baber/WOPTO huggingface dataset:
Patent CA-2015396-A1 (CA)
Title: Device for generating electrons, and display device
Inventor: HOEBERECHTS ARTHUR M E
IPC: H01J3/02
Filed: 1990-04-25
Abstract: PHN 12.909                                                20-07-1989 ABSTRACT. Device for generating electrons, and display device.     A planar electron-optical lens is obtained on a semiconductor cathode surface by providing an extra electrode (16) around the gate electrode (14). Dependent on the applied voltage, this configuration operates, for example, as a positive lens which supplies parallel beams without dispersion, suitable for thin, flat display devices. A large positioning tolerance is obtained due to the inherent magnification of the beam diameter in the semiconductor device, while a grid can be dispensed with.
Patent CA-2015499-A1 (CA)
Title: Method and apparatus for loading pins for circuit boards
Inventor: FISHER JAMES
IPC: H05K3/30
Filed: 1990-04-26
Abstract: METHOD AND APPARATUS FOR LOADING PINS FOR CIRCUIT BOARDS     Abstract of the Disclosure An apparatus and method for removing pins from a bandolier type carrier and for loading groups of pins into a carrier block, for insertion into printed circuit boards. A bandolier carrying pins is moved along a passline and a group of a desired number of the bandoliered pins is posi-tioned in a pin loading station of the apparatus.  The pins are held by opposed gripping members, which are relatively movable towards each other into pin holding positions and are then operable to cause relative movement of the bandolier and the group of pins laterally of the passline, thereby separating the pins from the bandolier.  While pins of the group are held by the gripping members, relative movement of the carrier block and the group of pins causes ends of the pins to be received in pin receiving locations in the carrier block.  The pins are then released by moving the gripping members apart so that the pins remain in the carrier block.                             - i -
Patent CA-2017109-A1 (CA)
Title: Process for surface treatment of polyacetal resin molding for coating
Inventor: SUZUKI YOSHIHARU
IPC: C08L59/00
Filed: 1990-05-18
Abstract: ABSTRACT      A process for surface-roughening a polyacetal resin article includes subjecting the same to plasma treatment using a treatment gas selected from oxygen or an oxygen-containing compound, or halogen or a halogen-containing compound.  The plasma treatment is conducted within a plasma generating apparatus having a plasma treatment chamber into which the treatment gas may be introduced, and an electrode of selected surface area.  The power output (Po, expressed in the units Watts) of the electrode and/or the pressure (Pr, expressed in the units Torr) within the treatment chamber, are controlled so that the ratio Po/Pr is at least 1200 when oxygen or an oxygen-containing compound is used, or is at least 100 when a halogen or a halogen-containing compound is used.  Preferably, the electrode has a selected surface area (A, expressed in square centimeters) such that the ratio Po/A is at least about 0.2.
Patent CA-2017427-A1 (CA)
Title: Waveguide electrooptic light modulator with low optical loss
Inventor: YOON HYUN-NAM
IPC: G02B6/12
Filed: 1990-05-24
Abstract: ABSTRACT OF THE DISCLOSURE        In one embodiment this invention provides a thin film waveguide electrooptic light modulator which consists of (1) a laminated assembly of a waveguiding thin film of an organic polymer which exhibits second order nonlinear optical response, and upper and lower organic polymer blend cladding layers, each of which has a lower index of refraction between about 0.002-0.02 lower than the waveguiding thin film, and which exhibits second order nonlinear optical response  and (2) electrodes which are positioned to apply an electric field to the laminated assembly.
Patent CA-2021573-A1 (CA)
Inventor: KHAZAI BIJAN
IPC: B01J23/28
Filed: 1990-07-19
Abstract: A process far the production of olefins and diolefins, such as 1,3-butadiene, comprising contacting an aliphatic hydrocarbon, such as butane, with a heterogeneous catalyst composition containing reactive oxygen under reaction conditions such that a more highly unsaturated aliphatic hydrocarbon is selectively formed in a high productivity. The catalyst is a composition comprising a catalyst component of magnesia, an oxide of molybdenum, a Group IA metal oxide promoter, and optionally vanadium oxide. In a preferred embodiment, the catalyst composition also comprises a support component of magnesium and alumina and/or magnesium aluminate spinel. The present catalyst has high surface area and high attrition resistance.
Patent CA-2023143-A1 (CA)
Title: 2-(heterocyclylheteroaryliumalkyl) phenyl carbapenem antibacterial agents
Inventor: DININNO FRANK P
IPC: A61K31/40
Filed: 1990-08-13
Abstract: TITLE OF THE INVENTION 2-(HETEROCYCLYLHETEROARYLIUMALKYL)PHENYL CARBAPENEM ANTIBACTERIAL AGENTS     ABSTRACT OF THE DISCLOSURE        Carbapenems having the formula:       (I.) are useful antibacterial agents.
Patent CA-2026928-A1 (CA)
Title: Semiconductor device
Inventor: SHIGA NOBUO
IPC: H01L27/144
Filed: 1990-10-04
Abstract: ABSTRACT OF THE DISCLOSURE:   If a resistance of a signal receiving section is increased to improve sensitivity of a semiconductor device used for a light-receiving circuit, a bandwidth is narrowed.  If a capacitance of a capacitor for removing a DC component of a received signal is increased to widen a bandwidth, a stray capacitance generated in the capacitor is increased.  For this reason, according to this invention, a circuit element is formed on an upper surface of a semiconductor substrate having a predetermined region where a crystal structure is destroyed, and a conductive pattern is formed on a back surface of the semiconductor substrate located under the predetermined region.  Therefore, almost no change in charge occurs in the circuit element and the conductive pattern formed to sandwich the predetermined region where the crystal structure is destroyed.  Even if a chip carrier type light-receiving element is used to reduce a ground-capacitance generated in the light-receiving element, the ground-capacitance cannot be sufficiently reduced.  For this reason, according to this invention, the first conductive pattern set at a reference potential and a second conductive pattern which is electrically isolated from the first conductive pattern and is applied with a reception signal voltage are formed on a back surface of a circuit board, and a circuit element is mounted on an upper surface of the circuit board located above the second conductive pattern.  Therefore, a change in voltage occurring in the circuit element is almost equal to a change in voltage in the second conductive pattern formed on the back surface of the circuit board, resulting in almost no ground-capacitance is generated.
Patent CA-2027335-A1 (CA)
Title: Expanding thermoplastic beads with very high frequency energy
Inventor: ALLEN RICHARD B
IPC: C08J9/14
Filed: 1990-10-11
Abstract: Expandable thermoplastic resin beads coated with a novel very high frequency energy absorbing material are expanded with microwave energy.
Patent CA-2027773-A1 (CA)
Inventor: UENO RYUJI
IPC: A61P9/00
Filed: 1990-10-16
Abstract: A use of a cyclodextrin or a derivative thereof for the manufacture of a medicament for treatment of shock.
Patent CA-2030363-A1 (CA)
Title: Radiation sensitive devices
Inventor: MURRAY DAVID E
IPC: G03F7/00
Filed: 1990-11-20
Abstract: ABSTRACT Improvements in or relating to radiation sensitive devices A radiation sensitive device is provided with a discontinuous covering layer to improve vacuum draw down.  The covering layer is produced by forming a solution or dispersion of the layer-forming material in a liquid hydrocarbon.  Drops of the solution or dispersion are then sprayed onto the radiation sensitive device to form the discontinuous covering layer.
Patent CA-2030583-A1 (CA)
Title: Vertical internal combustion engine with overhead valves
Inventor: KOBAYASHI KAZUYUKI
IPC: F02F1/32
Filed: 1990-11-23
Abstract: A vertical internal combustion engine having overhead valves, a vertically disposed crankshaft and a horizontally disposed cylinder, wherein a carburettor (62) is fixed on one side of the cylinder and an exhaust muffler (65) is fixed on the other side of the cylinder, the configurations of a suction port (58) and an exhaust port (61) being improved, whereby the fluidity of air-fuel mixture in the engine, the cooling effect of cooling air, and maintenance are enhanced.The suction port (58), coupled to the carburettor, has a horizontal straight portion (59) and a curved portion (60) leading to a suction valve (52). The central axis (59a) of the horizontal straight portion (59) and the central axis (62a) of the carburettor (62) are aligned substantially on the same straight line in the same horizontal plane, said curved portion (60) leading smoothly from the end of said horizontal straight portion (59) up to said suction valve (52).
Patent CA-2032595-A1 (CA)
Title: Cardiotomy reservoir
Inventor: SCHICKLING DAVID
IPC: A61M1/36
Filed: 1990-12-18
Abstract: CARDIOTOMY RESERVOIR            Abstract of the Disclosure A cardiotomy reservoir which employs an inner wall structure which defines a central receiving chamber. The receiving chamber wall is tapered inwardly to provide a smooth blood flow along an arcuate imperforate portion which extends from the top to the bottom thereof into the blood receiving chamber.  Apertures in another arcuate portion of the wall member allow fluid communication between the receiving chamber and the blood treatment element.    Blood  flow directing means  direct blood entering the inlet port of the device downward toward the bottom of the receiving chamber along the imperforate portion of the inner wall so that the inflowing blood does not splash and has low turbulence.     Express Mail Label No._
Patent CA-2033272-A1 (CA)
Title: Actuating device for drive switch of front-loading type vcr
Inventor: OH TAEK S
IPC: G11B15/10
Filed: 1990-12-27
Abstract: An actuating device for a drive switch for use in a front-loading type video cassette tape recorder which comprises a worm, a wheel gear having a connecting gear, a drive gear, a cam portion having slant surfaces formed on one side surface of the drive gear, and a tact switch including a contact protrusion which contacts to the cam portion of the drive gear, whereby the tact switch is actuated by the rotation of the drive gear.
Patent CA-2033438-A1 (CA)
Title: Metal filler composition and method of employing same
IPC: C23C4/06
Filed: 1990-12-31
Abstract: ABSTRACT           Metal filler  compositions and methods  of employing  the  same  are  disclosed,   in  which  the compositions  are  copper  base  with  the  addition thereto of tin and silicon.    For thermal spraying applications,   aluminum is  included in  the  formu-lation.   By practice of the invention,  substantial improvements  in  bond strength  and quality of  the surface finish are achieved.
Patent CA-2034368-A1 (CA)
Title: Lime-free preformed shapes for casting aluminum
Inventor: MCCOLLUM J MICHAEL
IPC: C04B35/14
Filed: 1991-01-17
Abstract: LIME-FREE PREFORMED SHAPES    FOR CASTING ALUMINUM ABSTRACT OF THE DISCLOSURE     Preformed silica shapes such as pins and spouts useful in the casting of molten aluminum are provided by which a high strength chemical bond is developed by adding 2 to 10 wt. % of an alkali phosphate-modified alumino-silicate binder to a fused silica mix.  To this silica and binder mix, sufficient water is added to obtain a castable consistency. Then, a shape is cast, dried, and shipped for service.
Patent CA-2035967-A1 (CA)
Title: Oxetanones
Inventor: DERUNGS ROMANO
IPC: A61K31/40
Filed: 1991-02-07
Abstract: Novel pancreas lipase-inhibiting oxetanones of the formula (see formula I) wherein Q, R1 and R2 have the significance given in the description, are manufactured starting from corresponding .beta.-hydroxycarboxylic acids.
Patent CA-2036825-A1 (CA)
Title: Switch assembly
Inventor: DEMEO GREGORY B
IPC: H01H13/702
Filed: 1991-02-26
Abstract: ABSTRACT            A switch assembly comprising a housing, an operating member mounted for movement relative to the housing and accessible to an operator, electrical contact means operable by movement of the operating member from a rest position to an operative position relative to the housing, flexible seal means between the operating member and the electrical contact means and capable of transmitting operative movement of the operating member to said contact means while preventing passage of moisture and other contaminants from the region of the operating member to the contact means, and, limit means preventing movement of the operating member relative to the contact means beyond the position at which the contact means is operated.  The switch can include further operating members and associated contacts and limit means carried by the housing and if desired the assembly can incorporate a heater for heating the operating member region of the assembly.
Patent CA-2038957-A1 (CA)
Title: Security post
Inventor: HIGGINSON BARRY
IPC: E04H12/34
Filed: 1991-03-25
Abstract: A security post to be located within an entry to control vehicular access and comprising a tubular member (10) installed below ground with its upper end generally level with the surface, and having a hinged lid (14).  A post (17) is slidable vertically within the tubular member (10) and is lockable by means of a key operated lockable handle (18, 19) which rotates to locate a locking bar in one of two vertically spaced slots (15, 16) to lock the post in a lowered or raised position whereby the post may be stowed away below ground when not required.
Patent CA-2040376-A1 (CA)
Inventor: LAMBERIGTS MARCEL
IPC: B32B15/01
Filed: 1991-04-12
Abstract: The steel strip is passed through a zinc bath with an aluminium content of approximately 55% by weight and a silicon content of 1% to 2% by weight, to which is added strontium in a quantity equal to 0.2% maximum by weight and at least one other element selected from among vanadium and chromium, each in a quantity equal to 0.2% maximum by weight. The addition of strontium and chromium and/or vanadium stabilises the structure of the coating and reduces the formation of acicular precipitates of silicon. The coating has an improved adherence and ductility which permits it to be formed without cracking, while retaining an excellent resistance to corrosion. The resulting crystallisation pattern of the coating is also finer and more regular and is independent of the substrate.
Patent CA-2041196-A1 (CA)
Title: Method for manufacturing a sack or bag with a bottom being rectangular in the filled state and a handle portion joined thereto
Inventor: ACHELPOHL FRITZ
IPC: B31B150/00
Filed: 1991-04-25
Abstract: ABSTRACT OF THE DISCLOSURE     The invention refers to a method for manufacturing a sack or bag with a bottom being rectangular in the filled state and a handle portion joined thereto. In order to provide an economical method of the above-mentioned kind for the production by machine, ac-cording to the invention the following steps are carried out sub-sequently. At first a tube piece (10) is provided at one end the-reof with two slits being substantially in parallel to each other and to the lateral fold edges. Then the bottom is mounted thereon, thereby forming the corner tucks (14) and the side tucks (16, 18). Furthermore, handle portion sheets (22), being produced in separate method steps and comprising a reinforcing portion (24) and a portion (26) forming a reinforcing strip in the glued state, is preferably glued or welded such that at a side tuck (16) an edge portion (20) is not covered by the prefab-ricated handle portion. Subsequently, a side tuck (16) and the corner tucks (14) are folded at a fold line (28) extending through the tops of the corner tucks (14) and the glueing or welding is carried out over an area through the edge zone (30) of the side tuck (16) and, if required, of the handle portion sheet (22) being put on.            (Fig. 5)
Patent CA-2041306-A1 (CA)
Title: Foldable rocking chair
Inventor: BOULET GILLES
IPC: A47C3/02
Filed: 1991-04-26
Abstract: ABSTRACT OF THE DISCLOSURE:            A  foldable  rocking chair  of  the  type  comprising  in combination:   a base provided with a pair of parallel riding  surfaces  spaced  apart  from  each  other  and connected together, each riding surface being ondulated; a back provided with a pair of stiles, a lower portion of each stile defining a short rear leg; a seat; a pair of main rear legs, each leg having an upper portion, an intermediate portion and a lower portion provided with rolling  means;  a  pair  of  front members,  each member having  a  upper  portion  defining  a  stem  and  a  lower portion provided with rolling means;  a pair of arms; a pair  of  connecting members;  six  pairs  of  connectors. Each  connector defines means  for pivotally  connecting parts   together   and   defining   a     pivoting   axis substantially  horizontal  and  perpendicular  with  the longitudinal axis of riding surfaces.  Aforesaid stiles, arms, front members, legs, seat and  connecting members are  movable  around   their  corresponding  connectors between a folded position and a unfolded position.
Patent CA-2041706-A1 (CA)
Title: Monolithic integrated optical amplifier and photodetector
Inventor: KOREN UZIEL
IPC: G02B6/122
Filed: 1991-05-02
Abstract: An optical amplifier and photodetector are monolithically integrated, with the photodetector being optically coupled to the optical amplifier through a low radiative loss and low back reflectivity branching waveguide. Because of the low reflectivity, the branching waveguide, although having a truncated wedge tip, is able to redirect a small portion of optical radiation from the amplifier to the photodetector without deleteriously effecting the performance of the optical amplifier. The branching waveguide is realized by employing between the branches of the waveguide, a junction region having a gradual decrease in effective refractive index such as to decrease the difference between the refractive indices at the optical interface of the truncated wedge tip as seen by optical radiation incident thereto from the optical amplifier.
Patent CA-2041894-A1 (CA)
Inventor: SOCHA ROBERT P
IPC: C08J5/12
Filed: 1991-05-06
Abstract: ABSTRACT OF THE DISCLOSURE          A laminate having high strength and excellent resistance to moisture comprised of a fiberglass reinforced polyester panel adhesively attached with a water reactive adhesive to a tempered hardboard panel.
Patent CA-2041941-A1 (CA)
Title: Arithmetic technique for variable resolution printing in a ros
Inventor: CURRY DOUGLAS N
IPC: H04N1/04
Filed: 1991-05-07
Abstract: In a raster output scanner, a method of switching video from one raster to the next during a scan without the creation of a visible artifact. A position encoder is used to determine the position of each raster on the photoreceptor, a first distance above the transition point and a second distance below the transition point, in the process direction. Above the first point the video will  be supplied by the first raster, and below the second point the video will be supplied by the second raster. From the first point to the transition point the duty cycle will vary from 100 % of data from the first raster to 50% from each raster. From the transition point to the second point the duty cycle will vary from 50% to 100 % supplied by the second raster. In this way, there is a gradual, and invisible, transition from one raster to the next.
Patent CA-2048043-A1 (CA)
Title: Inhibitory agent of an increase in blood sugar level
Inventor: KENSHO ITUO
IPC: A61K31/70
Filed: 1991-07-29
Abstract: ABSTRACT There is provided an inhibitory agent of an increase in blood sugar level, comprising conduritol A of the formula(I):       (I) or a derivative thereof, as an active component.
Patent CA-2048901-A1 (CA)
Inventor: WEYER PAUL P
IPC: F15B9/14
Filed: 1991-08-09
Abstract: A fluid-powered servo actuator having a body,  an annular piston, and a shaft extending co-axially therewithin. The shaft has an interior chamber located within the body with two fluid channels  extending to the chamber in which the piston is mounted.  One channel communicates with each side of the piston.  A valve spool is positioned in the shaft chamber, and a cam follower or threads are used to longitudinally move the  valve  spool  therewithin  in  response  to  its  selected rotation.   The valve spool has a pair of valve lands which, when in a neutral position, close the two channels.  When the valve  spool  is moved  longitudinally,  pressurized  fluid  is communicated with one or the other of the channels to cause the piston to move longitudinally.  Splines or rollers convert the  longitudinal  movement  of  the  piston  into  rotational movement of the shaft.  The cam follower or threads cause the resulting rotational movement of the shaft to move the valve spool back to the neutral position when the shaft has rotated by an amount and in a direction corresponding to the selected amount and direction the valve spool was rotated.
Patent CA-2049057-A1 (CA)
Title: Apparatus and method for stabilizing sludge
Inventor: KROFTA MILOS
IPC: C02F3/26
Filed: 1990-03-08
Abstract: Abstract of the Disclosure An apparatus and method for stabilizing sludge such as the sludge produced by municipal waste water treatment plants includes thickening of the sludge to a dry solid content in the range of 3% to 8% before feeding it to at least one comparatively small reactor tank that extends horizontally and has an inlet and outlet adjacent opposite end walls.  The system preferably utilizes multiple tanks stacked one above the other and connected in series.  The tanks have an in-built mixer that sweeps through the interior of the tank.  The mixer is eccentrically mounted so that its mixing members carry the sludge through the uppermost portion of the tank interior and are spaced from the bottom surface of the tank. A sparger is located either in the inlet or in the bottom clearance of the tank to introduce microscopic bubbles of oxygen and ozone into the sludge.  A pressure regulating valve controls the flow of the stabilize sludge from the uppermost reactor tank. The pressure regulating valve and the metering pump together maintain a hyperbaric pressure within the tanks.   3197m
Patent CA-2049811-A1 (CA)
Title: Stabilized solid chemical compositions
Inventor: DE HAAN PIETER
IPC: A61K31/55
Filed: 1991-08-23
Abstract: Disclosed are stabilized dry chemical (e.g. pharma-ceutical) compositions containing the water soluble acid addition salt of a poorly soluble basic compound (e.g. mianserin, apomorphine, chlorpromazine, imipramine, or promethazine); an excipient selected from the group con-sisting of microcrystalline cellulose, lactose, calcium hydrogen phosphate, and mixtures thereof; and a water soluble (> 2mg/ml) alkaline stabilizer. The dry composi-tion is relatively more stable than one not containing the water soluble alkaline stabilizer, especially after a high temperature granulation process. The process for preparing the dry composition is also more "rugged" with the added water soluble alkaline stabilizer.
Patent CA-2050774-A1 (CA)
Title: Starch mixtures as pudding starches
Inventor: STUTE ROLF
IPC: A23L29/20
Filed: 1991-09-06
Abstract: Abstract The invention relates to the use of a mixture of pea starch and corn starch in a ratio of 9:1 to 1:9 as a gelling and texturing agent for foodstuffs as well as for foodstuffs subjected to heating, consisting of a mixture of pea starch, preferably smooth pea starch, and corn starch in a ratio of 9:1 to 1:9, preferably 9:1 to 3:7 and in particular 8:2 to 4:6.     C:\BTDD\13
Patent CA-2051620-A1 (CA)
Inventor: EDWARDS RAY
IPC: C09D123/06
Filed: 1990-06-14
Abstract: Novel polyethylene compositions comprising a blend of a polyethylene component having defined properties and a specific quantity of defined tackifying resins are disclosed. In addition, process for extrusion coating at high speeds and relatively low extrusion coating temperatures employing invention compositions is disclosed.