Patents by Inventor Francois Chast

Francois Chast 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 determining hypoacidity
    Patent number: 4661338
    Abstract: A method is provided for rapidly screening candidates for precancerous atrophic H. gastritis by visualizing the presence of a hypoacidity condition of the gastric mucous membrane by applying droplets of an indicator to the stomach wall which indicator undergoes a marked color change in the presence of a hypoacidic condition and then detecting immediately the presence of that color change. The indicator employed is bromocresol green, bromophenol blue or bromochlorophenol blue.
    Type: Grant
    Filed: November 19, 1982
    Date of Patent: April 28, 1987
    Assignee: Societe d'Etudes Scientifiques et Industrielles de l'Ile de France
    Inventors: Francois Besancon, Francois Chast