Patent US4737394A successfully refreshed from Google Patents.
US4737394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Article for absorbing oils
Assignee: Xymid LLC
•
Filing: 1987-06-17
•
Granted: 1988-04-12
•
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 20:05
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)
US3468748A
Cited
US3649428A
Cited
US3649427A
Cited
US3769815A
Cited
US4071647A
Cited
US4107051A
Cited
US4395336A
Cited
US4437865A
Cited
US4497712A
Cited
US4657802A
Cited
US4606964A
Cited
US4675226A
Cited
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 |