"Functionality and control systems for ozone generators" UK 9811638.7
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"Monitoring multi-electrode gas sensors (time evolution of signal)" UK 9706193.1
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"Multi-electrode gas sensors and methods for making use of them" with D E Williams WO 97/23777
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"Fire detector and a method of detecting a fire", WO 93/08550
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"Semiconducting oxide gas sensors and materials thereof" with D E Williams and P T Moseley WO 95/00836
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"Resistive gas sensing, especially for ozone (tungsten oxide with up to 1% impurity)" with P T Moseley and D E Williams US 5811662
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"Resistive gas sensing, especially for ozone (tungsten oxide with up to 1% impurity)" with P T Moseley and D E Williams WO95/35495
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"Resistive gas sensing, especially for ozone (tungsten oxide with up to 1% impurity)" with P T Moseley and D E Williams GB 2305730
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"Oxygen sensor materials" with D E Williams and B C Tofield EP 062994
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"Oxygen sensor materials" with D E Williams and B C Tofield US 4454494
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"Oxygen sensor materials" with D E Williams and B C Tofield US 4677414
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"Sensing gaseous substances with arrays of different materials", with P T Moseley and D E Williams, EP 0609316
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"Transducers (tin oxide microstructure for sensitivity adjustment)", with G V Planer, GB 2249179
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"Transducer elements (tin oxide plus catalysts)", with G V Planer GB 2248306
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" Ammonia sensor", with D E Williams. P T Moseley and B C Tofield GB 2202948
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"Sensing" with D E Williams and B C Tofield, GB 2149120 (1988)
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"Sensor" with P T Moseley and D E Williams GB 2198844 (1988)
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"Ceramic coatings" GB 2138321 (1986)
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"Improvements in or relating to sensors", with D E Williams and B C Tofield GB 2149121 (1985)
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"Improvements in or relating to sensors", with D E Williams and B C Tofield GB 2149122 (1985)
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"Improvements in or relating to sensors", with D E Williams and B C Tofield GB 2149123 (1985)
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"Fabrication of ceramic materials" GB 2109782, with D Gilling, A Hooper and B C Tofield (1983)
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"Improvements in or relating to the preparation on ion conductors", UK 2052462 (1981)
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"Exchanged b-alumina (rubidium route)" GB P. 8135090 (with
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D Gilling, A Hooper and B C Tofield) (1981)
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"Preparation of materials", with K T Harrison and B C Tofield, US 4322485 (1979)
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