baber/WOPTO huggingface dataset:
Patent CA-2196909-A1 (CA)
Title: Derivatives of 3-bromo- and 3, 3-dibromo-4-oxo-1-azetidines, processes for the preparation thereof and their use
Inventor: LUKIC IRENA
IPC: C07D205/08
Filed: 1997-02-05
Abstract: The invention relates to novel derivatives of 3-bromo- and 3,3-dibromo-4-oxo-1-azetidines, to processes for the preparation thereof and the use thereof.   According to the invention derivatives of 3-bromo- and 3,3-dibromo-4-oxo-1-azetidines are prepared by the reaction of 2-sulfinic acid derivatives, preferably 2-substituted sulfinamides of 4-oxo-azetidines with various halogenating agents, and after the treatment of the reaction mixture, 2-halo derivatives of 3-bromo- and 3,3-dibromo-4-oxo-azetidines are isolated and are subjected to a reaction with silver tetrafluoroborate and alcohols to give the corresponding 2-alkoxy derivatives of3-bromo- and 3,3-dibromo-4-oxo azetidines, or 2-halo derivatives of 3-bromo- and3,3-dibromo-4-oxo azetidines are subjected to a reaction with silver nitrate in 2-propanol to give, after the treatment of the reaction mixture, 2-nitroxy derivatives of 3-bromo and 3,3-dibromo-4-oxo-1-azetidines. Some newly prepared compounds are deprotected and derivatives having a free carboxy group are obtained.   The prepared compounds are components in pharmaceutical compositions effective in antibacterial or antitumour therapy.
Patent CA-2197452-A1 (CA)
Title: Methods and test kits for specific and sensitive diagnosing of periodontal diseases
Inventor: LUNDQVIST LEILA CHRISTINA
IPC: C12P21/08
Filed: 1995-08-18
Abstract: The present invention discloses methods and test kits which provide the means for a reliable, sensitive and selective assessment of periodontal disease activity, peri-implantitis or HIV(+)-infection/AIDS-disease related periodontal diseases. The preferred methods and test kits are constructed to be easy and rapid chair-side tests. The invention is based on the preparation and use of monoclonal antibodies which recognize the active mammalian matrix metalloproteinase-8 (MMP-8) and is capable of differentiating between said active matrix metalloproteinase-8 and its inactive proform.
Patent CA-2197941-A1 (CA)
Title: A pharmaceutical tablet characterized by a showing high volume increase when coming into contact with biological fluids
Inventor: CONTE UBALDO
IPC: A61K9/20
Filed: 1997-02-19
Abstract: A  description  is  given  of  a  pharmaceutical  form  for  oral administration consisting of a two- or three-layers tablet, wherein at least one layer can rapidly swell by contact with biological and/or aqueous fluids, said swelling resulting in a considerable increase in the tablet volume. Said phenomenon determines a prolonged residence of the pharmaceutical form at the gastric level and therefore allows a slow release of the active ingredient from said pharmaceutical form to the stomach and/or the first tract of the intestine.
Patent CA-2205490-A1 (CA)
Title: "the hipsaver" automatic wheelchair brake
Inventor: EAGAN DAVID MICHAEL
IPC: B62B5/04
Filed: 1997-05-23
Abstract: This is an automatic wheelchair brake mechanism that will prevent a wheelchair from moving backwards in the event that the person occupying the chair forgets to activate the wheelchair's manual brake.       The brake is activated by gravity whenever a person's bulk is removed from the chair.   Conversely, a person occupying the chair contacts a suspended sling which automatically deactivates the brake and allows the wheelchair to move in a normal manner.   The device is noteable for its simplicity--using gravity as an activating force, leverage instead of spring forces, a simple release mechanism and very small  activation and deactivation forces.       This device was invented in response to the large numbers of broken hips and other injuries incurred by elderly people who forget to set the manual brake before entering or exiting a wheelchair.
Patent CA-2206308-A1 (CA)
Title: Integrated process for increasing c6 to c8 aromatics content in reformate prepared from c9+ aromatics containing feed
Inventor: SHIH STUART SHANSEN
IPC: B01J29/06
Filed: 1995-11-14
Abstract: An integrated process for increasing C6 to C8 aromatics content in reformate prepared from C9+ aromatics-containing feed comprises: 1) pretreating a raw naphtha feedstream containing C9+ aromatics and sulfur by contacting with a) a hydrodesulfurization catalyst under hydrodesulfurization conditions to produce a hydrodesulfurized feedstream and thereafter b) cascading said hydrodesulfurized feedstream over a noble metal- and/or Group VIA metalcontaining porous crystalline inorganic oxide catalyst comprising pores having openings of 12-member rings under conditions sufficient to effect conversion of C9+ aromatics, thereby providing a pretreated effluent stream of enhanced C8- aromatics content relative to that obtained in the absence of said cascading; and 2) reforming at least a portion of said pretreated effluent stream to provide a reformate stream.
Patent CA-2207332-A1 (CA)
Title: Centrifugal energy retreiver
Inventor: BELZILE LUC
IPC: F03G3/00
Filed: 1997-06-20
Abstract: In  the case  of  a  weight  rotating  around  a  vertical  axis, centrifugal  force tend to pull  that weight away  from the axis. My invention called a "centrifugal energy retreiver" use the centrifugal force to produce energy.
Patent CA-2207583-A1 (CA)
Title: Process for the production of 2-(substituted benzoyl)1,3 cyclohexanediones
Inventor: RAWLINSON HOWARD
IPC: B01J31/02
Filed: 1996-01-16
Abstract: A process for preparing a compound of formula (I), where R1, R2, R3 R4, R5 and R6 are independently hydrogen or C1-6 alkyl; R7 is halogen, cyano, NO2, C1-4 alkyl, C1-4 haloalkyl, C1-4 alkoxy or RaS in which Ra is C1-4 alkyl; R8, R9 and R10 independently are hydrogen, halogen, C1-4 alkyl, C1-4 alkoxy, C1-4 haloalkyl, C1-4 haloalkoxy, CN, NO2, phenoxy or substituted phenoxy;     R b S(O)n Om in which m is 0 or 1, n is 0, 1 or 2 and Rb is C1-4 alkyl, C1-4 haloalkyl, phenyl or benzyl, NHCOR c in which Rc is C1-4 alkyl, NRdRe in which Rd and Re indenpendently are hydrogen or C1-4 alkyl; RfC(O)- in which Rf is hydrogen, C1-4 alkyl, C1-4 haloalkyl or C1-4 alkoxy; SO2NRgRh in which Rg and Rh independently are hydrogen or C1-4 alkyl; or any two of R8, R9 and R10 together with the carbon atoms to which they are attached form a 5 or 6 membered heterocyclic ring containing up to three heteroatoms selected from O, N or S and which may be optionally substituted by =NOC1-4 alkyl, C1-4 alkyl, C1-4 haloalkyl, C1-4 alkoxy or halogen; which process comprises the rearrangement of a compound of formula (II) where R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 are as defined in relation to formula (I), in a non-polar solvent in the presence of a cyanide source, an alkali or alkaline earth metal carbonate, a phase transfer catalyst and 1-6 moles of water with respect to the compound of formula (II).
Patent CA-2207837-A1 (CA)
Title: Fuel injection bar for ramjet engine operating at high mach number
Inventor: BALEMBOY CHRISTOPHE
IPC: F02K7/10
Filed: 1997-06-13
Abstract: - Fuel injection bar (6) for a ramjet engine designed to operate at a high Mach number. - According to the invention, the said bar comprises a body (10) of carbon-carbon composite, in which is arranged a row of elementary injectors, and a nose piece (11) consisting of a thin skin of carbon-carbon composite at least approximately in the shape of a dihedral of which the apex (11A) has a radius (r) of curve not exceeding 2 mm and which describes an angle not exceeding 15 degrees. In the said body (10), are arranged means (23, 27) of injecting a coolant fluid into the sealed chamber (18), the said means of injection producing multiple jets of coolant fluid under pressure striking the concave face of the said skin (11).
Patent CA-2208959-A1 (CA)
Inventor: REID GARY L
IPC: B64F5/00
Filed: 1995-12-21
Abstract: A method and apparatus are provided for de-icing an aircraft (13) of the type having wings (15) and fuel storage (17) in the wings (15). Hot fuel is provided for fueling the aircraft (13). The hot fuel is at elevated temperatures which are sufficiently high enough to transfer heat from the fuel, through a fuel tank (17) extending within the wings (15), and to the exterior of the wings (15) to de-ice the aircraft (13). A storage tank (29) stores the fuel, and a heater (31) heats the fuel to elevated temperatures. An intermediate thermal transfer system (47) having a secondary thermal fluid (55) transfers heat from a primary power source (45) to the fuel. Further, a substantial volume of the secondary thermal fuel may be maintained at elevated temperatures to provide a sufficient thermal reserve capacity for heating the fuel upon demand.
Patent CA-2209258-A1 (CA)
Title: Method for preparing pyrimidin-2-ylacetic acid esters
Inventor: BESSARD YVES
IPC: C07D239/52
Filed: 1997-06-27
Abstract: A method is described for preparing pyrimidin--2-ylacetic acid esters of the general formula:       wherein R is C1-6-alkyl, C3-6-cycloalkyl, aryl or arylalkyl and R1 to R3, independently of one another, each represent hydrogen, C1-6-alkyl, fluorinated C1-6-alkyl, C1-6-alkoxy, (C1-6-alkoxy) -C1-6-alkyl or (C1-6-alkoxy) carbonyl. The esters I are obtained from the corresponding 2-(halomethyl)pyrimidine, the corresponding alcohol ROH and carbon monoxide in the presence of a palladium-phosphine complex and a base. The pyrimidin--2-ylacetic acid esters are intermediates in the preparation of herbicides.
Patent CA-2209619-A1 (CA)
Title: Thrombolytic agents
Inventor: IWAKI MASAHIRO
IPC: A61K31/415
Filed: 1995-01-05
Abstract: A perorally administrable thrombolytic agent containing 6-amidino-2-naphthyl 4¢(4,5-dihydro-1H-imidazol-2-yl)amino!benzoate or a medicinally acceptable acidaddition salt thereof as the active ingredient.
Patent CA-2209947-A1 (CA)
Inventor: LEGGETT JAMES V III
IPC: E21B44/00
Filed: 1996-01-16
Abstract: This invention is directed toward apparatus and methods for obtaining acoustic measurements or "logs" of earth formations penetrated by a borehole. More particularly, the invention is directed toward obtaining the acoustic measurements while the borehole is being drilled. The downhole apparatus comprises a plurality of segmented transmitters and receivers which allow the transmitted acoustic energy to be directionally focused at an angle ranging from essentially 0 degree to essentially 180 degrees with respect to the axis of the borehole. Downhole computational means and methods are used to process the full acoustic wave forms recorded by a plurality of receivers. A two way communication system is also used in the preferred embodiment of the invention.
Patent CA-2214616-A1 (CA)
Title: Method and apparatus for element management
Inventor: SONG JAMES JISHENG
IPC: G06F17/00
Filed: 1997-09-04
Abstract: One embodiment of the invention includes a method for managing a plurality of network elements in a Fiber-to-the-Curb (FTTC) telecommunications system. The FTTC system includes a computer system. The computer system is coupled in communications with the plurality of network elements.  The method comprises the following steps. Display a plurality of choices on the computer system. The plurality of choices corresponds to a provisioning equipment function, a provisioning telephony services functions and a provisioning broadband services function. Receive a selection identifying a choice and identifying one or more selected network elements.  Provision the one or more selected network elements.
Patent CA-2217117-A1 (CA)
Title: Multi-purpose folding tool and locking mechanism therefor
Inventor: NAAS ROBERT
IPC: B25F1/00
Filed: 1997-09-30
Abstract: A multi-purpose folding tool which features inwardly tapered handles to provide external plier jaw storage, thereby leaving greater room for supplemental tool storage inside the handles, a box-beam handle construction for greater strength, downwardly opening handles to facilitate east of use, a unique supplemental tool locking and release mechanism, and laminated plier jaws which are riveted together for even greater strength and overall integrity.
Patent CA-2218931-A1 (CA)
Inventor: ROJEY ALEXANDRE
IPC: F17D1/16
Filed: 1997-11-12
Abstract: ~ Procédé pour transporter un fluide (I) circulant dans une conduite, la conduit e comporte une structure poreuse ou un revêtement poreux à l'intérieur duquel on injecte un fluide qui est au moins partiellement immiscible au fluide transporté . ~ Conduite pour transporter un fluide (I) comportant une structure poreuse ou un revêtement poreux permettant de retenir à l'intérieur des pores un fluide (II) partiellement immiscible au fluide (I). ~ Figure 5B à publier.
Patent CA-2220371-A1 (CA)
Title: Apparatus and method for generating ultimate surfaces on ophthalmic lenses
Inventor: SAVOIE MARC Y
IPC: B24B13/06
Filed: 1997-11-06
Abstract: The apparatus comprises a base having orthogonal horizontal longitudinal axis, horizontal transversal axis and vertical axis, and a tool spindle having a motor and a lens surfacing tool mounted on a rotatable arbour of the motor. The apparatus also comprises a lens holder having a chuck for retaining an ophthalmic lens with a perimeter thereof defining a plane being substantially perpendicular to the longitudinal axis. A first linear slide is affixed to the base and has a first movable support and a first actuator for moving the first movable support along the longitudinal axis. A second linear slide is also affixed to the base and has a second movable support supporting the lens holder and a second actuator for moving the second movable support and the lens holder along the transversal axis. A rotary table is affixed to the first movable support and supports the tool spindle. The rotary table has a third actuator for rotating the rotary table about the vertical axis. A computer is provided for simultaneously controlling displacements of the first, second and third actuators, whereby the first, second and third actuators are operable in a compound mode for enhancing the precision of the movements of the lens surfacing tool in a direction normal to the ophthalmic lens.
Patent CA-2220947-A1 (CA)
Title: Layered body for absorbing liquids, its production and use
Inventor: THEILMANN ROLAND
IPC: A61L15/60
Filed: 1996-02-14
Abstract: The invention pertains to layered bodies used to absorb water and aqueous fluids and made from at least one water-soluble polymer foam layer and particulate superabsorbent polymers in a 1:500 to 50:1 ratio of polymer foam to superabsorber, the superabsorber being arranged on, within or under the polymer layer in a quantitatively and/or positionally predetermined and set areal arrangement. The polymer foam may contain fillers, pigments and/or synthetic fibers. The layered bodies have increased power to absorb water and aqueous fluids, especially under load. They are produced by spreading the foam in a sheet, applying the superabsorber in the prescribed ratio, optionally using a mask, and fixing it by heat treatment. Such layered bodies are used in hygienic products, as components in natural or artificial soils, as insulating material for pipes and lines, especially cables, and building units, as liquid-absorbing and -retaining components in packing materials and incorporated in clothing.
Patent CA-2221023-A1 (CA)
Inventor: DEZAEL CLAUDE
IPC: B01D53/52
Filed: 1996-06-12
Abstract: A method and a device for processing a gas containing hydrogen sulphide and sulphur dioxide, wherein the gas is contacted with an organic solvent (1) containing a catalyst in at least one gas/liquid reactor/contactor (2) at a suitable temperature, and the gas (20) substantially free of hydrogen sulphide and sulphur dioxide is recovered. Specifically, a single-phase solvent and sulphur solution (4) is drawn off from the reactor/contactor, a portion thereof is cooled in at least one cooling area (8) to form a suspension of sulphur crystals in the solvent, the crystallised sulphur is separated from the solvent in a separation area (10), and both a sulphur-depleted solvent (14, 15) that is at least partially recycled (1) in the reactor/contactor (2), and sulphur (13), are recovered. The method and device are useful for purifying effluents from Claus units.
Patent CA-2222565-A1 (CA)
Inventor: JACOBS GREGORY F
IPC: E01F9/619
Filed: 1996-06-27
Abstract: Retroreflective article (80) that provides effective retroreflective brightness at very high entrance angles as well as low entrance angles and under wet conditions. The article comprises spherical refracting elements (60) having an index of refraction above 1.35 and below 1.75 adhered to the cover (66) film of an enclosed-lens retroreflective base sheet.
Patent CA-2222588-A1 (CA)
Title: System for girding articles
Inventor: LANGERAK ALFRED
IPC: B65B67/06
Filed: 1996-06-11
Abstract: System for girding an article with a strip of adhesive tape. The system comprises a girding device and a roll of adhesive tape (8), and if desired also a roll of paper tape (10). The girding device comprises a housing (4) provided with a slot (5) which is intended for moving the article through it, and means for rotatably supporting the roll of adhesive tape, and also the roll of paper tape if present. At one side of the slot lies a star wheel (11) with spokes which extend over the slot and are separated by recesses which are suitable for accommodating the article when it is being moved through the slot and passes the star wheel in the process. The girding device and the roll of adhesive tape and/or the roll of paper tape are designed in such a way that the roll in question can be placed in only one position in the girding device.
Patent CA-2226259-A1 (CA)
Title: Eddy current drive
Inventor: BOGGS PAUL DEWEY III
IPC: H02K11/00
Filed: 1996-04-15
Abstract: An eddy current drive (711) has an electromagnet (15, 17) and an armature (19). Either one of the electromagnet or the armature is coupled to a motor shaft (31) so as to rotate therewith, while the other is coupled to a load portion (21). The motor can rotate at a continuous speed, while the speed of the load portion can vary by varying the energization of the electromagnet, so as to vary the coupling between the electromagnet and the armature. The electromagnet is energized by way of bearings (613, 615). The bearings provide a rotary coupling. In another embodiment, an electrical generator (713) is provided. The rotation of the motor shaft (31) generates electrical current that is used to energize the electromagnet. The amount of the electrical current that is provided to the electromagnet can be varied to vary the output speed of the load portion.
Patent CA-2229324-A1 (CA)
Inventor: ITO EISAKU
IPC: F01D5/20
Filed: 1998-02-11
Abstract: The invention relates to a cavity constituted by a casing of a gas turbine and a moving blade with a tip shroud,  by which a cavity space is made to a necessary minimum size, a main flow gas is prevented from being entrained and a pressure loss is reduced.  A tip shroud (6) is mounted on a tip end portion of a moving blade (4), a fin (7) is mounted thereon,  a recess-like cavity (15)  narrower than the conventional one is formed by portions (12a) and (12b) of a casing (12) and the fin (7), and further a projecting portion (16) is provided to an upstream end portion of the tip shroud (6).  The projecting portion (16)  is at a position (13a) at a time of a cold start and is at a position (13b) at a time of a hot start run, even if a thermal expansion occurs,  thus the projecting portion (16) is not in contact with the recess portion,  a main flow gas (1) is less entrained within the cavity (15), and a pressure loss is reduced because of no swirl,  so that a performance of the gas turbine is enhanced.
Patent CA-2232028-A1 (CA)
Title: Wheat starch with novel characteristics
Inventor: YANAGISAWA TAKASHI
IPC: A23L7/109
Filed: 1998-03-11
Abstract: The present invention relates to wheat starch which reaches the peak viscosity at 75 to 85 °C and whose amylose content is 0.8 % or more and 2.5 % or less, as well as to foods containing the same.  Wheat flour which is of glutinous properties and excellent in viscosity stability is provided.
Patent CA-2232038-A1 (CA)
Inventor: CHEN YU-TO
IPC: D06F58/38
Filed: 1998-03-12
Abstract: The present  invention discloses a system and method  for  predicting  the  dryness  of  clothing articles in a clothes dryer 10.   In one embodiment of  this  invention,  the  clothes  dryer  10  uses  a temperature sensor 52, a phase angle sensor 54, and a humidity   sensor   56   to   generate   signal representations of the temperature of the clothing articles, the motor phase angle, and the humidity of the  heated  air  in  the  duct,  respectively.    A controller  58  receives  the  signal  representations and determines a feature vector.   A neural network 168 uses the feature vector to predict a percentage of moisture content and a degree of dryness of the clothing  articles  in  the  clothes  dryer  10.    In another embodiment of  this  invention,  the clothes dryer uses a combination of sensors to predicts a percentage  of  moisture  content  and  a  degree  of dryness of the clothing articles.
Patent CA-2232401-A1 (CA)
Title: Materials for shock attenuation
Inventor: WISE SEAN
IPC: E04H9/04
Filed: 1998-03-17
Abstract: Materials with exceptional shock attenuating properties are chemically bonded ceramics having densities that range from 30 to 160 lb/cubic foot (0.48 to 2.56 g/cc) and porosities of 20 % to 80 %. The materials are chemically bonded ceramic composites based on Portland cement, silica fume, various hollow fillers, and may include a dispersing agent, any of a variety of fibers and water.
Patent CA-2236825-A1 (CA)
Title: Inhibition of tumor growth by antisense oligonucleotides for il-8 and il-8 receptor
Inventor: PIETRZKOWSKI ZBIGNIEW
IPC: A61K31/70
Filed: 1996-11-16
Abstract: Oligonucleotides are provided which are effective in inhibiting the growth, metastasis and/or angiogenesis of tumors, including particularly melanoma and/or lung cancer. Methods are also provided for use of these olignonucleotides in the treatment of diseases.
Patent CA-2237060-A1 (CA)
Inventor: KRATZ DETLEF
IPC: C07C29/10
Filed: 1996-12-11
Abstract: The proposed production of 1,6-hexane diol involves the following steps: a) epoxybutadiene is reacted in the presence of a metathesis catalyst, ethene being broken down to bisepoxihexatrienes of formulae (Ia) and (Ib); and b) these bisepoxihexatrienes are then hydrated with hydrogen to form 1,6-hexane diol.
Patent CA-2238024-A1 (CA)
Title: Self-stabilizing pitch for carbon fiber manufacture
Inventor: SOUTHARD W MARK
IPC: C10C3/08
Filed: 1995-12-06
Abstract: This invention provides a process for preparing a solvated isotropic pitch having a fluid temperature at least 40 °C lower than the same pitch in the non-solvated state. Additionally, the present invention provides a solvated isotropic pitch which may be formed into carbon artifacts which do not require oxidative stabilization prior to carbonization.
Patent CA-2238471-A1 (CA)
Title: Treatment of the cns effects of hiv with vx-478, alone or in combination with azt or 3tc
Inventor: CHATURVEDI PRAVIN RAMSEWAK
IPC: A61K31/7068
Filed: 1996-12-05
Abstract: Methods and compositions for treating the central nervous system (CNS) effects of HIV, particularly AIDS related dementia.
Patent CA-2240147-A1 (CA)
Inventor: WILLIAMS PAUL MICHAEL
IPC: G01N33/00
Filed: 1996-12-12
Abstract: This invention relates to a method and apparatus for measuring ethanol vapour concentration. Both methods and the apparatus determine the gradient of the initial steady state part of the output of a fuel cell prior to a peak height being reached and use that determination to generate an ethanol vapour concentration signal.