baber/WOPTO huggingface dataset:
Patent CA-2087730-C (CA)
Title: Use of crosslinked crystals as a novel form of enzyme immobilization
Inventor: NAVIA MANUEL A
IPC: C12N11/00
Filed: 1991-07-30
Granted: 1999-07-20
Abstract: A method of immobilizing an enzyme by forming crystals of the enzyme and, generally, also cross-linking the resulting crystals through the use of a bifunctional reagent; crosslinked, immobilized enzyme crystals (CLECs) made by this method; lyophilization of CLECs made by this method; lyophilized crosslinked immobilized CLECs and a method of making a desired product by means of a reaction catalyzed by a CLEC or set of CLECs.
Patent CA-2087880-C (CA)
Title: N-5-protected 2,5-diamino-4,6-dichloropyrimidines and process for their production
Inventor: STUCKY GERHARD
IPC: C07D239/48
Filed: 1993-01-22
Granted: 2004-06-15
Abstract: N-5-protected 2,5-diamino-4,6-dichloropyrimidines of the general formula: (see formula I) wherein R is a C1-C4 lower alkoxy group or a trifluoromethyl group, which are valuable intermediate products for the production of pharmaceutical agents with antiviral properties. The above-mentioned compounds are produced by cyclization of an N-protected amino malonic acid ester with guanidine in the presence of an alkali metal alcoholate and then chlorination of the resulting N-5-protected 4,6-dihydroxy-2,5-diaminopyrimidine.
Patent CA-2091085-C (CA)
Title: Flexible communication architecture for motion control system
Inventor: DI GIULIO PETER C
IPC: G05B19/418
Filed: 1993-03-05
Granted: 1999-10-19
Abstract: A cost-effective motion control system communication architecture is provided that supports a centralized control node, distributed control nodes, and smart I/O peripheral control nodes. Networks designed using this architecture, which employs a serial bus, may be readily modified or expanded. The architecture supports both real-time highly periodic communications and event-driven peer-to-peer communications.
Patent CA-2093720-C (CA)
Title: Pipe couplings
Inventor: GODFREY GEOFFREY CHARLES
IPC: F16L21/00
Filed: 1993-04-08
Granted: 1998-10-27
Abstract: A  metal fitting (11) for an end of a plain length  of pipe  (12)  comprises  a  body (13)  with  flange  means  (14) adjacent  a  first end (15),  a gland ring (16)  adjacent  the other end (17)  of the body, a grip ring (18) between the body (13)  and  the gland ring (16),  and screw fasteners (19)  for urging  the  gland ring (16) towards the  flange  means  (14); characterised in that:-the  body  (13) has an integral outer  tubular  spigot (20)  projecting  towards the gland ring (16) and  a  co-axial integral  inner tubular spigot (21) having a cylindrical outer surface (22) projecting beyond the free end (23) of the  outer tubular spigot (20),  the inside (24) of the outer spigot (20) being  provided with a frustoconical portion (25) adjacent and converging from that free end; the  gland  ring (16) has its inside provided  with  a similar frustoconical portion (26) converging in the  opposite direction; and the grip ring (18) is a split ring having external surfaces  (27,  28) mating with the frustoconical portions  in the   body  (13)  and  the  gland  ring  (16),   and  internal circumferentially    disposed  ribs  (29)   initially   spaced radially  from the cylindrical outer surface (22) of the inner spigot  (21)  by  no less than the thickness (T)  of  a  plain length of pipe (12) on one end of which the metal fitting (11) is intended to be fitted.
Patent CA-2094121-C (CA)
Title: 5-iodo-6-amino-1,2-benzopyrones and their analogs useful as cytostatic and antiviral agents
Inventor: KUN ERNEST
IPC: A61P35/00
Filed: 1991-10-16
Granted: 2002-12-31
Abstract: Unsubstituted or substituted 5-iodo-6-amino-1,2-benzopyrones and their analogs are potent, selective and non-toxic inhibi-tors and suppressants of cancer growth and viral infections in a mammalian host. The compounds are particularly useful for treatment and suppression of tumors and viruses associated with AIDS, herpetic episodes and cytomegaloviral infections.
Patent CA-2096224-C (CA)
Inventor: LI NAI-HONG
IPC: C12N11/08
Filed: 1992-09-14
Granted: 1996-03-26
Abstract: A method to prepare uniform populations of macroscopic beads containing pores of at least 0.1 microns diameter is described.  The beads consist essentially of a copolymer of a monoethylenically unsaturated monomer and a crosslinking polyethylenically unsaturated monomer, said resulting copolymer optionally being derivatized with functional groups, linking moieties, and/or affinity ligands.  The macroporous beads are obtained by utilizing, as a porogen in the polymerization reaction, porous inorganic particles which have been preabsorbed with a blowing agent.  The blowing agent is not activated until after the polymerization takes place; when the blowing agent is activated, the organic polymer which isolates the inorganic porogen particles from each other in the bead is destroyed.  Upon subsequent dissolution of the inorganic porogen, a network of pores throughout the organic copolymer-formed particle is formed.  The resulting beads are useful in a variety of chromatographic, analytical and biomedical techniques.
Patent CA-2103556-C (CA)
Title: Bicyclopolyazamacrocyclophosphonic acids, their complexes and conjugates, for use as contrast agents, and processes for their preparation
Inventor: KEIFER GARRY E
IPC: C07D487/08
Filed: 1992-12-10
Granted: 2002-04-16
Abstract: Bicyclopolyazamacrocyclophosphonic acid compounds are disclosed which may form inert complexes with Gd, Mn or Fe ions. The overall charge of the complex can be varied to alter the in vivo biolocalization. Such complexes can be covalently att-ached to an antibody, antibody fragment or other biologically active molecule to form conjugates. The complexes and conjugates are useful as contrast agents for diagnostic purposes. Processes for the preparation of the ligand, complex and conjugate are also disclosed.
Patent CA-2104270-C (CA)
Inventor: ALESIO THOMAS
IPC: H04M17/00
Filed: 1993-08-17
Granted: 1997-12-09
Abstract: Encumbrances on making calls charged to a card can be reduced by a) storing information so that an association is created relating a card number and at least one calling telephone station, from which card calls charged to the associated card are to be made, b) using the association to retrieve the card number at the time a card call is made from the at least one associated telephone station and c) automatically supplying the retrieved card number to the telephone network at the appropriate part of call set-up, so that the card number need not be entered by the calling party. The association between the card number and the telephone station, which may be referred to as a "logical link", is 1) independent of any pre-existing relationship between the card number, or any subset thereof, and the telephone number of the telephone station and 2) continues to exist despite the going on hook of the calling telephone station. In accordance with an aspect of the invention,personal identification information, such as the PIN assigned to the card number by the card issuer or a specially assigned PIN for use with the invention, may also be related to the calling telephone station and the card number by storing additional information to create an association among the calling telephone station, card number and PIN.
Patent CA-2104534-C (CA)
Inventor: BAUGH BENTON F
IPC: E21B7/08
Filed: 1993-08-20
Granted: 1999-01-19
Abstract: A retrievable whipstock which can be hydraulically set within a wellbore and following the drilling procedure mechanically released and retrieved for future use.  The whipstock includes a whip which directs a  milling tool from the main well and a hydraulically actuated packer or anchor for setting the whipstock in the wellbore.  The whip includes ratchet teeth on its side edges for mating engagement with a retrieval tool.  The retrieval tool includes a nose piece to ensure proper orientation relative to the whipstock and a clamping ring with ratchet teeth to engage the teeth  of  the whip.   The whipstock  is released  through the application of tension through the retrieval tool allowing removal from the wellbore.
Patent CA-2106230-C (CA)
Inventor: MORGAN DAVID W
IPC: C03C4/00
Filed: 1993-09-15
Granted: 1997-09-23
Abstract: This invention is directed to a glass containing elongated silver halide crystals selected from the group consisting of AgCl, AgBr, AgI, and mixtures thereof which is capable of polarizing radiation in the visible portion of the radiation spectrum and which does not exhibit photochromism when exposed to radiation in the ultraviolet/ visible portions of the radiation spectrum, wherein the composition of the glass is essentially free of copper and includes an amount of CeO2 effective to retain the silver in the glass composition in the oxidized state.
Patent CA-2110878-C (CA)
Inventor: EASON JOHN H
IPC: C07C43/04
Filed: 1993-12-07
Granted: 1997-07-22
Abstract: The alcohol, ether and hydrocarbon components of the reaction effluent from various etherifications of C4 or C5 isoolefins with an alcohol such as methanol or ethanol which produce MTBE, ETBE, TAME, or TAEE are separated using identical process equipment. The components are recovered by first removing a portion of the alcohol in a first water extraction step, then fractionating the ether, followed by the removal of additional alcohol in a second water extraction step and then fractionating the alcohol. Hydrocarbons are recovered from a extract stream of the second water extraction step.
Patent CA-2112767-C (CA)
Inventor: CESARO CLAUDE
IPC: H04Q1/457
Filed: 1994-01-04
Granted: 1997-03-18
Abstract: Tone-detection method for a call-progress process which detects at least one tone in a multifrequency dual-tone signal in a telecommunication apparatus having digital signal processing resources. The method involves the step of:            - computing (201) the value of the energy of the signal, - processing (201) said received signal to determine the existence of one or twotones in said signal, - applying a second-order or fourth-order autoregressive process in response to said determination and performing (203, 208) a first estimation of the autoregressive parameters of said received signal, - performing a digital band-pass filtering operation (205,210) adjusted to the result of the estimation of said autoregressive parameters to provide a partial elimination of the noise existing on said received signal, - reapplying (205, 210) a second-order or fourth-order autoregressive process in response to said determination and performing a final estimation of the autoregressive parameters of said received signal, - computing (206, 211) the values of the frequencies each tone from the value of said estimated parameters.   The determination of the number of tones existing in the signal is achieved by the computation of the ratio:                  which is theorically equal to 2 in the case of a unique tone, and conversely should be 4 in that of a dual tone. The first and final second-order autoregressive process are based on the predicting function having the z-transfer function:                  and which is associated with a Least Mean Square algorithm continuously adapting the parameters of the predictor in a sense allowing the minimizing of an error signal. On the other hand, the first and final fourth-order autoregressive process are based on the predicting function having the z-transfer function:                  To increase the accuracy of the tone-detection mechanism, the second-order autoregressive function is performed with the value of a2 parameter being constantly fixed to -1. Similarly, the fourth-order autoregressive process is performed with the values of a3 and a4 being respectively equal to a? and -1. The digital filter which provides the suppression of most of the noise existing in the signal having an unique tone is based on the z-transfer function:                  In the case of a dual-tone, the filtering is based on the function:                  Fig. 2
Patent CA-2114105-C (CA)
Title: Method for hydrophilizing absorbent foam materials
Inventor: DESMARAIS THOMAS ALLEN
IPC: C08J/
Filed: 1992-08-07
Granted: 1997-04-29
Abstract: Normally hydrophobic foams, such as polyurethane foams and polymerized water-in-oil emulsion foams, are rendered hy-drophilic by means of treatment with simple surfactants and hydrophilizing agent salts. Thus, a surfactant-containing foam is treated with a solution of, for example, calcium chloride, and is dried to leave a substantially uniformly distributed residue of hy-drated or hydratable calcium chloride on the surfactant-containing internal foam surfaces. In use, the combination of surfactant and calcium chloride hydrate provides a hydrophilic surface to the foam. Other hydratable calcium or magnesium salts such as magnesium chloride can be used. The resulting hydrophilized foams are suitable for use in absorbent devices, including diapers, sanitary napkins, bandages, and the like.
Patent CA-2115547-C (CA)
Title: Blowing agent and process for preparing polyurethane foam
Inventor: BARTLETT PHILIP L
IPC: C08J9/14
Filed: 1992-08-19
Granted: 2002-07-16
Abstract: The use of 1,1-difluoroethane (HFC-152a) and dimethyl ether, optionally with up to 50 mole % of water, as the blowing agent is disclosed as an efficient route to a rigid, closed-cell polyurethane or polyisocyanurate foam of improved cell structure and excellent insulation properties.
Patent CA-2125679-C (CA)
Inventor: MASAAKI ISHIZUKA
IPC: C07D233/88
Filed: 1993-10-15
Granted: 2005-06-28
Abstract: A novel amino acid derivative represented by the general formula (T) shown below or a salt thereof have now been provided by chemical synthesis, and it has been found that these new compounds stimulate proliferation and physiological activities of the T cells of mammals, have an immunomodulating activity and also have an antitumor activity or a carcinostatic activity. It has also been found that these new compounds have an effect of stimulating the proliferation of hematopoietic stem cells. (see formula I) wherein y is 0 or 1; R1 represents an unsubstituted C1-C8 alkyl group or others;      R2 represents a hydrogen atom, a C1-C5 alkyl group or others;      R3 represents a hydrogen atom, a C1-C8 alkyl group or others;      R4 represents a hydrogen atom, a C1-C3 alkyl group or others;      R5 represents a group -OR42, a group (see formula II) or others.
Patent CA-2129687-C (CA)
Inventor: STUMPF WILLIAM S
IPC: A47C7/40
Filed: 1994-08-05
Granted: 1999-06-29
Abstract: An improved seat back height adjustment mechanism for a chair is disclosed.  The improved height adjustment mechanism includes a U-shaped mounting bracket having a back wall and two side walls. A longitudinal shaft having a handwheel is rotatably mounted in the bracket between the side walls and spaced from the back wall.  A seat back support arm is insertable through the bracket between the shaft and the bracket back wall.   A back plate provided with a rack and an adjacent planar surface both extending along the length of the back plate is mounted onto the seat back support arm. In one aspect, the shaft is provided with a pinion for engaging the rack and a multi-sided, symmetrical cam adjacent the pinion for locking the shaft against free rotation.          When assembled, the rack and the planar surface of the back plate are aligned with the pinion and cam respectively.  When the shaft is rotated via the handwheel, the pinion rotates and engages the rack thereby causing the seat back support arm to be vertically displaced with respect to the mounting bracket.  When a planar face of the cam is contiguous with the planar surface of the back plate shaft rotation is resisted thereby locking the height adjustment mechanism.
Patent CA-2133531-C (CA)
Title: Automatic brewer
Inventor: BUNN ARTHUR H
IPC: A47J31/60
Filed: 1994-10-03
Granted: 1997-03-18
Abstract: An automatic beverage brewing apparatus (20) which includes a brew chamber (24) having an inlet (34) and an outlet (41) and a water distribution  system  (30)  associated with the  brew chamber (20) for introducing brew water and flush water therein. A filter assembly (164) is disposed in the brew chamber (24). An opening (147) is formed through the filter assembly (164) for communicating with the outlet (41) of the brew chamber (24). A flush water dispenser  (172)  is associated with the water distribution system (30) and is positioned centrally in the brew chamber  (24)  for  rinsing  inside  surfaces  of  the  brew chamber (24).  A piston assembly  (26) disposed in the brew chamber  (24) including a spool (58) and a device (28) for controllably moving the spool in axial and rotary directions. The spool (58) includes a head (122), a base (125), and a necked portion (127) extending  between  the  head (122) and  the base (125).  The spool (58) is disposed in the brew chamber (24) with the head (122) controllably movable in the inlet (34) and the base  (125)  controllably movable in the outlet  (41)  for controllably opening and plugging the inlet (34) and outlet (41). A port (178) is formed through an exterior surface of the spool (58) between the head (122) and the necked portion (127). The port (178) is associated with the flush water dispenser for dispensing flush water therethrough.  The invention also provides an apparatus and a method for producing large quantities of a desired brewed beverage.  Multiple substance dispensers (22) are provided to selectively combine a variety of substances to produce a desired brewed beverage.  Heated water is conserved by the present invention by providing a control valve (82c) on the inlet line (78) at the lower portion of the heated water reservoir (76).
Patent CA-2136815-C (CA)
Title: Round baler monitoring and control system
Inventor: MCINTYRE THOMAS J
IPC: A01F15/08
Filed: 1994-11-28
Granted: 2000-04-18
Abstract: A control system for a large round baler includes a microprocessor-based implement module mounted to the baler and an input device mounted within the cab of the tractor behind which the baler is towed. The implement module receives inputs from the input device for setting and/or adjusting parameters of baler operation.      Sensors are interconnected with various components of the baler for sensing operation of such components, and provide signals to the implement module indicative of baler operations. The sensor signals are analyzed by the microprocessor of the implement module, and various operations of the baler are controlled responsive to the sensor inputs.
Patent CA-2138980-C (CA)
Inventor: PALUMBO GIANFRANCO
IPC: D04H1/40
Filed: 1993-06-25
Granted: 1999-01-26
Abstract: L'invention porte sur une structure adsorbante mince, en couches, qui comprend une première et une seconde couches (1, 2) de matériel fibreux et une couche intermédiaire (5) composée de particules d'un matériau hydrogel et adsorbant (6) et de particules d'un matériau organique, polymérique, thermoplastique (7); les première et seconde couches fibreuses (1, 2) dépassent latéralement la couche intermédiaire (5) afin de constituer des rebords longitudinaux (8). Les deux couches fibreuses (1, 2) sont liées ensembles, ainsi qu'avec la couche intermédiaire (5) par la fusion des particules de matériau organique, polymérique et thermoplastique (7) et au moyen d'une ligne continue (10) d'adhésif se prolongeant longitudinalement sur chaque rebord longitudinal (8).
Patent CA-2151199-C (CA)
Title: Image-forming apparatus and manufacture method of same
Inventor: SATO YASUE
IPC: H01J31/08
Filed: 1995-06-07
Granted: 2000-11-14
Abstract: An image-forming apparatus comprises a rear plate including electron-emitting devices formed thereon, a face plate including a fluorescent film formed thereon and being disposed to face the rear plate, a spacer in the form of a flat plate disposed between the rear plate and the face plate, and an outer frame surrounding peripheral edges of the rear plate and the face plate.  Electrons emitted from the electron-emitting devices are irradiated to the fluorescent film to thereby display an image under condition where an inner space of a container constructed by the rear plate, the face plate and the outer frame is evacuated through a vent tube into a depressurized state.  The vent tube is attached to a side of the outer frame that is positioned across an imaginary extension of the flat-plate spacer in the longitudinal direction thereof, or to the face plate or the rear plate in the vicinity of that side of the outer frame.  With such arrangements, evacuation conductance is increased to reduce an evacuation time, and a higher vacuum level is achieved in the container so that an image can be stably displayed for a long term.
Patent CA-2151310-C (CA)
Title: Method of displaying multiple sets of information in the same area of a computer screen
Inventor: JOHNSTON KEVIN R
IPC: G06F3/0482
Filed: 1995-06-08
Granted: 2003-11-11
Abstract: A method for displaying on a computer screen multiple sets of information needed on a recurring basis is disclosed. By this method, an area whose maximum dimension is smaller than the whole area of the screen is set on the computer screen, and a plurality of selection indicators are provided in the area, one selection indicator is provided for every information set.      Then, one of the plurality of information sets is selected by pointing to one of the selection indicators within the established area, whereby the selected set of information will be substituted within the established area for the set of information previously being displayed therein. A selected set of information may also be moved out of the selected area by pointing to its selection indicator and dragging it away.
Patent CA-2151588-C (CA)
Title: Antiproliferative substituted 5-thiapyrimidinone and 5-selenopyrimidinone
Inventor: VARNEY MICHAEL D
IPC: A61P29/00
Filed: 1993-12-10
Granted: 2002-03-19
Abstract: Novel derivatives of 5-thia- and 5-selenopyrimidinone are found to inhibit the enzyme glycinamide ribonucleotide formyl transferase (GARFT) and amino imidazole carboxamide ribonucleotide formyl transferase (AICARFT). Novel intermediates of these compounds are also disclosed. A novel method of preparing such compounds is also disclosed, as well as methods and compositions for employing the compounds as antiproliferative agents.      Compounds of the present invention include a compound having the formula III:   (see formula I) wherein: n represents an integer from 0 to 5;      A represents sulfur or selenium;      X is methylene, monocyclic carbo- or heterocyclic ring, O, S, or -NH-;      Ar is phenylene or 2,5-thienyl; and R1 and R2, which can be the same or different, are hydrogen or alkyl radicals having 1 to 6 carbon atoms; or a pharmaceutically acceptable salt thereof, OR a compound of the formula X:   (see formula II) wherein:      A represents sulfur or selenium;      Ar represents an unsubstituted phenylene or thienylene radical;      R1 and R2 represent, individually, hydrogen or C1 to C6 alkyl;      R3 represents hydrogen or a straight, branched or cyclic C1-C6 alkyl group, optionally carrying one or more halogen, hydroxyl or amine groups; or a pharmaceutically acceptable salt thereof.
Patent CA-2154675-C (CA)
Inventor: HONEYCUTT TRAVIS W
IPC: A41D31/02
Filed: 1993-12-01
Granted: 2002-06-18
Abstract: A composite fabric and its method of disposal after use.  Garments, linens, drapes, towels and other useful articles are provided as the composite of a reusable first component and a woven, non-woven, knitted or otherwise formed fabric of thermoplastic polyvinyl alcohol polymer as a second component. The second component is water soluble in temperatures above approximately 140°F. After use, the composite is subjected to water of sufficient temperature to substantially dissolve the thermoplastic polyvinyl alcohol component but not the reusable first component.