Patent US3443931A successfully refreshed from Google Patents.
US3443931A
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US
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Process for making metallized pellets from iron oxide containing material
Assignee: Midland Ross Corp
•
Filing: 1965-09-10
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Granted: 1969-05-13
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Expires: 1985-09-10
Abstract
No abstract record available.
Inventors
- 👤 Donald Beggs
- 👤 William A Ahrendt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:15
CPC Classifications
C; C21; C21B; C21B13/00; C21B13/10; C21B13/105; C21B13/0046; C21B13/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3083090A
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US3218152A
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US3317308A
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US3264092A
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US3264091A
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US3333951A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |