Patent US2518109A successfully refreshed from Google Patents.
US2518109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pickling of metals
Assignee: Monsanto Chemicals Ltd
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Filing: 1947-07-02
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Granted: 1950-08-08
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Expires: 1967-07-02
Abstract
No abstract record available.
Inventors
- 👤 Richard O Zerbe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:14
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/04; C23G1/06; C23G1/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
PROCESS OF PICKLING A FERROUS METAL WHICH COMPRISES SUBJECTING THE METAL TO BE PICKLED TO THE ACTION OF A HEATED NONOXIDIZING MINERAL ACID SOLUTION CONTAINING ABOUT 0.2 TO 0.5 PERCENT BY WEIGHT BASED UPON 100 PERCENT ACID OF A COMPOUND OF THE STRUCTURE
Claim 2
Dependent Claim
43 words
PROCESS OF PICKLING A FERROUS METAL WHICH COMPRISES SUBJECTING THE METAL TO BE PICKLED TO THE ACTION OF A HEATED NONOXIDIZING MINERAL ACID SOLUTION CONTAINING ABOUT 0.2 TO 0.5 PERCENT BY WEIGHT BASED UPON 100 PERCENT ACID OF A COMPOUND OF THE STRUCTURE
References Cited (Backward Citations)
US1990963A
Cited
US2383681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-07 | 1954-02-06 | 1954-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-07 | 1958-02-06 | 1958-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-07 | 1962-02-06 | 1962-08-08 | $7700.00 | Window Closed / Lapsed |