Patents by Inventor Hans Karl Schmoldt

Hans Karl Schmoldt 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).

  • Method and apparatus for reducing air borne allergens in evaporative air coolers
    Patent number: 6609386
    Abstract: The invention relates to a method and apparatus for reducing air borne allergens in evaporative air coolers. In another aspect the invention relates to a method for reducing the cost of operating evaporative air coolers.
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: August 26, 2003
    Inventor: Hans Karl Schmoldt