baber/WOPTO huggingface dataset:
Patent CA-2054757-C (CA)
Title: Process and triggering system for the anionic polymerization of acrylic monomers
Inventor: VARSHNEY SUNIL K
IPC: C08F293/00
Filed: 1990-06-05
Granted: 1999-04-27
Abstract: The initiating system for the anionic polymerisation of acrylic monomers, and where necessary, vinyl comonomers, including at least one R-M initiator in which M = a metal chosen from among the alkaline and alcaline earth metals and R = an alkyl with a linear or branched chain at C2-C6 or aryl or arylalkyl, is characterised by the fact that the polymerisation takes place in the presence also of at least one R1OM1 alkaline metal alcoholate, in which R = an alkyl with a linear or branched chain at C1-C6 or aryl or aryalkyl and M1 = an alkaline metal, on condition that when M1 is lithium, then R = an aryl or arylalkyl. Said process for the polymerisation of primary, secondary, or tertiary alkyl acrylates, and possibly of vinyl comonomers, is characterised by the fact that the polymerisation takes place in the presence of an initiating system as described above.
Patent CA-2055031-C (CA)
Title: Method and apparatus for controlling the transfer of tubular members into a shelter
Inventor: MOCHIZUKI DAVID ALAN
IPC: E21B7/00
Filed: 1991-11-06
Granted: 1996-01-16
Abstract: A portable drilling apparatus designed to be used in environmentally severe locations, such as the Arctic, includes provisions for heating various portions thereof, including a pipe shelter.  The pipe shelter is used to store, warm, and clean the drill pipe and/or casing prior to insertion in the well.  Thus, to provide access for loading the drill pipe and/or casing into the pipe shelter, a significantly large opening must be provided.  The large opening necessarily results in significant infiltration of arctic air and loss of heated air, thereby increasing the difficulty of maintaining the pipe shelter at a comfortable working temperature.          Accordingly, a high-speed spool or window-shade style door is employed to seal the opening against large scale transfers of heated and cold air.  Further, an indirect fired air-heater having a capacity sufficient to maintain a positive pressure in the pipe shelter is also used.  The positive pressure within the pipe shelter causes warm air to exit rapidly when the door is opened, and thereby reduces the inflow of arctic air.  Accordingly, the combination of the high-speed door and positive pressure environment within the pipe shelter combine to provide a relatively stable and comfortable temperature environment.
Patent CA-2060423-C (CA)
Title: Line markers for tennis courts and the like
Inventor: WINTER CYRIL D
IPC: A63C19/06
Filed: 1992-01-31
Granted: 1996-07-09
Abstract: Disclosed is a line marker for tennis courts and the like and particularly for clay courts.  The line marker consists of a generally T-shaped strip of material of predetermined color and length.  The T-shaped material has a vertical portion and a horizontal portion, the vertical portion being of a continuous length of material whereas the horizontal portion comprises a plurality of spaced laterally extending elements,  Preferably the horizontal portion is made with alternate spaced elements, these elements being formed by cutting laterally about half way into a strip of material and alternately folding the elements at 90 to form the horizontal portion, the remaining part of the strip forming the vertical portion.
Patent CA-2065752-C (CA)
Title: Absorbent pads and process therefor
Inventor: LAURITZEN NELS JENS
IPC: B32B27/12
Filed: 1992-04-10
Granted: 2004-01-06
Abstract: A continuous process for manufacturing absorbent pads is disclosed which comprises providing a fibrous web material and applying a fluid absorbent cover and a fluid impermeable barrier layer thereto in situ. In preferred embodiments, the pads are securable to fluid-protected surfaces by means of an adhesive on the barrier layer's outer surface.
Patent CA-2066403-C (CA)
Title: Transmucosal dosage form
Inventor: HAGUE BRIAN
IPC: A61J7/00
Filed: 1990-08-03
Granted: 1998-04-14
Abstract: Compositions and methods of manufacture for producing a medicament composition capable of absorption through the mucosal tissues of the mouth, pharynx, and esophagus. The present invention relates to such compositions and methods which are useful in administering lipophilic and nonlipophilic drugs in a dose-to-effect manner such that sufficient drug is administered to produce precisely a desired effect. The invention also relates to manufacturing techniques that enable therapeutic agents (30) to be incorporated into nondissolvable drug containment matrixes (34) which are capable of releasing the drug within a patient's mouth. An appliance or holder (36) is preferably attached to the drug containment matrix (34). Employing the present invention the drug (30) may be introduced into the patient's bloodstream almost as fast as through injection, and much faster than using the oral administration route, while avoiding the negative aspects of both of these methods. The nondissolvable drug containment matrix (34) may include permeation enhancers to increase the drug absorption by the mucosal tissues of the mouth. The matrix composition (34) may also include pH buffering agents to modify the salival pH thereby increasing the absorption of the drug (30) through the mucosal tissues.
Patent CA-2066419-C (CA)
Title: Gel formulations for hazardous products
Inventor: BRIAN EDWARDS DAVID
IPC: A01N39/04
Filed: 1991-07-18
Granted: 1997-06-17
Abstract: A water dispersible organic gel, which is a continuous system, comprising effective amounts of hazardous product, a water soluble or water dispersible surfactant which contains a non ionic surfactant and optionally an anionic or amphoteric surfactant and a gelling agent having if solid, a particle size less than 100 microns. The gels are especially suitable for use in water soluble or water dispersible bags rendering the hazardous product safer to handle and for the environment.
Patent CA-2069356-C (CA)
Title: Adjustable filter for differential microphones
Inventor: ELKO GARY WAYNE
IPC: H04R3/08
Filed: 1992-05-25
Granted: 1997-05-06
Abstract: A method and apparatus for providing a differential microphone with a desired frequency response are disclosed. The desired frequency response is provided by operation of a filter, having an adjustable frequency response, coupled to the microphone. The frequency response of the filter is set by operation of a controller, also coupled to the microphone, based on signals received from the microphone. The desired frequency response may be determined based upon the distance between the microphone and a source of sound, and may comprise both a relative frequency response and absolute output level. The frequency response of the filter may comprise the substantial inverse of the frequency response of the microphone to provide a flat response. Furthermore, the filter may comprise a Butterworth filter.
Patent CA-2076011-C (CA)
Title: Purification of aqueous liquor
Inventor: PAYNE GEOFFREY L
IPC: C02F1/56
Filed: 1991-06-20
Granted: 2001-10-02
Abstract: An aqueous suspension of coagulatable material is coagulated by adding polymeric coagulant to the suspension and then separating the resultant coagulated material from the liquor. The coagulatable material may be present in the aqueous suspension as a suspension of suspended solids or as colloidally dispersed solids. The suspension may be coal tailings or other aqueous (gen-erally mineral) suspension. The polymeric material must be a low molecular weight, highly ionic, polymeric material. It is added to the aqueous suspension while in the form of polymeric particles having a size mainly above 30 µm and that will dissolve into the suspension and coagulate the coagulatable material. A counterionic, high molecular weight, flocculant is generally added sub-sequently in order to flocculate the coagulated material.
Patent CA-2078325-C (CA)
Inventor: GROSREY JEAN
IPC: A61C5/40
Filed: 1992-01-17
Granted: 2002-12-10
Abstract: A body (5) is sealably fitted to the opening of a cavity (13) to be cleaned. A water hose (7, 8, 10, 11) is arranged in said body and its inlet (7) is linked to the outlet (4) of a single-acting sound-frequency pump (1) producing alternate phases of drawing a cleaning liquid out of a supply container and compressing it towards the body (5). The outlet (8) of the water hose is connected to a liquid discharge tube (6). The hose's suction tube (11) extends into said cavity (13), where it periodically generates partial vacuums and causes vapour bubbles to be formed. The length of the discharge tube (6) is such that, in operation, a certain mass of liquid flows back thereinto during the suction stroke of each cycle of the pump (1), thereby causing bubble implosion and cavitation in said cavity (13). This apparatus is simple, highly effective and energy and cost efficient.
Patent CA-2078938-C (CA)
Title: Apparatus for dyeing tissues
Inventor: MIZUSAWA YOSHITADA
IPC: B08B9/02
Filed: 1992-09-23
Granted: 1999-10-26
Abstract: Apparatus for dyeing tissues sampled from a living body for the purpose of observing immunoreaction of the tissues has a dyeing tray with a plurality of plateaus arranged in parallel disposition. A slide is so placed over each plateau that a wedge-shaped gap of capillary dimension is formed between the plateau and the undersurface of the slide to which a sampled tissue is attached. A liquid drip surface and a liquid discharge port are formed at one end of the top surface of each plateau. A liquid delivery port is formed on a side wall of the tray so as to communicate with the liquid discharge port. The liquid delivery port and the drip surface are always exposed. A dyeing liquid or a rinsing liquid is dripped onto the exposed drip surface and spreads into the gap for dyeing the tissue or rinse the relevant parts. After the dyeing or rinsing, the used liquid is sucked and discharged by way of the liquid delivery port. Because of the exposure of the drip surface and the liquid delivery port, the operation is easy and the dyeing tray can also be used for manual dyeing. A bank between the liquid discharge port and the drip surface prevents direct flow of the liquid therebetween.
Patent CA-2079727-C (CA)
Title: Ink jet apparatus capable of practicing and improved recovery operation
Inventor: KANEKO MINEO
IPC: B41J2/18
Filed: 1992-10-02
Granted: 1998-04-07
Abstract: An ink jet apparatus performs recording by ejecting from the head portion the ink which is contained in an exchangeable ink jet cartridge for the apparatus to form desired images on a recording medium.  The apparatus performs suction recovery operation for the head portion in the non-installation state where the ink jet cartridge is removed from the apparatus.  With this suction recovery, all the ink in the ink passage from the installation portion for the ink jet cartridge to the recording head is exhausted from the head portion; hence making it possible to remove bubbles remaining in ink totally and easily without any additional components and any resultant contamination in the nozzles provided for the recording head.
Patent CA-2079882-C (CA)
Title: Confocal microscope
Inventor: HARRIS MARTIN RUSSELL
IPC: G02B21/08
Filed: 1991-04-05
Granted: 2001-07-31
Abstract: A tandem scanning confocal epi-illumination microscope com-prising a light source (1), which may be a laser, for supplying a light beam (2) to a light condenser (18) which. may be a lens. Condenser (18) focuses the light onto object (20) to be examined so as to illumi-nate a point observational field on or within the object. Reflected, flu-orescent or scattered light from the illuminated point field is collected by condenser (18) and transmitted to a returning light receiver (36) which may be in the form of a camera (37) carrying photographic film (38). The outgoing light passing from light source (I) to condenser (18) and the returning light are transmitted via optical fibres and a light se-parator (5) to divert the returning light to receiver (36). The outgoing illuminating light is subjected to scanning movements to scan the ob-ject and the returning light is subjected to similar or tandem scanning movements to scan the photographic film (38). In one embodiment the scanning movements of the illuminating and returning light are pro-vided by two sets of scanning mirrors (16; 17 and 34, 35). In other ar-rangements, tandem scanning may be achieved by a pin hole or slit in a light screen located at an intermediate focal plane.
Patent CA-2086692-C (CA)
Inventor: ELKO DAVID A
IPC: G06F12/08
Filed: 1993-01-05
Granted: 1996-12-31
Abstract: Apparatus  and  method  insuring  that  data  objects used to maintain state information for  shared data at a local  central  processing complex  (CPC)  is  coherent with respect  to  state  information maintained  at  a  structured external  storage  facility  (SES)  over  a  link  is  valid. An  error  detector  is  attached  to  the  CPC  side  of  the link  for  detecting  errors  on  the  link,  and,  when  an error  is  detected,  setting  a  error  state  pending  (ESP) latch to indicate that the link has failed and that the shared  data  in  the  local  data  object  may  be  invalid because  a  message  invalidating  the  data  may  not  have been   received   by   the   CPC.    In   data   processing operations,  the  ESP  latch  is  interrogated by  a  central processor  in  the  CPC  to  determine  the  health  of  the message path to the SES facility.   A local cache vector reflecting the validity of the  shared data in the  local cache  may  then  be  interrogated  to  determine  if  the shared data in the  local  cache  is valid.   If a healthy path  has  continuously  existed  and  the  vector  indicates that  the  local  cache  data  is  valid,  the  integrity  of the data can be relied on.
Patent CA-2090009-C (CA)
Title: Methods for inhibiting rejection of transplanted tissue
Inventor: FAUSTMAN DENISE
IPC: A61K35/12
Filed: 1991-08-27
Granted: 2002-07-16
Abstract: A method for inhibiting rejection by a recipient animal of a transplanted tissue, said method comprising modifying, elimi-nating, or masking an antigen which, when present on the surface of a cell of said tissue, is capable of causing a T-lymphocyte-mediated response in said animal, to inhibit antigen-mediated interaction between said cell and a T-lymphocyte of said animal without causing lysis of said cell:
Patent CA-2090392-C (CA)
Title: Coupling of antigens and antibodies to non-fixed erythrocytes
Inventor: LAPIERRE YVES
IPC: G01N33/555
Filed: 1993-02-25
Granted: 2000-01-11
Abstract: 1. In order to determine an analyte in an aqueous sample solution by agglutination of non-fixed erythrocytes, one proceeds according to the present invention in such a way that (a) erythrocytes are incubated with one or several antibodies or/and antibody derivatives which do not lead to premature agglutination whereby the antibodies or/and antibody derivatives are directed towards one or several antigens on tie erythrocyte membrane and whereby before or after incubation with the erythrocytes the antibodies or/and antibody derivatives are coupled to a first binding partner of a high affinity binding pair, (b) a second binding partner of the high affinity binding pair is incubated with the treated erythrocytes from (a) whereby the second binding partner is chosen such that it has more than one binding site per molecule for the first binding partner, (c) the first binding partner of the high affinity binding pair which is coupled with the analyte or/and an antigen-active determinant of the analyte is incubated with the treated erythrocytes from (b), (d) a sample solution which has been treated with an antibody or antibody derivative directed towards the analyte is incubated with the treated erythrocytes from (c) and (e) the absence or presence of the analyte in the sample solution is determined on the basis of the occurrence or absence of an agglutination reaction.
Patent CA-2092193-C (CA)
Inventor: CONNOR DANIEL STEDMAN
IPC: C09K23/22
Filed: 1991-09-25
Granted: 1998-08-18
Abstract: Méthode améliorée pour préparer un surfactif à base de glucamide linéaire, consistant à faire réagir une N-alkylglucamine, p. ex. la N-méthylglucamine, avec un ester gras, p. ex.  l'ester méthylique de noix de coco, en présence d'un catalyseur à forte concentration, choisi parmi les substances suivantes : phosphate de trilithium, phosphate de trisodium, phosphate de tripotassium, pyrophosphate de tétrasodium, pyrophosphate de tétrapotassium, tripolyphosphate de pentasodium, tripolyphosphate de pentapotassium, carbonate de lithium, carbonate de sodium, carbonate de potassium, tartrate de disodium, tartrate de dipotassium, tartrate de potassium et de sodium, citrate de trisodium, citrate de tripotassium, silicates basiques de sodium, silicates basiques de potassium, aluminosilicates basiques de sodium, aluminosilicates basiques de potassium, et leurs mélanges.
Patent CA-2093539-C (CA)
Title: Knife valve
Inventor: ROUSSEL RENALD
IPC: F16K3/12
Filed: 1993-04-06
Granted: 1995-01-17
Abstract: KNIFE VALVE  Abstract A knife valve comprises a body defining a valve seat and a knife blade longitudinally movable by a cylindrical stem in the body for opening and closing a lateral flow passage defined therethrough. The body includes a bonnet with the stem extending therethrough and with circular packing rings being disposed therein around the stem.  The valve seat is located  on  a  first  side  of  the  blade  and  in operative proximity thereto.   The stem includes a lower head portion which defines an angular surface, whereas a top portion of the blade defines a slot forming an angular surface parallel to the angular surface  of  the  stem  head.    The  stem  head  is engageable  in the  slot with the  angular  surfaces thereof being in sliding contact.   Therefore, when the blade is in its closed position, a longitudinal force  exerted  by  the  stem  on  the  blade  is transferred into a lateral force oriented towards the seat, thereby forcing the blade against the seat in  a  tight  bidirectional  seal  under  a  positive torque.   Angular lugs provided on a lower second side of the blade cooperate with tapered lower edges of the blade to also urge the blade against the seat in its closed position.   A bypass  arrangement is provided  in  the  bonnet  around  the  stem  for communication with the valve passage to prevent the pulp  fibers  from  accumulating  in  the  bonnet  and jamming the stem.   A resilient seat is mounted to the valve body on the first side of the blade.
Patent CA-2093716-C (CA)
Title: Movable heat treat apparatus with sighting means
Inventor: SORENSEN THOMAS M
IPC: H05B3/00
Filed: 1993-04-08
Granted: 1999-08-17
Abstract: An apparatus for heat treating tree surface of a body is disclosed. The apparatus includes an infrared heat source carried on a stand. A circuit controls the energization of the lamp. The circuit includes a heat detector for detecting a targeted area temperature. The apparatus includes a sighting mechanism to permit an operator to accurately sight the heat detector against the surface to be heat treated.
Patent CA-2096611-C (CA)
Title: 4-benzylpiperidine derivatives and process for their production
Inventor: ORTIZ JOSE A
IPC: C07D401/06
Filed: 1993-05-19
Granted: 1998-05-19
Abstract: 4-Benzylpiperidine derivatives of the formula                        (I) or  a  pharmaceutically  acceptable  acid addition  salts thereof,  wherein  X is hydrogen or  fluorine and R  is hydrogen, or a group selected from p-fluorobenzoyl, alpha-hydroxy-p-fluorobenzyl,   p-fluorophenoxy, bis(p-fluoro-phenyl)methyl and 8-azaspiro [4,7] decane-7,9-dione-8-yl-methyl with  the  proviso  that  X  and  R  may  not  be simultaneously hydrogen and p-fluorobenzoyl respectively. Such compounds are useful as sigma-receptor ligands.
Patent CA-2099727-C (CA)
Title: Interfacial polymerization in a porous substrate and substrates functionalized with photochemical groups
Inventor: RILLING KEN
IPC: B01J31/06
Filed: 1993-06-29
Granted: 2004-08-24
Abstract: A method of preparing a porous article is provided, the method includes contacting a porous substrate with a first reactant that enters pores of the substrate; and contacting the porous substrate bearing the first reactant with a second reactant that is capable of reacting with the first reactant in an interfacial polymerization reaction; the amounts of first and second reactant being selected such that there occurs no, or substantially no, closing of pores of the substrate by the formed polymer. The invention also provides a porous article bearing a compound which is photochemically reactive and capable of undergoing a substantially non-reversible chemical transformation upon exposure to ultra-violet, visible or near infra-red irradiation. The photochemically reactive compound can be derivatized by irradiation and further reaction to provide a wide variety of useful membranes, for example, for microfiltration or for biochemical reactions and separations.
Patent CA-2101715-C (CA)
Inventor: MATSUMOTO TADAHIRO
IPC: B65B7/28
Filed: 1993-07-30
Granted: 1999-05-11
Abstract: ABSTRACT      A method for and an apparatus of sealing containers are disclosed.  Before causing thermal fusion of a thermoplastic resin sheet or film and a flange of a container, the flange and thermoplastic resin sheet or film and the flange are pre-heated  by  respective  container  and  sheet  material pre-heaters.
Patent CA-2105093-C (CA)
Inventor: LIDAR PER-OLA
IPC: D21F1/00
Filed: 1992-02-28
Granted: 2002-01-08
Abstract: Joints for industrial fabrics are made such that the end edge of each part of the fabric is formed with projecting loops (5), which are formed by bending the warp threads of each part backwards, the return parts of these threads being woven into the fa-bric for a given length. The loops of one part are inserted between the loops in the opposite part for being fixed in this position. It is desirable that all warp threads in the fabric can coact in the jjoint, even if their collective width is greater than 100 % of the fa-bric width. The individual loops (5) along at least some portion of the end edges (3, 4) of the parts (1, 2) are therefore formed from at least two juxtaposed threads (7, 8; 11, 12) crossing each other at least once (at 9) before the point of return into the fabric.
Patent CA-2108840-C (CA)
Title: Compositions and methods for temporarily coloring hair using chemically synthesized or biosynthetic water-soluble melanin
Inventor: WOLFRAM LESZEK J
IPC: A61K8/72
Filed: 1993-10-20
Granted: 2004-05-25
Abstract: Compositions comprising chemically synthesized or biosynthetic water-soluble melanin and at least one water dispersible cationic material which, when combined with the melanin, forms a composition that is suitable for use as a temporary haircolor. A process for temporarily coloring hair using those compositions.
Patent CA-2109368-C (CA)
Title: A process for the non-ramdom cleavage of starch and the low d. e. starchconversion products produced therby
Inventor: BRUMM PHILLIP J
IPC: A61K47/36
Filed: 1993-10-27
Granted: 2001-05-01
Abstract: Starch containing amylopectin is hydrolyzed with an alpha-amylase, preferably derived from Bacillus stearothermophilus, under conditions which cause a non-random cleavage of the starch molecules to yield fragments (molecules) having similar size and branching characteristics and a molecular weight range from about 20,000 to about 50,000 daltons are made. All of the desired molecules have (.alpha.1,6) linkages. The hydrolysate is treated to enrich the concentration of the desired fragments and the enriched portion can be processed further to make a maltodextrin having a D.E. of less than about 8.
Patent CA-2115384-C (CA)
Inventor: ANDERSON RICHARD L
IPC: C07B61/00
Filed: 1994-02-10
Granted: 1999-09-14
Abstract: Disclosed is an alkylation process which utilizes a mixture of sulfolane and hydrogen fluoride as an alkylation catalyst. The process provides for the removal of water from the alkylation catalyst that accumulates within the alkylation process system as a result of the incoming water which accompanies the catalyst mixture make-up components.