baber/WOPTO huggingface dataset:
Patent CA-2037007-A1 (CA)
Title: 2,2'-bis[di-(3,5-dialkylphenyl)phosphino]-1,1'-binaphthyl and transition metal complex containing the same as ligand
Inventor: ISHIZAKI TAKEROU
IPC: B01J31/24
Filed: 1991-02-25
Abstract: A 2,2'-bis[di-(3,5-dialkylphenyl)phosphino]-1,1'-binaphthyl represented by formula (I):   (see formula I) wherein R represents a lower alkyl group, is disclosed. A transition metal complex comprising a transition metal and a 2,2'-bis[di-(3,5-dialkylphenyl)phosphino]-1,1'-binaphthyl represented by formula (I) as a ligand is also disclosed.
Patent CA-2038083-A1 (CA)
IPC: B26B13/04
Filed: 1991-03-12
Abstract: Scissors with replaceable cutting blades include a pair of handles to which cutting blades are detachable, the handles being pivotally connected to each other by a screw.  Each handle has a longitudinally extending groove in which a shank of the corresponding cutting blade is inserted, and a retaining plate is disposed so as to cross a portion of the groove.  The shank of the cutting blade inserted into the groove is supported on the handle by the retaining plate so that screws are not needed to attach the cutting blade to the handle.
Patent CA-2039331-A1 (CA)
Inventor: LIPA MANFRED
IPC: G21B1/17
Filed: 1991-03-28
Abstract: DESCRIPTIVE ABSTRACT     The heat shield according to the invention makes it possible to protect a structure from a very high thermal flux.   It is mainly constituted by tiles (2) fixed to a support structure (4) by means of a spring (8) fixed in translation with respect to a tile (2) and on which bears a locking arm (10).  The latter can be fixed to the support structure (4) by means of locking screws (30), which are accessible from the outside through locking orifices (12) in the tile (2).  The compression Or the spring (8) allows locking to take place and also a satisfactory heat exchange from the tile (2) to the support structure (4), which can be cooled by cooling medium flow ducts (14).         (Fig.1) B 10363.3 JB
Patent CA-2042029-A1 (CA)
Title: Production of 3-hydroxy-1,3,5(10)-estratrien-17-one
Inventor: BUBACK MICHAEL
IPC: C07J1/00
Filed: 1990-09-06
Abstract: ABSTRACT          A process for producing 3-hydroxy-1,3,5(10)-estratriene-17-on by the pyrolysis of 1,4-androstadiene-3,17-dion in the presence of 1,2,3,4-tetrahydronaphthaline as a hydrogen donor is described, in that one mixes 1,2,3,4-tetrahydronaphthaline that has been pre-heated to a temperature of 450-850°C in a mixing zone with a solution of 1,4-androstadiene-3,17-dion in 1,2,3,4-tetrahydronaphthaline that has been heated to a temperature of up to 300°C, then heats the mixture in a pyrolysis zone during a holding time of 0.001 to 60 seconds to a temperature of 450-700°C, and then cools the product that emerges from the pyrolysis zone, characterized in that one carries out the pyrolysis at a pressure of 3.5 x 106 to 3 x 108 Pa.
Patent CA-2045780-A1 (CA)
Title: Biocatalyst carrier for bioreactor and method of treatment with biocatalyst
Inventor: KURODA MASAO
IPC: C02F3/28
Filed: 1991-06-27
Abstract: -29-ABSTRACT A biocatalyst carrier for a bioreactor contains an absorbent material and has the effect of a microfilter. Liquid or gas is treated with the biocatalyst carrier by a method which includes causing a liquid containing a biocatalyst to contact the biocatalyst carrier containing an absorbent material having a degree of swelling of at least 2 and possessing the effect of a microfilter, thereby causing the carrier to absorb the liquid and consequently allowing the biocatalyst in the liquid to be attached to the surface of the carrier, then bringing the carrier into contact with at least one of the liquid and the gas to be treated.
Patent CA-2046166-A1 (CA)
IPC: B41F35/02
Filed: 1991-07-03
Abstract: A  dampening  system  has  a  pan  for  containing dampening fluid,  and transfer and metering rollers for bringing dampening fluid up out of the pan.  A transition roller contacts one of the transfer and metering rollers. The transition roller is movable between first and second positions.  In the first position, the transition is off of the plate cylinder and dampening fluid is applied to the plate cylinder by ink form rollers.   In the second position, the transition roller is on the plate cylinder. Another version of the dampening system has  a bridge roller between  the  transition  roller  and  a  ink  form roller, which bridge roller is movable between third and fourth positions.   In the third position,  the bridge roller  is  on  the  transition  roller.    In  the fourth position,  the bridge roller  is off of the  transition roller.    The  dampening  system  can  dampen  the  plate cylinder without the use of alcohol.  The transition roller is rotated by a separate motor so that its speed is controlled independently of the other rollers.   When the transition roller is on the plate cylinder, it can be slowed down to clean hickeys off of the plate cylinder. When the plate cylinder is clean, it can be moved off of the plate cylinder or speeded up to the same speed as the plate   cylinder.      A   controller   is   provided   to automatically adjust the amount of dampening fluid being applied to the plate cylinder by regulating the speed of the transfer and metering rollers.
Patent CA-2047162-A1 (CA)
Title: Rare earth/transition metal alloy scrap treatment method
Inventor: SCHMIDT FREDERICK A
IPC: C22B59/00
Filed: 1991-07-16
Abstract: RARE EARTH/TRANSITION METAL             ALLOY SCRAP TREATMENT METHOD     ABSTRACT OF THE DISCLOSURE           A method of treating rare earth/transition metal (e.g., iron) alloy scrap involves dissolving the scrap in an aqueous mineral acid solution, reacting the solution of dissolved rare earth metal and transition metal with sufficient excess HF acid to selectively precipitate the rare earth fluoride while retaining the transition metal (e.g., iron) in solution, and then separating the precipitated rare earth fluoride from the solution.  The separated rare earth fluoride is dried to render it suitable for use as a reactant salt feedstock in the thermite reduction process or in other metallothermic reduction processes.
Patent CA-2048557-A1 (CA)
Title: Dilatation catheter
Inventor: HOFMANN EUGEN
IPC: A61M25/00
Filed: 1991-08-07
Abstract: The dilatation catheter has a shaft which consists of two separately produced shaft portions. Both portions have a first lumen for a guide wire and a second lumen for a pressure liquid. The two portions overlap at a connection point and are preferably welded to one another at this point. The proximal portion consists of two coaxial tube portions and the distal portion consists of an extruded two-lumen tube piece. The proximal portion is stiffer than the distal portion, which permits an optimal adaptation to a non-straight course of a blood vessel. The dilatation catheter according to the invention is particularly suitable for the treatment of arterial occlusions, which are situated in or downstream of a vessel curve.
Patent CA-2050485-A1 (CA)
Title: Hyperthermostable .alpha.-amylase
Inventor: ANTRANIKIAN GARABED
IPC: C12N9/28
Filed: 1990-03-19
Abstract: Novel hyperthermostable .alpha.-amylases are provided. The .alpha.-amylases are obtainable from strains of Pyrococcus. These novel enzymes are of great interest for industrial applications, e.g.  for use in starch liquefaction processes.
Patent CA-2051487-A1 (CA)
Title: Alkoxylation of active hydrogen-containing compounds
Inventor: KING STEPHEN W
IPC: B01J23/00
Filed: 1991-09-16
Abstract: ALKOXYLATION OF ACTIVE HYDROGEN-CONTAINING COMPOUNDS                        Abstract This invention relates to a process for the alkoxylation of an active hydrogen-containing compound comprising contacting the active hydrogen-containing compound with an alkylene carbonate in the presence of a mixed metal oxide catalyst under conditions effective to alkoxylate the active hydrogen-containing compound.
Patent CA-2052599-A1 (CA)
Inventor: HINRICHS KARL
IPC: G06F17/17
Filed: 1991-10-01
Abstract: A processor is described for monitoring a sensor whose output signal follows a nonlinear curve in response to a  linear  change  in  a  monitored  phenomenon.   The processor  concerts  the  sensor  signal  to  a  linear output proportional or equal to the phenomenon being monitored.   The  processor includes  a memory  for storing a table which includes a starting data point value D on the curve,  a starting slope value S to another data point on the curve, a starting curvature value S' for a succession of the data points on the curve and a plurality of rate of change of curvature values S'' for the curve.  The values of S'' for a first region of the curve are calculated based on an initial output  signal  interval  between  data  point values.  The values of S'' for each succeeding region of the curve are based on increasing, by a preselected factor, the signal interval between data point values. The  processor  includes  a calculation  device  for computing repeated additions of the S,  S',  and S'' values.  An addition occurs when the sensor output signal  rises above a predetermined signal  interval value  between  data  points.   The  processor  also includes   a   controller   which   increases,   by   a preselected factor,  the predetermined sensor signal interval value each time the output signal enters a succeeding region of the curve.   Thus,  as the data points move up  the curve,  they become increasingly farther apart, but accuracy does not suffer as such data points  reside  on  the  more  regular  (steady curvature, for instance)  regions of the curve.  Data storage requirements are thus minimized.
Patent CA-2053331-A1 (CA)
Title: Device for the optically conductive connection of two optical waveguides
Inventor: STAUDTE BERND
IPC: G02B6/38
Filed: 1991-10-11
Abstract: ABSTRACT OF THE DISCLOSURE           The present invention relates to a device for the optically conductive connection of two optical waveguides. The device comprises a sleeve body overlapping the ends of the optical waveguides, which sleeve body is twistable and plastically deformable.   In order to achieve a simple construction and handling of the device,  the invention provides that the sleeve body is composed of an outer sleeve jacket with a continuous longitudinal slot.   The sleeve jacket is twistable and plastically deformable.  On the inner side of the sleeve jacket, there are support crosspieces forming circular segments in cross section, which enclose a central through-opening for receiving the ends of the optical waveguides.
Patent CA-2054715-A1 (CA)
Title: Process for the preparation of n-protected dialkyl(2s,3s)-3-ethylaspartates
Inventor: HEYWANG ULRICH
IPC: C07K5/06
Filed: 1991-02-22
Abstract: The invention relates to a process for the preparation of N-protected dialkyl (2S,3S)-3-ethyl-aspartates or their salts from unpurified (2S,3S)-3-ethylaspartic acid obtainable by enzymatic amination of ethylfumaric acid.
Patent CA-2058006-A1 (CA)
Title: Bitumen emulsion, process for its preparation breaking additive for use therein and the use of said bitumen emulsion
Inventor: REDELIUS PER
IPC: C08L95/00
Filed: 1991-12-18
Abstract: A bitumen emulsion of anionic or cationic type having a breaking additive is disclosed. The breaking addi-tive comprises a water-in-oil emulsion wherein an aqueous solution of a substance which has a neutrali-zing effect upon the bitumen emulsion when added there-to is dispersed in an oil continuous phase.      The bitumen emulsion is prepared by a) preparing an aqueous solution of a neutralizing substance, b) emulsifying the aqueous solution of a) in oil to form an invert emulsion, and c) mixing the invert emulsion of b) into a bitumen emulsion of anionic or cationic type.        The bitumen emulsion can be used as a bind er in road building or road maintenance or in construction work.
Patent CA-2058201-A1 (CA)
Title: Propylene oligomerization over silica modified zeolites
Inventor: CHANG CLARENCE D
IPC: C07B61/00
Filed: 1991-12-20
Abstract: ABSTRACT       PROPYLENE OLIGOMERIZATION  OVER SILICA MODIFIED ZEOLITES           Oligomerizing propylene by contacting propylene with silica modified zeolites.  The modification of the zeolite with silica results in a product which is enriched in hydrocarbons falling within the boiling range of jet fuel and diesel fuel.  The zeolite may be ZSM-5, which may be modified by sorbing methylhydrogen-silicone into the pores of the zeolite followed by calcination to convert the sorbed methylhydrogen-silicone into amorphous silica.
Patent CA-2060115-A1 (CA)
Inventor: JACOB JEAN-BAPTISTE
IPC: H04B10/27
Filed: 1992-01-28
Abstract: Centre satellite photonique L'invention concerne un centre satellite photonique, pour raccorder a un réseau de télécommuication des terminaux d'abonné émettant et recevant des données sous la forme de cellules, de longueur fixe, par un multiplexage temporel asynchrone, comportant: - un réseau de connexion (5) relié à un central de rattachement, - une unité de commande (8) reliée au réseau de connexion (5); - une pluralité de concentrateurs (2, 7) reliés au réseau de connexion (5); - des circuits d'accès d'abonné (1, 6) reliés respectivement aux terminaux d'abonné et aux concentrateurs (2, 7); La structure du centre satellite selon l'invention est optimisée pour une meilleure utilisation des composants photoniques. Chaque concentrateur (2, 7) comporte des moyens pour multiplexer spectralement des cellules reçues en provenance de terminaux d'abonné; et comporte, en aval de ces derniers, des moyens pour mettre en phase les cellules multiplexées, par rapport à une horloge locale. Le réseau de connexion (5) comporte : - des moyens pour traduire une étiquette de circuit virtuel ou de faisceau virtuel, que comporte chaque cellule émise ou reçue par le centre satellite, et lui adjoindre une étiquette de routage pour router cette cellule dans ce centre satellite; - des moins pour réaliser une fonction police. Application aux réseaux de télécommunication à multiplexage temporel asynchrone. FIGURE A PUBLIER : Figure 1.
Patent CA-2061219-A1 (CA)
Inventor: IMRAN MIR A
IPC: A61B5/296
Filed: 1992-02-14
Abstract: ABSTRACT           Endocardial mapping and/or ablation system for introduction into a chamber of the heart formed by a wall by passage through a lumen leading to the chamber in the heart having blood therein comprising a cathater probe with proximal and distal extremities and having an elongate tubular member with at least one lumen extending therethrough extending the length thereof and with a distal extremity.  A plurality of longitudinally and radially spaced apart electrodes are provided.  An expandible device is secured to the distal extremity of the flexible elongate tubular member and is movable between a contracted position and an expanded position. The electrodes are mounted on the expandable device whereby when the expandable device is moved to the expanded position in a chamber of the heart the electrodes are moved into engagement with the wall forming the chamber of the heart in which the expandable device is disposed.  An elongate element is coupled to the expandable device for moving the expandable device between the contracted and expanded positions.  The expandable device has spaces therein through which the blood can flow when the expandable device is in an expanded position. Leads are in contact with the electrodes and extending through the flexible elongate tubular member.  Electrical apparatus is connected to the leads for performing electrical functions with respect to the electrodes.
Patent CA-2069393-A1 (CA)
Title: Method for detecting halogen gas in a liquid
Inventor: WILLIAMS WILLIAM J
IPC: G01N33/00
Filed: 1992-05-25
Abstract: ABSTRACT OF THE INVENTION           A method for discovering amounts of halogen in a liquid is provided wherein the a reservoir comprising the liquid and suspected halogen is heated to a temperature characteristic of the solubility of halogen in the liquid to provide a vapor.  After condensing, a sampling vapor is provided to from which the amount of halogen may be detected.
Patent CA-2070240-A1 (CA)
Title: Rotatable display tower for compact discs and the like
Inventor: KOEPPEL LLOYD
IPC: A47F7/14
Filed: 1992-06-02
Abstract: Abstract of the Disclosure A rotatable display tower, preferably for use as a merchandising rack for the original sale of packaged products, preferably compact discs.   The tower provides, in a relative minimum of space, a large number of compact discs to be viewed "head or  face on."   The display tower securely holds  the packages, in a tilted-back manner, yet allows the consumer to easily remove the same for purchase.     s: 17a/3712bcom.pat
Patent CA-2070446-A1 (CA)
Title: Easy opening door control device
Inventor: O'BRIEN JAMES A II
IPC: E05F15/12
Filed: 1992-06-04
Abstract: ABSTRACT:        A device for controlling swinging doors utilizing an externally powered motor to compress a spring during door opening to store energy in the spring. The motor is not used to open the door, but only to compress the spring, thereby utilizing a minimum amount of electrical energy and allowing for a very easy opening of the door. The motor acts as a generator during the closing of the door with the generated electrical energy fed back to the motor to retard rotation of the rotor, providing a brake on the closing movement of the door. The feedback circuitry includes a switch for varying the braking during the final degrees of closing movement as well as a variable setting device allowing control of braking force.     May 21, 1992 (994) c:\890\specs\p920089.pct
Patent CA-2074304-A1 (CA)
Title: Drug delivery catheter
Inventor: SCHWEICH CYRIL J JR
IPC: A61F2/958
Filed: 1992-07-21
Abstract: A drug delivery catheter with an inflatable blood flow lumen is provided. The drug delivery catheter includes a flexible tubular shaft and an inflatable balloon assembly disposed at the distal end of the shaft. The catheter is inserted into a vessel with the balloon assembly in an un-inflated form. The balloon member is positioned at the treatment site and inflated. The balloon member in an inflated form defines a region or pocket between the balloon assembly and the vessel wall which contains the drug separate from blood flow. Apertures are provided in the balloon assembly to provide the drug to the containment pocket. Blood is allowed to flow through the center of the inflated balloon assembly.
Patent CA-2076538-A1 (CA)
Inventor: TROKHAN PAUL DENNIS
IPC: D06M13/322
Filed: 1991-04-08
Abstract: A process for improving the life of papermaking belts containing a cured photosensitive polymeric resin is disclosed. The process includes the use of a resin-swelling solvent (e.g., isopropyl alcohol) to deliver an effective amount of chemical compounds capable of slowing down the degradation rate of the photosensitive polymeric resin in the papermaking belt. The solvent delivery technique makes it possible to deliver useful quantities of chemical compounds to the resin containing papermaking belts that would not normally be possible to add because of their low direct solubility in the polymeric resin and/or process incompatibility. Preferably, the chemical compounds are antioxidants (e.g., hindered phenols) which inhibit or retard oxidation of the cured resin and its ensuing degradative effects.
Patent CA-2077340-A1 (CA)
Title: Enhancement of the down-regulation of autoimmune diseases by oral administration of autoantigens
Inventor: WEINER HOWARD L
IPC: A61K38/095
Filed: 1991-03-04
Abstract: Disclosed herein are methods to prevent or treat T-cell dependent autoimmune diseases comprising the oral administration of (A) an agent selected from the group consisting of autoantigens, fragments or analogs thereof specific for the autoimmune disease, and (B) a synergist having the property of enhancing the autoimmune disease suppressive activity of the agent, in amounts effective to treat or prevent a T-cell dependent autoimmune disease. Also disclosed are pharmaceutical formulations or dosage forms for use in the methods.
Patent CA-2077734-A1 (CA)
Title: Dental filling composition
Inventor: SASAKI HIROYUKI
IPC: A61K6/884
Filed: 1992-09-08
Abstract: A dental filling composition comprising a polymerizable monomer and an inorganic filler, characterized in that the inorganic filler comprises (A) 20 to 80 % by weight of spherical inorganic oxide particles with an average particle size of from 1.0 to 5.0 µm, and (B) 80 to 20 % by weight of spherical inorganic oxide particles which have a particle size range of at least 0.05 µm and less than 1.0 µm and at least 5 % by weight of which is in a particle size range of from 0.05 to 0.2 µm. The dental filling composition may have a high content of the inorganic filler and, upon curing, has good mechanical strength, good surface glass aid smoothness, low water absorption, and transparency compared to that of natural teeth, in which smaller particles are sufficiently packed in interstices among larger particles, and smaller particles serve also for the good transparency.
Patent CA-2078932-A1 (CA)
Inventor: WIEDEMAN ROBERT A
IPC: H04W88/06
Filed: 1992-09-23
Abstract: A wireless telephone system (10) capable of servicing a roaming wireless telephone user (30) includes a satellite (22) communications system consisting of at least one orbiting satellite (22); at least one terrestrial-based gateway (12, 14, 16, 18) having access to a database (20) of users, destination codes (telephone numbers); at least one network coordinating gateway (28) within at least one satellite service area (24); a single network control center (25); and a plurality of terrestrial communications links (e.g. 101). The system (10) operates by effecting communication between a terrestrial wireless telephone end user transceiver apparatus (e.g. 501) and a terrestrial communications link (e.g. 101) via a single relay through a single satellite (22) or a succession of single relay satellites (22) wherein the relay station may be in motion relative to the end user transceiver apparatus (501) and the terrestrial communications link (101). The ground-based gateway (28) effects the ultimate decision on linking in cooperation with the network database to effect hand-off from a first orbiting satellite (22) to a second orbiting satellite (22). The single satellite (22) or preferably a constellation of satellites (22) orbiting near the earth need only translate signals from the gateways (12, 14, 16, 18) to the users (30) and from the users (30) to the gateways (12, 14, 16, 18), without satellite-based control.
Patent CA-2078976-A1 (CA)
Inventor: CLARK BRIAN L
IPC: A01K15/02
Filed: 1992-09-23
Abstract: ABSTRACT The  present  invention  provides  an  electrically chargeable garment having a pair of leggings having an outer layer with a pair of closely spaced electrical terminals of opposite polarity disposed on the outer surface of the outer layer.   There is also provided means for attaching the leggings to a wearer and means for adjustably supporting the leggings from the wearer.
Patent CA-2082337-A1 (CA)
Title: Method and apparatus for providing secure access to a limited access system
Inventor: PEGG TINA C
IPC: G07F7/10
Filed: 1992-11-06
Abstract: Disclosed is a method and apparatus that protects user passwords and identification numbers by using dynamic and fixed cipher keys to generate one-time access codes that are recognized by an authorization center. The authorization center provides a user with a pool of user selectable algorithms that are easily remembered by a user. When access is desired the user mentally generates and subsequently enters a non-machine generated access code formed by using the selected algorithm, the password, and a dynamic variable. The authorization center also generates a corresponding access code using stored user data. If the two access codes match access is granted.