baber/WOPTO huggingface dataset:
Patent CA-2001881-A1 (CA)
Title: Hypochlorous acid process
Inventor: MELTON JAMES K
IPC: C01B11/04
Filed: 1989-10-31
Abstract: IMPROVED HYPOCHLOROUS ACID PROCESS               Abstract of the Disclosure A process for producing hypochlorous acid by reacting an aqueous solution of an alkali metal hydroxide in droplet form with gaseous chlorine to produce hypochlorous acid vapor and solid alkali metal chloride particles in which the improvement comprises employing molar ratios of gaseous chlorine to the alkali metal hydroxide of at least about 22:1.         The process achieves high yields of hypochlorous acid by minimizing side reactions including the formation of chlorate as an impurity in the alkali metal chloride particles produced.         The hypochlorous acid solution produced contains from about 35 to about 60 percent by weight of HOCl, a dissolved chlorine concentration of less than about 2 percent by weight, and is substantially free of alkali metal ions and chloride ions.
Patent CA-2002481-A1 (CA)
Inventor: IWATA HIROKIMI
IPC: G11B23/03
Filed: 1989-11-08
Abstract: A disk cartridge includes a main body of the cartridge having an opening or its major surface by which the signal recording surface of an aptical disk accommodated in the main body is exposed to outside and an aperture formed on the lateral surface orthogonal to the major surface of the main body for enabling the optical disk to be inserted into and taken out of the cartridge for disk exchange. The disk cartridge also an opening/closing member which is rotatably supported by the main body by pivot pins provided at its one end for engaging in recesses in the aperture in the main body, for opening and closing the aperture and, which is provided at its other end with a resilient arm having a retaining end pawl engageable with a mating retaining section in the main body. By actuation of the opening/closing member, the aperture in the main body is opened or closed to permit exchange of the optical disk.
Patent CA-2003782-A1 (CA)
Title: Conductive thermosetting resins
Inventor: BROKKEN-ZIJP JOSEPHINA C M
IPC: H01B1/24
Filed: 1989-11-24
Abstract: A B S T R A C T                 CONDUCTIVE THERMOSETTING RESINS      The invention relates to a curable composition comprising a thermosetting resin, from 0.02 to 1.7 %vol of carbon black, which is present in the composition as a homogeneous dispersion of particles substantially having a diameter of less than 10-6 m, and a curing agent, the latter having a surface tension at the curing temperature of at least 33 or at most 23 mN.m-1.    ML5.T0457FF
Patent CA-2005733-A1 (CA)
Title: Formulations
Inventor: BELL JOHN H
IPC: A61K31/35
Filed: 1989-12-15
Abstract: ABSTRACT      According to the present invention there is provided a pharmaceutical composition containing 0.1-10% sodium cromoglycate by weight of the total composition with trichloromonofluoromethane in combination with any proportion of dichlorodifluoromethane and dichlorotetrafluoromethane, wherein the total water content when expressed as a proportion of anhydrous sodium cromoglycate is 2 to 14% by weight. 14-Dec-89 P68010P.DOC
Patent CA-2005890-A1 (CA)
Inventor: OLIVER BRIAN H
IPC: B29L30/00
Filed: 1989-12-18
Abstract: A method of treating a rubber expandable tire cure bladder by forming a base release coat thereon followed by application of a lubricant topcoat.  The base release coat is derived by applying a composite of an hydroxyl terminated polyorganosiloxane and an aminoorganosilane to an expanded bladder and thereafter applying a lubricant topcoat derived from selected polyorganosiloxane components.  The invention is further directed to a bladder prepared thereby and to a method of curing tires therewith.
Patent CA-2006458-A1 (CA)
Title: Method for scrambling pal, secam and ntsc composite video signals and decoder for unscrambling said signals
Inventor: DANIEL PATRICK
IPC: H04N7/169
Filed: 1989-12-21
Abstract: PCT No. PCT/FR89/00637 Sec. 371 Date Jul. 30, 1991 Sec. 102(e) Date Jul. 30, 1991 PCT Filed Dec. 8, 1989 PCT Pub. No. WO90/07846 PCT Pub. Date Jul. 12, 1990.The method of the invention consists in shifting (a) the start of the scrambled section of a composite video line of a television image with respect to the start of the useful part of that line.
Patent CA-2006734-A1 (CA)
Inventor: IZAWA TOSHIO
IPC: C07D213/78
Filed: 1989-12-27
Abstract: Disclosed are novel carboximidamide derivatives represented by the following formula.                          (A) [wherein B is   (in which X or H or Cl),    ,   ,    ,          ,            ,           or H3C-S-, R''' is alkyl, nitroxyalkyl, optionally substituted phenyl, 2,6-dimethoxy-3-pyridyl or   (in which R2 is alkyl, aryl, nitroxyl, aralkoxy, hydroxyl or hydrogen, a is an integer of 1-3 and R3 is optionally substituted phenyl, phenylthio or thiophenyl) when B is            or R''' is phenylethyl or nitroethyl when B is one of the others].  These compounds are useful as pharmaceutical agents.  Also disclosed are N-cyano-pyridinecarboximidate compounds represented by the following formula (II)         (II) (wherein X is H or Cl and R' is alkyl) which are useful as intermediates for preparing of N-cyano-N'-substituted-pyridinecarboximidamide derivatives.
Patent CA-2008716-A1 (CA)
Title: Automatically controlled socket wrench
Inventor: KANG BYUNG KWAN
IPC: B25B13/06
Filed: 1990-01-26
Abstract: ABSTRACT OF THE DISCLOSURE      An automatically controlled socket wrench which comprises a body having handle, a rotating gear member including a pair of jaws which containing a screwing aperture disposed in a supporter extended therefrom and a worm gear member,  a controlling wire rope connected to the worm gear member and a button, a stopper for stopping the rotating gear, and a cover for covering the rotating gear assembled with the controlling wire rope and stopper therein whereby when the button is operated, the jaws are caused to open,  and after the socket wrench is manipulated around an object, by returning the button and suspending the stopper, the jaws of the socket wrench are automatically and strongly closed around the object.
Patent CA-2009398-A1 (CA)
Inventor: PAPAY ANDREW G
IPC: C10L1/22
Filed: 1990-02-06
Abstract: Preconditioned automatic transmission fluids are made by using a preblend formed by heating an alkenyl succinimide or succinamide dispersant with a phosphorus ester and water to partially hydrolyze the ester and then mixing the preblend and other additives with a base oil.
Patent CA-2010182-A1 (CA)
Title: Chemical additive for hydraulic cement mixes
Inventor: LANE DONALD R
IPC: C04B28/04
Filed: 1990-02-15
Abstract: CHEMICAL ADDITIVE FOR HYDRAULIC           CEMENT MIXES               ABSTRACT OF THE DISCLOSURE A  hydraulic  cement  mix comprising a hydraulic cement, aggregate  in an amount of up to 80% by weight based upon the total  weight  of said cement mix, sufficient water to effect hydraulic  setting of  the  cement,  and  an  air-entraining additive  consisting  essentially  of  a  coconut  fatty acid diethanolamine  produced  by  reacting alkyl ester of coconut acid  with  diethanolamine,  a  capramide  diethanolamide and ricinoleic acid,  said additive being in an effective amount whereby  air will be entrained in said mix in an amount of 3% to 9% by volume of said mix.
Patent CA-2010439-A1 (CA)
Title: Helmet mounted display having dual interchangeable optical eyepieces
Inventor: FOURNIER JOSEPH T JR
IPC: G02B13/14
Filed: 1990-02-20
Abstract: Abstract of the Disclosure A Helmet Mounted Display Having Dual Interchangeable Optical Eyepieces Helmet mounted display apparatus for use in aircraft and rotorcraft includes an image source for generating images that are projected into the pilot's forward field of view by a portion of relay optics that are common to both day and night viewing and interchangeable optical eyepiece, one for daytime viewing and one for nighttime viewing.
Patent CA-2014494-A1 (CA)
Inventor: ARTOLA UGARTE FELIPE
IPC: A63B51/00
Filed: 1990-04-12
Abstract: ABSTRACT            "RACKET STRINGING TENSION MEASURING DEVICE"        A device to measure the tension of the stringing of rackets used for playing tennis, squash, etc., which entails  an end area to  strike  the  said stringing and  another  adjacent  area  which includes a multiple diapason or  tuning device.  On striking the stringing, and depending on the  tension of the  strings,  one of the diapasons vibrates, thus providing a signal which can later be measured or digitalized to provide a measurement of the tension of the stringing.
Patent CA-2014938-A1 (CA)
Title: Optical amplifier-photodetector assemblage
Inventor: DUTTA NILOY K
IPC: H04B10/294
Filed: 1990-04-19
Abstract: Briefly, in the invention a photodetector and an optical amplifier are integrated in the same semiconductor chip. The optical amplifier and the photodetector are positioned side-by-side on the same chip. A portion of the electromagnetic energy carried in the evanescent tail of the optical mode is detected by the photodetector for monitoring the average output power of the optical amplifier. Current confinement and lateral index guiding can be provided by Fe or Ti doped semi-insulating layers of InP. The side-by-side arrangement enables thedetector to monitor the output power of the optical amplifier without degrading the output power of the optical amplifier.
Patent CA-2016586-A1 (CA)
Inventor: MARCONNET GUY
IPC: E01C19/10
Filed: 1990-05-11
Abstract: Société dite : ERMONT C.M. Procédé et dispositif de mesure de la teneur en liant bitumineux de matériaux enrobes produits dans une installation d'enrobage DU CONTENU TECHNIQUE DE L'INVENTION L'installation d'enrobage comporte un dispositif de malaxage (1) dans lequel des agrégats (4) en circulation continue sont mélangés avec un liant butumineux introduit en un point d'injection (7). On mesure le poids P d'une quantité de matériaux enrobes (8) définie, on mesure la quantité pondérale 8 de bitume mélangé aux agrégats (8) pour produire la quantité définie de poids P et on calcule le rapport B/(P - B) x 100 représentant la pourcentage pondéral de liant bitumineux. On détermine le temps de parcours T1 des matériaux entre le point d'injection (7) et l'entrée de la trémie de réception (12), on détermine le poids P par pesée directe de la trémie de chargement (11) à deux instants définis et on mesure le poids B de liant bitumineux mélangé aux agrégats (4) pendant le temps de constitution de la charge P, en tenant compte du temps de parcours T1 des matériaux (B). Figure 1.
Patent CA-2018068-A1 (CA)
IPC: H04Q11/04
Filed: 1990-06-01
Abstract: The subject distribution mechanism is used in a communication system comprising a plurality of interfaces,  (10,  11 and 12) with each interface connected to at least one user and able to receive and transmit information to said user(s) through information carrying means.  It  allows  communications  to be established between  users selected by a central control unit (7) in a programmable way. The distribution mechanism comprises:  in each interface, scheduling means responsive to a common timing signal having a period T, to divide the period into n slot periods having a slot number, n being the number of users connected to that interface to which the maximum number of users  are  connected,  a  configuration  table  (18)  comprising  n locations,  each  location assigned to a  slot period,  the central control  unit  writing  in  each  location  communication  control information, said table being addressed by the slot numbers generated by the scheduling means to read and make available, the communication control  information, distribution buffer means (20) comprising at least a first and a second part,  each part having n addressable locations, addressed by means of addressing means responsive to the communication control information provided by the configuration table during each slot period to cause each interface involved in the to be established communications during that slot period, to write the information to be transmitted in one part of the distribution buffer and the information to be received by the interface to be read from the other part of the distribution buffer at addresses derived from the communication control information and the slot number generated by the scheduling means.
Patent CA-2018131-A1 (CA)
Title: Process for preparing organosiloxanes
Inventor: STAIGER GERHARD
IPC: C07F7/08
Filed: 1990-06-01
Abstract: Organosiloxanes (1) of the general formula R14-nSi(OSiR3)n, in which R is the same or different and represents a hydrogen atom or a monovalent hydrocarbon radical having from 1 to 18 carbon atom(s) per radical or a substituted monovalent hydrocarbon radical having from 1 to 18 carbon atom(s) per radical, R1 represents R or a chlorine atom, and n is 3 or 4, are prepared by reacting organodisiloxanes (2) of the general formula (R3Si)2O, with chlorosilanes (3) of the general formula R4-nSiCln, in which R and n are the same as above, in the presence of phosphonitrile chlorides (4) and cocatalysts (5), in which the cocatalysts (5) are used concomitantly with the phosphonitrile chlorides (4) and are selected from the group consisting of amides of the general formula X-C(O)-R2, in which R2 is the same or different and represents a hydrogen atom or a monovalent hydrocarbon radical having from 1 to 8 carbon atom(s) per radical or a substituted monovalent hydrocarbon radical having from 1 to 8 carbon atom(s) per radical, and X reresents a radical of the formula R22N- or  <IMAGE>  where R2 is the same as above, R3 represents a divalent hydrocarbon radical having from 5 to 7 carbon atoms per radical, urea or urea derivatives of the general formula X-C(O)-X, where X is the same as above and cyanuric acid.
Patent CA-2018805-A1 (CA)
Title: Chimney cap unit for extinguishing a starting chimney fire
Inventor: KONING WIEBE
IPC: F16K17/38
Filed: 1990-06-12
Abstract: s ABSTRACT       Chimney cap unit for extinguishing a starting chimney fire, comprising a part which greatly restricts the draught during the fire in the flue, and a  part which regulates the outflow of the remaining flue gas stream through the normal flue, in such a way that after a chimney fire the throughflow aperture is partially restored, so that no counterflow, which could result in flue gases entering the living-room, can occur in the flue.
Patent CA-2019725-A1 (CA)
Inventor: SMYTH WILLIAM K
IPC: H04N9/09
Filed: 1990-06-25
Abstract: A system and method for calibrating signals provided by individual cells in a photodetector array scanned by light originating at a low-cost variable light source and reflected from a subject to be replicated in digital form by processing photodetector cell signals in a manner so that individual cell signals are corrected to compensate for fluctuations in source light. The system and method is particularly applicable to a color balanced photodetector array in which individual photodetectors are arranged in sets with each set having a variable number of rows oriented in a direction transverse to the direction of scan and columns parallel to the direction of scan. The invention is practiced by exposing the first few photodetectors in each row to the full spectrum of visible light reflected from a white reference patch. During processing, as the photodetector signals are sequentially transferred, to a processor, the signals provided by the cells exposed to the white reference are compared with a fixed value to obtain a calibration factor. As the signals develop by cells in the same set but as a result of exposure to light reflected from the subject image, those signals are multiplied by the calibration factor so that the process signals are corrected for variations in source light on a real time basis.
Patent CA-2021068-A1 (CA)
Inventor: LITMAN MARK A
IPC: G03C3/00
Filed: 1990-07-12
Abstract: An Improved Cassette and Radiographic Film Combination ABSTRACT OF DISCLOSURE      Cassette comprising a front element and a back ele-ment and a first intensifying fluorescent screen fixed, in the interior of said cassette, to said front element and a second intensifying fluorescent screen fixed, in the interior of said cassette, to said back element, to be used with a radiographic element situated between and in close contact with said screens.     Said first  intensifying screen comprises a first radiation emitting phosphor and said second intensifying screen comprises a second radiation emitting phosphor, and said first radiation emitted by said first intensify-ing screen are in a first wavelength region of the elec-tromagnetic spectrum and said second radiation emitted by said second intensifying screen are in a second wave-length region of the electromagnetic spectrum.     The  cassette  is  for  use  with  a  combination  of photosensitive elements  for radiography formed by the pair of intensifying screens and a double-side coated silver halide radiographic element. Each screen is ar-ranged adjacent to each silver halide layer, each screen is capable of imagewise emitting radiation to which the adjacent silver halide layer is sensitive when imagewise exposed to X radiation and each silver halide layer is substantially insensitive to the radiation emitted by the opposite screen.     The combination of the cassette and the radiographic element according to this invention is characterized by the fact that the cassette presents in its interior an asymmetrical system of at least one protuberance and the radiographic element presents an asymmetrical system of at least one hole or notch which corresponds to said asymmetrical system of at least one protuberance,  the correspondence between said asymmetrical systems being such that the radiographic element can fit and nest with-in the cassette only with said front screen directly fac-ing said front silver halide emulsion.
Patent CA-2024299-A1 (CA)
Inventor: KOT KENNETH M
IPC: D07B1/06
Filed: 1990-08-30
Abstract: Apparatus for stranding together high tensile steel filaments to produce metallic cords, including - a first member comprising a flyer (12) having an axis of rotation (A) and means (32) for rotating said flyer about said axis; - a second member comprising a first set of spools (57); - a non-rotating shuttle (16) suspended from said flyer (12) and comprising a second set of spools; - means for guiding the filaments furnished by said spools until they reach a forming die (90), said die having its drawing axis merged with the flyer axis (A); - means (93, 94) for guiding the filaments supplied by said second set of spools into said die (90) so that they are equiangularly spaced around the drawing axis and form with said drawing axis an angle - comprised between 35° and 60°.
Patent CA-2025955-A1 (CA)
Title: Pipe pusher
Inventor: MARTIN LUTHER W
IPC: B23P19/00
Filed: 1990-09-21
Abstract: ABSTRACT OF THE DISCLOSURE     A pipe pusher comprises a frame formed to define a passageway therethrough for receiving a length of pipe. Three sets of drive wheels are rotatably coupled to the frame for engaging the length of pipe and pushing the length of pipe through the passageway.  Each set of drive wheels is spaced apart axially along the passageway from the other two sets to engage the pipe at separate axial locations along the portion of the length of the pipe inside the passageway.  A mechanism is coupled to the three sets of drive wheels for rotating the drive wheels to push the length of pipe through the passageway.
Patent CA-2026238-A1 (CA)
Title: Process
Inventor: GEEN GRAHAM R
IPC: C07D473/18
Filed: 1990-09-26
Abstract: B2847/Abs Abstract A process for the preparation of a compound of formula (A):                   (A) wherein X is hydrogen, hydroxy, chloro, C1-6 alkoxy or phenyl C1-6 alkoxy and Ra and Rb are hydrogen, including acyl and phosphate derivatives thereof; which process comprises: i)   the preparation of a compound of formula (I):       ( I ) wherein R1 is C1-6 alkyl, or phenyl C1-6 alkyl in which the phenyl group is optionally substituted; R2 is hydrogen, hydroxy, chlorine, C1-6 alkoxy, phenyl C1-6 alkoxy or amino; and R3 is halogen, C1-6 alkylthio, - 2 -               32847/Abs C1-6 alkylsulphonyl, azido, an amino group or a protected amino group, which process comprises the reaction of a compound of formula (II):              (II) with a compound of formula (VII):                           (VII) wherein Q is a leaving group, J is hydrogen or halo and R1 is as hereinbefore defined; to give a compound of formula (VIII):                                        (VIII) followed by reduction of the compound of formula (VIII) to give a compound of formula (I) as hereinbefore defined; and, as necessary or desired, interconverting variables R1, R2 and R3 to further values of R1, R2 and R3;     - 3 -               B2847/Abs (ii) the conversion of the resulting compound of formula (I) to a compound of formula (A) by converting variable R3, when other than amino, to amino, reducing the ester groups CO2R1 to CH2OH and optionally forming acyl or phosphate derivatives thereof, and as necessary or desired converting variable R2 in the compound of formula (I) to variable X in the compound of formula (A).
Patent CA-2027110-A1 (CA)
Title: Lossless switch (llsw)
Inventor: MESZLENYI IVAN
IPC: H03K17/00
Filed: 1990-10-04
Abstract: ABSTRACT     The Lossless Switch (LLSW) consists of a first electronic switch, a second electronic switch, connected to the positive and negative supply rails respectively , a first capacitor, an inductor and a second capacitor.          The control signal applied to the first switch is in precise relation to the control signal applied to the second switch, as to assure a conduction-free period for both aforesaid switches, during which the transition from one rail voltage to the other will be provided by the energy stored during the conduction time in the inductor, such completely eliminating switching losses.
Patent CA-2027687-A1 (CA)
Title: Filtration media and method of manufacture
Inventor: SUNDET DOUGLAS C
IPC: D04H1/42
Filed: 1990-10-15
Abstract: The present invention relates to filtration material, more particularly, filtration material that is suitable for air filtration in heating, ventilating, and air conditioning systems. The primary objective of a high performance air filter is to provide maximum particle removal while maintaining an acceptable pressure drop. Conventional fibrous filters obtain improved particle removal efficiency by using filaments having small diameter, which can be packed closely together. This close packing results in smaller voids between the fibers, which increases the probability that particles will be intercepted by a fiber. This increase in particle removal is, however, accompanied by an increase in pressure drop.      Excessive pressure drops can restrict air flow and shorten filter life. This invention provides filtration material comprising a web comprising continuous, meltblown fibers and staple, electrically charged fibers randomly dispersed among the continuous fibers. The filtration material can be formed in planar configurations and in configurations other than planar. Non-planar configurations can extend the useful working area for a given filter element's cross-section without requiring an additional corrugating or pleating process step. The filtration material exhibits high strength and low pressure drop.