Title:
Cleaning and pickling of metals
United States Patent 2425320
Inventors:
Hill, William H.
Publication Date:
08/12/1947
Export Citation:
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Assignee:
KOPPERS CO INC
Primary Class:
510/263
Other Classes:
510/492, 528/254, 528/255, 528/265, 528/266, 528/268, 528/269, 544/159, 544/162, 558/14
International Classes:
C23G1/06; C23G1/02
View Patent Images:
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US Patent References:
2335452Inhibitor for acid pickling baths and process of making
2203649Acid solution
2072003Condensation product of cinchona bark alkaloid
2050204Pickling inhibitor
1780636Substituted guanidine-aldehyde condensation product
Foreign References:
GB347228A