Patents Assigned to Institut Francais de Recherche pour l'Exploitation de la Mer
  • High-resolution seismic acquisition device
    Patent number: 6366536
    Abstract: The invention relates to a seismic acquisition device in a marine environment. The device comprises a Janus Helmholtz (12) transducer which is able to operate at a large depth of immersion and to sound waves in a wide frequency band, a calculator (13) to program at will the frequency band and the form of the sound waves emitted by the transducer, a power amplifier (14) that can control the transducer in order to provide the emitted sound waves with predetermined power levels, an impedance adapter (16) placed between the transducer (12) and the amplifier to enable wide band and power adaptation, and a receiver (18) to capture the seismic waves reflected by the different layers of the sea bed.
    Type: Grant
    Filed: March 19, 2001
    Date of Patent: April 2, 2002
    Assignees: Total Fina Elf S.A., Etudes et Recherches Realisations Mecaniques et Electroniques (Eramer), Institut Francais de Recherche pour l'Exploitation de la Mer(Ifremer)
    Inventors: Thierry Des Vallieres, Jacques Meunier, Gilles Grosso
  • Method for obtaining sulphated polysaccharides
    Patent number: 6028191
    Abstract: A method for obtaining sulphated polysaccharides using the free radical depolymerization of a fucan from Phaeophyceae in the presence of a metal catalyst and of hydrogen peroxide is described. The method of the invention provides polysaccharide fractions with a molecular weight of 10,000 g/mol or less, with anticoagulant properties.
    Type: Grant
    Filed: May 6, 1998
    Date of Patent: February 22, 2000
    Assignees: Centre National de la Recherche Scientifique (CNRS), Institut Francais de Recherche Pour L'Exploitation de la Mer (Ifremer)
    Inventors: Alain Nardella, Frederic Chaubet, Corinne Sinquin, Sylvia Colliec Jouault, Catherine Boisson-Vidal, Patrick Durand, Jacqueline Jozefonvicz
  • Immunodiagnosis of parasitoses due to a protozoon in mollusks
    Patent number: 5601987
    Abstract: This invention relates to a monoclonal antibody which specifically recognises an antigen of a protozoon parasitizing a mollusk.Application: immunodiagnosis of parasitoses due to a protozoon in mollusks.
    Type: Grant
    Filed: April 25, 1988
    Date of Patent: February 11, 1997
    Assignees: Sanofi, Institut Francais de Recherche pour L'Exploitation de la mer - Ifermer
    Inventors: Henri Grizel, Eric Mialhe, Francis Paolucci, Herv e Rogier
  • Sulphated polysaccharides, anticoagulant agent and anticomplementary agent obtained from brown algae fucuses and method of obtaining same
    Patent number: 5321133
    Abstract: The invention relates to sulphated polysaccharides obtained from fucuses extracted from pheophyceae. The molecular weight of these polysaccharides is greater than 5 and less than 40 Kda; their sulphur content is greater than that of the original fucus and they contain less than 0.15% of contaminant proteins. Applications as anticoagulant and anticomplementary agents.
    Type: Grant
    Filed: January 16, 1992
    Date of Patent: June 14, 1994
    Assignee: Institut Francais de Recherche pour l'Exploitation de la Mer-IFREMER
    Inventors: Sylvia Colliec, Jacqueline Bretaudiere, Patrick Durand, Anne-Marie Fischer, Jacqueline Jozefonvicz, Bernard Kloareg, Catherine Vidal
  • Intensive shrimp breeding process
    Patent number: 4640227
    Abstract: The invention relates to processes for intensive shrimp breeding, in tanks here a small proportion of the water is renewed, with a view to obtaining the growth of post-larvae more than 12-days old. Before placing the post-larvae in the tank, the water is prepared by filling up the tank progressively and adding daily to that water an artificial food containing nitrobenous organic products until flocs, formed of heterotroph and nitrifying bacteria and phytoplanktons, are obtined, serving as a complement of food to the shrimps which are fed with artificial food.
    Type: Grant
    Filed: December 19, 1985
    Date of Patent: February 3, 1987
    Assignee: Institut Francais de Recherche pour l'Exploitation de la Mer - IFREMER
    Inventors: Jean-Paul Blancheton, Jacques Calvas, Alain H. Michel, Vincent Vonau