US3717501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming minimized spangle coated strip
Assignee: Bethlehem Steel Corp
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Filing: 1971-06-24
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Granted: 1973-02-20
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Expires: 1991-06-24
Abstract
Abstract MOLTEN ZINC COATED MATERIAL IS WRAP CONTACTED WITH UNEQUAL SIZED INTERNALLY COOLED CHROMIUM PLATED ROLLS PRIOR TO SOLIDIFICATION TO INHIBIT THE FORMATION OF UNDERSIRABLE SPANGLING OF THE ZINC COATED SURFACE. D R A W I N G
Inventors
- 👤 L Caldwell
- 👤 R Helman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:30
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/14; C23C2/22; C23C2/26
Claims Analysis
Total Claims: 0
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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) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |