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| Number | Title | Issue Date |
| 5247958 | Safety valve, especially for a fuel tank vent pipe The valve, mounted on a vent pipe, allows the passage of gas in both directions, but prevents any escape of liquid fuel. The valve comprises a closed containment 7 equipped with a lower inlet port 8 and with an upper outlet port 9 which are connected to t... | 09/28/1993 |
| 5204423 | Process for the preparation of polythiophenes by use of ferric salts and alkyl halides A process for the preparation of a polymer which is electrically conductive and which is based on polythiophene, the process including polymerizing thiophene in a reaction medium including thiophene, from 2.5 to 20 moles of an anhydrous ferric salt per mo... | 04/20/1993 |
| 5202237 | Method of regulating expression in Bacillus subtilis using operator DNA This invention relates to operator DNA specific for the repressor of $c;105 and to the use thereof. The sequence of the operator DNA is 5'-GACGGAAATACAAG-3', 5', GTCGGAAATACAAT-3', 5'-GACGAAATTCAAG-3' or 5'-GTCGTGAATACCAT-3.... | 04/13/1993 |
| 5187080 | DNA encoding an antigenic protein derived from Eimeria tenella and vaccines for prevention of coccidiosis caused by Eimeria tenella Nucleic acid molecules are provided which encode antigenic proteins capable of inducing in a chicken an immune response conferring protection against Eimeria tenella. Expression vectors containing the nucleic acid molecules are also provided. Methods for ... | 02/16/1993 |
| 5164432 | Moulding compositions comprising polyolefins and cellulose fibres, process for their manufacture and objects wrought from these compositions Moulding compositions comprising a polyolefin, cellulose fibres and an unsaturated organosilane exhibiting a tensile elasticity modulus (E), measured at 100° C., higher than 1250 MPa and a ratio G'/G" of their modulus G', representing their elastic respo... | 11/17/1992 |
| 5141618 | Frame unit for an electrolyser of the filter press type and electrolysers of the filter-press type Frame unit for an electrolyser of the filter-press type, comprising a vertical metal sheeting (1), a peripheral frame made up of two vertical uprights (2, 3) and of two horizontal lengthwise members (4, 5) and a metal sheet (6) covering the sheeting (1) a... | 08/25/1992 |
| 5140059 | Compatibilized compositions comprising a polyamide and polypropylene Compatibilized compositions comprising at least one polyamide and at least propylene polymer which is at least partially modified by a polar monomer, in which compositions the propylene polymer has a melt flow index (MFI) measured according to ASTM standa... | 08/18/1992 |
| 5135610 | Baths and process for chemical polishing of stainless steel surfaces Baths for the chemical polishing of stainless steel surfaces containing, in aqueous solution, a mixture of hydrochloric acid, phosphoric acid, nitric acid and of sulphosal cylic acid and at least one abietic compound.... | 08/04/1992 |
| 5130008 | Frame unit for an electrolyser of the filter-press type and monopolar electrolyser of the filter-press type Frame unit for an electrolyser of the filter-press type, comprising a vertical frame (1) defining an electrolysis chamber (13), an electrode in the electrolysis chamber, comprising a pair of vertical metal sheets (6) arranged facing each other, horizontal... | 07/14/1992 |
| 5096782 | Structures with multiple polymeric layers comprising a vinylidene fluoride polymer layer bonded to a polar polymer layer Structures with multiple polymeric layers comprising a vinylidene fluoride polymer layer bonded to a polar polymer layer by the use of a polymeric adhesive comprising a vinyl acetate polymer. These structures are characterized in that the product of the w... | 03/17/1992 |
| 5095081 | Process for the manufacture of vinylidene fluoride polymers and use of vinylidene fluoride polymers for paint formulation Process for the manufacture of vinylidene fluoride polymers by noncontinuous polymerization of vinylidene fluoride in an aqueous medium with the use of peroxydisulphates as initiators and in the absence of emulsifying agent, in which an alkyl acetate, emp... | 03/10/1992 |
| 5068474 | Process for the purification of vinyl chloride Process for the removal from vinyl chloride of compounds of ester type by an operation of treatment comprising an alkaline washing and a treatment with a hydride.... | 11/26/1991 |
| 5032375 | Process for the manufacture of barium titanate and/or strontium titanate crystals An amorphous powder of titanium oxide and of barium and/or strontium oxide is precipitated by the hydrolysis of titanium alcoholate in the presence of barium oxide, hydroxide or alcoholate or strontium oxide, hydroxide or alcoholate and an acid organic co... | 07/16/1991 |
| 5028476 | Coextruded rigid thermoplastic structures enabling biaxially oriented materials to be obtained Biaxially oriented rigid thermoplastic structures with multiple coextruded polymeric layers comprising a layer of vinyl chloride polymer and a coating layer of polymethyl methacrylate containing products absorbing ultraviolet radiation. The content of pro... | 07/02/1991 |
| 5008474 | Process for the manufacture of 1-chloro-1,1-difluoroethane 1-Chloro-1,1-difluoroethane is prepared by reacting hydrogen fluoride with vinylidene chloride, in a liquid medium containing preferably at least 40 mol % 1,1-dichloro-1-fluoroethane.... | 04/16/1991 |
| 4997616 | Process for producing, by blown film extrusion, a sleeve of vinyl chloride-based resin, at least one face of which is matte in appearance The extruded sleeve is cooled at the end of the die by a circulation of a refrigerant fluid whose temperature To satisfies the relationship: ##EQU1## G being equal to: ##EQU2## Tm and V being the mean temperature of the resin at the exit of the ... | 03/05/1991 |
| 4898906 | Compositions based on vinylidene fluoride polymers which have a reduced smoke-generating capacity Compositions based on vinylidene fluoride polymers which have a reduced smoke-generating capacity, comprising an effective amount of a molybdenum derivative, such as the molybdate of calcium, zinc or aluminium, as a smoke reducer. The compositions are ver... | 02/06/1990 |
| 4889641 | Process for the neutralization of a layer of acidic water over a sediment comprising a humic substance Process for the neutralization of a layer of acidic water over a sediment comprising a humic substance, according to which blocks of a sodium compound are made to fall through the water layer and to enter the sediment at least partially.... | 12/26/1989 |
| 4800008 | Electrolyser of the filter-press type The electrolyser comprises vertical electrodes (8, 9) and a stack of vertical frames (1, 2) made of a flexible material, deployed freely over the periphery of the electrodes and elastically deformed by compression one against another between two end flang... | 01/24/1989 |
| 4786662 | Storage-stabilized compositions based on vinylidene fluoride polymers comprising a metal molybdate Storage-stabilized compositions based on vinylidene fluoride polymers containing a metal molybdate and, as stabilizer, an effective quantity of alkali metal or alkaline-earth metal carbonate. The compositions are most particularly suitable for the manufacture ... | 11/22/1988 |
| 4734310 | Sheet of artificial leather made of polyvinyl chloride, the back of which is coated with a dry adhesive capable of being activated by heat, and use of this sheet for thermocovering of rigid articles A sheet of artificial leather made of polyvinyl chloride the back of which is coated with a dry adhesive capable of being activated by heat. The dry adhesive consisting of the product of the reaction between a substantially linear hydroxypolyurethane deri... | 03/29/1988 |
| 4680958 | Apparatus for fast determination of the rheological properties of thermoplastics Apparatus composed of a control and monitoring unit 1, a thermostated cylinder 2 receiving a measured quantity of material to be evaluated, a plunger 3 sliding in the cylinder 2, an exchanger system enabling the cylinder 2 to be equipped with a suitable d... | 07/21/1987 |
| 4675368 | Process for inhibiting crust formation in reactors during alpha-olefin prepolymerization modification of Ziegler catalyst Process for inhibiting crust formation in reactors used for polymerising alpha-olefines, such as ethylene and propylene, in the presence of particles of catalytic solids containing titanium and chlorine in the combined state. The polymerisation is carried... | 06/23/1987 |
| 4661351 | Compositions containing biosynthetic pesticidal products and at least one phosphate, processes for their preparation and their use The compositions contain biosynthetic pesticidal products originating from microorganisms of the family of Bacillaceae and at least one water-soluble inorganic phosphate. They can be used, if appropriate after dispersion in a liquid, for spraying.... | 04/28/1987 |
| 4659625 | Polymeric multilayer structures incorporating a layer of vinyl fluoride or vinylidene fluoride polymer which is bonded to a polar polymer layer Polymeric multilayer structures incorporating a layer made of vinyl fluoride or vinylidene fluoride polymer which is bonded to a polar polymer layer with the use of a vinyl acetate polymer. The polymeric multilayer structures may be in the form of films, ... | 04/21/1987 |
| 4649182 | Polymerization catalysts and methods of preparation thereof The catalysts are composed of an organometallic compound and a solid catalytic component which is the reaction product of a transition metal derivative and a solid support having a composition, at least on its surface, which corresponds to the formula M(O... | 03/10/1987 |
| 4617360 | Process for the polymerization of -olefins Catalyst systems for the polymerization of -olefins, as well as process for making and using the same, which comprises an organometallic compound, like an organoaluminum compound, and a solid catalyst complex formed by reacting together at least on... | 10/14/1986 |
| 4613709 | Process for the pyrolytic dehydrochlorination of haloalkanes in the presence of an initiator based on chlorinated product and the initiator employed in such a process The pyrolytic dehydrochlorination of haloalkanes is carried out with an initiator comprising chiefly decachlorobutane and octachloro-1-butene. The process can be applied particularly to the production of chloroethylenes from the corresponding polychloroethanes... | 09/23/1986 |
| 4595477 | Electrolysis cell Electrolysis cell incorporating, in an enclosure, electrodes (17) each of which passes, in a leaktight manner, through an individual opening (16) in a wall (4) of the enclosure and each of which is surrounded by an individual bag-shaped tubular separator ... | 06/17/1986 |
| 4565613 | Process for removing a layer of thick mercury from the bottom of mercury-cathode electrolysis cells and a process for the electrolysis of an aqueous solution of an alkali metal halide in a mercury-cathode cell To remove a layer of thick mercury from the bottom of electrolysis cells having a cathode formed by a film of mercury flowing over the bottom, a scraper is moved in the mercury film in a controlled manner to leave continuously a residual film of thick mer... | 01/21/1986 |
| 4555317 | Cathode for the electrolytic production of hydrogen and its use Cathode for the electrolytic production of hydrogen, having an active surface which comprises a nickel substrate and a coating film of dendrites of nickel or cobalt. This cathode can be used in a cell for the electrolysis of sodium chloride brine.... | 11/26/1985 |
| 4544684 | Compositions based on vinylidene fluoride polymers incorporating boron carbide Compositions based on vinylidene fluoride polymers incorporating boron carbide coated with an acrylic polymer, preferably with the use of an anchor coating consisting of a complex of a polyhydroxylated polymer and a transition metal cation. The compositio... | 10/01/1985 |
| 4534837 | Process for the manufacture of an electrode for electrochemical processes and a cathode for the electrolytic production of hydrogen An electrically conductive substrate is coated with a material containing an unsintered powder of a metal active for electrochemical proton reduction and colloidal silica and the said material is heated on the substrate successively in an oxidizing atmosp... | 08/13/1985 |
| 4482441 | Permeable diaphragm, made from a hydrophobic organic polymeric material, for a cell for the electrolysis of aqueous solutions of an alkali metal halide Permeable diaphragm for a cell for the electrolysis of aqueous solutions of an alkali metal halide, the diaphragm being made from a hydrophobic organic polymeric material containing an oxide of a metal chosen from amongst group IIa of the periodic table o... | 11/13/1984 |
| 4469755 | Preform made from a thermoplastic and process for blow-moulding a hollow article from such a preform The preform (1) for the production of hollow articles by blow-moulding possesses a profiled false neck (4) provided with a circular toothed collar (6), and during the thermal conditioning of the preform for the purpose of final blowing, the preform, held ... | 09/04/1984 |
| 4450125 | Process for the production of polypropylene fibrids A process for the production of polypropylene fibrids of short length by abrupt expansion of a liquid mixture of molten polypropylene, an alkane solvent for the polypropylene, and a minor amount of a non-solvent for the polypropylene. The mixture, which i... | 05/22/1984 |
| 4428918 | Process and plant for the preparation of concentrated aqueous solutions of alkali metal hypochlorite Process and plant for the preparation of concentrated aqueous solutions of alkali metal hypochlorite, in which a suspension of crystals of alkali metal chloride in an aqueous solution of alkali metal hypochlorite is circulated from bottom to top in a tubu... | 01/31/1984 |
| 4424391 | Process for the manufacture of olefine oxides A process for the manufacture of olefine oxides, comprising reacting, with an olefine, an organic solution of percarboxylic acid which is obtained by reacting the corresponding carboxylic acid with hydrogen peroxide. The organic solvent employed is a mixt... | 01/03/1984 |
| 4424340 | Process for removing residual vinyl chlorine from the polymer Vinyl chloride and any other comonomers present in a vinyl chloride polymer are removed by heating the polymer to a temperature between its glass transition temperature and 180° C. by directly condensing steam on to the polymer, maintaining the polymer a... | 01/03/1984 |
| 4416949 | Composite panel comprising a metal foil and a polyolefine sheet The invention relates to a composite panel comprising at least one metal foil combined, by hot pressing, with at least one polyolefine sheet in which the polyolefine sheet is produced from a mixture of 10 to 90% by weight of cellulose fibres and from 90 t... | 11/22/1983 |
