baber/WOPTO huggingface dataset:
Patent CA-2004806-A1 (CA)
IPC: C03B8/04
Filed: 1989-12-06
Abstract: Silica intended to form the core of an optical-fibre preform is deposited as an unvitrified soot inside a reaction tube,  and a non-aqueous solution of one or more dopant precursor is then introduced into the tube without removing the tube from the apparatus.  A first precursor may be for a dopant such as alumina to raise the refractive index of the layers formed by vitrification of the soot, and a second precursor for a dopant such as rare earth to improve the transmission  properties  of  the  preform  material.    The solution  may  be  introduced  and  removed  either  through branches on the tube, or by filling the tube, in each case without removing it from the lathe used to rotate the tube during deposition and vitrification.
Patent CA-2004861-A1 (CA)
Inventor: PARISH HARLIE A
IPC: A61K31/23
Filed: 1989-12-07
Abstract: The dermal use of non-irritating retinoids such as the esters and amides of 13-cis and 13-trans-retinoic acid for effecting the reduction and reversal of photoaging and skin cancer is disclosed. The retinoids having the formulae:                              wherein R is   ,            ,          ,       ,       ,        ,            ,   ,     ,           ,       ,   ,       ,      , and   wherein X is -H, -F, -Cl, -Br, -I, -OH, -OR, -OR',  ,  ,  , -CN, -NO2, -NH2, -NHR', or -NR'2; wherein n is a number from 1 to 5; wherein R' is H or any of the lower alkyls ranging from C1 to C6; wherein R" is  , -OR',  , or -R'; wherein each R~ is R' or the hydrocarbon backbone of fatty acids; and further, where there are two or more R', R", or R~ groups attached to the same carbon or nitrogen, each R', R", or R~ may be the same as or different from the other R', R", or R~ groups attached to that carbon or nitrogen,
Patent CA-2005154-A1 (CA)
Title: Method for purifying fibroblast growth factor protein
Inventor: KATO KOICHI
IPC: C07K14/50
Filed: 1989-12-11
Abstract: TITLE: METHOD FOR PURIFYING FIBROBLAST GROWTH FACTOR      PROTEIN                         ABSTRACT    Disclosed is a method for purifying a fibroblast growth factor (FGF) protein with use of a crosslinked polysaccharide sulfate.  The FGF protein is preferably a mutein, in which at least one human basic FGF-constituent amino acid is substituted by at least one different amino acid.  The crosslinked polysaccharide sulfate is preferably a crosslinked cellulose sulfate, a crosslinked agarose sulfate or a crosslinked dextran sulfate.  According to the present invention, FGF can be highly purified on a commercial scale, and pharmaceutical preparations containing the FGF protein can be advantageously formulated.
Patent CA-2009558-A1 (CA)
Inventor: MULLER WALTER
IPC: A61K9/70
Filed: 1990-02-08
Abstract: The invention relates to a therapeutic system for transdermal or transmucosal administration of active agents, consisting of an impermeable reverse layer, a two-layer reservoir, at least partly containing the active agent and consisting of parts which are separate from one another, and a protective layer, where the two reservoir parts
 (a) are arranged substantially parallel over one another,
 (b) are separated from one another by an intermediate layer which can be removed and is impermeable to the contents of the two reservoir parts,
 (c) contain either active agent, auxiliary or both, in concentrations not corresponding to the distribution equilibrium, in which the two reservoir parts are self-adhesive and are glued to one another partially via a mask, and the intermediate layer (b) is arranged between a reservoir part and the mask and is formed from folded films, which project at least partially over the surfaces of the reservoir parts. 
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Patent CA-2010328-A1 (CA)
Inventor: THOMPSON WILLIAM W
IPC: A61K38/27
Filed: 1990-02-19
Abstract: X-7473(OUS) Abstract The particle size of amorphous protein material is reduced to uniform particulates without protein decomposition or loss of activity by passing the material through a fluid-energy mill.
Patent CA-2010688-A1 (CA)
Inventor: DUFFIELD DAVID J
IPC: H04N5/45
Filed: 1990-02-22
Abstract: A channel sampler system, including a television signal tuner, displays an array of inset pictures on a display screen.  Each inset picture is a still video picture (i.e, freeze-frame) selected by tuning each of the channels in a scan list of channels.  A feedback signal is used to determine the point at which the channel is tuned, at which point a frame of video is received and stored, so that the television program sample freeze-frame image is taken from each active channel without undue delay.
Patent CA-2013554-A1 (CA)
Title: Method for removing nitrogen oxides from gases
Inventor: SCHMID PETER J
IPC: C01C1/18
Filed: 1990-04-03
Abstract: ABSTRACT          Method  for removing  nitrogen oxides  from  gases  in which,  at first,  the molar ratio between NO and NO2 is set to 1  in  said  gas  and  subsequently  the  nitrogen  oxides  are absorbed in  a  hydrous  ammonia  solution,  whereby  ammonium nitrate  is formed. In order to achieve the desired molar ratio in  a simple manner, it is intended for setting the molar ratio between  NO and NO2, to inject NO2 into the gas in a controlled manner,  said NO2  having been  formed by  the reaction between ammonium nitrate with a strong acid.
Patent CA-2014692-A1 (CA)
Inventor: DE GELIS PIERRE
IPC: C23C14/38
Filed: 1990-04-17
Abstract: PROCEDE DE COLORATION DE LA SURFACE DE MATERIAUX METALLIQUES ET PRODUITS OBTENUS PAR SA MISE EN OEUVRE La présente invention concerne un procédé de coloration de la surface de matériaux métalliques par formation d'une pellicule d'oxydes et les produits ainsi obtenus. Le matériau à colorer est soumis à un traitement superficiel par plasma à basse température dans une atmosphère comprenant au moins un gaz dont la molécule contient des atomes d'oxygène. L'invention s'applique principalement à la coloration des plaques et des tôles, notamment en acier inoxydable.
Patent CA-2015578-A1 (CA)
Title: Substituted biphenylcarboxylic acids, a process for their preparation and novel intermediates
Inventor: LERCH ULRICH
IPC: C07C63/72
Filed: 1990-04-27
Abstract: Abstract of the disclosure Substituted biphenylcarboxylic acids, a process for their preparation and novel intermediates Novel biphenylcarboxylic acids of the formula I               I in which R1 has the meansings indicated, and a process for their preparation are described.
Patent CA-2016527-A1 (CA)
Inventor: SHAW WILLIAM C
IPC: G03B35/08
Filed: 1990-05-10
Abstract: A camera for producing 3-D motion pictures has "left eye" and "right eye" camera lenses and two corresponding film transport mechanisms. Images to be recorded on films transported by the mechanisms are reflected by semi-transparent mirrors and the mechanisms are arranged so that the mirrors turn the images transversely of the films.      Contact prints made from the films can then simply be turned face-for-face to correct for the image reversals due to the presence of the mirrors. The contact prints are then correctly oriented for projection.
Patent CA-2017756-A1 (CA)
Title: Collection tray for an animal feeder
Inventor: WALDNER JOSEPH A
IPC: A01K5/01
Filed: 1990-05-29
Abstract: COLLECTION TRAY FOR AN ANIMAL FEEDER          ABSTRACT OF THE DISCLOSURE         The feeding of pigs or other animals is improved by the  provision  of  a  tray  member  which  sits  underneath  the conventional feeder trough and extends out in the front edge of the trough so the the material dropped by the animal over the front edge in the feeding action tends to collect on the tray rather  than be wasted.   The  tray has  upstanding  ribs which define  compartments  in the area on which the feed  falls to maintain the feed in place and to allow feeding of specialized materials.
Patent CA-2021359-A1 (CA)
IPC: G11B5/48
Filed: 1990-07-17
Abstract: Abstract In a magnetic disk memory drive,  inertia  in the magnetic head positioning system  (3b,3d,5)  is reduced by providing  a  light  weight,  integrated,    magnetic  head suspension assembly (3b,3d) fabricated of weldable thin sheet material and shaped to provide the required magnetic head (3a) flexibility,  mobility and spring loading,  while affording structural rigidity and dimensional stability in the disk memory  drive  environment.    Unwanted  magnetic  head  (3a) displacements  are  additionally  minimized  by  employing materials in the magnetic head suspension assembly, including the actuator (5), the arm (3d) and the load beam (3b), having the same, or nearly the same, thermal expansion coefficients.
Patent CA-2021460-A1 (CA)
Title: Gear drive unit with modifications
Inventor: EDWARDS DOUGLAS F
IPC: F16H3/083
Filed: 1990-07-18
Abstract: A transaxle or gear drive unit with ar improved shift mechanism and gear drive is set forth. The shift mechanism is of the shift key type and certain gears have recesses to receive a lug of the shift key with the recesses having ramps which depress the lug when the key is shifted. One of the gears has a smooth bore adjacent the recesses to serve as a neutral position for the shift key. A wide gear having teeth or splines around its periphery extending the length thereof is rotatably mounted on one shaft of the gear drive unit. The wide gear has a plurality of additional gears affixed thereto fox simultaneous rotation. The wide gear extends beyond the additional gears and connects with a forward speed gear and a reverse gear on another shaft. The wide gear thus functions as a mechanical connection for the additional gears as well as serving as a gear itself.
Patent CA-2022552-A1 (CA)
Title: Antiparkinsonian compositions
Inventor: TETRUD JAMES W
IPC: A61K31/135
Filed: 1990-08-02
Abstract: ABSTRACT            A pharmaceutical composition, the function of which is to slow the rate of progression of Parkinson's disease, is described.  The composition comprises selegiline, the chemical name of which is (-)-N,.alpha.-dimethyl-N-2-propynylbenzene-ethanamine, or a pharmaceutically acceptable salt thereof.
Patent CA-2023624-A1 (CA)
Title: Fire extinguishing compositions and methods
Inventor: PENNARTZ EDMOND R J
IPC: A62D1/00
Filed: 1990-08-20
Abstract: Fire extinguishing compositions which contain sodium chloride, magnesium chloride, sodium sulfate, calcium chloride, magnesium sulfate and water. Optional constituents are calcium sulfate, potassium sulfate, magnesium bromide and potassium chloride.
Patent CA-2024101-A1 (CA)
Inventor: PURBRICK MALCOLM D
IPC: A61M1/36
Filed: 1990-01-04
Abstract: Copolymère hydrophile réticulable comprenant des unités monomères dérivées d'un ester d'un acide carboxylique non saturé d'éthylène dans lequel le groupe ester contient un groupe hydroxyle labile primaire et des unités monomères dérivées d'un ester halohydroxyalkyle d'un acide carboxylique non saturé d'éthylène. Le copolymère trouve son utilisation dans des systèmes de séparation d'affinité.
Patent CA-2024651-A1 (CA)
Title: High-absorbable transvaginal preparation containing biologically active polypeptide
Inventor: FUJII TAKERU
IPC: A61K47/26
Filed: 1990-09-05
Abstract: The present invention is directed to a high-absorbable transvaginal preparation having excellent active ingredient absorbability, which comprises a biologically active polypeptide and an absorption promoter comprising a polyoxyethylenealkylphenyl ether and one or more compounds selected from the group consisting of an N-acylamino acid, cholic acids, pectic acid, taurine, saccharin, glycyrrhizic acid, aspartame, or a salt thereof. The preparation of the present invention is suitable for use in administering biologically active polypeptides.
Patent CA-2026261-A1 (CA)
IPC: B60B7/04
Filed: 1990-09-26
Abstract: WHEEL TRIM RETENTION   Abstract of the Disclosure A wheel cover retention system includes a series of plastic caps carried by the wheel cover.  The caps have integral flanges engageable with flanges of the cover to hold the cover against the vehicle wheel when the caps are threaded on exteriorly threaded lug nuts of the wheel.  The caps have integral legs which extend therefore through the cover with these legs having barbed ends to prevent separation of the caps from the cover.  Interlocking ribs on the cap flanges and cover flanges resist relative rotation between such flanges when they are engaged to resist unthreading of the plastic caps from the lug nuts when the wheel cover is mounted to the the wheel.
Patent CA-2027543-A1 (CA)
Title: End nesting stackable container modified to maintain material firmly in place
Inventor: MASSEY EDWARD W
IPC: B65D21/06
Filed: 1990-02-12
Abstract: An end nesting stackable container (10) is modified with means (20, 30, 40, 50) to firmly contain material being shipped or stored inside the container. The means contact the load being shipped at at least 4 points and are advantageously pivoted out of the way of the container during nesting. The preferred embodiment is directed at the shipping and storing of automotive windshields.
Patent CA-2027556-A1 (CA)
Title: Laser light emitter
Inventor: DAIKUZONO NORIO
IPC: G02B6/02
Filed: 1990-02-14
Abstract: Laser Light Emitter Abstract of the Disclosure A laser light emitter, which is brought into contact with living tissues to permit incision and the like of the living tissues in the medical treatment. This emitter comprises an optical fiber, which extends in a longitudinal direction and, at its fore end portion, whose core is not surrounded by a clad but exposed to be a laser light emitting portion and is bending at least partially at a certain angle on a longitudinal cross section of its extending direction and a holder, which supports the optical fiber.
Patent CA-2030425-A1 (CA)
Title: Electrostatic spray gun
Inventor: SICKLES JAMES E
IPC: B05B5/025
Filed: 1990-11-21
Abstract: ABSTRACT     An adapter for converting spray guns to electrostatic or induction charging includes a housing mountable on a spray gun.  A high voltage power source is contained in the housing and is connected to an electrode assembly mounted on the front of the housing.  The electrode assembly includes four electrodes which extend in front of the spray gun nozzle and air cap and are spaced symmetrically around the spray axis.  The nozzle is electrically grounded, while the electrodes carry a voltage in the range of 3-15 kV, to produce in the spray path from the nozzle an electrostatic field which produces electrical charges on the sprayed particles.  When conductive liquids are sprayed, the particles are charged by induction at relatively low electrostatic field gradients, while nonconductive liquids require high electrostatic field gradients which produce corona effects.  These corona effects are enhanced by the provision of a corona needle mounted on the nozzle at the spray axis.
Patent CA-2030693-A1 (CA)
Inventor: KING LLOYD H JR
IPC: H01R13/52
Filed: 1990-11-27
Abstract: ABSTRACT OF THE DISCLOSURE A waterproof and fire retardant connector having a rotatable wire connector with an end cap attached thereto with the wire connector filled with a sealant to permit the user to simultaneously compress the junctions ends of electrical wires into low resistance electrical contact while forming a waterproof covering and spark inhibiting compound surrounding the twisted junction end of the wires. The process includes inserting the junction ends of electrical leads into a wire connector, which is filled with a waterproof and fire retardant sealant, and then either crimping or rotating the wire connector to simultaneously form an electrical connection and waterproof and spark inhibiting seal around the twisted junction ends of the wires.
Patent CA-2033424-A1 (CA)
Title: Pair of hooks for a tire reinforcement production machine, and apparatus using said hooks
Inventor: DAILLIEZ OLIVIER
IPC: B60C9/02
Filed: 1990-12-28
Abstract: The apparatus comprising pairs of hooks in which one 32 of the hooks is articulated to the other hook 31. It is designed in such a way as to permit fastening onto the two hooks, in ensuring the engagement of one, and only one, cord on each of the second hooks 32 and in optimising the position of the hooks both for the fastening phase and for the unfastening phase. 
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Patent CA-2034706-A1 (CA)
Title: Process for the fabrication of a spirally wound membrane module
Inventor: LAST THIJME
IPC: B01D63/00
Filed: 1991-01-22
Abstract: A B S T R A C T       PROCESS FOR THE FABRICATION OF A SPIRALLY WOUND                 MEMBRANE MODULE       A method of manufacturing a spirally wound membrane module. A conventional method consists of wrapping the membrane envelope (with the feed and permeate spacers) around a permeate tube. The sealing of the envelope is achieved by applying a suitable adhesive on the formeate tube and around the edges of the membrane envelope before being rolled to form a spirally wound module. The present method avoids the application of the adhesive before rolling the module. In fact, the module manufacture is the same except that no adhesive is applied and the module is rolled as before. The sealing of the module is achieved by "potting" the two ends of the rolled module. The feed spacer is kept free of adhesive by protecting the spacer by the use of a masking tape which is machined out once the potting agent is dry.
Patent CA-2034801-A1 (CA)
Title: Optical fiber switch
Inventor: BLOMGREN JACK P
IPC: G02B26/08
Filed: 1991-01-23
Abstract: Abstract of the Disclosure An optical fiber switch has a substrate with a straight groove into which the free ends of two optical fibers are pushed into abutting relation to permit signals incoming on one of the fibers to be transmitted to the other.  Preferably, the switch is a 2 X 2 fiber array.  In one 2 X 2 switch, a substrate has two mutually perpendicular surfaces, each formed with a pair of grooves, and all four optical fibers are simultaneously pushed into one set of grooves to connect the fibers in one way, or pushed into the other set of grooves to switch the alignment.  In a different 2 X 2 switch, a substrate has a central, longitudinal passageway that is square in cross section, and the grooves are provided by the four corners of the passageway.
Patent CA-2035102-A1 (CA)
Inventor: TOWNSLEY MALCOLM
IPC: G02C7/04
Filed: 1991-01-28
Abstract: A contact lens for correcting astigmatism. The front surface has a central optical zone and an outer carrier having two points of maximum thickness located at an oblique angle of about 110° to 130° as measured from the vertical axis of the lens. The anterior surface of the lens is symmetrical about its vertical axis. The carrier tapers from the points of maximum thickness to thin portions at the top and bottom of the lens.             The rear surface of the lens has an outer spherical base curve zone, an inner toric zone, and an intermediate transition zone having thickness that gradually increase from the base curve zone to the toric zone. By making the radius of the base curve zone substantially equal to that of the toric zone's major meridian, a thinner, more comfortable lens is obtained.
Patent CA-2035259-A1 (CA)
Inventor: SARPESHKAR ASHOK M
IPC: C08G18/10
Filed: 1991-01-30
Abstract: Mo3341 IMPACT ABSORBING MEDIA               ABSTRACT OF THE DISCLOSURE    The present invention is directed to a solid polyurethane composition having a glass transition temperature of from -20°C to 0°C, having a Bayshore rebound of less than 20, and having a Shore A hardness of less than 80.     Mo3341
Patent CA-2036335-A1 (CA)
Title: Silver halide emulsion
Inventor: HIOKI TAKANORI
IPC: C09B23/02
Filed: 1991-02-14
Abstract: ABSTRACT OF THE DISCLOSURE       A silver halide emulsion containing at least one member  of  methine  dyes  represented  by  the  following general formula (I):                               (I) wherein MET represents an atomic group having a methine dye  structure;  Q  represents  a  bivalent  bonding  group comprising at least one atom of carbon atom,  nitrogen atom,  sulfur atom and oxygen atom or an atomic group having at least one atom of carbon atom, nitrogen atom, sulfur  atom and oxygen atom;   Ar  represents  a  group which  has  an  aromatic  character  and  derives  from  a polycyclic  compound  composed  of  8  or  more  atoms excluding nitrogen atom;   ?l represents  1 or  2;   ?2 represents 0 or 1;  and ?3 represents 1, 2, 3 or 4.
Patent CA-2037381-A1 (CA)
Inventor: MEREDITH PETER T
IPC: F25C1/00
Filed: 1991-03-01
Abstract: (ss.2I,3I,34 and I42) ABSTRACT          "The "PURIFIED ICE-WATER DISPENSER" attaches to the kitchen sink taps. The tap water is directed to a valve at the base of a newly designed spout which ajusts to allow the water flow to either run through a water filter (which is not part of this invention) or through the spout directly into the sink.             When the water is directed through the water filter it fills a pre-cooled water reservoir where it remains until the opening of a second spout located at the lowest point of the reservoir.             The reservoir is cooled electrictly with a thermostat."
Patent CA-2038106-A1 (CA)
Title: Polymeric oil adsorbents
Inventor: FABIAN KLAUS H
IPC: B01D15/00
Filed: 1991-03-12
Abstract: Abstract of the disclosure:            Polymeric oil adsorbents Solid adsorbents for soaking up or binding adsorbates from the group comprising mineral  oils, ester oils, liquid  hydrocarbons  and  other  liquid  inert  organic compounds or mixtures thereof which comprise, as adsorp-tive components, a finely disperse to granular polyvinyl acetal insoluble in water and in the adsorbates, prefera-bly polyvinyl butyral.            Use  of  the  adsorbents  for soaking up or  adsorptive binding and, as appropriate, for subsequent disposal or reprocessing of products, which may acutely pollute the environment,  from the group comprising crude oil, tar oil, lubricating oil, lubricating grease, mineral oil, petroleum,  hydraulic oil,  paraffin oil,  spindle oil, light and heavy fuel oil, diesel oil, kerosene, gasoline, benzene,  liquid organic pesticides or pesticide solu-tions, vegetable oils and fats, animal oils and fats and, if appropriate, aqueous emulsions or suspensions of the said products.
Patent CA-2039656-A1 (CA)
Inventor: HOCHSTRASSER FERDINAND
IPC: F16K11/044
Filed: 1991-04-03
Abstract: Water supplied from a mixing faucet or combination set via an inflow chamber to a change-over valve effects by impact pressure that a double-sided valve member-as a result of an asymmetrical arrangement between a first valve seat and a second valve seat-moves to the first valve seat, thereby blocking the supply to a shower outlet. Therefore, the water is conducted via the second valve seat into a bath-tub outlet. By actuating a draw-button, the double-sided valve member is reversed in order to block the bath-tub outlet and release the shower outlet. Impact pressure now effects self-locking in this position. When the water is turned off and impact pressure no longer prevails, the two-sided valve member thereupon moves into an inoperative positon by the force of two mutually counteracting springs. The conduit leading to the shower is automatically emptied by means of an annular gap remaining between the first valve seat and the double-sided valve member. It is thus precluded that bacteria can multiply or be reproduced in standing water.