Chemistry: electrical and wave energy – Processes and products – Coating – forming or etching by sputtering
Patent
1992-09-10
1995-01-17
Weisstuch, Aaron
Chemistry: electrical and wave energy
Processes and products
Coating, forming or etching by sputtering
73 3106, 338 34, 427101, 427255, 4273741, 422 95, 422 97, 29620, C23C 1430, C23C 1408, C23C 1434
Patent
active
053823419
ABSTRACT:
This invention relates to solid-state smoke detectors and smoke (fire) alarm systems, and more particularly to a novel and improved smoke-sensitive element comprising a bismuth oxide film deposited on one surface of an electrically insulating material. It also relates to a method of depositing this oxide on a substrate, of heat treatment which provides for a highly smoke-sensitive film, and to smoke detector signal processing circuits.
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Abovian Hrachia V.
Adamian Zaven N.
Aroutiounian Vladimir M.
Barsegyan Ara A.
Movsessian Kurgin R.
Chakansky Michael I.
Weisstuch Aaron
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