baber/WOPTO huggingface dataset:
Patent CA-1335468-C (CA)
Title: Process for the preparation of polymers based on conjugated dienes and optionally monovinylaromatic compounds
Inventor: HELLERMANN WALTER
IPC: C08F236/04
Filed: 1988-07-26
Granted: 1995-05-02
Abstract: A block-free polymer is prepared by anionically polymerizing at least two compounds selected from the groups consisting of butadiene, isoprene and styrene in an inert organic solvent in the presence of an organolithium compound as a catalyst and a cocatalyst of a glycol dialkyl ether:               wherein R3 is hydrogen, methyl or ethyl, R1 and R2 are alkyl groups of different numbers of carbon atoms selected from the group consisting of methyl, ethyl, n-propyl, isopropyl, n-butyl, iso-butyl, sec-butyl and t-butyl, and the total number of carbon atoms in the alkyl groups ranges from 5 to 7.
Patent CA-1328254-C (CA)
Title: Drill pipes and casings utilizing multi-conduit tabulars
Inventor: CURLETT HARRY B
IPC: E21B17/02
Filed: 1988-07-27
Granted: 1994-04-05
Abstract: Abstract of the Disclosure An improved drill pipe utilizing multi-conduit tubulars is provided.  A seal subassembly is  constructed and arranged so as to receive  a plurality of similar tubular conduits.  The similar tubular conduits are inserted into both ends of the seal subassembly.  At one end, the tubular conduits are threadably attached to the seal subassembly, while at the opposite end, the tubular conduits are slidably attached to the seal subassembly.  T-rings seals are provided to insure sealing engagement of the tubular conduits to the seal subassembly.  A collar is provided to join a drill pipe to one end of the seal subassembly.  A lift subassembly is provided to attach the other end of the seal subassembly to another drill pipe. The seal subassembly is constructed so as to allow the tubular conduits to be of strength sufficient to withstand pressure and compression forces only.  Tension and torsional forces are handled entirely by the drill pipe outer casings, the collar, the seal subassembly, and the lift  subassembly.
Patent CA-1314929-C (CA)
Title: Manufacture of beta-alumina artifacts
Inventor: DUNCAN JAMES H
IPC: H01M10/39
Filed: 1988-10-05
Granted: 1993-03-23
Abstract: ABSTRACT OF THE DISCLOSURE     The invention provides a method of making a composite beta-alumina artifact,  such  as  a  separator  tube  for  an  electochemical  cell, comprising two beta-alumina portions which are sealed together in a sealing zone, namely an inner portion and an outer portion which extends peripherally around the inner portion and embraces it in the sealing zone.   The method comprises pressing the inner and outer portions from powders which, when sintered, shrink and form integral beta-alumina artifacts.  The portions are then arranged so that the outer portion extends around the inner portion and embraces it in a sealing zone.  The portions are then sintered to cause them to seal together hermetically in the sealing zone while converting each of the portions into a beta-alumina artifact.  The portions are made so that the outer portion undergoes a greater degree of shrinkage during sintering than the inner portion and the portions are pressed so that the spacing between the portions where  the outer portion extends around and embraces the inner portion is such that, upon sintering, the  outer portion  shrinks  on to the  inner portion to provide a hermetic peripheral seal between the portions.
Patent CA-1325723-C (CA)
Inventor: NGUYEN ANH D
IPC: C06B25/36
Filed: 1988-12-05
Granted: 1994-01-04
Abstract: ABSTRACT "Nitroalkane-Based Emulsion Explosive Composition"   An emulsion explosive composition comprising a discontinuous oxidizer phase and a continuous fuel phase is provided wherein the fuel phase comprises a nitroalkane compound.  The composition essentially contains as the emulsifying agent a polyisobutylene succinic anhydride-based compound in admixture with an ester of 1-4 sorbitan and oleic acid.  The composition demonstrates high explosive strength and excellent stability.
Patent CA-1311197-C (CA)
Title: Electric wheel-chair (elektrorollstuhl)
Inventor: KOERBER HANS W
IPC: A61G5/04
Filed: 1988-12-12
Granted: 1992-12-08
Abstract: Abstract of the Disclosure:                "Electric wheel-chair"            The electric wheel-chair comprises drive wheels on one axle group, and swivel wheels on a second axle group, with the swivel wheels being either freely pivotable or positively steerable by engageable steering drive means. The positive steering system may have either a purely electric configuration in the form of a pair of electric steering drive means, or an electro-mechanical configuration in the form of a common steering drive means and a mechanical steering mechanism with electro-mechanical disengagement of the positive steering system. Switch-over from pivoting to steering operation is monitored by position sensors provided on the swivel wheels. As the seat assembly is adapted to be rotated to a corresponding position, the swivel wheels may be operated alternatively as the front wheels or the rear wheels of the wheel-chair. Owing to the engageable steering drive means, the wheel-chair is well adapted for both indoor operation and outdoor operation, thereby considerably enhancing the mobility of a disabled person.
Patent CA-1295260-C (CA)
Title: Wind turbine system using twin-savonius-type rotors
Inventor: BENESH ALVIN H
IPC: F03D3/02
Filed: 1988-12-14
Granted: 1992-02-04
Abstract: ABSTRACT OF THE DISCLOSURE          The present invention relates to a combination of two vertical axis Savonius-type rotors (20,120) mounted on a support structure (210) and a deflector plate (200).  The deflector plate serves as an augmentation apparatus which considerably increases the power output of both Savonius-type-rotors and also improves their self-starting ability and smoothness of operation.  The support structure is mounted for rotation about a central ver-tical shaft (242) so that the rotor-deflector combination can be properly positioned.  The invention also provides a partition plate (236) positioned between the rotors to give rigidity to the deflector plate.
Patent CA-1339477-C (CA)
Inventor: BROCKWAY WILLIAM J
IPC: C07K1/16
Filed: 1988-12-20
Granted: 1997-09-23
Abstract: Highly purified antihemophilic factor is produced by a process comprising a PEG precipitation step, a gel filtration step and a virus inactivation step.  Al(OH)3 adsorption and PEG precipitation carried out at room temperature allow processing to proceed directly to a gel filtration step.
Patent CA-1297532-C (CA)
Title: Zero-current switching dc to dc full-wasve mode converter
Inventor: LIEBERMAN LEV ARIE
IPC: H02M3/26
Filed: 1989-01-18
Granted: 1992-03-17
Abstract: DC TO DC POWER CONVERTER                   ABSTRACT OF THE DISCLOSURE          A zero-current switching DC to DC fullwave mode converter, having a controllable DC to AC converter including electronic switches for selectively coupling a source of voltage across a primary winding of a power transformer circuit when the current flow through the switches is substantially negligible, AC to DC converter connected to secondary windings of the power transformer circuit, two charging and energy storing circuits each including a storage capacitor connected in series with one of the secondary windings and further including an inductor unit connected in circuit between the input of the DC to AC converter and the storage capacitor and at least one discharging circuit connected across the storage capacitors and being connectable via a first and a second terminal to a load, the discharging circuit including at least one discharging inductor connected between one side of the storage capacitor and the first terminal, wherein the charging period of the storage capacitor is smaller than the discharging period thereof.
Patent CA-1317849-C (CA)
Title: Sugar esters as detergency boosters
Inventor: BROZE GUY
IPC: C11D1/722
Filed: 1989-01-20
Granted: 1993-05-18
Abstract: SUGAR ESTERS AS DETERGENCY BOOSTERS           ABSTRACT OF THE DISCLOSURE           A heavy duty detergent composition having incorporated therein a sugar ester which provides detergency boosting properties to the detergent composition,  The sugar ester contains at least one long-chain fatty acid.
Patent CA-1323150-C (CA)
Inventor: TANG MAN-WING
IPC: C01B32/50
Filed: 1989-01-23
Granted: 1993-10-19
Abstract: Docket No.:  270-P-USO3850 AIR DRIED CELLULOSE ACETATE MEMBRANES                  ABSTRACT OF THE INVENTION      The method of preparing dried asymmetric cellulose acetate  blend  membranes  through  the  use  of  at  least one drying agent which is a hydrophobic organic compound, such  as  polysiloxanes,  hydrocarbons,  ethers,  ketones, chlorohydrocarbons  or  nitrohydrocarbons.   The membranes are dried from their aqueous state by direct evaporation of water.  The resulting air dried membranes are suitable for the desalination of water by reverse osmosis,  non-aqueous liquid separation, ultrafiltration, pervaporation, and for the separation of various gaseous mixtures into their constituent parts.
Patent CA-1300204-C (CA)
Title: Hold open device for compartment lid
Inventor: SHELTON ALAN J
IPC: E05C17/30
Filed: 1989-01-26
Granted: 1992-05-05
Abstract: Abstract of the Disclosure A completely mechacical hold open device for a swingably mounted vehicle closure includes a pair of telescoping members pivotally connected to the closure and vehicle body and a releasable latching means for automatically holding the telescoping members in an extended position and hence the closure in its open position.  The latching means is constructed such that it can be automatically released by merely exerting a downward force in excess of a predetermined magnitude on the closure to move the latter to its closed position.
Patent CA-1317644-C (CA)
Title: Large area microwave plasma apparatus
Inventor: DOEHLER JOACHIM
IPC: C23C16/511
Filed: 1989-03-21
Granted: 1993-05-11
Abstract: ABSTRACT          Microwave energy apparatus (10) for sustaining a substantially uniform plasma (20) over a relatively large area.  In the broadest form of the invention, an isolating window (60) is disposed about the microwave applicator (40), said isolating window formed from a material through which the microwave energy can be transmitted from the applicator into a plasma reaction vessel (12) and said isolating window configured in a shape which is substantially optimized to withstand compressive forces.  In this manner, the thickness of the isolating window may be minimized to provide for rapid thermal cooling, whereby high power densities may be achieved without cracking the window.     019 r
Patent CA-1310218-C (CA)
Inventor: INSTANCE DAVID J
IPC: B31D1/02
Filed: 1989-05-04
Granted: 1992-11-17
Abstract: METHOD OF AND APPARATUS FOR PRODUCING LABELS                 ABSTRACT OF THE DISCLOSURE     A method of producing a succession of self-adhesive labels carried on a length of release backing material, the method comprising the steps of:-(a) providing a laminar material which includes a release backing material as a lower layer and an upper layer comprised of a web of self-adhesive backed material or a layer of pressure-sensitive adhesive;      (b) depositing a succession of pre-printed labels onto the upper layer of the laminar material and adhering the pre-printed labels thereto, the laminar material being conveyed past a label applying station; and (c) cutting through the upper layer of the laminar material as far as the release backing material thereby to form the required self-adhesive labels; wherein the rate of deposition of the pre-printed labels onto the upper layer is controlled by detecting the position of pre-printed labels which have been deposited onto the laminar material, comparing the detected position with a desired position of the pre-printed labels and changing the said rate of deposition in response to that comparison.  The present invention also provides an apparatus for use with the method.
Patent CA-1321870-C (CA)
Inventor: BOCK JOACHIM
IPC: H01L39/12
Filed: 1989-07-21
Granted: 1993-09-07
Abstract: Process for producing a high-temperature superconductor and also shaped bodies composed thereof Abstract of the disclosure:            To  produce  a  high-temperature  superconductor  of the composition Bi2(Sr,Ca)3Cu2O/8+x having a strontium to calcium ratio of  5 : 1 to 2 : 1 and a value of x between 0 and 2, the oxides and/or carbonates of bismuth, strontium, calcium and copper are vigorously mixed in a stoichio-metric ratio. The mixture is heated at temperatures of 870 to 1100°C until a homogeneous melt is obtained. The melt is poured into molds and allowed to solidify in them. The cast bodies removed from the molds are annealed for 6 to 30 hours at 780 to 850°C. Finally, the annealed cast bodies are treated for at least 6 hours at tempera-tures of 600 to 820°C in an oxygen atmosphere.            The cast bodies can be converted into shaped bodies of the desired sizes by mechanical processes before they are annealed.           The shape and size of the shaped bodies may also be determined by the shape and dimensioning of the molds u  d in producing the cast bodies.
Patent CA-1338094-C (CA)
Title: Method of maintaining flowability of acrylic polymer dispersion
Inventor: TANAKA KATSUTOSHI
IPC: C08F220/42
Filed: 1989-08-01
Granted: 1996-02-27
Abstract: The present invention relates to a method of maintaining the flowability of a dispersion of fine particles of a water-soluble polymer mainly comprising acrylic acid and/or acrylamide in an aqueous salt solution for a long period of time.    In order to attain the above-described object, the present invention is characterized by adding to a polymer dispersion 0.05 to 1 % by weight, based on the dispersion, of a nonionic surfactant and 2 to 10 % by weight, based on the dispersion, of an oleaginous liquid.  The aqueous salt solution for dispersing the polymer particles is most preferably an aqueous solution of a salt wherein the counter ion is a monovalent cation, and the salt concentration of the aqueous solution is preferably at least 15 % by weight.    The acrylic water-soluble polymer dispersion is used for applications such as high-molecular flocculants, sizing agents, or paper-strength agents.
Patent CA-1321619-C (CA)
Title: Electrode line protection
Inventor: ASPLUND GUNNAR
IPC: H02H3/17
Filed: 1989-09-19
Granted: 1993-08-24
Abstract: ABSTRACT OF THE DISCLOSURE:            A convertor station for power transmission by means of high voltage direct current has an electrode line protective device for detection of ground faults on the electrode line of the station.  An alternating voltage generator injects an alternating signal with a predetermined frequency on the electrode line.  The two ends of the electrode line are provided with suppression filters tuned to the measuring frequency.  The suppression filter arranged at the remote end of the electrode line is matched, by means of a resistor to the wave impedance of the electrode line.  An impedance measuring device senses the impedance of the electrode line at the feeding point in relation to the ground at the measuring frequency.  An indicating signal is delivered from the measuring device if the impedance measured deviates from the impedance of the electrode line when in a faultless state.
Patent CA-1326122-C (CA)
Inventor: SHERIF FAWZY G
IPC: C01G25/02
Filed: 1989-09-20
Granted: 1994-01-18
Abstract: PROCESS FOR FORMING METAL OXIDE POWDERS       FROM THE METAL ALKOXIDE                 ABSTRACT OF THE INVENTION      Metal oxide powders, which are chemically uniform and free-flowing, can be formed by dissolving a metal alkoxide in a non-polar organic solvent, adding water to the resulting composition and then emulsifying the blend of water and solvent containing the alkoxide to cause hydrolysis of the alkoxide.  The hydrolysis reaction forms the desired metal oxide as a precipitate which can be recovered by a simple filtration process.
Patent CA-1303253-C (CA)
Title: Processes depending on plasma generation
Inventor: FLAMM DANIEL L
IPC: H05H1/46
Filed: 1989-09-25
Granted: 1992-06-09
Abstract: PROCESSES DEPENDING ON PLASMA GENERATION Abstract Anisotropic plasma etching is accomplished utilizing a helical resonator operated at relatively low gas pressure. The use of this combination yields an extremely high flux of ionic species with resulting rapid anisotropic etching. Ahelical resonator in conjunction with suitable precursors is also quite useful for plasma induced deposition.
Patent CA-1335422-C (CA)
Inventor: DEL PONTE DENIS J
IPC: B62D3/02
Filed: 1993-09-09
Granted: 1995-05-02
Abstract: A vehicle hydrostatic transmission has a bypass valve incorporated therein which may be selectively manually moved to an open position establishing a fluid path between a pressure delivery port of the motor of the transmission and a sump whereby the vehicle with which the transmission is associated may be moved when the engine is stopped.  The bypass valve is in fluid communication with the output of an engine-driven charge pump and is responsive to pressure delivered by the charge pump so as to be automatically returned to a closed position preventing flow from the motor to the sump when the engine is operating.
Patent DK-165038-C (DK)
Inventor: ALARD MICHEL
IPC: H04N7/083
Filed: 1985-06-03
Granted: 1993-02-08
Abstract: In a broadcasting system with time division multiplexing of digital signals containing a synchronization pattern and analog signals, sync extraction is achieved with a process including detecting the extreme values of the signals to be subjected to decoding, after they have been amplified with a gain G, with a time constant compatible with the low cut off frequencies to be accomodated; the gain G is controlled as a decreasing function of the difference between the extreme values with a time constant greater by several orders of size than the repetition period of the multiplex; before decoding and determination of the extreme values, there is added to the amplified signal a DC component which is a decreasing function of the sum of the extreme values, until the retrieval of the clock signal and identification of the synchronization pattern downstream of the coding.
Patent DK-151720-C (DK)
Inventor: HEINBUCHNER JOHANN
IPC: E04G21/18
Filed: 1983-09-21
Granted: 1988-06-13
Abstract: PCT No. PCT/EP83/00014 Sec. 371 Date Nov. 2, 1983 Sec. 102(e) Date Nov. 2, 1983 PCT Filed Jan. 19, 1983 PCT Pub. No. WO83/02634 PCT Pub. Date Aug. 4, 1983.Before being brought and fastened to the location of the building and before being connected to one another skeleton supports and ceiling beams of individual cell elements are orientated and preferably held together on a framework jig. For the skeleton supports and/or for the ceiling beams an orientation device, such as an opening accommodating the respective sleleton part, a peg penetrating the support or the like is foreseen. A formwork jig with a railing which extends preferably over the entire inside space of the cell element serves to facilitate assembly of the ceiling beams. At least one supporting device is foreseen in the middle of the jig for the connection point of ceiling beams.
