Patent US2619443A successfully refreshed from Google Patents.
Patent US2820759A successfully refreshed from Google Patents.
US2820759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of separating froths from liquids
Assignee: Individual
•
Filing: 1954-05-04
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Granted: 1958-01-21
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Expires: 1974-05-04
Abstract
No abstract record available.
Inventors
- 👤 Gilbert P Monet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:04
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A METHOD OF SEPARATING SOLIDS FROM LIQUID COMPRISING THE STEPS OF INTRODUCING A FLOW OF GAS INTO THE LOWER PORTION OF A LIQUID BATH TO AGITATE IT, ADDING A SURFACE ACTIVE AGENT TO THE MIXTURE, DISPERSING THE GAS AS IT PASSES UP THROUGH THE LIQUID OF THE BATH TO INITIATE FROTHING, PASSING THE LIQUID THROUGH A LIQUID PREVIOUS
Claim 2
Independent Claim
58 words
A METHOD OF SEPARATING SOLIDS FROM LIQUID COMPRISING THE STEPS OF INTRODUCING A FLOW OF GAS INTO THE LOWER PORTION OF A LIQUID BATH TO AGITATE IT, ADDING A SURFACE ACTIVE AGENT TO THE MIXTURE, DISPERSING THE GAS AS IT PASSES UP THROUGH THE LIQUID OF THE BATH TO INITIATE FROTHING, PASSING THE LIQUID THROUGH A LIQUID PREVIOUS
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
US2693946A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |