Patents by Inventor Hartnut Meinert

Hartnut Meinert 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).

  • Apparatus for determining the carbon dioxide content of a liquid, especially a beverage
    Patent number: 4276769
    Abstract: An apparatus for measuring the carbon dioxide content of fluids, especially beer, is described in which there are two pistons disposed on either side of an expansion chamber, the pistons being in cylinders of different displacement volumes, the pistons being displaceable axially together to effect expansion whereby equilibrium between carbon dioxide in gas and in fluid is established thereby permitting, via pressure measurements, a determination of the carbon dioxide content of a fluid sample.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: July 7, 1981
    Inventors: Dieter Wieland, Hartnut Meinert