baber/WOPTO huggingface dataset:
Patent CA-2169884-A1 (CA)
Title: A material and method for inhibiting bacterial growth in an aqueous medium
Inventor: BATTS GREGORY NIGEL
IPC: A01N43/80
Filed: 1996-02-20
Abstract: A biocidal material comprises a biocide immobilised on a support characterised in that the biocide has a.log P value of at least 1.5, the support has a hydrophobic surface and the biocide is immobilised on the hydrophobic surface by a hydrophobic exclusion mechanism. The material can be used for inhibiting bacterial growth in an aqueous medium e.g. the wash water of a photoprocessing system. The material can be housed in a flow-through container.
Patent CA-2170797-A1 (CA)
Title: Vehicle tyre that can be elastically fitted with studs
Inventor: EROMAKI PENTTI
IPC: B29D30/66
Filed: 1996-03-01
Abstract: A vehicle tyre comprising a tyre carcass which has a cap consisting of at least one rubber layer which forms the tread. The cap has anti-skid stud holes extending inwardly from the tread face toward the carcass. At the bottom of the anti-skid stud holes, and thus under the bottom flange of the anti-skid studs, elastic cushions are provided, made of a material of an elasticity higher than that of the rubber layer forming the cap.
Patent CA-2171866-A1 (CA)
Title: Ventilation arrangement, including filter constructed as sound dampener, flow damper and for filtering purposes
Inventor: ANDERSSON PER OTTO
IPC: F24F8/108
Filed: 1994-09-08
Abstract: The invention relates to a ventilation plant comprising fans for distribution of intake air and exhaust air in branch ducts (9, 19) having openings (10, 20) for the intake air and exhaust air.  Tubular filters (11, 21) are sealingly attached to the openings and create a pressure drop of about 200 Pascal, which filters at flow velocities adjusted to about 2-5 m/sec. are acting also as throttling and sound damping devices of the plant.
Patent CA-2177758-A1 (CA)
Title: Offset zoom lens for reflective light modulators
Inventor: ANDERSON DOUG
IPC: G02B15/177
Filed: 1996-05-30
Abstract: A projection optical system. The system (10) contains two movable lens groups, a zoom lens group (20) and a compensator group (18). The compensator group (18) includes a movable aperture stop (21), thereby eliminating the need for a variable aperture stop. Both groups contain at least one aspheric lens element (22,32) for elimination of aberrations. The compensator group has a positive power, with the zoom group having a negative power, resulting in a reverse telephoto configuration.
Patent CA-2182218-A1 (CA)
Title: Rapid read-out biological indicator
Inventor: TAUTVYDAS KESTUTIS J
IPC: C12Q1/22
Filed: 1995-02-15
Abstract: The present specification describes a method of determining effectiveness of a sterilization process which includes the steps of i) contacting a sample to be sterilized and a biological indicator comprising microbial spores with a sterilant to give exposed spores, ii) contacting the exposed spores with a medium selected to germinate the spores, iii) determining a rate of germination of the exposed spones to determine the effectiveness of the sterilization process. The germination rate of the exposed spores may be readily determined using spectrophotometric techniques with or without staining of germinated spores. The present method is applicable for different types of known sterilants including but not limited to steam, ethylene oxide, radiation, heat, sodium hypochlorite, polyvinylpyrrolidone-iodine, sodium dichlorocyanurate, low temperature steam-formaldehyde, glutaraldehyde and hydrogen peroxide, hydrogen peroxide plasma or mixtures thereof. The specification also describes a biological indicator system which uses the present method.
Patent CA-2184484-A1 (CA)
Title: Catheter guidewire with radiopaque markers
Inventor: TESTA REBECCA C
IPC: A61M25/098
Filed: 1995-03-09
Abstract: A guidewire for use with a catheter has varying radiopacity as well as at least one radiopaque marker in its distal end. In one embodiment, the guidewire includes a shaft having a distal radiopaque coil supported by and attached to a distal portion of the shaft and a proximal radiopaque coil supported by and attached to an intermediate portion of the shaft. The proximal and distal coils are spaced apart from one another. The distal coil may be more radiopaque than or equally radiopaque to the proximal coil such that when viewed under fluoroscopy, the highly radiopaque coil will define a dark image whereas the more proximal radiopaque coil will define a moderately radiopaque image or both will define a dark image. The area between the two coils will appear white. Between the coils, at least one radiopaque marker band is attached to the shaft. The marker bands provide several reference lengths for a physician. A polymer sleeve encases the marker bands and the shaft between the first and second coils providing a uniform outer diameter to the distal region of the guidewire. In another embodiment, the proximal coil of the first embodiment is absent and the polymer sleeve extends proximally of the radiopaque marker bands. In a further embodiment, a radiopaque coil having varying pitch along its length is supported by and attached to a distal region of the core wire.
Patent CA-2186767-A1 (CA)
Inventor: KOMMER MARCELLE VAN DEN
IPC: C11B3/00
Filed: 1995-03-20
Abstract: Dry fractionation of triglyceride oil using as an additive a crystallisation modifying substance comprising a monoglyceride or diglyceride of fatty acids, optionally esterified with citric acid.
Patent CA-2188135-A1 (CA)
Title: Biological material pre-fixation treatment
Inventor: JAFFE NORMAN
IPC: A61L27/36
Filed: 1995-03-21
Abstract: Disclosed is a controlled au-tolysis method for making biological tissue substantially acellular by ex-posing the biological material, prior to any fixation thereof, to at least one buffered solution having a pH in the range from about 5.0 to 8.0 and a temperature in the range from about 12 °C to 30 °C for a suff-cent period of time to render at least one region of the biological mate-rial substantially acellular while sub-stantially preserving the structural integrity and non-cellular structural components of the biological mate-rial. Also disclosed is a method of making a bioprosthetic heart valve using biological material that has been treated by controlled autolysis and a method of treating a mammal having a defective heart valve using a bioprosthetic heart valve made, in part, by controlled autolysis.
Patent CA-2190733-A1 (CA)
Title: Yarn coating assembly and method
Inventor: OLIPHANT LARRY J
IPC: A61C15/04
Filed: 1995-05-23
Abstract: An apparatus and method for applying coatings to yarns (13), particularly yarns (13) to be utilized as dental floss in a preferred arrangement, an array of parallel spaced yarns (13) are continuously fed while being intermittently deflected by a cam or deflector (15). As tile yarns (13) are deflected they enter a grooved liquid applicator (12), with the grooves (12) maintaining a predetermined amount of liquid therein by capillary action. A predetermined amount of liquid is thus applied at intermittent or spaced locations along the length of the yarn (13). The method and apparatus is particularly suitable for providing dye at spaced locations along a continuous length of floss, thereby demarcating lengths suitable for individual use. Various aspects are also applicable to a variety of yarn coating and or dyeing applications.
Patent CA-2192454-A1 (CA)
Title: Use of genetically detoxified pertussis toxin as an adjuvant
Inventor: GAJEWCZYK DIANE M
IPC: A61K39/10
Filed: 1995-06-08
Abstract: A modulated immune response to an antigen is achieved by coadministering the antigen and a genetically-detoxified pertussis holotoxin, particularly one retaining its immunogenicity, to a host. The modulated immune response enables immunogenic compositions, including multivalent pediatric vaccines such as DTP, to be provided which produce a modulated immune response in the absence of extrinsic adjuvants such as alum. The adjuvanting effect achieved by the genetically-detoxified pertussis holotoxin enables at least the same level of adjuvanting effect to be achieved as previously attained by alum, without the undesirable side effects thereof.
Patent CA-2195359-A1 (CA)
Title: Vision system and proximity detector
Inventor: CHAPMAN GLENN H
IPC: G01S17/04
Filed: 1997-01-17
Abstract: A vision system and proximity detector is provided in the form of an occluding mask with multiple high aspect light pathways positioned over a light detecting surface.          Pixel-based images can be generated to provide a vision system utilizing a variety of illumination modes.  Proximity can be measured with a triangulating beam.
Patent CA-2195484-A1 (CA)
Inventor: VIERA FERNANDO M
IPC: A61M25/01
Filed: 1997-01-20
Abstract: A catheter guidewire has a relatively flexible distal portion to facilitate the steering of the guidewire through the cardiovascular system of a subject and the capability of the guidewire to reach a deposit region within a relatively tortuous portion of the cardiovascular system. The guidewire also has a relatively stiff proximal portion to facilitate the pushing of the guidewire through the cardiovascular system from an entry point of the subject. For one embodiment, the guidewire includes a corewire and a sleeve secured to the corewire such that the sleeve surrounds a proximal portion of the corewire. The sleeve is formed from a material having a relatively greater stiffness than the material for the corewire. The sleeve may be formed from stainless steel, for example, to provide for a relatively stiff proximal portion of a corewire formed from a material exhibiting superelastic properties, such as a nickel-titanium or Nitinol alloy for example.
Patent CA-2196254-A1 (CA)
Title: Method and reagent kit for determining paper degradation in transformers
Inventor: BIRD FREDERICK JOHN
IPC: G01R31/12
Filed: 1997-01-29
Abstract: This invention relates to power transformers.      More particularly, this invention pertains to a method and apparatus for detecting the degree of degradation of paper insulation in a transformer by determining the concentra-tion of furaldehyde in the transformer oil. A reagent for detecting the presence of furaldehyde in transformer oil comprising: (a) a primary amine selected from the group consisting of aniline, toluidine, anisidine and aminophenol or an amine; (b) a second component comprising approxi-mately 15 to 33 (weight to volume) percent of acetic acid alone, or in combination with citric acid; from approxi-mately 67 to 85 (volume) percent of a halogenated hydrocar-bon selected from the group consisting of dichloromethane, chloroform, carbontetrachloride, dichloroethane, trichloroethane, tetrachloroethane, trichloroethylene and tetrachloroethylene; approximately 4 (weight to volume) percent of salicylic acid; and approximately 1 (weight to volume) percent of an anti-oxidant; and (c) a third compo-nent comprising approximately 25 (weight to volume) percent citric acid in distilled water.
Patent CA-2197362-A1 (CA)
Title: Flat sleeve convertible to a decorative container
Inventor: FANTZ PAUL
IPC: B65D75/00
Filed: 1997-02-12
Abstract: A sleeve used to wrap items such as potted plants or comestibles.  The sleeve has a closed bottom and an expansion element for allowing expansion of the sleeve upon the depositing of the pot or items into the sleeve.  The expansion element may be a gusset,  pleats,  random folds or elastic material for enabling the lower portion of the sleeve to conform to the outer and bottom surfaces of the pot to provide a decorative cover about the pot.  The sleeve optionally has a detachable upper portion.
Patent CA-2197921-A1 (CA)
Inventor: SPINNEY GREGORY L
IPC: E06B1/60
Filed: 1997-02-19
Abstract: This invention relates to building construction and is directed to the placing of wooden door jambs. During the construction of housing units, office buildings, and apartment buildings oftentimes wooden door jambs are used to install interior doors. Nowadays, the popular method consists of using wooden shingles or shims and finish nails through the face of the door jamb to make the door jamb plumb or level in the rough stud opening. This invention totally eliminates the use of wooden shingles or shims and nails through the face of the door jamb. This invention will always keep the wooden door jamb even or straight so that they do not twist during installation, will make it easier for the carpenter to detach the wooden door jamb and it will also make the job neater and more efficient.
Patent CA-2200856-A1 (CA)
Title: High active granular detergent compositions and process for making them
Inventor: LUNSMANN WALTER JOSEPH
IPC: C11D17/06
Filed: 1995-09-21
Abstract: Process for making a detergent composition having at least 40 % by weight of surfactant and a bulk density of at least 650 g/l, the process comprising the single step of high shear mixing until granular at a temperature from ambient to 60 °C, a binder component comprising said surfactant and less than 20 % water, with a particulate solid component, of initial particle size from 0.1 to about 500 microns, said particulate solid component having at least about 15 % by weight of particles with a particle size of at least about 50 microns and a sufficient amount of smaller particles so that the average surface area of the particulate component is at least about 9 m2/g as measured by the BET method, and wherein the binder maintains the mixture in a particulate state throughout the process.
Patent CA-2202137-A1 (CA)
Title: Composition, device and method for enhanced electrotransport agent delivery
Inventor: YIEH JANE
IPC: A61K47/10
Filed: 1995-11-01
Abstract: An electrotransport composition comprises at least one C2-C4 lower alcohol, unsaturated derivatives thereof, or mixtures thereof, and at least one C8-C14 higher alcohol, unsaturated derivatives thereof, or mixtures thereof. An electrotransport device and a method of increasing transdermal electrotransport flux utilize the composition of the invention for delivering pharmaceutically-acceptable agents across a body surface such as skin.
Patent CA-2206676-A1 (CA)
Inventor: WATSON ROBERT GERARD
IPC: E04G21/32
Filed: 1997-07-15
Abstract: A safety railing for temporary installation on flat roofs or the like has stanchions extending each above and below the level of the roof. The structure is devoid of any invasive fastener arrangement invasive to the roof or the wall of the building structure. The only securement of the railing elements to the building structure is through the top portion of the parapet of the roof of the building.
Patent CA-2215809-A1 (CA)
Title: A plug screw-feeder
Inventor: KJELLQVIST OLOF
IPC: B65G33/32
Filed: 1997-09-18
Abstract: A plug screw-feeder includes a conical feed screw (10) whose one end is rotatably mounted in a conical screw tube (11) and whose other end is provided with a drive shaft (14). The drive shaft (14) is axially and radially mounted in a bearing arrangement (16, 17). The bearing arrangement comprises two pairs of rolling bearings (16, 17) which are tightened between a fixed ring (21) on the drive shaft (14) and an axially adjustable sleeve (20) on the drive shaft (14). The sleeve (20) is positioned between one of the rolling bearings (16, 17) and a nut (22) in screw-thread engagement with the shaft (14).
Patent CA-2217433-A1 (CA)
Inventor: LE FOLL MARCEL
IPC: F16L37/084
Filed: 1997-09-26
Abstract: Dans ce dispositif, l'élément supérieur (A) comporte, en vis à vis de l'élément inférieur B, en allant vers l'extérieur et à partir d'une partie cylindrique, une nervure tronconique (11) divergeant vers le haut et une rainure circulaire (4) entourant ladite nervure, ladite rainure (4) ayant une section transversale dégageante et une jupe externe (10) déformable élastiquement, tandis que l'élément inférieur (B) comporte, en vis à vis de l'élément supérieur, en allant vers l'extérieur et à partir d'une partie cylindrique (3, 16b), d'une part, une cuvette tronconique (6), allant en s'évasant vers le haut et apte à recevoir la nervure (11) de l'élément supérieur, d'autre part, une jupe externe tronconique (7) divergeant vers le bas, et formant avec la paroi de la cuvette (6), une nervure circulaire (5), apte à pénétrer dans la rainure (4) de l'élément supérieur (A) et à venir élastiquement en contact contre la face interne de cette rainure, et de plus, des moyens de retenue (12) ménagés sur le bord inférieur de la jupe externe (10) et aptes à s'encliqueter sous le bord de la jupe externe (7) de l'élément inférieur (B).
Patent CA-2217558-A1 (CA)
Title: Apparatus for baling loose materials and associated method of fabrication
Inventor: ROBINSON LONNIE R
IPC: B30B15/04
Filed: 1996-03-28
Abstract: An apparatus for baling loose materials, such as waste materials, includes a housing defining a charging passage and a compaction chamber. The baling apparatus also includes a compacting ram platen which moves through the charging passage so as to compact the loose materials collected within the charging passage into a bale in the compaction chamber. In one embodiment, the baling apparatus includes a reinforcing frame disposed generally circumferentially about at least a portion of the housing to provide structural reinforcement to the housing during the compaction of a bale. The reinforcing frame defines an aperture through which the floor panel and the first and second opposed side panels of the housing are typically extended during the fabrication of the baling apparatus so as to be supported in a predetermined positional relationship. In another embodiment, the baling apparatus includes a knife assembly including a frame member, such as the reinforcing frame, mounted to the housing and a second cutting edge mounted to the frame member and adapted for controlled movement relative thereto. A first cutting edge can be mounted to the frame member and adapted for controlled movement relative thereto. A first cutting edge can be mounted to upper edge portions of the compacting ram platen so as to cooperate with the second cutting edge to severe loose materials which extend beyond the charging passage. By controllably positioning the second cutting edge relative to the frame member, the spacing between the first and second cutting edges can be optimized for efficient operation. In addition, the knife assembly can include a lateral guide for controlling the lateral position of the second cutting edge such that the first and second cutting edges are aligned.
Patent CA-2220067-A1 (CA)
Title: Tubular actuator component for use in a drill-string
Inventor: LEE PAUL BERNARD
IPC: E21B23/04
Filed: 1996-05-01
Abstract: A tubular actuator component (20) for use in a drill-string is disclosed and which comprises a main tubular outer body (6) within which a clutch mechanism, mandrel (2), and pad mandrel (7) are located. The clutch mechanism comprises a lower stationary clutch component (4), secured upper clutch component (12) and an intermediate clutch component (1) such that application of fluid actuating pressure to the interior of the tubular component axially displaces intermediate clutch member (1) between positions of co-operative engagement with one or the other of the lower stationary clutch component (4) and the secured upper clutch component (12).
Patent CA-2223288-A1 (CA)
Title: Intermittent gas-insufflation apparatus and method therefor
Inventor: WADA ROBERT TOSHIAKI
IPC: A61M16/00
Filed: 1996-06-07
Abstract: An intermittent gas-insufflation apparatus insufflates a quantity of gaseous fluid into a patient during exhalation intervals of the breathing cycle. A  valve assembly actuates between a closed state and an open state to prevent or allow gaseous fluid flow from a source of gaseous fluid to the patient. A sensor detects changes in breathing pressure and generates sensor signals characteristic of the changes in the breathing pressure. A controller receives and processes the sensor signals during either the inhalation or exhalation interval or both and is responsive within the exhalation interval to the sensor signals to actuate the valve assembly into the opened state so that the gaseous fluid flows from the source of gaseous fluid to the entrance into the respiratory system of the patient during the exhalation interval. Methods are also described for embodiments of the invention and for maintenance of blood-oxygen concentration for a patient receiving oxygen.
Patent CA-2223570-A1 (CA)
Title: Formic acid and formaldehyde destruction in waste streams
Inventor: SMITH LOWELL R
IPC: C07F9/38
Filed: 1996-06-03
Abstract: A process is provided for destroying formic acid and/or formaldehyde in an aqueous, organic acid waste stream by contacting the stream with a supported precious metal catalyst and passing air or molecular oxygen gas through the solution to promote chemical oxidation. The invention is a safe, practical and cost effective alternative to bio-system treatment of these compounds using microorganisms. The process of the invention may be practiced in either a batch or continuous mode and, in accordance with the invention, formic acid present in a stream at a level of 3800 ppm and formaldehyde present in an amount of 5800 ppm can be reduced respectively to levels of 200 ppm or less.
Patent CA-2224464-A1 (CA)
Title: Methode et systeme de communication entre des points le long d'un ecoulement fluide
Inventor: STURM JOHN A
IPC: E21B47/12
Filed: 1997-12-11
Abstract: Une méthode de communication des données entre des points le long d'un écoulement fluide comprend les étapes suivantes : prévoir une série d'unités de mémorisation des données inscriptibles et lisibles à distance capables de s'écouler dans l'écoulement fluide; inscrire à distance des données sur les unités de mémorisation lorsque ces dernières passent à un premier point dans l'écoulement; et lire à distance les données des unités de mémorisation lorsque ces dernières passent à un second point dans l'écoulement, situé en aval du premier point.  Le système de l'invention comporte : une série d'unités de mémorisation des données inscriptibles et lisibles à distance capables de s'écouler dans l'écoulement fluide; un scripteur au premier point pour inscrire à distance des données sur les supports d'information lorsque ces derniers passent au premier point de l'écoulement; et un lecteur de données au second point pour lire à distance les données des supports d'information lorsque ces derniers passent au second point dans l'écoulement.
Patent CA-2224713-A1 (CA)
Inventor: MUGUET MICHEL
IPC: D21C9/10
Filed: 1997-04-11
Abstract: The invention features a method for oxygen delignification of paper pulp. This method comprises an activation pretreatment step using an organic peroxyacid such as paracetic acid before the oxygen delignification step or between two oxygen delignification stages. A level of delignification of about 70 to 75 % is obtained compared with about 50 % using the method of oxygen delignification with the usual pretreatment steps.
Patent CA-2224947-A1 (CA)
Inventor: NEUBECKER KARIN
IPC: C08F2/06
Filed: 1998-01-23
Abstract: The invention provides a process for preparing polymers of N-vinylcaprolactam by polymerizing A)  40 - 100 % by weight of N-vinylcaprolactam and B)  0 - 60 % by weight of a further monoethylenically unsaturated monomer which is copolymerizable with N-vinylcaprolactam and also polymers prepared by this process.
Patent CA-2225692-A1 (CA)
Title: Hi-density sintered alloy and spheroidization method for pre-alloyed powders
Inventor: THIEN DUC THIEU DANNY
IPC: C22C33/02
Filed: 1995-06-29
Abstract: This invention relates to a process of forming a sintered article of powder metal comprising blending graphite and lubricant with a pre-alloyed iron based powder, pressing said blended mixture to shape in a single compaction stage, sintering said article, and then high temperature sintering said article in a reducing atmosphere to produce a sintered article having a density greater than 7.4 g/cc.