Patents by Inventor Craig O. Thomas

Craig O. Thomas 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).

  • Cementitious composite that includes delignified cellulosic material and process of making it
    Patent number: 5196061
    Abstract: A cementitious composite of delignified cellulosic debris and Portland cement is produced from waste sludge from a paper recycling process and combining the resultant material in particle sizes ranging from 0.06 to 25 mm with Portland cement.
    Type: Grant
    Filed: April 26, 1990
    Date of Patent: March 23, 1993
    Inventors: Robert C. Thomas, Craig O. Thomas