US3148081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Galvanized flat rolled product and its manufacture
Assignee: National Steel Corp
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Filing: 1962-01-02
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Granted: 1964-09-08
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Expires: 1982-01-02
Abstract
No abstract record available.
Inventors
- 👤 George P Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:36
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
CONTINUOUS-STRIP PROCESS FOR IMPROVING CONVENTIONAL GALVANIZE COATED STEEL STRIP TO PRODUCE A SMOOTH-FINISH, SPANGLE-FREE APPEARANCE AS DELIVERED FROM A SINGLE CONTINUOUS-STRIP COATING AND TREATMENT LINE COMPRISING THE STEPS OF PASSING STEEL STRIP THROUGH A MOLTEN HOT-DI GALVANINIZING BATH, CONTROLLING COATING WEIGHT OF MOLTEN GALVANIZE COATING ON THE STEEL STRIP UPON EXIT OF THE STEEL STRIP FROM THE GALVANIZING BATH, THEN MINIMIZING SPANGLE FORMATION IN THE GALVANIZE COATING WITHOUT CHANGING THE CHEMICAL COMPOSITION OF THE COATING BY SUDDENLY FREEZING THE MOLTEN GALVANIZE COATING, COOLING THE MINIMIZED-SPANGLE GALVANIZED STEEL STRIP, AND THEN PLANISHING THE MINIMIZED-SPANGLE GALVANIZED SURFACE BY CONTACTING THE MINIMIZED-SPANGLEL GALVANIZED STEEL STRIP WITH DRIVEN PLANISHING ROLL MEANS TO SMOOTH SURFACE IMPERFECTIONS AND PRODUCE A PERMANENT SMOOTH-FINISH, SPANGLE-FREE APPEARANCE.
Claim 2
Dependent Claim
118 words
CONTINUOUS-STRIP PROCESS FOR IMPROVING CONVENTIONAL GALVANIZE COATED STEEL STRIP TO PRODUCE A SMOOTH-FINISH, SPANGLE-FREE APPEARANCE AS DELIVERED FROM A SINGLE CONTINUOUS-STRIP COATING AND TREATMENT LINE COMPRISING THE STEPS OF PASSING STEEL STRIP THROUGH A MOLTEN HOT-DI GALVANINIZING BATH, CONTROLLING COATING WEIGHT OF MOLTEN GALVANIZE COATING ON THE STEEL STRIP UPON EXIT OF THE STEEL STRIP FROM THE GALVANIZING BATH, THEN MINIMIZING SPANGLE FORMATION IN THE GALVANIZE COATING WITHOUT CHANGING THE CHEMICAL COMPOSITION OF THE COATING BY SUDDENLY FREEZING THE MOLTEN GALVANIZE COATING, COOLING THE MINIMIZED-SPANGLE GALVANIZED STEEL STRIP, AND THEN PLANISHING THE MINIMIZED-SPANGLE GALVANIZED SURFACE BY CONTACTING THE MINIMIZED-SPANGLEL GALVANIZED STEEL STRIP WITH DRIVEN PLANISHING ROLL MEANS TO SMOOTH SURFACE IMPERFECTIONS AND PRODUCE A PERMANENT SMOOTH-FINISH, SPANGLE-FREE APPEARANCE.
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 |