baber/WOPTO huggingface dataset:
Patent CA-2018773-A1 (CA)
Inventor: STIRLING DAVID I
IPC: C07C209/00
Filed: 1990-06-12
Abstract: Amines in which the amino group is on a secondary carbon atom which is chirally substituted can be enantiomerically enriched by the action of an omega-amino acid transaminase which has the property of preferentially converting one of the two chiral forms to a ketone. The process also can be used to stereoselectively synthesize one chiral form from ketones substantially to the exclusion of the other.
Patent CA-2020079-A1 (CA)
Title: Motor stator heat spike
Inventor: OVERTON BERNARD P
IPC: H02K5/18
Filed: 1990-06-28
Abstract: ABSTRACT     An electric motor includes a heat spike within the stator slots which extends radially inward from the stator back iron into the slot between the stator teeth.  The heat spike, placed within the stator slots, reduces the heat path length and increases the heat transfer areas to the iron.  Together, these allow the winding heat to dissipate quicker, and thereby, reduce the hotspot temperature and improve the motor's load rating.
Patent CA-2021088-A1 (CA)
Title: Damper assembly for a strut in a jet propulsion engine
Inventor: MERCER GARY D
IPC: F02K3/06
Filed: 1990-07-12
Abstract: PATENT        JET PROPULSION ENGINE     ABSTRACT OF THE DISCLOSURE        The present invention is a damper assembly included in a strut on the front frame for a jet propulsion engine.  The damper assembly is disposed within the strut for damping vibration of the strut as a result of air stream pressure pulses from first stage fan blades causing strut excitation when the fan blades are operating at least at transonic speeds.
Patent CA-2021716-A1 (CA)
Inventor: SCHMALSTIEG LUTZ
IPC: C07C265/14
Filed: 1990-07-20
Abstract: Novel polyisocyanates or mixtures of polyisocyanates with ester groups, characterised by 
 
  a) a content of aliphatically bonded isocyanate groups of 18 to 33, preferably 20 to 33, % by weight, 
  b) an (average) NCO functionality of 4.1 to 10, preferably 5 to 8, and 
  c) a viscosity of 200 to 2500, preferably 500 to 1000, mPa.s at 22 DEG C, 
 a process for the preparation of the abovementioned preferred polyisocyanates or polyisocyanate mixtures by reacting aliphatic isocyanatocarboxylic acid chlorides with sugars, or sugar alcohols, which have 5 and/or 6 hydroxyl groups which are present in silylated form, and the use of the novel polyisocyanates or polyisocyanate mixtures as isocyanate component in two-component polyurethane varnishes.
Patent CA-2021765-A1 (CA)
Inventor: COGLIANO JOSEPH A
IPC: C09J7/22
Filed: 1990-07-23
Abstract: ABSTRACT OF THE DISCLOSURE      The present invention is directed to adhesive, waterproof membranes capable of adhering to freshly poured concrete compositions upon curing.  The waterproof membranes of this invention comprise a bituminous sheet having at least one major surface coated with a non-tacky polymeric coating composition which contains a water-insoluble polymer, and optionally a filler capable of absorbing or reflecting infrared or ultra violet radiation and/or a plasticizer.  Suitable water-insoluble polymers for use in this invention include alpha-beta-ethylenically unsaturated carboxylic acid polymers or polyvinyl alcohol polymers.
Patent CA-2025692-A1 (CA)
Title: Testing of viscoelastic materials
Inventor: BURHIN HENRI A G
IPC: G01N11/14
Filed: 1990-09-19
Abstract: In a method of testing a sample of viscoelastic material held under pressure between two opposing, temperature-controlled dies, the sample is subjected to an oscillatory, rotary shearing force which has a predetermined amplitude and a frequency within the range 0.001 to 2 Hz, and a torque which is indicative of the response of the sample to the shearing force is measured, at least one measurement of said torque being made when the said predetermined amplitude is at least +/-10 DEG  but not greater than +/-360 DEG . An apparatus for carrying out the method is also provided.
Patent CA-2026925-A1 (CA)
Title: Tetracyclic compounds having anti-allergic and anti-asthmatic activities, their preparation and use
Inventor: FUKUMI HIROSHI
IPC: C07D213/06
Filed: 1990-10-04
Abstract: ABSTRACT OF THE DISCLOSURE    Compounds of formula (I):                                      (I) [in which: Q is nitrogen or =CH-; R1 and R2 are hydrogen, alkyl, alkoxy, hydroxy, trifluoromethyl or halogen; and R3 is various specific substituted alkyl groups] and pharmaceutically acceptable salts thereof have valuable anti-allergic and anti-asthmatic activities.  They may be prepared by reacting a corresponding compound where R3 is replaced by a hydrogen atom with a compound to introduce the group R3.
Patent CA-2031864-A1 (CA)
Title: Multi-unit pulsatile delivery system
Inventor: MARUYAMA FREDERICK
IPC: A61K9/22
Filed: 1990-12-10
Abstract: MULTI-UNIT PULSATILE DELIVERY SYSTEM                       ABSTRACT OF THE DISCLOSURE The present invention is directed to an active agent dispenser for use in a fluid-containing environment, which dispenser comprises a rigid housing (20), a plurality of movable active agent units (26) (28)(30)(32) and (34), filling a portion of the housing, a fluid-activated driving member (38) for dispensing the active agent units filling the remainder of the housing, and an active agent unit outlet means (22).  The dispenser may optionally also include an initial active agent tablet (24), a density element (36), and/or an inert layer (40).  In the present invention, each active agent unit is comprised of an active agent dosage or filling contained within a fluid-impermeable cup-shaped member, the cup-shaped members being oriented within the housing with the base of the cup-shaped members facing the outlet means (22).
Patent CA-2037910-A1 (CA)
Title: Treatment of wool and woollen goods
Inventor: THOMPSON RONALD C
IPC: D06M13/48
Filed: 1990-08-03
Abstract: ABSTRACT    A process  for  enhancing  the  shrinkage  and  felting resistance of wool or woollen goods, includes subjecting the wool  or  woollen  goods  to  a  predominantly  oxidising pretreatment with a pretreatment agent which is a salt of preoxymonosulphuric acid, and applying to the fibres of the thus pretreated wool or woollen goods a fibre coating agent which is a polyether substituted with aziridine groups.
Patent CA-2038222-A1 (CA)
Inventor: SENDELWECK GENE KARL
IPC: H03K17/74
Filed: 1991-03-14
Abstract: A diode is connected at a first electrode thereof to a source of input signal to be switched via a capacitor and is connected at a second electrode thereof via an output circuit to an output terminal. A bias control circuit, coupled to the diode, provides a first operating mode in which the diode is forward biased for coupling the input signal to the output terminal via the output circuit and provides a second operating mode in which the first electrode of the diode is DC isolated so that the diode rectifies the AC component of the input signal and in so doing generates a reverse bias for self-biasing the diode to a non-conductive condition.
Patent CA-2038223-A1 (CA)
Inventor: SENDELWECK GENE K
IPC: H04N11/24
Filed: 1991-03-14
Abstract: A color television receiver includes a comb filter having luminance and chrominance outputs coupled to respective inputs of a display processor. A signal source provides composite and non-composite color video signals for display. A switching circuit having a first operating mode for coupling the composite video signal to an input of the comb filter for enabling display thereof by said display processor.      The switching circuit has a second operating mode for coupling the luminance component of the non-composite video signal to the input of the comb filter and for concurrently coupling the chrominance component of the non-composite video signal to the chrominance output of the comb filter for facilitating display of the non-composite video signal by said display processor.
Patent CA-2043177-A1 (CA)
Inventor: LUMELSKY LEON
IPC: G09G5/39
Filed: 1991-05-24
Abstract: Image conversion method and apparatus that provides for (a) storing in a first memory a first image field;  (b) storing in a second memory a second image field;    (c) reading  the  first  and  the second  memories;    (d) simultaneously displaying on a display screen the first and the second image fields as a single image frame; and (e)  while performing  the  step  of  reading  the  method includes a step of storing in a third memory a third image field. The first,  second and third memories are provided as a frame buffer having a 3x3 memory block organization.  For  image  fields  numbered 1, 2, 3, 4, 5...n.. the  system  of  the  invention  reads  the image fields two at a time in accordance with a predetermined sequence given by: 1 and 2, 2 and 3, 3 and 4, 4 and 5, ... (n - 1) and n, n and (n + 1). A high resolution frame length is selected to be longer than or shorter than a television field period. The phase difference between the two is measured and circuitry alters the predetermined read-out sequence to ensure that a field memory to be read will not also be required for simultaneously storing a next television field.
Patent CA-2044292-A1 (CA)
IPC: F24F3/044
Filed: 1991-06-11
Abstract: ENVIRONMENTAL CONTROL SYSTEM CONDENSING CYCLE                    ABSTRACT      In an air cycle environmental control system, a condenser (46) removes water vapor from compressed, ambient, supply air (9) before it is expanded in a first turbine (24).  The chilled outlet air (49) from the first turbine (24) is then used as coolant in the condenser (46), absorbing there the heat of vaporization of the condensed water vapor.  After passing through the condenser (46), the warmed coolant is then expanded in a second turbine (26). Should the pressure of the supply air fall below predetermined levels, portions of the cycle that degrade performance or become unnecessary are bypassed.
Patent CA-2046945-A1 (CA)
Title: Process to reduce propenyl polyethers in hydroxy-functional polyethers
Inventor: CHAVEZ JOHNNY JR
IPC: C08G65/32
Filed: 1991-07-12
Abstract: A process for reducing the amount of propenyl polyethers in hydroxy-functional polyethers comprising (1) contacting a neutral hydroxy-functional polyether, containing a propenyl polyether and water, and an acid catalyst soluble in the hydroxy-functional polyether under reaction conditions sufficient to convert at least a portion of the propenyl polyether to propionaldehyde; (2) contacting the product of step (1) and an epoxy compound to substantially scavenge the acid catalyst; and (3) stripping the product of step (2) to substantially remove the epoxy compound and the propionaldehyde. The resulting hydroxy-functional polyethers contain reduced amounts of propenyl polyethers and can therefore be used to prepare polyurethane foams having a reduced tendency to discoloration.
Patent CA-2047135-A1 (CA)
Title: Indicator Device
Inventor: KILLINGER ERICH
IPC: G09F9/30
Filed: 1991-07-16
Abstract: The invention relates to a display device for a display formed from individual display elements, where an optical fibre, in each case with an associated bore in a display panel located in front of the display elements, is allocated to each display element, with switching elements between the ends of the optical fibres and the associated bores of the display panel which are allocated in each case to the individual optical fibres and which can be moved as required by means of electromagnets to a no-display position covering the end of the allocated optical fibre, or to a display position uncovering the optical fibre. This display device can be exploited in simple fashion to provide any desired optical displays by terminating every optical fibre with a radiating body which projects into a casing compartment open towards the display panel and which is held in position in a hole in the floor of the compartment, by designing the switching element as a flap which is rotatably mounted with its axis of rotation in the vicinity of the open side of the compartment and which, in the no-display position, covers the open side of the compartment, by disposing the radiating body outside the axis of rotation of the flap so that it acts as a lateral stop limiting the rotational movement of the flap to around 90 DEG  and is pivoted in the display position roughly half-way into the compartment so that the end of the radiating body is uncovered and by fixing a light collector in the allocated bore of the display panel, which collector is designed as a section of a solid body of glass or of transparent plastic and in which at least the front surface facing the radiating body is polished. <IMAGE>
Patent CA-2047880-A1 (CA)
Title: Benzimidazole derivatives, their preparation and pharmacological applications
Inventor: CUBERES-ALTISENT MARIA ROSA
IPC: C07D249/08
Filed: 1991-07-25
Abstract: The invention relates to new compounds derived from benzimidazole, characterised in that they correspond to the general formula I, and to their therapeutically acceptable salts, 
<IMAGE>
 in which: 
 
  - R1 and R2, which may be the same or different, represent a hydrogen atom, a halogen, a lower alkyl radical, a hydroxyl radical, an alkoxy radical, an alkyl carboxylate radical, an aryl or substituted aryl radical, 
  - n can have the values 0 or 1, 
  - m can have the values 2 to 4, 
  - X, Y, Z and W, which may be the same or different, and even forming part of another aromatic or non-aromatic ring, represent a nitrogen atom or a carbon atom linked to a hydrogen atom, a halogen or to another alkyl, aryl, carboxyalkyl, carboxyl, hydroxyl, alkylhydroxy, sulphonic and alkylsulphonic radical. 
 
<??>The invention also relates to the process for preparing the compounds and to their use for the manufacture of medicaments intended for the prophylaxis and treatment of various histamine-induced allergic diseases.
Patent CA-2052441-A1 (CA)
Title: Use of triazine and pyrimidine derivatives to obtain drugs which reverse anti-cancer and anti-malaria drug resistance
Inventor: PARAMELLE BERNARD
IPC: C07D239/50
Filed: 1991-09-26
Abstract: Use, for obtaining medications reversing the resistance to anticancer and antimalarial agents, of compounds of formula I: 
<IMAGE>
 in which 
 
  - A denotes a -CH- group or a nitrogen atom, 
  - and B, R1, R2 and R3 are as defined in the description, and their physiologically tolerable acid addition salts.
Patent CA-2054704-A1 (CA)
Inventor: FRIEDRICH GUY
IPC: B60L11/18
Filed: 1990-04-26
Abstract: BREVET D'INVENTION Machine électrique autosynchrone à flux contrôlé Société Générale pour les Techniques Nouvelles SGN Inventeurs : Guy FRIEDRICH, Jean-Paul VILAIN. Abrégé descriptif L'invention concerne un ensemble de conversion électro-mécanique comportant une machine électrique susceptible de transformer de l'énergie électrique en énergie mécanique, constituée d'un stator (1), ou induit, dont les bobinages sont alimentés en courants polyphasés, d'un rotor (2) créant un champ inducteur et comportant un bobinage (5) alimenté en courant continu (IR) variable, et d'un capteur (11) de vitesse (n) ou de position (?) couplé au rotor, dans lequel le champ inducteur créé par le rotor (2) varie en fonction d'au moins un paramètre de fonctionnement du moteur suivant une loi de commande (?IR) établissant une relation de dépendance entre une consigne (CIR) d'intensité du courant (IR) dans le rotor et ledit paramètre de fonctionnement, ce qui permet d'obtenir un très fort couple à basse vitesse et un couple plus faible à grande vitesse, la machine étant alimentée sous une tension continue faible, par exemple par une batterie d'accumulateurs. Figure 4A.
Patent CA-2055795-A1 (CA)
Title: End cap for louvre
Inventor: ROSSITER ANTHONY L
IPC: E06B9/386
Filed: 1991-11-22
Abstract: ABSTRACT      This invention relates to an end cap for use with a hollow sheet metal louvre wherein the end cap 10 comprises an end wall 12, a shaft 16 on one side of the end wall for pivotal mounting of the end cap 10, upper and lower flanges 13 and 14 that extend along the upper and lower edges of the end wall 12 which in use extend over the upper and lower surfaces of the louvre 11, and resilient deformable gripping member 20 mounted between the upper and lower flanges 13 and 14 which in use allows the end cap 10 to be pushed onto the louvre 11 where the gripping member, which is located within the hollow louvre, bears against the sheet metal so as to hold the louvre 11 between the gripping member 20 and each upper and lower flange 13 and 14. In addition, the invention provides novel means for side by side stacking of assembled louvres, and a novel means is provided which allows the shaft 16 to engage a bracket 17 while at the same time preventing disengagement of the shaft in the normal operating position.
Patent CA-2056055-A1 (CA)
Title: Process for preparing polymer particles
Inventor: KENNEDY JOHN
IPC: B29B9/10
Filed: 1991-11-22
Abstract: ABSTRACT OF THE INVENTION          A process is provided for preparing particles of polymer by heating the polymer having an inherent viscosity not exceeding about 0.6 dl/g when measured at a temperature of about 30°C in chloroform or hexafluoroisopropanol, dividing the heated polymer into particles, and then solidifying these particles such that substantially no fibers are formed among the particles.
Patent CA-2056076-A1 (CA)
Inventor: WANG CHI-CHIN
IPC: B03C1/00
Filed: 1991-11-22
Abstract: Title Apparatus for Automatically Processing Magnetic Solid Phase Reagents ABSTRACT    An automatic chemistry system having a wheel for mounting reaction vessels is provided with a programmable permanent magnet which is selectively positioned adjacent a reaction vessel to separate magnetizable particles in the vessel from the vessels liquid contents.  This facilitates performing heterogeneous immunoassays.
Patent CA-2058611-A1 (CA)
Title: Inflator module
Inventor: VANVOORHIES KURT L
IPC: B60R21/276
Filed: 1991-12-30
Abstract: ABSTRACT OF THE DISCLOSURE     An airbag inflator comprises a housing having a frontal opening for the deployment of an airbag and a plurality of air aspirating and exhaust ports in the sidewalls  thereof.    An  airbag  is  folded  into  the housing so as  to overlie and close  the ports in the sidewalls thereof.   The airbag covers the ports in the housing  during  initial  deployment  of  the  airbag but subsequent deployment of the airbag opening the ports to first permit aspiration of the air into the housing and subsequently permit exhaust of air outwardly of the housing.
Patent CA-2059230-A1 (CA)
Title: Water level and exchange system
Inventor: TARJAN LASZLO JR
IPC: A01K63/04
Filed: 1992-01-17
Abstract: ABSTRACT OF THE DISCLOSURE    Disclosed is a system for replacing dirty aquarium water with fresh, clean aquarium water and making up for evaporation, thus keeping the aquarium water level constant.  The inventive system includes a passageway for supplying clean water to an aquarium, which passageway has a bypass port leading to a throat designed to cause a pressure reduction.  The throat is fluidly connected to an aquarium outlet located at the surface of the aquarium so that the reduction in pressure at the throat causes a suction effect to remove dirty water from the surface of the aquarium.  Downstream of the throat, the dirty water is conveyed to a waste outlet.
Patent CA-2063247-A1 (CA)
Title: Vacuum tube collector
Inventor: VAN ESDONK JOHANNES
IPC: F24S10/40
Filed: 1991-04-12
Abstract: The invention relates to a vacuum tube collector with a glass tube which is hermetically sealed at at least one end by the thermo-compression process. In the glass tube (1) is a metal sleeve (2) containing a hydride material (3).
Patent CA-2066224-A1 (CA)
Title: Amidine group-containing diphosphonic acid derivatives, processes for their preparation and medicaments containing these compounds
Inventor: BOSIES ELMAR
IPC: C07F9/6561
Filed: 1990-09-01
Abstract: Summary Compounds of the formula I                                           I, in which R can be hydrogen or C1-C4-alkyl, R1 hydrogen, C1-C6-alkyl, aryl, aryl-C1-C4-alkyl, amino-C1-C6-alkyl, C1-C6-alkylamino-C1-C4-alkyl, C1-C6-dialkyl-amino-Cl-C4-alkyl, Cl-C4-alkoxy-Cl-C4--alkyl ,~ Cl-C4-alkylthio-C1-C4-alkyl, C3-C7-alkenyl, R2 R1 or C2-C7-alkenyl, C1-C6-alkylmercapto, C1-C6 alkoxy, phenoxy-C1-C4-alkyl,amino, C1-C4-alkylamino, di-C1-C4-alkylamino, morpholino, thiomorpholino, pyrrolidino, piperidino, hexamethyleneimino, pyrazolino, imidazolino, n 0, 1 or 2  and R1 and R2, together with the carbon and the nitrogen atom to which they are attached, can form a heterocyclic five-, six- or seven-membered ring with 1 - 4 heteroatoms, whereby the heteroatoms can be the same or different and signify oxygen, nitrogen. or sulphur and the annelated ring can possibly be substituted by one or more C1-C6-alkyl, C1-C6-alkoxy, C1-C6-alkylmercapto groups, hydroxyl, amino, nitro, halogen or halomethyl, as well as their pharmacologically acceptable salts, processes for their preparation, as well as medi-caments which contain these compounds for the treatment of calcium metabolism disturbances.
Patent CA-2067882-A1 (CA)
Title: Subcutaneous tunneling device
Inventor: MCCRORY JENNIFER J
IPC: A61M25/00
Filed: 1992-05-01
Abstract: ABSTRACT OF THE DISCLOSURE          A novel subcutaneous tunneling device is disclosed which is particularly directed to long-term epidural catheters for relieving intractable pain, which catheters require tunneling from the  paravertebral  incision  where  the  catheter  is introduced into the epidural space to a lateral location where administration of a narcotic is more conveniently handled.  The tunneling device consists essentially of a hollow shaft having a solid removable cutting tip on one end thereof.  Following removal of the solid cutting tip, a catheter, cannula or other tubular article may then be passed through the shaft.
Patent CA-2073829-A1 (CA)
Title: Cleaning composition
Inventor: INSTONE TERRY
IPC: C11D3/02
Filed: 1992-07-14
Abstract: A B S T R A C T                  CLEANING COMPOSITION            Problems of stability have bedeviled formulations of aqueous, liquid abrasive cleaning compositions comprising soluble abrasive particles.  One factor which can influence the stability of aqueous compositions is the high level of electrolyte present in the compositions: ie. the soluble abrasive is typically immersed in an aqueous medium which is saturated with respect to that abrasive in solution.  The electrolyte level varies with temperature and this can have detrimental effects on the product.  We have now determined that these problems can be overcome by use of an essentially hydrophobic perfume composition as a stability enhancer in a pourable, aqueous, hard surface cleaning composition comprising water-soluble abrasive. Consequently, the present invention provides a pourable, aqueous, hard-surface cleaning composition comprising a water soluble abrasive, at least part of the abrasive being present as undissolved particles having a mean particle diameter of from 10 to 500 microns, further comprising and essentially hydrophobic perfume composition and a detergent, said composition remaining stable after storage at 37°C for twelve weeks or remaining stable after twelve temperature cycles from -5°C for eight hours to 25°C for sixteen hours.          .
Patent CA-2075239-A1 (CA)
Inventor: SHEN CHAO C
IPC: E05B55/00
Filed: 1992-08-04
Abstract: A key-in-lever type door lock which can be installed on either a left hand or right hand door by a left-right reverse operation of a reverse plate. The lock comprises a lock assembly which regulates a uni-directional, 45-degree rotation of a handle thereof and a latch assembly which converts the 45-degree rotational movement to a retraction of a latch bolt. The lock is jimmy-proof, i.e., secure against improper manipulation, by the provision of a latch stop pivoted to the latch bolt and being movable together therewith. The latch stop, which has a catch end normally blocked by a retaining plate, is operationally pivotable about the latch bolt to release the blockage, thereby permitting a relative sliding movement between the latch stop and the retaining plate.