Patents by Inventor Stephen Krefman

Stephen Krefman 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).

  • Non-aqueous washing machine with modular construction
    Publication number: 20050155393
    Abstract: The invention relates to a non-aqueous washing machine, methods of using the machine, methods of washing, and recycling and modular components and subsystems thereof.
    Type: Application
    Filed: October 22, 2004
    Publication date: July 21, 2005
    Inventors: Tremitchell Wright, Daniel Conrad, Stephen Krefman, Joel Luckman, Richard Sunshine, Andrew Leitert