baber/WOPTO huggingface dataset:
Patent CA-2003547-A1 (CA)
Title: Perfectionnements apportes aux gants, doigtiers et analogue de protection et de manipulation et a leurs procedes de fabrication
Inventor: ORLIANGES LEO
IPC: A61B19/04
Filed: 1989-11-21
Abstract: La présente invention pourvoit un gant, protecteur ou doigtier ayant une surface extérieure et une surface intérieure adapté à l'usage des personnes oeuvrant dans le domaine médical et en recherche et ayant la propriété d'améliorer le glissement pour faciliter la mise du gant ou doigtier et pour protéger des microbes et autres agents pathogènes. Le gant ou doigtier comportant un matériau élastomère moulé ayant qui comprend des microcapsules. Les microcapsules pouvant se rompre ou se percer et comportant au moins un agent pharmacologique et dont la concentration croît progressivement de la surface extérieure vers la surface intérieure du gant ou doigtier, avec une concentration au niveau de la surface intérieure de 90 à 95 % du nombre total de microcapsules présentes dans le matériau élastomère. Les microcapsules au niveau de la surface intérieure constituant une surface de contact ondulée diminuant la friction et l'adhérence entre la peau et le gant, facilitant ainsi la mise et l'ajustement du gant ou doigtier ne comportant pas de microcapsules.
Patent CA-2003704-A1 (CA)
Title: Digital binarization circuit for conversion of image data
IPC: G06V30/162
Filed: 1989-11-23
Abstract: A digital binarization circuit for image data includes a background level detecting circuit which uses a video signal as a reference input for determining the background level of an image represented by the video signal, and outputs the background level as a first address signal.  A character level detecting circuit compares the video signal with a character level in a load decision comparator and loads the video signal as a character level when the signal is less than the reference level, and outputs the character level as a second address signal.  A memory circuit outputs a threshold value stored at an address designated by the first and second address signals to a comparator.  The optimum threshold value is outputted among prescribed threshold values stored in the memory circuit.  The comparator compares the digitized video signal with the optimum threshold value and outputs a binary signal corresponding to the comparison result.  Even for original documents with a dark background, noise is not liable to occur in the transmitted video signal, and a light character can appear clearly on the transmitted video signal.
Patent CA-2005023-A1 (CA)
Title: Enzyme-inhibiting urea derivatives of dipeptides, a process for the preparation thereof, agents containing these, and the use thereof
Inventor: RUGER WOLFGANG
IPC: A61K38/00
Filed: 1989-12-08
Abstract: Abstract of the disclosure Enzyme-inhibiting  urea  derivatives  of  dipeptides,  a process for the preparation thereof, agents containing these, and the use thereof The present invention relates to compounds of the formula I                                   (I) in which A and B denote, independently of one another, an amino acid, X    as desired can be absent or represents -O-, -S-, -CF2-, -CO- or -CHR8, p and q denote, independently of one another, 0, 1, 2, 3 or 4, and R1 to R4 are defined in the description, as well as the salts thereof.            The invention furthermore relates to a process for the preparation of the compounds of the formula I and to the use thereof as medicines.
Patent CA-2007001-A1 (CA)
Title: Method for fabricating buried waveguides
Inventor: COOPER ALFRED R
IPC: C03C21/00
Filed: 1990-01-02
Abstract: Abstract of the Disclosure A method for fabricating buried waveguides on a glass substrate which contains sodium ions includes the steps of masking the substrate, performing a field-assisted ion-exchange process at low temperature to form waveguides by exchanging silver ions for the sodium ions, and performing a field-assisted ion-exchange at low temperature to bury the waveguides by exchanging potassium ions.  In a preferred embodiment, the silver ions and the potassium ions are exchanged from eutectic melts.
Patent CA-2008069-A1 (CA)
Title: Constructional panels
Inventor: TAL DANNY
IPC: E04D3/361
Filed: 1990-01-18
Abstract: ABSTRACT      A constructional panel having first and second edge portions arranged  for  interconnection with respective second  and  first edge  portions  of  similar panels, the  first  and  second  edge portions  being configured for mating engagement at at least  two locations,  the  first edge portion including  a generally  flat portion  arranged to permit attachment of the edge portion to  an external  support  by  a  fastener  extending  through  the  flat portion,  the  mating  engagement of the first  and  second  edge portions  being  such  that the generally flat  portion  and  the fastener are covered by the second edge portion.
Patent CA-2008676-A1 (CA)
Title: Dental syringe tip and syringe holder therefor
Inventor: DRAGAN WILLIAM B
IPC: A61C5/06
Filed: 1990-01-26
Abstract: This disclosure is directed to a dental syringe and a disposable syringe tip for use therewith, and more particularly to an improved syringe tip constructed to minimize the entrainment of air by the material being extruded and to provide a dentist with a maximum of visibility during use. The syringe tip includes a cylindrical body portion to define a reservoir that is provided with a conically shaped, closed front end and a full opening at the other end, which is adapted to be sealed by a displaceable piston. The closed front end is provided with an internal frusto-conical chamber disposed in communication with an angularly offset discharge nozzle having its passageway at the inner end thereof disposed contiguous to the blunt end of the internally disposed frusto-conical chamber; and the disposable piston having a frusto-conical end portion to complement the shape of the internal front end of the syringe tip to enhance the complete evacuation of the material disposed within the syringe tip without the entrainment of any air.
Patent CA-2010331-A1 (CA)
Inventor: PETERSON JAMES O
IPC: C08J3/12
Filed: 1990-02-19
Abstract: PATENT APPLICATION OF     JAMES OLIVER PETERSON                         RAJIV HARSHADRAI NAIK                  GARY LEE LINDEN     FOR       LOW STRESS EPOXY ENCAPSULANT COMPOSITIONS DN 87-53 BWS/skm Abstract of the Disclosure A low stress additive system for epoxy encapsulants, and low stress epoxy encapsulants containing the low stress additive system are disclosed. The low stress additive system comprises composite organic polymer particles and liquid silicon-containing compounds, such as organopolysiloxanes. The epoxy encapsulants prepared with the low stress additive system display low stress, good flow, and do not exhibit excess resin bleed.
Patent CA-2011683-A1 (CA)
IPC: C08G75/0209
Filed: 1990-03-07
Abstract: Abstract Of The Disclosure Articles are blow-molded from a polyphenylene sulfide resin having a melt flow in a range of from about 1 to about 10 g/10 min., and preferably in a range of from about 4 to about 8 g/10 min.  When filler materials such as mica are added, the upper end of the acceptable melt flow range is raised  to about  15 g/10 min.   By maintaining mold tem-peratures in a range of from about 250° to about 400° F., and  preferably  from  about  275°  to  about  325°  F.,  the polyphenylene sulfide material in the blow-molded article is provided with a semi-crystalline structure, and is dimen-sionally stable at temperatures of at least 500° F.  Filler materials are preferably provided in a range of from about 10 to about 20 weight percent.
Patent CA-2015885-A1 (CA)
Title: Paper feeder
Inventor: TAJIMA AKIO
IPC: B65H3/52
Filed: 1990-04-27
Abstract: A paper feeder for a printer or the like comprises a pick-up roller for taking out the uppermost one of a stack of sheets stored in a sheet-feeding cassette, a feed roller positioned on the downstream side of the pick-up roller, a retard roller held in resilient contact with the feed roller, and a driving motor for rotating the retard roller in the opposite direction to the direction of rotation of the feed roller.  To reliably feed only one sheet, the driving motor is secured to a retard plate integral with a rockably supported arm, and the turning torque exerted by the driving motor on the retard roller is set to be smaller than the product of the coefficient of friction between one sheet being fed and the retard roller and the nip force with which the retard roller holds the sheet down, but larger than the product of the coefficient of friction between two sheets being fed and the nip force with which the retard roller holds the sheets down.  Alternatively, the driving motor is rockably mounted with the retard roller and has a plate attached thereto which is movable with the motor relative to a support structure upon which the retard roller and driving motor are rockably mounted.  An engagement member extends from one of the plate and the support structure and engages the other of the support structure and plate.
Patent CA-2016248-A1 (CA)
Title: Non-toxic mouldable play material
Inventor: DAGG RUSSELL M
IPC: C08L3/02
Filed: 1990-05-08
Abstract: NON-TOXIC MOULDABLE PLAY MATERIAL        ABSTRACT         A novelty item for children which may, for example, comprise a non-toxic composition comprising about 100 pounds of cornstarch, about 7 pounds of polypropylene glycol or glycerine, about 162 grams of calcium propionate and an F.D. & C. food colour or food colour mixture selected from the group consisting of:  (a) about 6.50 grams of Yellow No. 5; (b) about 2.00 grams of Blue No. 1 and about 2.00 grams of Red No. 3: (c) about 2.00 grams of Red No. 3; (d) about 0.75 grams of Blue No. l; and (e) about 8.25 grams of Yellow No. 5 and about 0.25 grams of Blue No. 1.  Such compositions can be mixed with water to form a slurry with the unusual property of being hard and mouldable when squeezed by hand but taking the form of a runny liquid when the grip is relaxed.     :    :       :
Patent CA-2016318-A1 (CA)
Title: Fire door window construction
Inventor: BAWA HARINDER S
IPC: E06B5/16
Filed: 1990-05-08
Abstract: ABSTRACT OF THE DISCLOSURE      A fire retardant window construction for a fire door comprises a trim strip having inner and outer members.          The inner member is of a high density incombustible mineral material or ceramic and is nailed in position to securely and uniformly hold the pane of glass in the door opening.  The outer trim member is of a fire retardant particle board and has an exposed wood veneer facing throughout.  An intumescent caulking compound is applied between an inner portion of the outer trim member and the pane of glass.
Patent CA-2019123-A1 (CA)
Inventor: STOKMAN RONALD J M
IPC: F27D1/14
Filed: 1990-06-15
Abstract: A ceramic gas burner for a hot-blast stove has a burner crown essentially composed of a plurality of shaped bricks which define terminal portions of at least one combustion air duct and at least one gas duct of said burner for flow of respectively combustion air and gas,  A simple and inexpensive structure is obtained when the bricks are of at most two principal types in respective layers.  The bricks of each type are identical, but may be of a subsidiary type of which two bricks combine to form one brick of the principal type.
Patent CA-2019310-A1 (CA)
Title: Non-volatile ram bit cell
Inventor: BENNETT DANIEL H
IPC: G11C14/00
Filed: 1990-06-21
Abstract: A memory cell comprising a bistable latch having first and second nodes, at least two non-volatile transistors (NV1, NV2) each having a source, a drain and a control gate, the control gates being connected to the first node (NODE 1) and one of the source and drain of each transistor being connected to the second node (NODE 2), each non-volatile transistor (NV1, NV2) further having a substrate and a floating gate between the control and the substrate, and switching means (N1, N2, TG1) for enabling the transistors to be checked in circuit.
Patent CA-2020689-A1 (CA)
Inventor: CHANG JOSEPH J
IPC: A61M5/158
Filed: 1990-07-09
Abstract: A catheter assembly is provided with a needle guard that slides slang the needle to shield the distal tip of the needle after the needle is withdrawn from a patient.      The needle passes through an aperture at the distal end of the needle guard, To prevent the backflow of blood through the aperture and onto the needle guard, a gasket is formed in the aperture about the needle. The gasket is formed with the needle in place by filling the aperture around the needle with adhesive. After the adhesive has substantially cured but before the adhesive has tightly bonded to the needle the needle guard is moved along the needle to prevent bonding of the adhesive to the needle.      The needle guard will thereafter slide along the needle with the needle passing through the formed-in-place gasket,
Patent CA-2022616-A1 (CA)
Title: Radiation curable polyolefin pressure sensitive adhesive
Inventor: BABU GADDAM N
IPC: C09J137/00
Filed: 1990-08-02
Abstract: Pressure sensitive adhesive compositions comprise one or more poly(alpha-olefin) homogolymers, copolymers, terpolymers, and tetrapolymers derived from monomers containing 6 to 10 carbon atoms and photoactive crosslinking agents. Radiation curing provides adhesive films having a superior balance of peel and shear adhesive properties. The pressure sensitive adhesive is useful in pressure sensitive adhesive tapes, in articles containing transfer adhesive films, and ass the bonding material between supports in a laminated structure.
Patent CA-2027032-A1 (CA)
Inventor: GOLDENBERG SHAUL
IPC: E06B3/50
Filed: 1990-10-05
Abstract: A carrier for a closure assembly having a track and a closure member, the carrier including a first portion slidably engageable with the trackand having means for pivotally supporting the closure member so that it may be pivoted away from the closure assembly, a second portion slidably engageable with the track and spaced from the first portion, and a member interconnecting the first and second portions whereby the first and second portions are adapted to remain engaged with the track whilst supporting the closure member both when it is pivoted away from the closure assembly and when it is slidable relative tothe track, wherein the interconnecting member is adjustable in length.
Patent CA-2027925-A1 (CA)
Title: Cylinder hone
Inventor: HUPPERT JAMES C
IPC: B24D9/06
Filed: 1990-10-18
Abstract: Abstract of the Disclosure A cylinder truing hone comprising a plurality of pressure members mounted in circumferentially spaced locations around a driven member for movement radially of the driven member and with pressure surfaces on the pressure members outermost.  An axially movable cam on the driven member is in engagement with the pressure members and can move them outwardly.  Abrasive coated sheet material extends over the pressure surfaces where it can be pressed into engagement with a cylindrical inner surface by movement of the cam, and a mechanism is provided for changing the portion of the abrasive coated sheet material extending over the pressure surfaces.
Patent CA-2028605-A1 (CA)
Title: Chemiluminescence assay of in vivo inflammation
Inventor: ALLEN ROBERT C
IPC: G01N33/566
Filed: 1990-10-25
Abstract: CHEMILUMINESCENCE ASSAY OF INFLAMMATION         Abstract of the Invention The presence or amount of inflammation of a patient is determined by comparing the extent of opsonin receptor expression on phagocytes of a patient with the maximum opsonin receptor expression inducible on phagocytes of the patient in vitro after stimulation with a receptor expression priming agent. Preferably, the state of inflammation of a patient is determined by contacting afirst portion of a phagocyte containing biological sample from the patient with an opsonified oxidative metabolism stimulating agent capable of eliciting metabolicactivation and with a chemiluminigenic substrate, contacting a second portion ofthe biological sample from the patient with an opsonin receptor expression priming agent, an opsonified oxidative metabolism stimulating agent capable of eliciting metabolic activation and a chemiluminigenic substrate, and then comparing the chemiluminescence response of the first and second portions of thesample as a measure of the immune response potential or state of inflammation ofthe patient. Phagocyte function is additionally quantitatively evaluated by measuring the phagocyte oxygenation capacity of a maximally opsonin receptor primed and stimulated biological sample of a patient, determining the specific oxygenation capacity to a set of controls representing the normal distribution of specific oxygenation capacity established from testing a large population. The phagocyte-specific oxygenation capacity is determined by contacting the sample with an opsonin receptor expression priming agent, an opsonified oxidative metabolism stimulating agent and a chemiluminigenic substrate, measuring the chemiluminescence response of the sample, determining the chemiluminescence response per phagocyte of the sample and comparing the response per phagocyte with that of the normal range of values. Kits and reagents are provided for use in the practice of the disclosed methods.
Patent CA-2030771-A1 (CA)
Inventor: GRENIER MAURICE
IPC: F25J3/02
Filed: 1990-11-23
Abstract: Procédé utilisant une installation de distillation d'air à double colonne, du type dans lequel de l'air à traiter, épuré de l'eau et du CO2 et refroidi au voisinage de son point de rosée, est injecté à la base de la colonne moyenne pression de la double colonne. Une première fraction de liquide riche, soutirée en cuve de la colonne moyenne pression, est détendue et envoyée dans un condenseur de tête d'une colonne de production d'argon impur reliée à la colonne basse pression de la double colonne. Une seconde fraction de liquide riche, soutirée à la partie inférieure de la colonne moyenne pression, est détendue et injectée en reflux dans la colonne basse pression. Selon l'invention, la seconde fraction de liquide riche est soutirée en un point intermédiaire de la colonne moyenne pression; et on forme un gaz résiduaire de l'installation à partir d'au moins une partie du liquide riche soutiré en cuve de la colonne moyenne pression. L'installation utilisée pour la mise en oeuvre de ce procédé permet de soutirer la seconde fraction de liquide riche en un point intermédiaire de la colonne moyenne pression et comporte des dispositifs auxiliaires pour former un gaz résiduaire de l'installation à partir d'au moins une partie du liquide riche soutiré en cuve de la colonne moyenne pression.
Patent CA-2035367-A1 (CA)
Title: Precursor polymer for ceramic coatings
Inventor: BANEY RONALD H
IPC: C04B41/50
Filed: 1991-01-31
Abstract: PRECURSOR POLYMER FOR CERAMIC COATINGS     ABSTRACT           This invention relates to a method of hydrolyzing hydridosilanes of the formula HSi(OR)3 to form a soluble resinous hydrolysate comprising a polymer having units of the formula HSi(OH)x(OR)yOz/2, wherein each R is independently an organic group which, when bonded to the silicon through an oxygen atom, forms a hydrolyzable substituent, x = 0-2, y = 0-2, z = 1-3, x + y + z = 3 and the average value of y over all of the units of the polymer is greater than 0.  The invention also relates to the soluble hydrolysates formed thereby as well as the method of using said hydrolysates to provide coatings on various substrates, including electronic devices, to form protective layers or inter-level dielectric layers in multilayered devices.
Patent CA-2038067-A1 (CA)
Title: Accessory
Inventor: BECK MICHAEL W
IPC: C06B33/00
Filed: 1991-03-12
Abstract: A delay device or detonator contains a delay composition comprising a consolidated, particulate mixture of silicon and a suitable oxidant, and a minor effective proportion of dispersed metal compound intimately incorporated therewith to serve as a reaction facilitating flux, and the metal compound may be selected from alkali metal salts such as sodium chloride, sodium sulphate, potassium sulphate; lead. monoxide, oxides of antimony such as Sb2O3, or Sb2O5, vanadium e.g. V2O5 or mixtures thereof.
Patent CA-2038488-A1 (CA)
Title: Process for optimizing corrosion protection of coated substrates
Inventor: OLSON ROGER A
IPC: C23C28/00
Filed: 1991-03-18
Abstract: PROCESS FOR OPTIMIZING CORROSION PROTECTION            OF COATED SUBSTRATES           ABSTRACT OF THE DISCLOSURE     The life of protective and/or wear resistant coatings which are applied to substrates, particularly metallic surfaces which are subject to corrosion, are extended by the deposition of  poly(p-xyxylene) which penetrates and plugs microscopic pores as small as 500 angstroms in the coating.  Even if the coating surface is polished or subject to wear through abrasion, the parylene has penetrated sufficiently deep into the pores forming an undisturbed protective barrier between the substrate and corrosive fluids.
Patent CA-2041993-A1 (CA)
Title: Exhaust gas discharge system for two-stroke internal combustion engine
Inventor: BLAIR ALAN J
IPC: F02B27/04
Filed: 1991-05-07
Abstract: ABSTRACT OF DISCLOSURE               Disclosed herein is a two stroke internal combustion engine comprising first, second, third, and fourth cylinders which fire in a predetermined sequence and which include respective first, second, third, and fourth exhaust ports which open and close in response to piston movement, and an exhaust gas discharge system communicating with the exhaust ports, including a duct portion, and being operable, in response to opening of one of the exhaust ports, to afford passage of exhaust gas from the one exhaust port to the exhaust gas discharge system so as to provide an outgoing positive acoustical pressure wave which travels in the duct portion and which arrives at the exhaust port of the previously fired cylinder prior to closure of the exhaust port of the previously fired cylinder and to provide a returning negative acoustical pressure wave which travels in the duct portion after substantial completion of the travel of the outgoing positive acoustical pressure wave in the duct portion and which arrives at the one exhaust port prior to closing of the one exhaust port.
Patent CA-2042022-A1 (CA)
Title: Condition responsive switching apparatus
Inventor: KELLY RONALD W
IPC: H01H35/26
Filed: 1990-06-14
Abstract: A condition responsive switching apparatus with an alarm feature for use in refrigeration appliances, such as freezers or the like.  The switching apparatus includes a contact operator which moves between first, second, and third positions in response to the pressure changes of a bellows.      The bellows pressure increases and decreases in response to changes in temperature sensed at the appliance. The apparatus includes a first set of control contacts to provide energization of a compressor and a second set of alarm contacts to provide energization of an alarm circuit. The contact operator has a first dog which opens and closes the control set of contacts as the operator moves through a snap action increment of travel between the first and second positions. An alarm spring opposes the travel of a second dog of the contact operator beyond the second position with a preload force until the excess of the snap action energy of the operator is dissipated. The alarm spring, thereafter, opposes the contact operator with a spring gradient until the operator reaches the third position and closes the alarm contacts. The closure of the alarm contacts causes the energization of an alarm circuit which signals that the appliance temperature is in excess of the cycling temperature and that the failure of a system component is likely to have occurred.