baber/WOPTO huggingface dataset:
Patent CA-2132558-C (CA)
Title: Method and apparatus for reduction of optical communication system impairments
Inventor: DARCIE THOMAS EDWARD
IPC: H04B10/572
Filed: 1994-09-21
Granted: 1999-03-16
Abstract: Abstract A method and apparatus for reducing noise in optical communication systems is effected by modulating or dithering the laser output frequency at a relatively low rate.  The laser may be dithered by applying a low frequency sine wave either to the resistive heater in the phase control section or to the laser's active section directly.  By dithering the laser at a low frequency and at a sufficiently high amplitude to cause large optical frequency excursions, the noise caused by multipath interference will decrease without substantially increasing negative dispersion effects.
Patent CA-2135118-C (CA)
Inventor: GARRETT RICHARD H
IPC: C10L3/10
Filed: 1994-11-04
Granted: 2005-08-02
Abstract: A method and apparatus for powering a fluid pump (P) for circulation of a regenerated liquid absorber from a treating vessel or regenerator (R) to a liquid/gas contacting vessel (T) where the liquid absorber removes a predetermined component from a gas. The fluid pump (P) is driven by a shaft from fluid motor (M) and an auxiliary electric motor (E, E-1) assisting the fluid motor (M). The fluid pump (P) receives the entire output of regenerated liquid absorber from the regenerator (R) for pumping the regenerated liquid absorber to the contacting vessel (T). A bypass fluid conduit (49, 48) is utilized for initial circulation of glycol during the start up operation. A glycol measuring device (42) is effective for removing trapped air in conduits (18, 15) between the reboiler (R) and the contactor (T), and in bypass conduits (48, 49) in addition to measuring the flow rate for the liquid absorber.
Patent CA-2150154-C (CA)
Inventor: KO YA-TIEN
IPC: H04L29/06
Filed: 1995-05-25
Granted: 1999-05-18
Abstract: A method and apparatus for generating a conformance test data sequence of minimal length to verify that a device conforms to a protocol entity which can be characterized by a simplified extended finite state machine. The method generates an expanded directed graph of the protocol wherein each state is represented by a state vertex and a dummy vertex which are connected to other similar state and dummy vertices by directed edges in a configuration corresponding to the operation of the machine. The directed edges are then assigned traversal numbers corresponding to the minimum number of times a respective directed edge need be traversed in order to test values in a predetermined test data set. The traversal numbers of the expanded directed graph are balanced to form a symmetric expanded directed graph. An Euler tour and a corresponding unique input-output sequence of the last state of the Euler tour are generated to form the conformance test data sequence. The generated conformance test data sequence exhaustively tests the values in the test data set, and achieves an efficiency in conformance testing by minimizing the amount of time required to perform the conformance test.
Patent CA-2150870-C (CA)
Inventor: HANSENNE ISABELLE
IPC: A61K8/00
Filed: 1995-06-02
Granted: 1999-08-17
Abstract: Cosmetic compsns for topical use, esp for protecting the skin and/or hair from the effects of light, contain 4-methylbenzylidene-camphor (I) as a UV-B filter, and 2-ethylhexyl 2-cyano-3,3-diphenylacrylate (II) in an amt sufficient to solubilise (I). Also claimed is a cosmetic treatment process for protecting the skin and/or hair against UV radiation, esp sunlight, comprising application of a compsn as above.
Patent CA-2151069-C (CA)
Title: Manhole adjusting extension ring section
Inventor: WIEDRICH DWIGHT G
IPC: E02D29/14
Filed: 1995-06-06
Granted: 1997-01-21
Abstract: A  molded  plastic  extension  member  for  use  in increasing the height of manholes, or catch basins when surfacing or resurfacing a roadway is described.  A wedge to adjust the angle of the catch basin support frame or the manhole  cover  support  frame  is  also  described.    The extension includes a pocket for reducing the total surface area of the molded plastic member.   It also includes a shoulder that interlocks with either the manhole cone, the catch basin cone, or with other stackable molded plastic members.   The extension also contains a planer support surface which provides rigidity and support, and provides a surface for caulking to be applied to form a watertight seal.
Patent CA-2153543-C (CA)
Title: Solvant rich gelled cosmetic and/or dermatologic composition containing hollow particles; uses thereof
Inventor: SEBILLOTTE-ARNAUD LAURENCE
IPC: A61K8/00
Filed: 1995-07-10
Granted: 1999-09-21
Abstract: Cosmetic and/or dermatological compsn. contains a hydrophilic medium, at least one gelling agent (I) and hollow particles (A). The medium contains at least 20% organic solvent and less than 50% water (both by wt. on total compsn.).
Patent CA-2167977-C (CA)
Title: Dispositif de traitement d'un melange heterogene notamment de miel et de cire
Inventor: FEDON JEAN
IPC: A01K59/04
Filed: 1996-01-24
Granted: 1999-10-05
Abstract: L'invention concerne un dispositif de traitement d'un mélange hétérogène et plus particulièrement de séparation de la cire et du miel dans un mélange obtenu à la suite d'une opération de désoperculation, caractérisé en ce qu'il comprend une trémie d'alimentation débouchant sur un fourreau muni de trous, dans lequel est disposé une vis d'Archimède entraînée en rotation par une motorisation, des moyens d'évacuation des solides et des moyens de récupération des liquides.
Patent CA-2172461-C (CA)
Inventor: ROBINSON DARRELL
IPC: G01R11/04
Filed: 1996-03-22
Granted: 1999-11-09
Abstract: A socket adapter housing has a plurality of line and load blade terminals and jaw contacts.  An electrical power disconnect device, mounted in the housing, has contacts switchable between closed and open states, the contacts being serially connected between the line blade terminals and the line jaw contacts.  Rigid bus bars are fixedly connected to terminals on the power disconnect device extending from the switchable contacts and to the line blade and line jaws to fixedly mount the power disconnect device in the socket adapter housing. Surge suppression devices are connected between the load blade terminals and ground potential.  An insulating safety shield is mounted in the housing and completely surrounds the line and load jaw contacts.  Alternately, the housing includes a watthour meter receiving portion containing the power disconnect means and the line and load blade terminals and jaw contacts.  An auxiliary housing is affixed along with the watthour meter receiving housing to a common base and contains the surge suppression devices.  A cover is removably mountable on the auxiliary housing.
Patent CA-2176184-C (CA)
Title: Hydrocarbon gas processing
Inventor: CAMPBELL ROY E
IPC: F25J3/02
Filed: 1996-05-09
Granted: 2004-07-13
Abstract: A process for the recovery of ethane, ethylene, propane, propylene and heavier hydrocarbon components from a hydrocarbon gas stream is disclosed. The stream is cooled to partially condense it, then separated to provide a first vapor stream and a first condensed stream. The first vapor stream is divided into first and second streams, then the first stream is combined with the first condensed stream.      The combined stream is cooled and expanded to an intermediate pressure to partially condense it, then separated to provide a second vapor stream and a second condensed stream. The second vapor stream is cooled at the intermediate pressure to condense substantially all of it and is thereafter expanded to the fractionation tower pressure and supplied to the fractionation tower at a top feed position. The second condensed stream is subcooled at the intermediate pressure, expanded to the tower pressure, and is supplied to the column at a first mid-column feed position. The second stream is expanded to the tower pressure and is then supplied to the column at a second mid-column feed position. The quantities and temperatures of the feeds to the column are effective to maintain the column overhead temperature at a temperature whereby the major portion of the desired components is recovered. In an alternative embodiment, the combined stream is cooled at essentially inlet pressure to partially condense it, then separated at pressure to provide the second vapor stream and the second condensed stream.
Patent CA-2178876-C (CA)
Title: Bale wrapping apparatus
Inventor: TARDIF JEAN-ROCH
IPC: A01F15/07
Filed: 1996-06-12
Granted: 2001-07-24
Abstract: A bale wrapping  apparatus  including  a  sled with a shallow angle to the horizontal with a trough for receiving bales. A carriage mounted pusher plate driven  longitudinally  of  the  trough  to  push  bales through the bale wrapping station, and a delivery apron including an endless belt providing a friction free surface. The sled mounts skis which provide a degree of friction when the sled advances as a reaction of the pressure being placed on the end of the bales by the pusher plate so as to allow compression of the bales.
Patent CA-2181001-C (CA)
Inventor: PITTS BARBARA R
IPC: G09F15/00
Filed: 1996-07-11
Granted: 1999-10-12
Abstract: Improved posterboard is formed from a rectangular posterboard having vertical side edges and horizontal top and bottom edges.  Guide marking are applied to the posterboard.   The guide markings are visually perceptible at a writing distance away from the posterboard, and substantially  imperceptible at a viewing distance length away from the posterboard.
Patent CA-2183251-C (CA)
Title: Dispositif a engrenage souple du type haut-de-forme
Inventor: TAKIZAWA NOBORU
IPC: F16H49/00
Filed: 1995-12-14
Granted: 2005-10-18
Abstract: Un engrenage extérieur souple du type haut-de-forme (13) appartenant à un dispositif à engrenage souple (11) comporte une partie de tambour (22), une membrane (23) et une partie formant un bossage (25). Une partie mince dont l'épaisseur représente 80 % de celle d'une partie du corps principal de la partie de tambour (22) se trouve entre la partie du corps principal et une partie courbe (222). L'épaisseur de la membrane est à son maximum sur le pourtour interne de sa circonférence (point A), à son minimum dans sa partie centrale (point B) et elle est légèrement amincie par rapport à sa valeur maximale sur le pourtour externe de sa circonférence (point C). C'est une série de courbes (223, 224) qui délimite le contour de la membrane de sorte que les variations d'épaisseur sont régulières dans l'ensemble. Il est possible de réduire la concentration des contraintes s'exerçant sur les pourtours intérieur et extérieur de la circonférence afin de mieux les répartir, en agençant la partie mince (221) et en configurant l'épaisseur de la membrane, comme décrit ci-dessus. Il est, de la sorte, possible de mettre au point un dispositif à engrenage souple du type haut-de-forme, pourvu d'une longueur axiale raccourcie et d'un diamètre extérieur réduit.
Patent CA-2183757-C (CA)
Title: Apparatus and method for quantification of biological material in a liquid sample
Inventor: WARDLAW STEPHEN C
IPC: B65D75/34
Filed: 1995-02-22
Granted: 2000-07-04
Abstract: An article (A) adapted for holding a liquid sample for quantification of biological material in the liquid sample. The article includes a bag having an upper surface sheet (1) and a lower surface sheet (2) enclosing a volume therebetween. The bag has an upper opening through which the liquid sample can be poured into the volume in the bag. The bag also has a plurality of partitions (9) configured to separate one or more portions (3) of adequate sample in the bag. Also provided is a passage through which a liquid sample can be distributed throughout the volume in the bag. The bag is made of material which can be caused to form discrete non-permeable compartments for holding separate aliquots of the liquid sample.
Patent CA-2185009-C (CA)
Title: Method and device for removing swellable polymer particles from a liquid dispersion
Inventor: BARON DAVID T
IPC: B01D29/00
Filed: 1995-03-08
Granted: 2004-11-02
Abstract: The invention relates to a method for removing swellable polymer particles from a solution used to remove coatings of resists from printed circuit boards.      The dispersion resulting during coating removal, containing fine resist particles, is passed over a screen in order to separate the particles. For this purpose the dispersion is firstly passed through a homogenising and distributing device, in which the dispersion is thoroughly mixed and then very uniformly applied on to the screen. The homogenising and distributing device comprises an inner tube with a plurality of holes and an outer tube with a slot.      Furthermore, the device comprises means for circulating the coating removal solution and the dispersion.
Patent CA-2190810-C (CA)
Inventor: PARNES BARUCH
IPC: B66F9/14
Filed: 1996-11-20
Granted: 2004-12-28
Abstract: A fork lift comprises retractably extendible loading prongs for lifting loads from either side of a vehicle such as a non-designated truck or trailer, and a mechanism for displacing said prongs over and across the vehicle.
Patent CA-2197282-C (CA)
Title: Granular media filter including media settler assembly
Inventor: BISKNER CHARLES D
IPC: B03D1/14
Filed: 1997-02-11
Granted: 2005-06-28
Abstract: A granular media filter including a settler assembly for reducing media loss during high-turbulence washing of media in the granular media filter. The settler assembly is comprised of plates, tubes, or other porous materials placed between a system of baffles and a conventional backwash trough. The settler assembly reduces turbulence near the overflow weir edge of the backwash trough, thereby reducing media carry over with the backwash water into the backwash trough. The trough baffle settler assembly will allow higher backwash rates per backwash with the same or lower media losses than experienced with previous trough-baffle designs, thereby reducing costs of construction and operation of granular media filter systems. The settler assembly is particularly adapted for use with granular media filters employing simultaneous application of air and water to produce a high turbulence backwash.
Patent CA-2197285-C (CA)
Title: Method of platinum recovery
Inventor: NARITA KATUTOSHI
IPC: C22B11/06
Filed: 1997-02-11
Granted: 2001-08-28
Abstract: A neutralizing reagent is added to a solution of chloroplatinic acid containing impurities to adjust the pH value of the solution to 5.5 - 7.0, the insoluble impurity compounds that precipitated in this first neutralization step is filtrated off, a neutralizing reagent is added to the first filtrate of chloroplatinic acid to adjust the pH value of the solution to 9.5 - 10.5, the insoluble impurity compounds that precipitated out in the second neutralization step is filtrated off, hydrochloric acid is then added to the second filtrate in which the insoluble impurity compounds have been removed, and ammonium chloride is added to the processed solution to convert platinum compound to ammonium chloroplatinate, which is intensely heated to yield platinum sponge.  The preferred neutralizing reagent is NaOH or KOH.  Filtration is preferably performed with a filter of which opening size is equal or less than 0.3 µm.
Patent CA-2199803-C (CA)
Title: Crepine d'incendie
Inventor: SUNDHOLM GORAN
IPC: A62C31/05
Filed: 1995-09-12
Granted: 2006-11-21
Abstract: L'invention concerne une crépine d'incendie comprenant, en mode d'attente, un dispositif de déclenchement (20) sensible à la chaleur et placé en contact étroit avec une tige (15). Afin d'assurer la régularité et la rectitude de la charge s'exerçant sur le dispositif de déclenchement (20), ainsi qu'une pulvérisation régulière du liquide d'extinction sous forme de brouillard liquide, la crépine d'incendie est caractérisée par le fait que la tige (15) est montée dans un canal (12) possédant une entrée (10) de liquide et une sortie (13) vers des buses placées, de préférence obliquement, et s'appuie contre la paroi dudit canal (12), de façon pratiquement ou totalement coulissante, des deux côtés de l'entrée (10) de liquide, afin d'équilibrer la pression du liquide au niveau de ladite entrée, quand la crépine d'incendie est en mode d'attente et qu'une buse (27) dirigée vers le centre par rapport aux buses placées obliquement, se trouve à l'extrémité de la tige (15) en face du dispositif de déclenchement (20).
Patent CA-2200950-C (CA)
Title: Bone anchor installation tool
Inventor: WENSTROM RICHARD F JR
IPC: A61B17/04
Filed: 1995-09-27
Granted: 2006-05-30
Abstract: A bone anchor installation (5) for deploying a bone anchor in bone is provided. The sleeve handle (15) accomodates the sleeve (15).  The shaft (25) can assume a retracted position within the sleeve.
Patent CA-2202117-C (CA)
Title: Self-compensating intruder detector system
Inventor: CLIFTON RONALD WALTER
IPC: G08B29/18
Filed: 1997-04-08
Granted: 2003-03-04
Abstract: A method of operating an intruder detector system comprising deploying plural intruder sensors in or adjacent a region to be protected, transmitting signals from each sensor to a processor, the signals relating to at least one local environmental ambient condition, processing the signals to determine a common ambient condition associated with the intruder sensors, transmitting a control signal to each of the sensors, and automatically adjusting the sensors in response to the control signal to substantially vary detection parameters thereof.
Patent CA-2204579-C (CA)
Inventor: BROTHERSTON IAN
IPC: A47C17/175
Filed: 1997-05-06
Granted: 2000-10-17
Abstract: A reclining chair having a back rest member which may be reclined. In one embodiment the reclining chair has means to allow it to be tilted. A pivotable joint is provided along the upper support members of the chair which allow such members to be pivotably bent proximate their midsection thereby allowing a greater degree of tilt of the seat member situate thereon than would otherwise be the case if there was no pivotable joint and the upper support members and the seat member thereon were tilted by simply lowering one end thereof. In another aspect, a lower leg support member is provided which rotatably extends upon the back rest of the chair being reclined, so as to support the calves of a user of the chair in a substantially horizontal position when the chair back is likewise reclined to a substantially horizontal position.
Patent CA-2211982-C (CA)
Title: Substituted indanylidineacetylguanidines, process for their preparation,their use as medicaments or diagnostic and medicaments containing them
Inventor: GUPTE RAVINDRA DATTATRAYA
IPC: A61K31/00
Filed: 1997-07-29
Granted: 2007-09-18
Abstract: Indanylidineacetylguanidines I (see formula I) and their pharmaceutically acceptable salts wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, R10 and X have the meanings given in the claims, are effective inhibitors of the cellular sodium/proton antiport (Na +/H + exchanger), which, in numerous diseases (essential hypertension, atherosclerosis, diabetes and the like) is also increased in those cells which are readily accessible for measurements, such as, for example, in erythrocytes, platelets or leukocytes. They are also advantageous for the preparation of a medicament for the treatment or prophylaxis of disorders of lipid metabolism.
Patent CA-2212744-C (CA)
Inventor: SULTZBAUGH KENNETH J
IPC: A61K9/16
Filed: 1996-03-18
Granted: 2006-10-24
Abstract: An aqueous core microcapsule has a capsular wall provided with a peptide(s) of pre-determined binding specificity(ies) appended to the surface, the wall being the reaction product of an anionic polymer or salt thereof and a polyamine, salt thereof, mixtures thereof, or mixtures thereof with monoamines. The aqueous core may contain an active ingredient(s), and be targeted for delivery to specific cell tissues. The microcapsules are provided as a composition and in a kit with instructions for use in imaging, diagnosis, therapy, vaccination, and other applications.
Patent CA-2213038-C (CA)
Inventor: YANG JIAN
IPC: H04L25/49
Filed: 1997-08-14
Granted: 2001-10-09
Abstract: A blind equalization cost function called the "constrained Hilbert cost function" (CHCF) provides for reliable blind convergence of a two-filter equalizer structure. In particular, the CHCF cost function is designed in such a way that the two filters are constrained to be a Hilbert pair. Advantageously, this technique can be used with any blind equalization algorithms, such as RCA, CMA, and MMA.
Patent CA-2226821-C (CA)
Inventor: MUTZABAUGH DENNIS M
IPC: H04N21/438
Filed: 1998-01-13
Granted: 2001-05-01
Abstract: A symbol sync acquisition circuit for a digital VSB signal finds sync pattern correlations in the incoming signal.          Initially both positive and negative sync pattern correlations are accorded equal weight, with non sync pattern correlations being accorded a negative weight.  Values are accumulated in a segment integrator and stored in a FIFO having a location for each symbol position in a segment.  A comparator initially produces an output when sync pattern correlations are found that add to a given value.  After a relatively small number of correlations, as tabulated in a confidence counter, a VCO is enabled to change its frequency under control of error pulses based upon the symbol sync.  After a greater number of sync pattern correlations, the symbol position in the segment is fixed, sliding to a new symbol location in the FIFO is precluded, the signal polarity is determined and changed, if necessary, and a higher threshold is established for the comparator.  The confidence counter continues to build after lock is attained.          Should confidence be lost, the system resets and acquisition is started from the beginning.
Patent CA-2230630-C (CA)
Inventor: THOMLINSON MATTHEW W
IPC: H04L9/08
Filed: 1996-11-14
Granted: 2004-05-25
Abstract: A method of recovering from a compromise of a root key which is the private key of a first public key-private key pair, the method including the steps of electronically sending out an emergency message (10) indicating that the root key has been compromised and also containing a replacement key (16) and a digital signature (22) which was generated by using the root key; and publishing in an out-of-band channel a value V, wherein V is derived from the emergency message.
Patent CA-2242406-C (CA)
Inventor: SEHESTED MAXWELL
IPC: A61K45/06
Filed: 1997-01-10
Granted: 2009-09-08
Abstract: The present invention relates to a method for selectively killing tumour or metastatic cells within a defined compartment of the organism of a large mammal, in particular a human, said method comprising administering to a mammal an effective tumour- or metastasis-killing amount of a topoisomerase II poison except doxorubicin, and protecting non-tumourous tissue of the mammal against the toxic action of the topoisomerase II poison by administration of a bis-dioxypiperazine compound. In particular, the invention relates to a pharmaceutical kit for selectively killing tumour or metastatic cells within the central nervous system of a large mammal, in particular a human, said kit comprising: a) a dosage unit of a bis-dioxypiperazine and a pharmaceutically acceptable carrier, and b) a dosage unit of topoisomerase II  poisons except doxorubicin and a pharmaceutically acceptable carrier.