Hydrogen sulfide gas sensor and precursor compounds for manufact

Details Hydrogen sulfide gas sensor and precursor compounds for manufact Hydrogen sulfide gas sensor and precursor compounds for manufact

1994-02-23

1995-07-18

Beck, Shrive

Coating processes

Electrical product produced

4271261, 4271263, 4273762, B05D 100, B05D 300

Patent

active

054339715

ABSTRACT:
Tungsten carboxylate compounds useful for coating interdigitated electrodes used in hydrogen sulfide gas sensors are disclosed. A method of coating electrodes with the compounds using a precise solution casting technique such as spin-coating or casting, dip-casting or spray-casting techniques is also described. Electrodes which are solution coated with the compounds may be used to fabricate superior quality chemiresistor sensors for use in hydrogen sulfide gas sensing devices by heating the carboxylates above 350.degree. C. to decompose certain carboxylates to WO.sub.3 and others to sodium tungstate.

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patent: 5034246 (1991-07-01), Mance
patent: 5116812 (1992-05-01), Lelental et al.
patent: 5156884 (1992-10-01), Tanitsu et al.

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