Coating Material and method for providing asset protection

Details Coating Material and method for providing asset protection Coating Material and method for providing asset protection

1997-11-24

2000-05-09

Lam, Cathy F.

Stock material or miscellaneous articles

Composite

Of metal

428916, 361751, 361760, 361765, B32B 1504, H05K 116

Patent

active

060601698

ABSTRACT:
A material and a method for forming a tamper-indicating identification coating are provided. The components of the coating are selected such that the coating exhibits a characteristic absorption spectrum with distinct features in individual regions during Fourier-transform infra-red (FTIR) spectroscopy. The coating components are selected to provide a distinct spectrum while, at the same time, providing a sufficiently complex spectrum such that the coating is difficult to duplicate. Also, a blowing agent in the coating decomposes to change the FTIR spectrum due to the heat associated with resoldering of an out-of-warranty electronic part marked with the identification coating to an in-warranty circuit card. In addition, the coating may contain a fluorophore to reveal the presence of a tamper-indicating identification coating, allowing a manufacturer to check the card by exposure with ultra-violet (UV) light. Further, the coating composition may be changed periodically and tracked to provide a date marker.

REFERENCES:
patent: 4326239 (1982-04-01), Ohsawa et al.
patent: 4738949 (1988-04-01), Sethi et al.
patent: 5309326 (1994-05-01), Minoru
patent: 5528368 (1996-06-01), Lewis et al.

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