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US 5,744,244 AGranted
Tamper-proof electronic coatings
AssigneeDow Corning Corporation
InventorsRobert Charles Camilletti, Loren Andrew Haluska, Keith Winton Michael
Life of this patent
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Abstract
Disclosed is a method of forming tamper-proof coatings on electronic devices. The method comprises applying a coating of a silica precursor resin and an inorganic salt onto the electronic device, wherein the inorganic salt is one which reacts with a wet etch to yield an acid or base that damages the electronic device. The coated electronic device is then heated at a temperature sufficient to convert the silica precursor resin to a silica containing ceramic matrix.
Claims12
A method of forming a tamper-proof coating on an electronic device comprising:
- applying a coating composition comprising a silica precursor resin and an inorganic salt onto an electronic device, wherein the inorganic salt is one which reacts with a wet etch to yield an acid or base that damages the electronic device;
- and
- heating the coated substrate at a temperature sufficient to convert the coating composition into a ceramic coating.
Dependencies are inferred from the claim text.