baber/WOPTO huggingface dataset:
Patent CA-2018097-A1 (CA)
Title: Avermectin derivatives
Inventor: MROZIK HELMUT
IPC: C07H19/01
Filed: 1990-06-01
Abstract: TITLE OF THE INVENTION          AVERMECTIN DERIVATIVES          ABSTRACT OF THE DISCLOSURE        There are disclosed novel avermectin derivatives wherein the outer oleandrose ring of avermectin or avermectin monosaccharide is homologated by addition of diazomethane to 4"- or 4'-oxo-avermectin to afford the oleandrose 4"- or 4'-spiro-epoxide.  The homologated avermectins can then be further derivatized to afford additional novel avermectins. The new compounds are potent antiparasitic agents, in particular, the compounds are anthelmintic, insecticidal and acaricidal agents.
Patent CA-2022777-A1 (CA)
Title: Amines catalysis
Inventor: DOUMAUX ARTHUR R JR
IPC: B01J21/10
Filed: 1990-08-07
Abstract: AMINES CATALYSIS     Abstract Process of making amines by inter alia the (i) intramolecular condensation of an amino compound to an amine having a lower molecular weight or (ii) the intermolecular condensation of an amino compound with one or more of another amino compound or a compound containing an alcoholic hydroxyl group using a Group IVB metal oxide condensation catalyst.  The preferred process involves the manufacture of alkyleneamines, most desirably polyalkylenepolyamines, by such condensation reactions utilizing catalysts containing titanium oxide, zirconium oxide or mixtures of them.
Patent CA-2022929-A1 (CA)
Inventor: KAWADE HISAAKI
IPC: G11B9/04
Filed: 1990-08-08
Abstract: The present invention provides a recording medium comprising a recording layer on an electrode substrate and one or a plural number of fine lone electrode made of an electroconductive material provided on said recording layer.
Patent CA-2023211-A1 (CA)
Title: Process for the recovery of gold
Inventor: DADGAR AHMAD
IPC: C22B3/18
Filed: 1990-08-14
Abstract: FOREIGN PATENT            ABSTRACT               Process for recovering gold from a leachate containing AuBr4- comprising contacting the leachate with a quantity of sphagnum peat moss under conditions effective to concentrate the gold on the moss,  and thereafter recovering the gold from the sphagnum peat moss.
Patent CA-2024596-A1 (CA)
Title: Catalyseurs a base de compose organique de l'etain, utilisables dans des systemes de polyurethane
Inventor: NICHOLS JAMES D
IPC: B01J31/12
Filed: 1990-09-04
Abstract: es organoétains de formule R2Sn?X-R1-OH]2, où R est un groupement alkyle ou aryle en C1-C8, R1 est un groupement hydrocarbylique divalent en C2-C9 pouvant renfermer un substituant hydroxyle et X est un groupement de liaison pouvant être -5- ou -O2C-, sont utiles comme catalyseurs pour la réaction d'un polyisocyanate ou d'un polyisocyanate partiellement séquencé avec un composé hydroxylé.
Patent CA-2025168-A1 (CA)
Title: Resin transfer molding preform and method
Inventor: JOHNSON CARL F
IPC: B29C61/00
Filed: 1990-09-12
Abstract: ABSTRACT OF THE DISCLOSURE   A resin transfer molding preform is disclosed comprising a formation of fiber reinforcement material and a web in direct contact with the formation and encapsulating at least a portion thereof, i.e., the web secured or fixed to the fiber reinforcement material mechanically or by adhesion, etc.  A method of making certain of the resin transfer molding preforms of the invention comprises spraying random chopped fiber reinforcement material onto a forming member while drawing a vacuum through the forming member,  applying a web over at least a portion of the fiber formation while it remains on the forming member, and compressing the fiber reinforcement material under the web to reduce the loft thereof.  Also disclosed is a resin transfer molding process employing a preform according to the invention.
Patent CA-2026075-A1 (CA)
Title: Copolymers of carbon monoxide and olefinically unsaturated compounds
Inventor: DRENT EIT
IPC: C08G67/00
Filed: 1990-09-24
Abstract: A B S T R A C T     COPOLYMERS OF CARBON MONOXIDE AND OLEFINICALLY          UNSATURATED COMPOUNDS      Novel copolymers of carbon monoxide and olefinically unsaturated compounds are prepared by contacting a mixture of carbon monoxide, 5-norbornene-2,3-dicarboxylic acid or similar compounds, and optionally ethene with a Group 8 metal/phosphorus bidentate ligand catalyst in the presence of a C8+-alkanol.
Patent CA-2027008-A1 (CA)
Title: Production of aromatic polyimide membranes
Inventor: EKINER OKAN M
IPC: B01D71/64
Filed: 1990-10-05
Abstract: TITLE      PRODUCTION OF AROMATIC POLYIMIDE MEMBRANES            Abstract A process of producing a polyimide gas separation membranes comprising adding an oligomeric or polymeric aromatic epoxy resin to the dope solution, the resin being soluble in the polyimide or polyamic acid precursor, the solvent and the final membrane and the membrane comprising a blend of the polyimide and the resin.
Patent CA-2027916-A1 (CA)
Title: Method and formulation for creatine kinase isoform separation
Inventor: GUADAGNO PHILIP A
IPC: C12Q1/48
Filed: 1990-10-18
Abstract: METHOD AND FORMULATION FOR CREATINE KINASE ISOFORM SEPARATION                ABSTRACT OF THE DISCLOSURE           An improved gel formulation and method for high-voltage, short duration electrophoretic separation of isoforms of CK isoenzymes.  The gel is an homogeneous mixture of agarose and a buffer having a molarity of about 0.05M.          CK-MM and/or CK-MB isoforms are electrophoretically separated.
Patent CA-2027976-A1 (CA)
Inventor: SCHWYN BERNHARD A
IPC: B41M5/41
Filed: 1990-10-18
Abstract: ABSTRACT        Described is a process  and apparatus  for printing on metal hollow bodies  therearound,  in particular a can body,  by means  of thermal transfer printing, wherein colour particles disposed on an auxiliary carrier are introduced under the application of heat and pressure by diffusion for example into a dyestuff-affinitive layer on the can body. The process and apparatus are such that the can body is briefly heated with the auxiliary carrier applied thereto and the transfer process which is initiated in that way is then brought to a conclusion at a preferably falling temperature. That provides visually sharp images on the can body, by suppression of the lateral migration of the dyestuff molecules during the transfer operation, to provide a satisfactory closed printing effect at  the  overlap region of  the auxiliary carrier.
Patent CA-2028021-A1 (CA)
Inventor: TONO HIDEO
IPC: C09K11/84
Filed: 1990-10-19
Abstract: A phosphor comprising phosphor particles and a surface treating material attached or coated on the phosphor particles, wherein said surface treating material comprises zinc and a polycarboxylic acid.
Patent CA-2028712-A1 (CA)
Inventor: BIGI LEONARDO
IPC: A61M25/00
Filed: 1990-10-29
Abstract: The  invention relates to a device for conveying  blood flow  during  liver  surgery,   characterized  in  that   it comprises  a first tubular element with a sealingly slidable internal  obturator adapted to be inserted in the body of  a patient passing through the right external jugular vein, the right  atrium of the heart and the superior vena cava to  be connected  to  the inferior vena cava,  said  first  tubular element having,  in such a position as to be external to the patient's  body after insertion has occurred,  a  connection with a second tubular element adapted to be connected to the vena  portae,  and being furthermore provided  with  through holes in the portion of wall intended to be comprised inside the atrium of the heart.
Patent CA-2030569-A1 (CA)
Title: Isoindolone derivatives, preparation thereof and pharmaceutical compositions containing the same
Inventor: DUBROEUCQ MARIE-CHRISTINE
IPC: A61K31/44
Filed: 1990-11-22
Abstract: New isoindolone derivatives of general formula (I) in which the radicals R are hydrogen atoms or, together, form a bond, the symbols R' are phenyl radicals which may be substituted with a halogen atom or a methyl radical at position 2 or 3, X is an oxygen or sulphur atom or a radical N-R3, R3 being H, alkyl, optionally substituted, or dialkylamino, R1 is phenyl, optionally substituted, cyclohexadienyl, naphthyl or heterocyclic, R2 is H, halogen, OH, alkyl, aminoalkyl, alkylaminoalkyl, dialkylaminoalkyl, alkyloxy, alkylthio, acyloxy, carboxy, alkyloxycarbonyl, optionally substituted, benzyloxycarbonyl, amino or acylamino, in their (3aR,7aR) forms or in the (3aRS,7aRS) form or mixtures thereof, where appropriate their salts where they exist and their preparation. 
<??>The new derivatives according to the invention are especially advantageous as substance P antagonists. 
<IMAGE>
Patent CA-2031781-A1 (CA)
Title: Process for preparing one or more light hydrocarbon oil distillates
Inventor: NIESKENS MARTIN J P C
IPC: B01J23/84
Filed: 1990-12-07
Abstract: A B S T R A C T           PROCESS FOR PREPARING ONE OR MORE LIGHT      HYDROCARBON OIL DISTILLATES      A process for preparing one or more light hydrocarbon oil distillates comprising: a) hydrocracking a first hydrocarbon oil fraction, b) catalytically cracking a second hydrocarbon oil fraction substantially identical to the first hydrocarbon oil fraction or differing therefrom, c) separating the product obtained in step b) by means of distillation into one or more distillates and a residue, d) subjecting the residue obtained in step c) together with the first hydrocarbon oil fraction to the hydrocracking in step a), and e) isolating one or more light hydrocarbon oil distillates from the products obtained in steps a) and b).     MKl.T5019FF
Patent CA-2032006-A1 (CA)
Title: Picnic table and bench combination
Inventor: SMITH JACK K
IPC: A47B3/14
Filed: 1990-12-11
Abstract: ABSTRACT OF THE DISCLOSURE         Picnic tables and the benches used therewith are usually bulky structures, which are difficult to transport and equally difficult to store.  A relatively simple solution to the problem includes a table defined by a top panel, which is usually wooden planks, a crossbar near each end of the bottom surface of the top panel with outwardly opening recesses in the ends of the crossbar for slidably receiving the ends of benches, whereby a bench can be slid fully under each side of the table, and pivotally mounted on the top panel near each end of the table between the crossbars for rotation to a collapsed position between such crossbars.  The benches also include top panels and legs pivotally connected thereto for rotation to a flat collapsed position against the top panel.          The spacing between the bench legs is such that the legs are located between the table crossbars when the benches are slid beneath the table.
Patent CA-2035669-A1 (CA)
Title: Self focussing optical laser
Inventor: HORSLEY PETER B
IPC: H01S3/081
Filed: 1991-02-04
Abstract: ABSTRACT   This invention relates to the means for amplifying and focussing the radiant energy of a laser. In the usual method, parallel rays are selected out for amplification by attenuating all other rays from the input energy flash or pulse. The result is that only a very small portion of the original energy pulse is utilized. To focus the radiant energy output the rays are passed through a lense system, and a secondary loss of energy occurs as the rays pass through the various surfaces of the lenses. My invention overcomes these disadvantages by, firstly, shifting the amplification process to a prior phase before the rays are selected for parallelism, and secondly, by adapting the shape of the laser body to optically focus the amplified rays by internal reflections, thus avoiding the losses to the surfaces of a lense system. It is known that when a population inversion of the contributing electrons is triggered to release energy in the lasing substance, the new photons mainly move in the same direction as the triggering photons. This factor permitsamplification to proceed prior to and during focussing, and a large proportion of the original flash energy is thus utilized. A further advantage is achieved by the automatic optical focussing of the rays, which makes the output beam as narrow and sharp as desired for whatever type of laser application is required.
Patent CA-2038553-A1 (CA)
Title: Kingdom pipe caping kit
Inventor: LABELLE RICHARD
IPC: F16L41/04
Filed: 1991-03-15
Abstract: Abstract With  the increasing enviromental polution of  God's planet it is nessasary that we devise tools and plans to save this earth.                This   kit  has  been  invented  to  stop unforseen  polution  of  major  spills  of  any  kind  of chemical  that cannot be stopped with just shutting off a tap.               One example is to stop the flow of a major oil  well  that  is  burning out of control as quickly as possible  with not only minimal, but with no loss of life in trying to stop it.             Generaly  oil  wells  will  burn  out  of control   for  months  some  times  years  causing  major enviromental   damage.   This  can  cut  that  time  down considerably which in turn would save our enviroment plus a lot of money for those owning the oil wells, In  other words oil well burning could be eliminated  if  all  oil wells to be drilled in the futur were  equiped with one of these kits attached to the well before drilling starts. Also if all depot of all types of chemical were also equiped.         Plus it should be law in all countries.                Compared  to  the now existing method of extinguising  blow out,the method describe hereafter will revolutionize  our  way of thinking about it and also our way of doing it.                  In  other words first we should plug up the  spill and than look to save the wells. This kit will be able to do this task plus even save a major portion of these wells.     pg 1
Patent CA-2040111-A1 (CA)
Title: Corner piece for vinyl siding retainers
Inventor: FREDETTE RICHARD
IPC: E06B3/964
Filed: 1991-04-09
Abstract: ABSTRACT OF THE DISCLOSURE   The invention relates to a corner piece suitable for covering junctions between adjacent horizontal and vertical retainer strips mounted about right-angled openings in the walls.    The  corner piece  is  provided with  a  pair  of perpendicularly connected generally J-shaped legs, each leg having a first flange provided with openings for attachment to the wall, a bottom plate extending at a perpendicular angle to the end of the first flange opposite said openings and a second flange extending perpendicularly to the bottom plate and in a parallel relationship to the first flange. Extending inwardly along the joint between the first leg and the second leg is a raised ridge which prevents movement of the retaining strips past the point of connection between the  first  and  the  second  legs  of  the  corner  piece. Provision of the raised ridge also facilitates drainage of water along the channels formed by the corner piece.
Patent CA-2040619-A1 (CA)
Title: Photocurable self-retainable gel, shaped article prepared therefrom, applications and preparations thereof
Inventor: HAGIWARA YOSHICHI
IPC: H05K3/00
Filed: 1991-04-17
Abstract: ABSTRACT OF THE DISCLOSURE           A photocurable gel suitable for articles such as printing plates, photoresists and the like is disclosed.  The photocurable gel comprises (a) a polymer composition having isotactic polymethyl methacrylate moiety; and syndictactic polymethyl methacrylate moiety; (b) a photopolymerizable ethylenically unsaturated compound; and (c) a photopolymerization initiator.  The gel is solid at ambient temperature and is capable of undergoing reversible gel/sol transition by heating or cooling. Methods of preparing articles, as well as methods of fixing articles, which use the gel are also disclosed. Such methods include sealing or affixing component parts on an electronic circuit board.
Patent CA-2043295-A1 (CA)
IPC: F01N13/04
Filed: 1991-05-27
Abstract: ABSTRACT OF THE DISCLOSURE         An exhaust gas purification system for an internal combustion engine includes a dual passage portion having a first passage and a second passage which are connected in parallel to each other.  In the first passage, a first catalyst constructed of lean NOx catalyst is located and further a second catalyst constructed of oxidizing catalyst or three-way catalyst is located downstream of the first catalyst.  In the second passage, a third catalyst constructed of oxidizing or three-way catalyst is located.          A flow switching valve is provided so as to switch the flow of exhaust gas between the first passage and the second passage.  The flow switching valve is switched so that exhaust gas flows through the third catalyst when the engine is being warmed-up and flows through the first catalyst and the second catalyst after the engine has been warmed-up.
Patent CA-2043808-A1 (CA)
Title: Electrically operated screw-type jack
Inventor: BYUN DAE-SOO
IPC: B66F3/20
Filed: 1991-06-04
Abstract: ABSTRACT OF THE INVENTION    An electrically operated screw-type jack comprising a support base,  a housing,  a jack body,  a lifting ram being contained in the jack body, a servo motor being contained in the housing,  reduction gears for transmitting the driving power of the servo motor to the lifting ram, a safety device for preventing the servo motor and the power transmitting mechanism including the reduction gears from an abrupt failure in overloading the jack,  and a square head pin for hand operation of the jack when there is an overload on the jack.          The reduction gears consist of first sun and planet gears, second sun and planet gears and a sun gear cylinder.   The safety device consists of a clutch disk, a clutch spring and a sleeve.   The present invention can provide an electrically operated screw-type jack which can promote the driving power of the servo motor, and prevent its power elements from an abrupt failure when there is an overload thereon.
Patent CA-2044084-A1 (CA)
Inventor: WILLIAMS ROBERT M
IPC: B29C65/54
Filed: 1991-06-07
Abstract: A drain, waste and vent, DWV, pipe comprising an extruded PVC pipe with a coextruded external layer of ABS. A pipe joint is made with an ABS fitting by the use of an ABS cement.
Patent CA-2045774-A1 (CA)
Inventor: KAJIWARA SHINZO
IPC: B60C9/22
Filed: 1991-06-26
Abstract: A pneumatic tire is provided herein for mounting on a regular rim having a flange, thereby to provide a tire and rim combination. The pneumatic tire preferably comprises a tread portion, a pair of sidewall portions extending from the tread portion, a pair of axially-spaced bead portions each having a bead core and a carcass extending between the bead portions and turned-up around the bead cores from axially-inside to outside for forming a main portion and a turned-up portion in each bead portion, each of the turned-up portions having a radially-outer end with a radial height of at least 50 % of the tire section height measured from the bead base line. A bead apex, which is made of hard rubber is disposed between the main portion and the turned-up portion in each bead portion, the bead apex extending radially-outwardly and tapering from the bead core to a radially-outer end which is located at a radial height of less than 13 %  of the tire section height and not more than the radial height of the radially-outer end of the flange when the tire is mounted on its regular rim, each measured from the bead base line. A first height modulus cord reinforcing layer of high modulus reinforcing cords is disposed in each of the bead portion and the sidewall portion, the first reinforcing layer extending radially-outwardly from an inner end into the sidewall portion and past the radially-outer end of the bead apex to a radially-outer end with a radial height greater than 25 % of the tire section height, each measured from the bead base line so that the portion of the first reinforcing layer radially-outward of the radially-outer end of the bead apex is adjacent at least to one of the turned-up portion and to the main portion in each bead portion. A second high modulus cord reinforcing layer of high modulus reinforcing cords is disposed in each of the bead portion and the sidewall portion.
Patent CA-2045853-A1 (CA)
Title: Circuit breaker with tamper indicating calibration means
Inventor: MRENNA STEPHEN A
IPC: H01H73/06
Filed: 1991-06-27
Abstract: A circuit breaker with a thermal trip has a calibration opening in the electrically insulating housing through which a tool may be inserted and rotated to distort a support plate on which a bimetal is mounted to calibrate the thermal trip after the circuit breaker has been fully assembled and enclosed within the insulating housing. A tamper indicating seal in the form of a destructible film secured over the calibration opening by an adhesive having an adhesive strength exceeding the tensile strength of the destructible film provides a visual indication of any subsequent attempts to tamper with the calibration setting.
Patent CA-2050906-A1 (CA)
Title: Process for preparing citral
Inventor: CHABARDES PIERRE
IPC: C07C45/82
Filed: 1990-12-28
Abstract: his invention involves an improved procedure for preparing liquid phase citral from prenol and prenal in which, in the same reaction container, the prenal and prenol are condensed in the presence of a mineral acid to a concentration of about 5.10-3 mole for one mole of prenal; 90 to 90% of the acid introduced is neutralized and after the excess prenal and prenol have been removed, the citral is distilled.
Patent CA-2050998-A1 (CA)
Title: Purification and decolorization of off-color alkyl alkanolamines
Inventor: OVERGAARD THOMAS H
IPC: C07C213/10
Filed: 1991-09-09
Abstract: Abstract of The Disclosure Off-color N-(C4-C1O)alkyl di(C2-C3) alkanolamines purified and decolorized by vacuum distillation at a pressure within the range of 1 to 50 mm.Hg (1-50 torr) in the presence of water and or water-soluble metal borohydride whereby the distilled alkanolamine has a reduced APHA color rating which is maintained on storage.
Patent CA-2051717-A1 (CA)
Title: Method of maintaining synchronization of a free-running secondary processor
Inventor: BRISTOW ROBERT W
IPC: G06F9/52
Filed: 1991-09-18
Abstract: Data bases of a first and second input output processor (IOP), which are primary and secondary slave IOPs, respectively, are synchronized, and communications by a master controller is made only to the first IOP.     Each IOP is executing the same tasks utilizing their own clocking systems. A method for maintaining synchronization between the first and second IOP comprises the steps of transmitting a message addressed to the first IOP by the master controller.  The first IOP receives the message for subsequent execution.  Receipt of the message is acknowledged by a transmission back to the master controller the acknowledge message including a message number.  The second IOP eavesdrops on the transmissions between the master controller and any of the IOPs on the network.  Upon recognizing that the message is addressed to the corresponding first IOP and that the message is of a predetermined type, the second IOP receives the message for subsequent execution.  The second IOP verifies the message number in the acknowledge message, the message number being determinable by the second IOP, such that when both the first and second IOP complete execution of the received message which results in an update of the respective data bases, both data bases continue to contain the same information thereby maintaining synchronization.