baber/WOPTO huggingface dataset:
Patent CA-2117488-A1 (CA)
Title: Overworn lens signaling methodology
Inventor: DZIABO ANTHONY J JR
IPC: G02C13/00
Filed: 1993-02-17
Abstract: A method for signaling a lens user when the user's lenses are overworn. The lenses have applied a handling tint, and the lenses are disinfected in an oxidant solution. The amount of tint added to the lens is such that after soaking the lens for a predetermined period of time in the disinfectant solution, over the expected lifetime of the lens, a noticeable change in the appearance of the handling tint is observed. If the lens is intended to have a fixed lifetime, and the lens is intended to be soaked in a disinfectant solution on a regular basis and for a fixed period of time for the lens lifetime, the amount of the handling tint in the lens can be adjusted such that the handling tint is bleached out or changes color after the lens undergoes regular disinfection within the predetermined lens lifetime.
Patent CA-2119139-A1 (CA)
Title: Image-recording materials
Inventor: CHINOPOROS EFTHIMIOS
IPC: G03C8/10
Filed: 1993-07-27
Abstract: There are disclosed dye-providing compounds comprising color coupler dyes substituted on the phenylene diamine portion with one or two cyclic 1,3-sulfur-nitrogen groups. The dye-providing compounds are capable of releasing the coupler dye upon cleavage in the presence of silver ions or a soluble silver complex. The dye-providing compounds are useful as image-forming materials in color thermographic, photothermographic and other photographic processes.
Patent CA-2120850-A1 (CA)
Inventor: KUMAGAI TATSUYA
IPC: G01C19/72
Filed: 1994-04-08
Abstract: In an optical-fiber gyro for detecting a rotational angular velocity by a Sagnac phase difference of light signals propagated through an optical-fiber sensing loop, no polarizer is used, and a light source having a difference in attenuation or amplification factor between two orthogonally-polarized light streams is used.  Alternatively, a light source is optically-coupled to an optical coupler for supplying two divided light signals to the sensing loop and for receiving the two light signals after their propagation through the sensing loop in an optical fiber of a predetermined length.   The length of the fiber is set according to a relationship in which a distance difference determined by the predetermined length and a phase difference  of  two  orthogonally-polarized  light  streams propagated  through  the  optical  fiber  is  greater  than  an interference distance of the light source.
Patent CA-2121243-A1 (CA)
Title: Methods and compositions for mineralizing and fluoridating calcified tissues
Inventor: TUNG MING S
IPC: A61K6/838
Filed: 1992-11-24
Abstract: This invention involves new compositions and methods of use and delivery of amorphous calcium compounds such as: amorphous calcium phosphate (ACP), amorphous calcium phosphate fluoride (ACPF), amorphous calcium carbonate phosphate (ACCP), amorphous calcium carbonate phosphate fluoride (ACCPF), and amorphous calcium fluoride (ACF) for use in remineralizing and fluoridating teeth. These amorphous compounds or solutions which form the amorphous compounds, when applied either onto or into dental tissue prevent and/or repair dental weaknesses such as dental caries, exposed roots and dentin sensitivity. The compounds have the highest solubilities, fastest formation rates and fastest conversion rates (to apatite) among all the calcium phosphates under physiological conditions.  Moreover, in the presence of fluoride the amorphous compound converts rapidly to fluoride containing apatite.
Patent CA-2122913-A1 (CA)
Inventor: KEMP WILLARD E
IPC: F16K5/06
Filed: 1992-10-21
Abstract: A ball valve (10) has a stem (28) to rotate a ball member (20) with a lower key or lug (29) received within a slot or opening (26) forming a keyway in the ball member (20). As shown particularly in (Figures 2 and 3), relieved or cutaway surfaces (52, 54, 56) are provided between lug (29) and the outer spherical surface (24) of ball member (20) so that a torque exerted by rotation of the stem (28) contacts surfaces (34, 36) of the slot (26) along opposed corners (48) which are spaced a distance T1 from the outer spherical surface (24) of ball valve member (20) thereby removing or minimizing any stress concentrations adjacent outer spheri-cal surface (24).
Patent CA-2125320-A1 (CA)
Title: Apparatus for vitrifying soot preform for optical fiber
Inventor: ITO MASUMI
IPC: C03B8/04
Filed: 1994-06-07
Abstract: ABSTRACT OF THE DISCLOSURE    An apparatus for vitrifying a soot preform from which an optical fiber is produced by drawing, is composed of a main vacuum chamber 20 in which a muffle tube 70 for vitrifying the soot preform PF is located, and an auxiliary vacuum chamber 30 mounted on the main vacuum chamber 20 and communicated therewith through a passage, and a gate valve 60 for opening and closing the passage. The muffle tube 70 has a inner surface covered with silicon carbide layer 70a.
Patent CA-2127254-A1 (CA)
Title: Borehole logging tool
Inventor: LESTER ROBERT A
IPC: G01V1/52
Filed: 1993-11-04
Abstract: A logging-tool assembly (16) for generating both flexural wavefields and compressional wavefields in the sidewall formations (30) encountered by a borehole (10). The assembly consists of a sonde (16) constructed of a plurality of segments (34, 36) that are axially rotatable with respect to each other. Each one of two of the segments includes a compartment in which is mounted a dipole bender bar transmitting transducer (40). Two additional segments (100, 102) each contain one or more binaurally sensitive receiver transducers (108, 110). Monopole transmitting (44) and receiving (110) transducers are also included in the respective appropriate segments. An acoustic isolator (29) of novel construction acoustically separates the transmitting transducers from the receiving transducers.
Patent CA-2128791-A1 (CA)
Title: Meter-base electrical service shield
Inventor: MUSSELMAN PAUL R
IPC: G01R11/04
Filed: 1994-08-26
Abstract: A  meter-base  electrical  service  shield  comprises  a  releasable, electrically insulating, clip-on cowling for engaging in frictionally secured, fixed relation in a meter-base housing.  The cowling is adapted to at least partially surround a line-side, meter-base terminal block, and to thereby co-operate with the housing to generally physically surround and electrically isolate the line-side terminal block from proximal load-side electrical fittings located in the meter base.
Patent CA-2130653-A1 (CA)
Inventor: KUCHARSKI JOHN G
IPC: B65G15/02
Filed: 1994-08-22
Abstract: A spiral overlay having multiple variations, but generically, comprised of wire spirals intermeshed together by connecting rods extending across the conveyor in the transverse direction. Broadly, a first overlay is made up of spirals which may be tapered and afford pitch control by incorporating elongated loops in the spirals to limit the movement of the rods therein. The elongated loops also provide for collapsibility of the spirals relative to one another. A second overlay is made of integral or modular spirals such that the overlay includes upstanding spiral elements on its conveying surface to provide traction and separation of the articles being conveyed.
Patent CA-2131602-A1 (CA)
Title: Slot antenna with reduced ground plane
Inventor: MILLER ALAN W
IPC: H01Q13/10
Filed: 1994-09-07
Abstract: Abstract of the Disclosure A slot antenna has a substantially reduced ground plane by defining the slot within a loop of a narrow conductive strip, for example a deposited metal, around a slot opening less than one half the wavelength of the intended signal frequency to be received by the antenna.  A conductor such as a central conductor of a coaxial cable coupled to the conductive strip on one side of the slot, while another conductor such as the ground shield of the coaxial cable is terminaled at a position across the slot from the central conductor terminal.  In addition, the gain and bandwidth of the antenna may be improved by adding a similarly constructed loop or loops of slot antenna in parallel to the first slot to form an overlapping series of loops.  Such a modification forms a ground plane with an overlapping series of loop conductors.  As a result, the present invention permits a convenient, window mounted antenna assembly, as well as a particularly advantageous combination of window mounted antenna assemblies for a single window panel of a motor vehicle, and is particularly well adapted for use with remote keyless entry systems as well as cellular telephone systems.
Patent CA-2133284-A1 (CA)
Inventor: KUDREVICH SVETLANA V
IPC: A61K31/495
Filed: 1994-09-29
Abstract: Disclosed herein are water-soluble octacarboxy substituted tetra(2,3-pyrazino)porphyrazines of the following formula:       (I) wherein M is HH, Cu, VO, Co, Ni or Zn; and R is C2H5, n-C4H9, n-C6H13, n-C8H17 or ONa.          The present invention discloses photoinactivators and more particularly a novel class of water soluble azaphathalocyanines (AzaPc's), functionalized on the macrocyle with carboxy substituents to yield octacarboxy substituted tetra(2,3-pyrazino)porphyrazines (TTPA's).  The invention also relates to processes for their preparation and the use thereof for the photodynamic therapy of cancer and the inactivation of viruses or bacteria in stored blood products.
Patent CA-2133780-A1 (CA)
Title: Crank Adjusted Depth Control for an Implement
Inventor: PECK DONALD R
IPC: A01B63/22
Filed: 1994-10-06
Abstract: A depth control includes an actuator tube connected for movement with the rockshaft and having a threaded crank supported on the forward end of the tube.  A valve operator bracket is slidably and nonrotatably received over the tube and includes a threaded portion engaging the crank threads to positively locate the bracket relative to the tube.  The bracket carries a plunger which, as the rockshaft lowers the implement to the working position, is moved into contact with a valve actuator to close a valve and prevent further lowering of the implement.  One turn of the crank gives the same positive movement along the tube each time the depth setting is adjusted so that working depth can be set very accurately and easily.
Patent CA-2136497-A1 (CA)
Title: Process for the preparation of o-substituted oximes
Inventor: BLASER DENIS
IPC: C07C251/54
Filed: 1994-11-23
Abstract: The invention relates to a process for the hydroxyalkylation of aldoximes and ketoximes by reacting said oximes with unsubstituted or substituted ethylene or propylene carbonate in the presence of a catalyst, which comprises the use of catalytic amounts of aN-alkylated, stable, organic amidine base or a pyridine which is substituted by a secondary amino group. The compounds are important intermediate for the synthesis of herbicides.
Patent CA-2136725-A1 (CA)
Title: Apparatus and process for packaging articles
Inventor: BOYHAN LAURENCE A
IPC: B65B5/08
Filed: 1993-05-26
Abstract: Apparatus for packaging articles is provided comprising a plate member (10) having a plurality of apertures (12a, 12b, 12c) therein. Each aperture has at least two openings and receives an article or group of articles (14, 22, 24) through a first opening. Each aperture has non-return stop means (20) to releasably retain an article or group of articles (14, 22, 24) therein. Plate member (10) has means to register (32, 34) one or more packages (26) there against so that rotation of plate (10) and package (26) or packages while in registration allows articles (14, 22, 24) in the apertures (12a, 12b, 12c) to move into positions in package (26) predetermined by the position of the apertures (12a, 12b, 12c). The invention also provides process of packaging articles using such a plate member (10).
Patent CA-2139668-A1 (CA)
Title: Composition of low type iii content human placental collagen
Inventor: PHARRISS BRUCE B
IPC: A61K38/17
Filed: 1993-07-29
Abstract: A human placental collagen composition for use in soft tissue augmentation comprising an aqueous suspension of a hom-ogenized nonirradiation-sterilized mixture of type I and type III human placental collagen, wherein the type III collagen consti-tutes less than about 10 % by weight of the mixture.
Patent CA-2139799-A1 (CA)
Title: Detonator protector
Inventor: HEDGER JOHN T
IPC: F42B39/30
Filed: 1995-01-09
Abstract: A protector for use in the transportation and storage of detonators comprising, a detonator holder which is open at one end for insertion of a detonator and closed at the other end, and which radially encloses the base charge of said detonator, at least one detonator retaining means integral with the detonator holder, and a first wall which is radially spaced around the holder, and wherein the holder and wall define a space, wherein in use, the detonator retaining means holds the detonator within the holder such that a free volume is provided around the base charge of the detonator.
Patent CA-2140235-A1 (CA)
Title: Parallel seal assembly
Inventor: KENNEDY BRIAN S
IPC: E21B33/047
Filed: 1995-01-13
Abstract: A scoophead/diverter assembly functions to orient and anchor multiple tubing strings at the Y-juncture in an oil or gas well with multiple lateral wellbores. An important advantage of this arrangement is to provide communication to multiple reservoirs or tap different locations within the same reservoir, and enable re-entry to these wellbores for remediation and stimulation. The large bore of the scoophead enables a secondary wellbore's production tubing (liner) to pass through until the top of the liner is in the scoophead. In order to effect a seal inside the scoophead, a novel offset parallel seal assembly with centralizer is utilized. This parallel seal assembly carries compressive loads on the primary wellbore side, and has a shear out mechanism on the secondary wellbore side. This seal assembly also may constitute the connection between the scoophead and a selective re-entry tool (SRT). The SRT is a tool that ties the two separate tubing strings below it into a single production tubing string to surface or the next lateral. This parallel seal assembly has two seal assemblies parallel to one another with one seal assembly being larger diameter and longer than the other. The larger seal assembly seals into the seal bore of a tie back sleeve which is latched into the scoophead, and is attached to the top of the secondary wellbore's production tubing string. The smaller seal assembly seals in the small bore of the scoophead. The smaller assembly acts to isolate the primary wellbore. The larger seal assembly is longer than the smaller to allow it to enter its bore and align the assembly. The alignment is accomplished by trapping the larger seal assembly in its bore and trapping the centralizer in the wellbore. This positively limits the rotational mis-alignment available to the smaller seal assembly prior to stabbing into the scoophead.
Patent CA-2144697-A1 (CA)
Title: Dynamic Diffuser of a Substance Such as a Perfume
Inventor: LAGNEAUX PATRICK
IPC: A61L9/12
Filed: 1995-03-15
Abstract: The dynamic diffuser for a naturally diffusing liquid substance such as a perfume comprises a receptacle (14) for said substance (12) and having a vertical flank which is closed by a membrane (16) that is impermeable to liquid but permeable to gas.  All or part of the membrane (16) is caused to come into contact with said substance (12), at least intermittently, by revolving the receptacle about a horizontal axis (D).  Air-flow generating means, e.g. impeller blades (6), serve to cause air to flow over the outside of the membrane (16).
Patent CA-2149691-A1 (CA)
Title: Medicament for therapeutic and prophylactic treatment of diseases caused by smooth muscle cell hyperplasia
Inventor: YAMADA KUMI
IPC: A61K31/50
Filed: 1995-05-18
Abstract: A medicament for the therapeutic and prophylactic treatment of a disease caused by smooth muscle cell hyperplasia which comprises as an active ingredient an aminopyridazine derivative or a salt thereof represented by the following Formula (I), e.g. (R)- 1-(cyclohexylethylamino)-4-phenylphthalazine.               (I)
Patent CA-2150861-A1 (CA)
Title: Flip-flop with programmable sliding set-up and hold window
Inventor: LEE CHRISTOPHER EDWARD
IPC: H03H19/00
Filed: 1995-06-02
Abstract: A timing programmable flip flop system comprised of apparatus for receiving a data signal, apparatus for receiving a clock signal, a flip flop having data and clock inputs, a first delay line having plural serial delay elements for receiving one of the data signal and clock signal and apparatus for delivering a corresponding delayed one of the data signal and clock signal to a corresponding data or clock input, and a delivery circuit for receiving another of the data signal and clock signal and for delivering a corresponding another of the data signal and clock signal to another of the data or clock input, apparatus for selecting a number of delay elements in the delay line whereby a delay in one of the data signal and clock signal is adjustable, and apparatus for providing an output signal from the flip flop.
Patent CA-2151770-A1 (CA)
Title: Preparation of polymers based on 1-vinylimidazoles
Inventor: SCHADE CHRISTIAN
IPC: C08F26/06
Filed: 1995-06-14
Abstract: Polymers based on vinylimidazoles are prepared by free-radical precipitation polymerization in an organic solvent or solvent mixture which contains no aromatic groups and, apart from oxygen, no heteroatom.
Patent CA-2157795-A1 (CA)
Title: Procede perfectionne d'epuration d'eaux usees du type "a boues activees", permettant d'accroitre les rendements d'epuration
Inventor: CLAUSS FREDERIC
IPC: C02F3/22
Filed: 1994-03-10
Abstract: L'invention concerne un procédé pour l'augmentation du rendement d'épuration dans le bassin d'activation d'une station d'épuration d'eaux usées mettant en oeuvre le procédé dit à "boues activées". Selon l'invention, on introduit dans la biomasse du talc, pyrophyllite, kaolin ou mica, éventuellement cationisé, avec une taille des particules inférieure à 100 µm dans des quantités allant jusqu'à 2,0 g par litre d'eaux usées. On observe une amélioration importante de la séparation solide/liquide en sortie du bassin d'activation ainsi qu'une augmentation du rendement d'épuration en pollution carbonnée, du rendement d'épuration en pollution azotée et du rendement d'épuration en pollution phosphatée même si la station fonctionne en moyenne ou forte charge.
Patent CA-2159929-A1 (CA)
Title: Segmented centerbody for a double annular combustor
Inventor: STENGER RICHARD E
IPC: F23R3/34
Filed: 1995-10-05
Abstract: A double annular combustor having concentrically disposed inner and outer annular combustors is provided with inner and outer domes. A centerbody is disposed between the inner and outer domes and is constructed of a plurality of substantially rectangular segments positioned such that circumferential gaps between adjacent centerbody segments align alternatively with and between carburetors positioned in the inner and outer domes.
Patent CA-2160685-A1 (CA)
Title: Device for processing and vitrifying waste
Inventor: LIAGRE FRANCOIS
IPC: F27D99/00
Filed: 1994-04-15
Abstract: A device for processing waste, particularly hospital waste, comprising a gasification chamber (1) into which waste is fed so that it can be degassed and burnt, a post-combustion chamber (2) for burning gas from the gasification chamber, and a melting chamber (3) where the slag from the gasification chamber (1) is vitrified by exposure to a high temperature.
Patent CA-2161387-A1 (CA)
Title: Rapid and efficient regeneration of transgenic plants
Inventor: FRY JOYCE ELLEN
IPC: C12N15/82
Filed: 1995-10-25
Abstract: A rapid transformation regeneration system is disclosed. This system takes two-three months to obtain transgenic plants. Transformation efficiencies are very high. This system also has been demonstrated with several different selecting systems and is particularly useful for transforming wheat.
Patent CA-2162420-A1 (CA)
Title: Roll-up door for vehicle shelters
Inventor: LEPAGE ROBERT
IPC: E06B9/13
Filed: 1995-11-08
Abstract: A roll-up closure device for typically collapsible vehicle shelters of the type having a structure made of assembled tubular members and cross-members and a complementary covering therefor made of a flexible plastics material and defining at the front end thereof a door opening. The side walls of the shelter are inclined in such a way as to diverge from top to bottom, whereby the door opening has generally a isosceles trapezoidal shape.      The roll-up closure device includes a pair of opposed side guide rails mounted to the shelter structure at laterally opposite sides of the door opening so as to follow the angled sides thereof, an overhead motor driven roll-up boom extending across the shelter and above the door opening, and a flexible closure,shaped like the door opening and having its lateral side edges slidably engaged in the guide rails, whereby the closure device does not substantially reduce the lateral dimensions of the door opening. Cables attached to the roll-up boom are secured to the lateral edges of the closure so that the rotation of the boom causes the cables to wind around respective tapered pulleys provided near each end of the boom with the closure in a rolled attitude extending between the pulleys. Stretched elastics are secured to the lower part of the closure to laterally retract the side edges of the latter towards each other as the closure is being raised. A tensioning mechanism is provided to ensure that the cables remain taut at any position of the closure.
Patent CA-2165052-A1 (CA)
Inventor: GUSTAVSON LINDA M
IPC: A61K51/04
Filed: 1994-07-12
Abstract: Chelating compounds of specified structure are useful for radiolabeling targeting proteins such as antibodies as well as proteinaceous and non-proteinaceous ligands and anti-ligands.  The radiolabeled antibodies, ligands or anti-ligands, or catabolites thereof, demonstrate improved biodistribution properties, including reduced localization within the intestines.
Patent CA-2165519-A1 (CA)
Inventor: DE LACHARRIERE OLIVIER
IPC: A61K38/00
Filed: 1995-12-18
Abstract: L'invention se rapporte à l'utilisation d'un antagoniste de substance P dans ou pour la préparation d'une composition cosmétique ou pharmaceutique notamment à application topique pour traiter les prurits, les algies oculaires ou palpébrales et les dysesthésies oculaires ou palpébrales. La composition cosmétique peut être utilisée pour le maquillage ou le démaquillage des yeux sensibles.
Patent CA-2165975-A1 (CA)
Title: Methods and apparatus for determining a displacement of an object and unit for linearization of an electrical signal
Inventor: LARSEN GUNNER HOLM
IPC: G01D3/02
Filed: 1994-06-21
Abstract: The displacement of an object of an electrically conducting material is determined. To determine the displacement, an electromagnetic field creating eddy currents in the object is established by means of a transducer being placed adjacent to and spaced from the object, and a first electrical signal which represents the impedance of the transducer is provided. The first electrical signal may be represented by a first vector having first and second components, the first component being a second vector dependent on characteristics of the transducer and on the distance between the transducer and the object, and the second component being a product of a first factor which is a real number and a second factor which is a third vector. Here, the first factor depends on the characteristics of the transducer, the distance between the transducer and the object, and characteristics of the object, and the third vector depends substantially on the characteristics of the transducer. The first electrical signal is processed, which processing includes stimulating projection of the first vector onto an axis being generally at right angles to the second component so as to substantially eliminate the dependency on the characteristics of the object. The invention also relates to a unit for linearization of an electrical signal. An input signal is approximated to a polynomial function with positive broken exponents. The polynomial function is used in a feed back loop.