US4055693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leatherlike fabrics
Assignee: BASF Corp
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Filing: 1976-08-04
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Granted: 1977-10-25
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Expires: 1996-08-04
Abstract
Abstract A napped fabric is treated to bond the nap fibers together while leaving the nap structure largely open and porous. The surface of the bonded nap is then subjected to a series of spaced short cuts to form spaced clumps of bonded fibers which clumps have free ends projecting from the bonded nap so that they can be brushed from stable upright positions to bent-over positions, giving an attractive rough appearance resembling a split suede leather.
Inventors
- 👤 Frank Peter Civardi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:38
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; B32B5/00; B32B5/22; B32B5/24; B32B27/40; D; D06; D06C; D06C23/00; D06N; D06N3/00; D06N3/007; D06N3/0075; B32B38/00; B32B38/0012; B32B2038/0016; B32B2305/00; B32B2305/02; B32B2305/026; B32B2307/00; B32B2307/40; B32B2307/402; Y; Y10; Y10S; Y10S428/00; Y10S428/904; Y10T; Y10T428/00; Y10T428/23907; Y10T428/2395; Y10T428/23979; Y10T428/23986; Y10T428/249921; Y10T428/249953; Y10T428/249978; Y10T428/249979; Y10T428/31504; Y10T428/31551; Y10T428/31554
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
133 words
A leather substitute comprising a fabric of interlaced multifiber yarns having extending from one face thereof a nap of fibers teased from said yarns, said nap having fibers thereof bonded together by bonding agent, said nap, with bonding agent, having a thickness of about 0.3 mm to about 1 mm and comprising spaced flexible clumps of nap fibers bonded together by said bonding agent, said clumps containing more than five nap fibers per clump, the void volume in said nap, with bonding agent, being at least about 70%, said spaced clumps being movable to project more or less from the surrounding nap, said clumps giving said nap a rough appearance like split suede leather, said fabric having on the upper face thereof opposite said nap a cellular elastomeric polymer layer having a continuous
Claim 2
Dependent Claim
133 words
A leather substitute comprising a fabric of interlaced multifiber yarns having extending from one face thereof a nap of fibers teased from said yarns, said nap having fibers thereof bonded together by bonding agent, said nap, with bonding agent, having a thickness of about 0.3 mm to about 1 mm and comprising spaced flexible clumps of nap fibers bonded together by said bonding agent, said clumps containing more than five nap fibers per clump, the void volume in said nap, with bonding agent, being at least about 70%, said spaced clumps being movable to project more or less from the surrounding nap, said clumps giving said nap a rough appearance like split suede leather, said fabric having on the upper face thereof opposite said nap a cellular elastomeric polymer layer having a continuous
Claim 3
Dependent Claim
13 words
Product as in claim 1 in which said cellular layer is of blown
Claim 4
Dependent Claim
13 words
Product as in claim 1 in which said cellular layer is of polyurethane.
Claim 5
Dependent Claim
12 words
Product as in claim 1 in which said bonding agent is elastomeric
Claim 6
Dependent Claim
32 words
Product as in claim 2 in which said cellular layer is about 1/2 to 2 mm thick and the total thickness of said product is more than 1 mm and up to
Claim 7
Dependent Claim
22 words
Product as in claim 7 in which said fabric, including said nap, is buff colored and said bonding agent is buff colored.
References Cited (Backward Citations)
US1708043A
Cited
US3176643A
Cited
US3347736A
Cited
US3399102A
Cited
US3282721A
Cited
US3387989A
Cited
US3705226A
Cited
US3616137A
Cited
US3674618A
Cited
US3778330A
Cited
US3988488A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-24 | 1981-04-25 | 1981-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-24 | 1985-04-25 | 1985-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-24 | 1989-04-25 | 1989-10-25 | $7700.00 | Window Closed / Lapsed |