Patents by Inventor Marvin D. Woerpel

Marvin D. Woerpel 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).

  • Snow making
    Patent number: 4200228
    Abstract: Snow making in which ice nucleating microorganisms are incorporated into the water to initiate crystallization when the water is introduced as fine droplets into the atmosphere which is at a temperature below freezing.
    Type: Grant
    Filed: September 18, 1978
    Date of Patent: April 29, 1980
    Inventor: Marvin D. Woerpel