baber/WOPTO huggingface dataset:
Patent CA-2014183-A1 (CA)
Title: Apparatus for treating gases
Inventor: SCHMID PETER J
IPC: F23J/
Filed: 1990-04-09
Abstract: A B S T R A C T            Apparatus  for treating  gases, in  particular flue gases, said apparatus   comprising  a   hollow  casing   extending   mainly vertically  and holding  various built-in  components, such  as floors,  column separators, gas washers and such like. In order to  achieve an even flow through the apparatus across the whole of  its cross-section  when large  amounts of  gases have to be treated,  it is  arranged that casing is subdivided by at least two  crossing partitioning  walls, whereby  fixing devices  are arranged  both on  the partitioning  walls and  on the interior walls  of  casing,  said  fixing  devices  being  intended  for placing  on to  it various  components to  be built in, such as floors,  column separators,  demisters,  spraying  devices  and such-like,  and that  casing comprises  connections or openings for   pipes  and   that  guiding   plates  are   intended   for distributing  the gas flow to the subdivisions of cross-section of casing.
Patent CA-2016269-A1 (CA)
Title: Pressure differential release valve
Inventor: LINDENMAN CHARLES E
IPC: B60T8/42
Filed: 1990-05-08
Abstract: ABSTRACT OF THE DISCLOSURE        The pressure  differential  release  valve  (130) comprises  a  three-part  body having  a  first end member (132),  an intermediate body member  (133),  and a second end member (134).  The members (132, 133, 134) define an interior  stepped  bore  (1393  containing  a  differential area piston (141) and a poppet (161).  The differential area piston (141) and poppet (161) have respective longi-tudinal through-openings (142,  162) and the poppet (161) engages a valve seat (168) of the body.  The longitudinal through-opening (162) of the poppet (161) includes a ball valve (165) biased by a spring (166) into engagement with a valve seat (164) of the poppet (161).  The piston (141) abuts the poppet (161) at an end (151) adjacent the valve seat (164) of the poppet (161).  Fluid pressure received at an end (135) opening in the first end member (132) is transmitted  through  the body and exits  an end opening (136) at the second end member (134).  The fluid pressure displaces the ball valve (165) against the spring (166) so  that  fluid  flows  around  the  ball  valve  (165)  and through  the  longitudinal  through-opening  (162)  of  the poppet (161).  A reverse flow of  fluid between the end openings  (135,  136)  causes,  at a predetermined pressure differential,  the piston  (141)  and  poppet  (161)  to be displaced within the  stepped  bore  (139)  so that fluid flows around the poppet (161) and into the longitudinal through-opening  (142)  of  the piston  (141)  whereby the ball valve (165) within the poppet (161)  is effectively bypassed.
Patent CA-2018587-A1 (CA)
Title: Coating material, process for the preparation of coatings and substrates coated therewith
Inventor: ESSER KLAUS
IPC: C09D7/80
Filed: 1990-06-08
Abstract: Abstract of the disclosure Coating material, process for the preparation of coatings and substrates coated therewith The invention relates to a coating material for the preparation of coatings, in particular multi-layer paint coatings composed of at least one base layer and, if appropriate, at least one transparent cover coat, the coating  material  containing  film-forming  resin (A), cellulose esters (B), solvents (C), metallic pigments (D) and, if appropriate, crosslinking agents (E) and also, if appropriate,  further paint additives (F), wherein the cellulose ester (B) has an acetyl content of 2.0 to 30 % by weight, a butyryl content of 17 to 53 % by weight and an average molecular weight M? of at least 25,000, this cellulose  ester (B)  having been  introduced  into the coating material in the form of a pasty, thixotropic premix.            The invention also relates to a process for the prepar-ation of a multi-layer coating and to the substrates thus coated.            The coating materials according to the invention are distinguished, inter alia, by high solids contents at low viscosities, and afford coatings with fault-free metallic effects.
Patent CA-2018781-A1 (CA)
Title: Method of modifying the surface of glass substrate
Inventor: TAGAMI TAKASHI
IPC: C03C23/00
Filed: 1990-06-12
Abstract: ABSTRACT OF THE DISCLOSURE      A method of modifying the surface of a glass substrate by using ion implantation, wherein a portion of the glass substrate implanted with ions is heated by using laser beams during or after ion implantation.
Patent CA-2021165-A1 (CA)
Title: Isotropic or anisotropic microporous syndiotactic polystyrene membranes and processes for preparation
Inventor: BECK HENRY N
IPC: B01D71/28
Filed: 1990-07-13
Abstract: ABSTRACT     This invention relates to semi-permeable isotropic or anisotropic syndiotactic polystyrene microporous membranes and processes for preparing such membranes.     38,009A-F
Patent CA-2022029-A1 (CA)
IPC: H03K19/00
Filed: 1990-07-26
Abstract: Abstract An automatic system for adjusting the output impedance of fast CMOS drivers which measures and corrects impedance mismatch  between  a  dedicated  reference  driver  and  a dedicated   reference   transmission  line   and   which correspondingly adjusts the output impedance of a number of slave drivers.  The output impedance of the reference driver is measured by feeding a clock signal to the input of the reference driver and then by measuring the voltage at the input of the reference transmission line at the centre of the positive half of the clock signal.   The measured voltage is compared with a reference level and, accordingly,  a voltage pulse is supplied to charge or discharge a capacitor whose terminal voltage controls of the driver output impedances. The reference transmission line  is  terminated  by  a  resistance  equal  to  its characteristic impedance.
Patent CA-2022060-A1 (CA)
Title: Multi-level stacked mold system
Inventor: TRAVAGLINI NICK
IPC: B29C45/27
Filed: 1990-07-26
Abstract: An injection mold for use with a molding press has four mold levels in axially stacked relation, permitting a substantial doubling of output for a given size of press as compared with a back-to-back two level stacked mold. The mold feeder flow path extends axially from the injector head to a flow distribution block located at the centre of the stacked mold block series. The centrally located distribution block is connected, in use isolation, sealed relation with the injector head, being axially displaceable therefrom in contin-uing sealed relation upon the opening of the mold. A drool prevention valve system, located at two of the mold inter-faces, to preclude drooling of fluid plastic stock upon open-ing of the molds includes pressure fluid actuators for operat-ing the valves, wherein the pressure fluid may comprise the fluid plastic stock. The valve system also includes a de-pressurizing valve provision, wherein, upon opening of the mold interfaces the stock distribution passages are substan-tially depressurized, to thereby reduce any tendency to drool.      The mold includes axial adjustment means to compensate for differential variations in overall mold length within the press, due to changes in effective mold temperature.
Patent CA-2024089-A1 (CA)
Title: Method for on-line monitoring of an electric arc furnace and method of control
Inventor: GULDEN GEORGE JR
IPC: G05B19/05
Filed: 1990-08-27
Abstract: A method for on-line monitoring and/or control of an electric arc furnace utilizing a method of data transfer between a programmable logic controller and a microcomputer comprising monitoring data from the furnace over a fixed time cycle, assigning data values to the monitored data during such time cycle, dividing the fixed time cycle into a multiple of N time subintervals, arranging the data values into data subsets, assigning each of the data subsets to a designated time subinterval, transmitting data to the microcomputer in each time subinterval to execute program code corresponding to the data subset in such time subinterval and calculating control factors from the transmitted data for providing control information.
Patent CA-2024642-A1 (CA)
Inventor: NARUI TAKASHI
IPC: A61K31/57
Filed: 1990-09-05
Abstract: Water-containing external preparations are disclosed, which contain, as essential ingredients, (a) 0.05-1 wt.% of deprodone propionate and (b) 1-20 wt.% of a polyhydric alcohol. The water-containing external preparations physico-chemically remain stable even when stored over a long period of time, does not have skin irritation and side effects, and exhibit superb curative effects.
Patent CA-2027485-A1 (CA)
Inventor: HEDGECOCK CHARLES J R
IPC: C07D487/04
Filed: 1990-10-11
Abstract: L'invention concerne un procédé pour préparer des produits de formule: (I) dans laquelle R3 représente dans lequel Ra représente un hydrogène, un alkyle (C1-5), cycloalkyle (C3-6) ou phényle, Y représente un oxygène ou un soufre, le pointillé représente une liaison éventuelle, R4 et R5 représentent un hydrogène, un alkyle (C1-5), un alkényle (C2-5) ou forment ensemble un alkylène ou alkénylène (C2-5), R7 et R8 représentent un hydrogène, un halogène, un radical nitro ou nitrile ou CX3 dans lequel X représente un halogène ainsi que leurs sels avec les acides. Les produits (I) possèdent d'intéressantes propriétés pharmacologiques et sont utiles comme médicaments notamment dans le traitement des troubles de la mémoire.
Patent CA-2032673-A1 (CA)
Title: Tyre and wheel rim assemblies
Inventor: STEPHENS PAUL
IPC: B60C15/024
Filed: 1990-12-18
Abstract: ABSTRACT            IMPROVEMENTS TO TYRE AND WHEEL RIM ASSEMBLIES     A tyre and wheel rim assembly for a vehicle,  the tyre (1) comprising a pair of bead regions each reinforced by a bead core (5) and the wheel rim (2) comprising a pair of bead seats (6,7) characterised by one bead region of the tyre having an additional retention zone (18) positioned axially inwards of and integral with the main bead region,  the retention zone (18) having an axially inner tip or -toe (21) substantially inwards of the main bead region and the construction of the bead between the bead core  (5)  and -tip (21)  providing substantial resistance to compressive forces therebetween, and the wheel rim (2) comprises axially inwards of and adjacent to one of the bead seats (6,7), which is that part of -the bead seat contacted by a standard tyre,  a circumferentially extending tooth (21) having a sharp edge inter-engaging only the retention zone  (18)  of the tyre at the tip (21) such that when lateral force is applied to the tyre tread and internal  inflation pressure  is  low, axially inward movement of the tip (21) is resisted by tip-to-tooth inter-engagement thus causing bead rotation about the tip (21)  and generation of compression force in those parts of the bead region between the tip (21) and the core (5) to provide bead retention at the bead seat.     The invention also provides a wheel rim and a tyre having the above features.
Patent CA-2033178-A1 (CA)
Title: Octadienyl ethers and a process for making octadienyl ethers
Inventor: GRUBER BERT
IPC: C07C43/178
Filed: 1990-05-03
Abstract: Alkadienyl ethers and esters are prepared by the telomerization of conjugated dienes with polyols, fatty alcohols, ethoxylated fatty alcohols and phenols, substituted phenols, mono- and disaccharides, alkyl glycosides, alkynoic acids, and hydroxy-substituted carboxylic acids. Processes for the telomerization of dienes with monools and polyols utilizing low palladium catalyst concentrations are carried out in the presence of secondary and tertiary alcohol solvent.
Patent CA-2035924-A1 (CA)
Title: Solenoid assembly
Inventor: KNIGHT JOHN H
IPC: H01F7/16
Filed: 1991-02-07
Abstract: ABSTRACT OF THE DISCLOSURE          "Solenoid Assembly"    A solenoid assembly for the actuation of a valve or the like in a downhole tool comprises a first yoke (2), coil (52) and armature (18) and a second yoke (12), coil (53) and armature (32), the second armature (32) being fixed to a shaft (40) and having a planar end face spaced from a planar end face of the second yoke (12) by a second distance, and the first armature (18) being slidable upon the shaft (40) and having a non-planar end face spaced from a complementary non-planar end face of the first yoke (2) by a first distance less than the second distance.  Energisation of the coils (52, 53) causes the first armature (18) to move towards the first yoke (2) until it mates therewith, thereby engaging a shoulder of the shaft (40) and moving the second armature (32) towards the second yoke (12), the second armature (32) subsequently mating with the second yoke under the attractive force between their planar faces.
Patent CA-2036806-A1 (CA)
Title: Ethylenically unsaturated, fluorine-containing urethane derivatives and process for their preparation
Inventor: HUTH HANS-ULLRICH
IPC: C07C271/28
Filed: 1991-02-21
Abstract: Abstract of the disclosure Ethylenically unsaturated, fluorine-containing urethane derivatives and process for their preparation Ethylenically unsaturated, fluorine-containing urethane derivatives  (see Formula  I)  whose urethane  group is substituted on its carboxyl radical by a fluorinated organic radical and on its nitrogen atom by an unfluori-nated, ethylenically unsaturated organic radical. Their preparation can be carried out by reacting ethylenically unsaturated, unfluorinated isocyanates with fluorinated organic hydroxyl compounds in bulk in the absence of water or advantageously in inert organic solvents or in ethylenically unsaturated monomers capable of polymeriza-tion which behave inertly under the reaction conditions, it being possible to obtain the urethane derivatives directly in liquid or highly viscous or waxy or solid or crystalline form.            Urethane derivatives prepared according to the invention are usually readily to very readily soluble in standard nonaqueous, nonpolar inert organic solvents or in various monomers capable of copolymerization. They can be poly-merized or copolymerized in a free-radical way and used to prepare polymers or copolymers.
Patent CA-2037059-A1 (CA)
Title: Three-dimensional optical data storage structure
Inventor: DANIELS KENT J
IPC: G11B7/24038
Filed: 1991-02-26
Abstract: ABSTRACT OF THE DISCLOSURE            A data storage medium is disclosed in which binary data may be stored in and read from a three-dimensional structure composed of a plurality of stacked recording layers.  Logical "1"s are stored as data cells located at predetermined data locations within each recording layer; whereas logical "0"s are recorded as the absence of data cells at the aforesaid data locations.   Various methods are taught for reading, writing and erasing data stored in the data storage medium.          Finally, an data recording and retrieval apparatus which uses the three-dimensional data storage medium of the invention is disclosed.
Patent CA-2038376-A1 (CA)
Title: Feed circuit in exchanger
Inventor: ITOH SHINICHI
IPC: H04M19/00
Filed: 1991-03-15
Abstract: ABSTRACT OF THE DISCLOSURE          A feed circuit in an exchanger supplies DC power to a subscriber line.  The DC power is monitored and feedback-controlled so that the DC power can be automatically adjusted.  Therefore, the feed circuit can satisfy various user's needs.
Patent CA-2038620-A1 (CA)
Inventor: ZBIKOWSKI STEVE
IPC: B01J16/00
Filed: 1991-03-19
Abstract: ABSTRACT            There  is disclosed  a  method  for  removing  soluble constituents in solid mixtures which consist of injecting a solvent at a high pressure to a slurry of the solid mixture moving along a flow path. An apparatus embodying this method is also disclosed which includes a reactor having a high pressure chamber which  comprises at least one  nozzle  surrounding  the  flow  path  of  the  slurry through which the solvent is injected.  Each nozzle is composed of two cylindrical components spaced from each other, the separation between them defining a plurality of axially aligned circumferential openings through which the  solvent  is  injected.  A system comprising such an apparatus  may  further  comprise  filtering  means  to separate the soluble constituents from the cleaned solid mixture.
Patent CA-2038816-A1 (CA)
Title: Method and composition for water treatment
Inventor: CAULFIELD PAUL R
IPC: C02F1/50
Filed: 1991-03-21
Abstract: A method for decolorizing a water body, particularly for clarifying the water and removing algae stains in a swimming pool, by establishing in the water body EDTA compound and ammonium ions by the addition of appropriate compounds, and a composition for decolorizing such a water body containing EDTA compound and ammonium salt.
Patent CA-2041964-A1 (CA)
Inventor: CORNIER GERARD
IPC: C03C15/02
Filed: 1991-05-07
Abstract: Process for treating the surface of a solid article made of a material having a vitreous structure, such as crystal, lead glass and the same, and containing some amounts of heavy metals such as lead, said surface being liable to be into contact with products of acid character, such as alcohols e.g cognac, whisky, wines or fruit juices, or acid foodstuffs, with a view to prevent said heavy metals from drifting into said acid products, characterized in that it comprises forming in a superficial area of said surface, after partially removing the lead ions from said area, a silico-aluminous diffusion barrier opposing said drift into said acid product, by ion exchange between said material having a vitreous structure and a coating temporarily laid upon said surface, said coating comprising a silico-aluminous crust resulting from the heating of a kaolin layer laid upon said surface under the form of a thixotropic barbotine of pure hydrated aluminium silicate.
Patent CA-2042407-A1 (CA)
Title: Light apparatus for illuminating a compact computer video screen
IPC: F21V33/00
Filed: 1990-07-11
Abstract: ABSTRACT OF THE DISCLOSURE    A  portable,  compact,  battery-operated  light  apparatus  for use with a compact computer game having a LCD video screen for enhancing the visibility of the LCD screen in use, which light apparatus comprises a body witha battery compartment and having side panels which define an open viewing space and lights provided in  the  body  element  to  provide  for  indirect  lighting  of  the viewing space, the light apparatus comprising a portable, compact, battery-powered  light  apparatus  and  which  includes  ridges  on the light apparatus which snap in a releasable manner onto the grooves  in a compact  computer game video system to releasably secure the light apparatus in position over the LCD video screen of the compact game system.
Patent CA-2044339-A1 (CA)
Title: Valve assembly
Inventor: COHEN SOLLY
IPC: F16K47/08
Filed: 1991-06-11
Abstract: ABSTRACT     A high pressure valve assembly has a bore with a seat intermediate its ends and an inlet on one side an outlet on the other side of the valve.  A double headed piston within the bore has a closure head between the seat and the outlet and a control head on the other side of the  inlet to the seat.   The control head has a slightly greater projected surface area facing towards the seat than the closure head.  There is a cage between the  seat  and  the  outlet,  which  defines  an  annular chamber about the bore between the seat and the outlet, the chamber opening into the outlet.  The cage has a number of rings of apertures spaced from the seat which are successively opened as the closure head moves away from the seat.   The closure head extends beyond the apertures and has a "U"-seal at its downstream end.  The control  head  also has  a  "U"-seal.   The  seals  face towards the seat.  The bore is closed by end caps.  The valve assembly is manually operable or by means of a control fluid.
Patent CA-2044424-A1 (CA)
Title: Splittable die
Inventor: HICKS KENNETH
IPC: B29C63/34
Filed: 1991-06-12
Abstract: A die 10 for reducing polyethylene pipe temporarily to enable it to be inserted in a pre-existing metal pipe is made of cast iron and has formations 20 by which the die is splittable into two portions. The formations receive cylindrical bars 14 which are squeezed together by a hydraulic squeeze off machine. Each formation is a U-shaped aperture with a saw cut 22 extending from the base of the U into the ligament beneath the formation. The saw cut acts as a stress raiser. In a modification only one formation is provided. The die is made of grey cast iron or some other brittle material.
Patent CA-2046717-A1 (CA)
Title: Method and apparatus for treating fibrous materials with a gaseous reagent
Inventor: CARLSMITH LAWRENCE A
IPC: D21C9/153
Filed: 1991-07-10
Abstract: Docket No.  1197-IR-PA              ABSTRACT OF THE DISCLOSURE     A method and apparatus for treating fluffed high consistency fibrous materials with gaseous reagents provides a mechanical mixing chamber with a dwell time sufficient to allow reaction of a substantial majority of the gaseous reagent prior to dispensing the mixture into a porous bed reaction and degasification chamber.  The gas flows through the porous bed of fibrous material in the reaction chamber until virtually all the active reagent has been consumed.  This results in uniformly treated fibrous materials and efficient reagent utilization.
Patent CA-2055334-A1 (CA)
Inventor: GERKEN MANFRED
IPC: C07B53/00
Filed: 1991-11-13
Abstract: BEHRINGWERKE AKTIENGESELLSCHAFT                  90/B 033 - Ma 863 Dr. Ha/Sd Abstract of the disclosure:            Semisynthetic diastereomerically pure N-glycidylanthra-cyclines, a process for the stereoselective preparation thereof and the use thereof as cytostatics The invention relates to anthracyclines having cytostatic activity and the formula I, which are, where appropriate, in the form of a salt with an inorganic or organic acid, I                 in which R1   is hydrogen or a hydroxyl group, R2   is hydrogen, a hydroxyl group or an alkyloxy group (C1-C4), R3   is hydrogen, a hydroxyl group or a structure of the formula II              II            R4   is CH2CH3, COCH3, COCH2OH, CHOHCH3 or CHOHCH2OH, R5   is hydrogen, a hydroxyl group,  a methoxycarbonyl group or a structure of the formula II, R5   is hydrogen, an alkyl group (C1-C4), an allyl group, a benzyl group or mono- or di-methyloxy-substituted benzyl group, a tetrahydropyranyl group, R7   is hydrogen, an alkyl group (C1-C4), an allyl group, a benzyl group or mono- or di-methyloxy-substituted benzyl group and R6   is a structure of the formula III or IV              III                 IV                  and to a process for the preparation of these compounds, which comprises reacting an anthracycline derivative of the structure I in which R1, R2 and R4 are as defined above, and R3 is hydrogen, a hydroxyl group or a structure of the formula V                   V            R5 is hydrogen, a hydroxyl group, a methoxycarbonyl group or a structure of the formula V and R6 and R7 are as defined above, with (R)- or (S)-glycidyl sulfonate.
Patent CA-2055827-A1 (CA)
Inventor: MENASCHE PHILIPPE
IPC: A01N1/02
Filed: 1991-11-19
Abstract: Perfusion and preservation and/or reperfusion solutions for surgery and organ transplantation, including that of the heart, a feature of which solutions is the inclusion of at least one antioxidant compound, such as a trapping agent for free oxygen radicals, in particular glutathione in the reduced state or N-acetylcysteine, said solutions possessing a zero or greatly reduced partial pressure of oxygen which is maintained substantially at this value up to the time of use. The solution is preferably presented in flexible bags impermeable to oxygen.