Patent US2929740A successfully refreshed from Google Patents.
US2929740A
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Method and bath for coating metal with molten zinc
Assignee: Wean Engineering Co Inc
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Filing: 1957-09-25
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Granted: 1960-03-22
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Expires: 1977-09-25
Abstract
No abstract record available.
Inventors
- 👤 John E Logan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:25
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/04; C23C2/06; C23C10/00; C23C10/18; C23C10/20; C23C10/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
THE METHOD OF COATING A METAL WITH ZINC WHICH COMPRISES HEATING A MIXTURE OF ZINC AND SODIUM CONTAINING NOT LESS THAN 10% NOR MORE THAN 15% ZINC WITH THE BALANCE BEING SUBSTANTIALLY PURE SODIUM TO A TEMPERATURE BETWEEN 1000*F. AND 1300*F., PROTECTING THE BATH FROM THE ATMOSPHERE, AND IMMERISING THE METAL THEREIN UNTIL IT IS COATED WITH ZINC.
Claim 2
Independent Claim
58 words
THE METHOD OF COATING A METAL WITH ZINC WHICH COMPRISES HEATING A MIXTURE OF ZINC AND SODIUM CONTAINING NOT LESS THAN 10% NOR MORE THAN 15% ZINC WITH THE BALANCE BEING SUBSTANTIALLY PURE SODIUM TO A TEMPERATURE BETWEEN 1000*F. AND 1300*F., PROTECTING THE BATH FROM THE ATMOSPHERE, AND IMMERISING THE METAL THEREIN UNTIL IT IS COATED WITH ZINC.
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) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |