Patents by Inventor Wilfred Schmieder

Wilfred Schmieder 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).

  • Pressurized-gas pack and propellant for aerosols
    Patent number: 5620631
    Abstract: The invention relates to a pressurized-gas pack, in particular an aerosol pressurized-gas pack, containing pressure-liquefied 2-hydro-heptafluoropropane (F 227) or a mixture thereof with pressure-liquefied propane and/or n-butane and/or i-butane and/or dimethyl ether and/or 1,1-difluoroethane. The invention also relates to a propellant for aerosols, comprising F 227 or the named mixtures thereof.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: April 15, 1997
    Assignee: Solvay (Societe Ananyme)
    Inventors: Elmar Heiskel, Wilfred Schmieder