Patents by Inventor Ralph Michael Schmidt

Ralph Michael Schmidt 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).

  • Water purification apparatus
    Patent number: 6416662
    Abstract: A liquid purification apparatus having a main body having means to allow liquid to enter the main body is disclosed. An exit means allows exit of liquid from the main body. A solid compound is located within the main body for dissolution by the liquid. Means cooperating with the solid compound expose a substantially consistent surface area of the compound to the liquid.
    Type: Grant
    Filed: August 1, 2001
    Date of Patent: July 9, 2002
    Assignee: Austech Limited
    Inventor: Ralph Michael Schmidt