Patents by Inventor Jacques Gilain

Jacques Gilain 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).

  • Process for extracting poly-beta-hydroxybutyrates by means of a solvent from an aqueous suspension of microorganisms
    Patent number: 4705604
    Abstract: A process for extracting poly-beta-hydroxybutyrates from an aqueous suspension of microorganisms, in which an azeotropic distillation, and an extraction of the polymer by means of the solvent used, are carried out simultaneously.The poly-beta-hydroxybutyrates obtained can be used in medicine.
    Type: Grant
    Filed: June 19, 1985
    Date of Patent: November 10, 1987
    Assignee: Solvay & Cie. (Societe Anonyme)
    Inventors: Noel Vanlautem, Jacques Gilain
  • Process for the manufacture of .beta.-hydroxybutyric acid and its oligocondensates
    Patent number: 4365088
    Abstract: Poly-.beta.-hydroxybutyrates obtained by biosynthesis are hydrolyzed in a reaction mixture containing poly-.beta.-hydroxybutyrates, water and an acid catalyst, in a solvent.
    Type: Grant
    Filed: July 2, 1981
    Date of Patent: December 21, 1982
    Assignee: Solvay & Cie
    Inventors: Noel Vanlautem, Jacques Gilain
  • Process for separating poly-.beta.-hydroxybutyrates from a biomass
    Patent number: 4310684
    Abstract: A process for separating poly-.beta.-hydroxybutyrates from a biomass by extraction using at least one liquid halogenated solvent selected from the group consisting of chloroethanes and chloropropanes.
    Type: Grant
    Filed: January 4, 1980
    Date of Patent: January 12, 1982
    Assignee: Solvay & Cie.
    Inventors: Noel Vanlautem, Jacques Gilain
  • Process for the manufacture of salts of hydroxycarboxylated polymers of reduced molecular weight
    Patent number: 4182807
    Abstract: Process for the manufacture of salts of hydroxycarboxylated polymers of reduced molecular weight, starting from the corresponding polymer salts of higher molecular weight, comprises reacting the polymer salt of higher molecular weight with an oxidizing agent in the presence of a solvent.
    Type: Grant
    Filed: April 18, 1978
    Date of Patent: January 8, 1980
    Assignee: Solvay & Cie.
    Inventors: Noel Vanlautem, Julien Mulders, Jacques Gilain
  • Process for depolymerizing hydroxycarboxylic polymers
    Patent number: 4145526
    Abstract: Process for obtaining hydroxycarboxylic polymers of reduced molecular weight from corresponding polymers of higher molecular weight, comprising heating the polymer of higher molecular weight in a gaseous medium to a temperature of between 60.degree. and 240.degree. C.
    Type: Grant
    Filed: January 9, 1978
    Date of Patent: March 20, 1979
    Assignee: Solvay & Cie
    Inventors: Noel Vanlautem, Jacques Gilain
  • Method of preparing salts of poly-alpha-hydroxyacrylic acid
    Patent number: 4107411
    Abstract: Salts of poly-.alpha.-hydroxyacrylic acid or their alkyl derivatives are obtained by thermally dehydrochlorinating .alpha., .beta.-dichloro-propionic acid or its alkyl derivatives into the corresponding .alpha.-chloroacrylic acid, polymerizing the .alpha.-chloroacrylic acid in water to obtain a solid product and neutralizing the solid product with an aqueous solution of alkali metal hydroxide or ammonium hydroxide.The poly-.alpha.-hydroxyacrylates are useful as sequestering agents or builders.
    Type: Grant
    Filed: October 15, 1975
    Date of Patent: August 15, 1978
    Assignee: Solvay & Cie.
    Inventors: Julien Mulders, Jacques Gilain