baber/WOPTO huggingface dataset:
Patent CA-2022750-A1 (CA)
Title: Dialing pulse signature recognizing method and device
Inventor: PONTON MICHEL
IPC: H04Q1/453
Filed: 1990-08-07
Abstract: ABSTRACT OF THE DISCLOSURE            A method and device for recognizing a signature of dialing pulse present in a communication signal isolate from the latter signal the signature. The  so  isolated  signature  is correlated  with  a statistic model  obtained  from  a  large  number  of dialing pulse signatures to determine whether the isolated signature corresponds to a dialing pulse. During this correlation,  a first complex function representative of the isolated signature is calculated and  correlated  with  a  second  complex  function representative of the statistic model.  The result of the correlation is normalized and whether the isolated signature is a signature of dialing pulse is decided in function of this normalization.   The method and device can be used to convert into a tone frequency signal a series of dialing pulse signatures present in the communication signal and corresponding to a dialed digit.  Each recognized signature is counted in order to determine the number of signatures in the series and a tone signal having a frequency which is function of this counted number is generated.
Patent CA-2023387-A1 (CA)
Title: Polymer product for the selective absorption of dissolved ions
Inventor: RAINER NORMAN B
IPC: C08L1/00
Filed: 1990-08-16
Abstract: ABSTRACT OF THE DISCLOSURE      A water-swellable polymer product which may be physically bound to an open celled cellulosic sponge is produced by thermally induced amide-forming insolubilization of polyethyleneimine (PEI).  The polymer product has high affinity for the absorption of transition metal ions.  A cellulosic sponge containing a high add-on of the polymer product is permeable to water and substantially unaffected by water-borne suspended matter.
Patent CA-2023934-A1 (CA)
Inventor: JANES RICHARD
IPC: A63B51/00
Filed: 1990-08-24
Abstract: ABSTRACT OF THE DISCLOSURE         An improved tennis racket with a frame fabricated of graphite fibers in an epoxy resin matrix formed in a tubular configuration, the frame including a handle at one end; a head at the other end; beams therebetween coupling the head and handle; and a yoke cohered to the lower ends of the head to thereby generally form an ellipse, the head having a major axis  coextensive with the axis of the frame and being of a first dimension when measured at the widest point of the interior edge and having a minor axis transverse with respect thereto measured at the widest point of the interior edge of the frame, the minor axis to major axis aspect ratio being about 0.9:1, the beams being formed linearly and diverging from the central axis equally and oppositely at about 30 degrees for supporting the head, at their upper ends, at regions widely spaced from the axis, the area within the head being between about 95 and 105 square inches.  Also disclosed is a frame for such tennis racket.  Also disclosed is a method of stringing such frame with the horizontal strings at a higher pull tension than the vertical strings.
Patent CA-2024873-A1 (CA)
Inventor: MASTOV EDUARD
IPC: A61G5/04
Filed: 1990-09-07
Abstract: ELECTRIC DRIVE ATTACHMENT FOR WHEELCHAIRS       ABSTRACT OF THE DISCLOSURE       An  electric  drive  attachment  for  a  wheelchair.   The  drive includes an electric motor constituting the input member of the drive, a wheel  adapted to touch the ground and to drive the wheelchair by frictional  contact with the ground,  and the wheel constituting the output member of the drive.  The input member and the output member constitute an integral unit carried by a sleeve-like member slidably mounted on a first portion of a mounting member attachable to the wheelchair,  and  first means  are provided to allow the unit to be shifted to, and arrested at,  at least two different positions along the first portion of the mounting member.  In the first position the unit is closer to a reference point on the wheelchair and in the second position the unit is more remote from the reference point.
Patent CA-2025995-A1 (CA)
Title: Process for producing a large calibre plastic pipe and an extrusion tool for the process
Inventor: DIKIS BYRON
IPC: B29C48/32
Filed: 1990-09-21
Abstract: A process for production of large calibre plastic tube, in which a hollow thermoplastic profile of rectangular cross-section is extruded and is coiled on a drum helically with contiguous turns with adequate deformability, and in which during the coiling operation the turns are welded together at the contact surfaces by a butt-welded seam under axial pressure and heat. The hollow plastic profile is moulded in an extrusion tool to form a multi-cell profile having outer profile walls and cell-forming webs and at the same time and/or thereafter, by internal cooling of the outer profile walls and the cell-forming webs, is sized and given a design strength which is stable up to a predetermined critical pressure. The calibrated mufti-cell profile is again heated at the contact surfaces to the welding temperature of the thermoplastic material. The butt-welded seam between the turns is welded with an axial pressure below the critical pressure of the design strength. Extrusion tools for performing the process are also described.
Patent CA-2026722-A1 (CA)
Inventor: INOMATA MASAMITU
IPC: C07C255/47
Filed: 1990-10-02
Abstract: A norcamphane dicarbonitrile is produced by hydrocyanation of bicyclo [2, 2, 1]-5-heptene-2-carbonitrile in the presence of a zerovalent nickel complex catalyst and Lewis acid and treating the resulting crude product by contact with a catalyst treating agent,
Patent CA-2030049-A1 (CA)
Title: Single-crystal diamond of very high thermal conductivity
Inventor: ANTHONY THOMAS R
IPC: C01B31/06
Filed: 1990-11-15
Abstract: SINGLE-CRYSTAL DIAMOND OF VERY HIGH        THERMAL CONDUCTIVITY      Abstract Single-crystal diamond consisting of isotopically pure carbon-12 or carbon-13 has been found to have a thermal conductivity higher than that of any substance previously known, typically at least 40% higher than that of naturally occurring IIA diamond.  It may be prepared by a method comprising an initial step of low pressure chemical vapor deposition employing an isotopically pure hydrocarbon in combination with hydrogen, followed by comminution of the diamond thus obtained and conversion thereof to single-crystal diamond under high pressure conditions.
Patent CA-2030632-A1 (CA)
Title: Chlorinator apparatus
Inventor: MADDOCK ROBERT
IPC: C02F1/467
Filed: 1990-11-22
Abstract: IMPROVED CHLORINATOR APPARATUS                 ABSTRACT OF THE DISCLOSURE A chlorinator employing a vertically tiered arrangement wherein a chassis unit vertically and removably mounts on a lower sodium chamber and contains a cone-shaped structure which depends into the lower chamber and disposes an attached membrane and cathode at angles to the horizontal within said lower chamber.  The chassis unit further includes an attached anode within the conical surface, and integral handles and electrical interconnection points.  The chassis is rigidly attached to an upper pipe section with which a lid slidably interfits.
Patent CA-2032977-A1 (CA)
Title: Photo-curable urethane-containing compositions
Inventor: GERKIN RICHARD M
IPC: C08F299/06
Filed: 1990-12-21
Abstract: PHOTO-CURABLE  URETHANE-CONTAINING COMPOSITIONS            ABSTRACT OF THE INVENTION          Photocurable composition comprising urethane compound, an ethylenically unsaturated compound, and an aromatic ketone photosensitizers with optionally additional photoinitiator that functions through a hydrogen abstraction mechanism and its use in making cured products.
Patent CA-2033435-A1 (CA)
Title: Expandable styrene polymers, and aromatic-resistant foams produced therefrom
Inventor: HAHN KLAUS
IPC: C08J9/16
Filed: 1990-11-02
Abstract: - 12 -          O.Z. 0050/41217 Abstract of the disclosure: Expandable styrene polymers which contain from 10 to 90 % by weight of a crosslinked styrene-diene copolymer containing from 2 to 45 % by weight of the diene, and from 1 to 10 % by weight of a C3-to C6-hydrocarbon as blowing agent can be processed to give foams which have high resistance to aromatics.
Patent CA-2035493-A1 (CA)
Title: Glass substrate with controlled low-friction surface
Inventor: TSAI HSIAO-CHU
IPC: G11B5/738
Filed: 1991-02-01
Abstract: ABSTRACT      A  method  for  producing  a  low-friction  thin-film medium  on  a  glass  substrate,  by  micro-roughening the surface of the glass substrate with plasma etching, under conditions which produce a desired surface density and depth of microscopic surface irregularities.  Also dis-closed are a glass substrate and thin-film medium formed in accordance with the method.
Patent CA-2036618-A1 (CA)
Inventor: MORIMOTO AKIRA
IPC: C07D495/04
Filed: 1991-02-19
Abstract: Novel fused thiophene derivatives of the formula (I): (see formula I) wherein W is (see formula II)  or (see formula III) R1 and R2 are each. H, halogen, cyano, nitro, acylamino, or a hydrocarbon residue; R3 is H, optionally substituted alkyl or alkenyl, or -COD wherein D is H, alkoxy, hydroxy, halogen, or optionally substituted amino; R4 is H, halogen or nitro;      R5 is a residue capable of forming or convertible into an anion; R6 is H or optionally substituted alkyl or alkenyl; R7 is a hydrocarbon residue; A is a bond or a spacer; and n is 1 or 2; have potent angiotensin II antagonist activity and antihypertensive activity, thus being useful as therapeutic agents for treating circulatory system diseases.
Patent CA-2037709-A1 (CA)
Title: Use of zinc calcium hydroxide, lecithin and pao as an adjuvant for antigen solutions, and antigen solutions treated with an adjuvant of this type
Inventor: BERNHARDT DIETER
IPC: A61P37/00
Filed: 1991-03-07
Abstract: A process for treating antigen solutions with an adjuvant is described, in which process a zinc hydroxide/calcium hydroxide gel and, where appropriate, additionally a lecithin and, where appropriate, additionally a poly-alphaolefin is added to the antigen solution.
Patent CA-2039561-A1 (CA)
Title: Method of producing polymers
Inventor: SHIMOKAWA YOSHIHARU
IPC: C08F10/10
Filed: 1991-04-02
Abstract: Abstract of the Disclosure A method of producing a polymer of a cationi-cally polymerizable vinyl monomer by polymerizing at least one cationically polymerizable vinyl monomer using a polymerization initiator system composed of an organic compound having a functional group represented by formula (I) below                   (I) where R1 represents a hydrogen atom, an alkyl group, or an aryl group; R2 represents an alkyl group, or an aryl group; X represents a halogen atom, an alkoxy group, or an acyloxy group, and a Lewis acid, wherein said polymeri-zation is carried out in the presence of a phosphorus-containing compound selected from the group consisting of a phosphine, a phosphine oxide, a phosphite, and a phosphate.
Patent CA-2039768-A1 (CA)
Title: Broiling accessory device
Inventor: ALBSMEIER ERNST
IPC: A47J37/06
Filed: 1991-04-04
Abstract: IMPROVED BROILING ACCESSORY DEVICE               ABSTRACT OF THE DISCLOSURE    Broiling tray device for use in particular conjunction with gas or charcoal grills.  The tray device is formed from a thin sheet of stainless steel which is generally elongated and rectangular.  The sheet is bent and formed to have a plurality of corrugations into alternate peaks and valleys.  The valleys are provided with a plurality of apertures of small enough overall geometric dimension to facilitate the dripping of hot fat therethrough but of small enough overall geometric configuration to prevent flame-up therethrough.  The apertures may be arranged in a pattern of ranks and files in the valleys so as to distribute the fat drippings.  The peaks may be truncated to provide flat bearing grilling surfaces for meat or other food products.  The structure may be further provided with generally diamond shaped or rectangular crimps for additional grilling surfaces or both and these may also be arranged in pre-selected patterns. The sheet is provided with a rolled peripheral edge for strength.
Patent CA-2041366-A1 (CA)
Title: Recording and/or reproducing apparatus for using magneto-optical disc
Inventor: YAMATANI WATARU
IPC: G11B11/10
Filed: 1991-04-26
Abstract: A magneto-optical disc recording and/or reproducing apparatus having an external magnetic field generating means for supplying an external magnetic field to a magneto-optical disc, a spacer sheet disposed relative to the magneto-optical disc at its surface side opposing to the external magnetic field generating means and a moving means for moving the external magnetic field generating means in the direction in which the external magnetic field generating means is isolated from and brought in contact with the magneto-optical disc, in which the moving means moves the external magnetic field generating means to the position at which the external magnetic field generating means comes in contact with the magneto-optical disc via the spacer sheet when an information signal is recorded on the magneto-optical disc, whereas the moving means moves the external magnetic field generating means to the position distant from the magneto-optical disc when the information signal recorded on the magneto-optical disc is reproduced.
Patent CA-2043626-A1 (CA)
Title: Recovery of tritium and deuterium from their oxides and intermetallic compound useful therein
Inventor: BOFFITO CLAUDIO
IPC: G21F9/02
Filed: 1991-05-31
Abstract: There is described a process for the recovery of deuterium and tritium from their oxides, such has heavy water and tritiated water, comprising the steps of reacting the oxides of deuterium and tritium with an intermetallic compound having a formula ZrM2, where M is a transition metal chosen from the group comprising Cr, Mn, Fe, Co and Ni such that it sorbs oxygen and released deuterium and tritium. The reaction preferably occurs by contacting the impure gas with the ZrM2 alloy as defined above, in the form of a compressed powder. A preferred alloy is the intermetallic ternary compound ZrMnFe.
Patent CA-2045027-A1 (CA)
Inventor: BELL JOHN F
IPC: H04Q3/58
Filed: 1991-06-19
Abstract: Apparatus is disclosed for incorporation into a key telephone system control unit, in at least one station port, for operating an at least one key type set and an at least one tip and ring device simultaneously bridged onto the same station port without the use of any special service circuits or adaptors. The ability to signal alerting independently via ringing signal on a TR-pair, via messages indicating alerting transmitted on a service pair for a key set or via both techniques simultaneously is also disclosed. Further, the alerting ability disclosed in combination with control by a key system controller of the access of a key set to voiceband communications over the TR-pair allows for incorporation of additionalfeatures into a key telephone system. These features include the following: ringspecific applications relating to an external event; direct transfer of calls to the transferor station port; calling other sets on the same station port; MEWPRIC (Multiple Extension With Personal Ringing on Incoming Calls) operation, i.e., a party line type of operation where the TR device and the key set sharing a single station port of station ports 103 are assigned different endpoint addresses; prevention of "barge in", i.e., bridging, by a key type set onto a call to a TR device; time phasing of rings to allow for a coverage operation; and fax trouble detection.
Patent CA-2047056-A1 (CA)
Title: Herbicidal compounds
Inventor: MUNRO DAVID
IPC: C07C235/56
Filed: 1991-07-15
Abstract: ABSTRACT HERBICIDAL COMPOUNDS       Compounds of the formula     (I) wherein X1, X2 and X3 each independently represents hydrogen, halogen or alkyl; n is 0 or 1; Z represents hydrogen or halogen or an amino, alkyl, haloalkyl, alkylthio or alkoxy group or a phenoxy group optionally substituted by haloalkyl; A represents CH or N: Y1 and Y2 each independently represents hydrogen, halogen, alkyl, haloalkyl, alkoxy or haloalkoxy; and W represents hydrogen or, or when A is CH and at least one of Y1 and Y2 is not hydrogen or when A is N, hydrogen or halogen; with the proviso that when A represents N, then each of Y1 and Y2 represents hydrogen, have herbicidal properties.  The invention also provides a process for their preparation and their use as herbicides.
Patent CA-2048546-A1 (CA)
Title: Absorbents and a method for their production
Inventor: MOBBS DAVID B
IPC: B01J20/20
Filed: 1991-08-07
Abstract: Abstract Adsorbents and a process for their production Adsorbents suitable for use to remove aromatic or polyaromatic hydrocarbons from liquids such as oils may be produced from an acid-activated siliceous clay containing adsorbed oil by treating to carbonise the oil and to activate the carbon so produced on the surface of the clay. The carbonisation and activation steps may be conducted by heating in the presence of an activating agent which may be zinc chloride.  Preferably zinc chloride activated material is subsequently steam-treated.      The invention is particularly useful to reduce the content of hazardous polyaromatic hydrocarbons, such as benzo(a)pyrene, from edible oils.
Patent CA-2050877-A1 (CA)
Title: Combination photographic negative and proof holder
Inventor: GAETANO RALPH R
IPC: G03C11/00
Filed: 1991-09-06
Abstract: ABSTRACT OF THE DISCLOSURE         A film negative and matching proof are held for storage in a receptacle formed from a unitary body of flexible material folded to form panels positioned in overlying relation to form a first pocket and a second pocket.  One panel is common to both pockets and serves as a boundary layer between the pockets positioned in back-to-back relation-ship.  One pocket is closed along opposite lateral sides and at one end portion with the opposite end portion remaining open to receive the negative protected against undesired contact. The second pocket is posi-tioned to receive the proof along an open end portion and an open lateral side with the opposite end portion and lateral side being closed to facilitate ease of insertion and removal of the proof.
Patent CA-2051665-A1 (CA)
Title: Expandable vertical prosthetic rib
Inventor: CAMPBELL ROBERT M JR
IPC: A61B17/80
Filed: 1990-04-13
Abstract: The invention includes a prosthetic rib which is adjustable in length through relatively minor surgical pro-cedures subsequent to initial implantation along with methods for using same in the treatment of chest wall deformities and scoliosis and in immobilizing fractured ribs. The prosthetic rib is designed for secure attachment to existing natural ribs in a manner which minimizes constricture thereof, provides substantial torsional stability, and permits the prosthesis to accommodate traumatic impact thereto while resisting fracture of the associated natural ribs.
Patent CA-2051779-A1 (CA)
Title: Azide-terminated azido compound
Inventor: WILSON EDGAR R
IPC: C07B61/00
Filed: 1991-09-18
Abstract: Abstract of the Invention G1ycidal  azide  polymer  azide  prepared  by  reacting  in  a  refluxing azueous  solution,  polyepichlorohydrin with  sodium  azide  and  a  phase transfer catalyst such as dimethyl-dicoco-ammonium chloride.   0670j
Patent CA-2052210-A1 (CA)
Inventor: MIKESKA KURT R
IPC: B32B18/00
Filed: 1991-09-25
Abstract: TITLE METHOD FOR REDUCING SHRINKAGE DURING FIRING OF CERAMIC BODIESw Abstract A method for reducing X-Y shrinkage during firing of ceramic bodies in which a flexible constraining layer, which becomes porous during firing, is applied to the ceramic body such that the flexible constraining layer conforms closely to the surface of the unfired ceramic body as the assemblage is fired.
Patent CA-2052695-A1 (CA)
Title: Inertia switch
Inventor: WALLACH MARK
IPC: H01H35/14
Filed: 1991-10-03
Abstract: INERTIA SWITCH                           ABSTRACT           An inertia switch for sensing shock or vibra-tions  imparted  to  an  object  to  which  said  switch  is secured.    The switch comprises a pair of spaced-apart, electrically-conductive contact plates.  Each plate has at least one cavity therein.   The plates are held in fixed, spaced,   parallel  relationship to one another with the cavities facing and aligned with each other to constitute at least one opposed pair of cavities.   A metal ball is loosely captive between the at least one opposed pair of cavities so that the ball,  when in a condition fo rest, establishes four conductive contact points,  two with each of the plates.
Patent CA-2054543-A1 (CA)
Inventor: NAKAGAWA SHINICHI
IPC: H02M3/07
Filed: 1991-10-30
Abstract: A DC-DC converter includes first and second capacitors coupled in parallel, a switching part for controlling the first and second capacitors so that the first capacitor is charged by an input voltage and the second capacitor is charged by a discharging of the first capacitor, an output voltage being obtained at one end of the second capacitor, and the switching part including a discharge path through which the second capacitor is discharged.  An output voltage detection units detects the output voltage and determines whether or not the output voltage satisfies a predetermined condition.  A discharge path breaking units breaks the discharge path when the output voltage detection unit determines that the output voltage satisfies the predetermined condition, so that the first capacitor is prevented from being discharged through the discharge path.
Patent CA-2056817-A1 (CA)
Title: Color selector for four-color offset printing, and method of creating it
Inventor: ABRAMSON STEVEN J
IPC: G03F3/00
Filed: 1991-12-02
Abstract: A color swatch arrangement for use in selecting colors for four-color offset printing, and a method for creating such an arrangement, involves dividing the visible spectrum into a plurality of distinct hues, and determining the proportions of yellow, red, and blue dot densities needed to create color swatches of each distinct hue. A series of lighter-and-lighter tint swatches associated with each distinct hue are created by reducing each of the yellow, red, and blue dot densities in steps. A series of darker shade swatches is created by adding a proportion of black dot density to each distinct hue and all the stepped lighter tints created from it, and a series of darker-and-darker shade swatches are produced by adding greater proportions of black dot density in stages to all the stepped lighter tints.
Patent CA-2056950-A1 (CA)
Title: Thermal print head
Inventor: OTA SHIGEO
IPC: B41J2/345
Filed: 1991-12-04
Abstract: A thermal print head includes a head circuit board, a flattened  flexible member  partially overlapped  on the head circuit board for electrical connection thereto in a limited region which is sufficiently smaller in length than the head circuit board, and a pressure applying member for pressing the flexible member into contact with the head circuit board in the limited region.   The pressure applying member is in the form  of a  plate spring having a presser  portion which is elastically  deformed for pressing the  flexible member into contact with the head circuit board in the limited region by elastic restoring force of the spring.                        :
Patent CA-2059301-A1 (CA)
Title: Transrectal probe
Inventor: CATHAUD MURIEL
IPC: A61F7/12
Filed: 1991-04-05
Abstract: ABSTRACT OF THE DISCLOSURE           The  invention  relates to a device  forming  transrectal probe.          This   device,   forming   transrectal  probe   (10)   is characterized in that it comprises a hollow probe body (12) made of a   flexible  self-supporting  polymer  material  whose  degree  of flexibility  is  determined so as to enable it to comply  with  the shape  of the rectum (R) while having substantially no  compression effect  on  the rectum (R) when inserted therein. Preferably,  this degree  of flexibility is defined by a harness on the Shore A scale of less than 90.          The  invention  makes it possible to obtain an  accurate, safe  and  reliable  positioning  of  a  detection  or  therapeutic treatment  instrument,  level  with  the organ to  be  observed  or treated, in particular the prostate (P).