Patent US3252899A successfully refreshed from Google Patents.
US3252899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of water utilizing activated carbon
Assignee: General Services Co
•
Filing: 1964-04-01
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Granted: 1966-05-24
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Expires: 1984-04-01
Abstract
No abstract record available.
Inventors
- 👤 Archie H Rice
- 👤 Walter R Conley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:21
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/28; C02F1/283
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
THE PROCESS FOR REMOVING ORGANIC MATERIALS FROM WATER COMPRISING: ADDING THERETO A FILTER COMDITIONER AND FINELY DIVIDED ACTIVATED CARBON, AND SUBSTANTIALLY IMMEDIATELY THEREAFTER PASSING SAID WATER WITHOUT PRIOR SETTLING THROUGH A SEPARATION BED COMPRISING PARTICLES GRADING FROM COARSE TO FINE IN THE DIRECTION OF FLOW, SAID PARTICLES HAVING A MAXIMUM SIZE OF ABOUT 10 MILLIMETERS.
Claim 2
Dependent Claim
55 words
THE PROCESS FOR REMOVING ORGANIC MATERIALS FROM WATER COMPRISING: ADDING THERETO A FILTER COMDITIONER AND FINELY DIVIDED ACTIVATED CARBON, AND SUBSTANTIALLY IMMEDIATELY THEREAFTER PASSING SAID WATER WITHOUT PRIOR SETTLING THROUGH A SEPARATION BED COMPRISING PARTICLES GRADING FROM COARSE TO FINE IN THE DIRECTION OF FLOW, SAID PARTICLES HAVING A MAXIMUM SIZE OF ABOUT 10 MILLIMETERS.
References Cited (Backward Citations)
US2031711A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-23 | 1969-11-22 | 1970-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-23 | 1973-11-22 | 1974-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-23 | 1977-11-22 | 1978-05-24 | $7700.00 | Window Closed / Lapsed |