US3573202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for reduction of water pollution due to domestic and industrial wastes
Assignee: Georgia Pacific Consumer Products LP
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Filing: 1970-03-05
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Granted: 1971-03-30
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Expires: 1990-03-05
Abstract
Abstract A PROCESS FOR REDUCTION OF WATER POLLUTION DUE TO DOMESTIC AND INDUSTRIAL WASTES, FOR EXAMPLE, WASTE FROM DE-INKED PULP MAKING PROCESSES, COMPRISING THE TREATMENT OF SUCH WASTES IN TWO MAIN STAGES TO PRODUCE A MODIFIED PRIMARY-SECONDARY SLUDGE WHICH HAS A CONSISTENCY OF 2025% SOLIDS, AND IS STABLE AND ODOR FREE, AS SUCH USEFUL FOR LAND FILL. THE SOLE LIQUID EFFLUENT IS FROM THE SECONDARY STAGE WHICH IS 85%-95% FREE OF POLLUTANTS, CALCULATED AS POUNDS OF BOD OF THE INITIAL DE-INKING WASTES, THUS RESULTING IN A 7 TO 20-FOLD DECREASE IN POLLUTANTS.
Inventors
- 👤 John Thomas Sobota
- 👤 David Frederick Pagel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:22
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/1205; C02F3/1215; C02F2103/00; C02F2103/26; C02F2103/28; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
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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) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |