Patents by Inventor Philipp Kreiner

Philipp Kreiner 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).

  • Rotary aerator
    Patent number: 3960991
    Abstract: A rotary aerator is mounted for rotation about a horizontal axis and has a plurality of agitator elements formed integrally with hub segments to provide generally star-shaped members which extend radially from the circumference of the aerator along the length thereof for introducing air or other gases into waste water or other fluids.
    Type: Grant
    Filed: June 3, 1974
    Date of Patent: June 1, 1976
    Assignee: Passavant-Werke Michelbacher Hutte
    Inventors: Walti Schmitt, Philipp Kreiner