Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1997-09-29
1999-06-29
Marquis, Melvyn I.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524588, 524398, 524399, 524435, 524434, 524430, 524437, 524432, 524406, 524413, 524408, 524423, 524425, 524448, 524440, 524441, 524445, 524449, 524451, 524 35, 525420, 525487, C08K 504
Patent
active
059169443
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 a filler onto the electronic device, wherein the filler is one which reacts in an oxidizing atmosphere to liberate enough heat to damage 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.
REFERENCES:
patent: 3986997 (1976-10-01), Clark
patent: 4749631 (1988-06-01), Haluska
patent: 4756977 (1988-07-01), Haluska
Camilletti Robert Charles
Haluska Loren Andrew
Michael Keith Winton
Dow Corning Corporation
Gobrogge Roger E.
Marquis Melvyn I.
Milstead Mark W.
Severance Sharon K.
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