baber/WOPTO huggingface dataset:
Patent CA-1297495-C (CA)
Title: Process for the preparation of alkali metal phosphonoformates
Inventor: GERDAU THOMAS
IPC: C07F9/38
Filed: 1987-03-06
Granted: 1992-03-17
Abstract: Abstract A process for the production of alkali-phosphonoformates which comprises bringing together in a first stage a trialkyl ester of phosphonoformic acid and an aqueous solution of an alkali hydroxide at a temperature in the range from the freezing point of water and about 40°C, either keeping the resulting mixture in a second stage for further progress of the reaction and then heating the reaction mixture in a third stage to a temperature up to about 100°C for completion of the saponification, or heating the reaction mixture immediately for completion of the saponification to a temperature of up to 100°C.
Patent CA-1303059-C (CA)
Title: Process for producing 2,6-naphthalenedicarboxylic acid by oxidizing 2,6-diisopropylnaphthalene
Inventor: HAYASHI SHOICHIRO
IPC: C07C51/265
Filed: 1987-03-13
Granted: 1992-06-09
Abstract: TITLE OF THE INVENTION:      PROCESS FOR PRODUCING 2,6-NAPHTHALENEDICARBOXYLIC      ACID BY OXIDIZING 2,6-DIISOPROPYLNAPHTHALENE     ABSTRACT OF THE DISCLOSURE:        Disclosed herein is a process for producing a highly pure product of 2,6-naphthalenedicarboxylic acid in a large quantity at a moderate price by oxidizing 2,6-diisopropyl-naphthalene while using a water-soluble salt of cobalt, a water-soluble salt of manganese or a mixture thereof, a water-soluble salt of cerium and a bromine compound as the catalyst of the oxidation.
Patent CA-1285550-C (CA)
Title: Core drilling tool for boreholes in rock
Inventor: MAKOHL FRIEDHELM
IPC: E21B25/02
Filed: 1987-04-15
Granted: 1991-07-02
Abstract: ABSTRACT OF THE DISCLOSURE CORE DRILLING TOOL FOR BOREHOLES IN ROCK     A  core  drilling  tool  for  bore-holes  in rock comprises a  stem to be attached to a pipe  string and rotatably mounting an outer tube having a drilling bit at its lower end.   A core tube  is mounted  in a central passage in the tool by latch means engaging in a locating recess in the stem whereby the lower end of the core tube is located adjacent the bit but spaced slightly therefrom to allow passage of drilling fluid.   The outer tube and drilling bit are rotated by a motor having a stator fixed to the stem by a connector element preventing rotation of the  stator but allowing its transverse movement and a cooperating rotor fixed to the outer tube, so that as the rotor  rotates,  driven  by  drilling  fluid,  the  stator executes an eccentric orbit.  The diameter of the central passage in the stem slightly exceeds the maximum external diameter of the core tube.  The central passage through the connector element and stator has a diameter equal to the maximum external diameter of the core tube plus the eccentricity of the stator whereby the core tube can be readily introduced into and withdrawn from the central passage. Drilling fluid is suitably supplied to the motor through the central passage above the core tube (which is desirably sealed by a  seal,  at  its upper end,  to the stem) and thence to an annular space between the outer tube and the connecting element the annular space leading to the working chamber of the motor from which it flows to the bit though an annular space between the outer tube and the core tube.
Patent CA-1318811-C (CA)
Title: Process for decaffeinating green coffee
Inventor: KAPER LOURIS
IPC: C07D473/12
Filed: 1987-05-26
Granted: 1993-06-08
Abstract: A PROCESS FOR DECAFFEINATING GREEN COFFEE                 ABSTRACT OF THE DISCLOSURE           The   invention   concerns   Z1  process   for decaffeinating green coffee by extraction of the coffee with water and treatment of the aqueous extract with activated carbon.  In order to improve this process the invention  is  characterized  in that  a)  treating the extract with activated carbon from process step c, in which the caffeine is largely absorbed by the activated carbon, b) treating the caffeine-loaded activated carbon with an acid liquid whereby the caffeine is largely removed  from  the  activated  carbon,  c)  washing  the activated carbon with water until it has a pH ranging from 3 to 6 (determined according to ASTM D 3838-80), and d) returning the washed carbon to process step a.
