Patent US2585616A successfully refreshed from Google Patents.
US2585616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of pickling metals
Assignee: Sparex Chemical Co
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Filing: 1946-08-09
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Granted: 1952-02-12
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Expires: 1966-08-09
Abstract
No abstract record available.
Inventors
- 👤 Marion D Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:39
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/08; C23G1/088
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
THE METHOD OF PICKLING IRON WHICH COMPRISES CONTACTING THE IRON AND SCALE THEREON WITH AN AQUEOUS SOLUTION OF ACIDIC MATERIAL CONSISTING ESSENTIALLY OF SODIUM BISULFATE AND OXALIC ACID IN CONTACT OF SODIUM BISULFATE AND OXALIC ACID IN AMOUNT SOLUBLE IN THE SOLUTION AND MAINTAINING THE CONTACT OF THE SCALE WITH CRYSTALS OF THE LATTER IN EXCESS OF THE AMOUNT SOLUBLE IN THE SOLUTION UNTIL THE SCALE IS DISSOLVED.
Claim 2
Independent Claim
68 words
THE METHOD OF PICKLING IRON WHICH COMPRISES CONTACTING THE IRON AND SCALE THEREON WITH AN AQUEOUS SOLUTION OF ACIDIC MATERIAL CONSISTING ESSENTIALLY OF SODIUM BISULFATE AND OXALIC ACID IN CONTACT OF SODIUM BISULFATE AND OXALIC ACID IN AMOUNT SOLUBLE IN THE SOLUTION AND MAINTAINING THE CONTACT OF THE SCALE WITH CRYSTALS OF THE LATTER IN EXCESS OF THE AMOUNT SOLUBLE IN THE SOLUTION UNTIL THE SCALE IS DISSOLVED.
References Cited (Backward Citations)
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US370551A
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US2422066A
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US2049517A
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US2423385A
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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) | 1955-02-11 | 1955-08-13 | 1956-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-11 | 1959-08-13 | 1960-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-11 | 1963-08-13 | 1964-02-12 | $7700.00 | Window Closed / Lapsed |