baber/WOPTO huggingface dataset:
Patent CA-1294398-C (CA)
Title: Process for producing self-restoring overcurrent protective device by grafting method
Inventor: OKITA KUMAKAZU
IPC: C08F292/00
Filed: 1988-07-22
Granted: 1992-01-21
Abstract: PROCESS FOR PRODUCING SELF-RESTORING OVER-CURRENT PROTECTIVE DEVICE BY GRAFTING METHOD       ABSTRACT OF THE DISCLOSURE      A process for producing a self-restoring over-current protective device by the grafting method, wherein an organic peroxide is added to colloidal graphite, at least one kind of carbon black selected from among acetylene black, Ketjen black and furnace black having a high structure, and at least one kind of crystalline polyner substance while heating and milling the latter three components, and the heated mixture having a high viscosity is forcibly milled, whereby the organic peroxide is reacted with the polymer substance to give unpaired electrons to the polymer substance to thereby form polymer radicals.         Subsequently, the formed polymer radicals are preferentially grafted onto the above-mentioned graphite and carbon black to form a milled mass wherein the grafting products are homogeneously dispersed in the above-mentioned polymer substance.         The milled mass is molded into a predetermined shape while it still retains thermoplasticity.  Subsequently, the above-mentioned organic peroxide not involved in the formation of the above-mentioned polymer radicals is thermally decomposed to crosslink the above-mentioned grafting products and polymer substance, whereby a molding having a three-dimensional network structure is obtained.
Patent CA-1293317-C (CA)
Title: Liquid crystal electro-optical device
Inventor: YAMAZAKI SHUNPEI
IPC: G02F1/137
Filed: 1988-09-15
Granted: 1991-12-17
Abstract: ABSTRACT OF THE DISCLOSURE         A liquid crystal display comprises a pair of substrates provided with an electrode arrangement in matrix form.  A chiral smectic C phase liquid crystal material is interposed between the substrates.  In the liquid crystal layer, each pixel consists of a number of micro-domains which can be compared to polycrystal line structures.  Interaction between adjacent pixels through well ordered liquid crystal structure is suppressed by virtue of the micro-domains.
Patent CA-1311286-C (CA)
Title: Digital key telephone system
Inventor: ROBERTSON DAVID J
IPC: H04M9/00
Filed: 1988-10-26
Granted: 1992-12-08
Abstract: ABSTRACT OF THE DISCLOSURE         A key telephone system includes a plurality of ports being linked by port associated bidirectional communication channels which are synchronously switched by transferring bit states between ones of the channels to provide communication paths between the ports as directed by a central processor.  The ports are also linkable to and via the central processor by port associated message channels.          An interface circuit is responsive to the central processor and message channel signals for regulating flow of messages received by the central processor and for effecting single and plural channel distribution of messages from the central processor.  The message channels permit telephony operating features and functions to be provided either within the central processor or by appropriate apparatus means being connected at any of the ports.     - i -
Patent CA-1306329-C (CA)
Inventor: BAGLEY RODNEY D
IPC: B22F7/06
Filed: 1988-10-27
Granted: 1992-08-18
Abstract: METHOD OF ENCASING A STRUCTURE IN METAL                 Abstract of the Invention An improved method for encasing objects in metal is disclosed as are the novel encased objects so prepared. An object is wrapped with a sheet comprising sinterable particulate or powdered metal and an organic binder, and is then fired to volatilize the binder and to sinter the particulate metal into a unitary metal structure.  In the preferred embodiment of this invention, the object to be encased is a green sinterable particulate object which undergoes sintering simultaneously with the particulate metal casing during the firing step.
Patent CA-1325641-C (CA)
Title: Process for making glyphosate from n-phosphonomethyl- 2-oxazolidone
Inventor: FIELDS DONALD L JR
IPC: C07F9/38
Filed: 1988-11-02
Granted: 1993-12-28
Abstract: ABSTRACT         The present invention relates to a process for the production of N-phosphonomethylglycine which comprises reacting  an  aqueous  solution  of  N-phosphonomethyl-2-oxazolidone  so  as  to  bring  about  hydrolysis  of  the oxazolidone group and formation of carbon dioxide.   The reaction  is  continued  till  the  oxazolidone  has  been converted to N-phosphonomethylethanolamine or the cyclic internal ester thereof and the carbon dioxide co-product is removed.  Thereafter, the hydrolyzate is oxidized by adding a greater than one molar excess, after neutralization of acid groups in the phosphonomethyl group, of an aqueous alkali and a catalyst selected from cadmium, copper, zinc, palladium and platinum and their respective salts, oxides and hydroxides.  Heating at a temperature of from 200 to 300°C is carried out and the reaction mixture is acidified to generate N-phosphonomethylglycine.
Patent CA-1334561-C (CA)
Inventor: FISCHBEIN MILTON
IPC: C01C1/242
Filed: 1988-11-28
Granted: 1995-02-28
Abstract: A method for producing ammonium sulfate granules of exceptional size, hardness, and uniformity, which moreover are free-flowing and non-caking. The method may include producing the granules to have a pH within a specified range,  using a granulating aid, and cooling the granules after drying and screening but prior to storage.  Ammonium sulfate granules, of exceptional size and hardness, having a pH within a specified range, which are free-flowing and non-caking.
Patent CA-1302995-C (CA)
Title: Air circulation system for thermostatic chamber
Inventor: KAWAMURA HIDEO
IPC: B60H1/00
Filed: 1988-12-23
Granted: 1992-06-09
Abstract: ABSTRACT OF THE DISCLOSURE      In the air circulation system for thermostatic chamber, a plurality of circulation ports are provided in the thermostatic chamber near the door and an intake port is formed in the wall of the chamber opposite the door.          A plurality of air shutters installed in air ducts are controlled to be opened and closed in response to the opening and closing of the door.  Control of various components of the system is performed as follows.  When the door is open, hot air is blown out from the circulation ports on one side of the chamber and then drawn into the circulation ports on the other side, thus forming a powerful air curtain at the door portion of the chamber.  When the door is closed, the hot air is blown out from the circulation ports on both sides of the chamber into the thermostatic chamber and then drawn into the intake port.  In this way the hot air is circulated to keep the interior of the chamber warm.  Furthermore, when the door is open, the amount of fuel and combustion air supplied to the burner is increased to operate the burner at the maximum capacity, and at the same time the hot air circulation blower is powered up to deliver the maximum amount of hot air.
Patent CA-1291923-C (CA)
Title: Hydraulic power system
Inventor: WACHOWICZ STANLEY W
IPC: E21B34/16
Filed: 1989-01-16
Granted: 1991-11-12
Abstract: Abstract A hydraulic system and method are provided for supplying high pressure hydraulic fluid to a cylinder for operating a ram, e.g a shearing and/or shut-off ram for a blowout preventer.  It comprises means for supplying high pressure hydraulic fluid to the cylinder, said hydraulic fluid supply means comprising first and second storage means for storing hydraulic fluid under pressure, first conduit means for supplying hydraulic fluid under pressure from said first storage means to the cylinder, a pressure sensing device for determining the back pressure in said first conduit means, second conduit means for supplying hydraulic fluid under pressure from said second storage means to the cylinder and valve means for automatically opening said second conduit means when the back pressure in the first conduit means reaches a predetermined amount.
Patent CA-1306471-C (CA)
Title: Load transmitting device for electromechanical measurement transducers
Inventor: SOEDERHOLM ARNE
IPC: G01G21/23
Filed: 1989-01-18
Granted: 1992-08-18
Abstract: ABSTRACT OF THE DISCLOSURE    Load transmitting means for electromechanical measurement of forces and weighing comprising a load measuring body permitting horizontal and angular changes of a load carrier supported by devices according to the invention.  At each end of the measuring body having plane ends thee is a transmitting unit in the form of a cylindrical body with its longitudinal axis parallel to the end plane of the measuring body and with cylinder surfaces facing the measuring body and having single-curved, circular forms.  The longitudinal axes of the cylindrical bodies - oscillation pieces - are turned at an angle of 90° relatively close to one another so that they transmit movements in the plane parallel to the end plane of the measuring body in each their direction parallel to their longitudinal axis and support at the same time the measuring body transversely of their longitudinal axis.  In this way the load measuring body can move merely parallel to its longitudinal axis, i.e. in parallel with the direction of the measuring load. Guide means for the oscillation pieces belong to the device so that they cannot slide over the surfaces as well as split washers with a central hole.  The washers can be turned aside in their plane, and in this way it is possible to take out the measuring body and the oscillation pieces from the transmitting device even after they have been mounted below a load carrier.
Patent CA-1307063-C (CA)
Title: Anonymous interactive telephone system with expanded outward calling features
Inventor: SOLOMON MERRILL
IPC: H04Q3/62
Filed: 1989-02-13
Granted: 1992-09-01
Abstract: ABSTRACT OF THE DISCLOSURE         Disclosed is a method and apparatus for establishing anonymous telephone communications between service subscribers and responding callers over public telephone lines controlled by a public telephone company central switching office having the capability of interlinking select public telephone lines.          Communications between the subscribers and responding callers can be performed with complete confidentiality an mutual anonymity.          Incoming calls from callers are transferred by a system controller and an additional subsystem to a message recording facility or directly to the desired subscriber.  When a call is transferred directly to a subscriber, the static connection is made and maintained by the public telephone company's central switching office, and the system controller is disconnected from both caller and subscriber.
Patent CA-1320971-C (CA)
Inventor: WOERNER PIERRE
IPC: F16F9/36
Filed: 1989-03-06
Granted: 1993-08-03
Abstract: L'amortisseur selon l'invention comporte un caisson dans lequel est montée une tige coulissante le caisson et la tige coulissante déterminant entre eux une chambre annulaire . Selon l'invention l'amortisseur comporte au moins un palier support entre le caisson et la tige coulissante au voisinage de l'ouverture du caisson et un palier d'étanchéité espacé du palier support et disposé à un niveau correspondant à une partie haute de la tige coulissante pour une position détendue de l'amortisseur, le palier d'étanchéité ayant par ailleurs un côté en contact avec la chambre annulaire et supportant au moins deux joints d'étanchéité séparés par une gorge reliée à la chambre annulaire par un canal d'équilibrage pouvant être obturé par un robinet .
Patent CA-1337620-C (CA)
Title: Polyetherketoneimides
Inventor: WHITELEY RICHARD
IPC: C08G73/10
Filed: 1989-04-18
Granted: 1995-11-21
Abstract: Polyetherketoneimides and copolymers thereof having an imide repeat unit of formula   wherein Ri is   or   in which A is a direct bond or -O- or another substantially non-electron-withdrawing group, and/or Ra is an at least partly arylene moiety other than m- or p-phenylene.   These polymers tend to have improved melt stability and other properties, especially when made from a pre-existing imide monomer, instead of by the known amic acid route which results in uncyclised amic acid residues in the polymer.
Patent CA-1331790-C (CA)
Inventor: BENNETT CHRISTOPHER J
IPC: H04N7/167
Filed: 1989-05-05
Granted: 1994-08-30
Abstract: REPRODUCTION OF SECURE KEYS BY USING DISTRIBUTED KEY GENERATION DATA ABSTRACT OF THE DISCLOSURE A key security system provides for the reproduction of secure keys by using distributed key generation data and a distributed encrypted prekey. The system encrypts program key generation data with a program key prekey in accordance with a first encryption algorithm to produce the program key; processes the program key to produce a keystream; and processes an information signal with the keystream to produce a scrambled information signal. The programkey prekey is encrypted with a category key in accordance with a second encryption algorithm to produce an encrypted program key prekey. The scrambled information signal the program key generation data and the encrypted program key prekey are distributed to descramblers. The descrambler within the key security system decrypts the distributed encrypted program key prekey with the category key in accordance with the second encryption algorithm to reproduce theprogram key prekey encrypts the distributed program key generation data with thereproduced program key prekey in accordance with the first encryption algorithm to reproduce the program key; processes the reproduced program key to reproduce the keystream; and processes the distributed scrambled information signal with the reproduced keystream to descramble the distributed scrambled information signal. The key generation data includes authorization data that must be processed by the authorization processor in the descrambler in order to enable the descrambler. The use of authorization data as key generation data protects the authorization data from spoofing attacks. When more data must be protected than a single operation of the encryption algorithm can support then additional data blocks are protected by chaining the system wherein the output from one stage forms part of the input to the next. The key generation data for the program key includes a sequence number securely associated with the category key to thereby "timelock" program key reproduction to the use of a current category key and thus prevent an attack based upon the use of an obsolete category key
Patent CA-1338051-C (CA)
Title: Method of electrolytic metal coating of a strip-shape metal substrate and apparatus for carrying out the method
Inventor: JANSSEN LEONARD JOHANNES JOSEP
IPC: C25D17/10
Filed: 1989-06-09
Granted: 1996-02-13
Abstract: In the electrolytic metal coating of a strip-shape metal substrate, the substrate is passed in a continuous process as cathode through an electrolytic coating apparatus having an insoluble anode, the cathode and anode being connected to an external voltage source so that metal ions are deposited onto the substrate from an acidic electrolyte between the cathode and anode.  To increase the anode service life and reduce power consumption, a hydrogen-providing gas, e.g. molecular hydrogen, is fed to the anode and a catalyst is available at the anode, so that under the influence of the catalyst electrons and hydrogen ions are formed from said hydrogen-providing gas, the hydrogen ions passing into the electrolyte.
Patent CA-1339543-C (CA)
Title: Multilayered film
Inventor: MURPHY MARK
IPC: B32B27/32
Filed: 1989-06-29
Granted: 1997-11-18
Abstract: The multilayered film has a base layer (A) and at least one surface layer (B).                  The film-forming component of base layer (A) is at least one copolymer of A1) ethylene and A2) an ethylenically unsaturated carboxylic acid or an ionomer thereof. The film- forming component of base layer (B) is an ethylene homopolymer or a copolymer of ethylene and at least one alpha-olefin having from 3 to 12 carbon atoms, or a blend of said polymers. The weight of the base layer (A) is from 25 to 75 percent by the total weight of (A) and (B).             The multilayered film is useful for wrapping food.
Patent CA-1301178-C (CA)
Title: Process for the formation of 6-desmethyl-6-exo-methylene derivatives of lovastatin and analogs thereof
Inventor: THOMPSON ANDREW S
IPC: C07D309/30
Filed: 1989-06-29
Granted: 1992-05-19
Abstract: TITLE OF THE INVENTION   METHYLENE DERIVATIVES OF LOVASTATIN AND ANALOGS THEREOF.            ABSTRACT OF THE INVENTION         A process and intermediates in preparation of 6-exomethylene derivatives of lovastatin and 8-acyl and di- and tetrahydro analogs thereof is disclosed.
Patent CA-1340176-C (CA)
Title: Polyimide and polyimide film an manufacturing method thereof
Inventor: NAGANA HIROSAKU
IPC: H05K1/03
Filed: 1989-07-10
Granted: 1998-12-08
Abstract: The present invention provides an improved grade of polyimide containing an organic phosphorus compound, a film composed thereof and a method of making the aforementioned film.  According to the present invention, it is possible to obtain a polyimide film improved in mechanical strength.
Patent CA-1328110-C (CA)
Title: Preparation of nitratoalkyl-substituted cyclic ethers
Inventor: PAUL NORMAN C
IPC: C07D303/16
Filed: 1989-07-21
Granted: 1994-03-29
Abstract: Abstract Preparation of Nitratoalkyl-substituted cyclic ethers A continuous process for producing nitratoalkyl-substituted cyclic ethers which consists of (a) cocurrently mixing a stream of N2O5 and a stream of an hydroxyalkyl-substituted cyclic ether each dissolved in an inert organic solvent, followed by (b) rapidly separating the nitric acid and nitratoalkyl coproducts before they can  react  together  to  rupture  the  ether  ring.  Step  (b)  is conveniently  performed  by  quenching  the  product  stream within approximately  15 seconds  of  its  formation,  in a basic aqueous solution into which the nitric acid is transferred from the organic phase and is neutralised.        Examples of products which may be prepared by this process are nitratoalkyl-substituted oxiranes and oxetanes.
Patent CA-1306726-C (CA)
Title: Blood collection needle disposal system
Inventor: BENNETT MICHAEL C
IPC: A61M5/00
Filed: 1989-08-16
Granted: 1992-08-25
Abstract: BLOOD COLLECTION NEEDLE DISPOSAL SYSTEM               Abstract of the Disclosure A  closure  is  provided  comprised  of  a  thin flexible  material  for  use  on  a  needle  disposal container  so  that  a  contaminated  blood collection needle may be removed from its holder and deposited in  the  container  without  the  user  touching  the needle or the needle hub.  The device includes dual elongated  tapered  openings  to  accommodate  varying diameters of needle hubs.  By having dual openings, the  useful  life  of  the  cap  and  its  associated container is doubled.   The cap of the invention is configured to be utilized with a  large variety of collection containers of  varying  sizes and shapes.          A  feature  of  the  invention  includes  chamfered surfaces at  the  enlarged  end  of  each of  the dual openings to provide a sharp edge which is useful for urging  a  needle  hub  out  of  its  holder,  without physically touching the needle or hub.
Patent CA-1317305-C (CA)
Inventor: JACKSON ROY J
IPC: C07C261/02
Filed: 1989-09-28
Granted: 1993-05-04
Abstract: A B S T R A C T          ALPHA, ALPHA', ALPHA"-TRIS(4-CYANATOPHENYL)-1,3,5-TRIISOPROPYLBENZENES AND RESINS THEREOF      Alpha, alpha', alpha"-tris(4-cyanatophenyl)-1,3,5-triisopro-pylbenzenes are new and useful for preparing high heat resistant resins having a low dielectric constant, particularly for electri-cal applications.
Patent CA-1322177-C (CA)
Inventor: KALNINS CHARLES M
IPC: B04C9/00
Filed: 1989-09-29
Granted: 1993-09-14
Abstract: LIQUID SEPARATOR                            ABSTRACT             Liquid Separator including a liquid-liquid hydrocyclone (10) and a method for enhancing the operation of the liquid-liquid hydrocyclone in which the mixture to be separated is first passes through a mixing and/or residence vessel (90), such as a cross plate interceptor skimmer.
Patent CA-1331531-C (CA)
Inventor: FUJIWARA HARUYOSHI
IPC: D21F9/00
Filed: 1989-09-28
Granted: 1994-08-23
Abstract: ABSTRACT OF THE DISCLOSURE:      A forming apparatus is disclosed for forming a web from stock.  The apparatus includes in a headbox for ejecting a jet of the stock.  A first and a second moving wire cooperate together to define therebetween a forming section having a first and a second end.  The first end of the forming section is disposed closely adjacent to the headbox.   A first plurality of shoes cooperate with the first wire such that water  drains from the stock through the first wire and through a first plurality of channels defined by the first plurality of shoes.  A second plurality of shoes cooperate with the second wire such that water drains from the stock through the second wire and through a plurality of slots defined by the second plurality of shoes.  The first and the second plurality of shoes are staggered relative to each other for enhancing the dispersion of fibers within the stock during formation of the web.
Patent CA-1307564-C (CA)
Inventor: GILLILAND MALCOLM T
IPC: G05F1/20
Filed: 1991-01-29
Granted: 1992-09-15
Abstract: DISTRIBUTED STATION WELDING SYSTEM     Abstract of the Invention An  improved welding system is shown.  A single high capacity power supply (10) provides operating power for several weld selector stations (16).  Each weld selector station (16) operates independently, is adjustable, and allows a welder to obtain the voltage and current characteristics desired for his particular welding operation.  Each weld selector station (16) operates over a wide range of input voltages so that long runs of low-voltage interconnecting cable (14,15) can be used without adversely affecting the quality of the weld.     Furthermore, the weld selector station (16) is small, lightweight and easily transportable.  The result is a more efficient, less expensive, versatile welding system.
Patent DK-165721-C (DK)
Inventor: KLIEM HELMUT
IPC: H04J3/07
Filed: 1986-07-14
Granted: 1993-05-24
Abstract: A method and apparatus are described for adjusting clock pulses of time-equidistant digital line scanning values of a moving-image signal present in a composite color video signal to a clock used in a digital transmission link by means of a moving-image coder. In the transmitting part (10) of the moving-image coder, self-identifying stuffing characters are inserted into the string of image scanning values if clock deviations are found. The identification may be carried out by means of an additional bit or, alternatively, by a special code word when this is first removed from the supply of image scanning values. In the receiving part (30) of the moving-image coder, the stuffing character is recognized and removed and the original character string is restored.
Patent DK-161728-C (DK)
Inventor: KUETHER KLAUS H
IPC: A23K1/16
Filed: 1983-08-12
Granted: 1992-04-06
Abstract: 1. Particulate feed additive for ruminants on the basis of water-insoluble zinc complexes of one or more essential amino acids, characterized in that it consists of a mixture of the water-insoluble zinc complexes of one or more essential amino acids with a substantially rumen-proof matrix.
Patent FI-56354-C (FI)
Inventor: LAURIZIO JEREMIAH J
IPC: B65D8/02
Filed: 1974-06-14
Granted: 1980-01-10
Abstract: A closure flange molded of synthetic plastic material has an upstanding cylindrical neck with an internally threaded portion for reception of a closure plug. The lower portion of the cylindrical neck is surrounded by an annular collar constructed to facilitate bonding of the flange about a plastic container wall opening while the uppermost end of the cylindrical neck is formed to receive an overlying cap seal.