Patent US3349030A successfully refreshed from Google Patents.
US3349030A
Expired / Lapsed
US
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Process and apparatus for the clarification treatment of solids-carrying liquids
Assignee: Dorr Oliver Inc
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Filing: 1964-12-21
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Granted: 1967-10-24
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Expires: 1984-12-21
Abstract
No abstract record available.
Inventors
- 👤 Elton S Savage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:50
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/02; B01D21/0018; B01D21/0021; B01D21/0024; B01D21/0039; B01D21/0042; B01D21/01; B01D21/04; B01D21/06; B01D21/08; B01D21/18; B01D21/24; B01D21/2405; B01D21/2427; B01D21/2444; B01D21/245; B01D21/30; B01D21/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
IN A PROCESS FOR TREATING LIQUIDS CONTAINING SUSPENDED SOLIDS, IN A TANK PROVIDED WITH A FLOCCULATION ZONE WHEREIN SAID SOLIDS ARE FLOCCULATED IN THE PRESENCE OF PREVIOUSLY SETTLED SOLIDS AND A CLARIFICATION ZONE WHEREIN THE THUS FLOCCULATED SOLIDS ARE PERMITTED TO SETTLE WHEREBY CLARIFIED LIQUID IS DISCHARGED AS OVERFLOW FROM SAID TANK AND SETTLED SLUDGE SOLIDS ARE DISCHARGED FROM THE BOTTOM OF SAID TANK, THE IMPROVEMENT COMPRISING CONTINUOUSLY FEEDING RAW LIQUID TO BE TREATED INTO SAID FLOCCULATION ZONE WHEREIN SUSPENDED SOLIDS ARE CONTACTED WITH EACH OTHER AS WELL AS WITH RECIRCULATED SOLIDS WHILE MAINTAINING RELATIVELY GENTLY AGITATION SUFFICIENT TO PROMOTE FLOC FORMATION SELECTIVELY RECIRCULATING A PREDETERMINED PRO
Claim 2
Dependent Claim
107 words
IN A PROCESS FOR TREATING LIQUIDS CONTAINING SUSPENDED SOLIDS, IN A TANK PROVIDED WITH A FLOCCULATION ZONE WHEREIN SAID SOLIDS ARE FLOCCULATED IN THE PRESENCE OF PREVIOUSLY SETTLED SOLIDS AND A CLARIFICATION ZONE WHEREIN THE THUS FLOCCULATED SOLIDS ARE PERMITTED TO SETTLE WHEREBY CLARIFIED LIQUID IS DISCHARGED AS OVERFLOW FROM SAID TANK AND SETTLED SLUDGE SOLIDS ARE DISCHARGED FROM THE BOTTOM OF SAID TANK, THE IMPROVEMENT COMPRISING CONTINUOUSLY FEEDING RAW LIQUID TO BE TREATED INTO SAID FLOCCULATION ZONE WHEREIN SUSPENDED SOLIDS ARE CONTACTED WITH EACH OTHER AS WELL AS WITH RECIRCULATED SOLIDS WHILE MAINTAINING RELATIVELY GENTLY AGITATION SUFFICIENT TO PROMOTE FLOC FORMATION SELECTIVELY RECIRCULATING A PREDETERMINED PRO
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) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |