Patents by Inventor Terence Colley

Terence Colley 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).

  • Marking element
    Patent number: 5597238
    Abstract: A marking element for indicating whether a pre-defined temperature condition has been maintained. The marking element comprises a first material capable of flowing above a predetermined temperature separated from a second absorbent material by a barrier layer. The first and second materials are such that when the barrier layer is punctured and the predetermined temperature is exceeded the first material flows along the second material to produce a detectable change.
    Type: Grant
    Filed: June 25, 1993
    Date of Patent: January 28, 1997
    Assignee: Food Guardian Limited
    Inventors: Terence Colley, Stephen Minter, John Carnie