Patents by Inventor Patrick F. Ferreira Dos Santos

Patrick F. Ferreira Dos Santos 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 the production and extraction of polysaccharides from a porphyridium cruentum culture and apparatus for performing the process
    Patent number: 4906746
    Abstract: Process for the production and extraction of polysaccharides from a porphyridium cruentum culture and apparatus for performing the process.This production and extraction process comprises a stage of concentrating the polysaccharides consisting of leaving the culture medium (1) in a photoreactor (22) exposed to sunlight under stagnant conditions and at ambient temperature, leading to the formation of a polysaccharide-rich cream (23) and recovering said cream by skimming, a stage (24) of heating the concentrate obtained at a temperature between 60.degree. and 100.degree. C., a stage of separating the solid and liquid phases formed (26), a stage (30) of precipitating the polysaccharides contained in the liquid phase and a stage (16) of drying the precipitate obtained.
    Type: Grant
    Filed: September 26, 1988
    Date of Patent: March 6, 1990
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Henri Barnier, Patrick F. Ferreira Dos Santos, Claude Gudin, Catherine Thepenier