Patent US3051587A successfully refreshed from Google Patents.
US3051587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating metallic strip with sodium vapor
Assignee: Armco Inc
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Filing: 1960-08-19
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Granted: 1962-08-28
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Expires: 1980-08-19
Abstract
No abstract record available.
Inventors
- 👤 Kenneth G Coburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:31
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/04; C23C2/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
IN A PROCESS OF COATING A FERROUS METAL ARTICLE WITH MOLTEN COATING METAL OF A CLASS CONSISTING OF ALUMINUM AND ALUMINUM ALLOYS, IN WHICH THE METAL ARTICLE IS PASSED THROUGH A HOOD INTO A BATH OF SAID MOLTEN COATING METAL, AND IN WHICH A PROTECTIVE ATMOSPHERE WHICH IS SUBSTANTIALLY NON-OXIDIZING TO FERROUS IS MAINTAINED IN SAID HOOD; THE STEPS OF GENERATING SODIUM VAPOR OUTSIDE SAID HOOD, CONVEYING SAID SODIUM VAPOR, BY MEANS OF A CARRIER STREAM OF NITROGEN GAS, INTO SAID HOOD ADJACENT THE
Claim 2
Dependent Claim
84 words
IN A PROCESS OF COATING A FERROUS METAL ARTICLE WITH MOLTEN COATING METAL OF A CLASS CONSISTING OF ALUMINUM AND ALUMINUM ALLOYS, IN WHICH THE METAL ARTICLE IS PASSED THROUGH A HOOD INTO A BATH OF SAID MOLTEN COATING METAL, AND IN WHICH A PROTECTIVE ATMOSPHERE WHICH IS SUBSTANTIALLY NON-OXIDIZING TO FERROUS IS MAINTAINED IN SAID HOOD; THE STEPS OF GENERATING SODIUM VAPOR OUTSIDE SAID HOOD, CONVEYING SAID SODIUM VAPOR, BY MEANS OF A CARRIER STREAM OF NITROGEN GAS, INTO SAID HOOD ADJACENT THE
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) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |