Chemistry: analytical and immunological testing – Process or composition for determination of physical state... – Surface area – porosity – imperfection – or alteration
Patent
1988-01-15
1988-09-27
Marcus, Michael S.
Chemistry: analytical and immunological testing
Process or composition for determination of physical state...
Surface area, porosity, imperfection, or alteration
250362, 2504591, 428418, 428901, G01N 2164, B32B 1508, B32B 2738
Patent
active
047741880
ABSTRACT:
Circuit boards with advantageous properties are produced through the addition of a fluorescent dye. The presence of the dye allows an expeditious inspection of the metallic pattern on the circuit board by induced fluorescence.
REFERENCES:
patent: 3617744 (1971-11-01), Irish
patent: 4016133 (1977-04-01), Hyosu et al.
patent: 4152723 (1979-05-01), McMahon et al.
patent: 4400618 (1983-08-01), Bupp et al.
American Telephone and Telegraph Company AT&T Bell Laboratories
Marcus Michael S.
Schneider Bruce S.
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