Patent US4340486A successfully refreshed from Google Patents.
US4340486A
Expired / Lapsed
US
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Oil sorbent structures and method of picking up oil
Assignee: Leucadia Inc
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Filing: 1979-08-16
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Granted: 1982-07-20
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Expires: 1999-08-16
Abstract
Abstract A mass of net-like material of oleophilic, hydrophobic netting material is formed from strips of netting secured into a loose mass. Oil contacting the mass is sorbed by the strands and tends to bridge the openings in the net-like material to increase the short term oil pick up capacity.
Inventors
- 👤 Clare E. Swanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:49
CPC Classifications
E; E02; E02B; E02B15/00; E02B15/04; E02B15/10; E02B15/101; C; C02; C02F; C02F1/00; C02F1/68; C02F1/681; Y; Y02; Y02A; Y02A20/00; Y02A20/20; Y02A20/204; Y10; Y10S; Y10S210/00; Y10S210/918; Y10S210/922; Y10S210/924
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
95 words
A method of picking up oil, said method comprising contacting the oil with an oil sorber, said oil sorber comprising a plurality of adjacent strips of oleophilic, hydrophobic, flexible netting material bound together, said strips of netting material: (a) being from about 2 to about 10 inches in width; (b) being formed by extrusion with a plurality of sets of strands which cross at an angle; (c) having from 2 to about 5 strands per lineal inch; (d) being biaxially oriented; and (e) weighing from about 1/2 to about 5 pounds per thousand square feet.
Claim 2
Independent Claim
95 words
A method of picking up oil, said method comprising contacting the oil with an oil sorber, said oil sorber comprising a plurality of adjacent strips of oleophilic, hydrophobic, flexible netting material bound together, said strips of netting material: (a) being from about 2 to about 10 inches in width; (b) being formed by extrusion with a plurality of sets of strands which cross at an angle; (c) having from 2 to about 5 strands per lineal inch; (d) being biaxially oriented; and (e) weighing from about 1/2 to about 5 pounds per thousand square feet.
Claim 3
Dependent Claim
20 words
The method of claim 1 wherein the plurality of adjacent strips are formed from one continuous piece of netting material.
Claim 4
Dependent Claim
12 words
The method of claim 1 wherein said netting material is a polyolefin.
Claim 5
Dependent Claim
19 words
The method of claim 1 wherein said netting material is selected from the group consisting of polyethylene and polypropylene.
Claim 6
Dependent Claim
20 words
The method of claim 1 wherein there are at least three (3) interstices across the width of the net strip.
References Cited (Backward Citations)
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Cited
US3764527A
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US3960722A
Cited
JPS4933741A
Cited
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Cited
US4107051A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-07-19 | 1986-01-18 | 1986-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-19 | 1990-01-18 | 1990-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-19 | 1994-01-18 | 1994-07-20 | $7700.00 | Window Closed / Lapsed |