Patent CA-1286887-C (CA)
Inventor: RICE NIGEL
IPC: E03F3/06
Filed: 1987-06-22
Granted: 1991-07-30
Abstract: ABSTRACT          An existing underground sewer or other pipe is renovated by rupturing and radially expanding the pipe and installing a replacement pipeline within the ruptured pipe.  The pipe is ruptured and radially expanded by introducing a plurality of radially expandable tubular members into the pipe so as to form a liner.  Each member is then radially expanded so that the liner engages with and then ruptures the portion of the pipe adjacent thereto.  The tubular members may be radially expanded by inflating a bag within the confines of the members.
Patent CA-1301320-C (CA)
Title: Write-once data writing system for optical recording medium
Inventor: SUZUKI HIDEFUMI
IPC: G11B7/00
Filed: 1987-08-24
Granted: 1992-05-19
Abstract: WRITE-ONCE DATA WRITING SYSTEM FOR OPTICAL RECORDING MEDIUM                   ABSTRACT OF THE DISCLOSURE   Disclosed is a write-once data writing method for optical recording medium of a type wherein a data track includes a plurality of sectors each having at least a preamble and data.     A deceleration region is provide at a position following the last recorded sector on a track including both recorded and blank areas, the length of the deceleration region corresponding to a deceleration time necessary to change the relative moving rate of a writing/reading head with respect to the optical recording medium from one for reading to another for writing, and then additional data is recorded sector by sector at region following said deceleration region.     Also, disclosed is an apparatus for achieving the method.
Patent CA-1284232-C (CA)
Inventor: JEROME RICK C
IPC: H01L29/73
Filed: 1987-08-24
Granted: 1991-05-14
Abstract: LOW DOSE EMITTER VERTICAL FUSE              ABSTRACT OF THE DISCLOSURE         A vertical fuse structure is disclosed which includes a lightly-doped emitter 30 to provide improved fusing characteristics.  The structure includes a buried collector 12, an overlying base 18, and an emitter 30 above the base 18.  In the preferred embodi-ment, the emitter 30 extends approximately 0.2 microns from the upper surface and has an impurity concentration of about 8X1019 atoms of arsenic per cubic centimeter at the surface.  The base region 18 is lightly doped and extends for approximately 0.46 microns below the emitter 30 to the collector 12.  On the upper surface of emitter 30, a metal contact 35 is disposed.  The fuse is blown by heating the metal 35 emitter 30 interface to its eutectic melting point using a current or voltage pulse to cause the aluminum to short through the emitter 30 to the base 18.
Patent CA-1280494-C (CA)
Inventor: DEBRULER DENNIS L
IPC: H04Q11/04
Filed: 1987-08-25
Granted: 1991-02-19
Abstract: CONTROL INFORMATION COMMUNICATION ARRANGEMENT    FOR A DISTRIBUTED CONTROL SWITCHING SYSTEM            Abstract A switching system including a number of switching modules each having a plurality of access ports. Incoming and outgoing packet channels are extended between each switching module and an inter-module packet switch. Each of the switching modules includes both a packet switching unit and a circuit switching unit for switching information to and from the access ports. Each switching module further includes a control unit that controls the switching units and that generates inter-module control packets, and a communication interface that transmits inter-module control packets generated by the control unit on theincoming packet channel to the inter-module packet switch. The communication interface also transmits inter-module control packets received on the outgoing packet channel from the inter-module packet switch to the control unit. The inter-module packet switch concurrently packet switches inter-module control packets received on a number of the incoming packet channels, via multiple independent paths to a number of the outgoing packet channels.
Patent CA-1297748-C (CA)
Inventor: SIVONEN JUHA
IPC: A21B1/04
Filed: 1987-10-26
Granted: 1992-03-24
Abstract: ABSTRACT           The invention relates to a masonry fireplace, particularly a baking oven, comprising:  a furnace in which the fuel is burnt and the bottom of which is formed by a baking grate, the furnace being provided with an oven door positioned in the front wall of the oven; an ash chest positioned below the furnace and provided with an ash door; a secondary fire chamber positioned above the furnace and into which a throat leads from the back portion of the furnace; and substantially vertical cheek flues extending downwards from the secondary fire chamber on both sides of the oven door.  In order to improve the coefficient of efficiency of the fireplace and to eliminate the risk caused by the coals possibly falling on the operator from the oven door, the fireplace according to the invention is characterized in that an opening connecting the ash chest to the back portion of the furnace and to the secondary fire chamber is provided at the back of the furnace.
Patent CA-1309281-C (CA)
Title: Placement apparatus for lingual and buccal brackets
Inventor: CREEKMORE THOMAS D
IPC: A61C7/00
Filed: 1988-03-14
Granted: 1992-10-27
Abstract: PLACEMENT APPARATUS FOR LINGUAL AND BUCCAL BRACKETS            Abstract Apparatus  for  accurately  placing  orthodontic brackets on the lingual or labial surfaces of a model of a patient's maloccluded teeth in conjunction with an indirect bonding procedure or the like.  A model support incorporates an immovable base forming a spherical surface segment which receives a complimentary spherical surface segment of a movable model platform thus providing for rotation of the platform in all planes of space about a centroid region.  The maloccluded model is placed on the movable platform with a selected tooth thereof located at the central region of a sphere of which the spherical surface segments form a part.  A tooth orienting template is releasably supported in fixed relation to the base structure and is selected according to the centrally positioned tooth of the model.  The optimum position of the selected tooth relative to an optimum dental arch at the labial surface thereof is identified for bracket attachment to the labial surface.  For attachment of brackets to the lingual surface of the tooth the labial bracket position is translated to the lingual surface of the tooth such that the lingual archwire slot position corresponds to the optimum labial archwire slot  position.  Bracket holding and release apparatus is  employed to accurately position a bracket on the  selected  labial  or  lingual  surface  for temporary attachment thereof to the model.   With all of the brackets   attached to the model a conventional indirect bonding procedure may be carried out to accomplish bonding of the brackets to the enamel surfaces of the teeth of the patient.
Patent CA-1304857-C (CA)
Title: Process for reclaiming polyethylene terephthalate scrap contaminated with chlorine-containing polymer
Inventor: MEHRA VINODKUMAR
IPC: C08J11/06
Filed: 1988-03-17
Granted: 1992-07-07
Abstract: TITLE PROCESS FOR RECLAIMING POLYETHYLENE TEREPHTHALATE SCRAP CONTAMINATED WITH CHLORINE-CONTAINING POLYMER               ABSTRACT OF THE DISCLOSURE Polyethylene terephthalate scrap material containing on its surface a chlorine-containing polymer such as, for example, polyvinylidene chloride or polyvinyl chloride, can be recovered and reused by melt-blending it with a polymer from a defined class of ethylene copolymers containing an epoxy group, and melt processing the blend in the same manner as virgin polyethylene terephthalate.  The recovered and reprocessed polymer material has good physical properties and barrier properties.
Patent CA-1289528-C (CA)
Title: Framework for supporting and tying stacked waste paper and newspapers
Inventor: SMITH JUNE
IPC: B65B67/00
Filed: 1988-05-27
Granted: 1991-09-24
Abstract: ABSTRACT          A structure to facilitate the stacking of a significant number  of  newspapers  in  a  tidy  manner  and having  means  for facilitating  the  bundling  of  the  newspapers  stacked  in  the structure.  In a preferred embodiment, the structure includes a framework having an open generally box-like configuration made of wire rod, a support for a supply of string or other filament, and a cutting implement to trim the string to required lengths.          The framework is also provided with anchors to retain the string in an operative position ready for tying the newspapers or other paper stacked in the framework.
Patent CA-1283300-C (CA)
Inventor: LORIMOR LARRY W
IPC: F16N29/00
Filed: 1988-08-31
Granted: 1991-04-23
Abstract: Abstract of the Disclosure Lubricated Spline Joint A lubricated spline joint for providing a viscous damping function includes a first member defining an internal spline, a second member defining an external spline engaged therewith, a seal ring between the members at one end of the splines, and a radially inwardly facing chamber at the other end which is exposed to lubrication fluid.  The improvement features an internal barrier for assuring a fixed internal radius R and thus a preselected centrifugal pressure head of the fluid mass in the chamber and about the splines, and a plurality of venting passages located radially outwardly of the radius R for continually exhausting fluid from the splines as a result of centrifugal force so that fresh and/or less aerated fluid is circulated through the splines.
Patent CA-1326576-C (CA)
Inventor: BAMJI SOLI S
IPC: H01B3/44
Filed: 1988-09-26
Granted: 1994-01-25
Abstract: TITLE     ELECTRICAL TREE SUPPRESSION IN            HIGH-VOLTAGE POLYMERIC INSULATION                         INVENTORS                        SOLI S. BAMJI                 ALEKSANDER T. BULINSKI                    JOHN DENSLEY     ABSTRACT          Polymeric dielectrics which are exposed to highly divergent electric fields break down more quickly than expected because of the generation of ultra-violet radiation at defect points which degrades the polymer locally and leads to the formation of electrical trees in a polymeric insulation.   The use of ultra-violet stabilizers, preferably in combination with reduced concentration of oxygen in the polymer, significantly extends the time to initiation of electrical treeing by preventing photodegradation of the polymer.
Patent CA-1308284-C (CA)
Title: Optical systems with thin film polarization rotators and method for fabricating such rotators
Inventor: WOLFE RAYMOND
IPC: G11B7/135
Filed: 1988-10-18
Granted: 1992-10-06
Abstract: Abstract A method for fabricating a polarization rotator which includes a thin film waveguide exhibiting essentially zero linear birefringence in the absence of an externally applied stress, as well as an optical system incorporating said rotator, is disclosed.
Patent CA-1321287-C (CA)
Title: Connector for wiper blades
Inventor: SCORSIROLI MARCELLO
IPC: B60S1/40
Filed: 1988-11-25
Granted: 1993-08-17
Abstract: A B S T R A C T           The connector according to the invention comprises a body 2 provided with a generally hook-shaped lateral recess 7a, 7c and a laterally removable element 3 having the same shape as said recess 7a, 7c. For mounting the connector onto a hook-end or onto a straight-end wiper arm said arm (4) is first inserted into said recess 7a, 7c and the laterally removable element 3 is then screwed onto the body 2 of the connector. When the screw 13 of the element 3 is screwed into the portion 8 of the body 2 it pushes upwards, against the wiper arm 4, the hinged portion 10 of the body 2 of the connector and thus locks the wiper arm 4 in the connector.
Patent CA-1337318-C (CA)
Inventor: WATSON RICHARD WILLIAM
IPC: B01D53/50
Filed: 1988-12-21
Granted: 1995-10-17
Abstract: An acid gas stream comprising hydrogen sulphide is passed through a train of at least three stages 50, 60 and 70 of a process in which in each stage a portion of the hydrogen sulphide is burned using oxygen to support combustion, resulting sulphur dioxide reacts at a temperature greater than 800°C with residual hydrogen sulphide and the resulting sulphur vapour is condensed out of the gas mixture.  Typically, more than 90 mole% of the hydrogen sulphide is thus converted catalytically thus reducing or eliminating the need for downstream catalytic stages.
Patent CA-1318776-C (CA)
Title: Method of producing and modifying the properties of ceramic composite bodies
Inventor: CLAAR TERRY D
IPC: C04B35/58
Filed: 1988-12-21
Granted: 1993-06-08
Abstract: ABSTRACT This invention relates generally to a novel method of manufacturing a composite body.  More particularly, the present invention relates to a method for modifying the resultant properties of a composite body, by, for example, minimizing the amount of porosity present in the composite body.  Additives such as TaC, ZrC, ZrB2, VC, NbC, WC, W2B5 and/or Mo2B5 can be combined with a boron carbide material which is thereafter reactively infiltrated by a parent metal.  The composite body comprises one or more boron-containing compounds (e.g., a boride or a boride and a carbide) which is made by the reactive infiltration of molten parent metal into the boron carbide mass.  Particular emphasis is placed upon modifying the properties of a ZrB2-ZrC-Zr composite body.  However, the methods disclosed in the application are believed to be generic to a number of parent metals and preform materials.
Patent CA-1332563-C (CA)
Inventor: KURIHARA KAZUHIKO
IPC: B32B5/12
Filed: 1989-01-25
Granted: 1994-10-18
Abstract: ABSTRACT OF THE DISCLOSURE     A non-woven fabric having a strength which is comparable to the strength of woven fabric and a method of making such non-woven fabric are disclosed.  The non-woven fabric has a laminated structure composed of a warp web of random-laid non-woven fabric stretched lengthwise and hence having a greater strength in the lengthwise direction than in the transverse direction, and a weft web of random-laid non-woven fabric stretched transversely and hence having a greater strength in the transverse direction than in the lengthwise direction.  Filaments constituting each of the warp and weft webs are substantially free from molecular orientation and extendible at least two times the original length before the web is stretched.  Upon stretching of the web, the un-oriented filaments are substantially stretched to thereby cause molecular orientation therein.
Patent CA-1339664-C (CA)
Title: Lingnocellulose degradation
Inventor: FITZPATRICK STEPHEN W
IPC: C07D307/48
Filed: 1989-04-25
Granted: 1998-02-10
Abstract: A process for producing furfural and levulinic acid from lignocellulose includes subjecting a sample of lignocellulose to acid degradation at an elevated temperature for a minute or less, during which time at least fifty percent of the furfural that theoretically can be derived from the sample is generated.  The resulting mixture is then subjected to a second acid degradation at an elevated temperature to produce levulinic acid.  During the second acid degradation, furfural vapors are continuously collected from the mixture.
