US2825691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treating impure liquids
Assignee: Dorr Oliver Inc
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Filing: 1949-08-26
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Granted: 1958-03-04
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Expires: 1969-08-26
Abstract
No abstract record available.
Inventors
- 👤 Anthony J Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:41
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/0018; B01D21/0039; B01D21/0042; B01D21/02; B01D21/04; B01D21/06; B01D21/08; B01D21/24; B01D21/2405; B01D21/2427; B01D21/2488
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
THE CONTINUOUS PROCESS FOR TREATING TRUBID LIQUIDS FOR FLOCCULATION AND SEDIMENTATION OF FINELY DIVIDED SOLIDS SUSPENDED THEREIN, WHICH COMPRISES ESTABLISHING AND MAINTAINING IN AN EVERCHANGING BODY THEREOF WITH A FIXED LIQUID LEVEL A SEDIMENTATION ZONE, AND A FLOCCULATION AGITATION ZONE SHIELDED ENTIRELY SIDEWISE AND PARTIALLY BOTTOMWISE FROM THE SEDIMENTATION ZONE; FORCIBLY INTRODUCING TURBID LIQUID TO BE TREATED SUBMERGEDLY AND RADIALLY INTO THE UPPER PORTION OF THE ZONE OF FLOCCULATION AGITATION; FLOCCULATING SUSPENDED SOLIDS THEREIN AND CONDITIONING THE THUS FORMED FLOCS THEREIN FOR RAPID SETTLING; PASSING BY GRAVITY FLOW LIQUID AND SETTLEABLE SOLIDS COMPRISING FLOCCULATED SOLIDS THROUGH THE UNSHIELDED PORTION OF THE BOTTOM THE ZONE OF FLOCCULATION AGITATION DIRECTLY INTO THE SEDIMENTATION ZONE AND SETTLING SOLIDS THEREIN; WITHDRAWING CLARIFIED EFFLUENT FROM THE ZONE OF SEDIMEN-
Claim 2
Dependent Claim
124 words
THE CONTINUOUS PROCESS FOR TREATING TRUBID LIQUIDS FOR FLOCCULATION AND SEDIMENTATION OF FINELY DIVIDED SOLIDS SUSPENDED THEREIN, WHICH COMPRISES ESTABLISHING AND MAINTAINING IN AN EVERCHANGING BODY THEREOF WITH A FIXED LIQUID LEVEL A SEDIMENTATION ZONE, AND A FLOCCULATION AGITATION ZONE SHIELDED ENTIRELY SIDEWISE AND PARTIALLY BOTTOMWISE FROM THE SEDIMENTATION ZONE; FORCIBLY INTRODUCING TURBID LIQUID TO BE TREATED SUBMERGEDLY AND RADIALLY INTO THE UPPER PORTION OF THE ZONE OF FLOCCULATION AGITATION; FLOCCULATING SUSPENDED SOLIDS THEREIN AND CONDITIONING THE THUS FORMED FLOCS THEREIN FOR RAPID SETTLING; PASSING BY GRAVITY FLOW LIQUID AND SETTLEABLE SOLIDS COMPRISING FLOCCULATED SOLIDS THROUGH THE UNSHIELDED PORTION OF THE BOTTOM THE ZONE OF FLOCCULATION AGITATION DIRECTLY INTO THE SEDIMENTATION ZONE AND SETTLING SOLIDS THEREIN; WITHDRAWING CLARIFIED EFFLUENT FROM THE ZONE OF SEDIMEN-
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) | 1961-03-03 | 1961-09-02 | 1962-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-03 | 1965-09-02 | 1966-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-03 | 1969-09-02 | 1970-03-04 | $7700.00 | Window Closed / Lapsed |