baber/WOPTO huggingface dataset:
Patent CA-2213936-C (CA)
Inventor: SUGIYAMA KOUJU
IPC: D21H11/16
Filed: 1997-08-26
Granted: 2002-01-29
Abstract: An inorganic porous crystals-hydrophilic macromolecule composite comprising a hydrophilic macromolecular substrate containing the inorganic porous crystals in its inner matrix, production method thereof and use thereof.  The present invention affords an inorganic porous crystals-hydrophilic macromolecule composite comprising the inorganic porous crystals held in the inner matrix of the hydrophilic macromolecular substrate.  This composite is particularly superior in adsorption of metal ion, specifically silver and copper ions, and the metal-holding inorganic porous crystals-hydrophilic macromolecule composite showed noticeably strong adsorption of hydrogen sulfide and the like, so that it can be used as a deodorizer, antimicrobial material and freshness retention material for fruits and vegetables.
Patent CA-2217457-C (CA)
Title: A method for processing gold-bearing sulfide ores involving preparation of a sulfide concentrate
Inventor: SIMMONS GARY L
IPC: B03D1/00
Filed: 1996-03-22
Granted: 2004-02-03
Abstract: Provided is a method for processing a gold-bearing sulfide ore (102) which involves maintaining the ore in a substantially oxygen-free environment, preferably beginning with comminution of the ore and ending when a desired final concentrate (116), enriched in sulfide minerals, is obtained by flotation. In one embodiment, nitrogen gas (110) is used to substantially prevent contact between the ore and air during comminution (104) of the ore and during flotation (112) operations. It is believed that oxygen gas present in air detrimentally affects the recovery of sulfide minerals in a flotation concentrate through surface oxidation of sulfide mineral particles. The use of a gas such as nitrogen can significantly reduce the potential for such surface oxidation. Additionally, gases separated from an oxygen plant may be beneficially used, with an oxygen gas stream being used, for example, for pressure oxidation of sulfide mineral materials, and with a nitrogen gas stream being used in comminution and/or flotation operations, resulting in advantageous use of a nitrogen gas by-product stream which has previously been vented to the atmosphere as waste.
Patent CA-2227097-C (CA)
Inventor: LYE WILLIAM MICHAEL
IPC: H03K5/133
Filed: 1998-01-16
Granted: 2001-01-09
Abstract: A delay cell for use in binary delay line which includes a delay circuit having N outputs where N ~ 2, each delay circuit coupled to an input through N-1 serially connected. unit cells. For each output there are P unit cells having a unit delay of t P0 and N-1-P unit cells having a unit delay of t P1. The N outputs are ordered such that each output other than the first is delayed with respect to an immediately preceding output by t P1-t P0, and P goes in succession from N-1 to 0 in unit steps. Each value of P corresponds to only one of the N outputs.
Patent CA-2232414-C (CA)
Inventor: ALARY JEAN-ANDRE
IPC: C04B35/111
Filed: 1996-10-15
Granted: 2004-10-05
Abstract: PCT No. PCT/FR96/01609 Sec. 371 Date Sep. 22, 1998 Sec. 102(e) Date Sep. 22, 1998 PCT Filed Oct. 15, 1996 PCT Pub. No. WO97/14759 PCT Pub. Date Apr. 24, 1997Alumina-based abrasive grains having a skin constituted by a mixture of finely dispersed aluminum hydrate and sodium silicate, and a process for the production of such grains consisting of (a) preparing a gel by mixing a solution of sodium silicate and a colloidal solution of aluminum hydrate in acid medium, (b) coating the abrasive grains with the gel in an amount of 0.1 to 5 percent weight, and (c) subjecting the coated grains to a drying treatment at a temperature of between 100 and 500 DEG  C. The grains according to the invention are used for the manufacture of cloths and abrasive paper and also grinding wheels.
Patent CA-2233722-C (CA)
Title: Heat pumps
Inventor: USELTON ROBERT BROWNLEE
IPC: F25B15/06
Filed: 1996-10-11
Granted: 2007-05-08
Abstract: A rotary heat pump (10) comprises a vapour generator (20), a condenser (24/34), an evaporator (42) and an absorber (40) interconnected to provide cyclic fluid flow paths for a volatile fluid component and an absorbent fluid there for. To allow operation of the pump close to the crystallisation boundary the pump includes crystallisation control means which cause the temperature of the fluid in the region prone to crystallisation to be raised when the onset of crystallisation is detected. For example the pressure increase upstream of a crystallisation site may cause warm fluid to be diverted directly or indirectly to increase the fluid temperature at the crystallisation site. The specification also describes features for controlling the absorbent mixture flow rate; for controlling the concentration thereof; for damping a scoop pump; for assuming flow onto the generator face; for pressure relief and extended operation of the pump; to novel heat exchangers; to metal compositions for the heat pump, and to hydrogen getters for use in heat pumps.
Patent CA-2238592-C (CA)
Title: Footwear with hydroelectric generator assembly
Inventor: KOMARECHKA ROBERT
IPC: A43B13/18
Filed: 1998-05-26
Granted: 2005-07-05
Abstract: The present invention provides a hydroelectric generator assembly for use within footwear, comprising a first compressible, fluid-filled sac for placement in a heel section of the footwear, the first sac having an inlet and an outlet; a second compressible, fluid-filled sac for placement in a front section of the footwear, the second sac having an inlet and an outlet; a hydroelectric generator module in fluid communication with the outlet of the first sac and the inlet of the second sac; a fluid conduit extending between the outlet of the second sac and the inlet of the first sac, wherein, upon the wearer of said footwear walking, said first sac is compressed thereby causing flow of fluid from said first sac, via said generator to said second sac, resulting in the generation of electricity, and upon compression of said second sac, fluid flows along said fluid conduit to said first sac.
Patent CA-2243253-C (CA)
Inventor: PELLERIN ERIC
IPC: H05K3/28
Filed: 1998-07-15
Granted: 2001-03-20
Abstract: Known organic solderability preservatives (OSP) contain an azole compound and are applied on a copper surface from an acidic solution. The OSPs are not visible to the naked eye when applied. A number of dyes compatible with the OSP solution and not interfering with solderability has been identified. The composition containing such a dye can produce a layer which is visible to the naked eye when applied even in a thin layer. The suitable dyes contain a cationic imine group having the general formula <see Fig. 1>     where X- is an anion such as chloride, iodide, sulphate, etc., or an organically bonded anionic group such as sulphonate.
Patent CA-2246830-C (CA)
Title: Communication control method and apparatus, and communication system
Inventor: SHIMURA AKIHIRO
IPC: H04L12/64
Filed: 1998-09-08
Granted: 2002-07-30
Abstract: A  printer  has  a  queue  for  queuing  a  queued execution  command,  an  immediate  execution  agent  for executing a write command, and a queued execution agent for executing a read command.   The immediate execution agent immediately executes the received write command, and writes data in a host.   The queued execution agent picks up a read command from the queue, and reads out data from the host.   The host appends a data transfer request from the printer to a queue,  issues a write command  to  the  printer  on  the  basis  of  that data transfer  request,  and  issues  a  read  command  to  the printer  on  the  basis  of  a  print  data  transmission request or the like from an application.   Independent full-duplex channels can be provided in two directions.   Also, a write command can be immediately processed.
Patent CA-2248975-C (CA)
Inventor: DE MOREIRA HORTA RONALDO
IPC: C01G23/00
Filed: 1998-10-19
Granted: 2006-09-19
Abstract: The present invention relates to a process for concentrating highly impure titanium ore, such as anatase, with the main purpose of obtaining a final concentrate having a chemical composition similar to that of ilmenite. The process is based on the use of the following sequence of operations for the beneficiation of titanium ores: disintegration, screening, crushing, classification, low intensity magnetic separation, attrition and slimes removal, calcinations in the presence of sodium carbonate (Na2CO3) and/or potassium carbonate (K2CO3), comminution of the calcinations to a partied size below 1 mm, leaching in alkaline medium (pH in excess of 10) followed by acid leaching, The final concentrate, which is rich in titanium and iron and has a low content of impurities, is the intermediate raw material for the process of producing titanium slag.
Patent CA-2250127-C (CA)
Title: Universal telecommunications services account
Inventor: MARKOWITZ ROBERT EDWARD
IPC: H04M15/00
Filed: 1998-10-13
Granted: 2000-12-19
Abstract: A method and a system for accumulating charges for telecommunications services used during a calling card call, whether the calling card is periodically billed or prepaid. According to the invention, call information detail information, such as a user identification, a beginning time of the call, and setup parameters of the call, is received for a calling-card call. Services rate information is received for telecommunications services used during the calling-card call. A depletion rate of an available funds account associated with the calling-card call is then determined in real time, and the available funds account is depleted at the determined depletion rate during the calling-card call, also in real time.
Patent CA-2252154-C (CA)
Title: Ink, ink container, ink set, ink jet printing apparatus, and ink jet printing method
Inventor: EGUCHI TAKEO
IPC: B41J2/21
Filed: 1998-10-28
Granted: 2002-09-10
Abstract: An ink of the present invention has a dye and a pigment.  The pigment is a self-dispersant type pigment and an anionic dye in which at least one anionic group is bound on a surface of the pigment directly or through another atomic group and having a Ka value of less than 1 ml~m-2~msec-1/2 according to a Bristow method.  An image having an excellent image quality is formed by using such an ink in the process of ink jet recording.
Patent CA-2254656-C (CA)
Inventor: HOMMA HIDESHIGE
IPC: F16L55/105
Filed: 1998-11-23
Granted: 2004-07-06
Abstract: The invention relates to an existing pipe cut-off method and slitting method, by which an existing pipe made of cast iron and steel can be cut off. With a cut-off method according to the invention, first, a part of an existing pipe 1 is enclosed and sealed up by a seal-up housing 2 in an airtight state, a cutting tool 30 having a plurality of blades 30c is accommodated in the corresponding seal-up housing in a state the cutting tool is attached to the abovementioned seal-up housing 2. Next, the cutting tool 30 is fed toward the center of the abovementioned existing pipe 1 while slitting the existing pipe 1 by rotating the cutting tool 30 by power of a prime mover, and the abovementioned existing pipe 1 is cut off by the cutting tool 30 by turning the abovementioned seal-up housing 2 in the circumferential direction R of the existing pipe 1.
Patent CA-2261628-C (CA)
Title: Process for preparing 3-pyrroline-2-carboxylic acid derivatives
Inventor: SEITZ WERNER
IPC: C12P17/04
Filed: 1997-07-14
Granted: 2008-04-22
Abstract: A process is disclosed for preparing 3-pyrroline-2-carboxylic acid derivativ es of formula (I), in which R1 stands for H, C1-C6-alkyl, benzyl, benzyl substituted at the phenyl radical, allyloxycarbonyl, C1-C6- alkyloxycarbonyl, benzyloxycarbonyl, in which the benzyl radical can be substituted by OCH3 radicals, or for C1-C4-alkylcarbonyl; or R1 stand s for an amino acid radical which can be alkylated or acylated at the nitrogen and is linked by the C-terminal; and R2 stands for OH, C1-C4 - alkyloxy, benzyloxy or an N3R4 group, in which R3 and R4 represent independently from each other H, C1-C4-alkyl, benzyl, phenyl or pyridyl, in which the aromatic compounds in R3 and R4 can be substituted by up to three identical or different substituents selected from the group composed of methyl, methoxy, hydroxy, cyano or halogen. According to this process, the sulphonic acid radical is eliminated by means of a base from a compound having the formula (II), in which R1 and R2 have the above meanings and R5 stands for C1-C6-alkyl, benzy l, trifluoromethyl, naphthyl or phenyl optionally substituted by radicals from the group composed of methyl, nitro and halogen.
Patent CA-2264581-C (CA)
Title: Characterising dna
Inventor: SCHMIDT GUNTER
IPC: C12Q1/6837
Filed: 1997-09-05
Granted: 2003-11-11
Abstract: A method for characterising cDNA, which comprises: (a) cutting a sample comprising a population of one or more cDNAs or isolated fragments thereof, each having a strand complementary to the 3' poly-A terminus of an mRNA and bearing a tail, with a first sampling endonuclease at a first sampling site of known displacement from a reference site proximal to the tail to generate from each cDNA or isolated fragment thereof a first and second sub-fragment, each comprising a sticky end sequence of predetermined length and unknown sequence, the first sub-fragment bearing the tail; (b) sorting either the first or second sub-fragments into sub-populations according to their sticky end sequence and recording the sticky end sequence of each sub-population as the first sticky end; (c) cutting the sub-fragments in each sub-population with a second sampling endonuclease, which is the same as or different from the first sampling endonuclease, at a second sampling site of known displacement from the first sampling site to generate from each sub-fragment a further sub-fragment comprising a second sticky end sequence of predetermined length and unknown sequence; and (d) determining each second sticky end sequence; wherein the aggregate length of the first and second sticky end sequences of each sub-fragment is from 6 to 10; and wherein the sequences and relative positions of the reference site and first and second sticky ends characterise the or each cDNA.
Patent CA-2265089-C (CA)
Inventor: MIHARA KANJI
IPC: H04N19/40
Filed: 1999-03-05
Granted: 2007-07-10
Abstract: The present invention provides a transcoder for changing a GOP structure and the bit rate of an encoded bitstream obtained as a result of an encoding process based on MPEG standards. According to the transcoder provided by the present invention, encoding parameters generated in a past encoding process can be transmitted to the MPEG encoder which performs a present encoding process as a history information. And optimum encoding parameters in commensurate with the present encoding process are selected from the transmitted encoding parameters, and the selected encoding parameters are reused in the present encoding process. As a result, the picture quality does not deteriorate even if decoding and encoding processes are carried out repeatedly.
Patent CA-2265735-C (CA)
Title: Recipient a remplissage variable pour produit cosmetique
Inventor: FATTORI JOSEPH EDWARD
IPC: A45D40/00
Filed: 1997-09-25
Granted: 2006-07-18
Abstract: Récipient (10) conçu pour contenir un produit cosmétique et possédant des pièces interchangeables, de façon à pouvoir utiliser le cylindre (17) afin qu'il contienne différents poids de remplissage. On utilise différents poids de remplissage à des moments différents, tels que des promotions, de manière à distribuer 10 à 25 % de plus du produit. La sélection d'une longueur différente efficace, soit de saillies (34) sur la surface inférieure de la partie support (28) du cosmétique, soit de saillies (44) sur la surface supérieure de la partie base (40) du récipient, permet de régler la distance du support de cosmétique au-dessus de la partie base à un retrait total. La longueur efficace est la longueur séparant la partie base et le support de cosmétique. Etant donné que l'espace entre le support de cosmétique et le sommet du cylindre sera rempli de produit pour toutes les quantités de produit, le réglage du support de cosmétique au-dessus de la partie base déterminera la quantité de remplissage. Cette technique permet de limiter le nombre de pièces pour les différents niveaux de remplissage.
Patent CA-2266169-C (CA)
Inventor: SRIDHAR SIDNEY
IPC: B63B1/10
Filed: 1999-03-17
Granted: 2004-04-06
Abstract: A transshipper for the transfer of cargo from a barge to a ship or elsewhere comprises a pair of buoyant vessels, a platform supported by the buoyant vessels in a raised position above the buoyant vessels through a plurality of vertical columns connecting the platform to the buoyant vessels. In one embodiment the buoyant vessels are provided with ballast chambers for receiving water as ballast inside the buoyant members. In another embodiment the transshipper is further provided with a lifting conveyor for raising material to be unloaded from a barge to the platform. Means is provided for raising and lowering the lifting conveyor relative to the barge.
Patent CA-2268432-C (CA)
Title: Reactive compositions containing blocked polyisocyanates and amine-functional resins
Inventor: SCHWINDT JURGEN
IPC: C08G18/58
Filed: 1999-04-09
Granted: 2009-03-31
Abstract: The present invention relates to a reactive composition containing A) an organic polyisocyanate having a number average molecular weight (excluding the blocking agent) of 168 to 25,000, wherein the isocyanate groups are reversibly blocked with a hydrocarbon resin containing phenolic OH groups, B) at least one organic polyamine having at least two primary amino groups and C) optionally a compound containing oxirane groups. The present invention also relates to the use of these reactive systems for the preparation of coatings, adhesives, sealants, embedding compounds or molded articles.
Patent CA-2283509-C (CA)
Inventor: IMANISHI TAKESHI
IPC: A61K31/7064
Filed: 1998-03-09
Granted: 2005-01-04
Abstract: An oligo- or polynucleotide analogue having one or more structures of the general formula (see formula I) where B is a pyrimidine or purine nucleic acid base, or an analogue thereof, is disclosed. The use of this analogue provides an oligonucleotide analogue antisense molecule, which is minimally hydrolyzable with an enzyme in vivo, has a high sense strand binding ability, and is easily synthesized.
Patent CA-2286727-C (CA)
Inventor: WARKENTIN A JAMES
IPC: B65G47/10
Filed: 1998-02-09
Granted: 2005-06-14
Abstract: A conveyor of product units has mounting brackets (28) extending laterally from endless chains (14, 16). The mount-ing brackets rotatably mount two spools (34, 36) having axes (30, 32) parallel tothe conveying path. Pivotally mounted off-loading elements (48) can be articulated to lift product units positioned on the conveying system for off-loading laterally from the conveyor. A laterally articulated actuator is located below the principal conveyor. The actuator includes laterally slidable slats (72) which fractionally engage the overlying rollers (34, 36).      Guides (78) move the slats laterally with the motion of the conveyor. With the lateral motion of the slats, the rollers are caused to rotate.
Patent CA-2298583-C (CA)
Inventor: HIDAKA MIKIO
IPC: H01H9/56
Filed: 1998-07-16
Granted: 2004-08-31
Abstract: A synchronous switching apparatus for detecting a source voltage of each phase to close each phase at an electrical phase angle predetermined for each phase, including switching devices 1a-1c provided one for each phase for opening and closing an impedance load, switching devices 2a-2c for closing and opening the switching devices 1a-1c for each phase, measuring transformers 5a-5c for measuring source voltages of the respective phases and phase-to-phase voltages, and phase control devices 42 each for issuing a command for energizing the impedance load at an electrical phase angle in a range predetermined for each phase, when detecting a zero point of a source voltage of each phase or a zero point of each phase-to- phase voltage.
Patent CA-2300909-C (CA)
Inventor: LEWIS MICHAEL ANTHONY
IPC: B01F27/93
Filed: 1998-08-19
Granted: 2005-11-22
Abstract: Ce dispositif mélangeur comporte un disque central entraîné par un arbre rotatif. Un certain nombre de plaques mélangeuses sont empilées au-dessus et/ou au-dessous de ce disque central. Ces plaques, qui sont parallèles au disque central, en sont séparées par un certaine distance. Chaque plaque possède une ouverture centrale dont le diamètre augmente progressivement au fur et à mesure que l'on s'éloigne du disque central et ce, afin de définir un espace coaxial avec l'arbre rotatif. Lorsque le dispositif fonctionne, le fluide est attiré dans cet espace et expulsé dans l'espace existant entre les plaques. Etant attiré, l'air se trouvant à proximité de la surface du fluide pénètre dans celui-ci qui, de ce fait, est à la fois aéré et mélangé.
Patent CA-2310581-C (CA)
Inventor: FOLLAND RICK
IPC: B65D1/00
Filed: 1998-11-09
Granted: 2009-04-21
Abstract: La présente invention concerne des compositions de polypropylène colorées ainsi qu'un procédé permettant de préparer ces dernières. La présente composition comprend un polymère de propylène nucléé avec un agent de nucléation polymère renfermant des motifs de composés vinyliques et ayant une température de cristallisation au moins supérieure de 7  DEG C à celle du polymère correspondant non nucléé, et un pigment coloré ayant un effet de nucléation sur le polymère de propylène. Le retrait de la composition varie de moins de 5 % suivant les différents pigments colorés.
Patent CA-2314541-C (CA)
Inventor: DALKO MARIA
IPC: A61Q7/00
Filed: 2000-07-05
Granted: 2006-12-12
Abstract: The use of 4,6-dimethoxy indole-2-carboxylic acid and its derivatives (I) in compositions for the treatment of the hair and scalp. The compounds used are of formula (I), their acylated forms, and their salts and mixtures. R1, R2 = H, 1-6C alkyl, (optionally substituted by OH, NHR3, SH, COOH or COOR3), 7-12C aralkyl, or CHR4R5; R3 = 1-4C alkyl; R4 and R5 = H, phenyl (optionally substituted), a 5 or 6 membered heterocycle. The preferred compound is 4,6-dimethoxy indole-2-carboxylic acid itself.
Patent CA-2316044-C (CA)
Title: Reservoir monitoring through modified casing joint
Inventor: ECKERSLEY CLIVE P
IPC: E21B47/01
Filed: 2000-08-16
Granted: 2005-06-07
Abstract: An apparatus and a method for controlling oilfield production to improve efficiency includes a remote sensing unit that is placed within a subsurface formation, an antenna structure for communicating with the remote sensing unit, a casing joint having nonconductive "windows" for allowing a internally located antenna to communicate with the remote sensing unit, and a system for obtaining subsurface formation data an d for producing the formation data to a central location for subsequent analysis. The remote sensing unit is placed sufficiently far from the wellbore to reduce or eliminate effects tha t the wellbore might have on formation data samples taken by the remote sensing unit. The remote sensing unit is an active device with the capability of responding to control comman ds by determining certain subsurface formation characteristics such as pressure or temperature, and transmitting corresponding data values to a wellbore tool. Some embodiments of the remote sensing unit include a battery within its power supply. Other embodiments include a capacitor for storing charge. In order for a communication link to be established with the remote sensing unit through a wireline tool in a cased well, a casing joint includes at least one electromagnetic window that is formed of a non-conductive materialthat will allow electromagnetic signals to pass through it. In the preferred embodiment, the electromagnetic windows are formed to substantially circumscribe the casing joint to render it largely rotationally invariant. The electromagnetic windows are formed of any rigid and durable non-conductive material including, by way of example, either ceramics or fiberglass.