Patent US3846290A successfully refreshed from Google Patents.
US3846290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reclamation of hydrocarbon contaminated ground waters
Assignee: Sun Research and Development Co
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Filing: 1972-09-29
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Granted: 1974-11-05
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Expires: 1992-09-29
Abstract
Abstract 1. A PROCESS FOR PURIFYING AN UNDERGROUND WATER SUPPLY CONTAINING HYDROCARBON CONTAMINANTS BY BIODEGRADING SAID HYDROCARBON CONTAMINANTS IN SAID UNDERGROUND WATER SUPPLY WITHOUT THE ADDITION OF MICROORGANISMS WHICH COMPRISES PROVIDING OXYGEN AND NUTRIENTS COMPRISED OF NITROGEN, PHOSPHORUS AND POTASSIUM FOR HYDROCARBON-CONSUMING MICROORGANISMS NORMALLY PRESENT IN SAID UNDERGOUND WATER, SAID NUTRIENTS AND OXYGEN BEING INTRODUCED THROUGH WELLS IN THE AREA OF SAID CONTAMINATED SUPPLY, AND REMOVING WATER FROM A WELL LOCATED WITHIN SAID CONTAMINATED AREA UNTIL HYDROCARBONS ARE REDUCED TO AN ACCEPTABLE LEVEL.
Inventors
- 👤 R Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:14
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/34; C02F3/344; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A PROCESS FOR PURIFYING AN UNDERGROUND WATER SUPPLY CONTAINING HYDROCARBON CONTAMINANTS BY BIODEGRADING SAID HYDROCARBON CONTAMINANTS IN SAID UNDERGROUND WATER SUPPLY WITHOUT THE ADDITION OF MICROORGANISMS WHICH COMPRISES PROVIDING OXYGEN AND NUTRIENTS COMPRISED OF NITROGEN, PHOSPHORUS AND POTASSIUM FOR HYDROCARBON-CONSUMING MICROORGANISMS NORMALLY PRESENT IN SAID UNDERGOUND WATER, SAID NUTRIENTS AND OXYGEN BEING
Claim 2
Dependent Claim
52 words
A PROCESS FOR PURIFYING AN UNDERGROUND WATER SUPPLY CONTAINING HYDROCARBON CONTAMINANTS BY BIODEGRADING SAID HYDROCARBON CONTAMINANTS IN SAID UNDERGROUND WATER SUPPLY WITHOUT THE ADDITION OF MICROORGANISMS WHICH COMPRISES PROVIDING OXYGEN AND NUTRIENTS COMPRISED OF NITROGEN, PHOSPHORUS AND POTASSIUM FOR HYDROCARBON-CONSUMING MICROORGANISMS NORMALLY PRESENT IN SAID UNDERGOUND WATER, SAID NUTRIENTS AND OXYGEN BEING
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |