Patent US3333951A successfully refreshed from Google Patents.
US3333951A
Expired / Lapsed
US
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Metallized pellets
Assignee: McDowell-Wellman Engineering Co
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Filing: 1965-06-14
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Granted: 1967-08-01
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Expires: 1985-06-14
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Ban
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:25
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/14; C22B1/24; C22B1/2406; C21; C21B; C21B13/00; C21B13/0046; C21B13/0053
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A PROCESS FOR PRODUCING METALLIZED LAYERED IRON ORE PELLETS HAVING A PREDETERMINED LARGE DIAMETER AND IN WHICH FROM ABOUT 60% TO ABOUT 95% OF THE AVAILABLE IRON IN SAID ORE IS REDUCED TO THE METAL, COMPRISING THE STEPS OF: (A) FORMING A BLEND OF IRON ORE INCLUDING A SOLID CARBONACEOUS MATERIAL IN AN AMOUNT AT LEAST SUFFICIENT TO REDUCE THE IRON CONTENT TO FREE METAL; (B) MOISTENING SAID BLEND; (C) FORMING MOIST PELLETS OF SAID MOISTENED AND BLENDED IRON ORE HAVING A PREDETERMINED AVERAGE SMALL DIAMETER; (D) INDURATING SAID MOIST PELLETS TO FORM DISCRETE METALLIZED PELLETS IN WHICH FROM ABOUT 60% TO ABOUT 95% OF THE AVAILABLE IRON IN SAID PELLETS IS REDUCED TO THE METAL;
Claim 2
Dependent Claim
116 words
A PROCESS FOR PRODUCING METALLIZED LAYERED IRON ORE PELLETS HAVING A PREDETERMINED LARGE DIAMETER AND IN WHICH FROM ABOUT 60% TO ABOUT 95% OF THE AVAILABLE IRON IN SAID ORE IS REDUCED TO THE METAL, COMPRISING THE STEPS OF: (A) FORMING A BLEND OF IRON ORE INCLUDING A SOLID CARBONACEOUS MATERIAL IN AN AMOUNT AT LEAST SUFFICIENT TO REDUCE THE IRON CONTENT TO FREE METAL; (B) MOISTENING SAID BLEND; (C) FORMING MOIST PELLETS OF SAID MOISTENED AND BLENDED IRON ORE HAVING A PREDETERMINED AVERAGE SMALL DIAMETER; (D) INDURATING SAID MOIST PELLETS TO FORM DISCRETE METALLIZED PELLETS IN WHICH FROM ABOUT 60% TO ABOUT 95% OF THE AVAILABLE IRON IN SAID PELLETS IS REDUCED TO THE METAL;
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) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |