Soldering flux vehicle additive and fine pitch printing method

Metal treatment – Compositions – Fluxing

Reexamination Certificate

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Details

C148S024000

Reexamination Certificate

active

06936115

ABSTRACT:
A lubricant additive which is a branched chain fatty alcohol or fatty acid containing a total of from 8 to 50 carbon atoms with a minimum of 4 carbon atoms being present in the shorter alkyl chain, or an ester thereof. The lubricant additive is especially adapted for inclusion in a non-aqueous flux vehicle that is mixed with a solder alloy powder to make a solder paste used in the manufacture of printed circuit boards.

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Irene W. H. Lee, Screenable Solder Paste, 231 Welding Journal, pp. 32-36, Oct. 1977.
Notification of Transmittal of the International Search Report or the Declaration, dated Aug. 8, 2002.
Notification of Transmittal of the International Search Report or the Declaration, dated Sep. 3, 2002.

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