sulphur oxides from flue gases comprises atomizing a wet alkali slurry into a slurry spray.      A pneumatically conveyed dry reactive recycled flyash is supplied in an annular pattern around the slurry spray to efficiently utilize the flyash without experiencing difficulties which were experienced in the prior art with regard to a wet mixture of the flyash.
Patent CA-2056589-A1 (CA)
Inventor: JOSHI NARENDRA D
IPC: F23R3/12
Filed: 1991-11-28
Abstract: A miter having a mining duct, a set of inner and outer counter-rotating swirlers at the upstream end of the mixing duct, and a fuel nozzle located axially along and forming a center-body of the mixing duct is provided, wherein high pressure air from a compressor is injected into the mixing duct through the swirlers to form an intense shear region and fuel is injected into the mixing duct from the fuel nozzle so that the high pressure air and the fuel is uniformly mixed therein so as to produce minimal formation of pollutants when the fuel/air mixture is exhausted out the downstream end of said mixing duct into the combustor and ignited.
Patent CA-2056829-A1 (CA)
Title: Programmable controller processor for concurrently executing multiple user programs
Inventor: YOKE MICHAEL D
IPC: G05B19/05
Filed: 1991-12-02
Abstract: A programmable controller has a processor with a memory that stores a plurality of user defined control programs for operating machinery and a list of the stored programs in the order of execution.  The processor sequentially selects each program from the list and executes the program until a defined point in the program is reached.  At that time, execution of the program is suspended and another program is selected from the list.  If a ladder logic type program is selected, the processor makes one execution scan through the program before suspending execution.  If a sequential function chart program is selected, one section is executed and a transition condition associated with that section is evaluated before suspending execution of the sequential function chart program.      Following the suspension of each control program's execution, the processor reads input data and writes data to output devices.  The execution list of the stored programs is dynamic in that an executing user defined control program may add or delete a program on the list or inhibit the execution of a program that remains on the list.                             -i-
Patent CA-2061327-A1 (CA)
Title: Rest pad for an infant
Inventor: BEGER UDO
IPC: A47D5/00
Filed: 1992-02-17
Abstract: ABSTRACT     A rest pad (1, 1') for an infant is described, which is provided with a preferably padded bottom (2, 2') delimited on at least one side thereof by an essentially straight, elevated rim section (3, 3'), said elevated rim section (3, 3') being formed by a filling material, which is received in a hollow reception space such that it cam be removed there-from for the purpose of lowering said rim section (3, 3'). In order to be able to use such a rest pad universally and with variable sizes, it is suggested that the hollow recep-tion space should be defined by a loop (3a to 3d, 3'a to 3'd) connected via a predetermined bending boundary (4a to 4d, 4'a to 4'd) to the bottom (2, 2') in such a way that, for increasing or reducing the size of the rest pad, said loop, together with the filling material, can be folded inwards towards said bottom (2, 2') and outwards away from said bottom.                        (Fig. 1)