baber/WOPTO huggingface dataset:
Patent CA-2172058-C (CA)
Title: Method and apparatus for supporting at least two communication services in a communication system
Inventor: KREBS JAY
IPC: H04W84/08
Filed: 1994-08-18
Granted: 1998-07-07
Abstract: Apparatus and method for enabling a single com-munication system (100) to support  at least two com-munication services.  For example, one can support both cellular telephone services and trunked dispatch ser-vices by sharing some, but not all, of the system infra-structure.  Access control gateways (201) and base sta-tions (203) comprise common infrastructure elements, while two separate processors provide control for each service, these being a  communication  agent  proces-sor (104) to support telephone services, and a  dispatch call  processor (106) to support dispatch call services. These two independent processors each  include a  data base (303 and 307) that includes information concern-ing  communication  units (204-206) operating within the system. During a call set-up sequence,  the  access con-trol gateway (201) receives a call request from a  com-munication  unit via a base  station, and passes  the re-quest to the  appropriate  processor, which uses its cor-responding database to support the requested service.
Patent CA-2176624-C (CA)
Inventor: GRUBB LAWRENCE B
IPC: A63H19/30
Filed: 1996-05-15
Granted: 2000-06-20
Abstract: The present invention is directed to track locking systems for model railroads of the type in which separate sections of track are removably connected to form a desired closed pattern over which a model train will travel.  The track sections include electrically conductive rails for supporting and guiding the model train thereon, and for providing electrical energy from a source for driving the train.  Individual track bed sections connected to each other are joined at two laterally offset positions to enhance the stability of the sections removably locked together. The locking elements on the respective track sections joined together are oriented at substantially right angles to the direction of the rails to further enhance the stability and integrity of the joined track sections.  A secure connection between locked track sections assures a positive engagement between electrical connectors to provide a completed electrical circuit when the track sections are joined in the desired closed pattern.
Patent CA-2180649-C (CA)
Inventor: OPPONG DAVID
IPC: A01N37/02
Filed: 1995-01-24
Granted: 2002-01-15
Abstract: Compositions for controlling the growth of microorganisms in or on a product, material or medium comprising synergistically effective amounts of halogenated acetophenones, such as 2-bromo-4-hydroxyacetophenone, and at least one organic acid, its salt or ester are disclosed. Methods to control the growth of microorganisms and prevent spoilage caused by microorganisms with the use of the compositions of the present invention are also disclosed.
Patent CA-2180843-C (CA)
Title: Pyridine modulators of acetylcholine receptors
Inventor: MCDONALD IAN A
IPC: A61P25/02
Filed: 1995-10-16
Granted: 2003-07-15
Abstract: In accordance with the present invention, there is provided a class of pyridine compounds of formula (I) which are modulators of acetylcholine receptors. The compounds of the in-vention displace acetylcholine receptor ligands from their binding sites. In-vention compounds may act as ago-nists partial agonists, antagonists or allosteric modulators of acetylcholine receptors and are useful for a variety of therapeutic applications, such as the treatment of Alzheimer's disease and other disorders involving memory loss and or dementia (including AIDS dementia): disorders of attention and focus (such as attention deficit disorder); disorders of extrapyramidal motor function such as Parkinson's disease, Hunting-ton's disease, Gilles de la Tourette syndrome and tardive dyskinesia; mood and emotional disorders such as depression, panic, anxiety and psychosis; substance abuse including withdrawal syndromes and substitution therapy; neuroendocrine disorders and dysregulation of food intake, including bulimia and anorexia; disorders of nociception and control of pain: autonomic disorders including dysfunction of gastrointestinal motility and function such as inflammatory bowel disease, irritable bowel syndrome, diarrhea, constipation, gastric acid se-cretion and ulcers; pheochromocytoma; cardiovascular dysfunction including hypertension and cardia arrhythmias, comedication in surgical procedures, and the like.
Patent CA-2181605-C (CA)
Title: Formulation liquide de 1,2-benzisothiazolin-3-one
Inventor: HINKLE JEFFERY S
IPC: C11D7/50
Filed: 1996-07-19
Granted: 1999-11-30
Abstract: Des formulations liquides de 1, 2-benzisothiazolin-3-one, et des méthodes de fabrication de ces formulations sont divulguées. Selon l'invention, les formulations contiennent environ 1 à 25 pour cent en poids de 1,2-benzisothiazolin-3-one, environ 3 à 7 pour cent en poids d'hydroxyde de sodium, environ 3 à 63 pour cent en poids d'eau et environ 20 à 65 pour cent en poids d'un ou de plusieurs polyglycols triols ayant la formule :   où nx, ny et nz sont individuellement choisis dans le groupe comprenant 2 et 3 et, lorsque nx, ny et nz sont chacune égale à 2, X + Y + Z a une valeur inférieure ou égale à environ 13,2 et, lorsque nx, ny et nz sont chacune égale à 3, X + Y + Z a une valeur inférieure ou égale à environ 4,45.
Patent CA-2185773-C (CA)
Title: Joint assembly
Inventor: URBACH BRIAN A
IPC: F16C11/06
Filed: 1996-09-17
Granted: 1999-11-30
Abstract: An improved joint assembly includes a housing (12) and a movable member (24) having a ball end portion (26) which is disposed in the housing.  An annular seal (24) is disposed between an inner side surface (16) of the housing (12) and the ball end portion (26) of the movable member (24).  The annular seal (42) has bilateral symmetry about a central plane (46) extending perpendicular to a central axis (38) of the annular seal to enable the annular seal to be positioned in the housing (12) with either one of two sides (50 or 52) of the annular seal (42) facing the ball end portion (26) of the movable member (24).  The seal (42) includes an annular metal reinforcing ring (72) and an annular body (74) of polymeric material which encloses the metal reinforcing ring.  The annular body (74) of polymeric material has a cylindrical outer side surface (62) which is disposed in sealing engagement with a cylindrical inner side surface (16) of the housing (12) and an inner side (52) disposed in sealing engagement with an outer side surface (28) of the ball end portion (26) of the movable member (24).
Patent CA-2186939-C (CA)
Inventor: CLAESSENS PIERRE
IPC: C25C7/00
Filed: 1996-10-01
Granted: 1999-03-16
Abstract: The present invention is concerned with a method for electrorefining silver in a Moebius cell whereby the anode is completely dissolved and the gold mud is removed without handling of any partially dissolved anodes. The cell is conventional except that the anodes are placed in a basket made of a thermoplastic material and surrounded by a cloth, the electrical contact between the anode and the power source takes place outside the electrolyte. The bottom of the basket is provided with apertures allowing the gold mud produced to fall into the cloth until the anode is completely dissolved.
Patent CA-2190943-C (CA)
Inventor: MINOIA PAOLO
IPC: A61K38/095
Filed: 1995-05-22
Granted: 2010-06-22
Abstract: The combined use of opiate antagonists and of calcium salts for the preparation of medicaments for the treatment of endorphin-mediated pathologies is described.
Patent CA-2190980-C (CA)
Inventor: WOOD MARK THORNTON
IPC: A63F9/06
Filed: 1995-05-31
Granted: 2001-04-17
Abstract: A game or puzzle including a plurality of polyomino pieces which have the ob verse sides and reverse sides marked with different markings, there being at least three markings in total on the obverse and re verse sides of the pieces. The pieces may be assembled u sing both sides into different arrays of eight by eight squares defining checkerb oard patterns for use in playing the game of chess or ch eckers. The pieces may also be assembled into a cube comprising four by four by four  squares.
Patent CA-2193098-C (CA)
Title: Preparation of semiconductor substrates
Inventor: SPURDENS PAUL CHARLES
IPC: H01L21/20
Filed: 1995-06-29
Granted: 2001-02-20
Abstract: An indium phosphide semiconductor substrate (10) is prepared for subsequent growth of epitaxial layers (12 to 16) to form a semiconductor device (5). In the preparation, the substrate (10) is first annealed to promote any tendency for surface accumulation of impurity atoms by diffusion from the substrate and to promote impurity atom removal from the surface of the substrate. The substrate (10) is then surface etched to remove further impurities and to provide a clean, flat surface for subsequent epitaxial layer growth. The final stage of preparation involves growing a semi-insulating buffer layer (11) on the substrate to isolate the device epitaxial layers (12 to 16) from the substrate.
Patent CA-2195140-C (CA)
Title: Method of announcing an internet call
Inventor: FOLADARE MARK JEFFREY
IPC: H04W84/02
Filed: 1997-01-15
Granted: 2000-05-02
Abstract: A called party is alerted to the presence of a voice call on the Internet (110) by a page that is automatically transmitted to the called party's pager (120) upon initiation of the call by a calling party from his terminal (101) running Internet voice communications software and equipped with a microphone (102) and speaker (103). The page is transmitted in response to a message sent by a service provider (115) on the Internet, which receives from the calling party's terminal on the Internet, information for identifying the called party's pager. The called party, upon receiving the page, connects to the called party on the Internet through his home terminal (105) that is running that same voice communications software and is also equipped with a microphone (106) and speaker (107), or through any such similarly equipped portable or fixed terminal (125) at any location from which the Internet can be accessed. Alternatively, the called party can answer the call on the Internet with a standard station set (131 ) by calling an Internet-savvy platform (130), which converts the packetized voice signal of the calling party into an analog signal and the analog voice signal of the called party into packets for transmission on the Internet.
Patent CA-2196099-C (CA)
Title: Produce washer
Inventor: ST MARTIN MARTY
IPC: A23N12/02
Filed: 1994-07-27
Granted: 2002-04-23
Abstract: Produce, whether vegetable and/or fruit, is supported upon a screen basket (18) suspended within a closed cabinet (12). Each of a plurality of nozzles (334) disposed about the basket (18) emits a filled cone (338) of washing fluid (333) to scour the produce and to dislodge by agitation and flotation debris therefrom. After filtering of the washing fluid (333) through a scree n (30) in the cabinet (12), the washing fluid is recycled by a pump (84) pumpi ng the washing fluid (333) from a collection trough (80) to the nozzles (334). Preferably, the washing fluid (333) is slightly acidic.
Patent CA-2197900-C (CA)
Title: Racemization of optically active amines
Inventor: DITRICH KLAUS
IPC: C07C209/68
Filed: 1997-02-18
Granted: 2005-06-14
Abstract: A process for the racemization of optically active amines of the formula (I), where Ar is an unsubstituted or substituted aryl and R is alkyl, in which a) (I) is reacted with the ketone (II) in which Ar and R have the same meanings as for (I), to give the condensation product (III), (see formulas I, II, III) b) (III) is racemized by treatment with base, (see formula III) c) the arylalkylamine (I) is liberated as racemate from racemic (III) by reaction with optically active (I).   (see formula I) (see formula III)
Patent CA-2202054-C (CA)
Inventor: PLUMLEY JULIAN ASHTON
IPC: A61F13/472
Filed: 1995-10-13
Granted: 2001-07-24
Abstract: The present invention relates to a high speed mechanical straining process to provide extensibility (56) to laminates (1) for disposable absorbent articles such as sanitary napkins, panty liners, and incontinence pads having side wrapping elements (52) for folding around the side edges of the wearer's undergarment. The components are designed to automatically wrap the side edges of the wearer's undergarment when the indergarments are pulled up by having zones (56) of extensibility. Importantly, the zones (56) are created by a high speed straining process of the laminate which comprises two layers (2, 3) at least one of which has apertures. The layers at least are joined in the extensibility zones (56) to each other by a soldering step.
Patent CA-2205843-C (CA)
Title: Dispensing cap with measuring chamber and sifter
Inventor: ROBBINS EDWARD S III
IPC: B65D83/06
Filed: 1995-11-29
Granted: 2002-01-08
Abstract: A measuring/dispensing cap (10) adapted for attachment to an open, upper end  of a container includes a lid (12) and a peripheral skirt (14) extending downwardly from the lid. An integrally fixed sifter panel (24) separates the  peripheral skirt into upper and lower sections, the upper section including a measuring chamber and the lower section including screw threads (20) for attaching the cap to the open upper end of the container. The sifter panel i s formed to provide a flow opening on one side of a horizontal centerline extending across the cap, the flow opening defined in part by a first edge (28) extending parallel to and spaced from the horizontal centerline. A rotatable weir dam panel (34) overlies the sifter panel, and the weir dam panel has a second weir edge (36) which may be aligned with the first edge t o enable substantially free flow of contents through the cap and into the measuring chamber.
Patent CA-2207965-C (CA)
Inventor: WATANABE NOZOMU
IPC: H04W24/08
Filed: 1997-06-16
Granted: 2001-05-08
Abstract: In a radio loop-back test system for a radio apparatus in which a transmitter (15) transmits a first radio signal in response to a transmission signal and which a receiver (16) receives a second radio signal to produce a reception signal, a comparing portion (22) compares the reception signal with the transmission signal to produce a comparison result signal.  An interference detection portion (23) detects whether or not the reception signal has an interference component unrelated with the first radio signal.  The interference detection portion produces an interference detection signal when the reception signal has the interference component.  The comparison result signal is controlled by an output control portion (24) in accordance with presence and absence of the interference detection signal.
Patent CA-2208461-C (CA)
Title: A multi-function filament-heater power supply for an electronic ballast for long-life, dimmable lamps
Inventor: STEIGERWALD ROBERT LOUIS
IPC: H05B41/392
Filed: 1996-10-28
Granted: 2004-10-12
Abstract: A filament-heater power supply includes a combination forward and flyback power converter for supplying electronically variable, isolated voltages to dimmable discharge lamp filaments while supplying a fix ed do output voltage to a ballast control circuit. Hence, only a single ballast power supply is needed. The control circuit controls the leve l of filament voltage to operate the lamp filaments at an optimum temperature, even during dimming operation, thereby substantially extending lamp life. The filament-heater power supply provides a high degree of isolation among filament voltages while regulating and tracking th e voltage across each filament. The filament-heater power supply can preheat the filaments to aid lamp starting, thereby extending the useful life of the lamp, and is also structured to sense when a lamp is not present in a fixture so that high voltage starting pulses are no t applied to the terminals of an empty fixture.
Patent CA-2209085-C (CA)
Inventor: ARVIDSON BO R
IPC: B03C1/12
Filed: 1995-12-29
Granted: 2006-12-12
Abstract: A magnetic drum separator (10) for separating components having different magnetic properties out of an aggregate material employs a drum (12) rotatably driven on a longitudinal axis ('R"). The drum (12) has a cylindrical shell sidewall (26) to have an open interior (32) wherein a magnetic array (60) is disposed. The magnetic array (60) is formed by a plurality of longitudinally extending and circumferentially spaced ferromagnetic bars (92). A first magnet (100) is disposed between each pair of circumjacent bars (92), and circumjacent first magnets (100) have similar magnetic poles facing the bar located therebetween. Second magnets (120) extend longitudinally and a second magnet (120) is located radially inwardly of each of a majority of the bars (92).  Circumjacent second magnets (120) have oppositely oriented polarities, all in the radial direction, and each second magnet (120) has a similar pole facing the respective bar as those of the first magnets (100). The array (60) is supported by an arcuate support plate (72) and a pair of brackets (64, 70) secured to a rigid shaft (36) about which the drum (12) rotates. The array (60) has an arcuate active surface (62) in closely-spaced relation concentric to the drum sidewall (26), and this arcuate surface (62) preferably extends between 45° and 120° of arc.
Patent CA-2211389-C (CA)
Title: Novel pharmaceutical combination
Inventor: KRISTOFFERSON ANN HARRIET MARG
IPC: A61K45/06
Filed: 1996-02-02
Granted: 2007-11-20
Abstract: The invention relates to pharmaceutical compositions for topical administration comprising a topically acceptable antiviral substance and an antiiflammatory glucocorticoid in a pharmaceutically acceptable carrier. The pharmaceutical composition can be used in the prophylactic and curative treatment of herpesvirus infections in mammals including man. The invention also relates to the use of a combination of a topically acceptable antiviral substance and an antiinflammatory glucocorticoid for the manufacture of a midicament for said prophylactic and curative treatment.
Patent CA-2212145-C (CA)
Inventor: FISHBACK THOMAS L
IPC: C08G18/28
Filed: 1994-09-21
Granted: 2002-01-22
Abstract: Disclosed is a blowing agent containing catalyst precursor consisting essentially of: a)   a blowing agent comprising formic acid, or a mixture of formic acid and water; b)   a  tertiary  amine  blowing  catalyst  fully blocked with an organic carboxylic acid; and c)   a tertiary amine gel catalyst fully blocked by an organic carboxylic acid; wherein  the  total  number  of carboxylic  acid  group equivalent  including the carboxylic acid groups  blocking  in the   form, is greater than 1.0 per amino group. This precursor  can  be  used  for  the preparation  of  a  polyol composition having good flow characteristics which in turn makes a rigid polyurethane having good dimensional stability at low densities.
Patent CA-2212228-C (CA)
Title: Method and apparatus for forming drink-thru cup lids
Inventor: PATEL JACK
IPC: B65D43/02
Filed: 1997-07-31
Granted: 2002-07-16
Abstract: An apparatus and method for forming a lid having an annular mounting portion, an annular trough region positioned radially inward of the annular mounting portion, an annular side wall extending upwardly from an inner periphery of the annular trough region to an annular ridge adjacent said annular side wall, and a crown region is set forth. The apparatus includes a forming die having an upper surface of a configuration conforming to the configuration of the lid, a forming ring for aiding in the forming of the lid, a positioning device for positioning the thermoformable sheet material adjacent the upper surface of the forming die between the forming die and the forming ring and a drive mechanism for lowering the forming ring into contact with the sheet material. The method includes contacting that portion of the sheet material which forms a lowermost region of the lid with the forming ring so as to carry the material down into the lowermost region of the forming die.
Patent CA-2212321-C (CA)
Inventor: AKAMATSU OSAMU
IPC: B60T15/18
Filed: 1997-08-01
Granted: 2000-04-11
Abstract: A three-position solenoid valve that can be used as a normally open type that can prevent reduction of responsivity due to the working pressure acting on a guide cylinder.  When the solenoid is demagnetized, it is made to adopt a connecting position and since the working pressure does not act on the guide cylinder that guides the sliding of the moving iron core of the solenoid in this connecting position, it is possible to prevent deformation of the guide cylinder by the working pressure, which would reduce the responsivity of the solenoid valve and reduce the longevity of the solenoid by having the working pressure acting on it for long periods.  Thus, it is possible to provide a valve that is suitable for use as a normally open three-position solenoid valve.
Patent CA-2218127-C (CA)
Inventor: KARELLAS ANDREW
IPC: G21K4/00
Filed: 1996-05-13
Granted: 2008-03-18
Abstract: A system for spectroscopic imaging of bodily tissue in which a scintillation screen (20) and a charged coupled device (24)(CCD) are used to accurately image selected tissue. An x-ray source (12) generates X-rays which pass through a region of a subject's body, forming an X-ray image which reaches the scintillation screen (20). The scintillation screen (20) reradiates a spatial intensity pattern corresponding to the image, the pattern being detected by a CCD sensor (24). The image is digitized by the sensor (24) and processed by a controller (30) before being stored as an electronic image. Each image is directed onto an associated respective CCD or amorphous silicon detector to generate individual electronic representations of the separate images.
Patent CA-2219699-C (CA)
Title: Low pressure drop heat exchanger
Inventor: HUENNIGER EDWARD A
IPC: F28B1/02
Filed: 1997-10-30
Granted: 2002-08-13
Abstract: A two pass heat exchanger is provided. The first pass includes a plurality of tubes located in liquid refrigerant, when employed as an evaporator, whereby the liquid refrigerant draws heat from the water flowing through the tubes causing the water to be cooled and the liquid refrigerant to evaporate. The second pass is a single pipe which need not be located in the liquid refrigerant. The two pass heat exchanger can also be used as a condenser.
Patent CA-2222452-C (CA)
Title: Treatment of aqueous systems using a chemically modified tannin
Inventor: DEBOO STEVEN M
IPC: C08H99/00
Filed: 1996-06-20
Granted: 2008-09-02
Abstract: There is provided a composition comprising tannin containing hydroxyl groups which has been (a) chemically modified by reaction of at least one of said hydroxyl groups with at least one member selected from the group consisting of an esterification agent (e.g.  acetic anhydride), etherification agent (e.g. dichloromethane or quaternary organic amine such as N-(3-chloro-2-hydroxypropyl) trimethyl ammonium chloride) to form the corresponding ester, or ether, through said hydroxyl group, and (b) derivatized. The chemically modified tannin is derivatized by reaction with aldehyde (e.g. formaldehyde), or aldehyde and at least one member selected from the group consisting of ammonia and organic amine containing at least one primary or secondary nitrogen (e.g. cyclohexyl amine); said derivatized tannin being water soluble or dispersible at a pH below 7 and water insoluble at a pH above 7. The above modified tannins are useful for the coagulation and/or detackification of solid particles suspended in an aqueous system, such as paint particles suspended in the waste water of a paint spray booth operation. Such tannins also have utility for demulsifying oil-in-water emulsions.