Patents by Inventor Vincent Wiatz

Vincent Wiatz 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).

  • Publication number: 20230331873
    Abstract: The present invention concerns a method for modifying a polysaccharide material, preferably an amylaceous material, involving a first step of homogeneous solubilisation of said polysaccharide material in an aqueous solvent, followed by a step of homogeneous chemical functionalisation comprising at least one non-crosslinking chemical modification, or at least one crosslinking chemical modification, or a sequence of at least one non-crosslinking chemical modification and at least one crosslinking chemical modification. Secondly, the present invention concerns a modified polysaccharide material, in particular obtained by the method according to the invention, characterised in that it has a novel distribution of the chemical substituents attached to the hydroxyl functions of the anhydroglucose units of said polysaccharide material.
    Type: Application
    Filed: February 24, 2023
    Publication date: October 19, 2023
    Inventors: Solène BOCK, Vincent WIATZ, Thomas GUGLIELMETTI, Joffrey ATTARD
  • Publication number: 20230233686
    Abstract: The invention relates to a water insoluble solid crosslinked dextrin-based matrix, wherein the crosslinking agent is sodium trimetaphosphate (STMP), its use and method of preparation.
    Type: Application
    Filed: June 16, 2021
    Publication date: July 27, 2023
    Inventors: Julien PARCQ, Vincent WIATZ, Maxime INGRET
  • Patent number: 11697745
    Abstract: The subject matter of the invention is a modified starch, characterized in that it exhibits: ?a weight-average molecular weight ranging from 250 000 to 2 000 000 Da; ?a solubility, measured according to a test A, ranging from 50 to 85%. The invention also relates to a process for the manufacture of said starch and to the use thereof in the manufacture of an aqueous binder.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: July 11, 2023
    Assignee: Roquette Freres
    Inventors: Julien Mesnager, Vincent Wiatz
  • Publication number: 20220213230
    Abstract: A method for producing a heat-modified starch, comprising the steps of: (i) preparing a starch milk having a solids content of between 20% and 45% by weight and adding an alkaline agent, so as to obtain a final conductivity of between 4 and 7 mS/cm (ii) filtering the starch milk so as to recover a starch cake; (iii) introducing the starch cake, continuously, into a dryer at the same time as a continuous stream of hot air in order to recover a dried powder; (iv) continuously supplying a turboreactor with the dried powder, and by setting parameters for the speed of rotation of the stirrer, so that the dried powder is continuously centrifuged and conveyed into the turboreactor; (v) recovering the heat-modified starch produced.
    Type: Application
    Filed: May 6, 2020
    Publication date: July 7, 2022
    Inventors: Claude QUETTIER, Vincent WIATZ, Solène BOCK, Jacques LEGRAND
  • Publication number: 20220127383
    Abstract: The invention relates to a method for producing a heat-modified starch, comprising the steps consisting in: (i) preparing a starch milk having a solids content of between 30 and 40%, preferably between 35 and 37% by weight, (ii) adding a solution of an alkaline agent at a weight concentration of between 25 and 35%, preferably of 30%, so as to obtain a conductivity on the milk of between 4 and 7 mS/cm, (iii) ensuring a contact time of between 0.5 and 2 hours, (iv) filtering and drying the starch milk such that the conductivity of the dried starch resuspended at 20% by weight of solids is between 0.7 and 2.5 mS/cm, (v) heating said dried starch so as to bring it to a temperature of more than 180° C. for a residence time of between 10 and 40 minutes, even more preferentially between 15 and 35 minutes.
    Type: Application
    Filed: February 26, 2020
    Publication date: April 28, 2022
    Inventors: Claude QUETTIER, Vincent WIATZ, Solène BOCK, Jacques LEGRAND
  • Publication number: 20210253746
    Abstract: The present invention relates to a novel hydroxypropyl-?-cyclodextrin (HP?CD) and also to a novel process that is of use for producing same. The invention also relates to the use of this HP?CD as an excipient. The invention also relates to an HP?CD for use thereof as a medicament, and more particularly for the treatment or prevention of diseases or conditions related to cholesterol overload and/or storage and/or accumulation in the tissues, and also the consequences thereof, such as certain central nervous system or cardiovascular system ailments.
    Type: Application
    Filed: June 28, 2019
    Publication date: August 19, 2021
    Inventors: Clothilde BUFFE, Joël DELATTRE, Vincent WIATZ
  • Publication number: 20200339705
    Abstract: The present invention concerns a method for modifying a polysaccharide material, preferably an amylaceous material, involving a first step of homogeneous solubilisation of said polysaccharide material in an aqueous solvent, followed by a step of homogeneous chemical functionalisation comprising at least one non-crosslinking chemical modification, or at least one crosslinking chemical modification, or a sequence of at least one non-crosslinking chemical modification and at least one crosslinking chemical modification. Secondly, the present invention concerns a modified polysaccharide material, in particular obtained by the method according to the invention, characterised in that it has a novel distribution of the chemical substituents attached to the hydroxyl functions of the anhydroglucose units of said polysaccharide material.
    Type: Application
    Filed: December 21, 2018
    Publication date: October 29, 2020
    Inventors: Solène BOCK, Vincent WIATZ, Thomas GUGLIELMETTI, Joffrey ATTARD
  • Publication number: 20200308311
    Abstract: The invention relates to a method of producing a heat-modified starch comprising the steps of: (i) preparing a starch milk containing between 30 and 40% by weight, preferably between 35 and 37% by weight, solid matter, (ii) adding a powdery alkaline agent such as to obtain a final conductivity of between 0.7 and 2.5 mS/cm, (iii) ensuring a contact time of between 0.5 and 5 hours, (iv) filtering and drying the starch milk, (v) and heating the dried starch to bring it to a temperature of more than 180° C. for a dwell time of between 8 and 50 minutes, preferably between 10 and 40 minutes, even more preferably between 12 and 35 minutes.
    Type: Application
    Filed: December 20, 2018
    Publication date: October 1, 2020
    Inventors: Solène BOCK, Vincent WIATZ, Claude QUETTIER
  • Publication number: 20200056062
    Abstract: The subject matter of the invention is a modified starch, characterized in that it exhibits: ?a weight-average molecular weight ranging from 250 000 to 2 000 000 Da; ?a solubility, measured according to a test A, ranging from 50 to 85%. The invention also relates to a process for the manufacture of said starch and to the use thereof in the manufacture of an aqueous binder.
    Type: Application
    Filed: June 19, 2019
    Publication date: February 20, 2020
    Inventors: Julien Mesnager, Vincent Wiatz
  • Publication number: 20200040112
    Abstract: The invention relates to a compound of formula I the preparation thereof and the use thereof as monomer for the preparation of polymers.
    Type: Application
    Filed: March 27, 2018
    Publication date: February 6, 2020
    Inventors: Clothilde BUFFE, Jean-Marc CORPART, Vincent WIATZ
  • Patent number: 10370553
    Abstract: A modified starch, exhibits: a weight-average molecular weight ranging from 250 000 to 2 000 000 Da; a solubility, measured according to a test A, ranging from 50 to 85%. A process for the manufacture of the starch and a process to the use thereof in the manufacture of an aqueous binder are also described.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: August 6, 2019
    Assignee: Roquette Freres
    Inventors: Julien Mesnager, Vincent Wiatz
  • Patent number: 10323158
    Abstract: A coating slip includes water, at least one pigment and at least one modified starch, exhibiting: a weight-average molecular weight ranging from 250 000 to 2 000 000 Da; and a solubility, measured according to a test A, ranging from 50 to 85%. A process for the preparation of the slip, and a process for coating paper using this slip are also described.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: June 18, 2019
    Assignee: Roquettes Freres
    Inventors: Julien Mesnager, Vincent Wiatz, Patrick Dauchy, Ludivine Onic
  • Patent number: 10160815
    Abstract: Disclosed is a copolymer of a dextrin and at least two hydrophobic monomers made up of styrene and at least one straight or branched acrylic C1-C4 ester. The invention also relates to the manufacturing method thereof and to the use thereof in paper coating. The copolymer has high dextrin content (>60 wt % relative to the weight of the dextrin and the hydrophobic monomers) so as to favor the biosourced aspect of the material, and provides very good hydrophobicity for the paper sheet.
    Type: Grant
    Filed: August 13, 2015
    Date of Patent: December 25, 2018
    Assignee: Roquette Freres
    Inventors: Julien Parcq, Vincent Wiatz
  • Publication number: 20170275387
    Abstract: Disclosed is a copolymer of a dextrin and at least two hydrophobic monomers made up of styrene and at least one straight or branched acrylic C1-C4 ester. The invention also relates to the manufacturing method thereof and to the use thereof in paper coating. The copolymer has high dextrin content (>60 wt % relative to the weight of the dextrin and the hydrophobic monomers) so as to favor the biosourced aspect of the material, and provides very good hydrophobicity for the paper sheet.
    Type: Application
    Filed: August 13, 2015
    Publication date: September 28, 2017
    Inventors: Julien PARCQ, Vincent WIATZ
  • Publication number: 20150299431
    Abstract: A method for the reactive extrusion of an amylaceous substance in the presence of a polyphosphate serving as a cross-linking agent, to the resulting products, and to the uses thereof. In particular, a method for the reactive extrusion of starch in the presence of a cross-linking agent which is a polyphosphate, in particular sodium trimetaphosphate, which behaves like an effective substitute for glyoxal. The method makes it possible to manage the competition between the destructuring and cross-linking mechanisms of the amylaceous substance. The crystalline phase content of the cross-linked starches is thus controlled in accordance with the specific needs of the final use.
    Type: Application
    Filed: July 30, 2013
    Publication date: October 22, 2015
    Inventors: Julien PARCQ, Rene SAINT-LOUP, Vincent WIATZ
  • Publication number: 20140326166
    Abstract: A modified starch, exhibits: a weight-average molecular weight ranging from 250 000 to 2 000 000 Da; a solubility, measured according to a test A, ranging from 50 to 85%. A process for the manufacture of the starch and a process to the use thereof in the manufacture of an aqueous binder are also described.
    Type: Application
    Filed: November 16, 2012
    Publication date: November 6, 2014
    Applicant: ROQUETTE FRERES
    Inventors: Julien Mesnager, Vincent Wiatz
  • Publication number: 20140329104
    Abstract: A coating slip includes water, at least one pigment and at least one modified starch, exhibiting: a weight-average molecular weight ranging from 250 000 to 2 000 000 Da; and a solubility, measured according to a test A, ranging from 50 to 85%. A process for the preparation of the slip, and a process for coating paper using this slip are also described.
    Type: Application
    Filed: November 16, 2012
    Publication date: November 6, 2014
    Applicant: ROQUETTE FRERES
    Inventors: Julien Mesnager, Vincent Wiatz, Patrick Dauchy, Ludivine Onic