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 16:21
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)
US1035145A
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 |