Patents by Inventor Daniel Samain

Daniel Samain 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).

  • Patent number: 10207287
    Abstract: The invention relates to a machine for chromatogenous grafting treatment of a scrolling substrate (S) having a hydroxylated face (Fh), comprising: an application device (3) of a grafting reagent on the hydroxylated face (Fh) of the substrate, a heating roller (4) for the development of the grafting reaction on the hydroxylated face (Fh) of the substrate, said roller (4) being provided with a bar-end system (5a, 5b) for applying a face of the substrate (S) against said heating roller (4), an extraction device (6) of the hydrochloric acid produced during the grafting reaction, an application device (7) of an air knife on the treated face of the substrate for eliminating the residual grafting reagent. The invention also relates to a chromatogenous grafting process used in said machine.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: February 19, 2019
    Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS), CENTRE TECHNIQUE DU PAPIER
    Inventors: Daniel Samain, David Guerin, André Lemaitre, Laurent Lyannaz, Jean-Luc Guillouty
  • Patent number: 9297115
    Abstract: A process for treating a solid substrate coupled to a polyol, wherein said polyol bears free hydroxyl groups, comprising the grafting of at least one fatty acid having an aliphatic chain comprising at least 12 carbon atoms onto said solid substrate coupled to a polyol by esterification of at least one free hydroxyl group of said polyol.
    Type: Grant
    Filed: February 4, 2013
    Date of Patent: March 29, 2016
    Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS), CENTRE TECHNIQUE DU PAPIER
    Inventors: Daniel Samain, Camélia Stinga, David Guerin, Markus Schmid, Klaus Noller
  • Patent number: 9255193
    Abstract: Film having liquid-water, grease, gas and water-vapor barrier properties, comprising a PVA film grafted on the surface with a fatty acid.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: February 9, 2016
    Assignees: CENTRE TECHNIQUE DU PAPIER, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS)
    Inventors: Nicoleta Camelia Stinga, Daniel Samain, David Guerin
  • Patent number: 9193851
    Abstract: New cellulose-based composites and production methods thereof, comprising partial peracetylation of cellulose fibers having a degree of crystallinity less than 80%.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: November 24, 2015
    Assignee: Centre National de la Recherche Scientifique
    Inventors: Daniel Samain, Camelia Stinga
  • Publication number: 20150129102
    Abstract: A method for coating a solid substrate, which comprises coating the substrate with a coating slip comprising PVA and particles coupled to the PVA, followed by grafting of fatty acids.
    Type: Application
    Filed: May 15, 2013
    Publication date: May 14, 2015
    Inventors: Daniel Samain, Camélia Stinga
  • Publication number: 20140374044
    Abstract: A process for treating a solid substrate coupled to a polyol, wherein said polyol bears free hydroxyl groups, comprising the grafting of at least one fatty acid having an aliphatic chain comprising at least 12 carbon atoms onto said solid substrate coupled to a polyol by esterification of at least one free hydroxyl group of said polyol.
    Type: Application
    Filed: February 4, 2013
    Publication date: December 25, 2014
    Inventors: Daniel Samain, Camélia Stinga, David Guerin, Markus Schmid, Klaus Noller
  • Publication number: 20140113080
    Abstract: Film having liquid-water, grease, gas and water-vapour barrier properties, comprising a PVA film grafted on the surface with a fatty acid.
    Type: Application
    Filed: December 30, 2013
    Publication date: April 24, 2014
    Applicants: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS), CENTRE TECHNIQUE DU PAPIER
    Inventors: Nicoleta Camelia STINGA, Daniel SAMAIN, David GUERIN
  • Patent number: 8637119
    Abstract: Film having liquid-water, grease, gas and water-vapor barrier properties, comprising a PVA film grafted on the surface with a fatty acid.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: January 28, 2014
    Assignees: Centre Technique du Papier, Centre National de la Recherche Scientifique (CNRS)
    Inventors: Nicoleta Camelia Stinga, Daniel Samain, David Guerin
  • Publication number: 20130236647
    Abstract: The invention relates to a machine for chromatogenous grafting treatment of a scrolling substrate (S) having a hydroxylated face (Fh), comprising: an application device (3) of a grafting reagent on the hydroxylated face (Fh) of the substrate, a heating roller (4) for the development of the grafting reaction on the hydroxylated face (Fh) of the substrate, said roller (4) being provided with a bar-end system (5a, 5b) for applying a face of the substrate (S) against said heating roller (4), an extraction device (6) of the hydrochloric acid produced during the grafting reaction, an application device (7) of an air knife on the treated face of the substrate for eliminating the residual grafting reagent. The invention also relates to a chromatogenous grafting process used in said machine.
    Type: Application
    Filed: November 16, 2011
    Publication date: September 12, 2013
    Applicant: CENTERE TECHNIQUE DU PAPIER
    Inventors: Daniel Samain, David Guerin, André Lemaitre, Laurent Lyannaz, Jean-Luc Guillouty
  • Publication number: 20130199409
    Abstract: New cellulose-based composites and production methods thereof, comprising partial peracetylation of cellulose fibers having a degree of crystallinity less than 80%.
    Type: Application
    Filed: July 8, 2011
    Publication date: August 8, 2013
    Applicant: Centre National de la Recherche Scientifique (CNRS)
    Inventors: Daniel Samain, Camelia Stinga
  • Patent number: 8252921
    Abstract: The invention relates to a method for the controlled oxidation of oligo- and/or polysaccharides containing free —CH2OH primary hydroxyl groups, using an oxidizing agent. The invention is characterized in that the oxidation reaction is performed in a densified fluid which is inert in relation to the oxidizing agents employed. The invention is suitable for use, for example, in the food, paint, paper, textile, agricultural and pharmaceutical industries, in the medical, biomedical or paramedical fields, in the surgical field, in the cosmetic industry and as agents for the complexing or sequestering of metal ions, heavy metals and radioactive elements in the nuclear industry.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: August 28, 2012
    Assignees: Centre National de la Recherche Scientifique (CNRS), Institute National Polytechnique de Toulouse
    Inventors: Michel Vignon, Suzelei Montanari, Daniel Samain, Jean-Stéphane Condoret
  • Publication number: 20110014458
    Abstract: Film having liquid-water, grease, gas and water-vapour barrier properties, comprising a PVA film grafted on the surface with a fatty acid.
    Type: Application
    Filed: December 22, 2008
    Publication date: January 20, 2011
    Applicants: CENTRE TECHNIQUE DU PAPIER, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE(CNRS)
    Inventors: Nicoleta Camelia Stinga, Daniel Samain, David Guerin
  • Publication number: 20080194805
    Abstract: The invention relates to a method for the controlled oxidation of oligo- and/or polysaccharides containing free —CH2OH primary hydroxyl groups, using an oxidising agent. The invention is characterised in that the oxidation reaction is performed in a densified fluid which is inert in relation to the oxidising agents employed. The invention is suitable for use, for example, in the food, paint, paper, textile, agricultural and pharmaceutical industries, in the medical, biomedical or paramedical fields, in the surgical field, in the cosmetic industry and as agents for the complexing or sequestering of metal ions, heavy metals and radioactive elements in the nuclear industry.
    Type: Application
    Filed: July 29, 2005
    Publication date: August 14, 2008
    Inventors: Michel Vignon, Suzelei Montanari, Daniel Samain, Jean-Stephane Condoret
  • Patent number: 6759060
    Abstract: A synthetic particulate vector comprising a non-liquid hydrophilic nucleus which does not have an external lipid layer grafted thereon. A method for preparing a particulate vector by encapsulating an ionizable active principle, vectors obtainable through said method, and pharmaceutical, cosmetological or food compositions containing such vectors are also disclosed.
    Type: Grant
    Filed: July 9, 1998
    Date of Patent: July 6, 2004
    Assignee: Biovector Therapeutics, S.A.
    Inventors: Daniel Samain, Igancio De Miguel, Frédérique N'guyen, Pascal Delrieu, Li Ding, Nadine Candelotto, Corinne Segreto, Didier Betbeder, Roger Kravtzoff, Michel Major
  • Publication number: 20030036518
    Abstract: The invention concerns an artificial membranous structure analogous to fixed plasmic membranes which comprise a solid substrate (61); a functional membrane (63) which does not circumscribe the external medium; and at least one bifunctional fixing compound (62) inserted between the membrane (63) and the substrate (61), cooperating by polyelectrolytic complexing with the substrate (61) and by lyotropic bonds with the membrane (63). The invention also concerns the use of this structure for obtaining a medicament, a particle, a film, its method of preparation, as well as a lipidic polycationic polymer, and a method for its preparation, acting as a bifunctional compound (62).
    Type: Application
    Filed: April 20, 1999
    Publication date: February 20, 2003
    Inventors: DANIEL SAMAIN, ETIENNE PEROCHON
  • Publication number: 20020168408
    Abstract: A synthetic particulate vector comprising a non-liquid hydrophilic nucleus which does not have an external lipid layer grafted thereon. A method for preparing a particulate vector by encapsulating an ionizable active principle, vectors obtainable through said method, and pharmaceutical, cosmetological or food compositions containing such vectors are also disclosed.
    Type: Application
    Filed: July 9, 1998
    Publication date: November 14, 2002
    Inventors: DANIEL SAMAIN, IGANCIO DE MIGUEL, FREDERIQUE N'GUYEN, PASCAL DELRIEU, LI DING, NADINE CANDELOTTO, CORINNE SEGRETO, DIDIER BETBEDER, ROGER KRAVTZOFF, MICHEL MAJOR
  • Patent number: 6342268
    Abstract: A solid material is treated, the chemical structure of which defines reactive protogenic hydrophillic functions accessible to gases, by applying at least one gas stream (3) onto at least one microdispersion (5) of at least one grafting reagent RX produced on the solid material, R being a hydrophobic group, X being chosen so that HX is volatile under normal conditions, R and X being chosen so that the reaction of RX on the hydrophillic functions produces covalent grafting of the hydrophobic group R with formation of the compound HX, it being possible for the reaction to be carried out in a solid/gas heterogeneous medium on all the reactive hydrophillic functions accessible to gases and only on these. The invention extends to the hydrophobic solid material obtained, and is applicable to the obtaining of natural or artificial fibrous or inorganic structures impermeable to water and to aqueous solutions and/or absorbing fats.
    Type: Grant
    Filed: February 14, 2000
    Date of Patent: January 29, 2002
    Inventor: Daniel Samain
  • Patent number: 6013284
    Abstract: A synthetic particulate vector comprising a non-liquid hydrophilic nucleus and an outer layer at least partially consisting of amphiphilic compounds, which is combined with the nucleus by hydrophobic interactions and/or ionic bonds. A process for preparing a particulate vector by encapsulating an ionizable active principle, vectors obtained according to such a process, and pharmaceutical, cosmeticological and food compositions comprising such vectors are also disclosed.
    Type: Grant
    Filed: May 1, 1996
    Date of Patent: January 11, 2000
    Assignee: Biovector Therapeutics S.A.
    Inventors: Daniel Samain, Pascal Delrieu, Joelle Gibilaro, Roselyne Dirson, Monique Cervilla, Ignacio De Miguel, Li Ding, Frederique Nguyen, Nadine Soulet, Corinne Soler
  • Patent number: 5968794
    Abstract: A biodegradable particulate vector for transporting biologically active molecules is prepared containing a nucleus formed of a cross-linked polysaccharide or oligosaccharide matrix having grafted ionic ligands, a layer of fatty acid compounds covalently bonded to the nucleus and a layer of phospholipids hydrophobically bonded to the layer of fatty acid compounds. Dextran, cellulose or starch may be cross-linked with epichlorohydrin to form a cross-linked polysaccharide matrix. Ionic ligands may be grafted using an acidic compound such as succinic acid, phosphoric acid or phosphorous oxychloride, or a basic compound such as choline, hydroxycholine, 2-(dimethylamino)ethanol or 2-(dimethylamino) ethylamine fastened onto the grafted acidic compound. Phosphoric acid or phosphorous oxychloride in one step provide both cross-linking and ionic ligands. Co-cross-linking can be obtained using a protein such as keratin, collagen or elastase.
    Type: Grant
    Filed: January 23, 1998
    Date of Patent: October 19, 1999
    Assignee: Biovector Therapeutics S.A.
    Inventors: Daniel Samain, Ignacio De Miguel, Jaouad Meniali, Karim Ioualalen, Li Ding, Monique Cervilla, Valerie Rieumajou, Pascal Delrieu, Laurent Imbertie
  • Patent number: 5891475
    Abstract: The invention relates to a particulate vector, characterized in that it comprises, from the inside to the outside, a non-liquid hydrophilic core, an external layer comprised of lipid compounds grafted on the core by covalent bonds. The invention also relates to a pharmaceutical composition containing such vectors, as well as to a process for enhancing the activity of the polypeptide cellular mediator.
    Type: Grant
    Filed: January 31, 1996
    Date of Patent: April 6, 1999
    Assignees: Institut Pasteur, Biovectors Therapeutics S.A.
    Inventors: Pierre Perrin, Daniel Samain, Nathalie Castignolles