US2547193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pickling of metals
Assignee: Monsanto Chemicals Ltd
•
Filing: 1949-04-13
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Granted: 1951-04-03
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Expires: 1969-04-13
Abstract
No abstract record available.
Inventors
- 👤 Richard O Zerbe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:57
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/04; C23G1/06; C23G1/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A PROCESS OF PICKLING A FERROUS METAL WHICH COMPRISES SUBJECTING THE METAL TO BE PICKLED TO THE ACTION OF A NON-OXIDIZING MINERAL ACID SOLUTION CONTAINING A SMALL PROPORTION SUFFICIENT TO INHIBIT THE ACTION OF THE ACID ON FERROUS METALS OF A COMPOUND OF THE STRUCTURE
Claim 2
Dependent Claim
45 words
A PROCESS OF PICKLING A FERROUS METAL WHICH COMPRISES SUBJECTING THE METAL TO BE PICKLED TO THE ACTION OF A NON-OXIDIZING MINERAL ACID SOLUTION CONTAINING A SMALL PROPORTION SUFFICIENT TO INHIBIT THE ACTION OF THE ACID ON FERROUS METALS OF A COMPOUND OF THE STRUCTURE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |