baber/WOPTO huggingface dataset:
Patent CA-2304163-A1 (CA)
Title: Dynamic heuristic method for detecting computer viruses
Inventor: NACHENBERG CAREY S
IPC: G06F1/00
Filed: 1998-08-25
Abstract: A dynamic heuristic method for detecting computer viruses comprising three phases: a decryption phase, an exploration phase, and an evaluation phase. A purpose of the decryption phase is to emulate a sufficient number of instructions to allow an encrypted virus to decrypt its viral body. A purpose of the exploration phase is to emulate at least once all sections of code within a region deemed likely to contain any virus present in the target program. A purpose of the evaluation phase is to analyze any suspicious behavior observed during the decryption and exploration phases to determine whether the target appears to be infected.
Patent CA-2304474-A1 (CA)
Title: Metallic glass alloys for mechanically resonant marker surveillance systems
Inventor: MARTIS RONALD
IPC: C22C45/00
Filed: 1998-09-25
Abstract: A glassy metal alloy consists essentially of the formula Fe a Co b Ni c M d B  e Si f C g, where "M" is at least one member selected from the group consisting of molybdenum, chromium and manganese, "a-g" are in atom percent, "a" ranges from about 19 to about 29, "b" ranges from about 16 to about 42, "c" ranges from about 20 to about 40, "d" ranges from about 0 to about 3, "e" ranges from about 10 to about 20, "f" ranges from about 0 to about 9 and "g" ranges from about 0 to about 3.  The alloy can be cast by rapid solidification into ribbon, annealed to enhance magnetic properties, and formed into a marker that is especially suited for use in magneto-mechanically actuated article surveillance systems. Advantageously, the marker is characterized by substantially linear magnetization response to an applied magnetic field in the frequency regime wherein harmonic marker systems operate magnetically. Voltage amplitudes detected for the marker are high, and interference between surveillance systems based on mechanical resonance and harmonic re-radiance is virtually eliminated.
Patent CA-2306695-A1 (CA)
Title: System for steering towed implement in response to, or independently of, steering of towing vehicle
Inventor: BESTMANN HERRMANN
IPC: B62D13/06
Filed: 2000-04-26
Abstract: A steering system for a towed implement includes a first double-acting hydraulic actuator that is coupled between the towing vehicle and the towed implement such as that turning the towing vehicle relative to the towed implement results in fluid being forced out of the first actuator and into a second double-acting hydraulic actuator that is coupled for effecting steering of a steerable wheel of the towed implement. The piston rod of the second actuator is coupled to the piston rod of a third double-acting hydraulic actuator forming part of a control for steering the towed implement wheel independently of the turning action of the towing vehicle in order to straighten the steered wheel so that the implement may be moved backwards with out any problems. In one embodiment, the towed implement frame is made so as to be extensible and retractable in the fore-and-aft direction. The control when used with this implement aids in orienting the steered wheel, which is mounted to the movable section of the implement frame, so as to permit the movable section to move backwards either when the frame of the implement is being extended or when the entire implement frame is being moved backwards.
Patent CA-2307433-A1 (CA)
Inventor: CARGILL EDWARD JAMES
IPC: F16J15/32
Filed: 2000-05-02
Abstract: An improvement in a seal assembly of the type including a seal element retained by a seal housing, where one of the seal element and the seal housing is constructed from a compressible material, where the seal element includes a seal engagement surface and where the seal housing includes a housing engagement surface. The improvement includes at least one of the seal engagement surface and the housing engagement surface defining a depression for providing an isolated gap between the seal engagement surface and the housing engagement surface.
Patent CA-2309309-A1 (CA)
Inventor: HEPBURN JEFFREY
IPC: F01N13/04
Filed: 2000-05-24
Abstract: An exhaust gas purification system for an internal combustion engine including two integrated NO x trap-particulate filters arranged in parallel in the exhaust path. Each of the filters is used in the alternative to reduce NO x. Thus, one filter can be regenerated while the other is in use. A valve is used to direct the flow of exhaust gas to the respective exhaust filters. A nozzle for introducing reducing agents into each of the exhaust filters is provided in the exhaust path of each of the respective filters. An engine control module is also provided for monitoring the levels of absorbed NO x and particulate matter in each of the filters and generating control signals for the nozzles and the valve as a function of the absorbed NO x and particulate matter in each filter. In addition, an oxidation catalyst is located upstream of each of the respective exhaust filters.
Patent CA-2310913-A1 (CA)
Inventor: KING BOBBY J
IPC: C04B24/16
Filed: 2000-06-07
Abstract: Methods of cementing subterranean zones penetrated by a well bores are provided. In accordance with the methods, a cement composition is prepared comprised of a hydraulic cement, sufficient water to form a slurry and an effective amount of a liquid fluid loss control additive comprised of an emulsion having a copolymer of N,N-dimethylacrylamide and 2-acrylamido-2-methylpropane sulfonic acid or a salt thereof contained therein. The cement composition is placed in a subterranean zone and then allowed to set into a hard impermeable mass therein.
Patent CA-2311068-A1 (CA)
Inventor: BROWN STEPHEN JOHN
IPC: C08F210/18
Filed: 2000-06-08
Abstract: A solution polymerization process for the preparation of elastomeric ethylene propylene (diene) elastomers is characterized by the use of a) an unbridged catalyst having a cyclopentadienyl ligand and a monosubstituted nitrogen ligand; and b) a boron activator. High molecular weight elastomers may be inexpensively prepared by the process of this invention. The elastomers are suitable for the manufacture of rubber sheets or membranes and automotive parts such as seals, belts, hoses and tire sidewalls.
Patent CA-2316168-A1 (CA)
Inventor: DU YONGGANG
IPC: H04B7/26
Filed: 1999-10-11
Abstract: The invention relates to a wireless network with a plurality of network nodes, each of which consists of at least one electrical apparatus and at least one radio device which are arranged to exchange data via a wireless medium. A network node includes a clock supply for supplying all electrical apparatus and the radio device with its clock. A network node which is designated as a main network node transmits, via its radio device, a synchronization pattern which is dependent on the clock of its clock supply. All other network nodes, referred to as secondary network nodes, are assigned to different, hierarchically ordered distance classes in dependence on their distance from the main network node which is assigned to the highest distance class. All secondary network nodes of a distance class transmit, via their respective radio device, a synchronization pattern which is dependent on the clock of their respective clock supply and characterizes the distance class. A secondary network node synchronizes its clock supply by means of at least one received synchronization pattern of a hierarchically higher distance class.
Patent CA-2317334-A1 (CA)
Inventor: MATTHEWS MARK C
IPC: D06F75/40
Filed: 2000-09-01
Abstract: An iron includes a soleplate and a water tank connected to the soleplate for supplying  steam to the soleplate. The water tank includes a cavity for holding water, a fill opening for filling the cavity with water, and a guide arrangement associated with the fill opening. A handle is connected with the water tank. A rear cover is connected to a rear end of the water tank, the rear cover having a rear plate in covering relation to a rear portion of the iron, and the rear plate including an arrangement for stabilizing the iron in an upright position on a soft surface. The arrangement includes a recess in an outer surface of the rear plate, and at least one non-slip foot extending from the outer surface of the rear plate. A fill door is slidably mounted on the guide arrangement between a closed position in covering relation to the fill opening and an open position to permit filling of the cavity with water through the fill opening.
Patent CA-2317587-A1 (CA)
Title: Solid iodophor preparations and process for producing the same
Inventor: SASAKI YASOJI
IPC: A61K31/79
Filed: 1998-12-28
Abstract: Solid iodophor preparations containing: (a) dextrin; (b) an iodide; (c) an oxidizing agent; and (d) an acid. These preparations make it possible to efficiently provide one-part type solid iodophor preparations which remain stable without liberating iodine during storage but can be quickly dissolved at using.
Patent CA-2319555-A1 (CA)
Inventor: PETRY STEFAN
IPC: C07C311/46
Filed: 1999-02-04
Abstract: The invention relates to compounds of formula (I) in which the symbols have the meanings given in the description. The compounds have excellent antiarrhythmic properties and comprise a cardioprotective component. The inventive compounds can preventively inhibit or strongly reduce the pathophysiological processes when ischaemic induced damages arise, especially during the onset of ischaemic induced cardiac arrhythmias. In addition, the inventive compounds have a strong inhibiting effect on the proliferation of cells.
Patent CA-2319950-A1 (CA)
Title: Directionally controllable fishing lure
Inventor: JOHNSTON JON C
IPC: A01K85/16
Filed: 2000-09-20
Abstract: A directionally controllable fishing lure enables an angler to cast the lure to a desired area, with the lure traveling an arcuate path to the left or right upon retrieval. The direction of turn is determined by the angler, depending upon the rigging of the lure. The present lure has an elongate body with angularly truncated faces at each end thereof . The two faces are angled in opposite directions to one another, and the lure body is ballasted so that the two faces are always angled to one side when the lure is floating in the water, rather than facing upwardly or downwardly. The angularly truncated ends produce an asymmetrical hydrodynamic reaction as the lure is drawn through the water, causing the lure to turn in one direction or the other. If the angler attaches the fishing leader or line to the first end, the lure will travel in an arcuate path to the angler's right (or to the left, when considered in the direction of travel of the lure). Attaching the line or leader to the opposite end, results in a turn in the opposite direction. Thus, the present lure may be made to work around snags, weeds, and other obstructions, and/or may be made to work upstream in a current. The arcuate retrieve path is also much more realistic than the straight retrieval path of other lures, thus attracting fish more readily due to the realistic travel path of the present lure.
Patent CA-2320183-A1 (CA)
Title: Method for processing personal data
Inventor: DOTTER JAMES E
IPC: A61B5/332
Filed: 1998-02-11
Abstract: A system for recording designated physical activity during the period of activity by means of a digital timepiece (10) carried by an athlete or user for subsequent playback after the activity via an audible transmission link (12, 14, 18, 20) to a digital computer (16) for processing, analysis and display (22).
Patent CA-2323543-A1 (CA)
Title: Method and system for off-loading data traffic in a telephone network
Inventor: GALLER SIMON
IPC: H04M3/36
Filed: 2000-01-21
Abstract: A method and system for off-loading data traffic in a telephone network having an ingress switch switchably connectable to a source of data traffic and a source of voice traffic and having a tandem switch downstream of the ingress switch, so as to re-route the data traffic away from a Public Switched Telephone Network (PSTN) thereby reducing congestion thereon. A digital cross connect based device connected between the ingress and tandem switches allows discrimination between the data traffic and the voice traffic downstream of the ingress switch prior to reaching the tandem switch, and diverts the data traffic to a data network.
Patent CA-2324089-A1 (CA)
Title: High fiber count, compact, loose tube optical fiber cable employing ribbon units and flexible buffer tubes
Inventor: VAUGHN ROGER
IPC: G02B6/44
Filed: 2000-10-20
Abstract: An optical fiber cable has a longitudinally extending central strength member and at least one substantially fluid impervious, flexible plastic buffer tube S-Z wound around said central member in an alternating hand helix, said alternating hand helix having a lay length of from about 400 mm to about 600 mm. Superimposed ribbon units in stack are loosely received in the tube, each ribbon unit comprising optical fibers held together in side-to-side relation in a non--conductive material. The stack of superimposed ribbon units has an axial length from about 0.1% greater than to about 0.2% less than the axial length of the tube and has a width transverse to the stack axis and a thickness transverse to the stack width. The ribbon units are helically twisted around the axis of the stack with a pitch of from about 250 mm to about 1000 mm in the tube. The ratio of the pitch of the superimposed ribbon units to the lay length of the tube is from about 0.5 to about 1.2. There is a clearance C between the superimposed ribbon units and the inner diameter of the tube wall between about 1 mm and about 2 mm with the relation; C = (T I2 - W R2)1/2 -H R where T I is the inner diameter of said tube, W R is the width of said stack and H R is a thickness of said stack. A sheath of plastic material encircles the central strength member and the tube wound around the central member. The ratio of the ribbon pitch to the tube lay length, the clearance and the axial length of the stack are selected to provide optical signal attenuation in the optical fibers of less than 0.30 average dB/km at a 1550 nm wavelength.
Patent CA-2327911-A1 (CA)
Title: Obscuring functions in computer software
Inventor: JOHNSON HAROLD J
IPC: G06F21/14
Filed: 2000-12-08
Abstract: In traditional black-box cryptography, the attacker knows the al-gorithm, but has no visibility into its execution.      For white-box cryptography, we would have to hide the key when the attacker has total visibility into its software implementation and execution. (Many believe this impossible: we think there is progress but it needs more work.) This would open up a host of intriguing applications and would be likely to simplify many complex protocols.      We suggest methods to make finding an encryption key harder (so far as we have yet discovered) than expected. Our purpose is similar to that of Auc-smith and Graunke's split encryption/decryption[1], but by somewhat different methods.      We focus on symmetric block ciphers implemented by substitution boxes and linear transformations, with DES[2, 4] providing an example. We address efficiency only superficially, leaving full coverage for more work and a later paper.      We have applied for patents on the methods we describe.
Patent CA-2328287-A1 (CA)
Inventor: KASUKAWA AKIHIKO
IPC: H01S5/22
Filed: 2000-02-16
Abstract: A semiconductor laser (200) comprises a semiconductor substrate (100), a pair of cladding layers (110, 150) formed on the substrate, a pair of undoped SCH  layers (120, 140) disposed between the cladding layers (110, 150), and an active quantum well layer (130) disposed between the undoped SCH layers (120, 140). The waveguide loss of light output in leaky mode is smaller than the mode gain of the semiconductor laser because the existence of the SCH layers (120, 140) and the adequate film thickness of the cladding layers (110, 150).  The laser provides low threshold current and high emission efficiency.
Patent CA-2329109-A1 (CA)
Inventor: GORCEA DAN V
IPC: H04L27/00
Filed: 2000-12-20
Abstract: A directional coupler for a modem has a high common mode noise rejection characteristic with low transmit signal leakage, and reduced distortion of components mixed with a received signal. A primary filter network is connected to a communications circuit. The primary filter network has an output connected to an input of an amplifier. A feedback network is connected between the input and output of the amplifier. The primary filter network, the amplifier and the feedback network are arranged to provide a virtual ground at the input of the amplifier, and a filter characteristic which attenuates frequencies in the transmit signal band. The advantage is reduced component count while providing excellent transmit signal rejection and reducing received signal distortion.
Patent CA-2330433-A1 (CA)
Inventor: ROUSTAEI ALEX
IPC: H04N5/235
Filed: 2001-01-09
Abstract: A method and a system for operating an imager during image capture of an object under a wide range of ambient light intensities so as to provide a controlled output image signal for image recognition. The imager includes an imaging circuit having an imaging array on a die and light detectors also located on the die adjacent to the imaging array for sensing the intensity of the illumination on the object and generating signals representing the intensity of the illumination sensed at each detector. These signals are used to adjust the exposure time of the imaging array, the light source that illuminates the object and/or the gain of the imager output amplifier.  The signals may also be used to determine alignment of the imaging array with respect to the object, which may be a two-dimensional bar code.
Patent CA-2330730-A1 (CA)
Inventor: BORYSYUK MYKOLA
IPC: C12N15/82
Filed: 1999-06-15
Abstract: Products and methods for amplifying target nucleic acids using cells derived  from plants are disclosed. Also disclosed are methods for improving transcription of target nucleic acids beyond expectations based solely on target copy number, and the recovery of such expression products. The produc ts include nucleic acids containing a plant-active Amplification Promoting Sequence (APS) and the methods exploit these products in amplifying target nucleic acids. The methods of the invention minimize operator intervention a nd exploit solar energy and the minimal nutrient needs of photoautotrophic organisms to provide inexpensive and indefinitely sustainable methods for producing a variety of amplified target nucleic acids and encoded products such as polypeptides.
Patent CA-2332826-A1 (CA)
Inventor: CLERC DARYL
IPC: C01B21/082
Filed: 1999-05-21
Abstract: A transition metal based ceramic material is disclosed and has the general formula Li.alpha.M1-.beta.T.beta.N x O.delta.. In the formula, M is vanadium; T is a dopant which is at least one Group III  or Group IV transition metal; x is greater than 0 and less than or equal to 1;  .delta. is 0, or less than or equal to 4; a is less than or equal to 3-x; and .beta. is greater than zero and less than 0.2.
Patent CA-2333234-A1 (CA)
Title: Pyrazolyldioxothiochromanoyl derivatives
Inventor: VON DEYN WOLFGANG
IPC: C07D409/06
Filed: 1999-05-10
Abstract: The invention relates to pyrazolyldioxothiochromanoyl derivatives of formula (I) in which the variables have the following meanings: X represents oxygen, sulfur, S=O, S(=O)2, CR4R5, C=O or C=NR6; R1 hydrogen, nitro, halogen, cyano, alkyl, alkyl halide, alkoxy, alkoxy halide, alkyl thio, alkyl thio halide, alkyl sulfinyl, alkyl sulfinyl halide, alkyl sulfonyl, alkyl sulfonyl halide, optionally substituted amino sulfonyl or optionally substituted sulfonyl amino; R2 represents alkyl, alkyl halide, alkoxy or alkoxy halide; R3 represents hydrogen, alkyl or halogen; R4, R5 represent hydrogen, nitro, halogen, cyano, alkyl, alkyl halide, alkoxy, alkoxy halide, alkyl thio, alkyl thio halide, alkyl sulfinyl, alkyl sulfinyl halide, alkyl sulfonyl, alkyl sulfonyl halide or optionally substituted amino; or R4 and R5 jointly construct a chain which can be substituted and/or discontinued by oxygen or sulfur; or an optionally substituted methylidene group; l represents 0 to 4;  and R7 represents substituted pyrazole-4-yl-carbonyl or substituted pyrazole-4-yl-methylidene. The invention also relates to the salts of said derivatives which can be used for agricultural purposes, to a method for producing the pyrazolyldioxothiochromanoyl derivatives, to agents containing the same, and to the use of these derivatives or agents containing the same for controlling undesirable plants.
Patent CA-2333390-A1 (CA)
Title: Paint brush with hinged inverted bristle clamping panel, removable bristle pack and panel hinge yield member
Inventor: DOUGLAS TERRY R
IPC: A46B7/04
Filed: 1999-05-28
Abstract: This invention pertains to a novel paint brush (2) with inverted bristle clamping panel, a removable bristle pack (6) and a panel (10) hinge yield mechanism.  The paint brush (2) provides ready cleaning after use by disengaging the hinged inverted bristles clamping panel (10), removing the bristles and thereby exposing all of the bristles to the cleaning solution. The panel has a resilient release mechanism which yields slightly when undue force is applied to the inverted hinged panel against the bristles. A paint brush construction comprising: a) a paint brush body and handle, the body having formed therein a cavity for receiving a group of bristles (6);  b) a pivotal bristle bearing member positioned proximate to the cavity, the bristle bearing member when pivoted to a closed position applying a holding force against bristles held within the cavity, and the member when pivoted to an open position enabling bristles held within the cavity (14) to be removed; and c) a resilient yield location associated with the paint brush body and the pivotal bristle bearing member which enables the pivotal bristle bearing member to yield when the bristle bearing member encounters an undue force when being pivoted to the closed position.
Patent CA-2335605-A1 (CA)
Inventor: SANDSTROM PAUL A
IPC: G01N33/569
Filed: 1999-06-29
Abstract: La présente invention concerne des techniques, des dispositifs et des compositions intervenant dans la détection de rétrovirus endogènes présents dans des matériaux de xénogreffe. Ces techniques et compositions conviennent pour la détection de rétrovirus endogènes de type C et, en particulier, du rétrovirus endogène du porc, dit PERV.
Patent CA-2335644-A1 (CA)
Title: Effecteurs de phosphorylation
Inventor: LU DYUNG AINA M
IPC: C12N5/10
Filed: 1999-07-28
Abstract: L'invention concerne des effecteurs de phosphorylation humains (PHSP) et des polynucléotides identifiant et codant pour ces effecteurs. L'invention concerne également des vecteurs d'expression, des cellules hôtes, des anticorps, des agonistes et des antagonistes. L'invention concerne également des méthodes de diagnostic, de traitement et de prévention de troubles associés à l'expression des effecteurs de phosphorylation humains.
Patent CA-2335679-A1 (CA)
Title: Electronic chip functioned lock
Inventor: HUANG TSUN THIN
IPC: E05B47/00
Filed: 2001-02-12
Abstract: An electronic chip functioned lock whose tongue piece revolving mechanism is either manually operatable with a mechanical key, or by an electronic chip attached key. The lock mechanism is connected to a computer for reading input information to confirm the code stored in the chip so as to avoid unauthorized entry, and to amend, store, or erase the data in case of need.        The computer can further be interconnected to a local security system.
Patent CA-2335992-A1 (CA)
Inventor: HOFFMANN TORSTEN
IPC: A61P3/10
Filed: 1999-06-24
Abstract: L'invention concerne des composés prodicamenteux d'inhibiteurs de la dipeptidylpeptidase IV (DP IV), qui présentent la formule générale A-B-C dans laquelle A est un aminoacide, B est la liaison chimique entre A et C ou bien un aminoacide, et C un inhibiteur stable de la DP IV. Ces composés promédicamenteux s'utilisent pour traiter la tolérance glucidique altérée, la glucosurie, l'hyperlipidémie, les acidoses métaboliques, le diabète sucré, la neuropathie et la néphropathie diabétiques, ainsi que les maladies provoquées par le diabète sucré chez les mammifères.