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