Patents by Inventor Brian J. Copeland

Brian J. Copeland 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).

  • Patent number: 5037561
    Abstract: The present invention relates to a process to pretreat aqueous biological sludge in order to provide combustibles solids to an autogenous combustion system used to thermally oxidize the sludge.
    Type: Grant
    Filed: April 14, 1989
    Date of Patent: August 6, 1991
    Inventor: Brian J. Copeland