US4087356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for depolluting fresh and sea water from petroleum products
Assignee: Anic SpA
•
Filing: 1976-11-04
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Granted: 1978-05-02
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Expires: 1996-11-04
Abstract
Abstract A method is disclosed, for depolluting fresh and sea waters from hydrocarbonaceous pollutants, the improvement consisting in that the usual microorganism cultures used for oxidizing the hydrocarbons are integrated by lipophilic and floating compounds which contain slow-release nitrogen in a form which can be assimilated by such micro-organisms. Ureidic derivatives of higher aldehydes are the preferred compounds. Inert supports can be used, if necessary, and still better results are achieved when using also nonionic dispersants and freeze-dried hydrocarbon-oxidizing microorganisms.
Inventors
- 👤 Walter Marconi
- 👤 Roberto Olivieri
- 👤 Ludwig Degen
- 👤 Andrea Robertiello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:04
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/681; C02F3/00; C02F3/34; Y; Y10; Y10S; Y10S210/00; Y10S210/918; Y10S210/922
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
54 words
A method of removing hydrocarbonaceous pollutants from the surface of water which is polluted thereby and which contains aqueous microorganisms capable of metabolizing said hydrocarbonaceous pollutants, which comprises dispersing over said polluted surface particles comprised of: (a) paraffinized magnesium ammonium phosphate; (b) a ureidic derivative selected from 1-ureido-1-hydroxy-3-methyl-butane, crotonylidene-diurea, and 1-ureido-1-hydroxy-3-phenylpropane; and (c) 2,2'-hydroxydiethylolamide.
Claim 2
Independent Claim
54 words
A method of removing hydrocarbonaceous pollutants from the surface of water which is polluted thereby and which contains aqueous microorganisms capable of metabolizing said hydrocarbonaceous pollutants, which comprises dispersing over said polluted surface particles comprised of: (a) paraffinized magnesium ammonium phosphate; (b) a ureidic derivative selected from 1-ureido-1-hydroxy-3-methyl-butane, crotonylidene-diurea, and 1-ureido-1-hydroxy-3-phenylpropane; and (c) 2,2'-hydroxydiethylolamide.
Claim 3
Independent Claim
58 words
The method of removing hydrocarbonaceous pollutants from the surface of water which is polluted thereby and which contains aqueous microorganisms capable of metabolizing said hydrocarbonaceous pollutants, which comprises dispersing over said polluted surface particles comprised of: (a) paraffinized magnesium ammonium phosphate; (b) a ureidic derivative selected from 1-ureido-1-hydroxy-3-methyl-butane, crotonylidene-diurea, and 1-ureido-1-hydroxy-3-phenylpropane; (c) 2,2'-hydroxydiethylolamide; and (d) freeze-dried hydrocarbon-oxidizing microorganisms.
Claim 4
Independent Claim
58 words
The method of removing hydrocarbonaceous pollutants from the surface of water which is polluted thereby and which contains aqueous microorganisms capable of metabolizing said hydrocarbonaceous pollutants, which comprises dispersing over said polluted surface particles comprised of: (a) paraffinized magnesium ammonium phosphate; (b) a ureidic derivative selected from 1-ureido-1-hydroxy-3-methyl-butane, crotonylidene-diurea, and 1-ureido-1-hydroxy-3-phenylpropane; (c) 2,2'-hydroxydiethylolamide; and (d) freeze-dried hydrocarbon-oxidizing microorganisms.
Claim 5
Independent Claim
45 words
The method of removing hydrocarbonaceous pollutants from the surface of water which is polluted thereby and which contains aqueous microorganisms capable of metabolizing said hydrocarbonaceous pollutants, which comprises dispersing over said polluted surface particles comprised of: (a) paraffinized magnesium and ammonium phosphate; and (b) 1-ureido-1-hydroxy-3-methyl-butane.
Claim 6
Independent Claim
45 words
The method of removing hydrocarbonaceous pollutants from the surface of water which is polluted thereby and which contains aqueous microorganisms capable of metabolizing said hydrocarbonaceous pollutants, which comprises dispersing over said polluted surface particles comprised of: (a) paraffinized magnesium and ammonium phosphate; and (b) 1-ureido-1-hydroxy-3-methyl-butane.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-01 | 1981-10-31 | 1982-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-01 | 1985-10-31 | 1986-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-01 | 1989-10-31 | 1990-05-02 | $7700.00 | Window Closed / Lapsed |