baber/WOPTO huggingface dataset:
Patent CA-1292623-C (CA)
Title: Extraction of metal values from ores or concentrates
Inventor: POOLEY FREDERICK D
IPC: C22B/
Filed: 1987-03-13
Granted: 1991-12-03
Abstract: ABSTRACT            EXTRACTION OF METAL VALUES FROM ORES OR CONCENTRATES     A process is described for leaching ores or concentrates containing one or more metallic sulphides with a circulating liquor so as to solubilise desired metal values therefrom, if said metal values are capable of dissolution in an acidic ferric sulphate solution (e.g. copper), or so as to render the desired metal values (e.g. gold) more accessible to subsequent processing, in each case by effecting metallic sulphide dissolution from the ore or concentrate.  In this process the ore or concentrate, for example a gold ore, is leached in a leach stage using an acidic leaching medium formed by mixing recycled liquor with a make-up stream containing bacterially generated ferric ions and sulphate ions which is produced in a generator (a) which is external to the circulation path of the liquor between the leach stage and a separation stage, (b) which contains a colony of suitable bacteria, such as Thiobacillus ferro-oxidans, and (c) which is fed, as necessary, with a pyritic material, water, nutrients, sulphuric acid and an oxygen-containing gas (e.g. air).  As the presence of live bacteria in the leach stage is not essential to operation, the process can be used for leaching arsenopyritic and similar ores and with a recycle stream containing high levels of arsenic or other impurity which is potentially deleterious to bacterial viability.  A mixture of leached solids and liquor is passed from the leach stage to the separation stage, which is  included in the path of the circulating liquor where leached solids are separated from a ferrous sulphate-containing liquor.  The leached solids can be treated for recovery of metal values (e.g. gold), if the metal values are not leached in the leach stage. Alternatively, if the desired metal values (e.g. copper) appear in the liquor, the leached solids are discarded and the liquor is subjected to metal recovery, e.g. cementation, before recycle.
Patent CA-1302406-C (CA)
Title: Method of manufacturing moranoline derivatives
Inventor: EZURE YOJI
IPC: C07H17/02
Filed: 1987-04-14
Granted: 1992-06-02
Abstract: ABSTRACT     A  method  of  preparing  crystals  of  a  glucosylmoranoline formula (III)                  (III) wherein   R   is   hydrogen   or   lower   alkyl   by   fractional crystallization using a polar solvent and an arylsulfonic acid.
Patent CA-1339925-C (CA)
Inventor: CHOAY JEAN
IPC: C08B37/10
Filed: 1987-04-16
Granted: 1998-06-23
Abstract: The oligosaccharides of the invention are composed essentially of chains: possessing a specific affinity for the anionic and cationic cell growth factor which recognize herparin, comprising at least one sequence of 5 residues matching those present in naturally occurring heparin and possessing a strongly anionic character such as that indicated in the NMR spectrum shown in FIG. 1, as well as their pharmacologically acceptable salts.
Patent CA-1295447-C (CA)
Title: Heat resistant organic synthetic fibers and process for producing the same
Inventor: ASANO SHOJI
IPC: C25D3/04
Filed: 1987-05-20
Granted: 1992-02-11
Abstract: Abstract:        The present invention is directed to heat resistant organic fibers comprising a wholly aromatic polymer having an amide group and/or an imide group, said fibers having properties satisfying the following formulas Tm  ?  350°C, Tm - Tex  ?  30°C, Xc  ?  10%         DE  ?  10%         DSR(Tm) ?  15%, and   wherein Tm is a melting point; Tex is an exotherm starting temperature; Xc is a degree of crystallization;          DE is an elongation; DSR is a dry shrinkage factor at Tm; and DSR(Tm + 55°C) is a dry shrinkage factor at Tm + 55°C and to a process for producing the fibers.
Patent CA-1281774-C (CA)
Inventor: KALLUP BERNHARD
IPC: H01M50/541
Filed: 1987-06-19
Granted: 1991-03-19
Abstract: Abstract of the Disclosure A device, configured as a double mold, for casting terminal bars (straps) and terminal poles onto the lugs of a completely assembled plate group for electric storage batteries ensures optimum attachment of all of the lugs (both polarities) to the molten bar lead if the heat exchange between the bar lead and the dipped volume of each negative or positive lug is identical.          This requirement is met by causing the negative and positive casting molds, together with their contents, to form thermally equivalent sections or blocks, which are equalized if necessary, by changing the dimensions (thickness) of the mold's walls.        When the lugs are made of lead or a lead alloy, such a double mold also makes it possible, during a subsequent two-stage cooling process, to first allow the terminal poles to solidify, simultaneously, and to then allow the terminal bars to solidify, simultaneously.  If the negative plates of the cell group have copper grids and lugs (which may also be coated with lead or lead-tin alloys), the two-stage cooling process must be effected at different working rates for the two polarities.
Patent CA-1310266-C (CA)
Title: Thymus derivative active after oral administration, methods of preparation and pharmaceutical compositions
Inventor: BRUNETTI BRUNETTO
IPC: A61K35/26
Filed: 1987-07-10
Granted: 1992-11-17
Abstract: ABSTRACT OF THE DISCLOSURE Thymolymphotropin, a thymus derivative able to stimulate the differentiation and the function of T-lymphocytes, is active after oral administration and can be prepared through a process of partial acid lysis of mammal thymuses. Pharmaceutical compositions containing thymolymphotropin are utilized in the treatment of primary and secondary immunodeficiencies.
Patent CA-1297117-C (CA)
Title: Multifunctional amino zirconium aluminum metallo organic complexes useful as adhesion promoter
Inventor: COHEN LAWRENCE B
IPC: C07F7/00
Filed: 1987-08-26
Granted: 1992-03-10
Abstract: ABSTRACT OF THE DISCLOSURE        This invention relates to novel compositions of matter which are multifunctional amino  zirconium aluminum metallo organic complexes which are comprised of a chemically united complex aluminum moiety, a tetravalent zirconium moiety, and a multifunctional amino acid wherein the acid is chemically bound to both the aluminum and zirconium centers.  Such compositions are useful in promoting adhesion of adhesives, sealants, and coatings,  to metal, rubber, glass, plastic, coating, and wood thereby enhancing strength properties and prolonging useful service life when such products are exposed to aggressive environments.  Further described is the specific process for the preparing of such compositions in organic media with desirable stability of the metal centers toward polymerization and related hydrolysis.
Patent CA-1311528-C (CA)
Inventor: SATO TOSHIFUMI
IPC: H04L29/08
Filed: 1987-09-30
Granted: 1992-12-15
Abstract: ABSTRACT          A method of transmitting and receiving a paging signal, involves N-degree interleaving a paging signal whose bit rate is N-R where N is a positive integer and R is a basic bit rate and transmitting the interleaved paging signal.  The transmitted paging signal is received and subjected to N-degree de-interleaving to produce an interleaved signal.  Then it is decided whether or not the de-interleaved signal includes a desired paging signal.          This technique allows the paging system to accommodate receivers of different bit rates.  A paging system using this method is resistive to burst errors even if the bit rate is increased.
Patent CA-1300000-C (CA)
Title: Recovery of heavy oil
Inventor: STOCKWELL ALAN
IPC: C10G1/04
Filed: 1987-10-28
Granted: 1992-05-05
Abstract: ABSTRACT OF THE DISCLOSURE                      RECOVERY OF HEAVY OIL       A two stage method for the recover of heavy crude oil or bitumen associated with a solid inorganic substance and water from an underground deposit comprises chemically conditioning the deposit in situ with an aqueous solution of an alkaline compound and subsequently treating the conditioned deposit to recover the heavy crude oil or bitumen from it.     The method is particularly suitable for recovering bitumam from tar sand.     In situ conditioning increases the yield of product.
Patent CA-1291078-C (CA)
Inventor: OLIFF JAMES R
IPC: B65D71/00
Filed: 1987-12-02
Granted: 1991-10-22
Abstract: ABSTRACT            A  package  accommodating  a  group  of  like  flanged containers disposed in more than one row includes a top panel   (16)   and   overlapping   base   panels   (12,20) interconnected  by  spaced  side  walls  (14,18)  thereby providing a tubular structure in which the containers are received.  The base panels include a keel (K) adapted to separate the containers in one row (R1) from those in an adjacent row (R2).  One of the base panels is provided with  locking  elements  (48)  adapted to  interlock with cooperating locking elements (46) provided by the other of the base panels thereby to maintain the package in its tubular form.  Auxiliary cooperating locking elements are provided by the base panels and interlocked to minimize distortion of the keel, and portions of the top flanges (f) of the containers in one row (R1) are overlapped with portions of top flanges of the containers in an adjacent row (R2) and portions of the top panel are interposed between the overlapped portions of the container flanges.
Patent CA-1291814-C (CA)
Title: Apparatus for reproducing a digital signal
Inventor: SUGIKI HIRAKU
IPC: G11B15/467
Filed: 1988-01-22
Granted: 1991-11-05
Abstract: ABSTRACT OF THE DISCLOSURE A rotary head apparatus of the type which reproduces digital signals recorded in one or more oblique tracks on a recording medium, the digital signals being formatted such that one frame of the digital signals is formed of n blocks, each block having added to it a block address and a frame address, wherein the apparatus compares the frame address from the reproduced signal with a reference frame address which varies with a reference period, and the transporting speed of the recording medium is then controlled so as to make the difference between the reproduced frame address and the reference frame address constant.
Patent CA-1326320-C (CA)
Title: Aromatic polysulfone resin composition having excellent plating characteristics
Inventor: TATSUKAMI YOSHIHARU
IPC: C08K3/26
Filed: 1988-02-25
Granted: 1994-01-18
Abstract: ABSTRACT OF THE DISCLOSURE         An aromatic polysulfone resin composition with excellent plating characteristics comprising:           (A)   50 to 90% by weight of an aromatic polysulfone, (B)     3 to 40% by weight of wollastonite of which 90% by weight or more of the total amount have a particle size smaller than 300 meshes, and (C)     3 to 30% by weight of an alkaline earth metal carbonate is disclosed.          This aromatic polysulfone resin composition has excellent mechanical properties, thermal properties (in terms of thermal deformation temperature and linear thermal expansion coefficient), dimensional stability, thermal stability during processing and surface smoothness and also shows excellent plating characteristics in a wide range of plating conditions (etching conditions).  By using this aromatic polysulfone resin composition, it is possible to easily obtain a printed circuit board having a desired configuration by means of injection molding, and it becomes possible to form the circuits with a fine line width.
Patent CA-1331594-C (CA)
Inventor: FANTONE STEVEN D
IPC: A61B1/00
Filed: 1988-04-27
Granted: 1994-08-23
Abstract: OPTICAL VIEWING DEVICE               ABSTRACT OF THE DISCLOSURE    An apparatus for viewing a region within a body cavity or the like.  The apparatus includes an elongate light pipe having a distal end and a proximal end, which light pipe illuminates the region to be viewed adjacent the distal end of the pipe.  An objective lens system is carried at that distal end which in a preferred embodi-ment forms a focused real image of the illuminated re-gion.  This image is transmitted to the viewer through a series of relay lenses and, at the proximal end of the apparatus, through a viewing lens system.  The light pipe and the lenses are composed of a polymeric material such as styrene, polycarbonate, acrylic, or the like, and are preferably aspheric lenses.
Patent CA-1304889-C (CA)
Title: Femoral insert
Inventor: BROOKS PETER J
IPC: A61F2/00
Filed: 1988-05-12
Granted: 1992-07-14
Abstract: CANADA Title:  A FEMORAL INSERT                   Inventor:  PETER JOHN BROOKS                             ABSTRACT        This invention relates to a femoral  insert for a hip joint prosthesis  for use in a femur that has been cut across the femoral neck to form a cut surface. The insert includes a stem having a proximal end attachable to a generally spherical head member, a distal end and a bend located therebetween. A collar is provided for transferring axial loads from the stem to the femur at the cut surface. A sleeve is secured within the femur,  the sleeve  having  a  central  orifice  for  receiving  the  stem.  The sleeve permits the stem to move axially but restricts the stem from any rotational movement.  The sleeve is  secured  into  the femur below the cut surface.
Patent CA-1294289-C (CA)
Title: Catecholamine derivatives
Inventor: DIXON JOHN
IPC: C07C67/00
Filed: 1988-05-18
Granted: 1992-01-14
Abstract: Abstract Compounds There are described compounds of formula I,   in which one of R30 and R40 represents a group Ra,                Ra and  the  other  of  R30  and  R40 represents  hydrogen or halogen, R50  and R60,  which  may  be  the  same or  different, each independently represent hydrogen or alkyl C 1 to C6; in addition R60 may represent a group Rb, Rb   wherein  X represents  a  C2  to  C8  alkylene  chain optionally  interrupted  by  a  double  bond  or  by  S(0)n, wherein n is 0, 1 or 2, Z represents a C 1 to C3 alkylene chain, each of X and Z being optionally substituted by OH or one or more alkyl C 1 to C6, R70  represents  hydrogen,   alkyl  C  1  to C6  or (CH2)qR11, R10   and   R11    independently   represent   phenyl substituted  by one or  more  substituents R23,  which may be the same or different; or R10 represents a saturated carbocyclic group, R15  represents  hydrogen,  alkyl  C  1  to  C6,  or together  with  R23  forms  a   (CH2)p  chain,  wherein  p represents 0, 1 or 2, R20,  R21,   R22  and  R23   independently  represent hydrogen,  alkyl  C  1  to  C6,  NHR25,  SH,  NO2,  halogen, CF3,   SO2R26,   CH20H  or   O~,   wherein  R25  represents hydrogen, alkyl C 1 to C6 or alkanoyl C 1 to C6 and R26 represents alkyl C 1 to C6 or NH2 1 represents 2, 3 or 4, q represents an integer from 1 to 6 inclusive, provided   that  when   R40,   R50   and   R70   each represent hydrogen and R60 represents Rb, then   Ra   represents   2(3-hydroxyphenyl)ethyl,   R15 represents hydrogen and either a)    X  represents  (CH2)p,  in which  p  is  3,  5,  7 or 8 or b)    at  least  one  of  X  and  Z  is  substituted  by either OH or one or more alkyl C 1 to C6, and  pharmaceutically  acceptable  salts  and  solvates thereof.     There   are   also   described   processes   for   the preparation   of   the   compounds   of   formula   I   and pharmaceutical compositions containing them. The compounds of  the  invention  may  be  used  in  the  treatment  or prophylaxis of renal failure or cardiovascular disorders.   2038L(ir)/ac
Patent CA-1323799-C (CA)
Inventor: SEWON PENTTI K
IPC: A23B7/10
Filed: 1988-07-12
Granted: 1993-11-02
Abstract: Abstract of the Disclosure The invention relates to a brine for conserving cucumber in bulk making fermentation unnecessary. The brine according to the invention is an aqueous solution containing per liter of the solution: at least 0.15 kg sodium chloride, 0.01-0.05 kg acetic or lactic acid or a salt thereof, at least 1 g each of sodium benzoate, calcium chloride, and potassium sorbate and at least 50 mg each of ascorbic acid and citric acid. The taste and crispiness of a product processed from cucumbers stored in this brine for an extended period are equal to that of fresh packed cucumbers.
Patent CA-1328507-C (CA)
Inventor: JARMAN LEONARD B
IPC: B63G7/00
Filed: 1988-08-04
Granted: 1994-04-12
Abstract: ABSTRACT                    Performance Monitor Apparatus A performance monitor apparatus for a minehunting operation, the apparatus comprising means 1, for gathering environmental data relevant to minehunting performance, first data storage means 15 for minehunting performance prediction algorithms, second data storage means for system/ship/mine target parameters, and performance prediction means capable of providing an output signal relevant to expected minehunting performance. This gives increased efficiency in the searching operation.            [FIGURE 1]
Patent CA-1287274-C (CA)
Title: Combustion of aqueous sewage sludge by the fluidized bed process
Inventor: REISCHL ARTUR
IPC: C02F11/06
Filed: 1988-08-18
Granted: 1991-08-06
Abstract: Mo-3058 LeA 25,168 COMBUSTION OF AQUEOUS SEWAGE SLUDGE     BY THE FLUIDIZED BED PROCESS    ABSTRACT OF THE DISCLOSURE       This invention relates to a process for the combustion of aqueous sewage sludge comprising burning, in a fluidized bed furnace, an aqueous mixture of a sewage sludge and a TDI residue, said aqueous mixture having a total solids content of from 25 to 98% by weight of the aqueous mixture, wherein the TDI residue comprises 25 to 95% by weight of the total solids content.             Mo-3058
Patent CA-1306112-C (CA)
Title: Pyrotechnic mixture to produce a smoke screen
Inventor: KRONE UWE
IPC: C06D3/00
Filed: 1988-08-25
Granted: 1992-08-11
Abstract: ABSTRACT         A smoke screen that is particularly suitable for exer-cises is to be produced by the present invention, said smoke screen being in the form of an aerosol that is neither toxic to humans and animals in its effect, nor hazardous to the environ-ment.  This is achieved with a so-called pyrotechnic set that is made up as follows,  A light-metal powder, preferably magnesium powder (Mg) as a metallic reducing agent, potassium nitrate (KNO3) or a mixture of potassium nitrate (KNO3) and potassium perchlorate (KClO4) as the main oxidizing agent, at least one carbonate, e.g., calcium carbonate (CaCO3), potassium hydrocarbonate (KHCO3), sodium hydrocarbonate (NaHCO3), potassium carbonate (K2CO3), sodium carbonate (Na2CO3), and substances that give off nitrogen as combustion moderators, as well as at least one additional substance that can be sublimated or vapourized, forms smoke, and is non-toxic.
Patent CA-1290395-C (CA)
Title: Program clock for an electronic demand register with automatic calibration based on sensed line frequency
Inventor: SZABELA WILLIAM A
IPC: G01R21/133
Filed: 1988-09-07
Granted: 1991-10-08
Abstract: Abstract of the Disclosure An electronic demand register includes a microprocessor including a program clock for performing timekeeping functions for the register. A power supply connected across the AC voltage source provides power to the microprocessor through a voltage regulator. The program clock is maintained by the line frequency of the AC source. Means are provided for calibrating the program clock to be compatible with either a 50 Hz or a 60 Hz line frequency. A detection signal corresponding to the line frequency is generated by a line frequency detector circuit in the power supply. A reference signal is generated by a quartz crystal clock. Frequency comparator means includes a microprocessor program that measures the time period between detection signal pulses. This time period is compared to the known period of a 50 Hz or a 60 Hz signal and respective counters are incremented accordingly. The microprocessor and program clock operating parameters are established for either 50 Hz of 60 Hz operation when one of the counters has reached a value of five, indicating that five zero crossings have been detected at the particular frequency. The electronic demand register also comprises a display including an array of LCD segments for continuous simultaneous display of the time and date. The display also includes an array of LCD segments, arranged in a pattern, that are sequentially illuminated corresponding to the rate of rotation of the shutter disk of the pulse initiator.
Patent CA-1326783-C (CA)
Title: Process for enzymatic producing bifidogenic infant and dietetic foods
Inventor: SCHWEIKHARDT FRIEDRICH
IPC: A23C11/04
Filed: 1988-09-14
Granted: 1994-02-08
Abstract: ABSTRACT          The present invention relates to a process for the production of liquid and powered bifidogenic infant and dietetic foods which are reduced in their antigenicity.  The process according to the invention is characterized in that to achieve bifidogenicity, sialic acid is enzymatically cleaved from the milk proteins using the enzyme neuraminidase (sialidase).  Consequently in accordance to the invention it is possible to produce bifidogenic infant foods, particularly suitable for infants, premature and small for date babies, which can additionally be used in cases of intolerances against usual milk products.  Furthermore the process can be used for production of dietetic food, particularly for patients suffering from intestinal allergies, other allergic diseases and patients with insufficiency of liver and kidney.
Patent CA-1289195-C (CA)
Title: Frequency translation correction scheme satellite communication system
Inventor: ARNOLD M PHILLIP
IPC: H04B7/212
Filed: 1988-09-27
Granted: 1991-09-17
Abstract: ABSTRACT OF THE DISCLOSURE      In a time division multiple access satellite communications system having a master station and one or more remote stations, frequency  offset  through  the  translation  oscillator  in the satellite is corrected by transmitting a pilot frequency signal, referenced to a high precision oscillator, through the satellite, so  as  to  subject  the  pilot  frequency  signal  to  a  frequency translation and monitoring the frequency translation of the pilot frequency signal as received at the master station subsequent to its transmission through the satellite. Signals to be transmitted over the satellite communications link from the master station to remote stations are subjected to a frequency translation that is effectively complementary to the monitored frequency translation.           At  a  remote  station,  received  signals  are  monitored  for  a difference in the corrected frequency (based upon the use of the precision oscillator at the master site) relative to a prescribed frequency and signals to be transmitted from the remote station to the master station are adjusted by an amount that effectively compensates for the difference between the prescribed frequency and the monitored frequency.
Patent CA-1327639-C (CA)
Inventor: WONG HEE
IPC: H04L7/033
Filed: 1988-10-13
Granted: 1994-03-08
Abstract: Abstract The present invention provides a timing recovery technique for baseband-coded data sequences which applies to line codes with inband timing information embedded in periodic signal transitions, such as zero-crossings.  The technique utilizes a selection of data patterns, like mark-to-mark, which have zero-crossings at the "center" of a transition from a positive to negative mark.  These so-called "bipolar patterns" consist of two polar-signals of opposite polarity sharing neighboring baud intervals.  Because the random nature of a data sequence gives timing information a statistical behavior, a timing recovery system recovers a timing average, the efficiency of the system being given in terms of the timing variance.  According to the present invention, a low variance estimate for the bipolar-pattern-center timing signal is obtained by proper filtering.