baber/WOPTO huggingface dataset:
Patent CA-2026021-C (CA)
Title: Synchronization detector using path metric and branch metric values of a viterbi decoder
Inventor: NO JONG-SEON
IPC: H03M13/23
Filed: 1990-09-24
Granted: 1995-05-09
Abstract: Synchronization conditions of a Viterbi decoder are detected using the differences between minimum branch metrics and corresponding minimum path metrics.  In accordance with the invention, zero differences are monitored, non-zero differences are monitored and weighted, and the monitoring is used to detect in-synchronization or out-of-synchronization condition of the decoder.  More particularly, the differences are non-linearly mapped (F3) into a value in a first set for some differences or a value in a second set for the other differences.  The sign of a value in the first set is different from all of the signs of the values in the second set.  In one embodiment, the first set includes a single value of unity, whereas the second set includes a value corresponding to the difference.  In accordance with the method of synchronization detection, an accumulator, counter or indicator is initialized (F1) to an initial value and as the mapped values are produced in sequence, they are sequentially summed (F5) with the value of the accumulator, counter or indicator so as to continually update the sum. The value of the accumulator, counter or indicator is compared to an out-of-synchronization threshold and to an in-synchronization threshold (F6, F7).  Each time the value of the counter, accumulator or indicator reaches or exceeds the value of the out-of-synchronization threshold, an out-of-synchronization status is declared (F9) and the counter, accumulator or indicator is returned to its initialized value, and the process continues.  On the other hand, if the value of the accumulator, counter or indicator drops below the in-synchronization threshold, then an in-synchronization status is declared (F8) and the value of the counter, accumulator or indicator is clamped so that it cannot drop any further below the in-synchronization threshold.
Patent CA-2032483-C (CA)
Inventor: BARNETT DAVID G
IPC: F04B9/02
Filed: 1990-05-08
Granted: 1994-09-13
Abstract: There is described a pump comprising a motor mounted in a housing (27) having a driveshaft (25), extending therefrom and a number or separate pumping arrangements (21, 22, 23, 24) mounted lo the driveshaft (25) by means or couplings (11) cap-able of transmitting torque in one direction only.  The pumping arrangements  are contained in a second housing (22) detachably fixed relative to the motor housing (27) and capable of being separated therefrom in the axial direction of the driveshaft (25). The couplings (11) are arranged on the shaft (25) in opposite senses, so that rotation or the shaft (25) in one sense operates one pump (21) and rotation in the opposite sense operates the other pump (20). Preferably the pumps are or the peristaltic type.
Patent CA-2032689-C (CA)
Title: Catheter
Inventor: NOBUYOSHI MASAKIYO
IPC: A61M29/02
Filed: 1990-12-19
Granted: 1997-03-25
Abstract: The catheter of the present invention comprises a body portion, a distal portion and an internal lumen and at least the above body portion includes  a super-elastic metallic tube.  This catheter has a high efficiency of transmitting the pushing force given at its proximal end  (pushability) and  a  high torque  transmission  efficiency.  Furthermore, since the body portion of the catheter includes a super-elastic  metallic  tube,  the  wall  thickness  of  the  body portion can be made sufficiently thin and a catheter with a smaller diameter can be formed.
Patent CA-2032748-C (CA)
Title: Method of inhibiting the activity of human immunodeficiency virus (hiv) in vivo
Inventor: DAVIS MICHAEL H
IPC: A61K31/00
Filed: 1990-12-19
Granted: 2003-11-18
Abstract: A method for inhibiting the activity of human immunodeficiency virus (HIV) in vivo comprises administering to a human host an antimalarial drug, which is capable of exhibiting a protective effect, a curative effect, or of pre-venting transmission of malaria in humans. The antimalarial drug is selected from the group consisting of (a) alkaloids; (b) 9-amino-acridines; (c) 4-aminoquinolines; (d) 8-aminoquinolines; (e) biguanides; (f) dihyrofolate reductase inhibitors; (g) sulfones; (h) sulfonamides; (i) mefloquine; (j) halofantrine; (k) hydroxyanilino-benzo-naphtyridines; and (l) sesquiterpene lactones.      The antimalarial drug is administered to the human in an amount sufficient to prevent or at least inhibit infection of T lymphocytes by HIV in vivo or to prevent or at least inhibit replication of HIV in vivo.
Patent CA-2034332-C (CA)
Inventor: GILBERT RONALD E
IPC: F04D29/04
Filed: 1991-01-17
Granted: 2003-04-01
Abstract: A~drive system for impeller shafts includes a coupling that has a universal joint that is lubricated under all operating conditions. A housing is connected to the universal joint, which housing includes a hollow end portion adapted to receive the non-threaded end of an impeller shaft. A threaded stud projects from the end of the shaft and into the housing where the stud is secured by means of a nut. The nut is readily accessible to the user so that the axial position of the shaft can be adjusted without difficulty. The nut is releasably held within the housing so that the shaft and stud, with nut attached, can be quickly disconnected from the coupling. The invention also includes a modified "square driven" configuration for the ends of the shaft that is extremely strong and enables the shaft to be connected to the impeller and the coupling very easily.
Patent CA-2037124-C (CA)
Inventor: DABLAINVILLE RAYMOND
IPC: G01N21/78
Filed: 1991-02-25
Granted: 1993-10-05
Abstract: Continuous monitoring of the impurity content in a product travelling past in bulk and with a nonuniform thickness on a conveyor belt. The monitored impurity giving a colour reaction with a suitable reagent. 
<??>The invention consists of the combination of three means: 
 
  - a means for levelling the upper surface of the product on the belt at least in a certain region, 
  - a means for spraying the reagent on the surface of the product which is thus levelled, in order to develop the colour by reaction with the impurity 
  - a means for colorimetric determination of the intensity of the colour obtained with the aid of the reagent. 
 
<??>The invention applies in particular to the monitoring of the residual sodium hydroxide content in alumina trihydrate obtained in the Bayer process before it is calcined. 
<IMAGE>
Patent CA-2040051-C (CA)
Title: Flexible razor head
Inventor: CHEN EVAN N
IPC: B26B21/44
Filed: 1991-04-09
Granted: 1995-05-09
Abstract: A flexible razor head is provided which features a flexible cap and seat.  Corrugations, having portions of different widths, present in the seat enhance the ability of the seat to lengthen in response to shaving forces.
Patent CA-2044040-C (CA)
Inventor: DUFOUR PASCAL
IPC: B01D39/06
Filed: 1991-06-06
Granted: 2001-08-21
Abstract: La calcination de la diatomite est effectuée au sein d'une veine gazeuse spiralants à haute température, dans laquelle un anneau de billes réfractaires reste en sustentation, anneau au sein duquel s'opère la calcination et l'agglomération contrôlée des particules diatomitiques. La structure amorphe de la silice est conservée: on obtient ainsi des agents de filtration très perméables pratiquement exempts de oristobalite.
Patent CA-2049142-C (CA)
Title: Crane securement latch
Inventor: LONG HERBERT D JR
IPC: B66C9/18
Filed: 1991-08-14
Granted: 1996-05-14
Abstract: A latch for a crane travelable along a pair of generally parallel rails and having an overhead frame and a plurality of wheels engaging both of the rails for supporting the crane during its travel on the rails.  The latch comprises a latch arm mounted on the crane and having a path of movement substantially in the direction of travel of the crane.  The latch arm also includes a transversely protecting hook.  A latch block is stationarily mounted and has a lip member projecting into the path of movement of the latch arm.  The hook on the latch arm moves with the latch arm into engagement with the lip member and the lip member and hook have an engaged position in which the lip member is positioned between the hook and the crane whereby the crane is held from traveling away from the the latch block.  The latch may also include a compressible bumper mounted on the crane and engaging the latch block compressively in the direction of the crane travel toward the latch block.  The crane is thereby also held from traveling toward the latch block.  A support is positioned below the latch arm when the hook and lip means are in their engaged position.  The support is movable to an upward position beneath the latch arm to support the latch arm in an upward position in which the hook and lip member are disengaged.
Patent CA-2050665-C (CA)
Title: Fiber treatment agent composition
Inventor: OZAKI MASARU
IPC: D06M15/643
Filed: 1991-09-04
Granted: 1998-12-29
Abstract: The present invention provides a fiber treatment emulsion composition which can make animal fibers (mainly wool) resistant to the shrinkage arising from water-based laundering.  The composition forms a strong, solid film by reaction among the base material, crosslinker, and colloidal silica as the water evaporates.  These effects are reinforced by binding between the functional groups present in the fiber and such functional groups as the aminoalkyl groups bonded in the organopolysiloxane base material, the silanol groups bonded in the colloidal silica, and the amino, epoxy, methacryloxy, or acryloxy groups bonded in the crosslinker.
Patent CA-2065240-C (CA)
Inventor: BALES THOMAS O JR
IPC: A61B17/00
Filed: 1991-05-07
Granted: 2001-08-14
Abstract: A biological forceps device (10), comprising a flexible main coil (50) attached at its distal end (12) to a pair of homologous jaws (18). The jaws (18) are opened and closed by attachment to a pair of pull wires (60) which extend through the main coil (50), into a handle (17) at its proximal end (16). The handle (17) has a spool (19) which slides about a central shaft (56) attached to the main coil (50).
Patent CA-2066543-C (CA)
Title: Adaptive synchronization arrangement
Inventor: FARWELL CHARLES YEOMANS
IPC: H04J3/06
Filed: 1992-04-21
Granted: 1997-01-14
Abstract: A CDMA cellular radio-telephone system (FIG. 2) has switching systems (201) synchronized to public telephone network (100) timing signals (600), and radio telephones (203) and cell base stations (202) synchronized to a different clock (1000). Transmission delays between the cell base stations and the telephone network are variable. Switching systems include digital communications interfaces (264) to the telephone system, whose connections to the telephone system are synchronized to the telephone system, and whose connections to the cells arenominally also synchronized to the telephone system but whose processor (602) operates for each call within predefined windows (1302, 1402) of phase relationships to the operation of the cell that is handling the call, and occasionally adjusts(FIGS. 13-16) its phase relationships to the operation of the telephone system to achieve and maintain its operation within the predefined windows. Packet-switched communications (350) between the cells and the switching systems absorb the phase relationship fluctuations and the timing adjustments in inter-packet intervals. Circuit-switched digital communications between the switching systems and the telephone system absorb the timing adjustments by means of vocoder (604)-implemented slips --bit insertions or deletions-- in the communications traffic bit stream.
Patent CA-2067484-C (CA)
Inventor: ALVAREZ ROBERT J
IPC: F25C1/12
Filed: 1992-04-28
Granted: 2001-04-03
Abstract: An ice maker module is built on an integrally formed plastic base. One or more ice making modules are stacked on top of an ice bin. Integrally formed within the plastic base is "wet" compartment within which are disposed multiple numbers of evaporators on which water is frozen into ice cubes. The plastic base also separates the wet compartment from a dry compartment in which is mounted refrigeration components and control circuitry. The evaporators are constructed of two plates of stainless steel. Icing sites are located on the flattened sides of a serpentine refrigeration channel formed between depressions in the stainless steel plates. A microcontroller operates the ice making process.  Harvesting of the ice cubes is initiated after the ice maker has used an amount of water necessary to make the ice. An ultrasonic range finder monitors the amount of ice in the bin.
Patent CA-2070687-C (CA)
Title: Pharmaceutical preparation for controlling pathogenic intestinal bacteria
Inventor: GRAHN EVA ELISABETH
IPC: A61K35/74
Filed: 1990-12-19
Granted: 2001-04-10
Abstract: A pharmaceutical preparation for controlling pathogenic microorganisms causi ng diarrhoea and other gastrointestinal troubles in man and in animals contains Streptococcus lactic strain LIa in a t least one pharmaceutically acceptable carrier medium in which the microorganism retains its viability. The use of the preparation for controlling pathogenic microorganisms causing diarrhoea and other gastrointestinal infections in man and in animal s is also described.
Patent CA-2070782-C (CA)
Title: Vacuum cleaner
Inventor: ZENGERER HANS
IPC: A47L9/18
Filed: 1991-01-16
Granted: 1995-01-31
Abstract: S u m m a r y The  Vacuum  Cleaner  features a  vacuum chamber (3), in which a negative pressure is generated by a blower (6),  and an liquid  container  (4)  arranged underneath vacuum chamber. The vacuum chamber (3) is separated from  the liquid  container (4) by a  partition (19) with an  aperture in the center, which is shielded by a cover (21).  A  suction  line  (9)  leads  to the bottom of the liquid container (4). It transports the dust into the liquid container (4), where it is bound by water.  To tran-quilize the turbulences developing in the liquid, lamellae (11) are arranged transverse to  the suction  line (9)  in staggered position  to  each  other  and  extending only over part of the cross section of the vacuum chamber (4). This  configuration as well  as  the  arrangement  of  the  cover  (21) prevent liquid particles from being swept along into the vacuum chamber (3).
Patent CA-2072513-C (CA)
Title: Lozenge or chewable tablet
Inventor: GERGELY GERHARD
IPC: A61K31/60
Filed: 1992-06-26
Granted: 2002-03-26
Abstract: The lozenge or chewable tablet contains, as the base, at least 30, preferably 50 to 70, percent by weight of an alkali metal and/or alkaline earth metal salt of at least one edible, organic acid, at least 10, preferably 20 to 40, percent by weight of a mixture of at least one unreacted, edible organic acid with at least one unreacted alkali metal or alkaline earth metal carbonate and/or bicarbonate and, if required, a pharmaceutical active substance and/or other conventional tablet assistants, such as flavors and sweeteners, disintegrants, hydrocolloids, etc. It contains essentially the dibasic alkali metal and/or alkaline earth metal salt of a tribasic, edible, organic acid, in particular of citric acid, and preferably an edible, organic acid, which in particular has reacted only partially to give the alkali metal and/or alkaline earth metal salt, in particular malic acid, which is stronger than the tribasic acid, and if required - based on the total tablet weight - 1 to 10, preferably 3 to 7, percent by weight of at least one disintegrant, in particular about 3 percent by weight each of starch and crosslinked polyvinylpyrrolidone.
Patent CA-2073830-C (CA)
Title: Continuous process for preparing dimethyl carbonate
Inventor: NISHIHIRA KEIGO
IPC: C07C68/00
Filed: 1992-07-14
Granted: 2003-10-07
Abstract: Disclosed is a continuous process for preparing dimethyl carbonate which comprises: a first step of introducing a gas containing carbon monoxide and methyl nitrite into a reactor filled with a solid catalyst to obtain a reaction product containing dimethyl carbonate; a second step of separating the reaction product to a non-condensed gas and a solution containing dimethyl carbonate by adding dimethyl oxalate; a third step of introducing the non-condensed gas into a regenerating column to contact it with a molecular state oxygen-containing gas and methanol whereby regenerating nitrogen monoxide to methyl, nitrite, so as to contain 2 to 7 % by volume of nitrogen monoxide in a non-absorbed gas at an outlet of the column, which in turn is introduced in the reactor of the first step; a fourth step of extracting, distilling and separating dimethyl carbonate from the solution by further adding dimethyl oxalate to remove methanol; and a fifth step of distilling and separating dimethyl carbonate from a mixed solution to remove dimethyl oxalate and recycling the removed dimethyl oxalate to the fourth step.
Patent CA-2079117-C (CA)
Title: Rotisserie heat directing device
Inventor: KOZIOL WALTER
IPC: A47J37/07
Filed: 1992-09-25
Granted: 1996-08-20
Abstract: A device for directing heat from a heat source in a barbecue grill to food on a rotisserie.  The heat directing device has a base portion for placement over a heat source and a hollow duct extending from the base portion which terminates in an opening directed at the rotisserie.  In one embodiment, there are two oppositely positioned ducts to direct heat to both the front and back of the food to be cooked.  In another embodiment, there are louvers in the base portion so as to allow some heat to escape the base portion and cook the food from the underside.  The base portion and duct are adjustable in a lateral manner to fit various sizes of barbecue grill bases.  The heat directing device is especially suited for a gas fired barbecue grill unit.
Patent CA-2079720-C (CA)
Inventor: CUMMINGS ARTHUR L
IPC: B01J49/00
Filed: 1992-10-02
Granted: 1999-12-21
Abstract: Monitoring and controlling the reactivation of an alkanolamine solution containing heat-stable salts of such alkanolamine with stronger acid anions and weaker acid anions by contacting the alkanolamine solution (a) with a strong base anion exchange resin which has a high affinity for stronger acid anions (b) contacting the effluent alkanolamine solution from the strong base anion exchange resin with a second strong base anion exchange resin which has an affinity for weaker acid anions (c) measuring and recording the electrical conductance of the effluent solution from the first mentioned anion exchange resin (d) removing the first mentioned anion exchange resin from service when the conductance of the effluent alkanolamine solution from said resin indicates breakthrough of stronger acid anions in said effluent, (e) measuring and recording the electrical conductance of the effluent alkanolamine solution from the second mentioned anion exchange resin (f) removing the second mentioned anion exchange resin from service when the conductance of the affluent alkanalamine solution from said resin indicates break through of weaker acid anions in said effluent and (g) regenerating the strong base anion exchange resins.
Patent CA-2082137-C (CA)
Title: Aliphatic esters as a solventless coating for pharmaceuticals
Inventor: GOWAN WALTER G JR
IPC: A61K9/16
Filed: 1992-11-04
Granted: 2003-08-19
Abstract: A physicochemically stable pharmaceutical matrix composition is provided comprising: a pharmaceutical active and a water insoluble aliphatic or fatty acid ester, preferably stearyl stearate; a taste mask carrier for pharmaceutical actives comprising a taste masking effective amount of an aliphatic or fatty acid ester; and a method for preparing a pharmaceutical matrix without the use of organic and/or volatile solvents comprising the steps of: melting an aliphatic or fatty acid ester; admixing at least one pharmaceutical active with the molten aliphatic or fatty acid ester; and solidifying the admixture to produce a pharmaceutical matrix composition. The matrix is composed of an aliphatic, or fatty acid, ester that has a low melting point (50°-100°C) and the melt exhibits: low viscosity, recongeals rapidly when cooled, does not exhibit polymorphism, and has good mold release properties.
Patent CA-2084635-C (CA)
Title: Method and apparatus for sealing a center valve vacuum filter
Inventor: BARDSLEY DONALD E
IPC: B01D33/82
Filed: 1992-12-04
Granted: 1998-05-26
Abstract: A seal for a rotating center valve vacuum filter drum has a non-flat cross section with an elastomeric core and a chemical resistant sheathing.  The seal is installed under tension so that, as wear occurs during operation, positive sealing contact is maintained.  The non-flat cross section provides a nesting relationship with the center valve slot and stationary shoe to resist any tendency to wander out of the slot.
Patent CA-2093488-C (CA)
Title: Liquid antioxidants as stabilisers
Inventor: DUBS PAUL
IPC: C08K5/00
Filed: 1993-04-06
Granted: 2004-02-10
Abstract: Products are described which can be obtained by reacting components a), b) and c), where component a) is a compound of the formula I or a mixture of compounds of the formula I, component b) is a compound of the formula II or a mixture of compounds of the formu-la II and component c) is a compound of the formula III or a mixture of compounds of the formula III,   the compound of the formula I being, for example, pentaerythritol thiodiethylene glycol, 1,4-butanediol, 1,4-propanediol., diethylene glycol, triethylene glycol, diethanolamine or glycerol, the compound of the formula II being, for example, sunflower oil or coconut fat, and the compound of the formula III being, for example, methyl 3-(3',5'-di-tert-butyl-4'-hydroxyphenyl)propionate. The abovementioned products can be used as liquid antioxidants in polymers and lubricants.
Patent CA-2095313-C (CA)
Title: Method for judging discharge state of ink jet recording head, and ink jet recording apparatus utilizing the same
Inventor: OHSHIMA NORIYOSHI
IPC: B41J2/165
Filed: 1993-04-30
Granted: 1998-09-01
Abstract: The temperature characteristics of an ink jet recording head are detected, and the result of detection is utilized for detecting the ink discharge state.  Also a statistical processing on the temperature characteristics detected on plural recording heads enables exact detection of the ink discharge state, not effected by the individual difference of the recording heads.  Also there is detected the abnormality in ink discharge, that may occur prior to the exhaustion of ink in the ink tank.
Patent CA-2100232-C (CA)
Inventor: NAGPAL VIJAY
IPC: B21K1/30
Filed: 1993-09-23
Granted: 1998-09-22
Abstract: A forging die and a forging die manufacturing method for extruding helical gears wherein the lead end face of each die tooth is made up of harmonious S-shaped curves with each curve having maximized-radii contours.  The shape of the S-shaped curves is formed by dividing the cylindrical surface at the lead end face and the full depth perimeter into an equal number of equally spaced points, connecting these points up into pairs so as to establish the shortest distance between the pairs of points and using these pairs as the end points for the S-shaped curves.
Patent CA-2100464-C (CA)
Inventor: LABRIE FERNAND
IPC: G01N33/574
Filed: 1992-01-13
Granted: 2002-10-08
Abstract: A method of prescreening for possible prostate cancer comprises measuring serum specific antigen (PSA) concentration and comparing that concentration to a specific threshold value to identify a subpopulation of men having a high risk of the presence of prostate cancer, thus suggesting more extensive diagnostic procedures to confirm or eliminate diagnosis of prostate cancer.
Patent CA-2100480-C (CA)
Inventor: KAHRS JEFFREY WAYNE
IPC: B60C9/13
Filed: 1993-07-14
Granted: 2002-02-12
Abstract: A multi-layer circumferentially reinforced radial pneumatic light truck tire having a belt structure of at least two layers of 2+2x.35ST cord for Load Range E.