Patent CA-1339260-C (CA)
Title: Poultry mycoplasma antigens and recombinant vectors containing the gene as well as diagnostics and vaccines utilizing the same
Inventor: KODAMA KAZUMI
IPC: G01N33/569
Filed: 1989-05-31
Granted: 1997-08-12
Abstract: Antigen proteins of Mycoplasma gallisepticum, genes encoding the antigen protein, recombinant vectors integrated with the gene and hosts transformed with the vector are provided.  Diagnostics and vaccine using the antigen protein produced by such hosts are effective for poultry, especially chicken infected with Mycoplasma gallisepticum.  Vaccination can maintain poultry free of Mycoplasma gallisepticum infection.
Patent CA-1336685-C (CA)
Inventor: CARTER WILLIAM A
IPC: C12Q1/68
Filed: 1989-06-30
Granted: 1995-08-15
Abstract: Virus infections promoting Chronic Fatigue can be diagnosed by assessing the 2'-5'A/ RNase L pathway, including measurement of 2'-5'A oligonucleotide levels in the patient's circulating peripheral leucocytes, and comparing these resuls with those of healthy individuals.  Double-stranded RNAs, notably mismatched dsRNAs, when administered in appropriate amounts, increase the 2'-5'A and normalize the antiviral pathway in patients with Chronic Fatigue Syndrome and improve the clinical symptoms.
Patent CA-1338789-C (CA)
Title: 3,4-disubstituted phenyl heterocycles and their use
Inventor: HUTH ANDREAS
IPC: C07D409/10
Filed: 1989-07-07
Granted: 1996-12-10
Abstract: Compounds of general Formula I are disclosed        (I) wherein R1   is C1-4-alkyl, R3   is hydrogen, C1-4-alkyl, acyl, aryl, R5   is hydrogen, C1-4-alkyl, X  is oxygen, CH2 or NR4 with R4 = hydrogen, C1-4-alkyl and Y    is an aromatic or nonaromatic ring system which can optionally contain one or two hetero atoms and can be substituted, and the stereoisomers and their mixtures, as well as their preparation and use as medicinal agents.
Patent CA-1335024-C (CA)
Inventor: ARSENAULT GILLES J
IPC: C08C19/12
Filed: 1989-08-16
Granted: 1995-03-28
Abstract: The present invention relates to adducts of a partially hydrogenated acrylonitrile-butadiene rubber and a halogen selected from chlorine and bromine.  The preferred adducts are characterized by having a surprisingly low gel content of less than ten weight per cent, as measured by weight per cent insoluble in methyl ethyl ketone after sixteen hours at 30°C.
Patent CA-1314184-C (CA)
Title: Bandage
Inventor: JENSEN OLE R
IPC: A61F13/15
Filed: 1989-08-16
Granted: 1993-03-09
Abstract: ABSTRACT                   IMPROVED BANDAGE      A layer of plastic, either in film or coating form, is bonded to a sheet of non-woven material to form a base.  When film is used, it is preferably smaller in size than the non-woven material and affixed to the top surface thereof by an acrylic adhesive.  The plastic film is coated, on its exposed surface, with a layer of acrylic adhesive.  When the plastic is in the form of a coating, it is bonded to the bottom surface of the non-woven material.  A superabsorbent pad, smaller in size than the base, is wrapped in non-woven material and affixed to the base by the exposed adhesive layer.  The remaining portion of the exposed adhesive layer forms a border around the superabsorbent pad for adhering the bandage to the skin.
Patent CA-1331958-C (CA)
Inventor: TABLER CHARLES P
IPC: B65D6/00
Filed: 1989-08-17
Granted: 1994-09-13
Abstract: ABSTRACT OF THE DISCLOSURE A snap together picking container consists of two synthetic resin molded side members that are mirror images of each other, a folded blank of front, bottom and rear walls connected by living hinges and a sheet plastic top slid into mating grooves of the side members to abut against the rear wall.  With or without the top, like containers may be stacked upon each other, with side shifting prevented by abutment flanges on the top of one container nesting between the side members of the upper container. Picking is provided through an opening due to a shortened top and a front wall shorter than the rear wall.  Hook type snap assembly is provided between the walls and the side members having channels.  Multiple width containers may be constructed by using inserts in the mold producing folding blank, which folded blank is shaped so as to be produced by a two part rigid plate mold without undercuts.