baber/WOPTO huggingface dataset:
Patent CA-2007775-A1 (CA)
Title: Separation of 1,2-dihydroxycyclohexa-3,5-diene compounds
Inventor: HERBERT ANDREW B
IPC: C07F5/02
Filed: 1990-01-15
Abstract: Abstract Separation of 1, 2,-dihydroxycyclohexa-3,5diene compounds A process for the separation of a compound comprising a 1,2-dihydroxycyclohexa-3,5-diene ring from a medium containing it in which the compound reacts with phenylboronate ion to form a phenylboronate ester which is insoluble in the medium.  Novel phenylboronate esters formed during the separation process are also claimed.
Patent CA-2007882-A1 (CA)
Title: Flame-resistant carrier web for bitumen webs and a process for its production
Inventor: HEIDEL PETER
IPC: D04H1/64
Filed: 1990-01-16
Abstract: Abstract of the disclosures   HOE 89/F 012 Flame-resistant  carrier web  for bitumen webs  and a process for its production A carrier web of a sheet-like fiber material consisting of a glass fiber mat and a mat of synthetic fibers, which and are needled  together and are end-consolidated with a  polymer-free  low-formaldehyde  melamine-formaldehyde precondensate,  and a process for its preparation are described.            The carrier web is preferably end-consolidated with a melamine-formaldehyde  precondensate  which  is partly etherified and/or sulfamate-modified.
Patent CA-2009159-A1 (CA)
Title: Method and apparatus for improvement of bone healing
Inventor: KENNA ROBERT V
IPC: A61B17/58
Filed: 1990-02-02
Abstract: P.C. 7548 METHOD AND APPARATUS FOR IMPROVEMENT OF BONE HEALING                             Abstract A method and apparatus 10 are provided for improving bone ingrowth into prostheses and for stimulating living bone attachment onto prostheses and for bone healing in general wherever two bone surfaces are to be joined, for example in fractures and in osteotomies.  Bone particles are sprayed under particular conditions and with a particular device 10 onto the two surfaces to be joined.  The device 10 provides a fine and controlled spray of bone particles when the device is activated, without waste of valuable bone and without clogging of the gun 10 by relatively sticky and moist bone particles.
Patent CA-2009801-A1 (CA)
Inventor: BOCK JAN
IPC: C02F11/12
Filed: 1990-02-12
Abstract: ABSTRACT OF THE DISCLOSURE          The present invention relates to a method for separating water and oil from a sludge which contains water,  oil and solids which method com-prises 1)  contacting the sludge with an effective amount of 1 or more surfactants chosen and balanced to form certain types of microemulsions with equal volumes of decane and 3% aqueous NaCl,  2)  mixing said surfactants and sludge with sufficient agita-tion to obtain a uniform mixture, 3) allowing said mixture to stand under gravitational  settling or centrifugation to obtain the separation from the bottom  sediment  of  an  aqueous phase  which  may contain solubilized oil with or without an addi-tional floating oil phase, 4) decanting separately the oil and aqueous phases and 5) further treating the aqueous phase with heat and/or NaCl to separate the solubilized oil or further treating the bottom sediment  with  selected  surfactants  to  release adhering oil.
Patent CA-2010141-A1 (CA)
Title: Compositions comprising polyphenylene ether-polyester copolymers from epoxytriazine-capped polyphenylene ethers
Inventor: BROWN STERLING B
IPC: C08L71/12
Filed: 1990-02-15
Abstract: CIP of RD-18777 COMPOSITIONS COMPRISING POLYPHENYLENE    ETHER-POLYESTER COPOLYMERS FROM EPOXYTRIAZINE-CAPPED POLYPHENYLENE ETHERS      Abstract Copolymer-containing compositions are prepared by the reaction of an epoxytriazine-capped polyphenylene ether with another polymer containing carboxy end groups, especially a polyester.  The compositions have excellent properties and find utility as molding compositions and as compatibilizers for blends of similar polymers.  Suitable epoxytriazine-capped polyphenylene ethers may be prepared by reaction of a polyphenylene ether with an epoxychlorotriazine such as diglycidyl chlorocyanurate, n-butyl glycidyl chlorocyanurate or mesityl glycidyl chlorocyanurate.
Patent CA-2010170-A1 (CA)
Title: Semi-conducting oligomers and method relating thereto
Inventor: ALBARELLA JAMES P
IPC: H01B1/12
Filed: 1990-02-15
Abstract: ABSTRACT OF THE INVENTION The present invention relates to a number of innovative electrophilic substitution reactions involving 2,5-dithienylpyrrole (2,5-DTP). More specifically, these reactions are used in the synthe-sis of monomers for preparing functionalized conduct-ing organic polymers. The electrophilic substitution reactions in this invention are accomplished under conditions not requiring the use of N-1 pyrrole blocking groups to direct reaction at the pyrrole C-3 position. This is because the steric bulk of the 2,5-dithienyl groups prevent N-acylation and therefore direct reactions with electrophiles at the pyrrole C-3 position. The reaction conditions chosen have also demon-strated a greater regioselectivity towards function-alization at the pyrrole 3-position than the basic reaction conditions suggested in the prior art. This result may be explained by an activation of the pyrrole 3-position towards electrophilic substitution. This is attributed to an electron donating resonance contribution of the 2,5 thienyl groups. Other advantageous reaction conditions have been discovered which direct electrophilic substitution preferentially at the pyrrole or thiophene groups depending upon the amount of acidic catalyst. MS-1562
Patent CA-2011900-A1 (CA)
Inventor: KALAN BRIAN A
IPC: B66C13/48
Filed: 1990-03-09
Abstract: An improved bridge crane electric motor control system is disclosed, wherein a computer, a programmable controller, is employed to not only control the application of electrical energy to the motors of a bridge crane but also to count and store the instances of overload and of use. The controller is operated in accordance with a computer program which is disclosed and information relating to use is accessible by maintenance workers who may read out the amount of use and abuse of the crane and its motors and take corrective steps. The system provides greater security against unauthorized modification in the field by the operators and employs fewer and more reliable parts than previous such systems.
Patent CA-2015005-A1 (CA)
Title: Stripping of residues
Inventor: BONISCH ULRICH
IPC: C10G1/00
Filed: 1990-04-20
Abstract: STRIPPING OF RESIDUES          Abstract According to the present invention, the hydrogenation residues are processed during hydrogenation of coal, heavy oil or bitumen with process-specific, hydrogenous gases, whereby the partial pressure change in the steam required for separating the products is not produced by the generated vacuum as in the vacuum column, rather is produced by the gas used.
Patent CA-2015941-A1 (CA)
Title: Method of forming agglutinates in blood samples
Inventor: KESSLER MARSHA A
IPC: G01N33/80
Filed: 1990-05-02
Abstract: (1035-124) ABSTRACT OF THE DISCLOSURE    The type of a blood specimen is determined by adding a portion thereof, either a diluted solution of its red cells or a portion of its plasma, to each of a multiplicity of wells in a transparent tray, by adding a blood type specific reagent to each of the wells in the trait, different reagents being added to different ones of the wells of the tray, periodically tilting the tray at a substantial angle of at least approximately 50° to opposite sides of a horizontal position to enhance any agglutination reaction which may be developing within any of the wells of the tray as a result of a match between the reagent and a blood type characteristic antigen or antibody in the portion of the blood specimen, and sensing each of the wells of the tray for the presence of an agglutinate therein by directing a light source through the wells, preferably from below the tray, a well with  an agglutinate therein allowing more light from the light source to pass through the center thereof than a well without such an agglutinate therein.  The agglutination enhancement technique of such blood specimen typing method is also applicable to other blood testing methods which rely on an agglutination reaction.
Patent CA-2016997-A1 (CA)
Title: Soil release polymers having improved performance, stability and economy
Inventor: SONENSTEIN GERARD G
IPC: C11D3/00
Filed: 1990-05-17
Abstract: Abstract Of The Disclosure A soil release promoting copolymer of poly(ethylene terephthalate/ethylene isophthalate) and poly(oxyethylene terephthalate/oxyethylene isophthalate) having a weight average molecular weight in the range of 6,000 to 40,000 is prepared by reacting an ethylene terephthalate/ethylene isophthalate copolymer with polyethylene glycol in the presence of a transesterification catalyst.  The soil release promoting copolymer provides improved soil release properties for oil and greasy stains on polyester fabrics at high and low wash temperatures, is stable even at high alkalinity levels, and can be used at lower loadings than conventional soil release polymers without loss of efficacy.
Patent CA-2019306-A1 (CA)
Inventor: THIEBAUT GEORGES
IPC: H04L12/54
Filed: 1990-06-19
Abstract: This method comprises the use of a memory in which to each virtual circuit is allocated a context (CT) defining the conditions for evaluating the bit rate of this virtual circuit, the reading, upon the reception of a cell, of the context of the virtual circuit, the use of a clock set aside in order to supply a current time associated with this virtual circuit, and of bit rate measuring means supplying, upon the arrival of a cell, a measurement of bit rate of the virtual circuit of this cell. 
<??>The context (CT) comprises at least one bit rate threshold and there is provision for comparing such a bit rate measurement with this threshold and for actuating a counter of crossovers, in a first direction, if this threshold is reached or crossed, or in another direction, if this threshold is not reached, as well as for determining whether such an actuation has brought the counter of crossovers into an extreme position of the said first direction, and for then supplying a signal (OSC) indicating the need for a corrective action. 
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Patent CA-2022166-A1 (CA)
Title: Medicament vial end cap membrane piercing device
Inventor: GILBERT MICHAEL D
IPC: A61M5/32
Filed: 1990-07-27
Abstract: ABSTRACT A  spear-like  device  for puncturing  the membrane  or diaphragm stopper of a liquid medicament vial.  The spear-like device includes a fluid supply port from which liquid can be d e l i v e r e d  t o    a    h o o d e d    n e e d l e .
Patent CA-2022966-A1 (CA)
Inventor: PUTNEY GORDON A
IPC: B25B13/46
Filed: 1990-08-09
Abstract: The tool includes a housing having two substantially semi-cylindrical members.  An air motor in the housing has motor end members located adjacent each end thereof.  Two O-rings, respectively disposed between the motor and the end members, are squeezable axially so as to be forced radially outwardly to abut the housing.  A manifold includes a chamber of a size that dampens Helmholtz frequencies in the exhaust air.  A bearing block includes an outer surface configured to transfer operating loads from a crank shaft extending through the bearing block to the housing.  Each of the members of the housing has an arm with a cylindrical opening for receiving a rotatable drive body.  The drive body has a knob including a shaft having an ear cooperating with an O-ring in the drive body for preventing the knob from inadvertently rotating between operating positions while the tool is in use.  An O-ring between the knob and the drive body isolates the housing from shock to the knob resulting when the tool is dropped.  A bushing disposed within the opening of one of the arms includes an outer surface having a plurality of serrations to provide a secure fit between the bushing and the arm.  A washer and a retaining ring are located adjacent the bushing.  A spring is located between the bushing and the retaining ring for biasing the drive body against the arm to provide friction between the drive body and the arm.  An elastomeric jacket surrounds the housing.
Patent CA-2023206-A1 (CA)
Title: Method for increasing salivation for xerostomia patients
Inventor: CORSELLO VINCENT
IPC: A23G4/00
Filed: 1990-08-13
Abstract: P7184SOl/9 ABSTRACT OF THE DISCLOSURE A method for treating xerostomia which comprises chewing gum or candy containing from 4 to 70 weight percent xylitol therein.
Patent CA-2028324-A1 (CA)
Title: Method for the solvent extraction of zinc
Inventor: BOATENG DANIEL A D
IPC: C22B19/20
Filed: 1990-10-23
Abstract: Zinc is selectively extracted from zinc sulfate solutions that may also contain sulfuric acid and amounts of other metals with an organic extractant mixture containing both organic substituted phosphoric acid and organic substituted thiophosphinic acid. The phosphoric acids are preferably chosen from mono- and di-2-ethylhexylphosphoric acids and mixtures thereof, and the,phosphinic acids are preferably chosen from bis- 2, 4, 4-trimethylpentyl mono- and di-thiophosphinic acids. The use of an extractant mixture of the dithiophosphinic acid with mono- and di-2-ethylhexyl phosphoric acids or an extractant mixture of the dithiophosphinic acid with di-2-ethylhexylphosphoric acid is preferred. The pH during zinc extraction is controlled at a value in the range of about 1.3 to 5. Control of pH is carried out either by neutralization or by acid extraction with an organic amine-type~extractant. The acid content of the feed solution may be reduced by neutralization or acid removal by dialysis. The solvent extraction of zinc or zinc and acid from feed solution may be carried out co-, counter- or cross-currently in one or more stages. The preferred extraction method is dual-circuit, side-by-side, simultaneous zinc and acid extraction. The use of the mixed extractant for zinc is more effective than extraction with the component extractants by themselves.
Patent CA-2028601-A1 (CA)
IPC: G03G5/14
Filed: 1990-10-25
Abstract: An   electrophotographic   photosensitive element having a layer containing polyvinyl acetal, wherein the layer is formed by coating a coating composition  containing  the  polyvinyl  acetal  and being  compounded with  a  solution  comprising  an acetylacetone complex salt, an alcohol and water, and a process of producing an electrophotographic photosensitive element having a layer containing polyvinyl acetal, wherein the layer is provided by the steps of: preparing (A) a solution of an acetylacetone complex salt dissolved in a mixed solvent of an alcohol and water, and (B) a solution containing polyvinyl acetal; mixing the solutions (A) and (B) to provide a coating composition (C); coating  the  coating  composition  (C)  on  a constituting layer or a conductive substrate; and drying.
Patent CA-2028715-A1 (CA)
Title: A method of producing panels
Inventor: COLOMBO GIAN C
IPC: B29C48/64
Filed: 1990-10-29
Abstract: Remoldable panels consisting essentially of a high melting high tenacity thermoplastic polymer and a thermosensitive organic filler are produced by forming a mixture of polymer and filler, extruding the mixture to form a web and calendering the web prior to its solidification; the mixture is formed and extruded in a single step by feeding the polymer and the thermosensitive filler into an integral mixing and extruding space that has a feeding end and an extrusion end and comprises:a pair of co-rotating parallel elongated elements each having a length extending between the feeding end and the extrusion end of the integral space; at least three feedingly effective helical extrusion sections mutually distanced along the length of the elements; at least two essentially non-feeding kneading sections each of which is positioned between adjacent extrusion sections; the kneading sections and the extrusion sections of the elements are provided at adjacent positions along their length to form at least two kneading zones and at least three extrusion zones so as to provide one kneading zone between adjacent extrusion zones in the integral space; the polymer is introduced into the integral space in the area of a first extrusion zone located near the feeding end while the thermosensitive filler is introduced in the area of a second extrusion zone situated closer to the extrusion end than the first extrusion zone. A venting means is connected to the extrusion zone nearest the extrusion end.
Patent CA-2030220-A1 (CA)
Title: Liquid electrophotographic toner
Inventor: ELMASRY MOHAMED A
IPC: G03G9/13
Filed: 1990-11-19
Abstract: LIQUID ELECTROPHOTOGRAPHIC TONER                      ABSTRACT OF DISCLOSURE           Liquid toners for developing electrophotographic images contain dispersed toner particles which are based on a polymer with multiple characteristics. These particles comprise a thermoplastic resinous core with a Tg below room temperature which is chemically anchored to an amphipathic copolymer steric stabilizer containing covalently attached groups of organic acid containing moieties having pKa's less than 4.5 which in turn are chemically bonded to metal soap containing compounds derived from organic acids having a pKa greater than 4.5.  The toner particles so formed have advantageous properties of high charge/mass, and good charge and dispersion stability.
Patent CA-2032788-A1 (CA)
Title: Adaptive autopilot
Inventor: GIDO JOSEPH F
IPC: G05B13/04
Filed: 1990-12-20
Abstract: ABSTRACT OF THE DISCLOSURE      A control system for the reentry phase of a reentry type vehicle with the vehicle having aerodynamic control surfaces for controlling the attitude of the vehicle during reentry includes an estimating device, such as an extended Kalman filter, for estimating dynamic aerodynamic operational parameters of the vehicle in response to status parameters of the vehicle, a sensing device for supplying the status parameters, an autopilot device for generating a drive command signal in response to the dynamic aerodynamic operational parameters and an actuator device, which may include an electric motor or smaller hydraulic one than prior systems,  for controlling the aerodynamic control surfaces in response to the drive command signal.   Computation necessary for estimating is used to determine a more accurate drive command signal than is typically available from prior systems, thereby permitting a smaller, lighter weight actuator to be used.  If the operating characteristics of the vehicle over the entire flight regime are known, then the status parameters may be used to select the appropriate operating characteristics, which have been previously stored, without need to resort to estimation.
Patent CA-2034037-A1 (CA)
Inventor: DALIN IVAN
IPC: B01D53/34
Filed: 1991-01-11
Abstract: A  method  of  maintaining  a given content of a substance A in an  aqueous solution  where it  is continuously consumed and  where the  redox potential E, at least within the range of  concentration  used,  approximately satisfies the equation:       E = G + F(x) wherein x  is the  content of A, F is a function of x whose derivative dF/dx approaches  zero  when  x  assumes  a high value,  and  G  on  the  whole  is  independent of x but is influenced by other parameters, such as  pH, temperature or the like.  The addition  of A  is controlled in such manner that a set value of the redox potential  is maintained. The set  value  is  determined  by increasing or decreasing the addition of A  in  a  predetermined  manner,  whereupon the redox  potential  is  measured,  and  the measured value is used for determining the set value.
Patent CA-2035057-A1 (CA)
Title: Polyphenylene sulfide resin composition
Inventor: HANAYAMA KYOKO
IPC: C08L77/06
Filed: 1991-01-28
Abstract: POLYPHENYLENE SULFIDE RESIN COMPOSITION            ABSTRACT OF THE DISCLOSURE:       The crystallization behavior of polyphenylene sulfide materials is modified by incorporation of a specific class of polyamide.  There is provided a polyphenylene sulfide resin composition comprising 61 - 99.9% by weight of a polyphenylene sulfide material and 0.1 - 39% by weight of a tetramethylene adipamide-based polyamide material. The composition is characterized by increased melt-crystallization temperature which enables the molding or shaping cycle time to be significantly reduced.
Patent CA-2035899-A1 (CA)
Inventor: SHIVELY JOHN E
IPC: C07H21/04
Filed: 1990-07-19
Abstract: A chimeric anti-CEA antibody comparable to ATCC Accession No. BH 8747 is described.
Patent CA-2039161-A1 (CA)
Inventor: FUNAKI KEISUKE
IPC: G11B5/73
Filed: 1990-08-30
Abstract: ABSTRACT OF DISCLOSURE     A magnetic recording medium having a magnetic layer on at least one side of a base film which is a stretched film of styrene polymer having a high degree of syndiotactic configuration or a composition thereof or a laminate film containing the stretched film, wherein linear expansion coefficient is not more than 5 x 10-5/°C and static friction coefficient is not less than 0.3 and not more than 1.0 is disclosed.     The magnetic recording medium has good sliding properties, smoothness, heat resistance and moisture resistance, is excellent in dimensional stability to temperature and moisture, and has good coersive force, thus can be highly densified.
Patent CA-2040448-A1 (CA)
Inventor: MORIN JEAN
IPC: A01G13/00
Filed: 1991-04-15
Abstract: PAILLIS PROTECTEUR DE PLANTATION La présente invention se rapporte à un protecteur d'arbres ou paillis du type comprenant un collier pour arbres ou autres plantations, comprenant généralement une surface plane ayant une première ouverture généralement au centre de la surface plane et une seconde ouverture s'étendant entre la première ouverture et la périphérie de la surface plane. Ce paillis est utilisé pour limiter ou contrôler la végétation envahissante sur les zones à reboiser.
Patent CA-2041203-A1 (CA)
Inventor: FELL MICHAEL J
IPC: B67D7/56
Filed: 1991-04-25
Abstract: A message display boot is provided for a fuel dispensing nozzle.  The display boot comprises a flexible plastic boot in close conforming fit over at least the front valve housing of the nozzle.  At the top of the boot in a message platform upon which rests a message placard.  The placard is removable held on the platform by an optically clear skirted cover conforming to the contour of the platform, such that the cover is held on the platform by the close conforming  fit  of  the  skirt  along  the  sides  of  the platform,  but can be easily pried off the platform to change the placard.  A bellow portion at the bottom of the boot provides a conforming fit over nozzles of various height.  A resilient bumper shields the message platform and cover from contact with the vehicle.   In a preferred embodiment,  the boot,  platform,  bellows and bumper are integrally molded of plastisol vinyl.
Patent CA-2044622-A1 (CA)
Inventor: JOHNSON JAMES E
IPC: H01T13/46
Filed: 1990-10-13
Abstract: Spark plug for an internal combustion engine having a metal shell (20) enclosing a ceramic insulator (16) containing a conductive centre electrode (18) having a bottom end (58) exiting from the insulator. The bottom end of the centre electrode is spaced apart from a groud electrode ( 12) attached to the metal shell by at least one support member or mounting post (38) . The ground electrode is ring/openring shaped and its interior diameter ranges from equal to the exterior diameter of the centre electrode to a multiple of the size of the interior diameter of the centre electrode.  Fig. 1