US3148080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal coating process and apparatus
Assignee: National Steel Corp
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Filing: 1960-05-02
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Granted: 1964-09-08
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Expires: 1980-05-02
Abstract
No abstract record available.
Inventors
- 👤 John T Mayhew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:27
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
PROCESS FOR PRODUCING MINIMIZED-SPANGLE GALVANIZED STRIP COMPRISING THE STEPS OF MOVING A CONTINUOUS STEEL STRIP THROUGH A MOLTEN GALVANIZING BATH IN WHICH STRIP TEMPERATURE APPROACHES GALVANIZING BATH TEMPERATURE, DELIVERING GALVANIZED STRIP FROM THE MOLTEN GALVANIZING BATH AT ABOUT BATH TEMPERATURE, CONTROLLING THE MOISTURE CONTENT OF A STEAM SUPPLY TO PROVIDE WET STEAM, MOVING THE GALVANIZED STRIP BEYOND THE GALVANIZING BATH TO PERMIT A GRADUAL COOLING OF THE STRIP BELOW GALVANIZING BATH TEMPERATURE AND NEAR THE CRYSTALLIZATION TEMPERATURE OF THE GALVANIZE COATING, AND THEN IMPINGING WET STEAM ON THE STRIP BEFORE A CRYSTALLIZATION PATTERN HAS
Claim 2
Dependent Claim
94 words
PROCESS FOR PRODUCING MINIMIZED-SPANGLE GALVANIZED STRIP COMPRISING THE STEPS OF MOVING A CONTINUOUS STEEL STRIP THROUGH A MOLTEN GALVANIZING BATH IN WHICH STRIP TEMPERATURE APPROACHES GALVANIZING BATH TEMPERATURE, DELIVERING GALVANIZED STRIP FROM THE MOLTEN GALVANIZING BATH AT ABOUT BATH TEMPERATURE, CONTROLLING THE MOISTURE CONTENT OF A STEAM SUPPLY TO PROVIDE WET STEAM, MOVING THE GALVANIZED STRIP BEYOND THE GALVANIZING BATH TO PERMIT A GRADUAL COOLING OF THE STRIP BELOW GALVANIZING BATH TEMPERATURE AND NEAR THE CRYSTALLIZATION TEMPERATURE OF THE GALVANIZE COATING, AND THEN IMPINGING WET STEAM ON THE STRIP BEFORE A CRYSTALLIZATION PATTERN HAS
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) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |