baber/WOPTO huggingface dataset:
Patent CA-2134958-C (CA)
Inventor: MEASURES RAYMOND MASSEY
IPC: G02B6/34
Filed: 1994-11-02
Granted: 2004-10-12
Abstract: The spectral and temporal form of radiant energy traveling down optical fibers is important in many fields, including communications and sensing. The spectral distribution and centre wavelength of short optical pulses is of particular importance. In the communication field the information carrying capacity of an optical fiber can be limited by the dispersion experienced by short pulses as they propagate along an optical fiber. Chirped fiber optic intracore Bragg gratings can be used to compensate for this dispersion. However, a grating with a different degree of chirp would be required for each particular communication system. We have invented a method and apparatus for controlling the detailed strain field imposed on a guided-wave Bragg grating. This precise control of the infra-grating strain distribution allows the grating to be tuned over a broad spectral range or chirped in a manner that permits it to compensate for a wide range of dispersion with or without a shift in the grating centre wavelength. In addition, precise control of the strain distribution along a grating can be used to manufacture a variety of spectral filters.
Patent CA-2139655-C (CA)
Inventor: MEKALANOS JOHN J
IPC: A61P37/04
Filed: 1993-07-01
Granted: 2008-05-13
Abstract: The invention features of nontoxigenic, genetically stable mutant strains of V  cholerae and a method of making which are useful as live, oral vaccines for inducing immunological protection against cholera. The mutant strains are genetically engineered mutants which lack DNA encoding a functional ctxA subunit which is responsible for many of the symptoms of cholera. The strains also lack any functional attRS1 sequences which are required for recombination and amplification of the CTX genetic element. These strains are safe because they can not recombine with the wild type attRS1-containing vehicles which include the ctxA-encoding DNA.
Patent CA-2141326-C (CA)
Title: Method for generating filtered noise signal and broadband signal having reduced dynamic range in mass spectrometry
Inventor: KELLEY PAUL E
IPC: G01N27/62
Filed: 1993-07-28
Granted: 2002-12-10
Abstract: A method for generating a filtered noise signal, which includes the steps of generating a broadband signal having opti-mized (reduced or minimized) dynamic range, and filtering the broadband signal in a notch filter (35B) to generate a broadband signal whose frequency-amplitude spectrum has one or more notches. In preferred embodiments, the filtered noise signal is a vol-tage signal suitable for application to an ion trap (16) during a mass spectrometry operation. The invention enables rapid genera-tion of different filtered noise signals by filtering a single, optimized broadband signal using a set of different notch filters, each having a simple, easily implementable design. Digital values indicative of the amplitude, frequency, and phase of each sinusoidal (or other periodic) component of an optimized broadband signal can be iteratively generated by a digital computer in accordance with the invention, and the digital values can then be processed to generate an analog version of the optimized broadband signal.
Patent CA-2145101-C (CA)
Inventor: FULLER KENNETH J
IPC: B60Q1/38
Filed: 1995-03-21
Granted: 2000-11-07
Abstract: A device is disclosed for providing drivers of road vehicles with additional audible indication that the turn signal system has been selected "on" and is still operating. The "flasher" device in said road vehicles is supplemented with an electronic tone-producing device connected at its accessible power terminals such that the electronic tone is audible to the driver, emitting a series of short duration tones, preceded and preferably separated by significant time delays, occurring from the initiation until the cancellation of the turn signal.
Patent CA-2149714-C (CA)
Title: Ophthalmologic apparatus for fundus imaging
Inventor: WEI JAY
IPC: A61B3/12
Filed: 1995-05-18
Granted: 2006-09-19
Abstract: Apparatus for illuminating the fundus of an eye with a scanned sample beam of radiation. An embodiment of the present invention is an optical system which includes three, separated radiation paths --a tilted illumination path, a decentered observation path, and an optical path-- which are combined by a beamsplitter into an ocular lens. In accordance with the present invention, the illumination path and the optical beam path are obliquely oriented with respect to the optical axis of the ocular lens.
Patent CA-2151413-C (CA)
Inventor: JOHNSON LARRY D
IPC: G01N27/30
Filed: 1995-06-09
Granted: 2004-08-24
Abstract: A method of making and an amperometric electrode are provided. An electrode carbon ink is applied to a polymer substrate to form a working electrode. The substrate carrying the working electrode is placed in a gas plasma cleaner, such as an oxygen or nitrogen plasma, to clean the working electrode. A high radio frequency signal excites the gas plasma for a short exposure time in a range between 10 seconds and 30 seconds. Then a reagent layer is deposited to the plasma treated working electrode.
Patent CA-2153774-C (CA)
Title: Systeme de detection a particules a collecteur reflechissant
Inventor: MORAN KEVIN E
IPC: H01L21/66
Filed: 1993-12-21
Granted: 2000-02-08
Abstract: Le système d'inspection de surface selon l'invention se compose d'une tête de balayage qui déplace par balayage le rayon laser sur la surface d'un article en suivant une certaine ligne de balayage. Un collecteur reçoit la lumière réfléchie par la surface de l'article le long de la ligne de balayage. Le collecteur est constitué d'un premier miroir positionné de manière à recevoir la lumière réfléchie par la surface de l'article, d'un deuxième miroir orienté par rapport audit premier miroir de manière à recevoir la lumière réfléchie par le premier miroir, les premier et deuxième miroirs étant configurés et orientés de manière à concentrer en un point la lumière réfléchie par une ligne. Un photodétecteur est positionné de manière à recevoir le point de lumière ainsi formé. Le procédé d'inspection de la surface d'un article consiste à déplacer par balayage un rayon laser le long d'une ligne de balayage prédéterminée sur la surface de l'article, à collecter de manière collective la lumière réfléchie par la surface de l'article le long d'une ligne de balayage à l'aide d'une pluralité de miroirs de manière à concentrer en un point la lumière réfléchie à partir d'une ligne.
Patent CA-2158199-C (CA)
Inventor: PAGE AUSTIN PHILLIP
IPC: E04G1/15
Filed: 1995-09-13
Granted: 1999-11-23
Abstract: A work plank for work platforms, access scaffolding walkways and the like structures has an elongate metal channel defining a top surface supported by downwardly and inwardly extending sidewalls.  The top surface preferably has a series of ports providing aggressive traction.  Hook arrangements can be provided at the ends of the channel for supporting the metal channel from access scaffolding.  The inwardly angled sidewalls improve strength, reduce the sensitivity of the plank to damage and assist in locating of the planks.  In a preferred embodiment, the hook arrangements also cooperate with drop-in ramps for providing transitions, when required.
Patent CA-2168493-C (CA)
Inventor: ANDERSON CHARLES B
IPC: F24F13/08
Filed: 1996-01-31
Granted: 2001-06-12
Abstract: An eave vent for discharge of gases from a dwelling, comprising a housing havinga lower horizontal peripheral mounting rim having fastener receiving openings therein, and defining an air flow outlet from the housing, a vertical wall normal to the rim and having a top portion, a hose connector extending from the vertical wall and defining a gas flow inlet to the housing, a diagonal wall having a juncture with and at an angle of about 45° to the vertical wall top portion, to the horizontal rim, and a pair of triangular opposite end walls joining the vertical wall, the horizontal rim and the diagonal wall to enclose the housing, and a rectangular closure flapper pivotally mounted on a horizontal axis at the juncture, depending over the air flow outlet, pivotal out against the diagonal wall with air flow out the outlet to lie flush against the diagonal wall, and pivotal against the vertical wall under reverse air flow.
Patent CA-2169638-C (CA)
Title: Intravascular medical device
Inventor: FEARNOT NEAL E
IPC: A61L29/00
Filed: 1994-08-29
Granted: 2009-10-06
Abstract: An intravascular medical device having a structure shaped and sized for introduction into the vascular system of a patient, the structure having biologically inert properties and a thrombolytic agent or an antithrombogenic agent. The thrombolytic agent advantageously dissolves or breaks up the formation of thrombus on the surface of the structure when placed in the vascular system of a patient. The antithrombogenic agent inhibits the formation of thrombus on the surface of the medical device. The structure also includes a biologically inert material that forms either at least part of the base material of the device or a coating material on the base material. The thrombolytic agent and/or antithrombogenic agent are homogeneously combined with the base and/or coating material.
Patent CA-2174163-C (CA)
Title: Ostomy coupling
Inventor: STEER PETER LESLIE
IPC: C09K23/42
Filed: 1996-04-15
Granted: 2007-06-26
Abstract: It would be desirable to have improved designs of ostomy couplings which embody a springy or resilient split ring as a locking ring.   In an ostomy coupling, first and second coupling members S0, 60 are held together by a springy flexible split locking ring 70. A plurality of tabs 71 symmetrically arranged on each limb of the locking ring 70, can be withdrawn generally radially outwardly by an upward pull on the locking ring to permit separation of the two coupling members. The ring 70 is generally circular in its unstressed condition.
Patent CA-2178141-C (CA)
Inventor: KAVTELADZE ZAZA A
IPC: A61F2/90
Filed: 1996-06-04
Granted: 2009-01-06
Abstract: An introducer and method of percutaneously deploying a self-expanding stent in a body vessel or duct. The stent introducer includes an outer elongated member tube having a passage extending longitudinally therein and operable in a first direction for deploying the self-expanding stent in a collapsed condition from the outer member passage. An inner elongated member is positioned in the outer member passage and is operable in a second direction for deploying the stent from the outer member passage. An interconnection mechanism is connected to the outer and inner members for operation thereof, whereby a stent in a collapsed condition is deployed from the outer member passage to an expanded condition. When deployed, the expanded portion of the stent remains fixedly positioned longitudinally in the body vessel or duct as the remaining portion is deployed from the outer member passage. The inner member operates a second operable distance and includes at least one protuberance for pushing the stent out of the outer member passage as the outer member is concomitantly withdrawn a first operable distance from the collapsed, self-expanding stent. 7'he first operable distance is the short length of the stent in an expanded condition, whereas the second operable distance is approximately the distance in the long and short lengths of the stent. The interconnection mechanism of the introducer further includes a transfer assembly coupled to the outer and inner members for controlling the travel distance and direction thereof.
Patent CA-2183170-C (CA)
Inventor: KULHAVY JOSEPH A
IPC: B66D5/04
Filed: 1995-01-09
Granted: 2006-03-28
Abstract: A pneumatically operated balancing hoist includes a housing forming a chamber therein and an inlet for communicating with the chamber. Slidably positioned in the housing is a piston. A rotating cable drum moves longitudinally within the housing with the piston. The rotating cable drum contains one or more longitudinal openings. When the rotating cable drum is moved longitudinally, rod mechanisms slidably and longitudinally engage the cable drum through one or more longitudinal openings, causing a flywheel located at one end o f the housing to rotate. When the rotation of the cable drum exceeds a predetermined speed, one or more brake shoes pivotably mounted to the flywheel will move outwardly to contact a braking surface located on the interior of the housing to stop the rotation of the cable drum. The balancing hoist of the present invention us typically part of a material handling system which includes a balancing hoist, a trolley connected to the balancing hoist, and an overhead for supporting the trolley such that the trolley can roll provide for movement of the balancing hoist throughout a facility.
Patent CA-2186796-C (CA)
Inventor: ISHIKAWA KATSUMI
IPC: H01L29/32
Filed: 1996-09-30
Granted: 2001-01-02
Abstract: The present invention relates to a power semiconductor device such as a diode and thyristor.  In a semiconductor device such as a diode and thyristor having at least one pn junction between a pair of main surfaces, a first main electrode is formed on the surface of one of the main surfaces and a second main electrode is formed on the surface of the other one of the main surfaces.  A semiconductor lattice defect is formed such that its lattice defect density increases gradually in the direction from the first main electrode to the second main electrode.  Since the distribution of carrier density in the conduction state can be flattened according to the invention, the reverse recovery charge can be reduced substantially without causing the ON-state voltage to increase.
Patent CA-2187004-C (CA)
Title: Information network system making use of television or radio broadcasting and broadcast receiving user terminal
Inventor: IINUMA KAZUMOTO
IPC: H04N5/445
Filed: 1996-10-02
Granted: 2000-12-12
Abstract: The invention provides an information network system which includes a broadcasting center, a broadcasting receiving user terminal, and a data base center connected to the user terminal by a network. The information network system offers bidirectional communication between the user terminal and the data base center and between the data base center and a broadcasting station for a user to enjoy bidirectional communication in regard to broadcasting. The broadcasting center includes a guiding instructions addition section for multiplexing guiding instructions regarding how to access the data base that includes a URL (Universal Resource Locator)for the data base center, into the broadcasting signal for the program to be transmitted.      The user terminal also includes a guiding instructions extraction section which extracts the guiding instructions including the URL from the broadcasting signal and a network communication section which accesses the data base and receives a response from the data base center.
Patent CA-2188289-C (CA)
Title: Tool holder for inserts, including a ribbed clamping surface
Inventor: BYSTROEM LENNART
IPC: B23B29/04
Filed: 1995-04-18
Granted: 2005-07-26
Abstract: A fastening arrangement for cutting inserts on insert holders for cutting machining of metals is arranged in such a way that it comprises parallel grooves (11) on the underside of the insert and ribs (4) on the insert holder (2), the ribs matching into the grooves. The cutting insert is screwed upon the holder, whereby a wedge effect is attained between the grooves and the ribs because the insert's underside does not abut against the plane part surfaces (7) between the ribs, and because the tops of the ribs are not in contact with the bottoms of the grooves.
Patent CA-2190732-C (CA)
Title: Method and apparatus for the collection, storage, and real time analysisof blood and other bodily fluids
Inventor: WHITSON PEGGY
IPC: A61J1/05
Filed: 1995-05-15
Granted: 2007-10-09
Abstract: An apparatus for collecting, separating, testing and storing small quantities of blood or other bodily fluid in situ. The apparatus includes a collection chamber which is abutted by a filter made of a thin sheet of fibrous material having an average pore size of less than 3 microns, The fibrous material has been treated with a mixture containing 1-40 % wt/vol carbohydrate and 0.1-15 % wt/vol non-specific protein. A preferred carbohydrate/protein mixture comprises about 10 % mannitol and about 6 % albumin. The blood or other fluid moves through the filter card by capillary action aided by an absorbent matrix with a high Klemm factor which abuts the filter card. The absorbent matrix and/or filter card can be treated with a wide spectrum of test reagents. The speed and efficiency of the separation process can be altered by: (a) changing the concentration of the carbohydrate/protein in the mixture; (b) applying pressure to one side of the filter, and/or (c) varying the relative density and pore size of the filter card and absorbent matrix.
Patent CA-2191700-C (CA)
Title: Procede et dispositif de compensation de phase pour systeme de commande de vehicules
Inventor: RUNDQWIST LARS
IPC: G05B11/36
Filed: 1995-02-14
Granted: 2001-07-24
Abstract: L'invention porte sur un procédé et un dispositif de compensation de phase dans le système de commande d'un véhicule à moteur dans lequel la dérivée temporelle du signal de sortie (y) du circuit (1) se trouvant dans le système de commande est limitée relativement à la dérivée temporelle du signal d'entrée (u) dans le circuit (1) lorsque cette dernière dépasse une valeur donnée. Un signal différentiel ( epsilon ) est formé entre le signal de sortie (y) et un signal (x) présent dans le circuit (1) et dont la dérivée temporelle n'est pas limitée par rapport à celle du signal d'entrée (u). Ledit signal différentiel ( epsilon ) est filtré à l'aide d'un filtre à stabilité asymptotique (3) pour former un signal ( delta ) qui est réintroduit et additionné au signal de sortie (u) du circuit (1) pour former le signal (x). On peut utiliser un limiteur de type classique pour former le signal de sortie (y) à partir du signal (x).
Patent CA-2191815-C (CA)
Inventor: ISHIBASHI KOKI
IPC: C07D413/14
Filed: 1996-12-02
Granted: 2005-05-10
Abstract: Compounds of formula (I): (see formula I)~ and the quaternary ammonium derivatives thereof, especially compounds in which L represents a group (see formula II) have tachykinin receptor antagonist activity and exhibit an activity against both the NK1 receptors and the NK2 receptors.
Patent CA-2193146-C (CA)
Inventor: ICHIMURA SHOJI
IPC: B01J23/889
Filed: 1996-12-17
Granted: 1999-11-02
Abstract: A fluid fuel reforming ceramic catalyst comprising a core 2 of a complex oxide ceramic of transition metals, an intermediate layer 3 of an alumina-based silicate ceramic covering the core 2 and an outer layer 4 of a ceramic containing noble metals prepared by forming the core by firing the complex oxide ceramic of transition metals, coating the intermediate layer of the alumina-based silicate ceramic over the core, and coating the outer layer of the ceramic containing noble metals over the intermediate layer increases the octane number of fluid fuels, enhances their combustion efficiency, and decreases the noxious substances in exhaust gases.
Patent CA-2193760-C (CA)
Inventor: BECKER ALLEN R
IPC: E01C11/22
Filed: 1996-12-23
Granted: 2001-12-04
Abstract: A polymeric trench drain for use in a trench drain system.   The trench drain includes an open-faced channel having a crushing rib.  The crushing rib prevents buckling  of  the  trench  drain  due  to  changes  in temperatures.   The trench drain also includes removable spacer blocks for use during installation, which prevent the   trench   drain   channel   from   deforming   during installation.    Rebar     clips  and  securement  clips  are provided  for easy  installation.   A unique profile  is provided on support ribs to assist in easy stacking of the trench drains prior to installation.
Patent CA-2198798-C (CA)
Title: System and method for pricing telecommunication transactions
Inventor: MUMICK INDERPAL SINGH
IPC: H04M15/00
Filed: 1997-02-28
Granted: 2000-05-23
Abstract: A system for rating and billing telecommunication transactions in real-time. In a preferred embodiment, a Real-Time Analysis Engine (RAE) updates customers' bills in real-time by applying customer specific data to Automatic Message Accounting (AMA) records. In a typical update, a customer initiates a call that is routed through a telephone network switch. The switch generates an AMA record for the call, and the record is passed to the RAE where the call is rated. The RAE then matches the rated call to the customer who initiated the call, locates that customer's billing data, and applies to the call any discounts to which the customer is entitled. After the call has been rated and discounted, or "priced", it may be added to the customer's other priced calls for the current billing period to generate a current bill for the customer.
Patent CA-2201096-C (CA)
Inventor: HAYAKAWA EIJI
IPC: C07D473/04
Filed: 1996-06-07
Granted: 2007-04-03
Abstract: The present invention relates to a solid dispersion and a solid dispersion dosage form which comprise a xanthine derivative represented by the following formula (I) or a pharmacologically allowable salt thereof and a polymer. (see formula I) (In the above formula, R1 and R2 are the same or different, and represent substituted or unsubstituted lower alkyl groups, and Q represents a hydrogen atom or a hydroxyl group.)
Patent CA-2205751-C (CA)
Inventor: ADAMSON MARK A
IPC: B62B3/14
Filed: 1997-05-21
Granted: 2000-02-22
Abstract: In a shopping cart having a handle with two generally vertical portions and a generally horizontal portion and having a main basket, a child seat comprises a primary panel, a secondary panel, and a tertiary panel, each panel being made from welded wires. Defining a back panel of the main basket and a front panel of the child seat and being mounted pivotally to the generally vertical portions of thehandle, the primary panel includes generally parallel wires spaced from one another by not more than about two inches. Defining a lower panel of the child seat, thesecondary panel has a substantially open portion and a weight-supporting portion, which includes similarly spaced wires. Below where the primary panel is mounted pivotally to the handle, the secondary panel is mounted pivotally to the primarypanel by several pivot wires extending from the secondary panel. Two pivot wiresdefine two lateral edges of the secondary panel. Three pivot wires divide the substantially open portion into four leg openings for two seated children. Defining a back panel of the child seat, the tertiary panel includes similarly spaced wires and is mounted pivotally to the primary panel, below where the secondary panel is mounted pivotally thereto. The tertiary panel is engaged with the secondary panel so as to limit pivoting of the secondary panel upwardly or downwardly, at the second of the cross wires of the primary panel, and so as to limit pivoting of the tertiary panel away from the primary panel. The tertiary panel is disengageable from the secondary panel.
Patent CA-2207333-C (CA)
Title: Use of nebivolol as an anti-atherogenic
Inventor: DE CHAFFOY DE COURCELLES DIDIE
IPC: A61K31/35
Filed: 1995-12-21
Granted: 2006-10-17
Abstract: This invention relates to the use of an .alpha.,.alpha.'-iminobis(methylene)bis[2-chromanmethanol] derivative for the manufacture of a medicament for the therapeutic or prophylactic treatment of humans suffering from or prone to degenerative diseases and conditions of the vascular and nervous system which are associated with oxidative stress.
Patent CA-2223204-C (CA)
Title: A dynamic distributed multicast routing protocol
Inventor: RAGHAVENDRA CAULIGI SRINIVASA
IPC: H04L12/18
Filed: 1997-11-27
Granted: 2001-07-10
Abstract: The distribution of multicast information in a communications network formed from a plurality of communications nodes, e.g., ATM switches, is enhanced by providing an efficient mechanism for routing a request to join a multicast connection to an originator of the multicast and an efficient mechanism for then connecting the requester to the multicast connection.