US3870599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microbial degradation of petroleum
Assignee: Bioteknika International Inc
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Filing: 1973-02-20
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Granted: 1975-03-11
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Expires: 1993-02-20
Abstract
Abstract A process for the microbial degradation of petroleum or oily waste materials which comprises treating the petroleum or oily waste with a strain of Candida parapsilosis, Candida tropicalis or Candida utilis for a sufficient time until degradation has been achieved. The microorganism strains employed have a broad spectrum of degradation capability and are capable of degrading crude petroleum as well as a variety of organic molecules, including aliphatic, aromatic and heterocyclic compounds.
Inventors
- 👤 Edward N Azarowicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:27
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/681; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911; Y10S435/921; Y10S435/924
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
66 words
A process for the microbial degradation of aqueous polluting petroleum and oily wastes which comprises treating the petroleum or oily waste with at least one microorganism selected from the group consisting of Candida parapsilosis ATCC 20246, Candida tropicalis ATCC 20247 and Candida utilis ATCC 20248, and mutants thereof, in an aqueous system for a sufficient time until the treated petroleum oily waste has been substantially degraded.
Claim 2
Dependent Claim
66 words
A process for the microbial degradation of aqueous polluting petroleum and oily wastes which comprises treating the petroleum or oily waste with at least one microorganism selected from the group consisting of Candida parapsilosis ATCC 20246, Candida tropicalis ATCC 20247 and Candida utilis ATCC 20248, and mutants thereof, in an aqueous system for a sufficient time until the treated petroleum oily waste has been substantially degraded.
Claim 3
Dependent Claim
65 words
A PROCESS FOR THE MICROBIAL DEGRADITION OF AQUEOUS POLLUTING PETROLEUM OR OILY WHICH COMPRISES TREATING THE PETROLEUM OR OILY WASTE WITH AT LEAST ONE MICROORGANISM SELECTED FROM THE GROUP CONSISTING OF CANDIDA PARAPSILOSIS ATCC 20246, CANDIDA TROPICALIS ATCC 20247 AND CANDIDA UTILIS ATCC 20248, AND MUTANTS THEREOF, IN AN AQUEOUS SYSTEM FOR A SUFFICIENT TIME UNTIL THE TREATED PETROLEUM OILY WASTE HAS BEEN SUBSTANTIALLY DEGRADED.
Claim 4
Dependent Claim
65 words
A PROCESS FOR THE MICROBIAL DEGRADITION OF AQUEOUS POLLUTING PETROLEUM OR OILY WHICH COMPRISES TREATING THE PETROLEUM OR OILY WASTE WITH AT LEAST ONE MICROORGANISM SELECTED FROM THE GROUP CONSISTING OF CANDIDA PARAPSILOSIS ATCC 20246, CANDIDA TROPICALIS ATCC 20247 AND CANDIDA UTILIS ATCC 20248, AND MUTANTS THEREOF, IN AN AQUEOUS SYSTEM FOR A SUFFICIENT TIME UNTIL THE TREATED PETROLEUM OILY WASTE HAS BEEN SUBSTANTIALLY DEGRADED.
Claim 5
Dependent Claim
17 words
The process of claim 1, wherein said microorganism is employed in a dry powdery or pelletized forM.
Claim 6
Dependent Claim
14 words
The process of claim 1, wherein said microorganism is mixed with a cellulosic material.
Claim 7
Dependent Claim
21 words
The process of claim 1, wherein said microorganism is mixed with a cellulosic material, a nitrogen source and a phosphorus source.
Claim 8
Dependent Claim
12 words
The process of claim 4, wherein said nitrogen source is cottonseed protein.
Claim 9
Dependent Claim
16 words
The process of claim 1, wherein said microorganism is employed in a slurry or wet-packed form.
Claim 10
Dependent Claim
13 words
The process of claim 1, wherein said microorganism is Candida parapsilosis ATCC 20246.
Claim 11
Dependent Claim
13 words
The process of claim 1, wherein said microorganism is Candida tropicalis ATCC 20247.
References Cited (Backward Citations)
US3152983A
Cited
US3634227A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |