US4737394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Article for absorbing oils
Assignee: Xymid LLC
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Filing: 1987-06-17
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Granted: 1988-04-12
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Expires: 2007-06-17
Abstract
Abstract An oil-absorbing article comprises a porous outer fabric which encloses fibrous oil-absorbing particles. The porous fabric of the invention is a nonwoven fibrous polyolefin layer of polyethylene or polypropylene that is stitch-bonded with an elastic thread.
Inventors
- 👤 Dimitri P. Zafiroglu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:36
CPC Classifications
E; E02; E02B; E02B15/00; E02B15/04; E02B15/10; E02B15/101; D; D04; D04H; D04H1/00; D04H1/40; D04H1/44; D04H1/52; Y; Y02; Y02A; Y02A20/00; Y02A20/20; Y02A20/204; Y10; Y10S; Y10S210/00; Y10S210/918; Y10S210/922; Y10S210/924; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/24; Y10T428/24033; Y10T428/24058; Y10T428/25; Y10T428/254; Y10T428/27; Y10T442/00; Y10T442/60; Y10T442/682; Y10T442/699
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
114 words
An improved oil-absorbing article having a porous outer fabric which encloses fibrous absorbent particles, the improvement comprising the outer fabric being a nonwoven fibrous polyolefin layer of polyethylene or polypropylene that is stitch-bonded with an elastic thread that forms spaced apart rows of stitches extending along the length of the fabric, the row spacing being in the range of 2 to 10 rows per centimeter and the stitch spacing being in the range of 2 to 15 per centimeter, the stitching thread amounting to 2 to 40% of the total weight of the outer fabric and the outer fabric having a unit weight in the range of 30 to 250 grams per square meter.
Claim 2
Dependent Claim
114 words
An improved oil-absorbing article having a porous outer fabric which encloses fibrous absorbent particles, the improvement comprising the outer fabric being a nonwoven fibrous polyolefin layer of polyethylene or polypropylene that is stitch-bonded with an elastic thread that forms spaced apart rows of stitches extending along the length of the fabric, the row spacing being in the range of 2 to 10 rows per centimeter and the stitch spacing being in the range of 2 to 15 per centimeter, the stitching thread amounting to 2 to 40% of the total weight of the outer fabric and the outer fabric having a unit weight in the range of 30 to 250 grams per square meter.
Claim 3
Dependent Claim
69 words
An oil-absorbing article in accordance with claim 1 wherein the row spacing is in the range of 3 to 6 rows/cm, the stitch spacing is in the range of 3 to 10 stitches per inch, the stitching thread amounts to 5 to 10% of the total weight of the outer fabric, and the outer fabric has a unit weight in the range of 75 to 175 g/m 2 .
Claim 4
Dependent Claim
43 words
An oil-absorbing article in accordance with claim 1 or 2 wherein the thickness of the outer fabric is in the range of 0.6 to 1.2 mm and the density of the fabric is in the range of 0.1 to 0.2 g/cm 3 .
Claim 5
Dependent Claim
25 words
An oil-absorbing article in accordance with claim 1, 2 or 3 wherein the nonwoven fibrous polyolefin layer is formed of nonbonded, plexifilamentary, polyethylene film-fibril strands.
Claim 6
Dependent Claim
28 words
An oil-absorbing article in accordance with claim 1, 2 or 3 wherein the nonwoven fibrous polyolefin layer is formed of polypropylene fibers of no more than 3.5 dtex.
Claim 7
Dependent Claim
20 words
An oil-absorbing article in accordance with claim 1, 2 or 3 wherein the stitching yarn is a spandex elastomeric yarn.
Claim 8
Dependent Claim
35 words
An oil absorbing article in accordance with claims 1, 2 or 3 wherein the extensibility of the outer fabric is at least 75% in the longitudinal direction and at least 25% in the transverse direction.
Claim 9
Dependent Claim
21 words
An oil-absorbing article in accordance with claim 1, 2 or 3 wherein the fibrous absorbent particles include flash-spun linear polyethylene particles.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-04-12 | 1991-10-12 | 1992-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-12 | 1995-10-12 | 1996-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-12 | 1999-10-12 | 2000-04-12 | $7700.00 | Window Closed / Lapsed |