Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1987-10-02
1988-06-28
Beck, Shrive P.
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
427304, 427305, 427306, 4274431, 430417, B05D 512
Patent
active
047538210
ABSTRACT:
A process suitable for the fully additive technique for the electroless partial metallization of substrate surfaces consists in treating the surface with photosensitive silver(I) compounds (e.g. carboxylic acid salts), partially exposing the silver(I) compounds left behind on the surfaces, if necessary intensifying the exposure effect and/or exchanging the silver produced during the exposure for nobler metals, and detaching the unexposed silver(I) compounds.
REFERENCES:
patent: 3994727 (1976-11-01), Polichette
patent: 4059445 (1977-11-01), Sato
patent: 4178180 (1979-12-01), Vinal
patent: 4262085 (1981-04-01), Ehrich
patent: 4511597 (1985-04-01), Teng
patent: 4560643 (1985-12-01), Finter
patent: 4568570 (1986-02-01), Giesecke
Giesecke Henning
Matejek Reinhart
VON Gizycki Ulrich
Wolf Gerhard D.
Bayer Aktiengesellschaft
Beck Shrive P.
Dang Vi Duong
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