Patents by Inventor John Weitfeldt

John Weitfeldt 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).

  • Artificial testing soil and method of testing
    Publication number: 20060160225
    Abstract: An artificial test soil comprises particulate, hair, and fiber components, wherein said particulate component consists of mineral, food, and plant materials, so chosen and proportioned as to correlate to a typical soil found in the home. The test soil may be used to test cleaning products by application of a known amount thereof to a surface, cleaning of said surface, and determination of the amount of said soil removed from said surface.
    Type: Application
    Filed: December 30, 2005
    Publication date: July 20, 2006
    Inventors: Mark Gipp, John Weitfeldt