baber/WOPTO huggingface dataset:
Patent CA-2086008-A1 (CA)
Title: Method for recovering gold and silver from ore starting materials
Inventor: LASKORIN BORIS N
IPC: C22B11/08
Filed: 1991-11-06
Abstract: METHOD FOR RECOVERING GOLD AND SILVER FROM ORE STARTING             MATERIALS                          Abstract A method for recovering gold and silver from an ore starting materials involves an absorptive leaching of the starting material in pulp in a sequence of treatment devices, with subsequent multiple-stage desorption of gold, silver and impurities from a saturated synthetic sorbent (resin) containing ion-exchange groups.  Cyanides are charged into treatment devices individually to maintain in the treatment devices identical concentration required for a given starting material.  Desorption is carried out to isolate a fraction rich in gold and silver for making end products.  Desorption procedures allow gold, silver and impurities to be individually desorbed. Cyanidation is carried out before the absorptive leaching.  In case natural sorbents are available in a starting material, a sorbent is added to pulp before adding cyanides to the pulp.
Patent CA-2086796-A1 (CA)
Title: Water repellents containing organosilicon compounds
Inventor: NARULA DIPAK
IPC: D06M13/517
Filed: 1993-01-06
Abstract: WATER REPELLENTS CONTAINING ORGANOSILICON COMPOUNDS            ABSTRACT          A surface treating composition for excluding water penetration which is a solution obtained by combining water; an alkyltrialkoxysilane selected from the group consisting of C1 to C6 alkyl groups on silicon and blends of alkyltrialkoxysilanes with C1 to C6 alkyl groups on silicon; a silane coupling agent; and an aqueous silicone emulsion of an anionically stabilized hydroxyl endblocked polydiorgano-siloxane, amorphous silica and an organic tin salt.
Patent CA-2088792-A1 (CA)
Title: Coating of a roll in a paper machine using hypersonic plasma
Inventor: LEHTONEN PENTTI
IPC: D21F3/08
Filed: 1993-02-04
Abstract: Method of a coating a roll in a paper machine with powder of thermo plastic and/or speciality plastic. The coating is carried out by spraying by using hypersonic plasma.
Patent CA-2088995-A1 (CA)
Title: Plasma cycling sterilizing process
Inventor: MOULTEN KERN A
IPC: H05H1/46
Filed: 1991-08-09
Abstract: A method for plasma sterilization within a controlled temperature range comprising exposing an article in a sterilizing chamber (4) to a gas plasma flowing from a plasma generating chamber (2) until the temperature in the sterilizing chamber (4) rises to a preselected maximum temperature. The flow of the plasma gas to the sterilizing chamber (4) is terminated until the tem-perature in the sterilizing chamber (4) falls to a temperature below the preselected maximum temperature. These steps are repeat-ed until sterilization of the article is effected. The temperature below the preselected maximum temperature when gas plasma flow is again initiated is preferably not more than 3°C below the preselected maximum temperature. The gas plasma can be generated from a mixture of gases consisting essentially of argon, helium, nitrogen or mixtures thereof. Preferably the pressure in the steri-lizing chamber (4) rises to from 0.1 to 10 torr when the gas plasma is flowing into the chamber (4) and the pressure in the steriliz-ing chamber (4) falls to a lower pressure whan the gas plasma flow into the sterilizing chamber (4) is terminated.
Patent CA-2090786-A1 (CA)
Title: Additive blending controller
Inventor: PALOZZI NICOLA
IPC: G05D11/13
Filed: 1993-03-02
Abstract: ABSTRACT OF THE DISCLOSURE A method for controlling an additive blending process includes determining the volume of main product and blending an amount of additive thereto to obtain a predefined ratio of additive to main product. The method includes the step of creating a non-volatile record of each significant event which occurs during blending operations and includes an extensive error checking and safety regime.   A controller for accomplishing this method includes the ability to blend multiple additives simultaneously and with different types of blending systems such as piston injectors and streaming. The controller monitors status signals from the system and removes enabling signals from various components to effect a safe shut down in the event of an error condition being detected.
Patent CA-2090860-A1 (CA)
Title: Synthesis of equimolar multiple oligomer mixtures, especially of oligopeptide mixtures
Inventor: HOUGHTEN RICHARD A
IPC: G01N33/53
Filed: 1991-11-20
Abstract: A process for the synthesis of a complex mixture pool of solid support-coupled monomeric repeating unit compounds such as amino acid derivatives is disclosed in which the mixture pool contains an equimolar representation of reacted monomeric re-peating unit compounds coupled. Also disclosed is a process for the stepwise synthesis of a complex mixture of coupled or free, unsupported oligomers such as oligopeptides. A set of self-solubilizing, unsupported mixed oligopeptides having one or more predetermined amino acid residues at one or more of the same, predetermined positions in the oligopeptide chain in which the set contains equimolar amounts of a plurality of different amino acid residues, preferably at least six different residues, at one or more of the same predetermined positions of the oligopeptide chain is also disclosed, as are methods of making and using the same.
Patent CA-2094426-A1 (CA)
Title: Visually inspectable safety lanyard
Inventor: BELL MICHAEL
IPC: A62B35/04
Filed: 1991-10-02
Abstract: A  visually  inspectable  shock  absorbing  safety lanyard  (10)  to reduce the shock of gravity when a person wearing  a  safety  support  system  falls  from  an  elevated position.   The lanyard comprises a length of material  (12) having  a  first  end  (14)  adapted to be  connected to  the person, e.g., via a safety belt or harness, and a second end (14A) adapted to be connected to a fall prevention device, e.g.,  a rope grab,  and a  shock absorbing mechanism  (30) located therebetween.  The shock absorbing mechanism (30) is disposed within an inner cover (60) to hold the mechanism in place,  to keep it clean and to provide a visual indicator that the mechanism may have been tampered with or previously actuated.   A readily openable second cover (80) formed of a flexible  material  and  including  a  releasably  securable opening  (88)  is  disposed  about  the  inner  cover  and  is arranged when opened to provide visual access to the inner cover.   In the preferred embodiment,  the inner cover  (60) enclosing the shock  (30) is transparent so that the person using  the  lanyard  also  can  visually  inspect  the  shock absorber mechanism (30), within the inner cover (60).
Patent CA-2096730-A1 (CA)
Inventor: GUTMAN JOSE
IPC: G06Q20/04
Filed: 1991-10-07
Abstract: An electronic wallet (100) is capable of storing at least one of a financial information and a balance. Additionally, the electronic wallet (100) is capable of selective call receiving (200) a wireless message including financial information relating to a balance and updating the balance in response to the wireless message. <IMAGE>
Patent CA-2097866-A1 (CA)
Inventor: REIBOLDT HOWARD N
IPC: B29C63/34
Filed: 1993-06-07
Abstract: ABSTRACT OF THE INVENTION      A method and apparatus for assembling a thin film beam spring vent valve is provided.  The thin film beam spring vent valve is provided in a squeeze pump package.  The package includes an outer resilient  bottle  and  a  flexible  bag  with  a  relatively  rigid fitment.    The  outer  resilient  bottle  is   provided  with  a substantially cylindrical internal surface portion and an aperture to  enable  fluid  communication  between  the  interior  and  the exterior of the outer bottle.  The valve includes a thin film beam spring located adjacent  the aperture  such that  the beam spring will  seal  the  aperture  upon exposure  to  a  positive dispensing pressure within the bottle.  The beam spring will  allow air to enter the bottle upon the application of negative pressure  within the bottle.  An automated mechanism is provided for cutting and grasping  (e.g.,  utilizing  a  vacuum  mandrel)  a  beam  spring comprising a predetermined length of a band of flexible material.  The  vacuum mandrel  is then  inserted  into  the  bottle adjacent the substantially cylindrical internal portion such that upon release of the vacuum the beam spring expands against the substantially cylindrical internal surface of the bottle such that central portion of the beam spring is adjacent the aperture.  A method and apparatus for inserting the flexible bag into the outer bottle of the squeeze pump package is also provided.
Patent CA-2098347-A1 (CA)
Title: Apparatus for controlling file retrieval
Inventor: KUBOTA KAZUTO
IPC: G06K17/00
Filed: 1993-06-14
Abstract: Abstract A file retrieval controlling apparatus comprises a retriever proper that retrieves and transmits a retrieval identifying data based on a retrieval instruction input from outside, a retrieval unit 40 having an identifying data storage circuit 52 that holds a set of retrieval identifying data allocated to individual binders, a compa-ring circuit 52 that compares the received retrieval iden-tifying data with the set of data stored in the identify-ing data storage circuit 52 and outputs a coincidence signal when a matching data is found, a response signal transmitting circuit 53 that actuates an externally recog-nizable light-emitting diode 48 according to the coinci-dence signal and outputs a response signal, contacts 41 and 42 connected to feeder lines to feed electricity to the retriever proper, memory and comparator and contacts 43 and 44 connected to signal lines and attached to each binder, and a file container having feeder lines disposed parallel to each other along the row of binders and signal lines to transmit the signals from the retriever proper and the retrieval unit.    When the retriever proper sends a retrieval identi-fying data through a transmission line to the retrieval units 40 that are constantly powered by an external power supply and on stand-by, the light-emitting diode 48 of a retrieval unit conforming to the transmitted data goes on.          Thus, a binder containing the desired file can be readily located by finding the glowing display.  Besides, the retriever proper can confirm the presence of the binder conforming to the retrieval identification data based on a response signal the retrieval unit initiates when the display goes on.  Only missing files can be detected by transmitting an identifying data for inspection demanding a broadcast response.
Patent CA-2099028-A1 (CA)
Title: Method of recognizing symbols differing from reference symbols by affine transformations
Inventor: SINDEN FRANK W
IPC: G06T7/60
Filed: 1993-06-23
Abstract: METHOD OF RECOGNIZING SYMBOLS DIFFERING FROM REFERENCE SYMBOLS BY AFFINE TRANSFORMATIONS Abstract An unknown symbol handwritten on a digitizing tablet is compared with symbols in a predefined "alphabet" or library of model symbols and the closest match chosen, taking into account all or some subset of affine transformations of the unknown symbol with respect to the alphabet symbols. A sequence of samples of the pen position is recorded while a symbol is being written on a digitizing tablet. The samples form a vector, which is then translated so that the centroid of the symbol lies at an origin. The comparison involves finding the minimum "distance"between the vector for the unknown symbol and any vector that can be obtained bylinear transformations of the vectors for the model symbols. The model vector for which the minimum such distance can be obtained indicates the alphabet symbol the writer most likely intended to write. Alternative embodiments are described in which the types of linear transformations allowed are restricted.
Patent CA-2099495-A1 (CA)
Title: Field thrasher
Inventor: QUIMBY E DEAN
IPC: A01F5/00
Filed: 1991-12-31
Abstract: A field thrasher (10) includes a housing assembly (22) and a thrashing assembly (24). The housing assembly (22) includes an upper, thrashing enclosure (32) with a mouth opening (34) and a chaffe discharge opening (38). A lower, collection enclosure (33) is mounted below the thrashing enclosure (32) and includes a grain discharge opening (36), an air discharge opening (80) and a chaffe discharge opening (38). A spout (46) is mounted on the thrashing enclosure (32) in communication with the mouth opening (34). The thrashing assembly (24) includes a flail subassembly (50) comprising a rotor shaft (106) rotatably mounted in the thrashing enclosure (32) and tines (64) extending outwardly from the rotor shaft (106). A drive subassembly (40) includes a motor (42) drivingly coupled to the rotor shaft (106) and mounted on top of the thrashing enclosure (32). A fan subassembly (103) is mounted in a fan compartment (41) at an upper end of the thrashing enclosure (32) and provides an airflow through the housing (22).
Patent CA-2100489-A1 (CA)
Inventor: SCHULZ REINHARD
IPC: B25D17/08
Filed: 1993-07-14
Abstract: The clamping shank 1 of a chisel-cutting and/or percussion boring tool bits comprises stop faces effective in axial direction and in circumferential direction.  Entrainment faces 2, open towards the free end of the clamping shank 1 are located upstream of these stop faces in direction of the cutting area.  The radial dimension r of the essentially radially extending entrainment faces 2 is greater than their axial dimensions a.  In cooperation with an appropriately designed tool bit receptacle, the entrainment faces 2 can carry such a large share of the torque, that the stop faces are effectively relieved or unloaded.
Patent CA-2101303-A1 (CA)
Title: Production of high titania slag from ilmenite
Inventor: DENTON GLEN M
IPC: C22B34/12
Filed: 1993-07-26
Abstract: A process is provided for the production of a titanium rich slag and pig iron from ilmenite. The ilmenite is fed continuously, together with carbonaceous reductant, and in the absence of fluxes, to the molten bath of a circular d.c. arc furnace, preferably a plasma arc furnace, wherein the molten bath forms the anode and one or more electrodes in the furnace roof form the cathode.    The feed materials are preferably preheated using heat contained in the off-gases from the process.      Titanium rich slag which can be used as the feed to a chlorine based titanium dioxide production process is recovered continuously or intermittently and pig iron is tapped off as a by-product.
Patent CA-2103138-A1 (CA)
Title: Treatment of sleep disorders by nerve stimulation
Inventor: TERRY REESE S JR
IPC: A61B5/0476
Filed: 1992-05-01
Abstract: Method and apparatus (10) for treating and controlling sleep disorders by detecting (37) the presence of the sleep disorder under treatment, and, in response, selectively applying a predetermined generated (12-17, 19, 23) electrical signal to the patient's vagus nerve for stimulation thereof to alleviate the sleep disorder under treatment. The method and apparatus includes several techniques for detecting (37) the presence of the sleep disorder under treatment, such as sensing the patient's EEG activity in the case of insomniac and hypersomnia patients, or detecting a sudden nodding of the head in the case of narcoleptic patients, or sensing the cessation of respiration in the case of sleep apnea patients.
Patent CA-2109915-A1 (CA)
Inventor: MCDONALD RODERICK A
IPC: C08G8/28
Filed: 1993-11-24
Abstract: ABSTRACT The present invention is directed to a phenolic resin composition useful for preparing a binder for reinforced composites, to a binder for reinforced composites made using the phenolic resin composition, and to a reinforced composite made using the binder. The phenolic resin composition of the present invention contains an aqueous mixture of: (a) a resole formed by reacting phenol with formaldehyde in the presence of an ortho directing catalyst at a mole ratio of formaldehyde to phenol ranging from about 0.7:1 to about 3:1 and (b) a water-soluble borate, wherein the composition contains at least about 0.02 equivalent of the ortho directing catalyst per mole of phenol, has a pH at least about 7 and contains from about 0.02 to about 0.5 mole borate per mole of phenol. When the ortho directing catalyst has a cation that forms an insoluble material with a borate anion, the cation is removed after the resole is formed and prior to adding the water-soluble borate.
Patent CA-2112739-A1 (CA)
Title: Pad for use in scanning data stored on a flat surface
Inventor: WOYDICH HORST
IPC: H04N1/00
Filed: 1992-07-03
Abstract: A B S T R A C T   The invention concerns a pad for use in scanning data stored on a flat surface, for subsequent feeding to data-processing equipment, the pad including means which can be detected by the scanner (6) and which are designed to be compared with certain scanning-process parameters, and/or a device for controlling the movements of the scanner.
Patent CA-2113440-A1 (CA)
Inventor: MOTZKO ANDREW R
IPC: B05C17/03
Filed: 1992-07-08
Abstract: A solid state electronic motor power control circuit for portable paint pumps having a MOSFET power control device and an operational amplifier connected to the MOSFET to selectively operate as a switch driver in a first state and as a linear gain amplifier in a second state. The operational amplifier has a feedback path from the motor to compensate for motor load variations.
Patent CA-2120972-A1 (CA)
Title: Slope and skew hanger connectors
Inventor: SAHNAZARIAN GEORGE
IPC: E04B7/06
Filed: 1994-04-11
Abstract: A sheet metal slope and skew hanger connector has first and second side support members located at opposite sides of a backplate and being bendable relative to the backplate. Each of the side support members is formed with a pair of parallel ribs extending along a marginal edge portion thereof and with nail holes in each of the ribs to facilitate nailing of the connector to a first wood member, the nail holes extending through the connector at laterally outermost sides of the ribs. The connector includes a seat base extending from a bottom portion of the backplate for supportingly engaging an underside of a second wood member, with a pair of seat sides extending from opposite sides of the seat base, and a pair of tab members spaced apart from one another with a portion of the backplate therebetween, with nail holes in the tab members to facilitate nailing of the tab members to the opposite side faces of the second wood member.
Patent CA-2131401-A1 (CA)
Title: Methyl tertiary butyl ether process
Inventor: KRUSE CHARLES J
IPC: C07C41/42
Filed: 1994-09-02
Abstract: Methyl tertiary butyl ether (MTBE) is formed by reaction of methanol with tertiary butyl ether in two catalyst beds.  A feedstock mixture comprising methanol and tertiary butyl alcohol in a molar ratio of 2 to 3 moles of methanol per mole of tertiary butyl alcohol is reacted in a first etherification reaction zone at a liquid hourly space velocity of 1 to 10 volumes of feedstock mixture per volume of catalyst per hour.          A first reaction product mixture is fractionated to remove MTBE as an overhead fraction.  The bottoms fraction comprising unreacted methanol and tertiary butyl alcohol is passed to a second etherification reaction zone at a liquid hourly space velocity of 0.5 to 4.  A second reaction product mixture is fractionated to recover additional MTBE.
Patent CA-2132246-A1 (CA)
Title: Vehicle flag display device
Inventor: TURNER VEVETTE L
IPC: G09F17/00
Filed: 1994-09-16
Abstract: The present invention provides for a vehicle flag system for removably displaying a flag from a motor vehicle.  The system comprises a flag, a flag mast and a mounting means for releasably holding the flag mast and releasably attaching to the side window of a vehicle.  The flag mast supports the flag at an upper end thereof and is provided at the lower end with at least one threaded region. The mounting means includes a socket for receiving the lower end of the flag mast and having at least one threaded region complementary to and releasably engaging the threaded region of the lower end of the flag mast.  The flag mast is releasably attached to the mounting means by inserting the lower end into the opening of the mounting means and thereafter rotating the flag mast to bring the threaded region of the lower end into releasable engagement with the complementary threaded region of the opening.
Patent CA-2140919-A1 (CA)
Inventor: MOELLERING DAVID J
IPC: B26F1/00
Filed: 1993-07-29
Abstract: A ball lock punch and die retainer comprises a single piece body (10) of high strength through hardened tool steel having a relieved (30) flat bottomed (24) bore-hole (22) for the punch. The exterior sidewall (40) of the retainer opposite the end having the punch borehole (22) is substantially half-cylindrical.
Patent CA-2142109-A1 (CA)
Title: Roofing tiles
Inventor: GRIBBLE MEIRION
IPC: E04D1/16
Filed: 1993-08-09
Abstract: A roofing tile (1) having longitudinal and lateral edge portions.  At least one corrugated edge surface defines sawtooth configurations (7, 8) in which the peaks are spaced from one another in the respective longitudinal or lateral direction. The corrugated edge surface is capable of interlocking a complementary corrugated edge surface provided on an adjacent similar tile.
Patent CA-2144588-A1 (CA)
Title: Acyclic chelating agents based on aminodialkylphosphoric oxides for the preparation of technetium or rhenium complexes
Inventor: STAHL WILHELM
IPC: A61K51/00
Filed: 1995-03-14
Abstract: Acyclic chelating agents based on aminodialkylphosphoric oxides  for  the preparation of  technetium or rhenium complexes The invention relates to acyclic chelating agents based on aminodialkylphosphoric oxides of the formula (I)                  (I).     The compounds according to the invention are used for the labeling of substances, in particular with radioactive technetium or rhenium isotopes. These compounds are also used as a diagnostic or therapeutic, and in the form of a test kit for the detection of tumors.
Patent CA-2146817-A1 (CA)
Inventor: GAVIN PATRICK M
IPC: D04H13/00
Filed: 1995-04-11
Abstract: An improved fibrous glass insulation assembly is disclosed. The insulation assembly includes at least one fibrous glass body enclosed by a vapor barrier plastic outer layer or by a bag or package. A desiccant is provided adjacent the fibrous glass body to remove moisture.
Patent CA-2150012-A1 (CA)
Title: Process for producing lignin-containing polymers
Inventor: HUETTERMANN ALOYS
IPC: C08H7/00
Filed: 1994-09-20
Abstract: In order to produce polymers that contain lignin and organic compounds, lignin is polymerised with organic compounds that contain at least 3 carbon atoms, as well as oxygen, nitrogen and/or multiple bond functions, in the presence of radically oxidising enzymes and oxidising agents that form their substrate.
Patent CA-2150148-A1 (CA)
Title: Non-binary pulse width modulation for spatial light modulator with split reset addressing
Inventor: DOHERTY DONALD B
IPC: G02B26/08
Filed: 1995-05-25
Abstract: A method of implementing pulse-width modulated image display systems (10,  20) with a spatial light modulator (SLM)  (15) configured for split-reset addressing.   As in conventional PWM methods, the frame period is divided into a number of time slices.  However, the total number of time slices and the allocation of time slices among pixel data is determined by the number of times that pixel data is delivered to the SLM (15) rather than by binary patterns.
Patent CA-2150335-A1 (CA)
Title: Cleaning device for sand, having a distributor for suspended substances
Inventor: POS JACOBUS
IPC: B03B5/00
Filed: 1995-05-26
Abstract: In a cleaning device for sand, comprising a container which has an inlet for a water/sand suspension and a pure water outlet, as well as laminae arranged in the container, said laminae having wavy convex and concave areas, and a screw conveyor  in the  bottom of  the  container,  the  invention proposes a distributor for suspended substances rising from the container bottom, whereby the distributor has a number of openings for the suspended substances and is situated between the screw conveyor and the laminae.