baber/WOPTO huggingface dataset:
Patent CA-1280196-C (CA)
Title: Avanlanche photodiode
Inventor: WEBB PAUL P
IPC: G01J1/02
Filed: 1987-07-17
Granted: 1991-02-12
Abstract: AVALANCHE PHOTODIODE Abstract of the Disclosure The invention relates to an avalanche photodetector having a charge-multiplication region which is spatially separated from the detector surface.  This photodetector includes a light-absorptive region, an active region overlying the absorptive region forming a heterojunction therebetween.  The photodetector includes a central zone which has a greater concentration of conductivity modifiers than the remainder of the active region and is located in the active region extending into the absorptive region.  A cap region overlies the active region and has the opposite conductivity type.  The cap region extends a greater distance in the lateral direction than the central zone.  A photodetector having a central zone extending across the heterojunction between the active region and light absorptive region have exhibited response times comparable with those of photodetectors having a quaternary layer located between the active region and the absorptive region. However, the photodetector of the present invention does not require the hard-to-grow quaternary layer.
Patent CA-1287980-C (CA)
Title: Innovative press bending
Inventor: FRANK ROBERT G
IPC: C03B35/14
Filed: 1987-12-01
Granted: 1991-08-27
Abstract: ABSTRACT           A press bending apparatus includes a shaping station having an upper mold with a shaping surface having a generally concave downward elevational configuration and a lower mold with an apertured shaping surface complementing the shaping surface of the upper mold. A vacuum shuttle transfers heat softened glass sheets from a heating furnace to the shaping station where it deposits the glass sheets on the lower vacuum mold.  The glass sheet is shaped between the molds.  A rotating arrangement rotates the lower mold and the shaped glass sheet held thereagainst by vacuum from a first position wherein the shaping surface of the lower mold faces upward to a second position wherein the shaping surface of the lower mold faces downward. The shaped glass sheet is the deposited on a tempering.  A rotating arrangement maintains vacuum in the lower mold as the mold rotates.
Patent CA-1304178-C (CA)
Title: Polyurethane compounds used with a calendering process for the production of biodegradable materials
Inventor: AIME JEAN-MARC
IPC: C08L75/06
Filed: 1988-02-09
Granted: 1992-06-23
Abstract: A substance based on polyurethane from which biodegradable materials can be obtained by rolling comprises, as well as a polyurethane resin serving as its essential constituent, a carbohydrate, at least one second thermoplastic polymer which is miscible in the molten state with the polyurethane resin and/or at least one third biodegradable polymer chosen from among biodegradable aliphatic polyesters, preferably of the same nature as the polyurethane resin used.
Patent CA-1312622-C (CA)
Title: Intermediate compounds usable for the preparation of herbicides
Inventor: BOTTANET BERNARD
IPC: C07F9/38
Filed: 1988-02-17
Granted: 1993-01-12
Abstract: ABSTRACT INTERMEDIATE COMPOUNDS USABLE FOR THE PREPARATION               OF HERBICIDES     The invention relates to compounds of formula:                               in which R4 is a group which can be hydrogenolyzed, R1 is a hydrocarbon group and R is a hydrogen atom or a hydrocarbon group, and X- is an HSO?, Cl-  or R7SO? anion, to their preparation by the hydrolysis of the compounds of formula:                               in which R2 and R3 are alkyl, cycloalkyl or aralkyl groups linked to the oxygen via a secondary carbon, and to their use in the preparation by hydrogenolysis of herbicides.
Patent CA-1310897-C (CA)
Title: Method and apparatus for transversely cutting strips of deformable material
Inventor: WEYAND HARLEY P JR
IPC: B26D7/00
Filed: 1988-02-23
Granted: 1992-12-01
Abstract: ABSTRACT OF THE DISCLOSURE       An apparatus and improved method for transversely cutting strips of deformable material with a rotating cutting blade which is moved generally transversely across the strip at a predetermined rake angle and bevel angle.  A vacuum applied to certain chambers of a platen draws the strip firmly against a supporting structure at two locations on opposite sides of a cutting line during the cut cycle.   A lubricant is sprayed through nozzles onto the blade as it cuts the strip and blow-off nozzles remove excess lubricant during the cut and return cycles of the blade to prevent contamination of the cut strip edges.  A release bar assists in disengaging the strip from the platen after the strip is cut.   Grippers remove the cut strip and then an input conveyor advances the remaining strip toward the cutting line where the grippers pull the strip forward to a predetermined position for the next cut cycle. The design of the cutting blade and its speed of rotation and transverse movement across the strip in combination with the lubrication of the blade and removal of excess lubricant provide cut strip ends relatively free of contamination for subsequent joining on a drum as in a tire building process.
Patent CA-1337708-C (CA)
Title: Adaptive multivariate estimating apparatus
Inventor: THOMSON DAVID LYNN
IPC: G10L25/93
Filed: 1988-02-29
Granted: 1995-12-05
Abstract: Apparatus for detecting a fundamental frequency in speech in a changing speech environment by using adaptive statistical techniques. A statistical voice detector detects changes in the voice environment by classifiers that define certain attributes of the speech to recalculate weights that are used to combine the classifiers in making the unvoiced/voiced decision that specifies whether the speech has a fundamental frequency or not. The detector is responsive to classifiers tofirst calculate the average of the classifiers and then to determine the overallprobability that any frame will be unvoiced. In addition, the detector using a statistical calculator forms two vectors, one vector represents the statistical average of values that an unvoiced frame's classifiers would have and the other vector represents the statistical average of the values of the classifiers for a voiced frame. These latter calculations are performed utilizing not only the average value of the classifiers and present classifiers but also a vector defining the weights that are utilized to determined whether a frame is unvoiced or not plus a threshold value. A weights calculator is responsive to the information generated in the statistical calculations to generate a new set of values for the weights vector and the threshold value which are utilized by the statistical calculator during the next frame. Anunvoiced/voiced determinator then is responsive to the two statistical average vectors and the weights vector to make the unvoiced/voiced decision.
Patent CA-1316323-C (CA)
Title: Vapor circulation apparatus
Inventor: NORMAN RICHARD O
IPC: A61L9/04
Filed: 1988-05-13
Granted: 1993-04-20
Abstract: ABSTRACT     A vapor circulation apparatus. The vapor circulation apparatus has a housing with an inlet air opening and an outlet air opening and mounted in the housing is a fan for inducing air flow through the housing and a container of liquid to be evaporated. A dosing element for holding a predetermined volume of the liquid for evaporation is periodically inserted into the container to withdraw a predetermined volume of liquid to be evaporated and after the dosing element is withdrawn, the container is resealed.
Patent CA-1280834-C (CA)
Title: Telephone line interface circuit
Inventor: MOISIN MIHAIL S
IPC: H04M19/00
Filed: 1988-05-25
Granted: 1991-02-26
Abstract: TELEPHONE LINE INTERFACE CIRCUIT          Abstract of the Disclosure A telephone line circuit transformer couples tip and ring leads of a telephone line to a telephone facility.  Tip and ring transformer windings are connected in series with the respective tip and ring leads, tip and rings feed resistors and terminals of a battery power source for supplying energizing current to the telephone line.  A capacitor is connected between a junction of the tip winding and the tip feed resistor and a junction of the ring winding and the ring feed resistor.  A compensating circuit is connected to drive a compensating winding in current opposing relationship with respect to differential alternating current signals in the tip and ring windings and being within a range of voice frequencies within which an impedance of the capacitor is significantly shunted by the feed resistors.
Patent CA-1329601-C (CA)
Title: Cardiotonic tricyclic oxazolones
Inventor: JONES WINTON D
IPC: C07D498/04
Filed: 1988-05-25
Granted: 1994-05-17
Abstract: ABSTRACT The present invention relates to tricyclic oxazolones of the formula wherein Q is a divalent sulfur or oxygen atom; one of X and Z is an oxygen atom and the other is an imino group; and n is O or the integer 1 or 2; which enhance myocardial contractile force and are useful as cardiotonics in the treatment of heart failure.
Patent CA-1331496-C (CA)
Inventor: CALLENS ROLAND
IPC: C07C277/00
Filed: 1988-06-09
Granted: 1994-08-16
Abstract: The compounds comprising a tetraphenylborate ion and a guanidine functional group correspond to the general formula: 
<IMAGE>
 in which R denotes an organic radical containing at least one other amine functional group. 
<??>These compounds are employed as chemical synthesis intermediates, especially in the synthesis of peptides.
Patent CA-1309799-C (CA)
Title: Propylene polymerization process
Inventor: ALLEN GEORGE C
IPC: C08F4/64
Filed: 1988-07-07
Granted: 1992-11-03
Abstract: NOVEL PROPYLENE POLYMERIZATION PROCESS       ABSTRACT      A novel highly efficient process is disclosed for the produc-tion of substantially amorphous ethylene-propylene copolymers.          The polymers have properties which make them applicable for use, e.g., as hot melt adhesives, as blending components in roofing materials, and as cable and wire flooding agents.
Patent CA-1309253-C (CA)
Title: Process to induce desiccation tolerance in somatic embryos
Inventor: MCKERSIE BRYAN D
IPC: A01C1/00
Filed: 1988-07-19
Granted: 1992-10-27
Abstract: ABSTRACT OF THE DISCLOSURE      A process for inducing desiccation tolerance in an in vitro formed plant embryo to enable production of viable artificial seeds is disclosed.  The process comprises culturing in vitro plant embryos, stimulating the embryos to proceed through globular and a heart shaped stage into an elongate-torpedo shaped stage and early cotyledon stage, inducing the embryos as early as the torpedo-shaped stage with a source of abscisic acid at an effective concentration of abscisic acid and for a sufficient period of time to cause expression of desiccation tolerance which includes change in cellular metabolism, electron transport processes and oxidation-reduction reactions in the embryos and drying the induced embryos to provide stable viable embroys.
Patent CA-1290031-C (CA)
Title: Terminal protector for circuit board connector
Inventor: PITTMAN ROBERT B
IPC: H01R13/443
Filed: 1988-08-08
Granted: 1991-10-01
Abstract: ROBERT B. PITTMAN and                       IEH-13 MICHAEL OFFERMAN          TERMINAL PROTECTOR FOR CIRCUIT BOARD CONNECTOR        ABSTRACT           A protector for use with a circuit board connector having exposed terminals to be electrically connected to terminal pads on an inserted circuit board, the protector partially housing the individual terminals of the connector, thereby to maintain them separated and properly located and insulate them against distortion and damage during handling, shipping, soldering and inserting the circuit board.  The protector has walls inserted between contacts, and preferably two cooperating protector halves are utilized, one inserted from each side of the connector.
Patent CA-1332358-C (CA)
Inventor: HORROBIN DAVID F
IPC: A61K31/19
Filed: 1988-08-24
Granted: 1994-10-11
Abstract: Abstract Nutritional supplement There are provided lithium-containing nutritional supplements, e.g. foodstuffs, multi-vitamin/mineral preparations and parenteral and enteral alimentation solutions containing physiologically tolerable lithium compounds.
Patent CA-1334007-C (CA)
Title: Photoprotection compositions comprising sorbohydroxamic acid
Inventor: CHATTERJEE RANJIT
IPC: A61K8/44
Filed: 1988-10-19
Granted: 1995-01-17
Abstract: Disclosed are pharmaceutical compositions comprising sorbohydroxamic acid, or pharmaceutically-acceptable salts thereof, which are useful for topical application to prevent damage to skin caused by acute or chronic UV exposure. Combinations of sorbohydroxamic acid together with tocopherol sorbate and/or sunscreens are also disclosed.      Also disclosed is a method for using these compositions topically, prior to UV exposure, to prevent damage to skin caused by acute or chronic UV exposure.
Patent CA-1301190-C (CA)
Inventor: LAIRD KEITH A
IPC: B01J38/00
Filed: 1988-10-24
Granted: 1992-05-19
Abstract: ABSTRACT        In the hydroformylation of alkenes to aldehydes, rhodium is recovered from the stripped overhead of the hydroformylation reactor by condensing the overhead, removing the bulk of the aldehyde product from the condensed overhead, stripping the residue which remains with nitrogen gas to remove minor amounts of highly volatile aldehyde product remaining in the residue and redistilling the residue to remove components from the condensed overhead which are lower boiling than the catalyst components.  The catalyst components including rhodium and phosphine ligand are returned to the hydroformylation reactor.
Patent CA-1327784-C (CA)
Title: Process for the production of polyethylene with a broad and/or bimodal molecular weight distribution
Inventor: SAMUELS SARI-BETH
IPC: C08F10/02
Filed: 1988-10-28
Granted: 1994-03-15
Abstract: PROCESS FOR THE PRODUCTION OF POLYETHLENE WITH A BROAD AND/OR BIMODAL MOLECULAR WEIGHT DISTRIBUTION               Abstract of the Invention A process for the production of an ethylene homopolymer or copolymer comprising passing ethylene with or without at least one alpha-olefin comonomer having 3 or more carbon atoms into contact with a mixed catalyst system, under polymerization conditions, said mixed catalyst system comprising:         (a)  the reaction product of (i) a vanadium halide having the formula VX3 wherein X is chlorine, bromine, or iodine and each X is alike or different; (ii) a modifier having the formula BX3or AlR(3-a)Xa wherein X is as defined above; R is an alkyl radical having 1 to 14 carbon atoms; each R is alike or different; and a is 0, 1, or 2  and (iii) an electron donor, which is a liquid Lewis base in which the vanadium halide and modifier are soluble;              (b)  one of the following:    (i)  a complex having the formula ZrMgbXc(ED)d wherein X as defined above; ED is an electron donor, which is a liquid Lewis base in which the precursors of the complex are soluble; b is a number from 1 to 3; c is a positive number equal to or less than 4+2b; and d is a number from 4 to 10; or (ii)  a vanadium oxy compound having the formula VOX3, VOX2, VOX, or VO2X wherein X is as defined above, or VO(OR)3 wherein R is a monovalent hydrocarbon radical having 2 to 10 carbon atoms and each R can be alike or different, wherein the vanadium halide and the vanadium oxy compound are supported;              (c)  a hydrocarbyl aluminum cocatalyst; and (d)  a halocarbon promoter having the formula ReCX(4-e) wherein R is hydrogen or an unsubstituted or halo substituted alkyl radical having 1 to 6 carbon atoms; each R is alike or different; X is chlorine, bromine, iodine, or fluorine; each X is alike or different; and e is 0, 1, or 2 provided that, if no fluorine is present, e is 2.
Patent CA-1320021-C (CA)
Title: Apparatus and method for automatically justifying, assembling, and binding sheets into books
Inventor: ABILDGAARD WILLIAM H
IPC: B42B5/08
Filed: 1988-11-01
Granted: 1993-07-13
Abstract: ABSTRACT OF THE DISCLOSURE      Male and female book binding strips are packaged in cassettes and the respective cassettes are stacked in male and female hopper stations.   Punched sheets are deposited in a staging station.   The components of  the  book  are  then  assembled  in  an  assembly station.   Thus the stack of sheets is fed onto one jaw and one male strip is fed onto that jaw while a female  strip  is  fed  onto  the  opposite  jaw superimposed above the first-mentioned jaw.  The two jaws are moved toward each other until the stack  is loosely held therebetween.   Thereupon the jaws are pivoted to vertical position, the stack resting on a base plate attached to one one jaw.  The stack is jogged so that the holes in the sheets are aligned with each other and with the holes in the female strip.  The male strip is pushed inward toward the stack,  the studs fitting through the holes in the sheets and through the female strip.   The assembled stack and strips are then moved into a bind station where the strips are compressed together, excess stud length cut off and rivet heads formed on the severed ends of the studs.
Patent CA-1311822-C (CA)
Title: Optical component for fiber-optic transmission systems
Inventor: MROZYNSKI GERD
IPC: H04Q3/52
Filed: 1988-11-23
Granted: 1992-12-22
Abstract: ABSTRACT The present invention relates to optical components for fiber-optic transmission systems,  such as attenuation elements, filters and power dividers, comprising at least two supports for the fibers and an adjusting member movable therebetween.  The invention provides an optical component of this kind suitable for remote control by providing that the supports are formed as guide plates; that the adjusting member is formed as an adjustment plate,  composed of dielectric material, which is movable in a guide space formed between the guide plates; and that at least one support plate is provided with at least two electrode surfaces connected to a control system for voltage supply so as to build up a dielectric field.
Patent CA-1325003-C (CA)
Title: Ziegler-natta catalyst and a process for its preparation
Inventor: DAIRE ERICK
IPC: C08F4/62
Filed: 1988-11-28
Granted: 1993-12-07
Abstract: ABSTRACT OF THE DISCLOSURE      ZIEGLER-NATTA CATALYST AND A PROCESS FOR ITS PREPARATION      A process for the preparation of a solid catalyst of the Ziegler-Natta type comprises precipitating the solid catalyst in a liquid hydrocarbon medium by reacting (A) a solution of a soluble magnesium alkoxide and (B) a transition metal halide which is a halide of Ti (IV), a halide of V (IV) or a halide of VO (III) in the presence of (C) at least one transition metal alkoxide which is free from halogen and soluble in liquid hydrocarbon.  The precipitated solid catalyst consists of spheroidal particles having a mean diameter by mass of from 10 to 70 microns and a narrow particle size distribution such that the ratio of mean diameter by mass to the mean diameter by number is greater than 1.2 and smaller than 2Ø
Patent CA-1322587-C (CA)
Title: Method for recording multi-phase flows through a transport system
Inventor: HOPE BJORN R
IPC: G01N29/02
Filed: 1988-12-15
Granted: 1993-09-28
Abstract: ABSTRACT OF THE DISCLOSURE A method for determining the flow situation in a transport system where the flow medium occurs in multiphase and is conducted through a structural detail such as a choke valve, which acts on the flow of the medium and produces turbulence causing acoustic energy signals which are generated in and immediately close to the structural detail.  The acoustic energy signals are sensed by one or a plurality of acoustic sensors with an acoustic broad-band connection with the structural detail.  The sensor converts the energy signal to transmittable signals to a signal processing unit utilizing known signal  analysis  principles  to provide interpretable information on the actual flow situation and the flowing medium which is influenced by the structural detail.  The structural detail to which the acoustic sensor means is connected may be incorporated in the subsea production system.
Patent CA-1312931-C (CA)
Title: Environmental protection closure for wire splices, and method
Inventor: REUTER DONALD F
IPC: H02G15/18
Filed: 1989-01-16
Granted: 1993-01-19
Abstract: ABSTRACT OF THE DISCLOSURE An environmental closure and method are provided, for use in generating an environmental seal about wire splices or the like.  The preferred closure comprises a unitary construction having an outer, openable, shell with an internal biasing mechanism.   In use, viscous sealant material is positioned within the closure such that the biasing mechanism generally forces sealant material around a  junction to be  sealed and,  in particular,  between adjacent wires in such junctions.   In one application relatively highly viscous sealant material is utilized in association with junctions in a manner according to the present invention.   In another general application,  a relatively  low  viscosity  sealant  is  used;  the  low viscosity  sealant  being  generally  bordered  by  high viscosity sealant, to inhibit leakage outwardly from a closure during use.
Patent CA-1333759-C (CA)
Inventor: TAKUMA KEISUKE
IPC: C09B1/58
Filed: 1989-02-23
Granted: 1995-01-03
Abstract: A novel negative charge color toner composition for electrostatic charge development having good light resistance and copy sharpness        contains, as a dyestuff in a toner resin, a 1-amino-2-phenoxy- or 2-thiophenoxy-4-hydroxyanthraquinone whose phenoxy or thiophenoxy group is substituted and/or a 1,4-diamino-2,3-phenoxyanthraquinone whose phenoxy group is substi-tuted,  can be conventionally produced.
Patent CA-1327760-C (CA)
Title: Medical fail safe releasible locks and/or seals for capped centrifuge containers, cryogenic vials and the like
Inventor: JESSOP PAUL M
IPC: B65D43/04
Filed: 1989-03-01
Granted: 1994-03-15
Abstract: ABSTRACT OF DISCLOSURE    Fail safe externally-applied releasible locks and internally-disposed seals for capped centrifuge containers, cryogenic vials and the like to insure closure integrity against specimen loss in whole or in part and contamination, the containers with cap being suitable for use in centrifuging, boiling and freezing of liquid specimens and during shipping.
Patent CA-1337935-C (CA)
Title: Antibiotic derived from bacillus subtilis strains ncib 12375, 12376 and 12616 and related strains
Inventor: ROSSALL STEPHEN
IPC: C07G11/00
Filed: 1989-03-06
Granted: 1996-01-16
Abstract: The  invention  provides  a  novel  antibiotic  or antibiotic fraction and a process for producing it by culturing a suitable microorganism.  Among other defined properties,  the  antibiotic  has  a  protein  and  lipid content, a molecular weight of about 63,500 daltons and antibiotic  activity  against  fungi  and  gram-positive bacteria, but not against gram-negative bacteria.  It is useful for plant protection.
Patent CA-1291276-C (CA)
Title: Method of mounting a printed circuit board and securing the earthing to a casing
Inventor: HAKANEN PEKKA
IPC: H05K9/00
Filed: 1989-03-08
Granted: 1991-10-22
Abstract: ABSTRACT            Method of mounting a printed circuit board and securing the earthing to a casing. The method includes providing the printed circuit board with projecting parts and earth-ing means on at least one face, providing the casing with corresponding recesses, mounting the printed circuit board so that the projecting parts fit into the recesses to sup-port the board, attaching a flexible sealing strip of elec-trically conducting material, and placing a lid on said sealing strip, whereby said earthing means contact the casing and the sealing strip, securing the earthing con-nection