Patents Assigned to Lucien Etzlinger
  • Method and reagent for determining the ethyl alcohol content of a gas
    Patent number: 4105409
    Abstract: The invention concerns a reagent for determining the ethyl alcohol content of a gas, particularly human breath, by means of a color reaction. This reagent consists of a mixture of iodine pentoxide, a colorless metal nitrate or concentrated nitric acid, and 75-98% sulphuric acid, the original white color of the reagent changing to pink, brown or black depending on the ethyl alcohol content of the gas. In a preferred embodiment of the invention, the reagent is placed in a tube for use in connection with drunken driving.
    Type: Grant
    Filed: April 29, 1977
    Date of Patent: August 8, 1978
    Assignees: Lucien Etzlinger, Carl Wilhelm Koelker, Claus H. Grossman, Multi-Marketing Services AG.
    Inventors: Denys Monnier, Pierre Bolle