Patent US5186831A successfully refreshed from Google Patents.
US5186831A
Expired / Lapsed
US
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Oil sorbent products and method of making same
Assignee: Leucadia Inc
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Filing: 1992-01-21
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Granted: 1993-02-16
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Expires: 2012-01-21
Abstract
Abstract A product for sorbing oil is disclosed. The product comprises an absorbent fiber core encapsulated in an adsorbent sheet, the adsorbent sheet being oleophilic, substantially hydrophobic, and capable of passing oil therethrough to the absorbent core. An apparatus and a method for forming the sorbent product are also disclosed.
Inventors
- 👤 Robert DePetris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:16
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/0202; B01D17/0208; B01D17/0214; B32; B32B; B32B27/00; B32B27/12; B32B27/32; B32B3/00; B32B3/02; B32B3/04; B32B5/00; B32B5/02; B32B5/028; B32B5/08; C; C02; C02F; C02F1/00; C02F1/68; C02F1/681; E; E02; E02B; E02B15/00; E02B15/04; E02B15/10; B32B2262/00; B32B2262/02; B32B2262/0261; B32B2262/0292; B32B2262/06; B32B2262/062; B32B2262/067; B32B2262/14; B32B2307/00; B32B2307/70; B32B2307/726; B32B2307/73; Y; Y02; Y02A; Y02A20/00; Y02A20/20; Y02A20/204; Y10; Y10S; Y10S210/00; Y10S210/918; Y10S210/922; Y10S210/924
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
83 words
A composite fiber blanket and polymer sheet of a size sufficient to enable a great range of oil sorbent products and product sizes, said composite made from a process comprising the steps of: (a) providing a fiber blanket comprising oil absorbent fibers; and (b) encapsulating said fiber blanket in a polymer sheet of adsorbent material, said sheet of adsorbent material being oleophilic and substantially hydrophobic, said sheet being capable of passing oil therethrough and being substantially impervious to the passage of water therethrough.
Claim 2
Dependent Claim
83 words
A composite fiber blanket and polymer sheet of a size sufficient to enable a great range of oil sorbent products and product sizes, said composite made from a process comprising the steps of: (a) providing a fiber blanket comprising oil absorbent fibers; and (b) encapsulating said fiber blanket in a polymer sheet of adsorbent material, said sheet of adsorbent material being oleophilic and substantially hydrophobic, said sheet being capable of passing oil therethrough and being substantially impervious to the passage of water therethrough.
Claim 3
Dependent Claim
18 words
The composite of claim 1 wherein at least about 25% of the blanket fibers are oil absorbent fibers.
Claim 4
Dependent Claim
18 words
The composite of claim 1 wherein at least about 50% of the blanket fibers are oil absorbent fibers.
Claim 5
Dependent Claim
18 words
The composite of claim 1 wherein at least about 95% of the blanket fibers are oil absorbent fibers.
Claim 6
Dependent Claim
16 words
The composite of claim 1 wherein about 100% of the blanket fibers are oil absorbent fibers.
Claim 7
Dependent Claim
16 words
The composite of claim 1 wherein the oil absorbent fibers comprise at least 50% natural fibers.
Claim 8
Dependent Claim
26 words
The composite of claim 6 wherein the natural fibers are selected from the group consisting of wood fibers, bleachboard fibers, paper fibers and textile waste fibers.
Claim 9
Dependent Claim
15 words
The composite of claim 1 wherein the oil absorbent fibers comprise substantially 100% natural fibers.
Claim 10
Dependent Claim
26 words
The composite of claim 1 wherein the natural fibers are selected from the group consisting of wood fibers, bleachboard fibers, paper fibers and textile waste fibers.
Claim 11
Dependent Claim
16 words
The composite of claim 1 wherein the sheet of adsorbent material comprises a lower alkyl polymer.
Claim 12
Dependent Claim
20 words
The composite of claim 10 wherein the lower alkyl polymer is selected from the group consisting of polyethylene and polypropylene.
Claim 13
Dependent Claim
19 words
The composite of claim 1 wherein the oil sorbent product is in the form of an oil sorbent pillow.
Claim 14
Dependent Claim
15 words
The composite of claim 12 wherein the oil pillow is enclosed with a mesh casing.
Claim 15
Dependent Claim
19 words
The composite of claim 1 wherein the oil sorbent product is in the form of an oil barrier boom.
Claim 16
Dependent Claim
16 words
The composite of claim 14 wherein the oil barrier boom is enclosed with a mesh casing.
Claim 17
Dependent Claim
24 words
The composite of claim 15 wherein the mesh casing is nylon and has a mesh size of from about 1/2×1/2inch to about 1×1 inch.
Claim 18
Dependent Claim
18 words
The composite of claim 1 wherein a mesh casing is integral with said polymer sheet of adsorbent material.
Claim 19
Dependent Claim
51 words
The composite of claim 1 wherein said fiber blanket comprises at least 50% absorbent natural cellulose fibers, said fibers being capable of absorbing both oil and water, and said polymer sheet of adsorbent material being applied to said fiber blanket in the form of a melt blown sheet prior to encapsulating.
Claim 20
Dependent Claim
16 words
The composite of claim 18 wherein the said blanket fibers are substantially 100% natural cellulose fibers.
Claim 21
Dependent Claim
85 words
The composite of claim 1 wherein the width of said polymer sheet is greater than the width of the said blanket and the blanket is centered on the polymer sheet, and said blanket is encapsulated in said sheet by folding the polymer sheet over the edge of the blanket to which it is adjacent, and rolling the composite of the blanket and polymer sheet with folded over flaps upon itself lengthwise to form a tubular structure, the tubular structure being positioned within a mesh casing.
Claim 22
Independent Claim
94 words
A method of separating oil from the surface of a body of water, said method comprising contacting said oil with an oil sorbent product, said oil sorbent product comprising a composite fiber blanket and polymer sheet made from a process comprising the steps of: (a) providing a fiber blanket comprising oil absorbent fibers; and (b) encapsulating said fiber blanket in a polymer sheet of adsorbent material, said sheet of adsorbent material being oleophilic and substantially hydrophobic, said sheet being capable of passing oil therethrough and being substantially impervious to the passage of water therethrough.
Claim 23
Independent Claim
94 words
A method of separating oil from the surface of a body of water, said method comprising contacting said oil with an oil sorbent product, said oil sorbent product comprising a composite fiber blanket and polymer sheet made from a process comprising the steps of: (a) providing a fiber blanket comprising oil absorbent fibers; and (b) encapsulating said fiber blanket in a polymer sheet of adsorbent material, said sheet of adsorbent material being oleophilic and substantially hydrophobic, said sheet being capable of passing oil therethrough and being substantially impervious to the passage of water therethrough.
References Cited (Backward Citations)
USRE21087E
Cited
US3764527A
Cited
US4380570A
Cited
US4366067A
Cited
US4737394A
Cited
US4792399A
Cited
US4851273A
Cited
US4879170A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-02-16 | 1996-08-17 | 1997-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-02-16 | 2000-08-17 | 2001-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-02-16 | 2004-08-17 | 2005-02-16 | $7700.00 | Window Closed / Lapsed |