US3084987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the pressure filtration of suspensions of solids in liquids
Assignee: Deka SA
•
Filing: 1960-03-29
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Granted: 1963-04-09
•
Expires: 1980-03-29
Abstract
No abstract record available.
Inventors
- 👤 Bounin Claude
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:43
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/20; B01D33/00; B01D33/04; B01D33/042; B01D33/44; B01D33/46; B01D33/465; B01D33/70; B01D33/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A PROCESS OF FILTERING LIQUIDS OUT OF SUSPENSIONS OF SOLIDS IN LIQUIDS COMPRISING CONTINUOUSLY FEEDING SUSPENSION INTO A PLURALITY OF CONTINUOUSLY MOVING AND SUCCESSIVE FILTERING ZONES EACH HAVING A FILTERING MEDIUM THEREIN, CONFINING THE SUSPENSION IN THE SUCCESSIVE ZONES TO PREVENT ESCAPE OF LIQUID EXCEPT THROUGH THE FILTERING MEDIUM THEREIN, MOVING THE ZONES THROUGH A PRESSURE APPLYING REGION AND IN SUCH REGION APPLYING PRESSURE ON TO THE SUSPENSION IN EACH ZONE IN A DIRECTION TRANSVERSE TO THE DIRECTION OF MOVEMENT OF THE ZONES TO FORCE LIQUID THROUGH THE FILTERING MEDIUM IN EACH ZONE TO EFFECT A FIRST FILTRATION, CONTINUING THE MOVEMENT OF THE ZONES, REMOVING THE RESIDUE OF SOLIDS FROM EACH ZONE, CONTINUOUSLY INVERTING THE
Claim 2
Dependent Claim
115 words
A PROCESS OF FILTERING LIQUIDS OUT OF SUSPENSIONS OF SOLIDS IN LIQUIDS COMPRISING CONTINUOUSLY FEEDING SUSPENSION INTO A PLURALITY OF CONTINUOUSLY MOVING AND SUCCESSIVE FILTERING ZONES EACH HAVING A FILTERING MEDIUM THEREIN, CONFINING THE SUSPENSION IN THE SUCCESSIVE ZONES TO PREVENT ESCAPE OF LIQUID EXCEPT THROUGH THE FILTERING MEDIUM THEREIN, MOVING THE ZONES THROUGH A PRESSURE APPLYING REGION AND IN SUCH REGION APPLYING PRESSURE ON TO THE SUSPENSION IN EACH ZONE IN A DIRECTION TRANSVERSE TO THE DIRECTION OF MOVEMENT OF THE ZONES TO FORCE LIQUID THROUGH THE FILTERING MEDIUM IN EACH ZONE TO EFFECT A FIRST FILTRATION, CONTINUING THE MOVEMENT OF THE ZONES, REMOVING THE RESIDUE OF SOLIDS FROM EACH ZONE, CONTINUOUSLY INVERTING THE
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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) | 1966-04-08 | 1966-10-08 | 1967-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-08 | 1970-10-08 | 1971-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-08 | 1974-10-08 | 1975-04-09 | $7700.00 | Window Closed / Lapsed |