baber/WOPTO huggingface dataset:
Patent CA-2132320-C (CA)
Inventor: JAKKULA JUHA
IPC: C07C43/04
Filed: 1993-03-18
Granted: 1999-04-13
Abstract: The invention concerns a process and an apparatus for preparing tertiary ethers. According to the process, C4 to C6 isoolefins and possibly heavier olefins contained in the feedstock are reacted with lower aliphatic alcohols, in particular methanol or ethanol, in a catalytic distillation reactor system in order to produce the corresponding ethers. According to the invention, the reaction between the isoolefins and the alcohols is essentially carried out in at least one reactor (5-7) of the kind, which is combined with a distillation column (3) intended for product separation, by conducting at least a part of the liquid flow of the column through the reactor and returning it to a lower tray than the one from which it was taken. At least half of cation exchange resin is placed in the side reactor (5-7). In the process according to the invention, the catalyst can be rapidly changed without stopping the process. In order to improve conversion additional alcohol can be fed to at least one of the side reactors.
Patent CA-2134430-C (CA)
Title: Process for the preparation of alkyl-imidazolidone (meth)acrylate
Inventor: RIONDEL ALAIN
IPC: C07D233/04
Filed: 1994-10-26
Granted: 1999-10-12
Abstract: A compound (I) is prepared by reaction of at least one (meth)acrylate (II) with a heterocyclic alcohol (III) in the presence of at least one catalyst chosen from magnesium alkoxides (alcoholates) Mg(OR)2. <IMAGE>   R = C1-C4-alkyl. R<1> = H or CH3; A and B = straight or branched C2-C5-hydrocarbon chain; R<2> = C1-C4-alkyl.
Patent CA-2136371-C (CA)
Inventor: NODELMAN NEIL H
IPC: C08G18/79
Filed: 1994-11-22
Granted: 2005-04-26
Abstract: The present invention is directed to polyurethane moldings produced via the RIM process. These polyurethane moldings have excellent reactivity, demold properties (at a 30s demold), and good elongation and tear strength, and comprise the reaction product of an aliphatic polyisocyanate having a viscosity of less than about 20,000 mPa.cndot.s at 25°C and a NCO functionality of 2.3 to 4.0 with an isocyanate-reactive component comprising b1) a relatively high molecular weight organic compound containing at least one of the groups selected from the group consisting of hydroxy groups and amine groups; and b2) a low molecular weight chain extender selected from the group consisting of diols, triols, primary amines, secondary amines, aminoalcohols, and mixtures thereof; in the presence of a catalyst. The OH:NH ratio of the chain extender is from 1:1 to 25:1.
Patent CA-2137432-C (CA)
Title: Press section of a paper machine in which an extended-nip press is used
Inventor: LAAPOTTI JORMA
IPC: D21F3/04
Filed: 1994-12-06
Granted: 1999-09-21
Abstract: The invention concerns a press section of a paper machine, through which press section the paper web (W) is passed as a closed draw on support of a press fabric (11,28,36) and of a smooth roll face (31,39'). The first nip in the press section is an extended-nip press (NP1) through whose press zone two opposite press fabrics (11,28) that receive water have been passed. The upper press fabric in the extended-nip press (NP1) is a pick-up fabric (11), which carries the paper web (W) from the forming wire (10). In the press section, there are at least two other nips (N1,N2;NP2',NP3') that have been formed in connection with the smooth-faced (31) centre roll (30). The centre roll (30) is fitted at a level higher (H1) than the level of the extended-nip press (NP1). In the first one of the other nips (N1;      NP2'), the press fabric consists of the pick-up fabric (11), and the second other nip (N2;NP3') has a press fabric (33) of its own that receives water.      After the extended-nip press (NP1), the running direction of the paper web (W) has been turned at an angle a, which has been chosen as a ~ ~45°.
Patent CA-2138849-C (CA)
Title: Detachable hard-shell bottom for soft-sided medical kits
Inventor: FIELD BRADLEY J
IPC: A61B50/31
Filed: 1994-12-22
Granted: 1999-11-09
Abstract: A hard-shell bottom for releasable attachment to a soft-sided carrying case has a lower exterior surface comprising a fluid impermeable base platform having a lower surface and substantially vertical side surfaces contiguous to the lower surface and extending continuously around the lower surface so as to form a container having interior surfaces. The lower surface is sized to correspond in shape to the lower exterior surface of the soft-sided carrying case and the side surfaces sized to snugly fit over side portions of the lower exterior surface of the soft-sided carrying case. The releasable fasteners are attached to at least one surface of the interior surfaces for releasable mating securement to corresponding releasable fasteners attached to the lower exterior surface of the soft-sided carrying case.
Patent CA-2142262-C (CA)
Title: A multi-ply web forming apparatus
Inventor: GRAY PAUL T
IPC: D21F1/10
Filed: 1992-08-19
Granted: 1999-05-25
Abstract: A multi-ply web forming apparatus is disclosed for forming a top ply on a base ply. The former includes a looped lower forming wire (16) for receiving the base ply thereon and a top looped forming wire (18) cooperating with and disposed above the lower wire for defining therebetween a generally horizontally disposed forming section (20) having a first (22) and a second end (24). A turning bar (26) defines a curved surface (28) for guiding the lower wire. A secondary headbox (30) ejects stock towards and onto the base ply. A curved dewatering shoe (34) is disposed beneath the lower wire (16) such that a portion of water from the top ply is ejected through the top wire (18). A vacuum slot (38) collects a portion of water upwardly away from the top wire. An inverted vacuum box (40) is disposed downstream relative to the vacuum slot (38) and a plurality of dewatering blades (44-56) disposed between a curved face (42) of the vacuum box and the top wire (18) guide the top wire therepast. A plurality of dewatering foils (58-61) are disposed on the opposite side of the wire relative to the blades such that the consistency of the stock forming the top ply is increased during passage thereof through the forming section while maintaining the consistency of the top ply uniform in a "Z" direction so that crushing of the resultant web is inhibited.
Patent CA-2145441-C (CA)
Inventor: CORNET FRANCIS
IPC: B26D3/00
Filed: 1995-03-24
Granted: 2005-10-11
Abstract: A strip of resilient material is clamped uniformly across the width of the material at a first position by vertically spaced clamps which are separated to stretch a section of the material beyond the elastic limit. The stretched section of material is released and transported on a horizontal conveyor to a second position where the stretched section is cut by a cutter providing edges of reduced thickness which are suitable for overlapping other stretched edges of reduced thickness for splicing.
Patent CA-2150582-C (CA)
Inventor: ALOFS CORNELL W
IPC: G05D1/02
Filed: 1995-05-31
Granted: 1998-07-07
Abstract: A method and apparatus  for guiding a driverless vehicle along a path defined by a guide cable  carrying  a  current  in a  horizontal  road surface includes mounting a first coil, having a major coil axis,  at +45 degrees relative to the horizontal on said vehicle, mounting a second coil, having a major coil axis, at -45 degrees relative to the horizontal on said vehicle such that the axes of said first and second coils intersect, sensing both the radial and circular field vectors of the electromagnetic   field   with each coil, comparing the magnitude of the radial vector with the magnitude of the circular vector for each coil whereby the lateral position of the intersection point  of  the  axes  of  the  coils  is  determined relative to the guide cable to indicate the lateral displacement of the vehicle relative to said path, and using  the  displacement  information  in  the vehicle steering system.
Patent CA-2151779-C (CA)
Inventor: IKEDA SHIGEJI
IPC: H03H15/00
Filed: 1995-06-14
Granted: 1998-12-29
Abstract: In an adaptive filter, each of first through N-th taps belongs to either one of first through M-th tap groups.  A first generating section (31) generates a specific one of the first through the M-th tap groups.  A second generating section (32 to 34, 37, 38) generates a tap select signal in accordance with first through K-th tap gains and the specific tap group, where a positive integer K is less than a positive integer N.  By the tap select signal, a tap select section (22) connects first through K-th selected taps to a filter section (20-1 to 20-(N-1), 24-1 to 24-K, 25-1 to 25-K, 26, 27).  A control section (40, 41, 52, 53) is responsive to the tap select signal for controlling the first generating section to make the first generating section generate a renewal one of the first through the M-th tap groups as the specific tap group.
Patent CA-2153309-C (CA)
Title: Method and apparatus for displacing liquor from a slurry of particulate solid material
Inventor: URE ALAN MACPHERSON
IPC: B01D35/31
Filed: 1994-01-24
Granted: 2004-09-28
Abstract: A slurry is subjected to a filtration and washing process in order to separate the liquor from the solids. The filtration and washing process is carried out in a housing (101) enclosing an inert gaseous atmosphere which also passes through the filter cake and may be recycled, after treatment, to remove contaminants therefrom. To prevent recontamination of the filter cake as a result of the recycled gas entisining contaminant vapours within the housing (101), the gas is introduced into the housing (101) at a downstream location (152a, 166) relative to the direction of travel of the filter cake on a movable filter medium (100) and in such a way as to develop a contaminant-concentration gradient whereby the cleanest cake is contacted by gas having the lowest contaminant level.
Patent CA-2155517-C (CA)
Inventor: HEDMAN LARS
IPC: E02B5/08
Filed: 1994-01-28
Granted: 2002-05-28
Abstract: A strainer for removing particles from effluent, comprising a screen (12) with a plurality of fixed parallel aligned bars (13) and displaceable bars (14). The strainer is arranged in a plane inclined downwards into a flow of water, with the edges of said bars turned towards the flow direction of the water being stepped. The displaceable bars are interconnected in parallel to at least one package, which is operable by means of a drive mechanism  (18). The drive mechanism is located at the upper end of the strainer, above the flow of water, to bring about a closed circuitous path in the plane of the bars, said path including a vertical component of movement surpassing the step height of the bars. The drive  mechanism  (18) is connected via at least one pull means (29) to a respective link mechanism (27-29), which is located at the bottom end of the strainer in the flow of the water to support the bottom end of the displaceable  bar package (14).
Patent CA-2155960-C (CA)
Inventor: FISCHER CHRISTA MARIA
IPC: A23L27/10
Filed: 1994-02-15
Granted: 1999-07-27
Abstract: La présente invention se rapporte à une composition édulcorante naturelle comprenant: (a) du jus sucré dérivé du genre/espèce botanique Siraitia grosvenorii, S. siamensis, S. silomaradjae, S. sikkimensis, S. africana, S. borneensis, S. taiwaniana ou un mélange de ceux-ci, et (b) du sucre, ce sucre étant sélectionné parmi le fructose, le saccharose, le glucose ou des mélanges de ceux-ci; et le rapport entre le jus sucré et le sucre est d'environ 1:1 à environ 1:5. Un acide comestible et/ou un sel comestible peuvent être ajoutés à la composition afin d'en améliorer la saveur. Une boisson comprenant une dose efficace d'une préparation édulcorante et une composition édulcorante sont également revendiquées. Ces boissons sont pauvres en calories et peuvent être remplacées par des vitamines et des minéraux. Dans une autre variante les boissons peuvent comporter de 0,001 à 60 % d'un système édulcorant comprenant des glycosides terpeniques, mogroside IV, mogroside V, siamenoside I, 11-oxo-mogroside V dérivés naturellement ou des mélanges de ceux-ci, le pourcentage étant basé sur le poids de cette boisson.
Patent CA-2160375-C (CA)
Inventor: GREENWOOD CHRISTOPHER JOHN
IPC: F16H37/06
Filed: 1994-04-14
Granted: 2004-07-06
Abstract: A continuously-variable ratio transmission comprising a ratio-varying unit ("variator"), and an epicyclic unit having three outputs arranged concentrically. Two of those outputs are connected respectively in fixed ratio to opposite ends of die variator, so that as the variator ratio changes, the speed of one of these outputs always rises and that of the other falls. These two outputs are also connected by appropriate gearing and clutches to die CVT output shaft. Successive regimes of operation, so extending the overall ratio range of die CVT, are obtained by alternatively connecting each of the two epicyclic outputs to the CVT output. Ratios and other parameters are chosen so that regime changes are synchronous.
Patent CA-2161192-C (CA)
Inventor: THIBOUTOT NORMAND
IPC: E01H4/02
Filed: 1995-10-23
Granted: 1998-02-24
Abstract: The machine incorporates a front and a rear motorized units operatively connected together, and in which power is transmitted from one unit to the other so that they are both self-propelled. A snow levelling device is disposed between the two motorized units for breaking irregularities on the trail and delivering excess snow behind the rear unit. A compaction and levelling unit is placed at the rear of the rear unit. Both the snow levelling device and the compaction and levelling unit may be raised from the ground especially in case of difficulties. This arrangement does not usually become inoperative in heavy snow or on inclined surfaces.
Patent CA-2161677-C (CA)
Inventor: GREEN BARRIE EDWARD
IPC: D03D1/00
Filed: 1994-04-28
Granted: 2000-10-10
Abstract: Un filtre (19) s'utilisant dans un moule à béton (10) comprend un tissu tricoté ou tissé, au moins en partie, à partir de fils fusibles à la chaleur et possède une densité de tissu permettant que l'eau le traverse, mais empêchant le passage de matières particulaires (17). Le filtre est relié sur sa périphérique à au moins une bande non perforée continue (32) faisant partie intégrante du tissu grâce à la fusion des fils fusibles à la chaleur.
Patent CA-2163348-C (CA)
Inventor: BOYD MICHAEL R
IPC: A61P31/18
Filed: 1994-05-18
Granted: 2000-02-01
Abstract: The present invention provides novel antiviral compounds, referred to as calanolides, related compounds, and their derivatives, which may be isolated from plants, or derived from compounds from plants, of the genus Calophyllum in accordance with the present inventive method. The compounds and their derivatives may be used alone or in combination with other antiviral agents in compositions, such as pharmaceutical compositions, to inhibit the growth or replication of a virus, such as a retrovirus, in particular a human immunodeficiency virus, specifically HIV-1 or HIV-2.
Patent CA-2166963-C (CA)
Inventor: CANNON THOMAS G
IPC: G06Q20/00
Filed: 1994-07-05
Granted: 2000-01-11
Abstract: Un système de visualisation, de mise en ordre et d'impression de cartes de voeux comprend un système (68) de préparation de base de données, plusieurs systèmes (50) de mise en ordre/affichage de cartes et plusieurs systèmes (40) d'impression de cartes. Le système (68) de préparation de base de données utilise un lecteur (12) afin d'entrer des images à partir d'une pluralité de cartes (10) ou un programme de logiciel informatique, afin de créer des images s'utilisant dans des motifs de cartes. Une base de données de description de carte définit la configuration de chaque carte en termes d'images et de texte, ainsi que leurs emplacements sur la carte. Le système (68) de préparation de base de données peut également élaborer une base de données de paramètres de carte, afin de permettre à l'utilisateur de sélectionner une catégorie souhaitée de cartes. Chaque système (50) de mise en ordre/affichage de cartes a accès auxdites bases de données et à des fichiers d'images par réseau informatique, modem, par télévision câble ou par transfert de supports de mémorisation de données amovibles.
Patent CA-2168278-C (CA)
Inventor: PRAKASH AMIT
IPC: B29D30/38
Filed: 1996-01-29
Granted: 2006-08-22
Abstract: A thin gauge, fine diameter steel cord reinforced tire ply fabric 2 is disclosed which can be effectively lap spliced without detrimental effect.      The steel cord 1 has one or more filaments 9, each filament has a percent elongation of over 2.5% and tensile strength of at least (-2000D+4400 MPa) × 95%, where D is the diameter of the filament in millimeters. For passenger and lightly loaded trucks the fabric 2 is manufactured using a preferred cord 1 which is a 1+5×.18 mm wire spaced 14 ends per inch, for heavier loaded vehicles such as light trucks load rated E or greater the number of cords 1 is increased to 28 ends per inch. The fabric 2 used as a single radial ply for a pneumatic tire 20 can be spliced using a lap splice technique due to the strength and fineness of the cord 1 in combination with the very thin gauge g between the adjoining surfaces 10.
Patent CA-2169319-C (CA)
Inventor: MILLER THOMAS MICHAEL
IPC: A01N59/06
Filed: 1996-02-12
Granted: 2003-01-21
Abstract: A method for protecting concrete surfaces of sanitary sewers includes the steps of providing a concrete surface in a sanitary sewer environment; and coating the concrete surface with magnesium hydroxide or magnesium oxide.
Patent CA-2170572-C (CA)
Inventor: HELYNRANTA PEKKA
IPC: D06M101/20
Filed: 1996-02-28
Granted: 2009-12-29
Abstract: The present invention relates to a method for manufacturing an absorbent composite in a sanitary product and to an absorbent composite in a sanitary product, manufactured by means of the method. In the method, at least one liquid absorbing layer (14) is formed by means of the dry forming technique, which absorbing layer comprises natural fibres, such as wood fibres, or natural fibres and plastic fibres mixed with one another, and superabsorbent material (15), and which is bound by means of heat. According to the invention, at least one material layer (13) is dry formed on the absorbing layer (14), before the absorbing layer is bound by means of heat, from fibres crimping in connection with the binding taking place by means of heat.
Patent CA-2171927-C (CA)
Title: Encoding apparatus for hierarchically encoding image signal and decoding apparatus for decoding the image signal hierarchically encoded by the encoding apparatus
Inventor: MACHIDA YUTAKA
IPC: H04N19/46
Filed: 1996-03-15
Granted: 2000-02-22
Abstract: Important quantized coefficients of which absolute values are higher than a threshold-value are extracted from each of quantized coefficient streams into which a digital image signal is transformed, and an important quantized coefficient stream composed of the important quantized coefficients and zero-valued quantized coefficients is produced on condition that the number of important quantized coefficients and zero-valued quantized coefficients is equal to that of quantized coefficients in each quantized coefficient stream and positions of the important quantized coefficients in the important quantized coefficient stream are the same as those in a corresponding quantized coefficient stream. Also, a lesser-important quantized coefficient stream is produced by subtracting the important quantized coefficient stream from the corresponding quantized coefficient stream. High precision type error correction codes are added to each important quantized coefficient stream and are transmitted to a decoding apparatus, and low precision type error correction codes are added to each lesser-important quantized coefficient stream and are transmitted to the decoding apparatus. Therefore, an image having a superior quality can be reproduced with a high code efficiency.
Patent CA-2171930-C (CA)
Inventor: NAKANO REIKICHI
IPC: C08K7/14
Filed: 1996-03-15
Granted: 2002-01-29
Abstract: A polyvinyl chloride resin sheet which is excellent in resistance to scratch, wear and slip and hence suitable for use as flooring materials, which has a thickness of 50-500 µm; an embossed and matted surface of which roughness is 15-25 µm; and a transmittance of not less than 75%, and which comprises: (a) polyvinyl chloride; (b) a plasticizer in an amount of 5-35 parts by weight per 100 parts by weight of polyvinyl chloride; and (c) short glass fibers having a diameter of 6-12 µm and an average length of 0.2-1.0 mm in an amount of 0.5-30 parts by weight per 100 parts by weight of polyvinyl chloride.
Patent CA-2171939-C (CA)
Title: Novel method of progesterone delivery and affect thereof
Inventor: BOLOGNA WILLIAM JOSEPH
IPC: A61F13/45
Filed: 1994-09-13
Granted: 2002-01-01
Abstract: The present invention teaches that relatively low levels of serum progesterone, 1 to 6 ng/ml, may be used to prevent endometrial cancer. The vaginal delivery of progesterone using a cross-linked polycarboxylic polymer produces this low serum progesterone level while also providing the full secretory transformation of the endometrium, indicating the efficacy of the progesterone. Such low levels of serum progesterone will decrease the risk of breast cancer experienced by women undergoing hormone replacement therapy ("HRT") and minimize the potential of other undesirable progesterone associated side effects.
Patent CA-2183222-C (CA)
Inventor: LAUNIER FRANCIS A
IPC: B60M1/14
Filed: 1996-08-13
Granted: 1999-08-03
Abstract: A signal processing unit for a controller of a trolley pole switch is disclosed.  The trolley pole switch switches the path of travel that an energy collector takes through the switch at a  junction of catenaries  at which a turn catenary and a straight catenary diverge from the straight catenary. The signal processing unit includes an input stage, a detection stage, turn and straight signal demodulation stages and an output stage.  The input stage conditions modulated signals, each of which indicating a request to switch the path of travel through  the  trolley  pole  switch  to  the  desired  catenary diverging  therefrom.    The  detection  stage  generates  a validation signal if the conditioned modulated signal falls within a predetermined band.  If the turn demodulation stage receives a conditioned modulated turn signal from the input stage  and the validation  signal  from the detection  stage simultaneously,  it generates a low logic  signal.   If the straight demodulation stage receives a conditioned modulated straight signal from the input stage and the validation signal from the detection stage simultaneously, it generates a low logic signal.  If a low logic signal is received from the turn demodulation stage, the output stage energizes a turn relay thereby supplying power to a turn solenoid for switching the path of travel to the turn catenary.  If a low logic signal is received from the straight demodulation stage, the output stage energizes  a  straight  relay  thereby  supplying  power  to  a straight solenoid for switching the path of travel to the straight catenary.