baber/WOPTO huggingface dataset:
Patent CA-2265639-A1 (CA)
Title: Convertible lift mechanism
Inventor: STORM GEORGE L
IPC: B66B9/08
Filed: 1998-07-14
Abstract: A convertible lift mechanism (10) for lifting an object from a first surface (12) to a vertically displaced second surface (14) includes a source of motive force (11), a conversion stair (16a-16f), and a lift linkage (13). The convertible lift mechanism (10) may be utilized as a platform lift (74) or a wheelchair lift. The conversion stair (16a-16f) has a first configuration and a second configuration. In the first configuration, the conversion stair has a substantially horizontal lifting surface (44) movable between a first position and a second position. The substantially horizontal lifting surface (44) forms at least a portion of a lift platform (74).
Patent CA-2268968-A1 (CA)
Title: Iminochlorin aspartic acid derivatives
Inventor: NAKAJIMA SUSUMU
IPC: C07D487/22
Filed: 1997-09-30
Abstract: The present invention provides an iminochlorin aspartic acid derivative represented by the following formula (I): (see formula I) Wherein Asp represents an aspartic acid residue, or a pharmaceutically acceptable salt thereof. The compound of the present invention is useful as a photosensitizer for photophysico-chemical diagnosis and therapy of cancer, because it has a high accumulability to cancerous cells, reactivity to external energy and a cancerous cell destroying effect which is effective even againt cancers developing in deep site, while it is rapidly excreted from normal cells and therefore causes no damage thereto.
Patent CA-2269967-A1 (CA)
Title: Utilities container
Inventor: STASCHIK UDO INGMAR
IPC: F24D18/00
Filed: 1999-04-23
Abstract: For houses and other buildings in remote locations, which are not serviced with mains (municipal) utilities, a module includes the electric generator, water supply, sewage disposal, etc facilities. The module and its utilities are constructed, assembled, and installed into a room-structure, in a factory, whereby the whole module can be tested prior to shipping. The physical and structural integration of the components and systems permits and enhances functional and operational integration of the systems. The module uses co-generation, heat exchangers, etc, for coordinating the hitherto-separate utility systems.
Patent CA-2270468-A1 (CA)
Title: Method for production of feed for salmonides and feed for salmonides
Inventor: JOHNSEN FREDDY
IPC: A23K1/16
Filed: 1997-10-22
Abstract: The invention relates to a method for production of fish feed comprising fish products and standard feed components and fish feed products. Ammonium-, sodium- or potassium diformates, comprising formic acid or mixtures thereof are included in the fish products prior to their further processing and mixing with the other feed components. The final fish feed contains preferably 0.3-2.5 weight % formates based on the total feed.
Patent CA-2272225-A1 (CA)
Title: Method for treating an organic liquid contaminated with an iodide compound
Inventor: KULPRATHIPANJA SANTI
IPC: B01J20/18
Filed: 1999-05-18
Abstract: A solution is provided to the long sought inorganic alternative to resin based adsorbents for iodide clean-up service for corrosive organic liquid. The solution involves the use of a solid inorganic adsorbent comprising a combination of a silica-rich zeolite molecular sieve, which has been cation-exchanged with an iodide-reactive metal selected from silver, mercury, copper, lead, thallium, palladium or mixtures thereof, with a substantially insoluble, porous refractory inorganic oxide binder. Reactivation and regeneration technique for the spent inorganic adsorbent are also covered.
Patent CA-2272870-A1 (CA)
Title: Procede de mesure de la resistance electrique cutanee d'un patient soumis a une administration transdermique de medicament
Inventor: MILLOT PHILIPPE
IPC: A61N1/30
Filed: 1997-11-18
Abstract: Suivant l'invention, on règle temporairement l'intensité (I) d'un courant ionophorétique d'assistance de l'administration, à une valeur prédéterminée (I¿m?) correspondant à un point d'une partie d'origine rectiligne (OA) de la caractéristique courant/tension de la peau du patient, on mesure la tension (V¿peau?) régnant alors entre deux électrodes d'application du courant ionophorétique à la peau du patient et on tire la mesure (R¿cut?) de la résistance cutanée, de la tension (V¿peau?) mesurée et de la valeur prédéterminée (I¿m?) du courant ionophorétique.
Patent CA-2274505-A1 (CA)
Title: Distributed strain and temperature sensing system
Inventor: PARKER TOM RICHARD
IPC: G01D5/353
Filed: 1997-12-16
Abstract: A method and apparatus for measuring the temperature and strain within a structure consists in having optical fibres incorporated in the structure, passing pulses of light down the fibre and detecting the backscattered light. The backscattered light has a changed wavelength i compared with the incident light depending on the strain at the point from where it is backscattered, (the Brillouin shift) and by having a scan rate of an optical scanning filter slower than the repetition rate of the optical pulses and by accurately measuring both the amplitude and frequency of the Brillouin scattered light as a function of time and comparing it with a reference optical fibre it is possible to measure the temperature and strain at positions along the optic fibre. The invention can be used to measure temperature rises and strains induced distributed through a structure.
Patent CA-2276015-A1 (CA)
Title: Bioactive surface layer for bone implants
Inventor: PIVETEAU LAURENT-DOMINIQUE
IPC: A61F2/00
Filed: 1996-12-23
Abstract: A bioactive surface layer with 0.01 µm to 5 mm thickness is suitable for a metallic bone implant. The surface layer has the following composition: (A) calcium compounds (CaX) consisting of crystalline calcium phosphate (CaP), calcium apatites (CaAp) and/or calcium carbonate (CaCO3), in a proportion expressed by the following equation: 100 % (CaX) = .SIGMA.[x % (CaP) + y %  (CaAp) + z % (CaCO3)], in which x + y + z = 100, 0x100; 0y100; 0z100, and in the form of particles of 20 nm to 4 mm; and (b) amorphous or crystalline metal oxide (MeO). The ratio between CaX and MeO in the surface layer can be preferably varied as a result of the specific coating process. The thickness of the surface layer lies between 0.01 µm and 5 mm and the CaX particles are 20 nm to 4 mm large.
Patent CA-2276220-A1 (CA)
Inventor: BUEHRMANN RUDOLPH
IPC: E21B7/02
Filed: 1999-06-23
Abstract: A drill rig is provided in which a drill boom is supported on the upper of two frames whilst the lower of the two frames supports the rig. The two frames are interconnected by pivoted elongate support members in such a way that the inclination of the upper frame relative to the lower frame varies as the upper frame is raised and lowered. The variation in inclination is such that holes to be drilled automatically assume the required inclination relative to the grade of the development.
Patent CA-2277195-A1 (CA)
Title: Reversible variable speed transmission and transaxle having pressure compensating flow metering device
Inventor: MILLER JOSEPH V
IPC: F16H3/72
Filed: 1999-07-07
Abstract: A variable speed transmission including a rotatable input member connectable to a drive source, a pump for pumping fluid through a conduit, a gear train including an epicyclic gear train operatively coupled to the input member and the pump, and a rotatable output member selectively operatively connected to either a forward or a reverse drive gear, wherein the output member has a forward drive ratio corresponding with its connection to the forward drive gear and a different, reverse drive ratio corresponding with its connection to the reverse drive gear. The transmission may also include a pressure compensating flow metering device for regulating the pressure of fluid flowing through said conduit.
Patent CA-2278905-A1 (CA)
Inventor: STACHEW CARL F
IPC: C10M141/10
Filed: 1999-07-26
Abstract: 1. A composition for reducing the copper-lead bearing corrosion of a formulation that includes a major amount of an oil of lubrication viscosity and a minor amount of a corrosion-reducing additive comprising (A) a borated dispersant with a total base number of from 20 to 160 on an oil-free basis; (B) a metal salt of a phosphorus acid; and (C) a metal overbased composition comprising at least one carboxylate, phenate, or sulfonate wherein the metal is lithium, sodium, potassium, magnesium or calcium, and wherein the improvement comprises (D) a borate ester.    The borated ester and borated dispersant provide from 20 to about 800 parts per million (ppm) mass of boron in the composition.
Patent CA-2279281-A1 (CA)
Title: Phase transition flat panel display
Inventor: SHOKHOR SERGEY
IPC: G02F1/21
Filed: 1998-01-26
Abstract: A display device includes a plurality of pixels arranged in a predetermined configuration. Each pixel includes a mirror element (14) disposed over a flat surface. A light modulating material (12) disposed over the mirror element for selectively modulating a predetermined wavelength of light received from an external source by transitioning between a first and a second state causes destructive interference in the predetermined wavelength of light and in the second state causes constructive interference in the predetermined wavelength of light.
Patent CA-2279922-A1 (CA)
Inventor: MONTGOMERY JAMES R
IPC: B27L11/02
Filed: 1999-08-09
Abstract: A chip slicer has pivotably mounted chip-forming knives located so that the knife edges are in a plane which passes through the axis of rotation of the knives, as well as through the axis of pivoting. Another improvement is to employ a knife which has a blade which is bent at an obtuse angle to form a first and a second leg. The first leg has a cutting edge and an upper surface which defines a chip path. The second leg is bent with respect to the first leg in the direction of rotation of the knife ring. The knives are mounted to the ring by clamping wedges which are bolted to the knife ring so that they overlie the second leg and so clamp the knife blade by the second leg to thereby substantially remove obstructions from the chip path. A further improvement has chip depth gauges which are positioned in front of the knife edges. The depth gauges have trailing edges in the direction of rotation which extend substantially parallel to the upper surface of the blades. Yet another improvement employs chip knives which are mounted beneath spring loaded knife clamps which can be loosened by partially unbolting, so the blades may be driven laterally through holes in the sides of the knife rings by replacement blades.
Patent CA-2281213-A1 (CA)
Title: Method for invisibly tagging petroleum products using visible dyes
Inventor: STEUER SUSAN I
IPC: C10L1/223
Filed: 1999-09-01
Abstract: This invention provides a method for invisibly tagging, for subsequent identification purposes, various liquid petroleum hydrocarbons, such as crude oil, diesel fuel, heating oil, kerosene, lubricating oils, waxes, jet fuel, and in particular gasoline, remarkably using visible dyes by incorporating therein one or more visible dyes at minute levels such that they cannot be visually detected by the human eye. Visible dyes which have high solubility in petroleum hydrocarbons and maximum absorption in the 550-700 nm visible wavelength range are used to impart such invisible markings. The visible dyes, although employed at non-visible levels, are still capable of detection in a relatively quick and simple manner which requires minimal instrumentation, creates no waste products for disposal, and gives true quantitative results of dye concentrations in the field. This invention, therefore, further provides a method for so identifying the tagged petroleum hydrocarbons by exposing the tagged hydrocarbon to visible light having wavelengths in the portion of the spectrum utilized and detecting and quantifying the presence of the dyes in the tagged product from their characteristic absorption with available absorption detection equipment sensitive in this spectral region. This invention also provides visible dye compositions particularly appropriate for said invisible tagging.
Patent CA-2281645-A1 (CA)
Title: System and method for semiotically processing text
Inventor: VOGEL CLAUDE
IPC: G06F17/30
Filed: 1998-02-18
Abstract: A content-based system and method for text processing an retrieval is provided wherein a plurality of pieces of text are processed based on content to generate an index for each piece of text, the index comprising a list of phrases that represent the content of the piece of text. The phrases are grouped together to generate clusters based on a degree of relationship of the phrases, and a hierarchical structure is generated, the hierarchical structure comprising a plurality of maps, each map corresponding to a predetermined degree of relationship, the map graphically depicting the clusters at the predetermined degree of relationship, and comprising a plurality of nodes, each node representing a cluster, and a plurality of links connecting nodes that are related. The map is displayed to a user, a user selects a particular cluster on the map, and a portion of text is extracted from said pieces of text based on the cluster selected by the user. The system may also generate scenarios, based on said maps, that indicate changes in the relationships shown by the maps.
Patent CA-2281922-A1 (CA)
Title: Melamine melam melem double salt of a polyphosphoric acid and process for its production
Inventor: SUZUKI KEITARO
IPC: C09K21/12
Filed: 1998-02-26
Abstract: A melamine.cndot.melam.cndot.melem double salt of a polyphosphoric acid, which has a solubility of from 0.01 to 0.10 g/100 ml in water (25°C), a pH of from 4.0 to 7.0 as a 10 wt% aqueous slurry (25°C), and a melamine content of from 0.05 to 1.00 mol, a melam content of from 0.30 to 0.60 mol and a melem content of from 0.05 to 0.80 mol, per mol of the phosphorous atom; and A process for producing the above mentioned melamine.cndot. melam.cndot.melem double salt of a polyphosphoric acid, which comprises the following steps (a) and (b): (a) a step of obtaining a reaction product by mixing melamine and phosphoric acid at a temperature of from 0 to 330°C in such a ratio that the melamine is from 2.0 to 4.0 mols per mol of the phosphoric acid (as calculated as orthophosphoric acid content), and (b) a step of baking the reaction product obtained in step (a) at a temperature of from 340 to 450°C for from 0.1 to 30 hours.
Patent CA-2282945-A1 (CA)
Inventor: SMITH DAVID GEORGE
IPC: E21B21/07
Filed: 1999-09-15
Abstract: A method and apparatus for reducing a linear velocity of entrained particles in an air drilling return air stream. The method involves the step of directing the return air stream containing entrained particles at a cushion formed by a counter current of air. It is preferred that the linear velocity of the return air stream be lowered after impact with the counter current of air. It is also preferred that the counter current of air is created by redirecting a portion of the return air stream. The apparatus for accomplishing this results includes a hollow body having an interior target surface with a plurality of perpendicular baffles forming pockets for redirecting the return air stream. An outlet is provided which is of larger cross-section dimension than an inlet, thereby reducing the linear velocity of the return air stream after impact.
Patent CA-2284509-A1 (CA)
Inventor: MATSUDA MORIKATSU
IPC: B21D28/36
Filed: 1991-06-04
Abstract: In order to change punches and dies on upper and lower turrets during punching operation on a workpiece, a turret punch press includes a plurality of rotatable holder frames each supporting the upper and lower turret. Thus, when a first set of upper and lower turrets supported on a first holder frames is located in a working region under a striker for a punching operation, a second set of upper and lower turrets supported on a second holder frame is located in a position outside the working region, whereby a punch and die supported on the second set of the turrets can be changed for another punch and die during punching operation. In the preferable embodiment, the holder frame is removably supported on a main frame of the turret punch press, whereby the holder frame can be changed for another holder frame during punching operation.
Patent CA-2285170-A1 (CA)
Inventor: NAKASHIMA YOSHIMITU
IPC: B24B39/04
Filed: 1999-10-07
Abstract: An object of the present invention is to provide a method for manufacturing a mirror surface tube for a photosensitive drum of a copying machine or the like, by which an external surface of an aluminium or aluminium alloy tube can be mirror-processed in a high accuracy without surface defects, and in such a way that good quality required for a photosensitive drum is ensured and dimension accuracy such as roundness and yield in production is improved.      In a first step, an aluminium or aluminium alloy tube finished in a predetermined shape and dimension with surface roughness of 10 microns or less is processed by centerless grinding process. In a second step, grinding process is performed using an electrolytic integrated polishing apparatus including a tool electrode mechanism having an elastic grindstone so as to make a mirror surface tube having t:he surface roughness of 2.0 microns or less. Further, preferably, in a third stage, roller burnishing process is performed to finish the surface roughness of 0.5 microns or less.
Patent CA-2285860-A1 (CA)
Title: Process and iron-based catalyst composition for the production of syndiotactic 1,2-polybutadiene
Inventor: LUO STEVEN
IPC: C08F136/06
Filed: 1999-10-13
Abstract: A catalyst composition comprising (a) an iron-containing compound, (b) a dihydrocarbyl hydrogen phosphite, and (c) an organoaluminum compound is disclosed for polymerizing 1,3-butadiene into syndiotactic 1,2-polybutadiene. The use of the catalyst composition of this disclosure avoids the use of environmentally detrimental components such as carbon disulfide and halogenated solvents. The melting temperature of the syndiotactic 1,2-polybutadiene can be varied from about 100 to about 200 °C by variations in the catalyst components and the component ratios. The ability to vary the melting temperature over such a broad range with a single catalyst composition is very desirable. The syndiotactic 1,2-polybutadiene can be used as a plastic or as an additive for rubber compositions wherein it can crosslink with conventional rubbers using conventional crosslinking agents.
Patent CA-2286542-A1 (CA)
Inventor: KIM KWANG
IPC: H03F1/32
Filed: 1999-10-18
Abstract: A method and apparatus reduce the out-of-band frequency components of an RF amplified signal, preferably a CDMA signal, which has a carrier frequency which is not known in advance. The apparatus and method feature locating the frequency of the incoming signal by examining an RF output signal having both in-band frequency components and out-of-band frequency components. Typically the output signal is generated using a high-power, Class A/B amplifier. Once the frequency of the carrier has been determined, the out-of-band components are used to generate control signals which, in, for example, a feedback or feedforward circuitry, reduce the energy of the out-of-band signals and thereby provide a more linear amplifier transfer function.
Patent CA-2287475-A1 (CA)
Inventor: O'LEARY JAMES
IPC: A62C4/04
Filed: 1999-10-28
Abstract: The present invention relates to a waste fire suppression control devic e which is attached to the base of a conventional garbage chute system. The device comprises and incorporates a sequence of two control doors. One door is a main control door which is pivotally mounted at the base of the device and which is biased towards a closed position. The main control door opens only when the weight or force of garbage on the top surface of the door is greate r than a pre-determined release force. The other door is a closing plate which is held open during normal operation of the device and closes either automatically i n response to elevated temperature or manually. The two control doors together and separately form a barrier to prevent smoke and fire from entering the chute system and to contain smoke and fire within the dumpster area. As well, an integrated conventional sprinkler system floods the device and dumpster belo w with water.
Patent CA-2289339-A1 (CA)
Inventor: THUDIUM KARL
IPC: B21D43/05
Filed: 1999-11-09
Abstract: A transfer system, particularly for the transfer of workpieces in multi-station presses (1), consists of several transfer modules (14 to 19), which each have a workpiece holding device (28) which is carried by at least one lever mechanism (23). Each lever mechanism transmits the adjusting movement of two mutually independent drives (39, 44) to the workpiece holding device (28). One of the drives (39, 44) is disposed in a stationary manner, and the other is moved by the drive disposed in a stationary manner. This basic principle opens up many design possibilities.
Patent CA-2291771-A1 (CA)
Inventor: KOCH THEODORE A
IPC: B01J19/08
Filed: 1998-07-02
Abstract: An improved method of igniting a catalyzed gas phase chemical reaction involving the act of providing a reactor vessel (10), wherein the gaseous reactant, continuously passing through the reactor, makes contact with a solid phase metallic catalyst media (18), with an inductive coil (14) within the reactor (10) on the inlet side of the catalyst and a porous thermal, spark and radiation barrier (17) between the induction coil (14) and solid catalyst (18). According to the improved method of ignition, the metallic catalyst media (18) is inductively heated in order to ignite the chemical reaction and after ignition the inductive heating is suspended and the exotherm of the chemical reaction is thereafter relied upon to sustain the reaction temperature. Such a reactor and method of operation is particularly useful for continuous production of hydrogen cyanide by the Andrussow process.
Patent CA-2294343-A1 (CA)
Inventor: SUGRUE MICHAEL F
IPC: C07D513/04
Filed: 1998-06-22
Abstract: There is disclosed a method for increasing retinal and optic nerve head blood velocity by topical application of a composition comprising carbonic anhydrase inhibitors and hypotonic xanthan gum to the eye.
Patent CA-2294972-A1 (CA)
Title: Display and navigation method for large data files containing graphic elements, and method for compressing files containing textual, graphic or image information
Inventor: KRAFT STEFFEN
IPC: G06F17/30
Filed: 1998-06-02
Abstract: The invention relates to a display and navigation method for large data files containing graphic elements, in which the relevant data sections are displayed or presented on a monitor. In accordance with the invention, visual and controlled division of the display surface of the monitor takes place, preferably in a Cartesian co-ordinate grid with a centre field and surrounding edge fields. The data files necessary for the first display are then charged from a data base. After this, navigation directions and recharge orders are assigned to each of the edge fields of the grid, so that, when one of the edge fields activated, the data file content representing this field becomes the centre field, while the data file content which was hitherto not displayed, and was on the edge field or adjacent to the edge fields, can be reloaded from the main data file. The remaining, non-activated edge fields, which were adjacent to the hitherto centre field, are moved away from the selected navigation direction, or optionally removed from the monitor display. During navigation, reloading of the adjacent data file content takes place by means of the edge fields and the movement of the existing data files for the centre field, and by means of the edge fields which are not activated during navigation. This enables acceleration of the whole display process.