Patent US3728144A successfully refreshed from Google Patents.
US3728144A
Expired / Lapsed
US
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Method for coating metal substrates with molten metal
Assignee: Bekaert NV SA
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Filing: 1971-04-16
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Granted: 1973-04-17
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Expires: 1991-04-16
Abstract
Abstract A METHOD AND APPARATUS FOR CONTINUOUS COATING OF A METAL SUBSTRATE WITH A MOLTEN METAL IN WHICH A METAL SUBSTRATE IS SUCCESSIVELY ANNEALED AT AN ELEVATED TEMPERATURE IN A HEATING ZONE, COOLED IN A COOLING ZONE AND COATED WITH A MOLTEN METAL IN AN IMMERSION ZONE, WHEREIN THE HEATING ZONE, THE COOLING ZONE AND THE IMMERSION ZONE ARE MAINTAINED UNDER A VACUUM.
Inventors
- 👤 Poucke L Van
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:23
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/003; C23C2/0034; C23C2/00342; C23C2/00344; C23C2/0035; C23C2/0038; C23C2/02; C23C2/022; C23C2/0224; C23C2/024
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |