baber/WOPTO huggingface dataset:
Patent CA-2011188-A1 (CA)
Inventor: ISHIMARU NAOSHI
IPC: C08F4/654
Filed: 1990-02-28
Abstract: A catalyst for polymerization of an olefin, said catalyst being formed from [A] a solid titanium catalyst component comprising magnesium, titanium, halogen and an electron donor as essential ingredients, [B] an organoaluminum compound catalyst component, and [C] an electron donor catalyst component comprising at least two electron donors including an electron donor (1) and an electron donor (2), the MFR (a) of homopolypropylene obtained by using the electron donor (1) together with the solid titanium catalyst component [A] and the organoaluminum compound catalyst component [B] has the following relation to the MFR (b) of homopolypropylene obtained by using the electron donor (2) under the same polymerization conditions as in the case of using the electron donor (1) log [MFR (b) /MFR (a) ] ~ 1.5 .      This catalyst can give an olefin polymer having a brand molecular weight. Also provided is a process for polymerizing or copolymerizing an olefin in the presence of the above catalyst.
Patent CA-2011704-A1 (CA)
Title: Endometriosis diagnosis methods and reagents
Inventor: TENG NELSON N H
IPC: G01N33/551
Filed: 1990-03-07
Abstract: ABSTRACT OF THE INVENTION    A method for determining the presence of endometriosis in a patient comprises contacting a sample from the patient with an anti-(endometriosis) antibody, antigen, or endometriosis antiidiotype antibody, and determining binding of antibody or antigen with a component of the sample.  The patient sample can be a fluid sample such as a blood serum sample, or it can be a tissue sample or cell smear. Reagents and immunoassay kits for determining endometriosis are described.
Patent CA-2012129-A1 (CA)
Title: Recovery of difluoro sugar
Inventor: NAGARAJAN RAMAKRISHNAN
IPC: C07H13/04
Filed: 1990-03-14
Abstract: Abstract of the Disclosure A process for recycling the difluoro sugar in the synthesis of 2,2-difluoronucleosides proceeds by removing the base moiety from .alpha.-difluoronucleosides by reduction and hydrolysis, followed by oxidation to put the difluoro sugar in a form conveniently recycled into the synthesis, and intermediates useful therefor.
Patent CA-2012237-A1 (CA)
Title: Y-ba-cu-o superconductor
Inventor: FLEISCHER ROBERT L
IPC: H01L39/12
Filed: 1990-03-15
Abstract: RD-18,516 Typed:  7/12/89 Y-BA-CU-O  SUPERCONDUCTOR                              ABSTRACT            A polycrystalline Y-Ba-Cu-O superconductor doped with sufficient 235U and/or 239Pu atoms is irradiated with thermal neutrons to produce from about 2.5 x 1014 to about 50 x 1014 fission events per cubic centimeter of superconductor.
Patent CA-2013452-A1 (CA)
Inventor: MARSEK PATRICK W
IPC: B05B15/04
Filed: 1990-03-30
Abstract: A method for coating a first portion of a configured surface having a second portion adjacent thereto to be covered by a mask before the coating is applied, thereby restricting the coating to the first portion, comprising the steps of:     (a)  separating the portions by surrounding at least part of the perimeter of the first portion with an edging means in the form of a thin flexible barrier strip adherent to the hereafter-specified masking solution: (b)  applying to at least a part of the second portion, adjacent the barrier strip, a water soluble masking solution comprising a mixture of (i) a water soluble aliphatic polyhydroxy liquid carrier, (ii) a water soluble thickener, and (iii) water;     (c)  pressing the barrier strip against the masking solution to produce a guarding edge;     (d)  applying the coating to the first portion up to the guarding edge;     (e)  drying the coating and subsequently removing the edging means; whereby the masking solution inhibits dust on the second portion from marring the coating and protects the second portion against coating overspray.  The invention also relates to a liquid spray mask composition used to settle dust and also to a masking system.          The method, composition and system are particularly useful in masking the body of a vehicle (for example) to protect an un-damaged area against overspraying.
Patent CA-2013649-A1 (CA)
Inventor: ESANU ANDRE
IPC: C07D491/04
Filed: 1990-04-02
Abstract: This invention relates to a method for the separation of stereoisomers of 7-hydroxy-furo[3,4-c]pyridine derivatives of the formula   wherein R3, R4 and R6 represent various substituents, which comprises  reacting  a  fully  O-acetylated  monosaccharide halogenide    with    a    racemate    of    the    selected 7-hydroxy-furo[3,4-c]pyridine derivative,  to form the (+) and (-)  (O-acetylated monosaccharide) (furo[3,4-c] pyridine 7-yl derivative)  ethers,  then separating the  (+)  and the (-)    ethers   by   selective   crystallization,   in   an hydroalcoholic medium, either of the acetylated forms or of the corresponding desacetylated forms and, finally, working up each of the separated derivatives by the usual routes.
Patent CA-2013803-A1 (CA)
Inventor: SUGIHARA YASUO
IPC: A23L3/3436
Filed: 1990-04-04
Abstract: The present invention relates to novel oxygen absorbents comprising as main ingredients a 1, 2-glycol, glycerine or a sugar alcohol and a phenolic or quinone compound.
Patent CA-2014970-A1 (CA)
Title: Oxidation resistant titanium-base alloy
Inventor: PARRIS WARREN M
IPC: C22C14/00
Filed: 1990-04-19
Abstract: A titanium-base alloy characterized by a combination of good oxidation resistance at temperatures of at least 1500°F and good cold rollability. The alloy consists essentially of, in weight percent, molybdenum 14 to 20, niobium 1.5 to 5.5, silicon 0.15 to 0.55, aluminum up to 3.5, oxygen up to 0.25 and balance titanium. Preferably, molybdenum is 14 to 16, niobium is 2.5 to 3.5, silicon is 0.15 to 0.25, aluminum is 2.5 to 3.5 and oxygen is 0.12 to 0.16. The alloy may be in the form of a cold reduced sheet or foil product having a thickness of less than 0.1 inch. This product may be produced by cold rolling to effect a reduction within the range of 10 to 80%.
Patent CA-2016578-A1 (CA)
Title: Jointing of fabric ends
Inventor: SAYERS IAN C
IPC: B65H69/02
Filed: 1990-05-11
Abstract: A method of  joining the  ends  of a papermakers fabric is disclosed wherein machine direction yarns   are fringed out at the fabric ends, yarn ends being laid across a pinned plate, and yarn ends being cut back so as partially to overlie  the plate.   Those yarns which  extend  across the plate are folded back to form loops beyond the edge of the plate and a thermoplastics matrix material is applied to the plate.  The matrix material is made fluid by heating and,  on  subsequent  cooling,  forms  an  apertured  end  to the fabric which presents side-by-side, outwardly extending loops.   The  loops  at the respective fabric ends may be interdigitated  to  receive  a  pintle wire,  thus  to bring the fabric into endless form.         A variation of  the method is disclosed wherein a  reticulate,  premoulded  seam  element  is  engaged  with the pinned plate for attachment to machine direction yarns of the fabric on melting of the matrix material, the seam element including axially aligned tunnels at a free edge thereof  for  cooperation  with  similar  formations  at  an opposed fabric end and to receive a pintle wire.
Patent CA-2016780-A1 (CA)
Inventor: BEIER SYBILLE
IPC: C07J21/00
Filed: 1990-05-15
Abstract: Dihydrospirorenone, (see formula I) preferably together with an estrogen, can be used for the production of a pharmaceutical agent suitable for treatment of hormonal irregularities during premenopause (menstruation stabilization), for hormonal substitution therapy during menopause, for treatment of androgen-induced disorders and/or for contraception.
Patent CA-2017309-A1 (CA)
Title: Curler
Inventor: HAUPT MANFRED
IPC: A45D2/22
Filed: 1990-05-22
Abstract: Abstract A curler with a roller to roll up a hair curl and with an enveloping body that can be placed on the roller.  The enveloping body has inside dimensions which are larger than the outside dimensions of the roller by an extent sufficient to form an interspace between them to receive hair to be curled.  The roller and the enveloping body can be tightly connected to one another.  The enveloping body is provided with an intake and an outlet connection for the treatment agent, these connections leading from the interspace between the roller and the enveloping body to the outside. The enveloping body is also provided with a slit for the hair curl which leads from the interspace to the outside.  In order to enable the hair to be rolled up as close to the scalp as possible after being initially wrapped upon the roller by hand, and end of the roller is provided with a handle by which the roller can be turned further prior to tightly sealing the curler.  In accordance with the preferred embodiment, the handle is of a blade-like shape and is formed on a sealing cap on one end of the roller.
Patent CA-2019487-A1 (CA)
Inventor: VANASCHEN LUC
IPC: C03B27/044
Filed: 1990-06-21
Abstract: A device for tempering of a glazing by contact has two cooled compression plates and a device for cooling the peripheral surface of the glazing by air jets. The device intended to cool peripheral surfaces of the glazing consists of parallelepipedic blowing ramps placed between cooling and compression plates and in which are provided slots for the cooling air jets directed toward the peripheral surface of the glazing, and exhaust openings placed between the slots. The slots have a diameter at least equal to 1 mm and at most equal to the thickness of the glazings, and the exhaust openings having a cross section which is at least three times that of slots. The dimensions of the cooling and compression plates, as well as arrangement and/or width (B) of the ramps are such that a distance (A) between the orifices of outlet slots and peripheral surface of glazing which is opposite to it is at least two times and at most six times the diameter of the slots.
Patent CA-2020558-A1 (CA)
Inventor: EVANS SAMUEL
IPC: C10M141/08
Filed: 1990-07-05
Abstract: Lubricants can be stabilized against oxidation by the addition of a) a sterically hindered amine and b) a phenol of formula I   (see formula I) wherein A, B and X are as defined in claim 1. It is preferred to use phenols of formula I which contain a thioether group.
Patent CA-2021747-A1 (CA)
Inventor: ONG BENG S
IPC: G03G9/08
Filed: 1990-07-23
Abstract: An encapsulated toner composition comprised of a core comprised of pigments or dyes and a polysiloxane incorporated core binder resin, which core is encapsulated in a shell and wherein the polysiloxane-incorporated core binder resin is comprised of a copolymer derived from functionalized polysiloxanes capable of undergoing addition polymerization, and a monomer; and wherein the shell is selected from the group consisting of polyurea, polyamide, polyester, polyurethane and a mixture thereof.
Patent CA-2022653-A1 (CA)
Inventor: DOI KENICHI
IPC: B41N3/08
Filed: 1990-08-03
Abstract: ABSTRACT OF THE DISCLOSURE A dampening solution composition for lithographic printing, which comprises (a) water, and (b) a compound (A) represented by the following formula (I).                      (I) wherein R represents a methyl group, an ethyl group, an n-propyl group or an isopropyl group, and n represents an integer of 1 to 4, is disclosed.
Patent CA-2025823-A1 (CA)
Inventor: PARENT JEAN-CLAUDE
IPC: C01B33/04
Filed: 1990-09-20
Abstract: "PROCEDE DE PREPARATION DE DISILANE"            La Société dite : L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET                   L'EXPLOITATION DES PROCEDES GEORGES CLAUDE                                  ABREGE Procédé de préparation de disilane, du genre où un gaz brut incorporant du monosilane, du disilane, du trisilane et des impuretés telles  que  phosphine,  hydrogène  sulfuré,   arsine,  disiloxane  et siloxanes  supérieurs,  est  soumis  à  une  étape  de  séparation  par distillation pour l'élimination substantielle des autres composés du silicium, à l'exception du disiloxane, et l'élimination substantielle des impuretés phosphine, hydrogène sulfuré et arsine, caractérisé en ce qu'on procède à une épuration finale du disilane par adsorption sélective sur tamis moléculaires, dont l'un est un tamis du type 3 A pour l'élimination des siloxanes et de l'hydrogène sulfuré et l'autre un tamis du type 4 A pour l'élimination de la phosphine et de l'arsine.
Patent CA-2026264-A1 (CA)
Title: Test to determine an organism's species and/or population identity by direct nucleotide sequence analysis of defined segments of its genome
Inventor: DAVIDSON WILLIAM S
IPC: C12Q1/68
Filed: 1990-09-26
Abstract: ABSTRACT OF THE DISCLOSURE      A method is provided for the determination of the species identity of an organism (sample) and/or the population identity of that organism.  The method comprises the steps of:  isolating DNA from the sample; amplifying a defined segment of the DNA; determining the DNA sequence of the amplified segment; and comparing that DNA sequence with a data base of DNA sequences from known species.  A kit is also provided comprising a carrier including at least one container containing DNA from a defined organism; an amplified segment of the DNA from the defined organism; and DNA sequences for a plurality of species or DNA derived therefrom.
Patent CA-2027859-A1 (CA)
Title: Method of maintaining the force of a stripper blade on an extruder feed roller constant and an apparatus therefor
Inventor: CAPELLE GERD
IPC: B29C48/92
Filed: 1990-10-17
Abstract: -16-ABSTRACT A METHOD OF MAINTAINING THE FORCE OF A STRIPPER BLADE ON AN EXTRUDER FEED ROLLER CONSTANT AND AN APPARATUS THEREFOR In an extrusion device of the type which has a screw rotating in a housing and Which has a feed section in which a feed roller, cooperating with the screw, is provided, a stripper blade is used to remove the fed material from the feed roller. The present invention provides a method and an apparatus for maintaining the net force acting on the stripper blade to direct it towards the feed roller constant. To achieve this, the force of the fed material which acts in a direction tending to move the feed roller and the extrusion screw apart is measured. An opposing force is applied to the stripper blade in dependence upon the magnitude of the measured force. By so doing, the net force directing the stripper blade towards the feed roller is maintained constant.
Patent CA-2028516-A1 (CA)
Title: Releasable well tool stabilizer
Inventor: COGNEVICH MICHAEL L
IPC: E21B31/00
Filed: 1990-10-25
Abstract: RELEASABLE WELL TOOL STABILIZER                  ABSTRACT OF THE DISCLOSURE         A mechanism for accurately positioning a well tool in axially concentric relationship to a well conduit comprises a housing having a plurality of stabilizer linkages mounted thereon with one end of each linkage being pivotally secured to the housing and the other end free to move in an axial direc-tion. A compression spring engages a force transmitting con-nection to the other ends of the stabilizer linkages to bias same to a radially expanded position engaging the conduit wall.          The connection between the compression spring and the stabilizer linkage includes two telescopically related sleeve elements which are secured together by a shear screw.  In the event that the stabilizer linkage becomes stuck in the well, upward jarring movements of the housing will shear the shear screw and permit the stabilizer linkages to collapse radially inwardly and thus permit removal from the well.
Patent CA-2028798-A1 (CA)
Title: Benzylpyrrolidine derivatives as dopamine agonists
Inventor: FISHER LAWRENCE E
IPC: A61P15/00
Filed: 1990-10-29
Abstract: ABSTRACT OF THE DISCLOSURE      Dopamine agonist compounds disclosed are useful in treating hypertension and congestive heart failure in mammals.  The compounds have the following general formula (I)   (I) wherein:      R is hydrogen or lower alkyl; each Rl is independently hydrogen,   or halo;            R2 is lower alkyl or optionally substituted phenyl; m is an integer of 0, 1, 2, 3, 4, 5, or 6; and n is an integer of from 1 to 10; or a pharmaceutically acceptable salt, (R) or (S) stereoisomers, or racemic or non-racemic mixtures thereof.
Patent CA-2028954-A1 (CA)
Title: Process for preparing monohydrate 7-(d-2amino-2-phenylacetamido)-3-cefem-4-carboxylic acid and intermediate formed in the process
Inventor: AMBROSINI LEONARDO
IPC: A61P31/04
Filed: 1990-11-01
Abstract: ABSTRACT            PROCESS FOR PREPARING MONOHYDRATE 7-(D-2-AMINO-2-PHENYLACETA-MIDO)-3-CEFEM-4-CARBOXYLIC ACID AND INTERMEDIATE FORMED IN THE PROCESS.     Process for preparing monhydrate 7-(D-2-amino-2-phenyl-acetamido)-3-chloro-3-cefem-4-carboxilic acid, comprising the condensation between silanized 7-amino-3-chloro-cephalospora-nic acid and D(-)-phenylglycine chloride hydrochloride in the presence of a proton acceptor,  such condensation yields a product which precipitates in form of solvate  of aceto-nitrile, from which the final product is obtained by known techniques, said process allowing to obtain higher yields and a purer product.
Patent CA-2029162-A1 (CA)
Title: Gamma camera equipee d'un cone stenope pour une acquisition de type photographique
IPC: G01T1/164
Filed: 1990-11-01
Abstract: ABREGE     GAMMA CAMERA EQUIPEE D'UN CONE STENOPE POUR UNE            ACQUISITION DE TYPE PHOTOGRAPHIQUE    La gamma  caméra équipée  d'un cône  sténopé  selon l'invention,    pour    une    acquisition    de    type photographique, c'est  à dire où un  trou formé dans  un embout tungstène au sommet d'un tronc de cône, permet de former à  partir du  rayonnement gamma  émis, une  image ponctuelle de l'objet à observer transmise agrandie à la face d'entrée du scintillateur,  est telle que le  tronc de  cône  est  modulaire  :  le  cône  sténopé  comporte principalement une embase (20), un premier tronc de cône (32) d'épaisseur adaptée au blocage du rayonnement gamma de basse  énergie,  et  un second  tronc  de  cône  (33) éventuellement superposable au premier, l'ensemble ayant alors une épaisseur  adaptée au  blocage du  rayonnement gamma de haute énergie.          Figure 2.
Patent CA-2030844-A1 (CA)
Title: System for spacing a shingled stream of workpieces into a stream of seriatim imbricated groups
Inventor: ACHELPOHL FRITZ
IPC: B65H29/66
Filed: 1990-11-26
Abstract: An apparatus for dividing a continuously conveyed stream of shingled workpieces, such as bags or sacks, into leading and trailing parts has two consecutive endless belt conveyors.  The downstream second belt conveyor is driven, during a dividing operation, at a higher velocity than the first upstream conveyor in order to pull the shingled stream apart.  After the stream has been divided into the leading and trailing parts the second conveyor is driven at the same velocity as the first conveyor.  To provide separation of the stream into parts consisting of an exactly predetermined number of workpieces, an intermediate endless belt conveyor is provided, which extends parallel to the trailing portion of the second belt conveyor and during the dividing operation revolves at a lower velocity than the second belt conveyor.  The intermediate conveyor is provided with cams for arresting the leading workpiece of the trailing part of the shingled stream, against an upper pressure belt.
Patent CA-2031520-A1 (CA)
Title: Cytochalasin compositions and therapeutic methods
Inventor: FONDY THOMAS P
IPC: C07D491/10
Filed: 1990-04-27
Abstract: ABSTRACT OF THE DISCLOSURE            The present invention is directed to naturally occurring and synthetic cytochalasin compositions and therapeutic treatments utilizing these compositions.  More specifically, the present invention relates to certain synthetic analogues of Cytochalasin B (CB) and sustained release formulations containing a cyctochalasin,  for example, cytochalasin B and other natural cytochalasins, for example, Cytochalasin D, E, H or J, among others and one or more of its synthetic analogues.  This invention also relates to the surprising discovery that the administration of cytochalasins including CB produces transient immunosuppression which is controllable by dose or route of administration and is reversible spontaneously or with the use of IL-2.  Thus, a therapeutic regimen of cytochalasins may be used to treat the undesirable hyperimmunity of transplant patients and patients with autoimmune disease.   In addition, anti-tumor therapy utilizing CB and other cytoshalasins,  and optionally antineoplastic agents other than cytochalasins may be signifantly enhanced by combining the administration of these agents with effective amounts of IL-2 or other lymphokines for reversing the immunosuppression produced during administration of cytochalasins with other antineoplastic agents.  This invention also relates to sustained release formulations utilizing liposomes of microcapsules which are effective for delivering high concentrations of cytochalasins and optionally, additional antineoplastic agents to the active site of the tumor without producing undesirable immunosuppression.
Patent CA-2035703-A1 (CA)
Title: System and method for determining and printing airborne particle concentration
Inventor: LILIENFELD PEDRO
IPC: G01N21/53
Filed: 1991-02-05
Abstract: ABSTRACT         A system and method for determining and printing airborne particle concentration including, inter alia, a real time particle monitor having, a particle counting means, a display means, a keyboard means, a printout and/or other output means, and a processing means to control the interaction of the various electronic components and to perform necessary calculations.         The system allows a user to select a fixed time period or a fixed precision mode of operation for the particle monitor.          When the system is in the fixed time period mode and a normal particle count is detected, the system advances to a routine to determine the actual airborne particle concentration and the associated precision of that determination in a normal manner.          When a low particle count is detected, the system advances to a low particle count routine to determine an "upper limit" particle concentration based on Poisson statistics.  At the expiration of the user selected fixed time period, the system prints out either the appropriate upper limit particle concentration or the actual particle concentration and associated precision.         Alternatively, when the system is in the fixed precision mode, the system prints out airborne particle concentration measurements only when such measurements have a user selected fixed precision.  In this mode, the system determines in advance the number of particles needed to be detected to achieve an airborne particle concentration measurement having a precision equivalent to the user selected fixed precision.  The system then waits until the actual particle count is equivalent to the required particle count before printing the airborne particle concentration.         The printed values for airborne particle concentration and precision for either the fixed time period or fixed precision modes represent the current airborne concentration since the last printout.  The system also displays on a LCD screen the total particle count since commencement of monitoring as well as the time weighted average airborne particle concentration and precision, or upper limit airborne particle concentration, since commencement of monitoring.  The combination of LCD and printout data presentation provides an all encompassing and versatile presentation of information on airborne particle concentration.
Patent CA-2036483-A1 (CA)
Inventor: DURAIRAJ BOJAYAN
IPC: C08L61/04
Filed: 1991-02-15
Abstract: An improved vulcanizable rubber composition of the type comprising (I) a rubber component selected from natural rubber, synthetic rubber or combinations thereof, and (II) a methylene donor compound which generates formaldehyde upon heating, and (III) a phenolic novolak resin type methylene acceptor compound is disclosed. The improvement comprises having at least ten mole percent of the phenolic groups of the phenolic novolak resin aralkylated with one or more compounds selected from the group consisting of styrene, alpha methyl styrene, beta methyl styrene, p-methyl styrene, alpha chloro styrene and vinyl naphthalenes.