Patents by Inventor Manuel C. Diaz

Manuel C. Diaz 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).

  • Use of dewatered digested sewerage sludge as the bloating agent
    Patent number: 4943233
    Abstract: A process for manufacturing expanded shale aggregate using dewatered digested sewerage sludge as the bloating agent for the shale and using high-lime blast furnace slag as the fluxing agent to lower the melting temperature of the mix and also using refuse derived fuel as the main fuel in the kiln.
    Type: Grant
    Filed: October 17, 1989
    Date of Patent: July 24, 1990
    Assignee: Recycled Energy, Inc.
    Inventor: Manuel C. Diaz