Patents by Inventor Pierrick Duflot
Pierrick Duflot 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: 8232388Abstract: The invention relates to a granulated maltitol of concentration greater than or equal to 97%, preferably between 98 and 99%, characterized in that it has a water content less than 1%, preferably less than 0.5%, more preferably less than or equal to 0.4%, a compressibility greater than or equal to 300 N, preferably between 300 and 500 N, and a hygroscopicity less than or equal to 2.5%, preferably between 0.15 and 2.5%.Type: GrantFiled: December 22, 2008Date of Patent: July 31, 2012Assignee: Roquette FreresInventors: Baptiste Boit, Pierrick Duflot, José Lis
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Publication number: 20120046460Abstract: The invention relates to a method of purifying glucose polymers for the production of peritoneal dialysis solutions, characterized in that it includes at least one step of processing activated carbon and/or granular black, at least one sterilizing filtration step, at least one heat treatment step, and at least one ultrafiltration step.Type: ApplicationFiled: April 29, 2010Publication date: February 23, 2012Applicant: ROQUETTE FRERESInventors: Marc Biguet, Stéphane Bourdain, Pierrick Duflot
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Patent number: 8112935Abstract: A method for producing a powder containing xylitol crystal particles and another polyol including a mixture containing a xylitol syrup and another polyol, whose dry material content is equal to or greater than 95% by weight, xylitol content ranges from 85 to 97.5% by weight and the other polyol content ranges at least from 15 to 2.5% by weight with respects to the dry material. The method includes: obtaining the mixture by simultaneously dispersing the xylitol and the other polyol syrup and xylitol-containing germs in an open rotating vessel containing xylitol-based granules, mixing the xylitol and the other polyol syrup and xylitol-containing germs on the surface of the xylitol-containing germs contained in the vessel, removing the xylitol-based granules and the other polyol from the vessel and crystallizing the xylitol and other polyol contained in the granules.Type: GrantFiled: June 28, 2006Date of Patent: February 14, 2012Assignee: Roquette FreresInventors: Pierrick Duflot, Baptiste Boit
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Publication number: 20120034342Abstract: The present invention relates to a method for obtaining a preparation of ?-amylases from the soluble fraction of starch plants, characterized in that the soluble fraction of starch plants is selected from the group consisting of the soluble fractions of wheat, pea, broad bean, horse bean, rice, barley, rye, buckwheat, potato and sweet potato, and preferably of wheat and barley, a clarification of said soluble fractions is carried out in such a way as to remove therefrom the insoluble substances and the colloids and, optionally, an ultrafiltration of said clarified soluble fractions is carried out in such a way as to obtain an ultrafiltration retentate containing the concentrated ?-amylase and an ultrafiltration permeate, said ultrafiltration retentate containing the concentrated ?-amylase is diafiltered and the resulting ?-amylase is recovered.Type: ApplicationFiled: March 30, 2010Publication date: February 9, 2012Applicant: ROQUETTE FRERESInventors: Vincent Courbois, Pierrick Duflot, Damien Passe
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Patent number: 8101806Abstract: The present invention relates to a granulated sorbitol of essentially ? crystalline form and having a high sorbitol content, characterized in that it has a specific surface area, determined according to the BET method, of greater than or equal to 2 m2/g, preferably of between 2.2 and 4 m2/g, and even more preferably of between 2.5 and 3.5 m2/g, a compressibility of between 200 and 400 N, preferably of between 250 and 350 N, and a volume-average diameter, measured by laser diffraction particle sizing using a dry-system module, of between 260 and 1000 ?m, preferably of between 260 and 500 ?m, and even more preferably of between 260 and 350 ?m.Type: GrantFiled: July 23, 2007Date of Patent: January 24, 2012Assignee: Roquette FreresInventors: Pierrick Duflot, Baptiste Boit, Philippe Lefevre, José Lis
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Patent number: 8012263Abstract: A process for preparing maltitol crystals by evapocrystallization, includes preparing a maltitol solution with a maltitol richness of at least 85% based on dry matter, preferably a maltitol richness of between 89% and 99% based on dry matter, and even more preferably a maltitol richness of between 93% and 95% based on dry matter; concentrating under vacuum maltitol solution in the evapocrystallizer so as to obtain a maltitol syrup whose degree of maltitol supersaturation is within the metastable zone of maltitol; seeding the supersaturated maltitol solution with a maltitol seed crystal in dispersed form; performing the crystallization while keeping constant the degree of maltitol supersaturation within the metastable zone of maltitol by controlling the conditions of temperature, the conditions of vigorous stirring by pumping of the evaporation vapors, and the conditions of feeding in of the maltitol syrup to be crystallized; and recovering the crystals thus obtained.Type: GrantFiled: October 29, 2008Date of Patent: September 6, 2011Assignee: Roquette FreresInventors: Manuel Barata, Pierrick Duflot, Adem Gharsallaoui, Mohamed Mathlouthi
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Patent number: 8007850Abstract: The invention relates to a method for making a powder containing crystalline particles of glucopyranosyl-alditols, including the continuous mixing of a glucopyranosyl-alditol syrup with a dry matter content of at least 80% by weight and a glucopyranosyl-alditol content of at least 95% by weight, preferably of at least 98% by weight based on dry matter, the mixing being carried out by simultaneously dispersing the glucopyranosyl-alditol syrup and germs containing glucopyranosyl-alditols in an open rotary container containing (glucopyranosyl-alditol)-based granules, whereby the glucopyranosyl-alditol syrup and the germs containing glucopyranosyl-alditols are mixed at the surface of the (glucopyranosyl-alditol)-based granules contained in the container, recovering the (glucopyranosyl-alditol)-based granules from the container and crystallizing the glucopyranosyl-alditols contained in the granules, the (glucopyranosyl-alditol)-based granules in the container being kept in motion by rotating the container.Type: GrantFiled: December 20, 2005Date of Patent: August 30, 2011Assignee: Roquette FreresInventors: Pierrick Duflot, Liuming Zhou
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Publication number: 20090324794Abstract: The present invention relates to a granulated sorbitol of essentially ? crystalline form and having a high sorbitol content, characterized in that it has a specific surface area, determined according to the BET method, of greater than or equal to 2 m2/g, preferably of between 2.2 and 4 m2/g, and even more preferably of between 2.5 and 3.5 m2/g, a compressibility of between 200 and 400 N, preferably of between 250 and 350 N, and a volume-average diameter, measured by laser diffraction particle sizing using a dry-system module, of between 260 and 1000 ?m, preferably of between 260 and 500 ?m, and even more preferably of between 260 and 350 ?m.Type: ApplicationFiled: July 23, 2007Publication date: December 31, 2009Applicant: ROQUETTE FRERESInventors: Pierrick Duflot, Baptiste Boit, Philippe Lefevre, Jose Lis
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Publication number: 20090182132Abstract: The invention concerns maltitol crystals, characterized in that they have a rectangular parallelepipedal shape and have a length to width dimensional ratio in the range 1.8 to 5.3, preferably 3±0.7, and a process for producing them.Type: ApplicationFiled: December 12, 2008Publication date: July 16, 2009Applicant: ROQUETTE FRERESInventors: Manuel Barata, Pierrick Duflot, Abdelfattah Bensouissi, Mohamed Mathlouthi
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Publication number: 20090163700Abstract: The invention relates to a granulated maltitol of concentration greater than or equal to 97%, preferably between 98 and 99%, characterized in that it has a water content less than 1%, preferably less than 0.5%, more preferably less than or equal to 0.4%, a compressibility greater than or equal to 300 N, preferably between 300 and 500 N, and a hygroscopicity less than or equal to 2.5%, preferably between 0.15 and 2.5%.Type: ApplicationFiled: December 22, 2008Publication date: June 25, 2009Applicant: ROQUETTE FRERESInventors: Baptiste BOIT, Pierrick DUFLOT, Jose LIS
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Publication number: 20090114214Abstract: A process for preparing maltitol crystals by evapocrystallization, includes preparing a maltitol solution with a maltitol richness of at least 85% based on dry matter, preferably a maltitol richness of between 89% and 99% based on dry matter, and even more preferably a maltitol richness of between 93% and 95% based on dry matter; concentrating under vacuum maltitol solution in the evapocrystallizer so as to obtain a maltitol syrup whose degree of maltitol supersaturation is within the metastable zone of maltitol; seeding the supersaturated maltitol solution with a maltitol seed crystal in dispersed form; performing the crystallization while keeping constant the degree of maltitol supersaturation within the metastable zone of maltitol by controlling the conditions of temperature, the conditions of vigorous stirring by pumping of the evaporation vapors, and the conditions of feeding in of the maltitol syrup to be crystallized; and recovering the crystals thus obtained.Type: ApplicationFiled: October 29, 2008Publication date: May 7, 2009Applicant: ROQUETTE FRERESInventors: Manuel BARATA, Pierrick DUFLOT, Adem GHARSALLAOUI, Mohamed MATHLOUTHI
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Publication number: 20090007903Abstract: A method for producing a powder containing xylitol crystal particles and another polyol including a mixture containing a xylitol syrup and another polyol, whose dry material content is equal to or greater than 95% by weight, xylitol content ranges from 85 to 97.5% by weight and the other polyol content ranges at least from 15 to 2.5% by weight with respects to the dry material. The method includes: obtaining the mixture by simultaneously dispersing the xylitol and the other polyol syrup and xylitol-containing germs in an open rotating vessel containing xylitol-based granules, mixing the xylitol and the other polyol syrup and xylitol-containing germs on the surface of the xylitol-containing germs contained in the vessel, removing the xylitol-based granules and the other polyol from the vessel and crystallizing the xylitol and other polyol contained in the granules.Type: ApplicationFiled: June 28, 2006Publication date: January 8, 2009Applicant: ROQUETTE FRERESInventors: Pierrick Duflot, Baptiste Boit
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Publication number: 20060147597Abstract: The invention relates to a method for making a powder containing crystalline particles of glucopyranosyl-alditols, including the continuous mixing of a glucopyranosyl-alditol syrup with a dry matter content of at least 80% by weight and a glucopyranosyl-alditol content of at least 95% by weight, preferably of at least 98% by weight based on dry matter, the mixing being carried out by simultaneously dispersing the glucopyranosyl-alditol syrup and germs containing glucopyranosyl-alditols in an open rotary container containing (glucopyranosyl-alditol)-based granules, whereby the glucopyranosyl-alditol syrup and the germs containing glucopyranosyl-alditols are mixed at the surface of the (glucopyranosyl-alditol)-based granules contained in the container, recovering the (glucopyranosyl-alditol)-based granules from the container and crystallizing the glucopyranosyl-alditols contained in the granules, the (glucopyranosyl-alditol)-based granules in the container being kept in motion by rotating the container.Type: ApplicationFiled: December 20, 2005Publication date: July 6, 2006Inventors: Pierrick Duflot, Liuming Zhou
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Patent number: 6743456Abstract: The invention relates to a sweetening composition comprising a) at least one low soluble compound with a solubility in water of less than 60 g per 100 g of solution at 20° C. and b) at least one anti-crystallizing agent comprising a fraction of at least one compound selected from the group consisting of pyrodextrins and polyglucoses and a mixture of pyrodextrins and polyglucoses in the range of 1000 to 8000 Daltons. The invention relates also the use of such a composition for the manufacture of boiled sugars or as a flavoring carrier.Type: GrantFiled: May 4, 1999Date of Patent: June 1, 2004Inventors: Guillaume Ribadeau-Dumas, Catherine Fouache, Pierrick Duflot
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Patent number: 6630586Abstract: The subject matter of the invention is branched maltodextrins, characterised by the fact that they present between 22% and 35%, preferably between 27 and 34%, glucosidic linkages 1→6, a content of reducing sugars lower than 20%, a polymolecularity index lower than 5 and a number average molecular weight Mn at most equal to 4500 g/mole, and the method of obtaining these branched maltodextrins.Type: GrantFiled: December 3, 1999Date of Patent: October 7, 2003Assignee: Roquette FreresInventors: Catherine Fouache, Pierrick Duflot, Philippe Looten
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Publication number: 20020079268Abstract: The invention relates to a process for preparing a fermentation medium for producing high-purity metabolites from a renewable raw material, characterised in that it consists of optionally treating said renewable raw material to enrich it with carbon or nitrogen sources which can be directly assimilated by micro-organisms and to eliminate insoluble impurities, using a technique chosen from the group consisting of nanofiltration and electrodialysis, alone or in combination, to eliminate low molecular weight impurities from said renewable raw material without degrading its concentration of carbon sources which can be directly assimilated, treating the raw material from which the low molecular weight impurities have been eliminated in this way to top it up with nitrogen or carbon sources which can be directly assimilated by the micro-organisms, and recovering the fermentation medium obtained in this way.Type: ApplicationFiled: August 29, 2001Publication date: June 27, 2002Inventors: Jean-Jacques Caboche, Pierrick Duflot, Catherine Fouache, Laurent Seigueilha
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Patent number: 6344591Abstract: The invention concerns modified maltitol crystals of particular forms, one pyramidal, the other prismatic. It further concerns crystalline compositions containing them and processes for their preparation.Type: GrantFiled: September 25, 1998Date of Patent: February 5, 2002Assignee: Roquette FreresInventors: Jean-Bernard Leleu, Patrick Haon, Pierrick Duflot, Philippe Looten
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Patent number: 6280985Abstract: The present invention relates to a process for the separation and purification of lactic acid from a fermentation medium wherein the lactic acid is totally or partially in the form of a salt or salts. The lactic acid producing microorganisms are separated from the other components of the fermentation medium. This solution is concentrated and then acidified to a pH below or equal to 3. The acidified solution is passed over a cation exchange resin to give a fraction that has maximum of 25% lactic acid salts relative to the dry weight of the solution. This fraction is subjected to bipolar fractionating electrodialysis. The resulting lactic acid is further purified, concentrated and then recovered.Type: GrantFiled: October 13, 2000Date of Patent: August 28, 2001Assignee: Roquette FreresInventors: Jean-Jacques Caboche, Catherine Fouache, Jean-Christophe Choque, Pierrick Duflot, Eric Dubois
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Patent number: 6274355Abstract: The invention concerns an immobilized maltogenic &agr;-amylase, which is adsorbed on particles of at least one porous substrate selected from the group consisting of phenolic resins, acrylic resins and polystyrene resins. The present invention also relates to the use of such an &agr;-amylase for the preparation of a maltose-rich syrup.Type: GrantFiled: December 28, 1999Date of Patent: August 14, 2001Assignee: Roquette FreresInventors: Pierrick Duflot, Catherine Fouache
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Patent number: 6268190Abstract: A method of producing arabitol by continuous fermentation of at least one sugar by micro-organisms producing arabitol, characterised in that arabitol is produced in a first fermentation area including at least one fermenter in such a manner that some of the sugar introduced into the fermentation medium is consumed by said micro-organisms, some of the fermentation medium obtained in this way is transferred into a second fermentation area including at least one fermenter, the volume being maintained constant in the first fermentation area by adding sugar, production of arabitol continues in said second fermentation area in such a manner as to consume the residual sugar of the fermentation medium, the fermentation medium thus obtained from said second fermentation area is separated a continuously into a fraction concentrated in micro-organisms and another, soluble fraction enriched in arabitol, and the arabitol thus obtained is collected.Type: GrantFiled: May 9, 2000Date of Patent: July 31, 2001Assignee: Roquette FreresInventors: Pierrick Duflot, Pierre Lanos, Fabrice Machu, Laurent Segueilha