Patents by Inventor Charles Durfor

Charles Durfor 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: 6846654
    Abstract: A system for detecting physical or chemical changes in an environment is disclosed. The system comprises means for conducting a chemical reaction; an active biological molecule whose physiological function is noncatalytic which is capable of catalyzing a chemical reaction wherein at least one reactant is converted to one product; and means for sensing and processing information relating to changes in said environment. A method for detecting physical or chemical changes in an environment is also disclosed.
    Type: Grant
    Filed: July 9, 1993
    Date of Patent: January 25, 2005
    Assignee: IGEN International, Inc.
    Inventors: Gary F. Blackburn, Charles Durfor, Michael J. Powell, Richard J. Massey