US4385121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medium and process for disposing of hydrocarbon wastes
Assignee: Chevron USA Inc
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Filing: 1981-10-07
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Granted: 1983-05-24
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Expires: 2001-10-07
Abstract
Abstract An improved landfarming medium and process is disclosed in which hydrocarbon wastes are disposed of by dispersing them in a medium composed of a mixture of soil containing hydrocarbon-oxidizing microorganisms and a spent, solid, particulate, porous hydrocarbon cracking catalyst and/or a spent, solid, particulate, porous filtration medium.
Inventors
- 👤 Harold E. Knowlton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:18
CPC Classifications
B; B09; B09C; B09C1/00; B09C1/10; C; C09; C09K; C09K3/00; C09K3/32; C12; C12N; C12N1/00; C12N1/20; C12N1/26; C12N1/28
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
75 words
A medium for disposing of hydrocarbon wastes comprising a mixture of soil containing hydrocarbon oxidizing microorganisms and at least one of a spent, solid, particulate, porous hydrocarbon cracking catalyst or a spent, solid, particulate, porous filtration medium, said spent catalyst or spent filtration medium containing at least one of carbonaceous, sulfur and metal residual material wherein the volume ratio of soil to catalyst or filtration medium is in the range of about 1:9 to 9:1.
Claim 2
Independent Claim
75 words
A medium for disposing of hydrocarbon wastes comprising a mixture of soil containing hydrocarbon oxidizing microorganisms and at least one of a spent, solid, particulate, porous hydrocarbon cracking catalyst or a spent, solid, particulate, porous filtration medium, said spent catalyst or spent filtration medium containing at least one of carbonaceous, sulfur and metal residual material wherein the volume ratio of soil to catalyst or filtration medium is in the range of about 1:9 to 9:1.
Claim 3
Dependent Claim
16 words
The medium for disposing of hydrocarbon wastes of claim 1 wherein the microorganisms are predominantly bacteria.
Claim 4
Dependent Claim
31 words
The medium for disposing of hydrocarbon wastes of claim 1 wherein the surface area of the catalyst or filtration medium is in the range of 100 to 500 m 2 /g.
Claim 5
Dependent Claim
24 words
The medium for disposing of hydrocarbon wastes of claim 1 wherein the pH of the mixture is in the range of 5 and 9.
Claim 6
Dependent Claim
19 words
The medium for disposing of hydrocarbon wastes of claim 1 wherein the pH of the mixture is approximately neutral.
Claim 7
Dependent Claim
31 words
The medium for disposing of hydrocarbon wastes of claim 1 wherein the mixture contains sufficient amounts of nitrogen and phosphate sources and trace minerals to support the microbes in the mixture.
Claim 8
Dependent Claim
24 words
A process for disposing of a hydrocarbon waste comprising dispersing the waste in the mixture of claim 1, 2, 3, 4, 5, or 6.
Claim 9
Dependent Claim
24 words
The process of claim 7 wherein the amount of waste is in the range of one to 500 ml per kg of said mixture.
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) | 1986-05-23 | 1986-11-22 | 1987-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-23 | 1990-11-22 | 1991-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-23 | 1994-11-22 | 1995-05-24 | $7700.00 | Window Closed / Lapsed |