baber/WOPTO huggingface dataset:
Patent CA-2034501-A1 (CA)
Title: Divergence and marking device for target pointer
Inventor: BAIKRICH MICHEL
IPC: F41G1/35
Filed: 1990-06-01
Abstract: A divergent lens (4) with a small-diameter centrally-drilled hole (5), is placed in sight of the window (12) of a laser beam sighting device (10) in order to intercept a laser beam with practically parallel rays (13) from the sighting device, the lens (4) deflecting the laser rays which reach it around the central hole (5) in order to produce a divergent beam (14), while the rays which reach the central hole (5) pass through it without being deflected, so that a thin pencil of rays (15) of greater intensity is formed and can mark a target. The divergent lens (4) is, for example, mounted in a window (3) in the head of a body (3) which slides over and covers the head (11) of a laser beam sighting device (10). The divergent lens (4) may also be mounted in the window (12) provided in the head (11) of a laser beam sighting device (10).
Patent CA-2040796-A1 (CA)
Title: Air separation
Inventor: BUTTLE ANDREA
IPC: C01B13/02
Filed: 1991-04-18
Abstract: A compressed air stream is separated in a double rectification column 8 having a higher pressure stage 10 and a lower pressure stage 12. The lower pressure stage 12 contains a low pressure drop liquid-vapour contact means 13 having a pressure drop of less than 400 Pa per theoretical stage, for example a structured packing, to effect mass transfer between ascending vapour and descending liquid. A product gaseous oxygen stream is withdrawn from the stage 12 through an outlet 36 and is warmed to about ambient temperature in the heat exchanger 6 in countercurrent flow relationship with the compressed air stream which is thereby cooled. Refrigeration for the process is created by expansion of part of the incoming air. By using a low pressure drop liquid-vapour contact means 13 in the lower pressure stage 12, the resulting operating pressure in the higher pressure stage is able to be lower than in a conventional process enabling the incoming air to be compressed to a lower pressure (for example a pressure in the range 5 to 6 bar). At such pressures, two expansion turbines 54 and 56 are used to enable the heat exchanger 6 to be operated efficiently.
Patent CA-2041570-A1 (CA)
Title: Modified clinoptilolite as an ion exchange material
Inventor: HUTCHINGS GRAHAM J
IPC: B01J39/14
Filed: 1991-05-01
Abstract: ABSTRACT   An ion exchange material for the removal of radioisotope cations such as the cations of caesium and strontium from an aqueous environment containing the radioisotope cation comprises a modified clinoptilolite produced by treating a natural clinoptilolite with sodium hydroxide at a concentration of approximately 2M or with hydrochloric acid at a concentration of from 0,1M to 5M for a suitable treatment time and at a suitable treatment temperature. The modified clinoptilolite is especially effective in the removal of radioisotope cations from an aqueous environment.
Patent CA-2044323-A1 (CA)
Title: Method for removing polychlorinated dibenzodioxins and polychlorinated dibenzofurans and stickies from secondary fibers
Inventor: BLANEY CAROL A
IPC: D21C9/08
Filed: 1991-06-11
Abstract: ABSTRACT OF THE DISCLOSURE      A process for removing stickies and/or PCDD's and PCDF's from cellulose-containing  fibers  such as waste paper is provided.  The process comprises contacting the fibers with supercritical or near supercritical propane for a period of time sufficient to extract a substantial portion of the stickies  and/or  PCDD's  and  PCDF's  without  substantially damaging the fibers.  Extraction efficiencies of up to 95% of PCDD's or PCDF's and about 70% to 95% of stickies have been achieved with the technique.
Patent CA-2044862-A1 (CA)
Inventor: ZIMMERMANN HEINZ
IPC: C02F1/461
Filed: 1991-06-18
Abstract: The invention relates to an apparatus for removing cations/anions from liquids, having a container (11) containing the liquid in which a layer of ion exchanger material (6) and also a cathode (9) and an anode (4), to which voltage is applied, are disposed, the layer of ion exchange material (6) being between the anode (4) and the cathode (9) and there being a free liquid-filled space as a treatment space (10) between the layer of ion exchange material (6) and the cathode (9) and there being a liquid-filled outer space (15) between the cathode (9) and the wall of the container (11), the treatment space (10) and the outer space (15) being connected to one another at least at both ends in order to permit liquid circulation.
Patent CA-2045089-A1 (CA)
Title: Rubber composite material mixed with short staple reinforcing fibers and method of manufacturing the same
Inventor: HAMADA TAKASHI
IPC: B29K21/00
Filed: 1991-06-20
Abstract: RUBBER COMPOSITE MATERIAL MIXED WITH  SHORT STAPLE REINFORCING FIBERS AND  METHOD OF MANUFACTURING THE SAME                    Abstract of the Disclosure A Composite material,  suitable for use in a power transmission belt, having a rubber matrix and a plurality of short staple reinforcing fibers therein of methaphenyleneiso-phthalamide coated with one of a rubber latex and a rubber paste.  The invention is also directed to a method of forming the composite material.
Patent CA-2046025-A1 (CA)
Inventor: ACREE WILLIAM M
IPC: C07K14/20
Filed: 1991-07-02
Abstract: ABSTRACT            The invention relates to vaccines comprising at least two antigens of 14, 17, 19, 25, 28, 31, 34, 38, 41, 44, 48, 52, 54, 60, 68, 80, and 90K molecular weight (+3K) which are useful for protecting an animal from Lyme disease.  A method of making a Lyme disease vaccine and a novel Lyme disease challenge model are also described.  One embodiments of the method of making the vaccine isolates the antigens from the outer membranes of B. burgdorferi bacteria.
Patent CA-2046171-A1 (CA)
Title: Sulfur-substituted mevinic acid derivatives
Inventor: VARMA RAVI K
IPC: A61K31/22
Filed: 1991-07-04
Abstract: SULFUR-SUBSTITUTED MEVINIC ACIDS                Abstract of the Disclosure   and pharmaceutically acceptable salts thereof possess activity as cell-selective HMG-CoA reductase inhibitors, thus making them useful as antihypercholesterolemic agents.  In the above formula, X is hydrogen or -S(O)m-R1 and Y is hydrogen or S(O)n-R2, except that X and Y are not both hydrogen, or one of X and Y is -S-alkyl-SH and the other is hydrogen;     Z is       or           ; and the remaining symbols are as defined in the specification.
Patent CA-2047063-A1 (CA)
Title: Method for folding tissue plasminogen activators and erivatives thereof
Inventor: MACKELLAR WARREN C
IPC: C12N9/72
Filed: 1991-07-15
Abstract: Abstract The present invention discloses and claims the addition of lysine to protein folding procedures to improve the yield of substrate specific, enzymatically active tissue plasminogen activator or tissue plasminogen activator derivatives comprising kringle-2.
Patent CA-2049395-A1 (CA)
Title: Bearing isolator
Inventor: BAIR JOHN J
IPC: F16C27/06
Filed: 1991-08-16
Abstract: ABSTRACT   A two-piece bearing isolator assembly for mounting roller or ball bearing races to a mounting structure for journalling a shaft.  An outer Z-shaped metallic ring has outwardly and inwardly extending flanges on opposite axial margins.  The outward flange retains the ring axially in a mounting structure; whereas, the inner flange retains plastic energy absorbing pad means receiving the outer race, in line-to-line contact, of a bearing to be mounted.  In one embodiment the pad means comprises separate pads disposed in circumferentially spaced apertures in the metallic ring.  In another embodiment, the pad means comprises separate pads spaced circumferentially about an integrally formed plastic ring received in the metallic ring.  The inner flange also serves as a stop for limiting radial movement of the bearing with respect to the mounting structure.
Patent CA-2050959-A1 (CA)
Title: Tower with folding braces for fixed offshore platform
Inventor: HANEY JAMES A
IPC: E02B17/02
Filed: 1991-09-09
Abstract: ABSTRACT OF THE INVENTION    This invention pertains to a braced offshore structure that is constructed on land as a single unit in a compact bundle before being transported on a barge to the installation site.        After the compact unit is launched, it is unfolded and ballasted before being  installed upon the ocean floor.   This  structure consists of an elongated central tower having a plurality of braces pivotally secured thereto.   These braces are initially positioned  generally  parallel  to  this  central  tower  within recesses in the central tower but after the braces are unfolded, they extend at an angle to the central tower.
Patent CA-2051276-A1 (CA)
Title: Wishbone boom for sailboats
Inventor: NAMUR MARC
IPC: B63B35/79
Filed: 1991-09-13
Abstract: Abstract In order to lock the extension booms 3 to the main booms 1 when the wishbone boom has been adjusted to a length that corresponds to the size of sail that is used, the outer sleeves 9 that are installed loosely on the extension booms 3 are slid onto the inner sleeves 5 in the direction indicated by the arrow a.  When the outer sleeves 9 are slid on into position, the detent tabs 6 of the inner sleeve 5 are pressed together radially by the compressive force that is exerted by the ends 13 of the outer sleeve 9 through the clamping bead 7 onto the detent tabs 6, so that the detent ring segments 8 of the detent tabs 6 enter into detent in the peripheral groove 10 of the extension boom 3 and the flat ring sections 20 that are moulded on the inner side 18 of the slightly flexible teeth 15 of the face serrations 14 on the end 13 of the outer sleeve 9 enter into detent behind the clamping bead 7 that is moulded onto the inner end sections of the detent tabs 6 and the face serrations 12, 14 on the inner sleeve 5 and the outer sleeve 9 engage with each other so that the sleeves are locked to each other.     The locking system is released by rotating the outer sleeve 9 in the direction indicated by arrow b or c, whereby the face serration 14 on the end 13 of the outer sleeve 9 slides out of the face serration 12 of the inner sleeve during simultaneous displacement of the outer sleeve 9 in the direction indicated by the arrow d and release of the ring sections 20 of the teeth 15 on the end 13 of the outer sleeve 9 from the clamping bead 7 on the inner sleeve 5, and by simply withdrawing the outer sleeve 9 from the inner sleeve 5.
Patent CA-2053648-A1 (CA)
Title: High-frequency, high-leakage-reactance transformer
Inventor: ALLEY ROBERT P
IPC: H01F38/08
Filed: 1991-10-17
Abstract: RD-19,701 HIGH-FREQUENCY, HIGH-LEAKAGE-REACTANCE               TRANSFORMER                Abstract A high-frequency, high-leakage-reactance transformer has a section of low-permeability magnetic material disposed between planar primary and secondary windings.  The low-permeability section provides a controlled flux path for the leakage flux between the primary and secondary windings.  Excessive eddy currents are thus prevented from flowing in the planar windings, and high-efficiency operation is achieved.  The high-leakage-reactance transformer can function both as a transformer and an inductor, thereby reducing the size of, for example, a resonant power supply or a discharge lamp ballast.
Patent CA-2055041-A1 (CA)
Title: Use of xanthines for the preparation of a medicament effective for inhibiting the replication of human retroviruses
Inventor: DEZUBE BRUCE J
IPC: A61P31/12
Filed: 1991-11-06
Abstract: ABSTRACT OF THE DISCLOSURE        A family of compounds effective in inhibiting replica-tion of a human retrovirus is comprised of 7-(oxoalkyl) 1,3-dialkyl xanthines of the formula:                       (I) in which R1 and R2 are the same or different and are selected from the group consisting of straight-chain or branched alkyl radicals with 2 to 6 carbon atoms, cyclohexyl, alkoxyalkyl and hydroxyalkyl radicals, and A represents a hydrocarbon radical with up to 4 carbon atoms which can be substituted by a methyl group. Another family of effective compounds is comprised of compounds of the formula:                           (II) wherein at least one of R1 and R3 is either a ) a branched hydroxyalkyl group of the formula   in which R4 stands for an alkyl group with 1 to 3 carbon atoms and n stands for a whole number from 2 to 5, the other R1 or R3 group that may optionally be present stands for a hydrogen atom or an aliphatic hydrocarbon group R5 with up to 6 carbon atoms, whose carbon chain may be interrupted by up to 2 oxygen atoms or may be substituted with a hydroxy or oxo group, or b)  an oxoallyl group of the formula   wherein R6 is C1-C6 and p is 2, 3 or 4, the remaining R1 or R3 being as defined above, and R2 is an alkyl group C1-C4. The inhibition of replication of human retroviruses is indicated in humans infected by human immunodeficiency virus (HIV) or susceptible to HIV infection.
Patent CA-2055410-A1 (CA)
Title: Composite bridge amplifier
Inventor: FRENCH JOHN B
IPC: H03F3/217
Filed: 1991-11-13
Abstract: A composite bridge amplifier having four output metal oxide semi-conductor field effect transistors (mosfets) in a bridge configuration. The gates of the mosfets are controlled by an input signal which is amplified in a diamond differential amplifier phase splitter and voltage gain stage and then applied to the mosfet gates. The power terminals (sources and drains) of the mosfets receive a power signal which varies with the input signal at a level sufficient to maintain headroom above the output signal but to reduce power dissipation in the mosfets. The power signal is produced by a switch connected between a floating power supply and a filter and operated at e.g. 200 KHz. The switch is operated by a pulse width modulated (pwm) signal derived from the absolute value of the input signal. Because the power signal in effect tracks the output signal, little power is dissipated in the mosfets so that the amplifier can be made very compact. Because of the bridge configuration, only one switch, one floating power supply and one pulse width modulator are used, reducing cost. Feed forward compensation in the pulse width modulator varies the pulse width of the pulses operating the switch inversely with changes in the power supply voltage, allowing the floating power supply to be unregulated.
Patent CA-2056547-A1 (CA)
Title: Deinking agent for reclaiming waste paper
Inventor: OKAMOTO YUTAKA
IPC: C07C69/58
Filed: 1991-11-28
Abstract: Abstract of the Disclosure A deinking agent for reclaiming waste paper comprises (A) (1) a polyoxyalkylene adduct of a higher fatty acid ester of polyhydric alcohol, which ester has one to three terminal OH groups, wherein the higher fatty acid has 8 to 24 carbon atoms, the polyhydric alcohol has at least 4 carbon atoms, total molar number of added alkylene oxide is 10 to 200 and the alkylene oxide has 2 to 4 carbon atoms, or (2) a higher fatty acid ester of a polyoxyalkylene adduct of polyhydric alcohol wherein the higher fatty acid has 8 to 24 carbon atoms, total molar number of added alkylene oxide is 10 to 200, the alkylene oxide has 2 to 4 carbon atoms and the ester has one to three terminal OH groups; or comprises (A) the foregoing compound; and (B) a polyoxyalkylene alkyl ester or fatty acid. The deinking agent has various excellent properties, for instance, has excellent ability of removing or collecting inks included in pulp fibers of newspaper, magazines, colored wood-free paper and paper for recording information as well as various waste paper printed with inks such as offset inks, inks for typographic printing and toner inks and can provide high quality reclaimed pulp having high whiteness and a low content of remaning ink and which does not look dark and dull. Further, it can impart stable and trouble-free operability to the deinking process.
Patent CA-2061006-A1 (CA)
Inventor: GILSON JEAN-MARC
IPC: C01B21/097
Filed: 1992-02-11
Abstract: Abstract of the Disclosure A phosphonitrile halide catalyst for use in polymerising organopolysiloxanes has the general formula   wherein X is halogen, M is an element with an electronegativity of from 1.0 to 2.0, R is C1-12 alkyl, n is 1 to 6, v is the valence or oxidation state of M and t has a value of from 0 to v-1.  A method for making the catalyst and its use in the polymerisation process of siloxanes especially by condensation is also claimed.
Patent CA-2067772-A1 (CA)
Title: Method of joining steel sheet bars in hot rolling and a continuous hot rolling method
Inventor: TAKECHI TOSHISADA
IPC: B21B1/26
Filed: 1991-08-01
Abstract: In this invention, a back end portion of a preceding sheet bar and a front end of a succeeding sheet bar are cut in a transfer line at an entrance side of a finish rolling mill so that at least both side edge regions of these sheet bars are contacted with each other at a butted contact state thereof and a gap is formed between both end portions and then portions to be joined in the preceding and succeeding sheet bars are locally heated and pushed to join them while gradually enlarging a joining area, whereby the required time is largely reduced as compared with the conventional technique and also it is attempted to miniaturize the heating apparatus and shorten the length of the apparatus.
Patent CA-2069983-A1 (CA)
Title: Method for improving the aging resistance of the sidewalls of retreaded tires
Inventor: MAKINO YOSHIHIRO
IPC: C08J7/00
Filed: 1992-05-29
Abstract: A method for improving the aging resistance of the sidewalls of retreaded tires  is provided.   The method involves the steps of treating the surface of the sidewalls of the worn tire to be retreaded with an aqueous  solution  or  dispersion  containing  a film-forming  polymer  and  an  antiozonant,  retreading the treated tire and then curing the treated retreaded tire thereby causing the antioxidant to migrate into the inner portion of  the  sidewall.   The method of  the invention  is  particularly  useful  for  improving  the aging resistance of the sidewalls of worn truck and bus tires which are conventionally retreaded several times.
Patent CA-2070123-A1 (CA)
Title: Organic phosphates and their preparation
Inventor: KOLICH CHARLES H
IPC: C07F9/12
Filed: 1992-06-01
Abstract: Case EP-6351 ORGANIC PHOSPHATES AND THEIR PREPARATION      Abstract of the Disclosure Compositions comprising a combination of (i) at least one hydrocarbon-soluble aryl phosphate of the formula (RO)3PO wherein  each R is,  independently,  phenyl  or an  alkyl-substituted phenyl group; and (ii) at least one hydrocarbon-soluble aryl polyphosphate of the formula   wherein  each R  is,  independently,  phenyl  or an alkyl-substituted phenyl group, Ar is m-phenylene or an alkyl-substituted m-phenylene group, and n is from 1 to 4.  The combination contains from 2 to 30% by weight of component (i).  These compositions are made by (a) reacting about 1.9 to about 2.1 equivalents of phenol or alkyl-substituted phenol with one equivalent of phosphoryl trihalide, and (b) reacting the intermediate product formed in (a) with from about 0.9 to about 1.1 equivalents of resorcinol or alkyl-substituted resorcinol per equivalent of phosphoryl triha-lide employed in (a).  Alternatively, the compositions are made by (a) reacting about 0.9 to about 1.1 equivalents of resorcinol  or  alkyl-substituted  resorcinol  with  one equivalent of phosphoryl trihalide, and  (b)  reacting the intermediate product formed in (a) with from about 1.9 to about 2.1 equivalents of phenol or alkyl-substituted phenol per equivalent of phosphoryl trihalide employed in (a).  The compositions are useful as wear inhibitors for fuels and lubricants and as flame retardants for polymeric materials.
Patent CA-2070927-A1 (CA)
Inventor: ANDO KATSUTOSHI
IPC: D04H3/07
Filed: 1992-06-10
Abstract: Disclosed are a process for producing a tubular nonwoven fabric and tubular nonwoven fabrics produced by the same.  In the process, a web is formed on a first rotating cylinder by catching fibers carried to the surface of the first rotating cylinder by a fluid, the web is transferred to a second rotating cylinder, a tube of the transferred web is formed on and around the second rotating cylinder, and the tube is drawn in the axial direction of the second rotating cylinder to form a tubular nonwoven fabric.  The tubular nonwoven fabric with a high unit weight can be produced without elongating or breaking the nonwoven fabric, and the diameter of the tubular nonwoven fabric can be freely changed.
Patent CA-2071831-A1 (CA)
Inventor: KYRTSOS CHRISTOS T
IPC: G05D1/00
Filed: 1990-12-10
Abstract: Systems and methods for positioning and navigating an autonomous vehicle (102, 310) allow the vehicle (102, 310) to travel between locations. A first position estimate (112) of the vehicle (102, 310) is derived from satellites (132-170, 200-206) of a global positioning system (100A) and/or a pseudolite(s) (105). The pseudolite(s) (105) may be used exclusively when the satellites (132-170, 200-206) are not in view of the vehicle (102, 310). A second position estimate (114) is derived from an inertial reference unit (904) and/or a vehicle odometer (902). The first and second position estimates are combined and filtered to derive a third position estimate (118). Navigation of the vehicle (102, 310) is obtained using the position information (414), obstacle detection and avoidance data (416), and on board vehicle data (908, 910).
Patent CA-2073774-A1 (CA)
Inventor: WHELAN RICHARD H
IPC: A23G9/34
Filed: 1991-01-28
Abstract: Low calorie frozen desserts, in particular ice cream-like products, having a smooth, creamy, nongritty mouthfeel are can be produced. These frozen desserts contain fat that contains from about 30 to 100% of certain edible, wholly or partially nondigestible intermediate melting polyol polyesters, milk solids other than fat, sweetener, oil-in-water emulsifier, a flavoring substance, and water. The fat is substantially homogeneously dispersed in the aqueous phase as emulsified fat particles having an average particle size of about 5 microns or less. These frozen desserts are obtained by a process which initially involves the formation of a preemulsion by homogenizing a mixture which consists essentially of these intermediate melting polyol polyesters and only a portion of the other dessert ingredients. This preemulsion is then combined with the remaining dessert ingredients, homogenized, pasteurized, and at least partially frozen to provide the frozen desserts.
Patent CA-2075549-A1 (CA)
Title: A promoter screening vector, streptomyces promoters found therewith, and the isolation and use thereof
Inventor: LABES GABRIELE
IPC: C12N15/70
Filed: 1992-08-07
Abstract: The invention relates to a promoter screening vector, to methods for the identification and isolation of streptomyces promoters using the screening vector, and to the isolated promoters themselves, preferably the pS1 and p14 promoters of the S. ghanaensis phage I19 which are described hereinafter.
Patent CA-2077455-A1 (CA)
Title: Halogen exchange fluorination
Inventor: FERNANDEZ RICHARD E
IPC: C07C19/08
Filed: 1991-01-29
Abstract: A process for halogen exchange fluorination by contacting a solid composition of alkali metal fluoride with a gaseous halocarbon having a replaceable halogen other than fluorine to produce a fluorinated hydrocarbon having at least one more fluorine than the starting halocarbon and, optionally, regenerating the alkali metal fluoride with HF, in the feed.
Patent CA-2078169-A1 (CA)
Inventor: YAMAMOTO TAKEHISA
IPC: C04B35/597
Filed: 1992-09-14
Abstract: A silicon nitride sintered body comprising .alpha.-silicon nitride including .alpha.'-sialon and .beta.'-sialon including .beta.-silicon nitride in which the content of the .alpha.-silicon nitride including .alpha.'-sialon in the surface part thereof is less than its content in the inner part thereof.  The silicon nitride sintered body is excellent in mechanical strength at ordinary temperature, productivity and cost efficiency.