Patents by Inventor John Daniel Campau

John Daniel Campau 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 for making and treating wall blocks
    Patent number: 6803002
    Abstract: A method for treating the surfaces and edges of a block to mimic the appearance of natural stone. The apparatus and method can treat up to four sides of a block, can be adjusted to provide varying degrees of surface and edge treatment, and useful in high volume block production equipment. Blocks are produced having a natural, weathered appearance without the damage, breakage, dust, or expense associated with conventional splitting and tumbling methods.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: October 12, 2004
    Assignee: Keystone Retaining Wall Systems, Inc.
    Inventors: Antal Z. Suto, John A. Campau, John Daniel Campau, Donald L. Reuschel, Robert A. MacDonald
  • Apparatus and method for making and treating wall blocks
    Publication number: 20030214069
    Abstract: An apparatus and a method for treating the surfaces and edges of a block to mimic the appearance of natural stone. The apparatus and method can treat up to four sides of a block, can be adjusted to provide varying degrees of surface and edge treatment, and useful in high volume block production equipment. Blocks are produced having a natural, weathered appearance without the damage, breakage, dust, or expense associated with conventional splitting and tumbling methods.
    Type: Application
    Filed: May 17, 2002
    Publication date: November 20, 2003
    Inventors: Antal Z. Suto, John A. Campau, John Daniel Campau, Donald L. Reuschel, Robert A. MacDonald