US3762883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated steel article
Assignee: Republic Steel Corp
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Filing: 1970-11-03
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Granted: 1973-10-02
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Expires: 1990-11-03
Abstract
Abstract A steel substrate having an intermediate adherent coating of gold or silver or copper or brass, and an outer adherent coating of zinc, in which the iron content in the coatings, occasioned by alloying between the iron and the coatings thereon, is less than about 100 milligrams per square foot of surface.
Inventors
- 👤 G Shepard
- 👤 C Brooker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:46
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/06; C23C14/14; C23C14/16; C23C28/00; C23C28/02; C23C28/023; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12785; Y10T428/12792; Y10T428/12861; Y10T428/12882; Y10T428/12903; Y10T428/12917; Y10T428/12924
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) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |