Patent US2772235A successfully refreshed from Google Patents.
US2772235A
Expired / Lapsed
US
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Liquid treatment apparatus
Assignee: Cochrane Corp
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Filing: 1954-10-14
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Granted: 1956-11-27
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Expires: 1974-10-14
Abstract
No abstract record available.
Inventors
- 👤 Ervin J Bookout
- 👤 Gibson T Hutchison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:58
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/42; C02F1/52; C02F1/5281
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
LIQUID TREATMENT APPARATUS COMPRISING A LIQUID TREATMENT TANK INCLUDING A FIRST LIQUID TREATMENT COMPARTMENT AND A LIQUID STORAGE COMPARTMENT, MEANS PROVIDING A SECOND LIQUID TREATMENT COMPARTMENT, MEANS FOR CONDUCTING LIQUID TO BE TREATED TO SAID FIRST TREATMENT COMPARTMENT, MEANS FOR CONDUCTING TREATED LIQUID FROM SAID FIRST TREATMENT COMPARTMENT TO ONE SIDE OF SAID SECOND TREATMENT COMPARTMENT, MEANS FOR CONDUCTING ADDITIONALLY TREATED LIQUID FROM THE OTHER SIDE OF SAID SECOND TREATMENT COMPARTMENT, MEANS FOR CONDUCTING LIQUID FROM SAID OTHER SIDE OF SAID SECOND TREATMENT COMPARTMENT TO SAID STORAGE COMPARTMENT,A FLOW CONTROL MEANS IN SAID LAST MENTIONED CONDUCTING MEANS, MEANS RESPONSIVE TO THE LIQUID LEVEL IN SAID FIRST TREATMENT COMPARTMENT FOR POSITIONING SAID FLOW CONTROL MEANS, MEAND FOR CONDUCTING LIQUID FROM SAID STROGE COMPARTMENT TO SAID OTHER SIDE OF SAID SECOND TREATMENT COMPARTMENT, AND MEANS FOR CONDUCTING LIQUID FROM SAID ONE SIDE OF SAID SECOND TREATMENT COMPARTMENT TO SAID FIRST TREATMENT COMPARTMENT.
Claim 2
Dependent Claim
150 words
LIQUID TREATMENT APPARATUS COMPRISING A LIQUID TREATMENT TANK INCLUDING A FIRST LIQUID TREATMENT COMPARTMENT AND A LIQUID STORAGE COMPARTMENT, MEANS PROVIDING A SECOND LIQUID TREATMENT COMPARTMENT, MEANS FOR CONDUCTING LIQUID TO BE TREATED TO SAID FIRST TREATMENT COMPARTMENT, MEANS FOR CONDUCTING TREATED LIQUID FROM SAID FIRST TREATMENT COMPARTMENT TO ONE SIDE OF SAID SECOND TREATMENT COMPARTMENT, MEANS FOR CONDUCTING ADDITIONALLY TREATED LIQUID FROM THE OTHER SIDE OF SAID SECOND TREATMENT COMPARTMENT, MEANS FOR CONDUCTING LIQUID FROM SAID OTHER SIDE OF SAID SECOND TREATMENT COMPARTMENT TO SAID STORAGE COMPARTMENT,A FLOW CONTROL MEANS IN SAID LAST MENTIONED CONDUCTING MEANS, MEANS RESPONSIVE TO THE LIQUID LEVEL IN SAID FIRST TREATMENT COMPARTMENT FOR POSITIONING SAID FLOW CONTROL MEANS, MEAND FOR CONDUCTING LIQUID FROM SAID STROGE COMPARTMENT TO SAID OTHER SIDE OF SAID SECOND TREATMENT COMPARTMENT, AND MEANS FOR CONDUCTING LIQUID FROM SAID ONE SIDE OF SAID SECOND TREATMENT COMPARTMENT TO SAID FIRST TREATMENT COMPARTMENT.
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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) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |