Chemistry: analytical and immunological testing – Process or composition for determination of physical state... – Surface area – porosity – imperfection – or alteration
Patent
1988-01-19
1990-10-23
Warden, Robert J.
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
049652087
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. If the circuit board is two-sided, to maintain the effectiveness of the dye, a material such as a light scattering composition is added to the circuit board substrate.
REFERENCES:
patent: 4152723 (1979-05-01), McMahon et al.
patent: 4774188 (1988-09-01), Chandross
H. Lee and K. Neville, Handbook of Epoxy Resins, McGraw-Hill, New York (1967), Chapter 11, p. 11.
A. N. Chianciarulo and R. L. Webb in Proceedings of the 23rd Annual Technical Conference, Reinforced Plastics/Composites Division, the Society of the Plastic Industry, Incorporated, 1968, Section 5B, pp. 1-6.
Blitchington Frank H.
Chandross Edwin A.
Shepherd Lloyd
AT&T Bell Laboratories
Johnston Jill
Schneider Bruce B.
Warden Robert J.
LandOfFree
Inspection of multipattern circuit boards does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Inspection of multipattern circuit boards, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inspection of multipattern circuit boards will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-766473