Patent US1782287A successfully refreshed from Google Patents.
Patent US2733809A successfully refreshed from Google Patents.
US2733809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation
Assignee: —
•
Filing: —
•
Granted: 1956-02-07
•
Expires: 1973-02-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:03
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/14; B03D1/16; B03D1/22; B03D1/02; B03D1/028; B03D1/1406; B03D1/1443; B03D1/1475; B03D1/1468
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
IN A PROCESS OF PREPARING A CONCENTRATE FROM A COARSE GRANULAR ORE FEED MATERIAL OF AN AVERAGE PARTICLE SIZE LARGE THAN FLAT NORMALLY USED FOR FROTH FLOATION WHEREIN A PULP IS PREPARED COMPRISING COARSE REGENTIZED GRANULAR ORE AND LIQUID MEDIUM IN WHICH AT LEAST THE CONCENTRATE IS INSOLUBLE, THE STEPS COMPRISING INTRODUCING A STREAM OF REAGENTIZED PULP DIRECTLY INTO AN AERATION AND AGITATION ZONE, SEPARATELY INTRODUCING SOLIDS-FREEE LIQUID MEDIUM IN WHICH AT LEAST THE CONCENTRATE IS INSOLUBLE INTO
Claim 2
Dependent Claim
78 words
IN A PROCESS OF PREPARING A CONCENTRATE FROM A COARSE GRANULAR ORE FEED MATERIAL OF AN AVERAGE PARTICLE SIZE LARGE THAN FLAT NORMALLY USED FOR FROTH FLOATION WHEREIN A PULP IS PREPARED COMPRISING COARSE REGENTIZED GRANULAR ORE AND LIQUID MEDIUM IN WHICH AT LEAST THE CONCENTRATE IS INSOLUBLE, THE STEPS COMPRISING INTRODUCING A STREAM OF REAGENTIZED PULP DIRECTLY INTO AN AERATION AND AGITATION ZONE, SEPARATELY INTRODUCING SOLIDS-FREEE LIQUID MEDIUM IN WHICH AT LEAST THE CONCENTRATE IS INSOLUBLE INTO
References Cited (Backward Citations)
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Cited
US1375211A
Cited
US2054539A
Cited
US2176107A
Cited
US2226170A
Cited
US2214206A
Cited
US2304270A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-06 | 1959-08-08 | 1960-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-06 | 1963-08-08 | 1964-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-06 | 1967-08-08 | 1968-02-07 | $7700.00 | Window Closed / Lapsed |