baber/WOPTO huggingface dataset:
Patent CA-1288251-C (CA)
Title: Temperature controlled compartment for a refrigerator
Inventor: FROHBIETER EDWIN H
IPC: F25D25/02
Filed: 1987-12-30
Granted: 1991-09-03
Abstract: ABSTRACT    A refrigerator  is provided  which  has  a compartment  to be chilled  below  the  temperature  of  the  remainder  of  the  main refrigerator  compartment  and  which  has  an  openable  container therein.  The  container  is  provided with  apertures therethrough near the front wall such that a stream of temperarture conditioned air is caused to flow around the outer surface of the container within the compartment and to flow through the interior of the container,  particularly across the  inside  surface of the front wall,  to  provide  a  minimal  temperature  gradient  within  the container.
Patent CA-1316544-C (CA)
Title: Production of carboxylic acids and esters thereof
Inventor: EVANS JOHN
IPC: C07C69/003
Filed: 1988-01-08
Granted: 1993-04-20
Abstract: ABSTRACT OF THE DISCLOSURE       THE PRODUCTION OF CARBOXYLIC ACIDS AND ESTERS THEREOF           A process for the production from an alcohol having n carbon atoms, wherein n is a number from 1 to 20, of a carboxylic acid having n + 1 carbon atoms and/or an ester of the alcohol having n carbon atoms with the carboxylic acid by reacting the alcohol at a temperature of at least 50°C with carbon monoxide in the presence of a noble metal-containing heterogeneous catalyst and a halogen or halogen compound promoter characterised in that the catalyst comprises a noble metal component bonded to an inorganic oxide having surface hydroxyl groups through the intermediacy of a silicon compound which is condensible with the hydroxyl groups of the inorganic oxide and has either (i) at least one nitrogen-containing functional group capable of coordinating with the noble metal component or (ii) a functional group capable of reacting further with a nitrogen-containing functional group capable of coordinating with the noble metal component thereby to bond the nitrogen-containing functional group to the silicon compound.
Patent CA-1278736-C (CA)
Title: Tire building former
Inventor: WRIGHT ANTHONY R
IPC: B29D30/20
Filed: 1988-02-09
Granted: 1991-01-08
Abstract: ABSTRACT            A cylindrical tire building former (11) has two sets of radially expandable segments (37) or (38) located one set at each axial end of the former.            The sets of segments (37) or (38) are expanded by engagement of each segment with an axially moveable wedge member (36).  The wedge member (36) may comprise an annular body, or an annular array of individual wedges. The wedge member (36) is moved by operation of a plurality of screw struts (47) which are arranged on a pitch circle and which are each rotated by a planet gear (51).  The planet gears (51) are driven simultaneously by a central sun gear (52) to move the wedge member evenly along the screw struts (47).
Patent CA-1283690-C (CA)
Title: Flat thin display device having semiconductor cathodes
Inventor: HOEBERECHTS ARTHUR M E
IPC: H01J31/24
Filed: 1988-02-25
Granted: 1991-04-30
Abstract: ABSTRACT     A flat thin display device is obtained by means of cold cathodes (10) in which each cathode provides the electron emission (14) for a (part of a) column of pixels.  The emissive surface is preferably chosen to be parallel to the front and rear walls (3, 4) of the display device so that the cathodes cannot degrade due to an ion bombardment.
Patent CA-1315702-C (CA)
Title: Method of controlling amount of removed water by ultrafiltration and control device for controlling amount of removed water by ultrafiltration in hemodialysis
Inventor: TSUJI TSUYOSHI
IPC: B01D61/28
Filed: 1988-04-18
Granted: 1993-04-06
Abstract: A B S T R A C T      The  device  for  controlling  the amount of  removed water by ultrafiltration can eliminate the scaling error completely by the use of the diaphragms in the scaling mechanism, and thus, the water elimination precision can be improved.
Patent CA-1312416-C (CA)
Inventor: WHITE W EDWARD
IPC: D06P1/60
Filed: 1988-05-24
Granted: 1993-01-12
Abstract: A COMPOSITION FOR DYEING MATERIAL OF SYNTHETIC AROMATIC POLYAMIDE FIBERS     Abstract of the Disclosure A composition for dyeing material of synthetic aromatic polyamide fibers, including a cationic dye and a dye assistant, which is a mixture of N-substituted phthalimide and an emulsifier. The N-substituted phthalimide is preferably a 2:1 mole ratio of N-butyl phthalimide and isopropyl phthalimide. The emulsifier is preferably propylene oxide and ethylene oxide block polymer, and an anionic surfactant blend and an anionic/cationic surfactant blend.
Patent CA-1288174-C (CA)
Inventor: DAIGLE DONALD W
IPC: G01K7/02
Filed: 1988-09-21
Granted: 1991-08-27
Abstract: ABSTRACT         A mineral insulated thermocouple cable is inserted into a cover tube.  The cover tube is sealed shut beyond the end of the thermocouple hot junction.  The void within the cover tube in and around the thermocouple hot junction area has a heat conductive filler such as a boron ceramic preform or even some liquid mercury.  The tube is filled with an inert gas such as argon, pressurized from a gas source and connected to a negative pressure alarm or gauge for detecting pressure loss.  When there is an escape of gas from the tube, indicating penetration of the gas tube wall by corrosion, thereby causing a reduction in pressure in the gas tube, the reduction in pressure is observed at the gauge, or it triggers the alarm.
Patent CA-1312676-C (CA)
Title: Apparatus and method for identification of message initiation in a process control network
Inventor: GERHART PAUL B
IPC: H04L1/00
Filed: 1988-11-17
Granted: 1993-01-12
Abstract: ABSTRACT    In  order  to insure the accuracy of information transmitted over a network,  the  initiation  of  the message  must  be  unambiguously  identified.  In the present invention, the intermessage spacing  consists of a series of identical logic signals that exceeds a minimum value distinguishing  this  interval  from  a message   character.    The   message  character  has predefined length, with a start bit  position  and  a stop bit position logic signal bounding the character that have the same predetermined  logic  signals  for every  message character.  The character has at least one additional non-data bit position that has a first logic  signal  for the initial character of a message and the complementary logic signal for the  remaining characters in the message.
Patent CA-1337750-C (CA)
Title: Supercritical fluid reverse micelle separation
Inventor: FULTON JOHN L
IPC: C09K23/00
Filed: 1988-11-22
Granted: 1995-12-19
Abstract: The surfactant sodium bis(2-ethylhexyl) sulfosuccinate (AOT) forms reverse micelles and microemulsions using ethane and propane under near critical and supercritical conditions for systems consisting of 80 to 100 percent alkane by weight. Phase diagrams from view cell studies of microemulsion phases formed in supercritical fluids are reported and shown to be strongly dependent on pressure.  The properties of these solutions were also characterized by conductivity, density and surfactant solubility measurements.  The solubility of AOT in ethane and propane over a range of pressures shows behavior typical of solids in supercritical fluids.  The maximum water to surfactant ratio (Wo) increased dramatically in both ethane and propane systems as pressure was increased.  At 300 bar and 103°C, the supercritical propane-surfactant system is capable of solubilizing much more water (Wo = 12) than the supercritical ethane-surfactant system (Wo = 4) at 300 bar and 37°C. Some of the important thermodynamic contributions which are likely responsible for this pressure dependent phase behavior are discussed and potential applications of this new class of solvents are considered.  Other nonpolar and low polarity fluids in which near critical and supercritical reverse micelle systems can be formed include CO2, N2O, SF6, Xenon, alkenes (ethylene and propylene) and chlorinated or fluorinated hydrocarbons (CF3Cl and CF3H).
Patent CA-1277388-C (CA)
Inventor: BAIRD ALISTAIR R W
IPC: G01F23/292
Filed: 1988-12-09
Granted: 1990-12-04
Abstract: ABSTRACT OF THE DISCLOSURE               LIQUID LEVEL SENSOR            A liquid level sensor comprises a light source in the form of a semiconductor device, a light sensor also in the form of a semiconductor device, and an optical element arranged to transmit light from the light source and to receive reflected light and transmit it to the light sensor, the liquid level sensor further comprising  a  carrier having gas-filled cavities means in which the light   source  and the  light  source  and  the  light  sensor  are respectively mounted,  the cavities being separated by barrier means to  prevent  scattered light reaching the light sensor from the light source.    The mounting  of  the light  source  and light sensor in gas-filled  cavities  extends significantly the operating temperature range of the liquid level sensor.
Patent CA-1337651-C (CA)
Inventor: KARASAWA MICHITO
IPC: A61K41/00
Filed: 1988-12-16
Granted: 1995-11-28
Abstract: This invention relates to novel pheophorbide derivatives of the general formula:       wherein Z is O or NH; n is an integer of 1 to 6; Y is NR'R" or      wherein R', R" and R"' are the same or different or each represents a C1 to C4 lower alkyl group; X- is a halogen or organic acid ion; R1 is an ethenyl group, C1 to C4 lower alkyl group or            wherein M is an integer of 0 to 6; R6 is H or a C1 to C4 lower alkyl group; R2 is CH3, CHO or CH2OH; either of R3 and R4 is H, with the other being OH, or both of them combine to represent =O; R5 is H or CO2CH3. When administered to a cancer-carrying animal, the derivatives accumulate specifically in cancer tissues and emit a characteristic fluorescent spectrum under irradiation of light, which enables one to detect the cancer tissues.
Patent CA-1299719-C (CA)
Inventor: LIU HUI C
IPC: H01S5/34
Filed: 1989-01-13
Granted: 1992-04-28
Abstract: TITLE             SEMICONDUCTOR SUPERLATTICE INFRARED SOURCE                     INVENTORS                  HUI CHUN LIU   ABSTRACT           An infrared emitting semiconductor device having a layer-shaped infrared emitting region with a superlattice structure.  The superlattice structure consists of thin alternating narrow and wide wells separated by thin barriers.  The narrow well has one quasibound state E'0 while the wide well has two states E0 and E1 with E0' being located between E0 and E1.          Under proper bias, an electron in state E0 can resonately tunnel out of the well through the quasibound state E'0 to the first excited state E1 of the next wide well.  This electron can then relax to the ground state E0 where it can resonately tunnel to the next wide well and repeat the process.  Infrared radiation with its photon energy equal to E1-E0 is emitted as the electrons relax from E1 to E0 in the wide wells.
Patent CA-1330385-C (CA)
Title: Countergravity casting process and apparatus using  destructible patterns suspended in an inherently  unstable mass of particulate mold material
Inventor: CHANDLEY GEORGE D
IPC: B22C9/04
Filed: 1989-02-02
Granted: 1994-06-28
Abstract: COUNTERGRAVITY CASTING PROCESS AND APPARATUS USING DESTRUCTIBLE PATTERNS SUSPENDED IN AN INHERENTLY UNSTABLE MASS OF          PARTICULATE MOLD MATERIAL              Abstract of The Disclosure A countergravity casting process involving holding an inherently unstable mass of particulate mold material in an open bottom container around a destructible pattern therein by exerting external fluid pressure, such as atmospheric pressure, on a bottom side of the particulate mass in excess of internal pressure in the container.  The container and an underlying molten metal pool are relatively moved to place the bottom side of the particulate mass in the pool.  Molten metal is drawn through an ingate to the pattern to destroy and replace the pattern in the particulate mass.  When the container and pool are relatively moved to extract the bottom side from the pool after casting, the particulate mold material is held in the container around the metal replacing the pattern by the external/internal pressure differential between the bottom side of the particulate mass and interior of the container.  The particulate mold material and solidified metal therein are removed from the container by equalizing the external and internal pressures.  Typically, atmospheric pressure is exerted on the bottom side of particulate mass while subatmospheric pressure is provided in the container.
Patent CA-1316547-C (CA)
Title: Process for recovering natural gas liquids
Inventor: REINTJES FRANK J
IPC: C10L3/10
Filed: 1989-02-10
Granted: 1993-04-20
Abstract: IMPROVED PROCESS FOR RECOVERING NATURAL GAS LIQUIDS                       ABSTRACT OF THE DISCLOSURE An improvement in a process is provided for treating a moisture-containing natural gas stream to recover an improved yield of liquified heavy hydrocarbons (i.e. natural gas liquids or NGL's). More particularly, the process begins by dehydrating the wet natural gas stream to reduce the water content thereof to less than about 1 ppm. The dried natural gas is chilled to a temperature in the range of -40°F to -50°F to condense the NGL's from the natural gas. The present improvement provides that the chilled, dried gas, from which some NGL's are condensed, is further cooled to a temperature in the range of between about -70°F to -80°F by expanding the gas through a Joule Thomson valve prior to its introduction into a conventional low temperature separator. In the separator, hydrocarbon liquids drop out and a chilled, overhead hydrocarbon gas stream is produced. The hydrocarbon liquids are passed to a downstream fractionation column to remove the gases entrained in the NGL. The NGL's are then recovered at the base of the column. The overhead vapours from the fractionator are introduced into a very cold absorber, called a SCAU (Super Cooled Absorption Unit) after expanding the gas from the fractionator pressure to the absorption pressure by means of a Joule Thomson valve and in the process reducing the temperature to liquify the stream substantially. The overhead hydrocarbon gas stream from the low temperature separator is then contacted counter-currently with the partially liquified overhead stream from the fractionation column, in the SCAU. In the SCAU, a large portion of the propane and substantially all of the heavier hydrocarbon components in the hydrocarbon gaseous feed stream are recovered. The overhead vapour phase is the Sales Gas from the process.
Patent CA-1308244-C (CA)
Inventor: RADWANSKI FRED R
IPC: D04H1/46
Filed: 1989-03-13
Granted: 1992-10-06
Abstract: ABSTRACT OF THE DISCLOSURE     Nonwoven materials, methods of forming the same, and apparatus for forming the same, are disclosed.  The nonwoven materials include at least one nonwoven web, with the at least one web being bonded by entangle bonding in spots, such entangle bonding being provided by hydraulic entangling.  As a specific embodiment, elastomeric laminate are formed, the at least one nonwoven web subjected to spot-entangle-bonding including an elastomeric web spot-entangle-bonded to another web to as to form an elastomoric laminates.  By spot-entangle-bonding (jet treating)  the webs, utilizing hydraulic entangling to provide the spot-entangle-bonds, conventional bonding methods need not be used, whereby good hand and drape properties can be retained after bonding, and the overall bulk of the material can be maintained, while providing a product that does not easily delaminate and that is stretchable and resilient.  Also disclosed is an apparatus for carrying out the spot-entangle-bonding, including two rotatable perforated drums having water jet manifolds inside thereof, the nonwoven material passing on the circumference thereof, with high pressure water jets issuing from the manifolds and through openings in the perforated drums so as to achieve hydraulic entangling of the nonwoven material at spots corresponding to openings of the perforated drums, with one side of the nonwoven material being adjacent the surface of one of the rotatable perforated drums and the opposite side of the nonwoven material being adjacent the surface of the other rotatable perforated drum.
Patent CA-1312097-C (CA)
Title: Procede de production d'olefines a partir du gaz naturel
Inventor: CAMERON CHARLES
IPC: B01J23/10
Filed: 1989-04-05
Granted: 1992-12-29
Abstract: Procédé de production d'oléfines a partir du gaz naturel. Le gaz naturel est fractionné. Le méthane additionné d'oxygène traverse le réacteur d'oxydation, reçoit les hydrocarbures C2+ et le mélange traverse le réacteur de pyrolyse. On recueille un courant d'hydrocarbures renfermant des oléfines.
Patent CA-1325621-C (CA)
Inventor: BADGER ERNEST E
IPC: B31B50/64
Filed: 1989-05-23
Granted: 1993-12-28
Abstract: ABSTRACT        Method and apparatus are provided for forming an envelope wherein front and rear panels of an envelope are incorporated in continuous or discrete webs or sheets.  Heat activatable adhesive is applied to three peripheral edge portions of one of the envelope panels in facing engagement with the other of the panels.  The webs or sheets are fixed together and fed into a printing machine such as a table or desk top laser printer wherein the heat fusing rolls of the printer are utilized to activate the heat activatable adhesive to thereby secure the envelope panels together to form an envelope pocket.  One of the envelope panels incorporates a sealing flap portion which may be provided with a rewettable adhesive pattern, while the facing portion of the opposed sheet may be provided with an antistick composition to prevent premature sticking between the sheets in the area of the sealing flap.
Patent CA-1332379-C (CA)
Title: Plastic security case for a gold coin, precious stone or other item, ensuring authenticity and unaffected quality of the coinage or of the production of the item
Inventor: BENARDELLI GIOVANNI
IPC: B65D85/00
Filed: 1989-05-23
Granted: 1994-10-11
Abstract: ABSTRACT      In a case of plastic material for containing a single marketable valuable piece as a coin or the like, a precious stone or a stamp or other item, comprising two superimposed elements at least one of which is transparent, with the said piece interposed between the elements and the elements connected at least all along the perimeter of their edges, the invention substantially provides that, between the two elements having the shape of a credit card and enclosing the piece,  there is,  as  a safeguard  not only against counterfeiting but also against forced opening, a printed decorative layer, such as a hologram or a decorative multi-ink  layer  anchored  in  a  discontinuous  manner,  and representing a delaminable security printing pattern, which is visibly lacerated in the event of a forced opening of the case.
Patent CA-1329685-C (CA)
Title: Process and a device for preparation of expanded thermoplastic microspheres
Inventor: PETERSEN JOERGEN
IPC: B29C44/28
Filed: 1989-06-19
Granted: 1994-05-24
Abstract: ABSTRACT     The present invention relates to a method for produc-ing expanded thermoplastic microspheres by heating. Unex-panded microspheres are dried under agitation to a dry solids content exceeding 98% by weight, preferably 99% by weight, before heating. The dried microspheres can be re-wetted and then expanded by heating. The microspheres thus produced contain but minor amounts of agglomerates. The in-vention also comprises an apparatus for expanding the dried spheres. The apparatus has a belt conveyor (A), a device (B) for IR heating, a dosing device (C) for unexpanded spheres, and a collecting device (D) for expanded spheres.
Patent CA-1329145-C (CA)
Inventor: CONNOLLY JAMES D
IPC: F16J15/40
Filed: 1989-06-20
Granted: 1994-05-03
Abstract: AIR SEAL CENTRIFUGE SCREEN BASKET                      Abstract of the Disclosure A centrifuge screen basket mounting about an outer end portion a plurality of circumferentially spaced impeller blades in operation confronting and radially spaced inwardly of a seal ring of a centrifuge machine, the blades being uniformly tilted forwardly in the basket's direction of rotation for producing on such rotation a blast or force of air opposing and sealing against escape of fluid or other previously separated material past the basket's outer end.
Patent CA-1311885-C (CA)
Inventor: MROZINSKI JAMES S
IPC: H01M50/491
Filed: 1989-06-21
Granted: 1992-12-29
Abstract: MULTI-LAYERED LAMINATES OF MICROPOROUS FILMS    Abstract Multi-layer, microporous polyolefin sheet materials are provided.  The sheet materials comprise at least two microporous polyolefin layers, the layers being autogenously bonded and having substantially the same porosity as prior to bonding.
Patent CA-1331834-C (CA)
Title: Process for producing beta manganese dioxide
Inventor: WALKER ANDRE L
IPC: C01G45/02
Filed: 1989-06-21
Granted: 1994-09-06
Abstract: ABSTRACT   The present invention relates to an improved process for producing beta manganese dioxide and for producing cathodes from said manganese dioxide.  The process comprises heating gamma manganese dioxide at at lest 450°C for up to one hour in order to convert a majority of the gamma manganese dioxide to the beta phase without forming detrimental amounts of lower oxides.
Patent CA-1322746-C (CA)
Inventor: JAIN ANIL K
IPC: B01J27/053
Filed: 1989-06-27
Granted: 1993-10-05
Abstract: Abstract A process for the conversion of a heavy hydrocarbon oil in the presence of hydrogen and iron-petroleum coke catalyst is described in which the iron-petroleum coke catalyst is prepared by grinding petroleum coke particles and particles of an iron compound in oil to form an additive slurry or paste and mixing the petroleum coke-iron oil slurry or paste with the heavy hydrocarbon oil to form a feedstock to a hydroconverter.
Patent CA-1325345-C (CA)
Inventor: BRADBURY FAREL
IPC: C08L23/16
Filed: 1989-07-17
Granted: 1993-12-21
Abstract: ABSTRACT       A mechanical transducer comprises a converter which comprises a plurality of elongate flexible elements (1) joined together at their opposite ends and spaced at intervals around a longitudinal axis of the transducer.  The opposite ends (2,2) of the converter are displaceable towards and away from each other along the axis, which displacement is accompanied by a bowing or straightening of the elongate elements (1).  Thus, an axial force applied to the converter will be converted to a radial force exerted by the elongate elements (1), or a radial force applied to the elongate elements (1) will be converted to an axial force.
Patent CA-1326278-C (CA)
Inventor: BOND ROBERT H
IPC: B22C9/04
Filed: 1989-08-14
Granted: 1994-01-18
Abstract: CONTROL SYSTEM FOR VIBRATORY APPARATUS                          ABSTRACT              A compaction table control system includes a vari-able speed vibratory motor having an eccentric weight coupled to a compaction table. The motor is operated ac-cording to acceleration of sand in a flask to vary the motor speed and thus the acceleration of the sand.
Patent CA-1337078-C (CA)
Inventor: MEASOR GRAHAME C
IPC: H04L25/03
Filed: 1989-09-27
Granted: 1995-09-19
Abstract: In a  line interface circuit for binary data signals means are provided for compensating varying lengths of line in the receiving and/or transmission path. The output signal of a line equalizer controls a variable impedance circuit in such a  way  that  attenuation  of  a  line  build  out  network is reduced if the output level of the line equalizer is falling below  a  threshold.  A  transmit  line  build  out  network provides a frequency dependent attenuation of binary data by means  of  a  control  circuit,  which  supplies  discrete attenuation values according to a logic word.