Patent US2673836A successfully refreshed from Google Patents.
US2673836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous electrolytic pickling and tin plating of steel strip
Assignee: United States Steel Corp
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Filing: 1950-11-22
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Granted: 1954-03-30
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Expires: 1970-11-22
Abstract
No abstract record available.
Inventors
- 👤 Edwin E Vonada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:16
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/34; C25D5/36; C25D7/00; C25D7/06; C25D7/0614
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
THE METHOD OF CONTINUOUSLY AND SIMULTANEOUSLY PICKLING AND APPLYING A FLASH COATING OF TIN TO A STEEL STRIP HAVING A THIN COATING OF OXIDE THEREON WHICH COMPRISES PASSING THE STRIP THROUGH A 5% TO 15% SULPHURIC ACID SOLUTION HAVING A PLURALITY OF ANODES THEREIN, PART OF SAID ANODES BEING MADE OF TIN AND THE REMAINDER BEING MADE OF FERROUS METAL CONTAINING BETWEEN 13% AND 18% SILICON, SAID SILICON CONTAINING ANODES BEING ARRANGED IN SPACED APART RELATIONSHIP ACROSS THE WIDTH OF THE STRIP WITH ONE ADJACENT EACH EDGE OF THE STRIP AND TIN ANODES BE-
Claim 2
Independent Claim
94 words
THE METHOD OF CONTINUOUSLY AND SIMULTANEOUSLY PICKLING AND APPLYING A FLASH COATING OF TIN TO A STEEL STRIP HAVING A THIN COATING OF OXIDE THEREON WHICH COMPRISES PASSING THE STRIP THROUGH A 5% TO 15% SULPHURIC ACID SOLUTION HAVING A PLURALITY OF ANODES THEREIN, PART OF SAID ANODES BEING MADE OF TIN AND THE REMAINDER BEING MADE OF FERROUS METAL CONTAINING BETWEEN 13% AND 18% SILICON, SAID SILICON CONTAINING ANODES BEING ARRANGED IN SPACED APART RELATIONSHIP ACROSS THE WIDTH OF THE STRIP WITH ONE ADJACENT EACH EDGE OF THE STRIP AND TIN ANODES BE-
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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) | 1957-03-29 | 1957-09-28 | 1958-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-29 | 1961-09-28 | 1962-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-29 | 1965-09-28 | 1966-03-30 | $7700.00 | Window Closed / Lapsed |