baber/WOPTO huggingface dataset:
Patent CA-2219832-A1 (CA)
Inventor: WOLF ELMAR
IPC: C08G18/80
Filed: 1997-10-31
Abstract: Disclosed is a polyisocyanate having a built-in HALS stabilizer, which is an adduct of aliphatic,  (cyclo)aliphatic or cycloaliphatic diisocyanate and a compound of the formula:                                   (wherein A is H or R-CH(OH)-CH2-; R is H or (C1_20)alkyl or cycloalkyl and X is H, CH3, CH3CO- or R-CH (OH)-CH2-).  The polyisocyanate is useful for a polyurethane coating.
Patent CA-2219970-A1 (CA)
Title: Reforming apparatus
Inventor: FILIPPI ERMANNO
IPC: C10G59/00
Filed: 1997-11-03
Abstract: A reforming apparatus of the type comprising an indirect heat exchange zone (5) for the reforming reaction of a gaseous flow comprising methane and steam into CO, CO2, and H2, is distinguished by the fact that it comprises advantageously a plurality of floating-head tubes (6) containing a reforming catalyst, a chamber (9) for collection of the reaction products positioned downstream of the tubes (6), and a duct (15) open in said chamber (9) for extraction of the reaction products from the apparatus.
Patent CA-2220291-A1 (CA)
Title: Multilayer thin film dielectric bandpass filter
Inventor: CUSHING DAVID HENRY
IPC: G02B6/293
Filed: 1997-11-05
Abstract: A design for producing bandpass filters with passbands that are centered at the same wavelength for each mode of polarization. Filters are of the all-dielectric type that consist of single and multiple cavities of bandpasses. All of the layers are of the Quarter Wave type for ease of manufacture with the possible exception of the last few layers being modified to reduce reflection into a new media. The basic structure of the multi-layer bandpass filter is as follows: (XY)n(YY)(XX)m(YY)(YX)n where n and m are integers and wherein X is one of a high refractive index layer and a low refractive index layer; and, wherein Y is the other of the high and low refractive index layer, X and Y being opposite indexes of refraction.
Patent CA-2220411-A1 (CA)
Title: Impact modified (meth)acrylic polymers
Inventor: TREADGOLD JONATHAN MARK
IPC: C08F265/06
Filed: 1996-05-23
Abstract: A multistage core-shell particle consisting of a core, a first shell and optionally a second shell, substantially free from vinylically unsaturated compounds having at least two equally reactive double bonds, wherein: (i) the core contains a first (meth)acrylic polymer, (ii) the first shell contains a low Tg polymer comprising 0 to 25 % by weight of a styrenic monomer and 75 to 100 % by weight of a (meth)acrylic monomer, the (meth)acrylic monomer capable of forming a homopolymer having a glass transition temperature (Tg) in the range from -75 to -5 °C, and which first shell represents more than 65 % by volume of the combined volume of the core and first shell; (iii) the second shell, when present, contains a second (meth)acrylic polymer which may be the same or different from the first (meth)acrylic polymer, and (iv) the core and first shell together contain from 0.5 to 1.0 % by weight of a graft-crosslinker. A composition and a polysiloxane-free moulded article containing residues obtainable from such core-shell particles. A method of forming a moulding article having improved impact resistance using an impact modifier formed from such core-shell particles.
Patent CA-2221909-A1 (CA)
Title: Ink-jet printer with switch valve between caps for printheads and pump
Inventor: TOOYAMA SINTARO
IPC: B41J2/185
Filed: 1997-11-19
Abstract: A switch valve contacts flexible tubes that connect caps for printheads to a pump. The switch valve includes a tube support. The support is formed with grooves receiving intermediate portions of the flexible tubes, which tubes are curved along rounded corner sidewalls that project toward an entrance of the support. A rotary member controls pivotal motion of a lever. The lever pivots in one direction to squeeze one of the tubes against the associated one of the corner sidewalls, and it pivots in the opposite direction to squeeze the other one of the tubes.
Patent CA-2224463-A1 (CA)
Inventor: SULLIVAN DAVID A
IPC: A61K38/18
Filed: 1996-06-04
Abstract: L'invention concerne l'application topique sur la surface de l'oeil ou sur les régions contiguës d'une préparation contenant une quantité à effet thérapeutique d'un androgène ou d'un analogue d'un androgène ou encore du facteur de croissance transformant bêta, pour atténuer les symptômes chroniques et aigus du type dessèchement de l'oeil dans le cas du syndrome de Sjögren. L'invention concerne la mesure de l'augmentation du niveau de facteur de croissance transformant bêta en tant que test diagnostic pour mesurer l'effet thérapeutique du traitement topique avec un androgène ou un analogue d'un androgène.
Patent CA-2225889-A1 (CA)
Title: Dispersion-shifted fiber
Inventor: SASAOKA EISUKE
IPC: C03B37/014
Filed: 1997-12-23
Abstract: The present invention aims to provide a dispersion-shifted fiber which can effectively restrain nonlinear optical effects from occurring and has a configuration suitable for long-haul light transmission.  The dispersion-shifted fiber has, as various characteristics at a wavelength of 1,550 nm, a dispersion level of 1.0 to 4.5 ps/nm/km in terms of absolute value, a dispersion slope not greater than 0.13 ps/nm2/km in terms of absolute value, an effective core cross-sectional area not less than 70 µm2, and a transmission loss not greater than 0.25 dB/km with respect to light in a 1.55-µm wavelength band.
Patent CA-2226550-A1 (CA)
Inventor: HARTMAN FREDERICK ANTHONY
IPC: C11D3/16
Filed: 1996-07-11
Abstract: Clear or translucent fabric softening compositions having a biodegradable fabric softening active and an added chelating agent are disclosed. The biodegradable fabric softening active preferably has formula (1), wherein each R substituent is hydrogen or a short chain C1-C6, preferably C1-C3 alkyl or hydroxyalkyl group, e.g., methyl (most preferred), ethyl, propyl, hydroxyethyl, and the like, benzyl, or mixtures thereof; each m is 2 or 3; each n is from 1 to about 4, preferably 2;  each Y is -O-(O)C-, -(R)N-(O)C-, -C(O)-N(R)-, or -C(O)-O-, preferably -O-(O)C-; the sum of carbons in each R1, plus one when Y is -O-(O)C-or -(R)N-(O)C-, is C6-C22, preferably C12-22, more preferably C14-C20, but no more than one R1 or YR1 sum being less than about 12 and then the other R1 or YR1 sum is at least about 16, with each R1 being a long chain C5-C21 (or C6-C22), preferably C9-C20 (or C9-C20), most preferably C11-C17 (or C12-C18), straight, branched, unsaturated or polyunsaturated alkyl, the average Iodine Value of the parent fatty acid of the R1 being from about 20 to about 140. The chelating agent is preferably diaminetriaminepentaacetic acid. The compositions display excellent clarity with a percentage haze in the transmission mode of a Hunter Color analysis of less than 90 %, preferably less than 50 %.
Patent CA-2226959-A1 (CA)
Title: Method of creping a paper
Inventor: KNIGHT PAUL
IPC: C08G69/48
Filed: 1996-09-06
Abstract: The present invention relates to a method of creping a paper which comprises applying a water-soluble, non-thermosetting polyamidoamine or modified polyamidoamine directly to the surface of the creping drum in an apparatus for producing soft, ligthweight pager web suitable for making sanitary paper products such as bathroom and facial tissue, paper towels and napkins.
Patent CA-2228254-A1 (CA)
Title: Process for producing erythromycin derivatives
Inventor: OISHI KAZUHIRO
IPC: A61K31/70
Filed: 1996-08-05
Abstract: The hydroxyl group in position 2' of erythromycin A is acetylated, the hydroxyl group in position 4" is formylated and subjected to reaction for the formation of hemiketal; subsequently, the hydroxyl group in position 11 is oxidized and the hydroxyl group in position 12 is alkylated, followed by removal of the acetyl group in position 2' and the formyl group in position 4" to yield a compound; the compound is reacted with benzyloxycarbonyl chloride under basic conditions and, thereafter, the introduced benzyloxycarbonyl group is removed and the nitrogen atom in position 3' is subsequently alkylated, followed by conversion to a fumarate in a crude crystal form, which is then recrystallized from an alcoholic solvent, followed by another recrystallization with hydrous ethyl acetate to produce a fumarate of the general formula (II):    (where R1 is a lower alkyl group and R2 is a lower alkyl group).
Patent CA-2229922-A1 (CA)
Title: Cellular communications system
Inventor: FEENEY GERALD
IPC: H04M3/436
Filed: 1996-08-16
Abstract: In a cellular communications system comprising a plurality of zones, details of authorized services for each mobile terminal are stored at a central register. The central register is accessed on entry of a visiting mobile terminal into that zone whereby to retrieve the service details for that mobile, the retrieved details are stored at a local register and compared with a set of services capable of being supported within the zone, and providing to the terminal information relating only to those services that are both authorized for use by the terminal and capable of support within the zone. In a preferred embodiment, information relating to a service which cannot be supported in a particular zone is not forwarded to the local register thus avoiding message rejection by the local register.
Patent CA-2234308-A1 (CA)
Title: System for dividing data between various data packets when the amount of data to be transmitted exceeds the capacity of one of the data packets
Inventor: LUDTKE HAROLD AARON
IPC: H04N7/24
Filed: 1998-04-07
Abstract: A method for transmitting information between each electronic unit, comprising the steps of (a) transmitting information whose amount does not exceed a predetermined data amount, (b) determining whether or not the predetermined data amount is larger than a desired information amount, (c) when the determined result at step (b) is No, transmitting remaining information for the predetermined amount or less, and (d) repeating the steps (a) to (c) until there is no remaining information.
Patent CA-2239502-A1 (CA)
Title: Clamping device for the releasable connection of two profile pieces
Inventor: ZUELLIG KURT
IPC: F16B7/04
Filed: 1996-12-16
Abstract: The clamping device is designed releasably to secure two sections, in one of which can be fitted and secured an insert core (1) in which an axially movable slide (7) bears two pivoting clamping components (11), each with a clamping hook (13; 14) which can be at least partially inserted into an aperture in a second suction (15) in order to exert a clamping pressure against a part of said second section (15), which partly closes the aperture. The insert cone (1) has eccentric means (5) to move the slide (7) axially. In the insert core (1) there are two oblique surfaces (43) to move the clamping component transversely during its axial movement. Besides the clamping hooks (13; 14), the clamping component (11) has a strip-shaped section with an end bent to form a hinged hook (34). The slide (7) has a flat end section (9) with a recess (10) in which the hinged hooks (34) can pivot but with little clearance.
Patent CA-2240163-A1 (CA)
Title: Silicone pseudogel
Inventor: TIFFANY JOHN S
IPC: A61L27/00
Filed: 1996-12-12
Abstract: A silicon gel-like material having a reduced content of extractable silicone fluid and having rheological properties approximating human tissue. The gellike material or "pseudogel" is useful for filling an implantable prosthesis. The present filler material or pseudogel is produced by controlling the crosslinking of the silicone polymer network such that every polymer chain contains only terminal vinyl groups but not all of the reactive groups participate in the cross-linking reaction.
Patent CA-2243948-A1 (CA)
Title: Use of human chorionic gonadotropin in the treatment of kaposi's sarcoma
Inventor: SCHWARZ SIEGFRIED
IPC: A61K38/24
Filed: 1996-10-11
Abstract: The use of hCG Beta-core or hCG fragments, deglycosylated hCG in the treatment of Kaposi's sarcoma is described. Inhibition of tumour production or regression on a variety of KS cell lines is shown.  Purified hCG preparations do not inhibit the growth of KS cell lines.
Patent CA-2244163-A1 (CA)
Title: Endoscopic robotic surgical tools and methods
Inventor: SMITH KEVIN W
IPC: A61B19/00
Filed: 1997-02-03
Abstract: The methods and devices of the invention include an encoder (12), an endoscopic robotics instrument, and an encoder/robotics instrument interface. A preferred embodiment of the encoder has a chest/shoulder plate (214) provided with telescoping tubes, and joints. Each joint is provided with a direct drive potentiometer to monitor movement and provide a corresponding signal. The chest plate (214) is preferably adaptable to a large range of human chest sizes and the telescopic segments are strapped to the arms of the practitioner at the elbows. A pistol grip is provided at the wrist end of the telescopic segments. According to the presently preferred embodiment, the encoder (12) encodes flexion and rotation at the shoulder (34), elbow (36) and wrist (38) of each arm in addition to gripping at each hand (42). The encoding device is coupled to a circuit (14) which operates a servo system (16). The servo system (16) includes a series of servo motors. A series of pulleys corresponding to the number of servo motors (60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 86). The robotics instrument preferably comprises two arms (18) mounted at the distal end of a multi-lumen tube (150). Each arm has rotational and flexion joints (22, 24, 26, 28, 30, 32) corresponding to the shoulder, elbow and wrist of the practitioner. Tendons are coupled to the pulleys of the servo motors (60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86), and are fed through the multi-lumen tube to the joints (22, 24, 26, 28, 30, 32) of the two arms.
Patent CA-2245102-A1 (CA)
Title: Control system for automatic transmission for vehicle
Inventor: KOYAMA HIDEO
IPC: F16H61/16
Filed: 1998-08-17
Abstract: It is an object of the present invention to ensure that even when slipping is generated during the upshifting from a first gear shift stage to a second gear shift stage on ice or the like, a control for prohibiting the upshifting from the second gear shift stage to a third gear shift stage can be carried out precisely. A control system is designed so that when a slipping state is detected on ice having a lower road surface friction coefficient or the like by a slipping state determining means, the upshifting of an automatic transmission from a second gear shift stage to a third gear shift stage is prohibited. In this control system, the time required for the upshifting from a first gear shift stage to the second gear shift stage is measured. If such time is shorter than a first predetermined time, it is determined that a slipping has been generated during the upshifting, and the upshifting from the second gear shift stage to the third gear shift stage is prohibited for a second predetermined time. Thus, even when the determination of the slipping state by the slipping-state determining means is not in time, the further upshifting of the automatic transmission is prohibited. Therefore, it is possible to reliably avoid the carrying-out of undesirable upshifting.
Patent CA-2249232-A1 (CA)
Inventor: PELECKIS ANTHONY J
IPC: H01R4/36
Filed: 1997-02-12
Abstract: Electric barrier terminal strips (10) which enable conversion from a screw type format of wiring terminals to a higher pitch row of female connectors. To compensate for the larger spacings between the screw type style format of screw wiring terminals, the screw type wiring terminals (14, 16) can be arranged in first and second rows, either staggered or not, one on each side of the row of female connectors. Individual female connectors (30) in the row are connected alternately with a screw wiring terminal from the first row and a screw wiring terminal from the second row. The single row of female connectors can be arranged in a EURO format housed within a EURO style shroud, for connection to a row of conductor pins (42) in a EURO style header (36).
Patent CA-2249642-A1 (CA)
Title: Method and apparatus for producing and using plasma
Inventor: JOUANNEAU ANDRE
IPC: G21B3/00
Filed: 1996-03-22
Abstract: This invention relates generally to the field of plasmas and, more particularly, to the creation of very high density stable plasmas inside solids. Very high density stable plasmas have many applications, including among many others, plasma solid fusion, transmutation reactions, matter, particles and energy storage, etc... For decades, scientists have tried unsuccessfully to increase the storage density of particles such as hydrogen through diverse methods such as liquefaction or magnetic confinement. To date the results have not been up to expectations. This invention provides the means and technique necessary to increase the density of particles to another order of magnitude by showing how to create a very high density stable plasma inside a solid. This invention also presents the means and techniques necessary to exploit some of the obvious applications, such as plasma solid fusion, energy, particles, and heat production, among many others.
Patent CA-2250284-A1 (CA)
Title: A perceptual compression and robust bit-rate control system
Inventor: PAULS RICHARD JOSEPH
IPC: H04N7/30
Filed: 1998-10-14
Abstract: A method of compressing a source (e.g., a video signal, a still image, an audio signal, etc.) is disclosed that does not require the transmission of changes in the quantization step size and more evenly affects the fidelity of the source than techniques in the prior art that change the quantization step size at various points in the compression process. An illustrative embodiment of the present invention involves transforming a source (e.g., a video frame, audio sample, etc.) into m coefficients, in well-known fashion, wherein each of the m coefficients is represented by a known number of bits. Then, only n of the m coefficients are used for transmission or storage, as appropriate, where the n coefficients are more perceptually significant than the m-n coefficients not used.
Patent CA-2250346-A1 (CA)
Inventor: GUERET JEAN-LOUIS
IPC: A45D33/00
Filed: 1998-10-23
Abstract: L'invention est relative à un boîtier de maquillage ou analogue comprenant un corps logeant une réserve de produit, un couvercle et un organe d'étanchéité comportant une lèvre déformable s'étendant autour de la réserve de produit lorsque le boîtier est fermé, le couvercle, respectivement le corps du boîtier, venant appuyer sur ledit organe d'étanchéité lorsque le boîtier est fermé. L'organe d'étanchéité est assujetti à une pièce de support (11), rapportée sur le corps (2) du boîtier, respectivement sur le couvercle, et s'étendant au moins en partie sous ladite lèvre déformable d'étanchéité (15).
Patent CA-2250816-A1 (CA)
Title: Liquid metering
Inventor: PRICE BARRY LEONARD
IPC: G01F1/68
Filed: 1997-04-01
Abstract: A meter (2) to measure the volumetric flow rate of a liquid, for example water, is formed with a pipe (4) forming a liquid flow path containing a low power electrical heater (12). A temperature sensor (19) measures the temperature T1 of the liquid adjacent to an upstream end of the heater and a temperature sensor (20) measures the temperature T2 of the liquid adjacent to a downstream end of the heater. The heater (12) adds heat power of a value P to the liquid. A control arrangement (18) comprising computer means calculates the flow rate Q using the expression (a) where ST1 and DT1 are respectively the specific heat capacity of the liquid and the density of the liquid at the temperature T1 measured by the sensor (19).
Patent CA-2251107-A1 (CA)
Inventor: H USSLER HUBERT
IPC: B66B1/04
Filed: 1998-02-04
Abstract: The invention concerns a method and device for controlling a hydraulic lift, wherein a lift car (2) can be moved upwards and downwards in a lift shaft (1). The lift car (2) is connected to a reciprocating piston and is driven by an oil pump (40) which delivers pressurized oil between a tank (41) and a lifting cylinder (3). The oil pump (40) is driven by a motor (39) which is fed by a controllable power-supply part (28). The speed of the lift car (2) is detected by a sensor (13). A control and regulating unit (10) controls and regulates the assemblies influencing the movement of the lift car (2), that is the motor (39) and a valve unit (43). During upwards travel, the speed of the lift car (2) is controlled by regulating the motor (39). According to the invention, during downwards travel, a regulating and controlling effect is exerted on the valve unit (43). At low speeds when the lift car (2) is starting to move or braking, the speed is regulated by actuating the valve unit (43); at faster speeds, such as during upwards travel, the speed is regulated by regulating the motor (39).
Patent CA-2252988-A1 (CA)
Title: Method and device for trans myocardial cryo revascularization
Inventor: AMMAR RONY
IPC: A61F2/06
Filed: 1998-12-01
Abstract: Cryosurgery method and device for performing traps myocardial revascularization are provided. The method includes: forming trans myocardial channels by cryoablating selected portions of the myocardial tissue. The cryosurgery device includes:(a) an operating member having an operating surface and a hollow; and a housing member connected thereto; (b) a first passageway extending along the device for providing high pressure gas to the operating member, the first passageway including a primary Joule Thomson heat exchanger in the form of a primary orifice located on the first passageway for enabling expansion of gas within the hollow of the operating member, thereby providing a desired temperature to the surface of the operating member; (c) a second passageway extending through the length of the housing member for evacuating gas from the operating tip to atmosphere; (d) a third passageway extending along a portion of the device and including a secondary Joule Thomson heat exchanger for providing a desired temperature to gas flowing through the first passageway. Method and device according to the present invention enable to form durable transmyocardial channels without causing considerable trauma to the myocardial tissue.
Patent CA-2253507-A1 (CA)
Inventor: CASELLA DAVID WAYNE
IPC: B08B9/053
Filed: 1997-05-02
Abstract: An assembly (1) for air-assisted insertion of a draw line (6a) inside and along a conduit (2) from an entry end of said conduit to an exit end; the assembly comprising a source of pressurised air (8); an apparatus (4) for sealing an end (16) of said conduit (2) through or about said sealing apparatus (4), a through passage in or in said sealing apparatus which receives a draw line (6a) such that when said sealing apparatus (4) engages the entry end (16) of said conduit, the draw line is capable of entering the apparatus (4) inside the conduit, a shuttle (6, 23) connected to a leading end of the draw line (6a) responsive to delivery of air from said pressurise air source (8) and which urges the draw line (6a) along the conduit (2) until it exits the conduit (2) via said exit end.
Patent CA-2253825-A1 (CA)
Title: Recovery vehicle
Inventor: THORNTON KEITH
IPC: B60P3/12
Filed: 1997-05-02
Abstract: A recovery vehicle for rescuing stranded vehicles from confined or restricted areas comprises a wheeled chassis (2, 6) on which is mounted a vehicle support body (40) movable by hydraulic means (44) between an inoperative position superimposed on the chassis (2, 6) and an operative position extending rearwardly of the chassis (2, 6), the vehicle support body (40) being rotatable about a vertical axis relative to the chassis (2, 6) by a primary hydraulic ram located substantially within the confines of the chassis (2, 6), the vehicle support body (40) also being pivotal on the chassis (2, 6) to engage the rear end of the vehicle support body on the ground when in its operative position. Such an arrangement enables recovery of stranded vehicles other than aligned with the recovery vehicle.