US2908652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for defoaming liquids
Assignee: Individual
•
Filing: 1955-08-15
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Granted: 1959-10-13
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Expires: 1975-08-15
Abstract
No abstract record available.
Inventors
- 👤 Forrester Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:45
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02; B01F; B01F27/00; B01F27/80; B01F27/90; B01F27/902
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
98 words
PROCESS OF DEFOAMING A LIQUID WHICH COMPRISES CONTINOUSLY FEEDING A LIQUID CONTAINING BUBBLES OF GAS INTO THE TOP OF A CLOSED CHAMBER, CONTINUOUSLY WITHDRAWING LIQUID FROM SAID CHAMBER ADJACENT TO THE BOTTOM THEREOF, REGULATING THE RELATIVE RATES OF SUPPLY AND WITHDRAWAL OF LIQUID INTO AND OUT OF SAID CHAMBER SO AS TO MAINTAIN A SUBSTANTIALLY CONSTANT LEVEL OF LIQUID THEREIN, MAINTAINING A VUCUUM IN SAID CHAMBER, AND CONTINOUSLY SUBJECTING BOTH THE BODY OF LIQUID IN SAID CHAMBER AND THE LAYER OF FOAM WHICH COLLECTS ON THE UPPER SURFACE THEREOF TO A SHEARING ACTION BETWEEN RELATIVELY MOVING SOLID SURFACES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |