Bath preparation
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United States of America Patent
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May 29, 1990
Issued Date -
N/A
app pub date -
May 10, 1989
filing date -
Jul 3, 1986
priority date (Note) -
Expired
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Abstract
The bath preparation of the present invention comprises an ascorbic acid compound and at least one reducing agent selected from the group consisting of water-soluble thiosulfate, water-soluble dithionite, L-cysteine hydrochloride, glutathione and gallic acid ester.
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