Patent US1579473A successfully refreshed from Google Patents.
Patent US3514279A successfully refreshed from Google Patents.
US3514279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preheating scrap with controlled oxidation
Assignee: Armco Inc
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Filing: 1968-02-09
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Granted: 1970-05-26
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Expires: 1988-02-09
Abstract
No abstract record available.
Inventors
- 👤 Ronald F Jensen
- 👤 Paul E Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:02
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/56; C21C5/562; C21C5/565; C22; C22B; C22B1/00; C22B1/14; C22B1/24; C22B1/248; Y; Y02; Y02P; Y02P10/00; Y02P10/20; Y10; Y10S; Y10S266/00; Y10S266/901
Claims Analysis
Total Claims: 0
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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) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |