Patent US2711952A successfully refreshed from Google Patents.
US2711952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of iron briquettes by reduction of iron oxide
Assignee: Illinois Clay Products Co
•
Filing: 1951-07-30
•
Granted: 1955-06-28
•
Expires: 1971-07-30
Abstract
No abstract record available.
Inventors
- 👤 Howard F West
- 👤 John H Veale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:02
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/14; C22B1/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
THE METHOD OF REDUCING IRON ORE WHICH COMPRISES MOLDING A MIXTURE OF IRON ORE IN FINELY SUBDIVIDED CONDITION, 15% COKE IN FINELY SUBDIVIDED CONDITION AND A SMALL AMOUNT OF SULPHURIC ACID INTO THE FORM OF A BRICK OF THE LIKE, DEVELOPING AN IRON SULPHATE BOND BY REACTION OF THE ACID WITH THE ORE, PLACING THE BRICK IN SPACED RELATION IN A HEATING CHAMBER WITH EXTERIORS DIRECTLY EXPOSED TO A REDUCING ATMOSPHERE IN THE CHAMBER, AND HEATING THE BRICK IN SAID CHAMBER IN A REDUCING ATMOSPHERE TO ABOUT 2000 DEGEES F. TO REDUCE IRON ORE TO ABOUT 75% METALLIS IRON AND PARTLY TO FUSE THE BRICK, SAID HEATING BEING CONTINUED SO AS PROGRESSIVELY PARTLY TO FUSE THE BRICK FROM BY TO INCREASE ITS THERMAL CONDUCTIVITY.
Claim 2
Independent Claim
124 words
THE METHOD OF REDUCING IRON ORE WHICH COMPRISES MOLDING A MIXTURE OF IRON ORE IN FINELY SUBDIVIDED CONDITION, 15% COKE IN FINELY SUBDIVIDED CONDITION AND A SMALL AMOUNT OF SULPHURIC ACID INTO THE FORM OF A BRICK OF THE LIKE, DEVELOPING AN IRON SULPHATE BOND BY REACTION OF THE ACID WITH THE ORE, PLACING THE BRICK IN SPACED RELATION IN A HEATING CHAMBER WITH EXTERIORS DIRECTLY EXPOSED TO A REDUCING ATMOSPHERE IN THE CHAMBER, AND HEATING THE BRICK IN SAID CHAMBER IN A REDUCING ATMOSPHERE TO ABOUT 2000 DEGEES F. TO REDUCE IRON ORE TO ABOUT 75% METALLIS IRON AND PARTLY TO FUSE THE BRICK, SAID HEATING BEING CONTINUED SO AS PROGRESSIVELY PARTLY TO FUSE THE BRICK FROM BY TO INCREASE ITS THERMAL CONDUCTIVITY.
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) | 1958-06-27 | 1958-12-27 | 1959-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-27 | 1962-12-27 | 1963-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-27 | 1966-12-27 | 1967-06-28 | $7700.00 | Window Closed / Lapsed |