Patent DK-159495-C (DK)
Inventor: WASSDAHL LARS A
IPC: B65G53/24
Filed: 1984-11-20
Granted: 1991-04-08
Abstract: @ For emptying a garbage room in a multistory residential building, a garbage container (22) is placed in the garbage room, which container has a transport duct (31) between the lower portion (30) of the container and a garbage truck collection chamber, which can be evacuated to produce suction in the duct and thus move the garbage, usually in garbage bags. According to the invention, the garbage container is provided with an externally operable valve (25) at one inlet (23) for garbage coming from a garbage chute and an opening (32) for inlet of air, which opening is also provided with a sealable valve (33). For emptying, during a first evacuation phase, both valves (25 and 33) are closed and during a second evacuation phase, the valve (33) at the air intake (32) is open. The garbage bags are thus evacuated of air during the first evacuation phase and pressed together into a significantly smaller volume by the air flowing in during the second evacuation phase, at the same time as they are removed through the transport duct.
Patent FI-77048-C (FI)
Inventor: EIBL JOHANN
IPC: A61K35/16
Filed: 1981-07-22
Granted: 1989-01-10
Abstract: In a method of producing a blood-coagulation-promoting preparation based on human proteins and having a content of coagulation factors II, VII, IX and X and factor-VIII-inhibitor-bypassing-activity (FEIBA), human plasma is treated with sulphated high-polymer carbohydrates and/or with basic ion exchangers, the protein mixture with generated FEIB-activity is adsorbed on the ion exchanger, and the preparation is gained by elution and concentration.
Patent FI-95014-C (FI)
Inventor: SHEPHERD DONALD WELTON
IPC: B62H1/06
Filed: 1991-08-26
Granted: 1995-12-11
Abstract: PCT No. PCT/GB90/00296 Sec. 371 Date Jul. 11, 1991 Sec. 102(e) Date Jul. 11, 1991 PCT Filed Feb. 26, 1990 PCT Pub. No. WO90/09918 PCT Pub. Date Sep. 7, 1990.A stabiliser system, primarily for supporting a pedal bicycle and its rider upright at the halt, comprises a spring-loaded telescopic arm (25) pivoted at its upper end adjacent the rear wheel spindle (12) and having at its lower end a cross-shaft (26) carrying stabiliser wheels (27). The arm can be lowered by back-pedalling to draw a cable (22) onto a spool (31) on the pedal spindle (18). The cross-shaft also carries a flanged roller (51). When the arm is lowered by back-pedalling as the rider comes to a halt, the cross-shaft (26) is drawn beneath the rear wheel and the tire (13) is engaged by the roller and the rear wheel is lifted off the ground, a large part of the weight of the rider being transferred to the ground through the rear wheel, the roller, the cross-shaft and the stabiliser wheels.
Patent NL-15775-C (NL)
IPC: C08L1/24
Abstract: Continuous films of cellulose are made from a viscose of an advanced degree of ripeness, as produced by an extension of the maturing period, such that coagulation occurs in a common salt solution of 3.5 per cent strength or less, for example, of 2 per cent strength. Suitable baths for precipitating the film contain 15-17 per cent ammonium sulphate, 10 per cent sodium sulphate, and 5 per cent alkali sulphides, or 10 per cent sulphuric acid and 10 per cent sodium sulphate.  Operating with a viscose of this ripeness, the films produced are transparent, homogeneous, without striae, and show faultless edges.
Patent NO-132180-C (NO)
Inventor: STEINKE III J J
IPC: C09G1/00
Filed: 1969-08-04
Abstract: 1284546 Clear toothpastes COLGATEPALMOLIVE CO 4 Aug 1969 [5 Aug 1968 (2)] 10835/72 Divided out of 1284544 Heading A5B A clear toothpaste comprises a clear toothpaste base having dispersed therein particles of agglomerated solid toothpaste ingredient comprising a water-insoluble dental polishing agent e.g. dicalciumphosphate, sodium metaphosphate, calcium carbonate, hydrated alumina, zirconium silicate, or various other phosphates, MgCO 3 , SiO 2  aluminium silicate or polymethyl methacrylate; which agglomerated particles are visible to the naked eye (preferably of size less than 2380 microns) and palpable and substantially retain their identity in the toothpaste and in the presence of saliva but are easily reducible by toothbrushing to fine, impalpable individual particles of the ingredient each of which is invisible to the naked eye (e.g. of size less than 177 microns). The polishing agent is blended with a binding agent e.g. polyethylene glycol, gum acacia or polyvinyl pyrrolidone, and this blend or a blend of polishing and tabletting agents may be compressed into tablets which are then broken down into the agglomerated particles. The agglomerates may be coloured by a dye or pigment and are incorporated into the toothpaste base which may be a gelled dental vehicle typically comprising 20-89.5% liquid and 0.05-5% gelling agent or gum, by weight of the toothpaste. The liquid portion comprises e.g. water, glycerine, sorbitol solution, propylene glycol or polyethylene glycol. Conventional additives may also be present in the toothpaste.