Patent US2981610A successfully refreshed from Google Patents.
US2981610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical milling process and composition
Assignee: Boeing Co
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Filing: 1957-05-14
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Granted: 1961-04-25
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Expires: 1977-05-14
Abstract
No abstract record available.
Inventors
- 👤 Snyder Herman Ben
- 👤 Ludwig M Rosenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:58
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/10; C23F1/14; C23F1/16; C23F1/20; C23F1/26
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
79 words
A COMPOSITION OF MATTER ADAPTED FOR CHEMICALLY MILLING METALS WHICH CONSISTS ESSENTIALLY OF AN AQUEOUS ACIDIC MEDIUM CONTAINING A NITRATE IN THE CONCENTRATION RANGE OF ABOUT 0.1-4.7 MOLAR, A CHLORIDE IN THE CONCENTRATION RANGE OF ABOUT 0.1-2.2 MOLAR, A FLUORIDE IN THE CONCENTRATION RANGE OF ABOUT 0.25-5.3 MOLAR, AND AN ACETATE IN A CONCENTRATION OF AT LEAST 0.22 NORMAL, THE AQUEOUS MEDIUM AS A WHOLE HAVING AN AVAILABLE HYDROGEN ION CONCENTRATION IN THE CONCENTRATION RANGE OF ABOUT 2.8-10.7 MOLAR.
Claim 2
Dependent Claim
79 words
A COMPOSITION OF MATTER ADAPTED FOR CHEMICALLY MILLING METALS WHICH CONSISTS ESSENTIALLY OF AN AQUEOUS ACIDIC MEDIUM CONTAINING A NITRATE IN THE CONCENTRATION RANGE OF ABOUT 0.1-4.7 MOLAR, A CHLORIDE IN THE CONCENTRATION RANGE OF ABOUT 0.1-2.2 MOLAR, A FLUORIDE IN THE CONCENTRATION RANGE OF ABOUT 0.25-5.3 MOLAR, AND AN ACETATE IN A CONCENTRATION OF AT LEAST 0.22 NORMAL, THE AQUEOUS MEDIUM AS A WHOLE HAVING AN AVAILABLE HYDROGEN ION CONCENTRATION IN THE CONCENTRATION RANGE OF ABOUT 2.8-10.7 MOLAR.
Claim 3
Dependent Claim
104 words
A PROCESS FOR CHEMICALLY MILLING A METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, TITANTIUM, STEEL AND ALLOYS OF THESE METALS, SAID PROCESS COMPRISING SUBJECTING THESE METALS TO THE ACTION OF A COMPOSITION OF MATTER WHICH CONSISTS ESSENTIALLY OF AN AQUEOUS ACIDIC MEDIUM CONTAINING A NITRATE IN THE CONCENTRATION RANGE OF ABOUT 0.1-4.7 MOLAR, A CHLORIDE IN THE CONCENTRATION OF ABOUT 0.1-2.2 MOLAR, A FLUORIDE IN THE CONCENTRATION RANGE OF ABOUT 0.25-5.3 MOLAR, AND AN ACETATE IN A CONCENTRATION OF AT LEAST 0.22 NORMAL, THE AQUEOUS MEDIUM AS A WHOLE HAVING AN AVAILABLE HYDROGEN ION CONCENTRATION IN THE CONCENTRATION RANGE OF ABOUT 2.8-10.7 MOLAR.
Claim 4
Dependent Claim
104 words
A PROCESS FOR CHEMICALLY MILLING A METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, TITANTIUM, STEEL AND ALLOYS OF THESE METALS, SAID PROCESS COMPRISING SUBJECTING THESE METALS TO THE ACTION OF A COMPOSITION OF MATTER WHICH CONSISTS ESSENTIALLY OF AN AQUEOUS ACIDIC MEDIUM CONTAINING A NITRATE IN THE CONCENTRATION RANGE OF ABOUT 0.1-4.7 MOLAR, A CHLORIDE IN THE CONCENTRATION OF ABOUT 0.1-2.2 MOLAR, A FLUORIDE IN THE CONCENTRATION RANGE OF ABOUT 0.25-5.3 MOLAR, AND AN ACETATE IN A CONCENTRATION OF AT LEAST 0.22 NORMAL, THE AQUEOUS MEDIUM AS A WHOLE HAVING AN AVAILABLE HYDROGEN ION CONCENTRATION IN THE CONCENTRATION RANGE OF ABOUT 2.8-10.7 MOLAR.
References Cited (Backward Citations)
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US2446060A
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US2662814A
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US2828192A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |