US3053648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reduction of iron ore
Assignee: Battelle Memorial Institute Inc
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Filing: 1959-10-08
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Granted: 1962-09-11
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Expires: 1979-10-08
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank M Stephens
- 👤 Lynn W Coffer
- 👤 Langston Benny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:28
CPC Classifications
C; C21; C21B; C21B13/00; C21B13/0033; Y; Y02; Y02P; Y02P10/00; Y02P10/10; Y02P10/134; Y10; Y10S; Y10S423/00; Y10S423/09; Y10S423/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A PROCESS FOR THE REDUCTION OF IRON ORE AND AGGLOMERATION OF IRON PELLETS IN A FLUIDIZED BED, COMPRISING THE STEPS OF: CHARGING A REACTOR WITH METALLIC IRON PELLETS OF VARYING SIZE IN PROOPORTION THAT THE TOTAL SURFACE AREAS OF EACH OF THE VARIOUS SIZES ARE SUBSTANTIALLY EQUAL TO PROVIDE AGGLOMERATION WITHOUT DEFLUIDIZATION OF SAID BED; FLUIDIZING THE CHARGED PELLETS IN SAID REACTOR BY PASS-
Claim 2
Dependent Claim
64 words
A PROCESS FOR THE REDUCTION OF IRON ORE AND AGGLOMERATION OF IRON PELLETS IN A FLUIDIZED BED, COMPRISING THE STEPS OF: CHARGING A REACTOR WITH METALLIC IRON PELLETS OF VARYING SIZE IN PROOPORTION THAT THE TOTAL SURFACE AREAS OF EACH OF THE VARIOUS SIZES ARE SUBSTANTIALLY EQUAL TO PROVIDE AGGLOMERATION WITHOUT DEFLUIDIZATION OF SAID BED; FLUIDIZING THE CHARGED PELLETS IN SAID REACTOR BY PASS-
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) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |