baber/WOPTO huggingface dataset:
Patent FI-98631-C (FI)
Inventor: JANSSEN ROBERT A
IPC: C08J7/12
Filed: 1990-01-10
Granted: 1997-07-25
Abstract: A process for modifying the surface characteristics of a preformed polymeric substrate to impart hydrophilicity, hydrophobicity or other desired properties thereto comprises peroxidizing and hydroperoxidizing the surface of said preformed substrate using ozone, directing the subsequent graft polymerization of selected ethylenically unsaturated monomers essentially solely to the surface of said substrate to achieve the desired alteration of substrate surface characteristics while maintaining substrate structural integrity. Substrates so modified are useful in biomedical devices, semipermeable membranes, films, fibers and especially contact lenses.
Patent FI-97834-C (FI)
Inventor: BENJAMINSSON ERLAND
IPC: H02G15/04
Filed: 1990-05-17
Granted: 1997-02-25
Abstract: End cover intended for use for protection of the end (10) of a cable, a tube or the like against damp. The end cover includes in combination a covering sleeve (12) of a resistant material and a sealing hood (22) in the form of an elastic sealing element, which can be rolled out from said tapering part. The covering sleeve (12) is provided with a cavity (14) adapted to respective end and has a tapering part facing away from the cavity side. The sealing element (22) is in mounted state of the end cover intended to seal and surround both a part of the cover sleeve (12) and a part of said end (10).
Patent NO-152561-C (NO)
Inventor: KJELLIN PER GUNNAR
IPC: C07D473/06
Filed: 1979-10-19
Abstract: 3-Alkylxanthines characterized by the formula 
<CHEM>
 wherein R<1> is n-propyl, n-butyl, isobutyl, n-pentyl, 2-methylbutyl, 3-methylbutyl, 2,2-dimethylpropyl, cyclopropyl, cyclobuty, cyclopentyl of cyclohexylmethyl, and R<2> is hydrogen or methyl, provided that R<2> is methyl when R<1> is n-propyl, n-butyl or isobutyl, or a physiologically acceptable salt thereof, for example the compound 3-cyclopetnyl-3, 7-dihydro-1H-purine-2, 6-dione, have activity against chronic obstructive airway disease or cardiac disease. These compounds are produced by several methods, exemplified by the following one: reacting a compound of the formula 
<CHEM>
 with a compound of the formula
 R<2>-X
 wherein R<1> and R<2> have the definition given above and X is -COOH, -CONH2 or -OC-O-CO-R2 and, if necessary, submitting the obtained product to dehydration. The starting compounds wherein R<1> is n-pentyl, 2-methylbutyl, 3-methylbutyl, 2,2-dimethylpropyl, cyclopropyl, cyclobutyl, cyclopentyl or cylohexylmethyl are not previously described in teh literature They are prepared by reacting a compound of the formula R<1>NHCONH2 with cyanoacetic acid, cyclising the produced 1-cyanoycetyl-3-R<1>urea with alkali, nitrosing the so produced 1-R<1>-6-aminouracil with HNO2 and reducing the so produced 1-R<1>-5-nitroso-6-aminouracil with H2//PtO2.
Patent NO-153495-C (NO)
Inventor: STEINER GERD
IPC: C07D403/04
Filed: 1980-05-09
Abstract: 6-Substituted 11-alkylene-morphanthridines, also referred to as 11-alkylene-dibenzo[b,e]-azepines, their pure cis- and trans-isomers, processes for their preparation, and therapeutic agents containing these compounds, which may be used as drugs, in particular neuroleptics, sedatives, hypnotics, analgesics, antidepressants or agents for treating Parkinson's syndrome.
Patent NO-160474-C (NO)
Inventor: AALBERSE ROBERTUS CAROLUS
IPC: G01N33/537
Filed: 1982-04-30
Abstract: The invention relates to a method for the assay of antibodies to soluble antigens in an aqueous sample, in particular in body fluids, such as blood serum or blood plasma, by contacting said sample with an antigen in vitro, wherein antibodies, if present, are bound by said antigens. The invention furthermore relates to a kit for the assay and detection of antigen-specific antibodies. According to the invention an antigen is used that is modified with a recognizable group, and said modified antigen is soluble in the test sample. The interaction between antigen and antibody takes place in homogeneous solution.
Patent NO-169901-C (NO)
Inventor: KANEKO MASAKATSU
IPC: C07D233/54
Filed: 1986-04-18
Abstract: New griseolic acid derivatives have various groups attached to the sugar part in place of the adenine group of griseolic acid itself. These groups are all purine derivatives or ring-opened purine analogs. The compounds are useful as inhibitors of phosphodiesterases. They may be prepared by replacing the adenine moiety of griseolic acid and/or dihydrodesoxygriseolic acid and/or by replacing other substituent groups.
Patent NO-170093-C (NO)
Inventor: SCHUPPISER JEAN-LUC
IPC: C11D7/44
Filed: 1987-01-29
Abstract: Aqueous acid cleaning compositions well adapted, e.g., for the descaling of metallic face surfaces include (i) water, (ii) a carboxylic acid dissolved therein having a dissociation constant pK, at 25 DEG  C., of at least 2, (iii) a stabilizing amount of at least one salt of an acid having a pK value of at least 2, and of a strong base, and (iv) a thickening amount of a polysaccharide.
Patent NO-175256-C (NO)
Inventor: IWATA MASAYUKI
IPC: C07D215/56
Filed: 1989-07-19
Abstract: Compounds of formula (I): <CHEM> (in which: R<1> represents fluorinated methoxy; R<2> represents a nitrogen-containing heterocyclic group and R<3> represents hydrogen or amino) and pharmaceutically acceptable salts, esters, amides and precursors thereof are valuable antibacterial agents, which may be prepared by reacting a compound similar to that of formula (I) but in which R<2> is replaced by a halogen atom with a compound providing the required group R<2>.
Patent NO-174397-C (NO)
Inventor: REINHOLDSSON BO
IPC: B65G69/10
Filed: 1991-01-23
Abstract: Summarily, the present invention relates to equipment preventing separation in bulk material in connection with transfer and/or transport of such material. The equipment includes at least one compartment or tube (11) which is open straight through and through which the material is caused to flow when it is loaded onto a substructure. Suitably, the material is delimited to what can be likened to pillars, by its being caused to flow through an array of compartments or tubes (14) arranged mutually adjacent.
Patent AU-738844-C (AU)
Title: Method for operating a shearing and compacting press and a shearing and compacting press
Inventor: BEEK AUGUST VAN DER
IPC: B30B9/30
Filed: 1999-01-22
Granted: 2003-01-09
Abstract: The invention relates to a method and to a shearing and compacting press for the production of pressed parts, preferably packages (20) from waste material, especially scrap and sheet clippings. The material used is pre-compacted in a first compacting step. In a second compacting step, the material, which has been pre-compacted to the width of the package, is subjected to intermediate compacting until the height of the package (20) is reached. In a third compacting step, final compacting of the material to the final width or length of the package (20) is carried out. According to the invention, the material is pre-compacted with a continuos force and optionally sheared until the compressor (3.1) reaches its final position. The compressor (3.2) is securely adjusted and guided to its end position on a parallel plane. Subsequently, the compressor (3.3) is guided in a position in which the compressor (3.1) releases the opening of the package chamber (2.3) when the compressor (3.1) is driven back. Finally, the compressor (3.1, 3.2, 3.3) is subjected to a pressure that is lower than the maximum pressure available in the compressors (3.1, 3.2, 3.3) at the beginning of the working and return strokes. The compressor (3.1) is subjected to maximum pressure for shearing and/or the compressors (3.2, 3.3) are supplied with maximum pressure to end pressing. The invention is also characterized in that the pressing pressure for the compressors (3.1, 3.2, 3.3) is gradually controlled depending on the degree of compression or the corresponding length.
Patent CA-2004392-C (CA)
Title: Mixtures of poly(alkylene carbonate) polyols and polymers of ethylenically unsaturated esters
Inventor: PRIER DONALD G
IPC: C08G18/44
Filed: 1989-12-01
Granted: 2000-11-14
Abstract: Modified mixtures of poly(alkylene carbonate) polyols and polymers of certain unsaturated esters are prepared by (A)forming a mixture of a polymer of an ethylenically unsaturated ester and a polyalkylene carbonate polyol and (B)subjecting such mixture to conditions sufficient to induce a transesterification reaction between the polymer of an acrylic ester and a polyalkylene carbonate polyol.
Patent CA-2008657-C (CA)
Title: Bottom end stop for slide fastener
Inventor: KUSAYAMA MASAHIRO
IPC: A44B19/36
Filed: 1990-01-26
Granted: 1994-04-19
Abstract: ABSTRACT OF THE DISCLOSURE        A bottom end stop for a slide fastener is disclosed, which is formed by injection molding of a plastics material into a multi-shape structure designed to eliminate unintentional separation or "chain crack" of the fastener which would otherwise take place at the joint between the end stop and an endmost or terminal one of discrete coupling elements when upwardly directed thrust force is exterted from under the fastener.
Patent CA-2012719-C (CA)
Title: Aqueous colloidal dispersion of fumed silica, acid and stabilizer
Inventor: MOLL WILLIAM F
IPC: D06M11/79
Filed: 1990-03-21
Granted: 1999-06-08
Abstract: An aqueous colloidal dispersion of fumed silica, acid and stabilizer, having a fumed silica concentration of at least about 40% by weight. A process for making an aqueous colloidal dispersion is also disclosed.
Patent CA-2017809-C (CA)
Title: Internal mold release agent for use in polyurea rim systems
Inventor: SANNS FRANK JR
IPC: C08G18/50
Filed: 1990-05-30
Granted: 1999-07-06
Abstract: The present invention is directed to a process for the production of optionally cellular, polyurea elastomer moldings by reacting a reaction mixture containing I) a polyisocyanate, II) a polyether having at least two isocyanate-reactive groups and a molecular weight of 1800 to 12,000 in which at least 50% of the isocyanate-reactive groups are primary and/or secondary amino groups, III) about 5 to 50% by weight, based on the weight of omponent (II) of a chain extender comprising a sterically hindered aromatic diamine and IV)   about 1 to 20% by weight, based on the weight of components (II) and (III) of an active hydrogen-containing fatty acid ester having a molecular weight of about 500 to 5000 and prepared by reacting an alcohol with an aliphatic, saturated or unaturated fatty acid, said ester being characterized in that at least one aliphatic acid which contains more than eight carbon atoms is built into the molecule, said ester further characterized as having an acid number of 0 to 100 and a hydroxyl number of 0 to 150 with at least one of said numbers being greater than 0, wherein the fatty acid ester is initially blended with component (II), component (III) or a mixture thereof and the reaction mixture is processed as a one-shot system by the RIM process at an isocyanate index of about 70 to 130.   The present invention is also directed to an isocyanate-reactive component for use in a RIM process based on components (II), (XII) and (IV).
Patent CA-2019948-C (CA)
Title: Rail securement apparatus
Inventor: KOTECKI MICHAEL R
IPC: E01B9/28
Filed: 1990-06-27
Granted: 1998-08-18
Abstract: A rail securement clip is disclosed as having a base having an opening therethrough  for receiving an anchor projecting from a foundation, a nose extending laterally of the base from the upper portion of the base and overlying the foot of the rail, and a pair of spaced apart fingers affixed to the nose and to an upper portion of the base. The through opening in the base has an orifice positioned in the space between the fingers.   The base and fingers form a recess into which the anchor projects.  Securement means may be fastened to the anchor and positioned within the recess to hold the apparatus against the rail and thereby secure the rail to the foundation. The nose may include a rubber pad means engaging the foot of the rail to provide an energy absorbing securement of the rail.  The through opening in the base may have an open side facing in the direction of the lateral extension of the nose from the base so that the anchor projecting through the opening may be positioned adjacent to or in engagement with the foot of the rail.
Patent CA-2021618-C (CA)
Title: Method for protecting multi-pulse coders from fading and random pattern bit errors
Inventor: ZINSER RICHARD LOUIS
IPC: H03M13/09
Filed: 1990-07-19
Granted: 2000-12-26
Abstract: A low-overhead method of protecting multi-pulse speech coders from the effects of severe random or fading pattern bit errors combines a standard error correcting code (convolutional rate 1/2 coding a.nd Viterbi trellis decoding) for protection in random errors with cyclic redundancy code (CRC) error detection for fading errors. Compensation for detected fading errors takes place within the speech coder.      Protection is applied only to the perceptually significant bits in the transmitted frame.
Patent CA-2025388-C (CA)
Title: Colourdynamic decorative materials and method of obtaining them
Inventor: FEIST ANDREI ALEXEEVICH
IPC: E04F13/14
Filed: 1990-09-14
Granted: 1995-07-11
Abstract: A decorative material with a colourdynamic surface texture surface comprising three-dimensional elements of the texture or relief, differently oriented sections of which have different colours. The texture surface is formed by the three-dimensional elements with the total area of the surfaces of all the three-dimensional elements and the intervals between the bases of these elements to the area of the surface upon which they are arranged laying in the range from 1.2 to 24, and the ratio of the mean height of the three-dimensional elements to the mean radius of rounding of their peaks being in the range from 3 to 300, the differently oriented sections of the surface of each three-dimensional element having different colours and/or different optical properties. In this case, the similarly oriented sections of the surfaces of different three-dimensional elements have a similar colour and/or similar optical properties.
Patent CA-2032623-C (CA)
Title: Leaf chain drive assembly
Inventor: KEMPF DALE
IPC: B60P1/00
Filed: 1990-12-18
Granted: 1998-12-15
Abstract: A leaf drive assembly (20) designed for use with a platform lift of the type disclosed in U.S. Patent No. 4,058,228. Leaf chains (72, 120, 208) are used in place of roller chains for transmitting rotational drive between spaced sheave (50, 60). Each sheave contains a unique projecting lug (52, 54) designed to engage a correspondingly sized connecting link (122) in the associated leaf chain (120) so as to permit drive to be transmitted between the leaf chain and the associated sheave.
Patent CA-2034214-C (CA)
Title: Nitride products and method and apparatus for producing nitride products
Inventor: CARTER MICHAEL C
IPC: C01B21/06
Filed: 1991-01-15
Granted: 1998-09-29
Abstract: A method and apparatus are provided for producing a product comprising a nitride compound, such as for example silicon nitride.  A reactor is provided which has a chamber defined therein which is divided into a combustion zone and a reaction zone.  A combustible mixture is injected into the combustion zone in a direction generally toward the reaction zone, and is accordingly combusted in the combustion zone.  At least one reactant is injected at the boundary between the zones into the  reactor chamber  in a  direction  generally parallel  to  the longitudinal axis of the chamber so as to react to form a raw product comprising the nitride compound.   According to another aspect, a raw product powder as produced by the reactor comprises silicon nitride as the nitride compound and further comprises elemental silicon.
Patent CA-2035308-C (CA)
Inventor: AOYAMA YUICHI
IPC: G03G15/10
Filed: 1991-01-30
Granted: 1995-03-28
Abstract: A device for supplying a liquid developer from a toner container to a tank and from the tank to a developing unit which is operable with the liquid developer. The nozzle hole of the toner container opens into a circulation path along which the liquid developer is circulated. Hence, the nozzle hole is constantly dipped in the liquid developer with no regard to the liquid level in the tank and, therefore, kept free from the deposition of dried toner particles.
Patent CA-2041603-C (CA)
Inventor: NIELSEN DAVID L
IPC: B29C35/02
Filed: 1991-05-01
Granted: 2000-10-03
Abstract: A corrugated elastomeric tube having a Smooth interior surface (28) generally free from nipples can be produced by a novel process. A first step in the process is carried out by positioning an unvulcanized elastomeric tubing (14) over a mandrel (12) having a corrugated outer surface (23). The mandrel (12) has an exterior surface (30) which is free from holes. Next, each end of the tubing (14) is clamped to the mandrel (12). The tubing (14) and the mandrel (12) are heated to soften and vulcanizing the tubing (14). Also, pressure is provided to cause the tubing (14) to conform with the corrugated outer surface (13) of the mandrel (12). The vulcanized corrugated tube is then removed from the mandrel (12).
Patent CA-2044320-C (CA)
Title: Compact multimode input and output scanner
Inventor: STEMMLE DENIS J
IPC: H04N1/191
Filed: 1991-06-11
Granted: 1997-01-07
Abstract: A compact combined input scanner and output scanner having a frame assembly with a scanning carriage movably mounted for movement in a scanning path in a first direction across the length of said frame assembly. The scanning carriage has co-mounted a reading head secured thereto for scanning a document to produce a digital image of at least a portion of the document and a printing head secured thereto for relative movement with respect to a copy sheet and electrically connected to the reading head for printing a digital image on a copy sheet. The frame assembly includes copy sheet and document transport paths with an indexer to index a document through the document path in a direction transverse to the first direction and to index a copy sheet through the copy sheet path in the opposite transverse direction of indexing of said document.
Patent CA-2049014-C (CA)
Title: Method of separating dinitrogen pentoxide from its solution in nitric acid
Inventor: BAGG GREVILLE E G
IPC: C01B21/20
Filed: 1990-11-20
Granted: 2000-05-30
Abstract: A method of separating N2O5 from its solution in nitric acid which comprises the steps of: (a) preparing, by the electrochemical oxidation of N2O4 in nitric acid, a nitric acid solution at a temperature of at least 10 °C containing at least 45 wt % of dissolved (N2O4 + N2O5) and having a dissolved N2O5: nitric acid ratio by weight of at least 1:3; and (b) cooling the acid solution to less than 8 °C until an N2O5 solvate precipitates froze solution. The main advantage of the invention is that it enables electrically-efficient electrochemical methods to be employed in the production of the acid solution from which the solute is recovered.
Patent CA-2051600-C (CA)
Title: Spool for winding filiform elements and the like
Inventor: BARONE MARIO
IPC: B65H75/18
Filed: 1991-09-17
Granted: 1994-09-13
Abstract: A spool for  winding filiform elements and  the like,  comprised by two  parallel rings  joined by means  of a plurality of  U-shaped braces,  including diametrally  opposed accessory elements fixed  at least to some  of said braces and which,  in turn, support  a central  nucleus allowing rotation of the spool.
Patent CA-2052800-C (CA)
Title: Aryl sulphide, aryl sulphoxide and aryl sulphone compounds and processes for their preparation
Inventor: NAGL GERT
IPC: C07C319/20
Filed: 1991-10-04
Granted: 2003-11-11
Abstract: The present invention relates to novel compounds of the general formula I (see formula I) wherein A~ and B~ independently of one another denote a proton, with the limitation that they do not both simultaneously denote protons, the equivalent part of the barium ion, an ion of the general formula II (see formula II) or an ion of the general formula III (see formula III) wherein X represents N, P, As or Sb, R11, R12, R13 and R14 represent, for example (C1-C30)-alkyl, R15 and R16 represent, for example, hydrogen or (C1-C6)-alkyl and wherein R1 to R8 denote, for example, hydrogen or (C1-C30)-alkyl. The compounds are useful as charge control agents in toners and developers and as charge improving agents in powders and varnishes.
Patent CA-2055481-C (CA)
Title: Device for the leakproof transmission of rotary motion, with metal gaiter
Inventor: LECLAIRE REMY
IPC: F16J15/52
Filed: 1991-04-11
Granted: 2004-03-30
Abstract: Device, with metal gaiter, for leakproof transmission in particular for the control of a valve. According to the invention, a device includes a transfer part (32) coupled to both the drive shaft (14) and the driven shaft (20), the gaiter (26) surrounding the driven shaft being connected in a leakproof manner to said transfer part, the latter itself being fixed in its movements to a tilting element (42) able to protect the gaiter from the effects of torsion.
Patent CA-2058285-C (CA)
Inventor: HAMADA SHUNICHI
IPC: C08L23/16
Filed: 1991-12-20
Granted: 2002-02-05
Abstract: Disclosed is a two-layer thermoplastic elastomer sheet comprising a skin layer [I] and a reverse surface layer [II], each layer being composed of a thermoplastic elastomer containing a polyolefin resin (A) and an .alpha.-olefin copolymer rubber (B), wherein a difference [(I B) - (II B)] between the amount (I B) of the .alpha.-olefin copolymer rubber (B) contained in the thermoplastic elastomer of the skin layer (I) and the amount (II B) of the .alpha.-olefin copolymer rubber (B) contained in the thermoplastic elastomer of the reverse surface layer (II) is in the range of 5 to 85 parts by weight. The two-layer thermoplastic elastomer sheet of the invention is excellent in vacuum forming properties and can provide molded products excellent in the soft touch and having appearance of softness, appearance of flexibility and appearance of warmth. The sheet of the invention can be widely used for interior automotive trim such as an instrument panel.
Patent CA-2058843-C (CA)
Inventor: MARTIN MERRILL D
IPC: B65G47/08
Filed: 1992-01-07
Granted: 1999-04-06
Abstract: A machine receives packages in bundles and transports them over a series of conveyors to arrange them in suitable layers for stacking into solid stacks or loads of predetermined form or arrangement for palletizing or in a stack for further transportation.  Each conveyor performs related functions of rotating packages in a horizontal plane, moving transversely and delivering in the predetermined pattern to form layers of an eventual stack for further transportation.  Provision is made for insertion of sheets between layers as they are formed.