Patents by Inventor Peter D. Thomas

Peter D. 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).

  • Monitoring sheet material
    Patent number: 4718026
    Abstract: Inorganic constituents of cigarette paper are identified and monitored by scanning a region of the infra red spectrum of the paper, computing first and second order derivatives of the scan, comparing the first and second order derivatives by a best fit comparison with reference spectral data, and computing concentrations in the paper of the identified inorganic constituents.
    Type: Grant
    Filed: May 25, 1984
    Date of Patent: January 5, 1988
    Assignee: Imperial Group, PLC
    Inventors: Terence M. Long, David J. Newman, Peter D. Thomas