Patent US3607791A successfully refreshed from Google Patents.
US3607791A
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Method for removing hydrocarbons
Assignee: Phillips Petroleum Co
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Filing: 1969-12-10
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Granted: 1971-09-21
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Expires: 1989-12-10
Abstract
Abstract A method for removing hydrocarbons from the surface of a body of water by placing a polypropylene sheet over and in contact with the hydrocarbons and combusting those hydrocarbons passing onto the upper surface of the sheet.
Inventors
- 👤 Francis J Shell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:27
CPC Classifications
E; E02; E02B; E02B15/00; E02B15/04; E02B15/042; Y; Y02; Y02A; Y02A20/00; Y02A20/20; Y02A20/204; Y10; Y10S; Y10S210/00; Y10S210/918; Y10S210/922; Y10S210/924
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
24 words
A method, as set forth in claim 1, including covering substantially all of the hydrocarbons located on the water surface with a single sheet.
Claim 2
Dependent Claim
16 words
A method, as set forth in claim 1, wherein the sheet is needle-punched, nonwoven polypropylene fabric.
Claim 3
Dependent Claim
68 words
A method, as set forth in claim 1, including placing a material sheet over and in contact with the hydrocarbons by elevating one end of the sheet a distance above the surface of the hydrocarbons, maintaining said end between at least two vehicles, and pulling said sheet raised end first toward and to a desired position relative to the hydrocarbons; and thereafter releasing said end from the vehicles.
Claim 4
Dependent Claim
33 words
A method, as set forth in claim 1, including providing a material sheet having a plurality of elongated reinforced elements connected thereto, said reinforcing elements having a density less that that of water.
Claim 5
Dependent Claim
26 words
A method, as set forth in claim 1, including attaching a plurality of material sheets one to the other to form a single composite material sheet.
Claim 6
Dependent Claim
14 words
A method, as set forth in claim 1, wherein the synthetic material is polyethylene.
Claim 7
Dependent Claim
14 words
A method, as set forth in claim 1, wherein the synthetic material is polypropylene.
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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |