Patents by Inventor Theophilis A. Devagnanam

Theophilis A. Devagnanam 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).

  • Composition and process for making building bricks and tiles
    Patent number: 6440884
    Abstract: Building bricks and tiles are made by mixing 60% to 75% clay, 20% to 40% sludge and 1% to 10% sand, all percentages being by weight of the total composition. This process utilizes industrial waste products to provide building materials which are lighter and stronger than conventional materials.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: August 27, 2002
    Inventor: Theophilis A. Devagnanam