Patent US2669998A successfully refreshed from Google Patents.
Patent US2789090A successfully refreshed from Google Patents.
US2789090A
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Water clarifying devices
Assignee: Compagnie des Eaux et de lOzone France SA
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Filing: 1954-04-20
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Granted: 1957-04-16
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Expires: 1974-04-20
Abstract
No abstract record available.
Inventors
- 👤 Guillerd Jean
- 👤 Goutte Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:29
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/5281; Y; Y10; Y10T; Y10T137/00; Y10T137/402; Y10T137/4673; Y10T137/469
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A CYLINDRICAL FLOCCULATING DEVICE CONSISTING OF A PLURALITY OF RADIAL PRISMATIC COMPARTMENTS SUCCESSIVELY COMMUNICATING WITH EACH OTHER, EXCEPT THE FIRST AND THE LAST ONE, THROUGH DOWNWARDLY BENT PIPES OF INCREASING DIAMETERS, IMPARTING A HYDRAULIC MOTION TO THE WATER TO BE TREATED, A CYLINDRICAL CHAMBER IN THE CENTER OF SAID CYLINDER COLLECTING THE FLOCCULATED WATER FROM THE LAST COMPARTMENT OF THE FLOCCULATOR.
Claim 2
Dependent Claim
61 words
A CYLINDRICAL FLOCCULATING DEVICE CONSISTING OF A PLURALITY OF RADIAL PRISMATIC COMPARTMENTS SUCCESSIVELY COMMUNICATING WITH EACH OTHER, EXCEPT THE FIRST AND THE LAST ONE, THROUGH DOWNWARDLY BENT PIPES OF INCREASING DIAMETERS, IMPARTING A HYDRAULIC MOTION TO THE WATER TO BE TREATED, A CYLINDRICAL CHAMBER IN THE CENTER OF SAID CYLINDER COLLECTING THE FLOCCULATED WATER FROM THE LAST COMPARTMENT OF THE FLOCCULATOR.
References Cited (Backward Citations)
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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) | 1960-04-15 | 1960-10-15 | 1961-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-15 | 1964-10-15 | 1965-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-15 | 1968-10-15 | 1969-04-16 | $7700.00 | Window Closed / Lapsed |