baber/WOPTO huggingface dataset:
Patent CA-2035117-A1 (CA)
Title: Calcined kaolin clay filler pigment for enhancing opacity and printing properties of newsprint and mechanical papers
Inventor: BERUBE RICHARD R
IPC: D21H11/00
Filed: 1991-01-28
Abstract: ABSTRACT           A low-abrasion calcined kaolin opacifying pigment composed of particles in the size range of about 70 to 84% by weight finer than 2 microns and having a color defined by Hunter Trisitimulus values of "L" within the range of 92 to 94, "a" within the range of +1.0 to +2.2 and "b" within the range of +6.4 to +7.5.  The pigment is produced by novel wet processing including high solids degritting of a high iron, high titania content Tertiary kaolin without conventional fractionation, bleaching and dewatering to isolate a fine particle size fraction, followed by spray drying, pulverization, calcination and repulverization.     ILM\3258
Patent CA-2038771-A1 (CA)
Inventor: FRANZ HELMUT
IPC: C03C17/00
Filed: 1991-03-21
Abstract: A method and article are disclosed wherein a glass substrate is provided with a durable non-wetting surface by treatment with a perfluoroalkyl alkyl silane and a fluorinated olefin telomer.
Patent CA-2039581-A1 (CA)
Inventor: YOUNG LYDIA J
IPC: H01J37/147
Filed: 1991-04-02
Abstract: A thermally stable magnetic deflection assembly for use in an electron or particle beam machine with several separately potted magnetic tails spaced apart and arranged in a particular vertical position on a central pipe. Non metallic, low coefficient of thermal expansion, highly thermally conductive materials are used throughout and means are provided fox maintaining the entire assembly at a desired temperature. Also disclosed is a method of making a thermally stable magnetic deflection assembly.
Patent CA-2039772-A1 (CA)
Title: Floor with slats having serrated projections interlocked and anchored
Inventor: RHEAUME REJEAN
IPC: E04F19/10
Filed: 1991-04-04
Abstract: ABSTRACT     A floor comprising:  a plurality of juxtaposed floor slats and at least a pair of said slats having toothed projection. Each floor slat and including the slats having toothed projection have a front surface,  and opposite,  a rear surface.  The rear surface has at least one projection running lengthwise of the floor slat and extending substantially perpendicularly therefrom. The projection defines a pair of lateral surfaces running lengthwise of the slat. The lateral surfaces of said projection is serrated or provided with anchoring devices. The slats having toothed projection define along said projection grooves that extend across the projection, the grooves are complementary to the projection  and have  about  the  same  thickness  as  the thickness of the projection of the floor slat,  whereby the toothed slats are placed parallel and upside down, at some distance one from the other, to receive the plurality of juxtaposed floor slats,  their projection provided with serrated or anchoring devices anchoring the wall of said toothed projection adjacent said grooves.
Patent CA-2043565-A1 (CA)
Title: Enzyme and dna coding therefor
Inventor: IWASAKI YASUNO
IPC: C12N9/02
Filed: 1991-05-30
Abstract: ABSTRACT         Novel Enzyme and DNA coding therefor The invention concerns a peptidylhydroxyglycine N-C lyase (PHL) catalyzing the reaction R-GlyOH ? R-NH2 wherein R represents a peptide residue, and GlyOH represents an .alpha.-hydroxyglycine residue linked to the C-terminus of said peptide R by an amide bond, a recombinant DNA molecule coding for a PHL a method for the preparation of such a recombinant DNAmolecule, processes for the preparation of PHL from a natural source or by means of the said recombinant DNA molecule, and the use of PHL for the preparation of an amidated peptide R-NH2.
Patent CA-2043881-A1 (CA)
Inventor: CAPEL ANTOINE
IPC: H03F3/38
Filed: 1991-06-05
Abstract: : Dispositif de régulation d'un paramètre par une structure bidirectionnelle en courant. L'invention concerne un dispositif de régulation d'un paramètre par unestructure bidirectionnelle en courant, permettant le transfert d'énergie d'un réseau d'entrée (10) vers un réseau de sortie (11) au travers de cette structure à découpage bidirectionnel en courant (12), le courant circulant dans cette structure étant de forme triangulaire. Application notamment au domaine spatial. FIGURE A PUBLIER : Fig. 1
Patent CA-2044158-A1 (CA)
Title: Container having improved closure
Inventor: FINLEY MICHAEL J
IPC: B65D41/04
Filed: 1990-10-30
Abstract: A closure for a container having a neck portion (14) is provided, the closure including a gasket (30) on a shoulder portion (24) of the neck (14) against which an inner contact ring (45) formed on a lower rim (43) of a closure cap (16) seals. The closure cap (16) includes a sealing lip (50) extending downwardly from a top wall (38) which sealing lip (50) forms a seal against an interior surface (11) of the neck portion (14). An outer ring member (42) which extends downwardly from the lower rim (43) of the closure cap (16) a distance greater than the inner contact ring (45) and which is adapted to surround the gasket (30) can also be provided.
Patent CA-2049441-A1 (CA)
Title: Method of coating glass
Inventor: TERNEU ROBERT
IPC: C03C17/34
Filed: 1991-08-19
Abstract: In methods of forming a coating comprising a pyrolytically formed oxide layer on a travelling hot glass substrate, the substrate is contacted with coating precursor material in the presence of oxygen.      In order to prevent interaction between coating precursor material used for applying an upper coating stratum, and/or to facilitate modification of the optical or other properties of the coating as a whole, an oxide substratum of said coating ("the undercoat") is pyrolytically formed in an incompletely oxidized state by contacting the substrate in an undercoating chamber with undercoat precursor material in the presence of oxygen in insufficient quantity for full oxidation of the undercoat material on the substrate and in that such undercoat is overcoated with an upper coating layer while it is still in an incompletely oxidized state, and while the substrate is still hot, thereby to preserve such undercoat in an incompletely oxidized state.
Patent CA-2050522-A1 (CA)
Title: Metallic core gasket
Inventor: BELTER JEROME G
IPC: F16J15/12
Filed: 1991-09-03
Abstract: Title METALLIC CORE GASKET Abstract of the Invention An intake manifold gasket includes a soft metallic core designed for effective sealing under low bolt load applications. The gasket is formed of a malleable, ductile, non-ferrous core, preferably  of  aluminum,  and  includes  a  plurality  of  spaced apertures, each bounded by an embossment.  Laminated to at least one of a pair of  opposed planar surfaces of the core is a composition facing layer which includes aramid fibers for enhancing temperature resistance and strength.  The result is an improved gasket having greater conformability under low crush loads, yet subject to less post-compression relaxation than conventional steel core gaskets.
Patent CA-2050627-A1 (CA)
Title: Viscosity and phase separation control additives for foaming alkyl aromatic sulfonates
Inventor: DANZIK MITCHELL
IPC: C09K23/12
Filed: 1991-09-04
Abstract: ABSTRACT            A foaming surfactant concentrate useful in enhanced oil recovery with improved stability and flowability.  This concentrate comprises water, greater than 12 wt % of a C20-30 alkyl aromatic sulfonate component having an average molecular weight from about 460 to about 600, a mixture of organic additives comprising a viscosity-reducing hydrotrope and a dispersant comprising a nonionic surfactant, and optionally a polymeric nonionic surfactant.  The amount of organic additives is less than 50 wt % of the weight of the C20-30 alkyl aromatic sulfonate.
Patent CA-2052230-A1 (CA)
IPC: F22B31/00
Filed: 1991-09-25
Abstract: Dispositif de refroidissement de la paroi d'un foyer de chaudière à lit fluidisé dans une zone médiane de section droite verticale en forme générale de V inversé de jonction entre des parties inférieures en tronc de pyramide renversé au-dessus de deux soles parallèles, et une partie supérieure de section droite rectangulaire, à faces avant, et arrière parallèles à une arête du V inversé, et à faces latérales perpendiculaires à cette arête,  la paroi étant munie de tubes d'échange de chaleur parcourus par de l'eau ou une émulsion d'eau et de vapeur.  Les tubes d'échange de chaleur sont essentiellement horizontaux et disposés dans les flancs des parties inférieures en tronc de pyramide renversée dans le prolongement du V inversé, et débouchent dans des tubes tapissant les faces latérales perpendiculaires à son arête. Le dispositif peut être utilisé pour le refroidissement par circulation naturelle.
Patent CA-2061742-A1 (CA)
Inventor: OTOMO TAKAYOSHI
IPC: C08G77/48
Filed: 1992-02-24
Abstract: SILICONE RUBBER COMPOSITION                         ABSTRACT           A silicone rubber composition which contains an organopolysiloxane containing the carbinol group bonded to silicone across a divalent hydrocarbon group gives a silicone rubber, when cured, which has excellent resistance to repetitive deformation, such as bending and stretching.
Patent CA-2061745-A1 (CA)
Inventor: AKITSU YASUO
IPC: F01N3/021
Filed: 1992-02-24
Abstract: An exhaust emission control device includes a single fliter assembly composed of a pair of side plates respectively formed in an L-letter shape in cross-section and integrally assembled in a square framework having inlet and outlet openings, and a plurality of ceramic filter elements aligned in parallel within the square framework and clamped by the side plates, the filter elements each being made of porous ceramic material and having a thin-walled cellular structure of square in cross-section formed with a plurality of axially extending passages separated from each other by thin partition walls, wherein a first group of the passages are closed at their one ends in a checked pattern and opened at their other ends to introduce therein exhaust gases to be purified, while a second group of the passages are opened at their one ends to discharge purified gases therefrom and closed at their other ends in a checked pattern.
Patent CA-2061830-A1 (CA)
Title: Speech coding system
Inventor: FUNAKI KEIICHI
IPC: G10L25/90
Filed: 1992-02-25
Abstract: A speech signal coding system for coding a speech signal at a bit rate of 8 to 4 kb/s wherein the mount of calculation in fractional search of delays of an adaptive codebook is reduced significantly.  Before a fractional delay of the adaptive codebook is found, candidates of integer delay are found by an open-loop using correlation values.  A search of a fractional delay by a closed loop is performed for a search range for fractional delays which is provided by several samples of each integer delay candidate thus found using the correlation values.  The fractional delay search is realized by polyphase filtering of excitation signal in the past.  In the search, a plurality of candidates of fractional delay may be found for each integer delay candidate from the adaptive codebook.  In this instance, a fractional delay is determined decisively from the decimal delay candidates after a search of a excitation codebook.
Patent CA-2064024-A1 (CA)
Title: Nucleoside derivatives and their use as medicaments
Inventor: SEELA FRANK
IPC: C12Q1/68
Filed: 1990-04-23
Abstract: 2064024 9101325 PCTABS00003 Derivatives of nucleosides and nucleotides, process for their manufacture, and use of said nucleoside derivatives as medicaments and their use in the sequencing of nucleic acids. The invention concerns new derivatives of nucleosides having the general formula (I) in which Ba is an indolyl (A), benzimidazolyl (B), pyrrolopyridinyl (C), imidazopyridinyl (D), triazolopyrimidinyl (E), imidazotriazinyl (F) or imidazopyrimidinyl (G) group substituted by R1, R2 and R3, and R1, R2 and R3, which may be identical or different are hydrogen, halogen, C1-C7-alkyl, C2-C7-alkenyl, hydroxy, mercapto, C1-C7-alkylthio, C1-C7-alkyloxy, C2-C7 alkenyloxy, Ar-C1-C5-alkyl, Ar-C2-C5-alkenyl, Ar-C1-C5 alkyloxy, Ar-C2-C5 alkenyloxy, aryloxy, nitro, amino-C1-C7-alkyl, C1-C7-alkylamino-C1-C7-alkyl, Di-C1-C7-alkylamino-C1-C7-alkyl, amino groups, a substituted amino group -NHR4, or -N(R4)2, or an imino group -N=CH-R4, and R4 has the meaning given in the description; R5, R6, R7 and R8 are each hydrogen or one or two of the residues R5, R6, R7 and R8 are a hydroxy, halogen, cyano, azido or a substituted amino-NHR4 or N(R4)2 group, or R5 and R7 together can be a further bond between C-2' and C-3'; and Y is hydrogen or a C1-C7 alkyl carbonyl, monophosphate, diphosphate or triphosphate group, where ''aryl'' represents a phenyl or naphthyl group and ''hetaryl'' represents a furanyl, thienyl or pyridyl group, as well as their possible anomers, N7-or N9-regioisomers (purine nomenclature), tautomers and salts, as well as nucleic acids, which contain compounds of formula (I) as the constituents.
Patent CA-2064277-A1 (CA)
Inventor: SMALL LAURA C
IPC: A61B17/70
Filed: 1992-03-27
Abstract: A surgical spinal fixation system (10) includes a bone bolt (11) having first end portions (13) that are adapted to be surgically implanted into a patient's spine (S) at first and second spaced apart positions and a central portion (15) of the bone bolt (11) defining a load transfer surface, the bone bolt (11) having a second upper threaded sections (14) for threadably receiving a nut (31) at a shaped, countersunk interface (32). As an alternate embodiment, a bone screw (45) provides an upper enlarged head (48) with a lower coarsely threaded (47) shank (46). A plate (17) having upper (17A) and lower (17B) surfaces and outer opposed edges is provided with an elongated slot (20) for accommodating a selected bone bolt (11) or bone screw (45). The plate edges carry fine adjustments (27,28) extending between the upper (17A) and lower (17B) surfaces of the plate (17) and a load transfer washer (35) interfaces the plate (17) and the selected bone bolt (11) or bone screw (45) for distributing load (and reducing stress) from the bone bolt (11) (or screw (45)) to the plate (17).
Patent CA-2066493-A1 (CA)
Title: Ring-closure method for 1-carbacephalosporin six-membered ring
Inventor: TERNANSKY ROBERT J
IPC: C07D463/00
Filed: 1992-04-21
Abstract: Abstract The invention provides a process for preparing 7-protected amino-4-protected carboxy-1-carbacephalosporins which includes subjecting a 3-protected-amino-4-(1-propylene oxide)-methyl(protected carboxy)-azetidin-2-one to a strong base to form a 2-hydroxycepham and thereafter dehydrating the 2-hydroxycepham to form the desired 1-carbacephalosporin. Also included in the invention are novel intermediates.
Patent CA-2066976-A1 (CA)
Title: Method of producing keto acids
Inventor: KONDO MASAHIRO
IPC: C07C227/10
Filed: 1992-04-24
Abstract: An improvement in a method of producing a keto acid having the general formula of (see formula I) wherein R1 and R2 independently represent an alkyl of 1-6 carbons or a cycloalkyl of 4-8 carbons, in an organic solvent, which comprises reacting a m-aminophenol having the general formula of (see formula II) wherein R1 and R2 are the same as above, with phthalic anhydride, the improvement comprising depositing the resultant keto acid in the solvent while effecting the reaction in a slurry.
Patent CA-2067129-A1 (CA)
Title: Process for manufacturing chemo-mechanical and/or chemo-thermal-mechanical wood pulps
Inventor: PATT RUDOLF
IPC: D21B1/16
Filed: 1990-09-25
Abstract: In a process for manufacturing chemo-mechanical and/or chemo-thermo-mechanical wood pulps, raw materials containing lignocellulose, such as wood shavings, wood chips, pre-ground wood or sawdust, are first impregnated with an aqueous alcoholic SO2 solution and then heated to a temperature between 50 and 170 ·C for a period of 1 to 300 minutes. The wood shavings are then ground to the desired degree of fineness in a defibrinating device which is known per se. The process makes it possible to achieve up to 50 %  reduction in grinding energy in comparison with known chemo-thermo-mechanical processes.
Patent CA-2068223-A1 (CA)
Title: Improved process for particle circulation in a porous medium
Inventor: CHENEVIERE PASCAL
IPC: E21B43/25
Filed: 1990-11-09
Abstract: The purpose of the invention is an improved process for injecting and transporting small-sized particles in a natural porous medium.  The process is characterized by a first phase wherein the porous medium is conditioned with an aqueous solution containing a hydrocarbonic, polymer or surfactant compound, a second involving injection of a plug of particles suspended in an aqueous solution containing at least one hydrocarbonic, polymer or surfactant compound, and a third wherein the plug of particles is propelled by a suitable aqueous medium.  The process is notably useful for establishing bacteria in a porous medium.
Patent CA-2070714-A1 (CA)
Title: ¬(arylalkylpiperidin-4-yl)methyl|-2a,3,4,5-tetrahydro-1(2h) -acenaphthylen-1-ones and related compounds (case hoe 91/s 013/hr-1223)
Inventor: KOSLEY RAYMOND W JR
IPC: C07D211/22
Filed: 1992-06-08
Abstract: ABSTRACT           There are disclosed various compounds of the formula below                 (I) where X is hydrogen, loweralkyl, loweralkoxy, hydroxy or nitro; Y is hydrogen or loweralkoxy; or alternatively, X ans Y combined together form the group -OCH2O- in which case the positions of X and Y on the benzene ring moiety must be adjacent to each other; Z is hydrogen, loweralkyl, loweralkoxy, hydroxy, halogen or nitro and n is 0 or 1, which compounds are useful for alleviating various memory dysfunction characterizied by a cholinergic deficit such as Alzheimer's disease.
Patent CA-2072306-A1 (CA)
Title: Carbonaceous composition for fuel elements of smoking articles
Inventor: RIGGS DENNIS M
IPC: A24D1/22
Filed: 1992-06-25
Abstract: It has been found that the addition of specific levels of sodium, advantageously in the form of sodium carbonate, to low sodium level binder, e.g., ammonium alginate, containing carbonaceous fuel compositions results in dramatic changes in the performance of both the fuel element themselves and, cigarettes (or other smoking articles) incorporating the fuel elements.      These performance differences include variation in the yields of aerosol and/or flavorants. The addition of sodium carbonate to the fuel elements greatly improves the smolder rates and also improves puff calories, without overheating the cigarette, thereby resulting in substantial improvements in total (and puff by puff) aerosol yield.
Patent CA-2072581-A1 (CA)
Title: Method of gene transfer using retrotransposons
Inventor: HODGSON CLAGUE PITMAN
IPC: A61K39/12
Filed: 1991-10-25
Abstract: A process for the transfer and/or expression of any gene into cells, organisms or species is disclosed. The process involves isolating the gene, introducing the gene into a vector comprised of at least one retrotransposon genetic element to provide a hybrid gene. The hybrid gene is introduced into a donor cell capable of packaging and transmitting the retrotransposon to other cells, organisms or species. The hybrid gene is transferred to a recipient cell wherein the hybrid gene replicates by reverse transcription and is inserted into the recipient cell's genome. The gene is preferably expressed as RNA and/or protein, giving the phenotype of the gene.
Patent CA-2074012-A1 (CA)
IPC: F24F13/10
Filed: 1992-07-16
Abstract: AIR VENT SYSTEM            ABSTRACT     An air vent system having an inner tube slidably disposed within a liner.  A lock mechanism is mounted at one end of the inner tube.  A lock pin is disposed at one end of the liner and is constructed to engage the lock mechanism such that the air vent system can be selectively moved between an open position and a closed position.
Patent CA-2074895-A1 (CA)
Inventor: GARAPON JACQUES
IPC: C07D207/404
Filed: 1992-07-30
Abstract: Composé polyazoté, comportant deux cycles terminaux de type imide, sa préparation par des méthodes classiques de la chimie organique et son utilisation comme additif pour carburant moteur. Ce composé répond à la formule générale (I): (I) dans laquelle R1 et R2, identiques ou différents, représentent chacun un groupe hydrocarboné ayant de 1 à 120 atomes de carbone ou un groupe de formule R5-(-O-R6-)a-(-OR7-)b- dans laquelle R6 et R7, identiques ou différents, représentent chacun un groupe hydrocarboné divalent ayant de 2 à 6 atomes de carbone, R5 représente un groupe hydrocarboné monovalent ayant de 1 à 60 atomes de carbone; a est zéro ou un nombre entier de 1 à 100 et b est un nombre entier de 1 à 100; R3 est un groupe hydrocarboné divalent ayant de 2 à 60 atomes de carbone ou un groupe divalent de formule -R8-(-X-R9-)c-(-X-R10-)d-(-X-R11-)e-dans laquelle X est choisi parmi les groupes -O- et -NR12-, R12 représentant un atome d'hydrogène ou un groupe hydrocarboné ayant de 1 à 6 atomes de carbone, R8, R9, R10 cl R11, identiques ou différents, représentent chacun un groupe hydrocarboné divalent ayant de 2 à 6 atomes de carbone, c est un nombre entier de 1 à 120, d et c, identiques ou différents, sont chacun zéro ou un nombre entier de 1 à 120 et la somme c + d + e est un nombre entier de 1 à 120; R4 est un atome d'hydrogène ou un groupe hydrocarboné ayant de 1 à 200 atomes de carbone et n est un nombre de 0 à 20.
Patent CA-2075279-A1 (CA)
Title: Radio communication system
Inventor: MUPPIDI PRABHAKAR
IPC: H04M3/42
Filed: 1991-01-07
Abstract: This radio communication system (10) includes a plurality of remote base stations or callpoints (12). When an incoming call is to be directed to a cordless telephone (11), the identifying information for the cordless telephone (11), along with a call back number or ID is transmitted as by a paging signal (20) by a PABX  (14). Each of the base stations (12) includes a paging receiver for receiving the information. If the base station (12) has a line available it initiates a call to the cordless telephone. A base station (12) that locates the cordless telephone (11) would provide the connection for the call. By calling the PABX (14) utilizing the call back ID, the base station (12) can complete the call.
Patent CA-2078468-A1 (CA)
Inventor: LAGRANGE HERVE
IPC: B07C3/00
Filed: 1992-09-17
Abstract: La présente invention concerne un procédé de tri d'objets en N passes dans R réceptacles, comprenant les étapes suivantes : - enregistrement d'informations comportant N critères par objet, - classement en mémoire desdits objets dans un ordre donné, pour affecter chacun desdits objets à une destination, - calcul de la répartition desdits objets dans une N-1 -ième passe canonique pour affecter tous les objets ayant la même valeur d'un premier critère au même réceptacle, - calcul de la répartition dans une N -ième passe canonique pour affecter tous lesdits objets ayant la même valeur d'un deuxième critère au même réceptacle dans ledit ordre donné, - modification de ladite répartition de N -ième passe canonique, fournissant une répartition de N -ième passe modifiée, telle que chaque réceptacle contienne au plus P objets (P étant la contenance maximale de chaque réceptacle), - détermination du contenu de chaque réceptacle en fin d'une N-1 -ième passe provisoire agencée pour permettre ladite répartition de N-ième passe modifiée, - modification de ladite répartition de N -ième passe modifiée, fournissant une répartition de N -ième passe définitive, si le contenu d'un réceptacle de N-1 -ième passe provisoire dépasse P, l'ordre desdits objets respectant ledit ordre donné et la répartition d'une N-1 -ième passe définitive agencée pour permettre ladite répartition de N -ième passe définitive conduisant à des réceptacles contenant chacun au plus P objets, - réitération des étapes précédentes pour les N-1-ième et N-2-ième passes, et ainsi de suite jusqu'aux deux dernières passes, - tri desdits objets selon les répartitions définitives.