Capteur Sensors and Analysers Limited

United Kingdom Atomic Energy Authority

Lucas Industries Limited

University College Cork

Peter McGeehin

David Edward Williams

Gerald Christopher O'Sullivan

Declan Soden

Alan Hooper

Patrick Timothy Moseley

Patrick T Moseley

Anthony Morrissey

Bruce C Tofield

Andrew Watson

Denton A M Prior

John Piggott

Geoffrey Stephen Henshaw

Darryl Hirst Dawson

Laura Jane Gellman

Colum Dunne

Keith T Harrison

Christopher Collins

John 236 The Sweepstakes Piggott

Colum 23 Richview Dunne

Gerald"Cuan Baoi" O'SULLIVAN

Denton The Cottage Prior

Apparatus () for carrying out a prophylactic or treatment procedure on tissue comprises a device () having a chamber () and at least one active element such as an electrode () within the chamber (). The chamber () has an opening () through which tissue is drawn into the chamber (). Means for drawing the tissue into the chamber may comprise a vacuum lumen with vacuum orifices () in the chamber (). Treatment such as electroporation may be applied to tissue in the chamber ().

Apparatus for use in the prophylaxis or treatment of tissue

The selectivity of response of resistive gas sensors to specific gases or vapors is improved by the selection of specified gas-sensitive materials which are not previously known for the applications described, which include detection of hydrocarbons in the presence of CO, H.sub.2 S, SO.sub.2, chlorine, NO.sub.2, CO.sub.2 (especially in low concentrations), CFC's, ammonia, free oxygen by determination of partial pressures, and numerous organic gases and vapors.

Semiconducting oxide gas sensors

A fire detector, for connection in a fire protection/alarm system, comprises an array of sensors, or a single sensor, of the semiconductor resistor type impregnated with a noble metal. The detector is responsive, by way of a decrease in its resistance, to an increase in any one or more parameters indicative of a fire, namely the atmospheric concentrations of carbon monoxide, hydrogen and water vapor, and temperature, so that a fire is detected regardless of which of these indicators is present. The sensor responds to all of the parameters, and the output signal simultaneously represents changes in all the parameters.

Semiconductor sensors and method for detecting fires using such sensors

Resistive gas sensing, especially for detection of ozone

A moisture sensor which includes a moisture sensitive material and electrodes in communication with the moisture sensitive material, the moisture sensitive material containing a substantially electrically insulating substance derived from a colloidal dispersion and, distributed in or on the substance, an electrically conducting substance.

Sensors

An oxygen sensor which exhibits a change in electrical resistance as a function of oxygen partial pressure comprises at least one of strontium ferrate, barium ferrate and strontium barium ferrate, in which part of the iron in the ferrate lattice has been replaced by at least one element of valency greater than 3, such as titanium, cerium, niobium or tantalum.

Oxygen sensors

The present invention relates to the preparation of materials and finds one application in the preparation of ion conductors and precursors therefor. There is disclosed a process for use in the preparation of a material of the general formula

Preparation of materials

Growing community of inventors

Newbury, United Kingdom

Peter McGeehin