baber/WOPTO huggingface dataset:
Patent CA-2091686-C (CA)
Title: Crystalline modification of 2-dimethylaminoethyl-n-butylaminobenzoate hydrochloride, method for production thereof and pharmaceutical preparation for anesthesia of eyes, based thereon
Inventor: LEONIDOV NIKOLAI BORISOVICH
IPC: C07C227/42
Filed: 1991-08-19
Granted: 1997-09-30
Abstract: A novel crystalline modification of 2-dimethylamino-ethyl-n-butylaminobenzoate hydrochloride is characterized by a single endothermal  effect of melting at 148.6~0.3°C and the following values of interplanar spacings d and relative intensities of reflections I:   d, .ANG.        I    d, .ANG.  I 26.I40      3   2.824           4 I2.755      I00 2.798           2 8.538    27  2.762           I 6.380       6   2.744           2 6.II7       2   2.678           2 5.644       6   2.63I           I 5.49I       I2  2.570           I 5.096       56  2.534           I 4.874       I7  2.5I4           I 4.486  I0  2.454           I 4.244       I5  2.4I9           I 4.4I8       7   2.346          I 4.I37       I   2.308           I 4.00I       5   2.256           I 3.949       3   2.232           I 3.828       5   2.I66           I 3.585       3   2.008           I 3.5I5       7   I.953           2 3.427       3   I.69I        I 3.34I       3   I.584           I 3.3I0       3 3.I70       3 3.I56    4 3.I49       4 d , .ANG.     I      d, .ANG.       I 3.064   I 2.979   2 2.944   I 2.903   I     A method for production of said compound residing in that a solution of 2-dimethylaminoethyl-n-butylaminobenzoate hydrochloride  of  polymorphic  form  in  water  or  organic solvent, or in their mixture, is cooled by a cooling agent at a rate of no less than 8°C/min till complete crystallization of   the   solution  with   subsequent  drying  of  obtained crystals.      Compound of the invention has a local anaesthetic activity and is an active principle of a pharmaceutical preparation for anaesthesia of eyes (content of active principle is from 0.05 to 0.5% by mass).
Patent CA-2093825-C (CA)
Title: Proanthocyanidin polymers having antiviral activity and methods of obtaining same
Inventor: TEMPESTA MICHAEL S
IPC: A61K31/765
Filed: 1991-10-10
Granted: 2003-01-07
Abstract: The present invention provides for proanthocyanidin polymers with significant antiviral activity. The proanthocyanidin po-lymers can be chemically synthesized or can be isolated from a Croton or a Calophyllum plant species. The present invention en-compasses methods of using proanthocyanidin polymers in treating warm-blooded animals, including humans, infected with par-amyxovaridae such as respiratory syncytial virus, orthomyxovaridae such as influenza A, B and C, and herpes viruses such as Herpes Simplex virus.
Patent CA-2098805-C (CA)
Inventor: COOK VINCENT C
IPC: C08G18/80
Filed: 1993-06-18
Granted: 1999-09-28
Abstract: A coating composition is described for producing a clear or colorless coating. The composition comprises: (a) a polymer comprising at least one functional group that is reactive with isocyanate, (b) a blocked polyisocyanate, (c) a hydrazide group, either attached to the polymer (a), to the polyisocyanate (b), or part of a compound different from (a) or (b), wherein at least one of the nitrogens of the hydrazide group is not adjacent to a carbonyl.
Patent CA-2103953-C (CA)
Title: Universal adaptor for deadbolt
Inventor: SOLOVIEFF PAUL G
IPC: E05B9/08
Filed: 1993-08-12
Granted: 1999-04-13
Abstract: An adaptor 16 is formed with a pair of cylinders 22 and 24 which are in axial alignment, of different diameters and  extend  from  opposite  sides thereof.    One  of the cylinders 22 and 24 fits in complementary fashion into one of a pair holes 14 and 12, respectively, to preclude any movement in a radially lateral direction of adaptor 16 relative to the axis of the hole.   The other one of cylinders 22 and 24 fits, respectively, into a groove 44 formed in a  face 42  of a guard collar 18  or into  a cylindrical opening 36 of the collar.  The cylinders 22 and 24 are joined by integral lines 26, 28 and 30 so that the precluding of radially lateral movement of the cylinder 22 or 24 within its hole 14 or 12, respectively, prevents radial movement of collar 18 relative to the axis of the hole.
Patent CA-2106018-C (CA)
Title: Procede pour la confection d'enrobes bitumineux denses a froid stockables et de graves-emulsions
Inventor: CHENEVIERE PASCAL
IPC: E01C19/10
Filed: 1993-09-13
Granted: 2000-07-18
Abstract: L'invention concerne un procédé pour la confection d'enrobés bitumineux denses à froid stockables et de graves-émulsions. On réalise des enrobés denses stockables et des graves-émulsions par enrobage avec une émulsion mixte de bitume dur et de bitume mou. De façon inattendue, ces enrobés ont une stockabilité qui les rapproche des enrobés exécutés avec un bitume mou, mais prennent la cohésion qui correspond é la viscosité du bitume constitué par le mélange homogène des bitumes. L'émulsion mixte, de préférence cationique, est réalisée très simplement par exemple par mélange d'une émulsion de bitume dur et d'une émulsion de bitume mou.
Patent CA-2106675-C (CA)
Title: Enzymatic process for the preparation of macrolactone
Inventor: BLANCHE FRANCIS
IPC: C12P21/04
Filed: 1992-03-26
Granted: 2002-10-15
Abstract: The invention relates to a process for the enzymatic preparation of a polyunsaturated macrolactone of the group A streptogramins by means of a microorganism or an acellular preparation derived from this microorganism, capable of oxidising the 2-3 bond of the D-proline of macrolactones to dehydroproline.
Patent CA-2112875-C (CA)
Inventor: DAUGHERTY RICHARD DEWAYNE
IPC: G01N33/20
Filed: 1994-01-05
Granted: 2003-09-09
Abstract: The present invention is a method for analyzing silicon for nonmetallic contaminants. The method comprises: (A) forming an alloy comprising silicon and a metal which promotes separation of nonmetallic contaminants present in the alloy, (B) separating the nonmetallic contaminants from the alloy, and (C) analyzing the separated nonmetallic contaminants for chemical content. The present invention is particularly useful for analyzing metallurgical grade silicon intended for use in the direct process for the production of organohalosilanes for the presence of oxides and carbides of calcium, aluminum and silicon.
Patent CA-2114337-C (CA)
Inventor: HARTMANN ACHIM
IPC: B01D53/52
Filed: 1994-01-27
Granted: 2002-05-14
Abstract: To improve the separation of dispersedly precipitated sulfur from a washing solution used in the oxidative washing of hydrogen sulfide containing waste gases, the suspension is heated before filtration to about 45° C to 70° C. Such heating causes the sulfur contained in the solution to coagulate into large flocks and form a mass of high purity sulfur which is largely non-thixotropic. This mass, often called a filter cake, can be washed and utilized in a large number of ways as a source of sulfur.
Patent CA-2114866-C (CA)
Inventor: BLANYER RICHARD J
IPC: H01M10/16
Filed: 1994-02-03
Granted: 2000-05-09
Abstract: This invention relates to method and apparatus for compressing an assembly of plates inside a valve regulated lead-acid battery thereby allowing the battery case to expand without causing slippage or partial loss of contact between the battery plates.
Patent CA-2115170-C (CA)
Title: Imidazolyl-alkenoic acids
Inventor: KEENAN RICHARD MCCULLOCH
IPC: C07D405/06
Filed: 1992-08-12
Granted: 2004-05-25
Abstract: Angiotensin II receptor antagonists that are imidazolyl-alkenoic acids are useful in regulating hypertension and in the treatment of congestive heart failure, renal failure, and glaucoma, pharmaceutical compositions including these antagonists, and methods of using these compounds to produce angiotensin II receptor antagonism in mammals. Antagonists of the present invention have the formula:
Patent CA-2132787-C (CA)
Title: Combination well logging device
Inventor: SEEMAN BRONISLAW
IPC: G01V11/00
Filed: 1994-09-23
Granted: 2004-07-06
Abstract: The invention concerns a combination well logging device adapted to be moved inside a borehole to measure the properties of geological formations through which the borehole passes.      The device according to the invention comprises a series of elongate logging sections mounted end to end, including a first section adapted to be maintained with a generatrix applied against the wall of the borehole, a second section comprising a body and a measurement pad adapted to be spaced radially from the body for application against said wall, a third section adapted to be kept space from said wall, and first and second hinges connecting the second section to the first and third sections respectively in order to allow respective angles of inclination between the second section and the first and third sections.
Patent CA-2133015-C (CA)
Title: Linear motor
Inventor: SATOMI HIROBUMI
IPC: H02K41/02
Filed: 1994-09-27
Granted: 1997-09-23
Abstract: A linear motor is operated as an m-phase linear pulse motor or a brushless DC linear motor capable of producing large driving force.  The linear motor includes an even number N of salient poles 11, 12, ... disposed at an equal pitch angle and includes a stator 1 having a plurality of permanent magnet poles disposed on inner peripheral surfaces of the salient poles to have polarities different from each other in the shaft direction and a mover 3 disposed movably in the shaft direction.  The salient poles are constituted by pairs of the salient poles adjacent to each other and include m sets of salient pole groups each composed of (N/m) salient poles disposed at an angle of (720m/N) degrees and windings W1, W2, ... wound on (N/m) 1 or (N/m)-2 salient poles belonging to the salient pole groups are connected to have opposite polarities between the pair of salient poles and are connected to have the same polarity between the salient poles which do not constitute the pair of salient poles and are disposed to interpose the salient poles for the other phase to constitute phase windings for m phases.  Remaining salient poles of the salient pole group are caused to detect a position and a movement direction of the mover 3 as sensor poles SA and SB.
Patent CA-2141283-C (CA)
Title: Crash stop shock ring for the protection of bearings
Inventor: AOYAGI AKIHIKO
IPC: G11B33/12
Filed: 1995-01-27
Granted: 1999-09-28
Abstract: A technique for preventing damage to ball bearings in small form factor drive motor where the device has at least one crash stop ring disposed about the shaft and inside the rotor of the motor. The ring is dimensioned to permit only a small amount of movement of the rotor relative to the shaft. The crash stop permitted movement must be less than the minimum movement which would cause damage to the elements of the ball bearing.
Patent CA-2141614-C (CA)
Title: Methodes et appareil de preamplification pour microphone
Inventor: HEYL LAWRENCE FREDERICK
IPC: H03F3/183
Filed: 1994-06-02
Granted: 1998-12-22
Abstract: Circuit de préamplification amplifiant des signaux sonores destinés à un système informatique. Un premier étage d'amplificateur à émetteur commun (16) assure une amplification à gain élevé du signal d'entrée, tandis qu'un deuxième étage d'amplificateur (18), comprenant un amplificateur opérationnel, permet d'appliquer à un câble le signal sonore amplifié. Une source de tension constante économique (14) comprenant une diode (26) et un amplificateur opérationnel (21a) transmet une référence de tension aux deux étages d'amplificateur (16, 18) avec élimination poussée du bruit de système. Le circuit et les méthodes associées permettent de créer un préamplificateur économique, facile à fabriquer, adapté pour l'entrée de signaux sonores dans des ordinateurs de bureau.
Patent CA-2147164-C (CA)
Title: Method and apparatus including system architecture for multimedia communications
Inventor: SHAW VENSON M
IPC: H04N19/61
Filed: 1992-10-16
Granted: 2005-12-20
Abstract: A controller apparatus and method for executing a plurality of control functions for communication of multimedia articles including voice, audio, text, still image, motion video and animated graphics which incorporates a frame memory system which is compatible with multiple standard or customized coding algorithmic signals such as H.261, MPEG, JPEG, EDTV or HDTV or in multiple incompatible video coding equipment employing different video coding algorithms can now freely communicate with each other, the controller apparatus further including a band width management function for automatically scaling the multime-dia article signal to conform to available bandwidth.
Patent CA-2147175-C (CA)
Inventor: WATTS HUGO PAUL
IPC: A47K10/42
Filed: 1993-10-08
Granted: 2003-06-03
Abstract: A dispenser for paper wipes and the like comprising a first container which is adapted to hold a stack of wipes, the first container having an aperture in one face providing an opening through which wipes may be dispensed, and a second container for receiving used or soiled wipes, the second container having an aperture in one face providing an opening through which wipes may be passed, a portion of each of the first and of the second containers being movable between a closed position and a released position in which the first container may be filled or emptied or in which the second container may be emptied, wherein complementary connection means are provided on the first and second containers, said connection means being adapted to releasably join together the two containers and each container is adapted to contain and retain wipes, when separated from the other container.
Patent CA-2149604-C (CA)
Inventor: IYENGAR VASU
IPC: H04B3/06
Filed: 1995-05-17
Granted: 1998-04-07
Abstract: In methods and apparatus for estimating the frequency response of telecommunications channels, signals carried on the channels are divided into pluralities of signal segments of limited duration, unvoiced signal segments are identified, and spectral components of the unvoiced signal segments are measured.  The measured spectral components may be integrated over time to derive time-averaged measurements of the spectral components.  The time-averaged measurements may be compared to corresponding components of expected unvoiced signal spectra to improve the accuracy of the frequency response estimates.  Filters may be inserted in the channels to adjust the frequency responses, the filters having filter characteristics selected in response to the measured spectral components. The methods and apparatus can be used to compensate for poor bass frequency response in voice channels.
Patent CA-2153467-C (CA)
Title: Direction changing mechanism for transferring articles between transverse conveyors
Inventor: ENSCH PETER J
IPC: B65G17/38
Filed: 1995-07-07
Granted: 2006-01-10
Abstract: The invention provides a conveying apparatus including an upstream conveyor, a downstream conveyor oriented perpendicularly to the upstream conveyor to form a butt turn, and a mechanism for transferring conveyed articles from the upstream conveyor to the downstream conveyor. The transfer mechanism includes guide rails that provide a corner to change the direction of travel of the conveyed articles and a transfer assist conveyor for supporting the articles as they travel between the upstream and downstream conveyors. The transfer assist conveyor runs alongside the upstream conveyor and has a cantilevered section that extends over the sprocket location of the downstream conveyor to perform the function of a prior art static transfer plate.
Patent CA-2153555-C (CA)
Inventor: SCHNEIDER JOHN C
IPC: B03D1/16
Filed: 1995-07-10
Granted: 1999-06-22
Abstract: A flotation apparatus has an array of flotation cells which are in serial fluid flow communication from a first to a last cell.  Each cell is in overflow communication with an overflow froth receiving receptacle which preferably has a top lip of slightly varying height in each cell.  Air inlet means and mechanical agitation means are provided for each cell and are so positioned to promote an upright circular fluid flow in each cell toward the froth receiving receptacle.  Each cell has internal surfaces shaped and oriented to promote the upright circular fluid flow and to discourage the creation of reverse eddy currents within the cell.
Patent CA-2156549-C (CA)
Title: Snap together protective goggle construction with toric lens
Inventor: CANAVAN RICHARD W
IPC: A44B11/04
Filed: 1995-08-21
Granted: 1999-11-30
Abstract: A protective goggle construction consists of a goggle body and a toric lens which is snap received over the front of the goggle body. The goggle body includes a rigid frame portion, and a resilient face engaging portion. The frame portion includes rigid top, bottom and side walls which cooperate to define a goggle interior. The lens includes an optical toric front wall, and further includes top, bottom and side walls extending rearwardly from a peripheral edge of the front wall thereof. The top wall of the lens includes an upstanding ridge formed along the entire length thereof. The face engaging portion includes convex bulges in the temple engaging areas thereof. The rearwardly extending walls of the lens are slidably received over the frame walls to form the assembled goggle construction. Interengaging detent and clip structures are provided on the side walls of the frame and lens to releasably secure the lens and frame in assembled relation. Rearwardly extending ridges on the top and bottom walls of the frame portion cooperate with lens walls to define ventilation passages for providing an air flow over the inner surface of the front lens wall. A detent and slot arrangement is provided in the nose receiving area for maintaining the frame portion and lens in proper registry. Adjustable strap receiving members are provided on the side walls of the frame portion for adjustably receiving and securing a strap.
Patent CA-2162361-C (CA)
Title: Antisense oligonucleotides which combat aberrant splicing and methods of using the same
Inventor: KOLE RYSZARD
IPC: C12P21/02
Filed: 1994-05-10
Granted: 2008-10-21
Abstract: A method of combatting aberrant splicing in a pre-mRNA molecule containing a mutation is disclosed.  When present in the pre-mRNA, the mutation causes the pre-mRNA to splice incorrectly and produce an aberrant mRNA or mRNA fragment different from the mRNA  ordinarily encoded by the pre-mRNA. The method comprises hybridizing an antisense oligonucleotide to the pre-mRNA molecule to create a duplex molecule under conditions which permit splicing. The antisense oligonucleotide is one which does not activate RNase H, and is selected to block a member of the aberrant set of splice elements created by the mutation so that the native intron is removed by splicing and the first mRNA  molecule encoding a native protein is produced.  Oligonucleotides useful for carrying out the method are also disclosed.
Patent CA-2165071-C (CA)
Title: Ocular insert with anchoring protrusions
Inventor: DAROUGAR SOHRAB
IPC: A61K9/00
Filed: 1994-06-20
Granted: 2000-08-15
Abstract: A flexible ocular insert device adapted for the controlled sustained release of an ophthalmic drug into the eye. In one embodiment, the device includes an elongated body of a polymeric material in the form of a rod or tube containing a pharmaceutically active ingredient and with at least two anchoring protrusions extending radially outwardly from the body. The device has a length of at least 8 mm and the diameter of its body portion including the protrusions does not exceed 1.9 mm. As shown in Figure 7, the device (70) with ribbed configuration has circular cylindrical walls (72) with domed end portions (74). A series of arcuate shaped ribs (76), of circular, toroidal cross section, are provided at intervals along the length of the device (70).
Patent CA-2169005-C (CA)
Title: Method and apparatus for exchanging administrative information between local area networks
Inventor: DESAI BHUPESH JAYANT
IPC: H04Q7/34
Filed: 1996-02-07
Granted: 2000-05-16
Abstract: The system of the invention has particular application to a wide area network (WAN) where call routing information often changes in one local area network (LAN) (e.g. a switching system) while other LANs (e.g. cellular communication systems) are unaware of the changes. Because of the heavy flow of traffic in such networks, the minimization of administrative traffic data is desirable. The invention solves the need for constant updating and auditing of the LANs in the WAN. One LAN is considered the master LAN for a given parameter and contains an accurate directory of administrative data for that parameter. Each of the other LANs operate on the assumption that the administrative or directory information it contains is correct. If this assumption is wrong for a particular parameter and a LAN contains incorrect information, in response to a communication to or from the LAN, the system: 1) recognizes that the information relating to the parameter is incorrect; 2) determines the correct information and completes the communication based uponthe correct information; and 3) updates the LAN with the correct information from the master LAN such that the next time the same communication is attempted the LAN has the correct information. In this manner, the LANs are updated on a need to know basis only after an actual communication is attempted thereby eliminating the constant transmission of administrative information between the LANs that exists in the prior art systems.
Patent CA-2175654-C (CA)
Title: Concentric annular ring lens designs for astigmatic presbyopes
Inventor: MENEZES EDGAR V
IPC: G02C7/04
Filed: 1996-05-02
Granted: 2007-03-20
Abstract: Concentric lens designs are disclosed for astigmatic presbyopes which comprise at least one surface which has a circular central portion and a plurality of concentric annular rings with at least three separate optical powers corresponding to a prescription for a patient and corresponding to 1) a basic distance spherical prescription Rx, 2) a near add spherical prescription Rx, and 3) a spherical prescription corresponding to the full, or preferably a fraction of the, cylindrical prescription Rx. An astigmatic presbyopic prescription contains an astigmatic correction, normally in the nature of a cylindrical prescription which specifies both the cylindrical optical power and the orientation of the cylindrical axis. The cylindrical prescription is taken into account in the design of the lens, hut got with a cylindrical optical surface. Instead, the present invention recognizes that the brain can effectively discriminate between separate competing images by accepting an in-focus image and rejecting an out-of-focus image. Accordingly, a portion of the lens is provided with a spherical surface corresponding to the cylindrical prescription, or more preferably a fraction of the full cylindrical prescription, and the brain is relied upon to discriminate and accept an in-focus image to compensate for the patient's astigmatism.
Patent CA-2181715-C (CA)
Title: Liquid ophthalmic sustained release delivery system
Inventor: YEN SHAU-FONG
IPC: A61K9/00
Filed: 1995-02-09
Granted: 2006-05-30
Abstract: Disclosed is a sustained release liquid aqueous ophthalmic delivery system a nd a method of providing a slow and sustained release of ophthalmic treating agents to the eye of a mammal which comprises administering to the eye of a said mammal an effective amount of a homogeneous liquid aqueous ophthalmic pharmaceutical composition, of pH between about 3.0 and about 6.2, which is administrable in drop form and which comprises an ophthalmically effective concentration of a said ophthalmic treating agent and about 0.05 % to about 10 % by weight of the polymer chitosan; said polymer consisting essentially of (A) monomeric .beta.(14)-D-glucosamine linked units and of (B) monomeric .beta.(14)-N-acetyl-D-glucosamine linked units which are scattered randomly in the molecule of the polymer, the numerical proportions of A and B being from about 60 to about 99 % of A and about 1 to about 40 % of B, the viscosity rating being from about 3 to about 3000 cps; in which method, upon contact with the higher pH of the ocular fluid, said liquid formulation is converted to a stiff gel from which the ophthalmic treating agent is slowly released over a prolonged period of time.