Patent US3573815A successfully refreshed from Google Patents.
Patent US2161795A successfully refreshed from Google Patents.
Patent US3241943A successfully refreshed from Google Patents.
US3241943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the production of a fertilizer or soil improvement agent from sulfite waste liquor while recovering acids and combustible gases formed in the process
Assignee: Individual
•
Filing: 1963-04-10
•
Granted: 1966-03-22
•
Expires: 1983-04-10
Abstract
No abstract record available.
Inventors
- 👤 Bystrom Sven Gustav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:17
CPC Classifications
C; C05; C05F; C05F7/00; C05F7/02; C02; C02F; C02F3/00; C02F3/28; Y; Y02; Y02E; Y02E50/00; Y02E50/30; Y02W; Y02W30/00; Y02W30/40; Y10; Y10S; Y10S435/00; Y10S435/801; Y10S435/819
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
A METHOD FOR THE PRODUCTION OF A FERTILIZER AND SOIL IMPROVEMENT AGENT FROM SULFITE WASTE LIQUOR BY FERMENTATION WHILE RECOVERING ACIDS AND COMBUSTIBLE GASES FORMED IN THE PROCESS, SAID METHOD COMPRISING ADJUSTING THE TEMPPERATURE OF THE SULFITE WASTE LIQUOR TO A VALUE OF UP TO 60*C., ADJUSTING TH PH OF SAID LIQUOR TO A VALUE WITHIN THE RANGE OF 7 TO 10.5 BY ADDING THERETO AN ALKALINE AGENT SELECTED FROM THE GROUP CONSISTING OF AMMONIA, AND CARBONATES, BICARBONATES, OXIDES AND HYDROXIDES OF ALKALI AND ALKALINE EARTH METALS, INOCULATING SAID LIQUOR WITH A BACTERIA CONTAINING PUTREFIED SLUDGE FROM A SEWAGE PURIFICATION PROCESS, SUBJECTING THE INCULATED LIQUOR TO AN AEROBIC FERMENTATION UNDER AERATION FOR A PERIOD OF ABOUT 5 TO 7 HOURS AND THEN TO AN ANAEROBIC FERMENTATION FOR A PERIOD OF UP TO 5 DAYS WHILE MAINTAINING THE PH OF THE LIQUOR WITHIN THE AFOREMENTIONED RANGE BY ADDING SAID ALKALINE AGENT THERETO WHEN THE PH TENDS TO FALL DUE TO MICROBIOLOGICAL FORMATION OF ACETIC ACID, AND RECOVERING THE FERMENTED BACTERIA CONTAINING LIQUOR.
Claim 2
Independent Claim
171 words
A METHOD FOR THE PRODUCTION OF A FERTILIZER AND SOIL IMPROVEMENT AGENT FROM SULFITE WASTE LIQUOR BY FERMENTATION WHILE RECOVERING ACIDS AND COMBUSTIBLE GASES FORMED IN THE PROCESS, SAID METHOD COMPRISING ADJUSTING THE TEMPPERATURE OF THE SULFITE WASTE LIQUOR TO A VALUE OF UP TO 60*C., ADJUSTING TH PH OF SAID LIQUOR TO A VALUE WITHIN THE RANGE OF 7 TO 10.5 BY ADDING THERETO AN ALKALINE AGENT SELECTED FROM THE GROUP CONSISTING OF AMMONIA, AND CARBONATES, BICARBONATES, OXIDES AND HYDROXIDES OF ALKALI AND ALKALINE EARTH METALS, INOCULATING SAID LIQUOR WITH A BACTERIA CONTAINING PUTREFIED SLUDGE FROM A SEWAGE PURIFICATION PROCESS, SUBJECTING THE INCULATED LIQUOR TO AN AEROBIC FERMENTATION UNDER AERATION FOR A PERIOD OF ABOUT 5 TO 7 HOURS AND THEN TO AN ANAEROBIC FERMENTATION FOR A PERIOD OF UP TO 5 DAYS WHILE MAINTAINING THE PH OF THE LIQUOR WITHIN THE AFOREMENTIONED RANGE BY ADDING SAID ALKALINE AGENT THERETO WHEN THE PH TENDS TO FALL DUE TO MICROBIOLOGICAL FORMATION OF ACETIC ACID, AND RECOVERING THE FERMENTED BACTERIA CONTAINING LIQUOR.
References Cited (Backward Citations)
US1550537A
Cited
US1710272A
Cited
US1976905A
Cited
US2663628A
Cited
US2774754A
Cited
US2867521A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |