Patents by Inventor Dominique Grandjean
Dominique Grandjean has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9327427Abstract: Process for manufacturing composite sheets based on PVC and a network of long fibers, said process comprising the following steps: dispersing PVC in powder form in said network; subjecting the dispersion to an alternating electric field with a sufficient intensity and for a sufficient time in order to distribute the powder in the network; and heating the dispersion under pressure until the powder forms a continuous matrix.Type: GrantFiled: November 26, 2007Date of Patent: May 3, 2016Assignee: SOLVAY (Societe Anonyme)Inventors: Claude Dehennau, Dominique Grandjean
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Patent number: 8696853Abstract: A process for manufacturing a plastic-based cellular structure, in which parallel lamellae are continuously extruded through a die having a plurality of parallel slots and upon exiting the die spaces lying between two adjacent lamellae are subjected, in successive alternations and between two sizing units whose length is short enough for the plastic composition to remain molten, to an injection of compressed gas and to a vacuum, the two sides of a given lamella being, in respect of one of them, subjected to the action of the compressed gas and, in respect of the other of them, subjected to the action of the vacuum, and vice versa during the next alternation, so as to deform the lamellae and weld them together in pairs, with formation, in a plane approximately parallel to the extrusion direction, of a cellular structure whose constituent cells extend perpendicular to the extrusion direction.Type: GrantFiled: August 17, 2006Date of Patent: April 15, 2014Assignee: Solvay SAInventors: Claude Dehennau, Dominique Grandjean, Paul Henrard
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Patent number: 8110137Abstract: Process for manufacturing a plastic-based cellular structure comprising: a step (a) during which parallel lamellae of a composition based on at least one thermoplastic polymer (P) chosen from amorphous and semi-crystalline polymers are continuously extruded through a die containing a plurality of parallel slots; a step (b) during which, on exiting the die and in successive alternations, the spaces between two adjacent lamellae are subjected to an injection of a fluid (f) and to a vacuum, the two sides of a same lamella being, for one side, subjected to the action of the fluid (f) and, for the other side, to the action of the vacuum, and inversely during the following alternation, in order to produce deformation of the lamellae and to weld them in pairs with formation, in a plane approximately parallel to the extrusion direction, of a cellular structure whose constituent cells extend perpendicular to the extrusion direction; a step (c) during which the cellular structure obtained in step (b) is drawn perpenType: GrantFiled: March 22, 2007Date of Patent: February 7, 2012Assignee: Solvay (Societe Anonyme)Inventors: Claude Dehennau, Dominique Grandjean, Philippe-Jacques Leng, Frederic Beullekens
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Publication number: 20110012281Abstract: Process for manufacturing a plastic-based cellular structure, in which: parallel lamellae of a composition based on at least one plastic are continuously extruded, in an approximately horizontal direction, through a die having a front face provided with a plurality of parallel slots and with an insulating material, at least on the surface; and upon exiting the die, the spaces lying between two adjacent lamellae are subjected, in successive alternations and between two sizing units whose length is short enough for the plastic composition to remain molten, to an injection of compressed gas and to a vacuum, the two sides of a given lamella being, in respect of one of them, subjected to the action of the compressed gas and, in respect of the other of them, subjected to the action of the vacuum, and vice versa during the next alternation, so as to deform the lamellae and weld them together in pairs, with formation, in a plane approximately parallel to the extrusion direction, of a cellular structure whose constituType: ApplicationFiled: August 17, 2006Publication date: January 20, 2011Applicant: Solvay(Societe Anonyme)Inventors: Claude Dehennau, Dominique Grandjean, Paul Henrard
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Publication number: 20110012284Abstract: Process for manufacturing a plastic-based perforated three-dimensional structure comprising: a step (1) during which a flat structure of a composition based on at least one thermoplastic polymer (P) chosen from amorphous and semi-crystalline polymers is continuously extruded; a step (2) during which the flat structure resulting from step (1) is fabricated in the form of a perforated three-dimensional structure; a step (3) during which the perforated three-dimensional structure is grasped using gripping means comprising two pairs of jaws that are applied to the two side ends of the structure on both sides of the latter, each pair having its jaws at a given distance from one another in order to apply a controlled compression ratio to the structure; and a step (4) during which the perforated three-dimensional structure is drawn by moving the two pairs of jaws relative to one another in a direction perpendicular to the extrusion direction and by keeping the distance between the jaws of one and the same pair constType: ApplicationFiled: February 10, 2009Publication date: January 20, 2011Applicant: SOLVAY (SOCIETE ANONYME)Inventors: Claude Dehennau, Dominique Grandjean
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Patent number: 7851042Abstract: Plane structure composed of a cohesive assembly of contiguous cellular cells having any cross section and essentially parallel walls from one cell to another, characterized in that the walls of the cells comprise at least two portions based on different polymeric compositions, the junction between said portions being substantially parallel to the plane of the structure.Type: GrantFiled: April 4, 2006Date of Patent: December 14, 2010Assignee: SOLVAY (Societe Anonyme)Inventors: Claude Dehennau, Dominique Grandjean, Philippe-Jacques Leng
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Patent number: 7780762Abstract: Cartridge for the treatment of a gas by reaction with a reactive substance, comprising a cohesive assembly of alveolate cells that are at least partly filled with the reactive substance, the alveolate cells possessing one part of their wall which is permeable to the gas and impermeable to the reactive substance, said wall part being intended to be in contact with the gas.Type: GrantFiled: September 11, 2006Date of Patent: August 24, 2010Assignee: Solvay (Societe Anonyme)Inventors: Jean-Marie Blondel, Dominique Grandjean, Claude Dehennau, Phillipe-Jacques Leng
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Publication number: 20100075104Abstract: Process for manufacturing composite sheets based on PVC and a network of long fibers, said process comprising the following steps: dispersing PVC in powder form in said network; subjecting the dispersion to an alternating electric field with a sufficient intensity and for a sufficient time in order to distribute the powder in the network; and heating the dispersion under pressure until the powder forms a continuous matrix.Type: ApplicationFiled: November 26, 2007Publication date: March 25, 2010Applicant: SOLVAY (SOCIETE ANONYME)Inventors: Claude Dehennau, Dominique Grandjean
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Publication number: 20090134550Abstract: A die for producing wide, flat, plastic-based structures including a base and a cover. The die includes a plurality of ducts for feeding molten plastic, opening into a distribution channel, and a longitudinal outflow slot for outputting the molten plastic in a form of a substantially flat structure. The distribution channel and the outflow slot communicate via a plurality of distributors of generally triangular section having a downstream apex, near to which a feed duct emerges, and two upstream apexes forming intersections of the distribution channel and of the outflow slot, each feed duct being fed with molten plastic via an upstream orifice of the die that is specific thereto.Type: ApplicationFiled: May 29, 2006Publication date: May 28, 2009Applicant: Solvay (Societe Anonyme)Inventors: Claude Dehennau, Dominique Grandjean, Florentin Langouche
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Publication number: 20090107621Abstract: Process for manufacturing a plastic-based cellular structure comprising: a step (a) during which parallel lamellae of a composition based on at least one thermoplastic polymer (P) chosen from amorphous and semi-crystalline polymers are continuously extruded through a die containing a plurality of parallel slots; a step (b) during which, on exiting the die and in successive alternations, the spaces between two adjacent lamellae are subjected to an injection of a fluid (f) and to a vacuum, the two sides of a same lamella being, for one side, subjected to the action of the fluid (f) and, for the other side, to the action of the vacuum, and inversely during the following alternation, in order to produce deformation of the lamellae and to weld them in pairs with formation, in a plane approximately parallel to the extrusion direction, of a cellular structure whose constituent cells extend perpendicular to the extrusion direction; a step (c) during which the cellular structure obtained in step (b) is drawn perpenType: ApplicationFiled: March 22, 2007Publication date: April 30, 2009Applicant: SOLVAY (SOCIETE ANONYME)Inventors: Claude Dehennau, Dominique Grandjean, Philippe-Jacques Leng, Frederic Beullekens
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Publication number: 20080254277Abstract: Process for manufacturing cellular structure based on a composition comprising an amorphous thermoplastic polymer and made up of sheets extruded in parallel and intermittently welded, according to which: an amorphous polymer composition is chosen which has a dynamic melt viscosity, measured at its processing temperature and at an angular velocity of 0.1 rad/s, of less than 2000 Pa.s; and the temperature of the coolant is regulated so that it is at least equal to Tg—20° C., where Tg is the glass transition temperature of the composition based on the amorphous polymer.Type: ApplicationFiled: December 12, 2006Publication date: October 16, 2008Applicant: Solvay (Societe Anonyme)Inventors: Claude Dehennau, Dominique Grandjean
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Publication number: 20080236388Abstract: Cartridge for the treatment of a gas by reaction with a reactive substance, comprising a cohesive assembly of alveolate cells that are at least partly filled with the reactive substance, the alveolate cells possessing one part of their wall which is permeable to the gas and impermeable to the reactive substance, said wall part being intended to be in contact with the gas.Type: ApplicationFiled: September 11, 2006Publication date: October 2, 2008Applicant: SOLVAY SAInventors: Jean-Marie Blondel, Dominique Grandjean, Claude Dehennau, Philippe-Jacques Leng
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Publication number: 20080193711Abstract: Plane structure composed of a cohesive assembly of contiguous cellular cells having any cross section and essentially parallel walls from one cell to another, characterized in that the walls of the cells comprise at least two portions based on different polymeric compositions, the junction between said portions being substantially parallel to the plane of the structure.Type: ApplicationFiled: April 4, 2006Publication date: August 14, 2008Applicant: SOLVAY (SOCIETE ANONYME)Inventors: Claude Dehennau, Dominique Grandjean, Philippe-Jacques Leng
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Publication number: 20060219354Abstract: Method of assembling the elements of a structure comprising a honeycomb core Method of assembling the elements of a structure comprising a cellular honeycomb core by welding using electromagnetic radiation, in which the structure is based on a plastic transparent to electromagnetic radiation, and at least one of the elements to be assembled comprises, in the vicinity of at least one part of its surface, a layer that at least partly absorbs the electromagnetic radiation, the welding taking place by the melting of this layer by means of the electromagnetic radiation in the weld zones.Type: ApplicationFiled: July 16, 2004Publication date: October 5, 2006Applicant: Solvay S.A.Inventors: Claude Dehennau, Dominique Grandjean
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Patent number: 6046274Abstract: The invention relates to a flexible composition comprising a vinyl chloride polymer and a block copolymer. The latter comprises a poly(ethylene oxide) block and a block of a polymer which is miscible with the vinyl chloride polymer, other than the latter itself. The invention also relates to a poly(ethylene oxide)/poly-.epsilon.-caprolactone diblock copolymer which can be used in this composition, as well as to the use of this composition for the manufacture of an article and to an article comprising this composition.Type: GrantFiled: January 28, 1998Date of Patent: April 4, 2000Assignee: Solvay (Societe Anonyme)Inventors: Dominique Grandjean, Zdenek Hruska, Danny Van Hoyweghen, Henri Wautier
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Patent number: 5296229Abstract: The film is obtained directly by extrusion from the lactic acid-based polymer plasticised beforehand by incorporation of 5 to 30% by weight of the polymer of a glycerol ester obtained from an acid containing 4 carbon atoms in its molecule.The film has an elongation at break of more than 300% and is particularly suitable for the production of medical dressings.Type: GrantFiled: July 20, 1992Date of Patent: March 22, 1994Assignee: Solvay (Societe Anonyme)Inventor: Dominique Grandjean
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Patent number: 4804175Abstract: The invention relates to a system or apparatus intended for temporary storage of flat articles. Drive means (22A, 33) enable the articles coming from a first track (15) to be carried to a storage pocket (35). A pressure roller (51B) that is normally in contact with a removal roller (45B) is momentarily spaced apart from its position in order to enable an article stored in the pocket to be put in contact with the removal roller, so that later it is engaged in a second track (53). The pressure roller prevents an article that arrives in the pocket later from coming into contact with the removal roller, as long as the article constrained between these two rollers has not been ejected from the pocket.Type: GrantFiled: July 2, 1987Date of Patent: February 14, 1989Assignee: Bull, S.A.Inventor: Dominique Grandjean