US2913360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of descaling nickel alloys
Assignee: Allegheny Ludlum Steel Corp
•
Filing: 1958-03-20
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Granted: 1959-11-17
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Expires: 1978-03-20
Abstract
No abstract record available.
Inventors
- 👤 Donald R Zaremski
- 👤 Jack M Beigay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:59
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
THE METHOD OF TREATING A SCALED METAL ARTICLE FORMED FROM A NICKEL BASE ALLOY WHICH COMPRISES, CONTACTING THE SURFACE OF SAID ARTICLE WITH AN AQUEOUS BATH THAT CONTAINS FROM ABOUT 5% TO ABOUT 30%, BY WEIGHT, ACETIC ACID, ABOUT 5% TO 17%, BY WEIGHT, HYDROFLUORIC ACID AND ABOUT 0.1% TO 2% TITANIUM.
Claim 2
Independent Claim
52 words
THE METHOD OF TREATING A SCALED METAL ARTICLE FORMED FROM A NICKEL BASE ALLOY WHICH COMPRISES, CONTACTING THE SURFACE OF SAID ARTICLE WITH AN AQUEOUS BATH THAT CONTAINS FROM ABOUT 5% TO ABOUT 30%, BY WEIGHT, ACETIC ACID, ABOUT 5% TO 17%, BY WEIGHT, HYDROFLUORIC ACID AND ABOUT 0.1% TO 2% TITANIUM.
References Cited (Backward Citations)
US1657228A
Cited
US2287111A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |