Patents by Inventor Alan Leitch

Alan Leitch 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).

  • Optical-fibre smoke detection/analysis system
    Patent number: 4839527
    Abstract: A sensor system for the detection and/or analysis of smoke, gas or the like, comprising a detection means 6 connected to an analyser means 2 via fiber-optic links 3, 11 and 12. The detector 6 determines the presence of smoke, gas or the like, while the analyzer 2 analyzes the composition of the smoke, gas or the like. The exact location and nature of the smoke, gas or fire can therefore be determined with the aid of suitable associated circuitry 9.
    Type: Grant
    Filed: October 27, 1987
    Date of Patent: June 13, 1989
    Inventor: Alan Leitch