Patents by Inventor William Helbert

William Helbert 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).

  • Method for transforming iota-carrageenan into alpha-carrageenan by means of a new class of 4S-iota-carrageenan sulfatase
    Patent number: 8921078
    Abstract: A method for transforming iota-carrageenan into alpha-carrageenan by a new class of 4S-iota-carrageenan sulfatase. The invention also relates to carrageenans obtained by the conversion method. The invention can be especially applied to the agro-food, pharmaceutical and cosmetic industries.
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: December 30, 2014
    Assignee: Centre National de la Recherche Scientifique-CNRS
    Inventors: William Helbert, Aurelle Prechoux, Sabine Genicot-Joncour
  • 3S-RHAMNOSE-GLUCURONYL HYDROLASE, METHOD OF PRODUCTION AND USES
    Publication number: 20140302561
    Abstract: The present invention relates in particular to proteins, coding nucleic acid sequences for same, vectors comprising said coding sequences, a method for producing said proteins, and an oligosaccharide hydrolysis method using same. In particular, the invention relates to the protein of sequence SEQ ID no. 1. The present invention can be applied to the recycling of bio-natural resources formed by organisms and microorganisms including ulvans, in particular green algae.
    Type: Application
    Filed: September 14, 2012
    Publication date: October 9, 2014
    Applicants: UNIVERSITÉ PIERRE ET MARIE CURIE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE- CNRS, CENTRE D'ÉTUDE ET DE VALORISATION DES ALGUES
    Inventors: Pi Collen, William Helbert, Yannick Lerat, Jean-François Sassi
  • Porphyranases, and use thereof for hydrolyzing polysaccharides
    Patent number: 8759039
    Abstract: The present invention relates to the isolation and to the characterization of two proteins having a novel enzymatic activity, i.e. a porphyranase activity. These proteins are useful for hydrolyzing polysaccharides containing sulfated agaro-colloids and for producing oligo-porphyrans, notably oligo-porphyrans with a defined structure and size.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: June 24, 2014
    Assignee: Centre National de la Recherche Scientifique (C.N.R.S.)
    Inventors: Jan-Hendrik Hehemann, Gaëlle Correc, Gurvan Michel, Tristan Barbeyron, William Helbert, Mirjam Czjzek
  • Ulvan lyase, method for manufacturing same, and uses thereof
    Patent number: 8669089
    Abstract: The present invention notably relates to ulvan lyases, to nucleic acid sequences coding for these ulvan lyases, to vectors comprising these coding sequences, to a method of manufacturing these ulvan lyases, as well as to a method of degrading ulvans using these ulvan lyases and applicable applications to the degradation products of the ulvans. The ulvan lyases of the present invention, or ulvanolytic protein, are notably defined as proteins of 30 or 46 kD comprising the following four sequences in their peptide sequence: PNDPNLK, LLEVGNTGTFGSTGS, DLANPDNV and WNLPE.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: March 11, 2014
    Assignees: Centre National de la Recherche Scientifique-CNRS, Centre d'Etude et de Valorisation des Algues-CEVA, Universite Pierre et Marie Curie
    Inventors: William Helbert, Pi Nyvall-Collen, Yannick Lerat, Jean-François Sassi
  • Method for Transforming Iota-Carrageenan Into Alpha-Carrageenan by Means of a New Class of 4S-Iota-Carrageenan Sulfatase
    Publication number: 20130280765
    Abstract: A method for transforming iota-carrageenan into alpha-carrageenan by a new class of 4S-iota-carrageenan sulfatase. The invention also relates to carrageenans obtained by the conversion method. The invention can be especially applied to the agro-food, pharmaceutical and cosmetic industries.
    Type: Application
    Filed: October 17, 2011
    Publication date: October 24, 2013
    Applicant: Centre National De La Recherche Scientifique CNRS
    Inventors: William Helbert, Aurelie Prechoux, Sabine Genicot-Joncour
  • ULVAN LYASE, METHOD FOR MANUFACTURING SAME, AND USES THEREOF
    Publication number: 20130230889
    Abstract: The present invention notably relates to ulvan lyases, to nucleic acid sequences coding for these ulvan lyases, to vectors comprising these coding sequences, to a method of manufacturing these ulvan lyases, as well as to a method of degrading ulvans using these ulvan lyases and applicable applications to the degradation products of the ulvans. The ulvan lyases of the present invention, or ulvanolytic protein, are notably defined as proteins of 30 or 46 kD comprising the following four sequences in their peptide sequence: PNDPNLK, LLEVGNTGTFGSTGS, DLANPDNV and WNLPE.
    Type: Application
    Filed: June 16, 2011
    Publication date: September 5, 2013
    Applicant: UNIVERSITE PIERRE ET MARIE CURIE
    Inventors: William Helbert, Pi Nyvall-Collen, Yannick Lerat, Jean-François Sassi
  • 4S-iota-carrageenan sulfatase and use thereof to obtain alpha-carrageenan
    Patent number: 8420355
    Abstract: The present invention relates to 4S-iota-carrageenan sulfatase and to the use thereof for partially or totally converting the iota-carrageenan into iota-/alpha-carrageenan or alpha-carrageenan. The invention also relates to the method for extracting said enzyme from a Pseudoalteromonas bacteria population or from red marine algae. Finally, the present invention relates to the use of 4S-iota-carrageenan sulfatase to prepare a texturizing agent containing alpha-carrageenan.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: April 16, 2013
    Assignees: Centre National de la Recherche (CNRS), Universite Pierre et Marie Curie (Paris 6)
    Inventors: Sabine Joncour Genicot, William Helbert
  • METHOD FOR DEPOLYMERISING POLYSACCHARIDES BY MEANS OF MECHANICAL MILLING
    Publication number: 20130032650
    Abstract: A method for controlled reduction of the weight average molar mass of a polysaccharide down to a lower and determined weight average molar mass, which method includes a step for mechanical milling of the polysaccharide by a ball mill, until the polysaccharide having the desired weight average molar mass is obtained.
    Type: Application
    Filed: November 29, 2010
    Publication date: February 7, 2013
    Applicants: CENTRE NATIONAL DE RECHERCHE SCIENTIFIQUE - CNRS, INSTITUT FRANCAIS DE RECHERCHE POUR L'EXPLOITATION DE LA MER-IFREMER, UNIVERSITE PIERRE ET MARIE CURIE (PARIS 6 )
    Inventors: Claire Boisset, Tinaig Le Costaouec, Joelle Cozien, Corinne Sinquin, Jacqueline Ratiskol, William Helbert, Gaelle Correc, Veronique Larreta Garde
  • PORPHYRANASES, AND USE THEREOF FOR HYDROLYZING POLYSACCHARIDES
    Publication number: 20120190836
    Abstract: The present invention relates to the isolation and to the characterization of two proteins having a novel enzymatic activity, i.e. a porphyranase activity. These proteins are useful for hydrolyzing polysaccharides containing sulfated agaro-colloids and for producing oligo-porphyrans, notably oligo-porphyrans with a defined structure and size.
    Type: Application
    Filed: July 20, 2010
    Publication date: July 26, 2012
    Applicant: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (C.N.R.S)
    Inventors: Jan-Hendrik Hehemann, Gaëlle Correc, Gurvan Michel, Tristan Barbeyron, William Helbert, Mirjam Czjzek
  • 4S-IOTA-CARRAGEENAN SULFATASE AND USE THEREOF TO OBTAIN ALPHA-CARRAGEENAN
    Publication number: 20120052533
    Abstract: The present invention relates to 4S-iota-carrageenan sulfatase and to the use thereof for partially or totally converting the iota-carrageenan into iota-/alpha-carrageenan or alpha-carrageenan. The invention also relates to the method for extracting said enzyme from a Pseudoalteromonas bacteria population or from red marine algae. Finally, the present invention relates to the use of 4S-iota-carrageenan sulfatase to prepare a texturizing agent containing alpha-carrageenan.
    Type: Application
    Filed: April 22, 2010
    Publication date: March 1, 2012
    Inventors: Sabine Joncour Genicot, William Helbert
  • Cellulose films for screening
    Patent number: 6613528
    Abstract: The invention relates to a ellulose film comprising microfibrillated cellulose and to the use of it for screening of a biological compound and nucleic acids encoding a biological compound.
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: September 2, 2003
    Assignee: Novozymes A/S
    Inventors: William Helbert, Henri Dominique Chanzy, Steffen Ernst, Martin Schulein, Tommy Lykke Husum, Lars Kongsbak
  • Cellulose films for screening
    Publication number: 20030049707
    Abstract: The invention relates to a ellulose film comprising microfibrillated cellulose and to the use of it for screening of a biological compound and nucleic acids encoding a biological compound.
    Type: Application
    Filed: May 20, 2002
    Publication date: March 13, 2003
    Applicant: Novozymes A/S
    Inventors: William Helbert, Martin Schulein, Hanne Dela, Henri Dominique Chanzy, Steffen Ernst, Tommy Lykke Husum, Lars Kongsbak
  • Cellulose films for screening
    Patent number: 6426189
    Abstract: The invention relates to a cellulose film comprising microfibrillated cellulose and to the use of it for screening of a biological compound and nucleic acids encoding a biological compound.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: July 30, 2002
    Assignee: Novozymes A/S
    Inventors: William Helbert, Henri Dominique Chanzy, Steffen Ernst, Martin Schulein, Tommy Lykke Husum, Lars Kongsbak