Patent US3389006A successfully refreshed from Google Patents.
US3389006A
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Process for forming a refractory coating on silicon-iron stock
Assignee: Armco Inc
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Filing: 1964-05-18
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Granted: 1968-06-18
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Expires: 1984-05-18
Abstract
No abstract record available.
Inventors
- 👤 Dale M Kohler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:08
CPC Classifications
C; C21; C21D; C21D8/00; C21D8/12; C21D8/1277; C21D8/1283; C09; C09D; C09D5/00; C09D5/22; C21D1/00; C21D1/68; C21D1/70; C23; C23C; C23C24/00; C23C26/00; H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/147; H01F1/14766; H01F1/14775; H01F1/14783; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2641556A
Cited
US1922254A
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US3000752A
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US3090711A
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US3169236A
Cited
US3282747A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-18 | 1971-12-18 | 1972-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-18 | 1975-12-18 | 1976-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-18 | 1979-12-18 | 1980-06-18 | $7700.00 | Window Closed / Lapsed |