Title:
PROCESS FOR ETCHING PRINTED CIRCUITS
United States Patent 3463733
US Patent References:
Preservation of chlorinated hydrocarbons
- - 2043257
Engraving process
- - 2177751
Method and composition for chemically polishing metals
- - 2662814
Process and composition for the dissolution of copper
- - 2978301
Hydrogen peroxide etching of copper in manufacture of printed circuits
- - 3269881
Preservation of chlorinated hydrocarbons
- - 2043257
Engraving process
- - 2177751
Method and composition for chemically polishing metals
- - 2662814
Process and composition for the dissolution of copper
- - 2978301
Hydrogen peroxide etching of copper in manufacture of printed circuits
- - 3269881
Inventors:
Achenbach, Karl
Publication Date:
08/26/1969
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Assignee:
FMC CORP
Primary Class:
Other Classes:
216/13, 134/41, 216/106
International Classes:
C23F1/18; C23F1/10; C23F1/00; H05K3/06; C23F1/04
US Patent References: