US3081954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for recovering reusable metallics from steel making slag and refuse
Assignee: Enviri Corp
•
Filing: 1960-06-27
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Granted: 1963-03-19
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Expires: 1980-06-27
Abstract
No abstract record available.
Inventors
- 👤 Eric H Heckett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:46
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/48; B03B5/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
THE METHOD OF PROCESSING LARGE VOLUMES OF INTERMINGLED STEEL-MAKING SLAG AND REFUSE TO RECOVER REUSABLE METALLICS THEREFROM SEPARATED AS TO SIZE WHICH CONSISTS OF SUBJECTING SAID SLAG AND REFUST TO AN INITIAL COARSE SIZE SEPARATION, MAGNETICALY SEPARATING THE RESULTANT SMALLER SIZE COMPONENT TO PROVIDE A CHARGE HAVING A PERCEPTIBLE METAL CONTENT, SUBJECTING SAID CHARGE TO VIOLENT TUMBLING AND IMPACTING TO BREAK AWAY AND CRUSH THE ENCRUSTING MATERIAL FROM AT LEAST THE LARGER OF THE METALLIC PIECES CON-
Claim 2
Independent Claim
77 words
THE METHOD OF PROCESSING LARGE VOLUMES OF INTERMINGLED STEEL-MAKING SLAG AND REFUSE TO RECOVER REUSABLE METALLICS THEREFROM SEPARATED AS TO SIZE WHICH CONSISTS OF SUBJECTING SAID SLAG AND REFUST TO AN INITIAL COARSE SIZE SEPARATION, MAGNETICALY SEPARATING THE RESULTANT SMALLER SIZE COMPONENT TO PROVIDE A CHARGE HAVING A PERCEPTIBLE METAL CONTENT, SUBJECTING SAID CHARGE TO VIOLENT TUMBLING AND IMPACTING TO BREAK AWAY AND CRUSH THE ENCRUSTING MATERIAL FROM AT LEAST THE LARGER OF THE METALLIC PIECES CON-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |