Patent US2711248A successfully refreshed from Google Patents.
US2711248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concentration of iron ores
Assignee: Jones and Laughlin Steel Corp
•
Filing: 1951-06-01
•
Granted: 1955-06-21
•
Expires: 1971-06-01
Abstract
No abstract record available.
Inventors
- 👤 Lawrence A Roe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:01
CPC Classifications
B; B03; B03C; B03C1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
THE PROCESS OF TREATING IRON ORE COMPOSED OF HETEROGENEOUS FINE PARTICLES OF MAGNETIZABLE IRON MINERAL ASSOCIATED WITH GANGUE COMPRISING CARRYING THE ORE PARTICLES UPWARDLY IN A STREAM OF WATER INTO A MAGNETIC FIELD, MAGNETIZING THE IRON MINERAL PARTICLES, THEREBY CAUSING THEM TO FORM BY MAGNETIC ATTRACTION LOOSELY COMPACTED MASSES ASSOCIATED WITH GANGUE WHICH SINK OUT OF THE MAGNETIZING FIELD, DISINTEGRATING THESE LOOSELY COMPACTED MASSES BY
Claim 2
Dependent Claim
65 words
THE PROCESS OF TREATING IRON ORE COMPOSED OF HETEROGENEOUS FINE PARTICLES OF MAGNETIZABLE IRON MINERAL ASSOCIATED WITH GANGUE COMPRISING CARRYING THE ORE PARTICLES UPWARDLY IN A STREAM OF WATER INTO A MAGNETIC FIELD, MAGNETIZING THE IRON MINERAL PARTICLES, THEREBY CAUSING THEM TO FORM BY MAGNETIC ATTRACTION LOOSELY COMPACTED MASSES ASSOCIATED WITH GANGUE WHICH SINK OUT OF THE MAGNETIZING FIELD, DISINTEGRATING THESE LOOSELY COMPACTED MASSES BY
References Cited (Backward Citations)
US509728A
Cited
US827499A
Cited
US954016A
Cited
US954015A
Cited
US1392413A
Cited
US1491600A
Cited
GB226588A
Cited
GB416534A
Cited
US2078513A
Cited
US2258194A
Cited
DE681907C
Cited
US2276075A
Cited
US2309923A
Cited
US2468586A
Cited
US2563086A
Cited
US2558635A
Cited
US2612262A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-20 | 1958-12-20 | 1959-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-20 | 1962-12-20 | 1963-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-20 | 1966-12-20 | 1967-06-21 | $7700.00 | Window Closed / Lapsed |