Patent US2661328A successfully refreshed from Google Patents.
US2661328A
Expired / Lapsed
US
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Method of flow-brightening tinplate
Assignee: National Steel Corp
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Filing: 1948-08-19
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Granted: 1953-12-01
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Expires: 1968-08-19
Abstract
No abstract record available.
Inventors
- 👤 Edwin J Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:14
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/48; C25D5/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
IN THE PROCESS OF TREATING ELECTROLYTIC TINPLATE STRIP IN WHICH THE TINPLATE IS PASSED THROUGH A FLOW-BRIGHTENING ZONE AND THE TIN COATING MELTED, THE STEPS COMPRISING, PASSING THE STRIP FROM THE FLOW-BRIGHTENING ZONE AND PRECOOLING THE MOLTEN TIN COATING IN A GASEOUS ATMOSPHERE WITHOUT EFFECTING SOLIDIFICATION OF THE TIN COATING, AND THEN PASSING THE PRECOOLED STRIP THROUGH A BATH OF QUENCH WATER HAVING A TEMPERATURE NOT ABOVE 135* F. AND SOLIDIFYING THE TIN COATING IN THE QUENCH BATH.
Claim 2
Dependent Claim
78 words
IN THE PROCESS OF TREATING ELECTROLYTIC TINPLATE STRIP IN WHICH THE TINPLATE IS PASSED THROUGH A FLOW-BRIGHTENING ZONE AND THE TIN COATING MELTED, THE STEPS COMPRISING, PASSING THE STRIP FROM THE FLOW-BRIGHTENING ZONE AND PRECOOLING THE MOLTEN TIN COATING IN A GASEOUS ATMOSPHERE WITHOUT EFFECTING SOLIDIFICATION OF THE TIN COATING, AND THEN PASSING THE PRECOOLED STRIP THROUGH A BATH OF QUENCH WATER HAVING A TEMPERATURE NOT ABOVE 135* F. AND SOLIDIFYING THE TIN COATING IN THE QUENCH BATH.
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) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |