Chemical composition for removing nickel-platinum alloy residues from a substrate, and method for removing such residues
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United States of America Patent
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Jul 9, 2024
Grant Date -
Oct 13, 2022
app pub date -
Sep 28, 2020
filing date -
Sep 27, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention relates to an aqueous chemical composition C for removing from a substrate selectively under heat residues of a nickel-platinum alloy containing at least 8% by weight of Pt compared to the total weight of nickel-platinum alloy,
- characterised in that it is prepared by mixing a composition B comprising bromide ions and a composition H comprising hydrogen peroxide such that in the composition C, at the moment of mixing, the molar concentration of bromide ions is comprised between 0.15 mol/L and 0.45 mol/L and the molar ratio of hydrogen peroxide with respect to bromide ions is comprised between 1.1 and 2.
First Claim
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International Classification(s)
- 2020 Application Filing Year
- C23F Class
- 232 Applications Filed
- 131 Patents Issued To-Date
- 56.47 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C23F Class
- 0 % this patent is cited more than
- 1 Age
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